/* Import Font Awesome and Google Fonts */
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css');
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&family=Orbitron:wght@400;500;700&display=swap');

/* CSS Variables - Compatible with LMS themes */
:root {
  /* Map theme variables for compatibility */
  --text-primary: var(--text-primary, #1f2937);
  --text-secondary: var(--text-secondary, #4b5563);
  --text-muted: var(--text-muted, #9ca3af);
  --text-inverse: var(--text-inverse, #ffffff);
  
  --bg-primary: var(--background-color, #f0fdf4);
  --bg-secondary: var(--surface-color, #ffffff);
  --bg-tertiary: var(--hover-color, #dcfce7);
  --bg-card: var(--card-color, rgba(255, 255, 255, 0.95));
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  
  /* Base Theme Variables - Green LMS Theme */
  --primary-color: #10b981;
  --secondary-color: var(--secondary-color, #059669);
  --accent-color: #34d399;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  --info-color: #3b82f6;
  
  /* Border Colors - Use theme borders */
  --border-light: var(--border-color, #e5e7eb);
  --border-medium: var(--border-hover, #d1d5db);
  --border-dark: var(--text-muted, #9ca3af);
  --border-accent: var(--border-focus, rgba(16, 185, 129, 0.2));
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-green: 0 4px 14px 0 rgba(16, 185, 129, 0.3);
  --shadow-green-lg: 0 8px 24px 0 rgba(16, 185, 129, 0.4);
  
  /* Typography */
  --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-display: 'Inter', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-index layers */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --gradient-accent: linear-gradient(135deg, #34d399 0%, #10b981 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.7) 100%);
  --gradient-shine: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.3) 50%, transparent 100%);
}

/* Ensure high contrast for readability */
.homework-container,
.exam-container,
.question-container {
  color: var(--text-primary) !important;
  background-color: var(--bg-primary) !important;
}

.card,
.modal-content,
.question-card {
  color: var(--text-primary) !important;
  background-color: var(--bg-secondary) !important;
}

/* Dark Mode Variables - Ensure proper theme inheritance */
[data-theme="dark"], .dark-mode {
  --bg-primary: var(--background-color, #121212);
  --bg-secondary: var(--surface-color, #1e1e1e);
  --bg-tertiary: var(--hover-color, #2d2d2d);
  --text-primary: var(--text-primary, #ffffff);
  --text-secondary: var(--text-secondary, #e0e0e0);
  --text-muted: var(--text-muted, #94a3b8);
  --bg-card: rgba(30, 30, 30, 0.92);
  --text-primary: #f8fafc;
  --text-secondary: #d1d5db;
  --text-muted: #94a3b8;
  --border-light: rgba(148, 163, 184, 0.35);
  --border-medium: rgba(148, 163, 184, 0.45);
  --border-dark: rgba(148, 163, 184, 0.6);
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 12px 30px rgba(0, 0, 0, 0.55);
  --shadow-xl: 0 20px 45px rgba(0, 0, 0, 0.65);
  --bg-pattern: none;
}

[data-theme="scifi"] {
  --primary-color: #00d9ff;
  --secondary-color: #0099cc;
  --accent-color: #00ffff;
  --bg-pattern:
    radial-gradient(circle at 20% 20%, rgba(0, 217, 255, 0.08), transparent 60%),
    radial-gradient(circle at 80% 0%, rgba(0, 153, 204, 0.08), transparent 55%);
}

[data-theme="heaven"] {
  --primary-color: #8ecae6;
  --secondary-color: #bde0fe;
  --accent-color: #ffe4b5;
  --bg-pattern: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="%23ffd700" opacity="0.02"/></svg>');
}

[data-theme="space"] {
  --primary-color: #9d4edd;
  --secondary-color: #7209b7;
  --accent-color: #c77dff;
  --bg-pattern:
    radial-gradient(circle at 20% 20%, rgba(157, 78, 221, 0.08), transparent 55%),
    radial-gradient(circle at 80% 10%, rgba(114, 9, 183, 0.1), transparent 60%);
}

[data-theme="nature"] {
  --primary-color: #40916c;
  --secondary-color: #2d6a4f;
  --accent-color: #95d5b2;
  --bg-pattern: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="%2340916c" opacity="0.02"/></svg>');
}

/* Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family-base);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
  scroll-behavior: smooth;
  background-image: var(--bg-pattern, none);
  background-attachment: fixed;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

button {
  cursor: pointer;
  background: var(--gradient-primary);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  font-weight: 600;
  box-shadow: var(--shadow-green);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

button::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

button:hover::before {
  width: 300px;
  height: 300px;
}

button:hover {
  background: linear-gradient(135deg, #059669 0%, #047857 100%);
  box-shadow: var(--shadow-green-lg);
  transform: translateY(-2px);
}

button:active {
  transform: translateY(0);
  box-shadow: var(--shadow-green);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
  background: #9ca3af;
  transform: none;
}

button:disabled:hover {
  background: #9ca3af;
  transform: none;
}

button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.listenwrite-audio {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.listenwrite-audio audio,
.listenwrite-audio video,
.listenwrite-audio iframe {
  width: 100%;
  max-width: 520px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  background: var(--bg-secondary);
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #10b981 0%, #059669 50%, #047857 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  animation: fadeIn 0.3s ease-out;
}

.loading-screen::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at 20% 30%, rgba(52, 211, 153, 0.3), transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(5, 150, 105, 0.3), transparent 50%);
  animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

.loading-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: clamp(0.5rem, 1.8vw, 0.875rem);
  max-width: min(420px, 90vw);
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(0.35rem, 1.3vw, 0.65rem);
}

.loading-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.loading-text h2 {
  font-size: clamp(1rem, 3.2vw, 1.4rem);
  font-weight: 700;
  color: white;
  margin: clamp(0.35rem, 1.5vw, 0.65rem) 0 clamp(0.25rem, 0.8vw, 0.4rem);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  line-height: 1.3;
}

.loading-text p {
  font-size: clamp(0.75rem, 2.2vw, 0.95rem);
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
  line-height: 1.5;
}

.loading-spinner {
  margin: clamp(0.5rem, 1.8vw, 0.875rem) 0;
}

.spinner {
  width: clamp(28px, 6.5vw, 38px);
  height: clamp(28px, 6.5vw, 38px);
  border: clamp(2.5px, 0.7vw, 3.5px) solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Loading progress bar + percentage and logo */
.loading-progress {
  margin-top: clamp(0.35rem, 1vw, 0.5rem);
  width: 70%;
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.progress-bar {
  width: 100%;
  height: clamp(10px, 2.5vw, 14px);
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  overflow: hidden;
  backdrop-filter: blur(10px);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

#loadingProgress {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, white 0%, rgba(255, 255, 255, 0.9) 100%);
  border-radius: var(--radius-full);
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
  transition: width 300ms ease;
  position: relative;
}

#loadingProgress::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-shine);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

#loadingPercentage {
  display: block;
  margin-top: clamp(0.4rem, 1.2vw, 0.6rem);
  font-weight: 700;
  font-size: clamp(0.85rem, 2.5vw, 1.05rem);
  color: white;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

/* In-exam progress percentage text */
#progressPercentage {
  font-weight: 700;
  color: var(--text-primary);
}

.exam-logo, .loading-logo {
  display: block;
  width: clamp(80px, 20vw, 120px);
  height: auto;
  margin: 0 auto clamp(0.6rem, 2vw, 1rem);
  filter: drop-shadow(0 8px 20px rgba(0, 0, 0, 0.3));
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.exam-logo img, .loading-logo img {
  width: 100%;
  height: auto;
  display: block;
}

.loading-language-selector {
  margin: clamp(0.3rem, 0.8vw, 0.4rem) 0;
  padding: clamp(0.3rem, 0.8vw, 0.4rem);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  width: 70%;
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.language-selector-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(0.15rem, 0.4vw, 0.25rem);
  margin-bottom: clamp(0.25rem, 0.7vw, 0.35rem);
  font-size: clamp(0.65rem, 1.6vw, 0.75rem);
  font-weight: 700;
  color: white;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.language-selector-label i {
  font-size: clamp(0.75rem, 1.8vw, 0.85rem);
}

.language-chips {
  display: flex;
  gap: clamp(0.3rem, 0.8vw, 0.45rem);
  justify-content: center;
  flex-wrap: nowrap;
  align-items: center;
}

.language-chip {
  display: flex;
  align-items: center;
  gap: clamp(0.15rem, 0.4vw, 0.25rem);
  padding: clamp(0.25rem, 0.7vw, 0.35rem) clamp(0.35rem, 1vw, 0.5rem);
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-sm);
  color: white;
  font-size: clamp(0.6rem, 1.3vw, 0.7rem);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  position: relative;
  overflow: hidden;
  min-width: clamp(65px, 16vw, 85px);
}

.language-chip::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-shine);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.language-chip:hover::before {
  opacity: 1;
}

.language-chip:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.language-chip.active {
  background: white;
  color: var(--primary-color);
  border-color: white;
  transform: scale(1.08);
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.4);
}

.language-chip .flag {
  font-size: var(--font-size-2xl);
  position: relative;
  z-index: 1;
}

.language-chip span:last-child {
  position: relative;
  z-index: 1;
}

/* Loading Start Section */
.loading-start-section {
  margin-top: clamp(0.75rem, 2.2vw, 1.1rem);
  text-align: center;
  animation: fadeInUp 0.6s ease-out 0.3s backwards;
}

.start-exam-btn {
  padding: clamp(0.5rem, 1.6vw, 0.75rem) clamp(1rem, 3.2vw, 1.6rem);
  font-size: clamp(0.85rem, 2.2vw, 1rem);
  font-weight: 700;
  background: white;
  color: var(--primary-color);
  border: none;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), 0 0 0 0 rgba(255, 255, 255, 0.4);
  display: inline-flex;
  align-items: center;
  gap: clamp(0.4rem, 1.2vw, 0.6rem);
  position: relative;
  overflow: hidden;
  min-width: clamp(120px, 30vw, 160px);
}

.start-exam-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.start-exam-btn i,
.start-exam-btn span {
  position: relative;
  z-index: 1;
}

.start-exam-btn i {
  font-size: clamp(0.85rem, 2.2vw, 1rem);
}

.start-exam-btn:hover::before {
  opacity: 1;
}

.start-exam-btn:hover {
  color: white;
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4), 0 0 0 8px rgba(255, 255, 255, 0.2);
  animation: pulse-ring 1.5s ease-out infinite;
}

@keyframes pulse-ring {
  0% {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4), 0 0 0 0 rgba(255, 255, 255, 0.4);
  }
  50% {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4), 0 0 0 12px rgba(255, 255, 255, 0);
  }
  100% {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4), 0 0 0 0 rgba(255, 255, 255, 0);
  }
}

.start-exam-btn:active {
  transform: translateY(-2px) scale(0.98);
}

.btn-large {
  padding: clamp(0.5rem, 1.6vw, 0.75rem) clamp(1rem, 3.2vw, 1.6rem);
  font-size: clamp(0.85rem, 2.2vw, 1rem);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Accessibility: visible focus rings on interactive elements */
.arrange-item:focus,
.arrange-reset:focus,
.listenwrite-input:focus,
button:focus,
.start-exam-btn:focus {
  outline: 3px solid var(--accent-color);
  outline-offset: 2px;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* Exam Container */
.exam-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  position: relative;
  overflow-x: hidden;
}

/* Base animated background layer for exam container */
.exam-container::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.3;
  pointer-events: none;
}

.exam-container::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.6;
  pointer-events: none;
}

/* Ensure children are above background */
.exam-container > * {
  position: relative;
  z-index: 1;
}

/* SciFi Theme - Digital Grid + Flying UFOs/Particles */
[data-theme="scifi"] .exam-container {
  background: linear-gradient(180deg, #0a0e27 0%, #1a1f3a 50%, #0a0e27 100%);
}

[data-theme="scifi"] .exam-container::before {
  background: 
    linear-gradient(90deg, transparent 0px, rgba(0, 217, 255, 0.3) 1px, transparent 1px),
    linear-gradient(0deg, transparent 0px, rgba(0, 217, 255, 0.3) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridFlow 20s linear infinite;
}

/* Arrange question responsive layout */
.arrange-items {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 10px 0;
}
.arrange-item {
  padding: 10px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  cursor: grab;
  user-select: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}
.arrange-item:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }
.arrange-item.dragging { opacity: .85; cursor: grabbing; transform: scale(1.02); box-shadow: var(--shadow-lg); }
.arrange-reset { margin-top: 8px; padding: 8px 12px; border-radius: var(--radius-md); }

@media (max-width: 640px) {
  .arrange-items { gap: 8px; }
  .arrange-item { flex: 1 1 calc(50% - 8px); text-align: center; }
}

[data-theme="scifi"] .exam-container::after {
  background-image: 
    radial-gradient(circle 8px at 15% 20%, #00ffff, transparent 12px),
    radial-gradient(circle 10px at 45% 35%, #00d9ff, transparent 15px),
    radial-gradient(circle 7px at 75% 50%, #0099cc, transparent 10px),
    radial-gradient(circle 12px at 25% 65%, #00ffff, transparent 18px),
    radial-gradient(circle 6px at 85% 75%, #00d9ff, transparent 9px),
    radial-gradient(circle 9px at 55% 85%, #0099cc, transparent 14px);
  background-size: 100% 100%;
  background-position: 0% 0%;
  animation: ufoFloat 8s ease-in-out infinite;
  filter: drop-shadow(0 0 8px #00ffff);
}

/* Heaven Theme - Golden Clouds + Falling Stars */
[data-theme="heaven"] .exam-container {
  background: linear-gradient(180deg, #fff8e1 0%, #ffe4b5 30%, #ffd89b 60%, #fff8e1 100%);
}

[data-theme="heaven"] .exam-container::before {
  background: 
    radial-gradient(ellipse 800px 400px at 20% 30%, rgba(255, 215, 0, 0.25) 0%, transparent 60%),
    radial-gradient(ellipse 600px 500px at 80% 60%, rgba(255, 250, 205, 0.3) 0%, transparent 60%),
    radial-gradient(ellipse 700px 450px at 50% 80%, rgba(255, 235, 205, 0.2) 0%, transparent 60%);
  animation: cloudDrift 30s ease-in-out infinite alternate;
}

[data-theme="heaven"] .exam-container::after {
  background-image: 
    radial-gradient(circle 6px at 10% 15%, rgba(255, 215, 0, 1), transparent 12px),
    radial-gradient(circle 8px at 30% 25%, rgba(255, 223, 0, 0.9), transparent 16px),
    radial-gradient(circle 5px at 60% 40%, rgba(255, 215, 0, 1), transparent 10px),
    radial-gradient(circle 10px at 80% 55%, rgba(255, 200, 0, 0.8), transparent 20px),
    radial-gradient(circle 4px at 25% 70%, rgba(255, 215, 0, 0.9), transparent 8px),
    radial-gradient(circle 7px at 70% 85%, rgba(255, 223, 0, 1), transparent 14px);
  background-size: 100% 100%;
  animation: shootingStars 6s linear infinite;
  filter: drop-shadow(0 0 6px #ffd700);
}

/* Space Theme - Deep Space + Comets & Meteors */
[data-theme="space"] .exam-container {
  background: radial-gradient(ellipse at top, #1a0033 0%, #0d001a 50%, #000000 100%);
}

[data-theme="space"] .exam-container::before {
  background: 
    radial-gradient(ellipse 1000px 600px at 25% 20%, rgba(157, 78, 221, 0.3) 0%, transparent 50%),
    radial-gradient(ellipse 800px 700px at 75% 70%, rgba(114, 9, 183, 0.25) 0%, transparent 50%),
    radial-gradient(circle 500px at 50% 50%, rgba(199, 125, 255, 0.15) 0%, transparent 60%);
  animation: nebulaFloat 40s ease-in-out infinite alternate;
}

[data-theme="space"] .exam-container::after {
  background-image: 
    radial-gradient(circle 6px at 12% 18%, white, transparent 12px),
    radial-gradient(circle 4px at 25% 35%, white, transparent 8px),
    radial-gradient(circle 8px at 45% 22%, white, transparent 16px),
    radial-gradient(circle 3px at 68% 45%, white, transparent 6px),
    radial-gradient(circle 10px at 82% 28%, white, transparent 20px),
    radial-gradient(circle 5px at 35% 65%, white, transparent 10px),
    radial-gradient(circle 4px at 72% 78%, white, transparent 8px),
    radial-gradient(circle 7px at 88% 62%, white, transparent 14px),
    radial-gradient(circle 3px at 15% 82%, white, transparent 6px),
    radial-gradient(circle 9px at 55% 88%, white, transparent 18px);
  background-size: 100% 100%;
  animation: starfieldTwinkle 3s ease-in-out infinite, cometsFly 10s linear infinite;
  filter: drop-shadow(0 0 4px white);
}

/* Nature Theme - Forest Green + Swimming Fish */
[data-theme="nature"] .exam-container {
  background: linear-gradient(180deg, #d4f1d4 0%, #a8e6a8 30%, #7dd87d 60%, #a8e6a8 100%);
}

[data-theme="nature"] .exam-container::before {
  background: 
    radial-gradient(ellipse 900px 500px at 15% 25%, rgba(64, 145, 108, 0.2) 0%, transparent 55%),
    radial-gradient(ellipse 700px 600px at 85% 65%, rgba(116, 198, 157, 0.18) 0%, transparent 55%),
    radial-gradient(ellipse 800px 550px at 50% 85%, rgba(45, 106, 79, 0.15) 0%, transparent 55%);
  animation: organicFlow 35s ease-in-out infinite alternate;
}

[data-theme="nature"] .exam-container::after {
  background-image: 
    radial-gradient(ellipse 16px 8px at 18% 22%, rgba(64, 145, 108, 0.8), transparent 20px),
    radial-gradient(ellipse 20px 10px at 42% 38%, rgba(45, 106, 79, 0.9), transparent 25px),
    radial-gradient(ellipse 14px 7px at 68% 52%, rgba(64, 145, 108, 0.8), transparent 18px),
    radial-gradient(ellipse 18px 9px at 28% 68%, rgba(116, 198, 157, 0.7), transparent 22px),
    radial-gradient(ellipse 16px 8px at 82% 75%, rgba(45, 106, 79, 0.8), transparent 20px),
    radial-gradient(ellipse 22px 11px at 55% 85%, rgba(64, 145, 108, 0.9), transparent 28px);
  background-size: 100% 100%;
  animation: fishSwim 12s ease-in-out infinite;
  filter: drop-shadow(0 0 4px rgba(64, 145, 108, 0.5));
}

/* Exam Header */
.exam-header {
  background: var(--header-bg, linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%));
  border-bottom: 2px solid var(--border-light);
  padding: var(--spacing-sm) var(--spacing-md);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  transition: all var(--transition-normal);
  color: var(--header-text, #ffffff);
}

.exam-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  position: relative;
}

/* Header toggle button */
.header-toggle {
  display: none;
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 15px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  z-index: var(--z-above);
}

.header-toggle:hover {
  background: var(--primary-color);
  color: white;
}

.header-toggle i {
  font-size: var(--font-size-xs);
  transition: transform var(--transition-fast);
}

/* Compact header state */
.exam-header.compact {
  padding: var(--spacing-sm) var(--spacing-md);
  min-height: 50px;
}

.exam-header.compact .header-left .exam-info h1 {
  font-size: var(--font-size-lg);
  margin-bottom: 0;
}

.exam-header.compact .exam-subtitle {
  display: none;
}

.exam-header.compact .timer-container {
  gap: var(--spacing-sm);
}

.exam-header.compact .total-timer,
.exam-header.compact .question-timer {
  padding: var(--spacing-xs) var(--spacing-sm);
}

.exam-header.compact .timer-label {
  display: none;
}

.exam-header.compact .exam-actions .btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.exam-header.compact .header-toggle i {
  transform: rotate(180deg);
}

.header-left .exam-info {
  display: flex;
  flex-direction: column;
}

.exam-title {
  font-family: var(--font-family-display);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
}

.exam-subtitle {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.timer-container {
  display: flex;
  gap: var(--spacing-lg);
}

.total-timer,
.question-timer {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
}

.total-timer {
  background: linear-gradient(135deg, var(--info-color), var(--primary-color));
  color: white;
  border: none;
}

.question-timer {
  background: linear-gradient(135deg, var(--warning-color), #ff8c00);
  color: white;
  border: none;
}

.timer-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.timer-value {
  font-family: var(--font-family-display);
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.exam-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.settings-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  background: var(--bg-secondary);
  color: var(--text-primary);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.settings-trigger:hover {
  background: var(--primary-color);
  color: #fff;
  transform: translateY(-1px);
}

.action-button {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.action-button:hover {
  background: var(--primary-color);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.action-button--primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border: none;
  box-shadow: var(--shadow-sm);
}

.action-button--primary:hover {
  box-shadow: var(--shadow-md);
}

.action-button i {
  pointer-events: none;
}

.exam-user-chip {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  min-width: 180px;
}

.exam-user-avatar {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  color: #fff;
  font-weight: 700;
}

.exam-user-avatar svg {
  width: 42px;
  height: 42px;
  display: block;
}

.exam-user-meta {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.exam-user-label {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.exam-user-name {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
}

body.exam-theme-midnight .exam-user-chip,
body.exam-theme-aurora .exam-user-chip {
  background: var(--bg-secondary);
  border-color: var(--border-light);
}

body.exam-theme-midnight .action-button,
body.exam-theme-aurora .action-button {
  background: var(--bg-secondary);
  border-color: var(--border-light);
  color: var(--text-primary);
}

body.exam-theme-midnight .action-button--primary,
body.exam-theme-aurora .action-button--primary {
  border: none;
}

/* Exam Top Container (Header + Progress) */
.exam-top-container {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(15px);
  border-bottom: 2px solid var(--border-light);
  box-shadow: 0 4px 25px rgba(0, 0, 0, 0.08);
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.4s ease,
              margin-bottom 0.4s ease,
              padding 0.4s ease;
  overflow: hidden;
  width: 100%;
  left: 0;
  max-height: 500px; /* Large enough for expanded state */
  opacity: 1;
}

.exam-top-container.collapsed {
  max-height: 0 !important;
  opacity: 0;
  margin-bottom: 0;
  padding: 0;
  border-bottom: none;
  box-shadow: none;
  pointer-events: none; /* Prevent interaction when collapsed */
}

/* Question Container Spacing Management */
.question-container {
  transition: margin-top 0.3s ease;
  margin-top: 0;
}

/* No extra spacing needed when collapsed - container is hidden via max-height */
.exam-top-container.collapsed ~ .question-container {
  margin-top: 0;
}


/* Compact Progress Container */
.compact-progress-container {
  background: linear-gradient(135deg, 
    var(--primary-color, #0ea5e9) 0%, 
    var(--secondary-color, #06b6d4) 50%,
    var(--accent-color, #8b5cf6) 100%);
  padding: var(--spacing-xs) var(--spacing-md);
  position: relative;
  transition: all var(--transition-normal);
  border-bottom: 2px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 20px rgba(14, 165, 233, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.compact-progress-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, 
    rgba(255, 255, 255, 0.3) 0%,
    rgba(255, 255, 255, 0.8) 25%,
    #ffffff 50%,
    rgba(255, 255, 255, 0.8) 75%,
    rgba(255, 255, 255, 0.3) 100%);
  animation: progressTopLine 3s ease-in-out infinite;
}

.compact-progress-container:hover {
  background: linear-gradient(135deg, 
    var(--primary-hover, #0284c7) 0%, 
    var(--secondary-hover, #0891b2) 50%,
    var(--accent-hover, #7c3aed) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(14, 165, 233, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.compact-progress-container .progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xs);
}

.compact-progress-container .progress-text {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transition: all var(--transition-fast);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.compact-progress-container .progress-text i {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.9em;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.compact-progress-container .progress-percentage {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: #ffffff;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.1) 100%);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 2px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  animation: compactPercentagePulse 3s ease-in-out infinite;
  transition: all var(--transition-fast);
  min-width: 60px;
  text-align: center;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

/* Progress Track with Overlay Steps */
.progress-track {
  position: relative;
  width: 100%;
  height: 8px;
  background: linear-gradient(90deg, 
    var(--bg-tertiary) 0%, 
    rgba(var(--border-medium-rgb, 209, 217, 224), 0.6) 100%);
  border-radius: var(--radius-lg);
  overflow: visible;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.progress-track::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.7), transparent);
  border-radius: var(--radius-xl);
}

.progress-fill {
  position: relative;
  top: 0;
  left: 0;
  height: 100%;
background:white;
  border-radius: var(--radius-xl);
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  box-shadow: 0 3px 12px rgba(0, 180, 216, 0.4);
}

/* If the DOM uses an id for the progress fill, ensure it has the same look */
#examProgress {
  position: relative;
  top: 0;
  left: 0;
  height: 100%;
  background: white;
  border-radius: var(--radius-xl);
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  box-shadow: 0 3px 12px rgba(0, 180, 216, 0.4);
}

.progress-fill::before {
  content: '';
  position: relative;
  top: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(90deg, 
    rgba(255, 255, 255, 0.4) 0%, 
    rgba(255, 255, 255, 0.2) 50%, 
    rgba(255, 255, 255, 0.4) 100%);
  border-radius: var(--radius-xl);
}

.progress-fill::after {
  content: '';
  position: relaitve;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.7) 50%, 
    transparent 100%);
  animation: compactProgressShimmer 4s ease-in-out infinite;
  border-radius: var(--radius-xl);
}

/* Progress Steps Overlay */
.progress-steps-overlay {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  padding: 0 var(--spacing-xs);
  pointer-events: none;
}

.progress-step-marker {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--border-medium);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8px;
  font-weight: 700;
  color: var(--text-secondary);
}

.progress-step-marker::before {
  content: attr(data-step);
  position: absolute;
}

.progress-step-marker.completed {
  background: var(--success-color);
  border-color: var(--success-color);
  color: white;
  transform: scale(1.1);
  box-shadow: 0 4px 15px rgba(40, 167, 69, 0.4);
}

.progress-step-marker.completed::before {
  content: '✓';
  font-size: 12px;
}

.progress-step-marker.current {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
  transform: scale(1.3);
  box-shadow: 0 4px 15px rgba(0, 180, 216, 0.6);
  animation: stepMarkerPulse 2s ease-in-out infinite;
}

.progress-step-marker.pending {
  opacity: 0.6;
  transform: scale(0.9);
}

/* Toggle Button - Outside Container */
.top-container-toggle {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 30px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border: 2px solid white;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0, 180, 216, 0.4);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1001;
}

.exam-top-container.collapsed + .top-container-toggle {
  background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
  animation: toggleButtonBounce 0.5s ease-out;
}

.top-container-toggle:hover {
  transform: translateX(-50%) translateY(-2px) scale(1.05);
  box-shadow: 0 6px 25px rgba(0, 180, 216, 0.5);
  background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
}

.top-container-toggle i {
  font-size: 16px;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.exam-top-container.collapsed + .top-container-toggle i {
  transform: rotate(180deg);
}

/* Enhanced Animations */
@keyframes compactProgressShimmer {
  0% {
    left: -100%;
    opacity: 0;
  }
  30% {
    opacity: 1;
  }
  100% {
    left: 100%;
    opacity: 0;
  }
}

@keyframes compactPercentagePulse {
  0%, 100% {
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 6px 30px rgba(255, 255, 255, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.5);
    transform: scale(1.05);
  }
}

@keyframes stepMarkerPulse {
  0%, 100% {
    box-shadow: 0 4px 15px rgba(0, 180, 216, 0.6);
    transform: scale(1.3);
  }
  50% {
    box-shadow: 0 6px 20px rgba(0, 180, 216, 0.8);
    transform: scale(1.4);
  }
}

@keyframes progressTopLine {
  0% {
    background-position: -200px 0;
  }
  100% {
    background-position: 200px 0;
  }
}

@keyframes toggleButtonBounce {
  0% {
    transform: translateY(-10px) scale(0.9);
  }
  50% {
    transform: translateY(2px) scale(1.05);
  }
  100% {
    transform: translateY(0) scale(1);
  }
}

@keyframes finishButtonPulse {
  0%, 100% {
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 6px 25px rgba(40, 167, 69, 0.5);
    transform: scale(1.02);
  }
}

@keyframes progressShimmer {
  0% {
    left: -100%;
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    left: 100%;
    opacity: 0;
  }
}

@keyframes percentagePulse {
  0%, 100% {
    box-shadow: 0 4px 15px rgba(0, 180, 216, 0.3);
  }
  50% {
    box-shadow: 0 6px 20px rgba(0, 180, 216, 0.5);
  }
}

@keyframes stepComplete {
  0% {
    transform: scaleY(1) scaleX(1);
    box-shadow: 0 0 0 rgba(40, 167, 69, 0);
  }
  50% {
    transform: scaleY(1.4) scaleX(1.1);
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.6);
  }
  100% {
    transform: scaleY(1.2) scaleX(1.02);
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.4);
  }
}

@keyframes stepCurrent {
  0%, 100% {
    box-shadow: 0 4px 15px rgba(0, 180, 216, 0.6);
    transform: scaleY(1.5) scaleX(1.05);
  }
  50% {
    box-shadow: 0 6px 25px rgba(0, 180, 216, 0.8);
    transform: scaleY(1.6) scaleX(1.08);
  }
}

/* ===== Animated Background Keyframes ===== */

/* SciFi Theme Animations */
@keyframes scifiFlow {
  0% {
    background-position: 0% 0%, 0% 0%, 0 0;
  }
  100% {
    background-position: 200% 200%, -200% -200%, 40px 40px;
  }
}

@keyframes scifiPulse {
  0%, 100% {
    opacity: 0.3;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes particlesFloat {
  0% {
    background-position: 0% 0%;
    opacity: 0.3;
  }
  50% {
    opacity: 0.5;
  }
  100% {
    background-position: 100% 100%;
    opacity: 0.3;
  }
}

/* Heaven Theme Animations */
@keyframes heavenDrift {
  0%, 100% {
    background-position: 0% 50%, 100% 50%, 50% 0%;
  }
  25% {
    background-position: 25% 25%, 75% 75%, 75% 25%;
  }
  50% {
    background-position: 50% 0%, 50% 100%, 100% 50%;
  }
  75% {
    background-position: 75% 75%, 25% 25%, 25% 75%;
  }
}

@keyframes sparkleGlow {
  0%, 100% {
    opacity: 0.2;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.2);
  }
}

/* Space Theme Animations */
@keyframes spaceNebula {
  0%, 100% {
    background-position: 0% 0%, 100% 100%, 50% 50%;
  }
  33% {
    background-position: 50% 25%, 25% 50%, 75% 25%;
  }
  66% {
    background-position: 100% 50%, 50% 0%, 25% 75%;
  }
}

@keyframes starsTwinkle {
  0%, 100% {
    opacity: 0.2;
  }
  25% {
    opacity: 0.5;
  }
  50% {
    opacity: 0.3;
  }
  75% {
    opacity: 0.6;
  }
}

/* Nature Theme Animations */
@keyframes natureFlow {
  0%, 100% {
    background-position: 0% 50%, 100% 50%, 0% 0%;
  }
  50% {
    background-position: 100% 50%, 0% 50%, 100% 100%;
  }
}

@keyframes leafFloat {
  0% {
    background-position: 0% 0%;
    opacity: 0.25;
  }
  25% {
    opacity: 0.35;
  }
  50% {
    background-position: 50% 50%;
    opacity: 0.3;
  }
  75% {
    opacity: 0.4;
  }
  100% {
    background-position: 100% 100%;
    opacity: 0.25;
  }
}

/* Question Card Theme Animations */
@keyframes scanLine {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

@keyframes heavenGlow {
  0%, 100% {
    transform: rotate(0deg) scale(1);
    opacity: 0.3;
  }
  50% {
    transform: rotate(180deg) scale(1.1);
    opacity: 0.5;
  }
}

@keyframes cosmicPulse {
  0%, 100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.05);
  }
}

@keyframes organicFlow {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .exam-top-container {
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.06);
    max-height: 400px; /* Smaller max-height for tablet */
  }
  
  .exam-top-container.collapsed {
    max-height: 0 !important;
  }
  
  .compact-progress-container {
    padding: var(--spacing-xs) var(--spacing-md);
  }
  
  .compact-progress-container .progress-text {
    font-size: var(--font-size-sm);
    padding: var(--spacing-xxs) var(--spacing-xs);
  }
  
  .compact-progress-container .progress-percentage {
    font-size: var(--font-size-base);
    padding: var(--spacing-xxs) var(--spacing-xs);
    min-width: 45px;
  }
  
  .progress-track {
    height: 6px;
  }
  
  .progress-step-marker {
    width: 12px;
    height: 12px;
    font-size: 7px;
  }
  
  .top-container-toggle {
    width: 45px;
    height: 28px;
    top: 0;
    z-index: 1002;
  }
  
  .top-container-toggle i {
    font-size: 14px;
  }
  
  .top-container-toggle:hover {
    transform: translateX(-50%) translateY(-1px) scale(1.02);
  }
  
  .nav-btn {
    width: 45px;
    height: 45px;
  }
  
  /* No extra spacing needed when collapsed */
  .exam-top-container.collapsed ~ .question-container {
    margin-top: 0;
  }
}

@media (max-width: 480px) {
  .exam-top-container {
    max-height: 350px; /* Smaller for mobile */
  }
  
  .exam-top-container.collapsed {
    max-height: 0 !important;
  }
  
  .compact-progress-container {
    padding: var(--spacing-xxs) var(--spacing-sm);
  }
  
  .compact-progress-container .progress-info {
    flex-direction: row;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xxs);
    align-items: center;
  }
  
  .progress-track {
    height: 5px;
    margin-top: var(--spacing-xxs);
  }
  
  .progress-step-marker {
    width: 10px;
    height: 10px;
    font-size: 6px;
  }
  
  .progress-steps-overlay {
    padding: 0 var(--spacing-xxs);
  }
  
  .top-container-toggle {
    width: 40px;
    height: 25px;
    z-index: 1003;
  }
  
  .top-container-toggle i {
    font-size: 12px;
  }
  
  .nav-btn {
    width: 40px;
    height: 40px;
  }
  
  .nav-btn i {
    font-size: var(--font-size-base);
  }
  
  .nav-text {
    font-size: 10px;
  }
  
  /* No extra spacing needed when collapsed */
  .exam-top-container.collapsed ~ .question-container {
    margin-top: 0;
  }
}

/* Question Container with Animated Backgrounds */
.question-container {
  flex: 1;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  gap: var(--spacing-md);
  overflow: hidden;
}

/* Base animated background layer */
.question-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.4;
  pointer-events: none;
}

/* SciFi Theme - Circuit Board Animation */
[data-theme="scifi"] .question-container::before {
  background: 
    linear-gradient(90deg, transparent 0%, rgba(0, 180, 216, 0.1) 50%, transparent 100%),
    linear-gradient(0deg, transparent 0%, rgba(0, 119, 182, 0.05) 50%, transparent 100%),
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 10px,
      rgba(0, 180, 216, 0.03) 10px,
      rgba(0, 180, 216, 0.03) 20px
    );
  background-size: 200% 200%, 200% 200%, 40px 40px;
  animation: scifiFlow 20s linear infinite, scifiPulse 4s ease-in-out infinite;
}

/* Heaven Theme - Cloud Drift Animation */
[data-theme="heaven"] .question-container::before {
  background: 
    radial-gradient(circle at 20% 50%, rgba(142, 202, 230, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(205, 180, 219, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 50% 80%, rgba(142, 202, 230, 0.1) 0%, transparent 40%);
  background-size: 200% 200%;
  animation: heavenDrift 25s ease-in-out infinite;
}

/* Space Theme - Nebula Animation */
[data-theme="space"] .question-container::before {
  background: 
    radial-gradient(ellipse at 30% 40%, rgba(114, 9, 183, 0.2) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 60%, rgba(247, 37, 133, 0.15) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 20%, rgba(58, 12, 163, 0.18) 0%, transparent 50%);
  background-size: 300% 300%;
  animation: spaceNebula 30s ease-in-out infinite;
}

/* Nature Theme - Organic Flow Animation */
[data-theme="nature"] .question-container::before {
  background: 
    radial-gradient(circle at 25% 45%, rgba(82, 183, 136, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 75% 55%, rgba(149, 213, 178, 0.1) 0%, transparent 50%),
    linear-gradient(135deg, 
      transparent 0%, 
      rgba(45, 106, 79, 0.05) 25%, 
      transparent 50%,
      rgba(82, 183, 136, 0.08) 75%,
      transparent 100%
    );
  background-size: 250% 250%;
  animation: natureFlow 20s ease-in-out infinite;
}

/* Additional animated layer for particles/stars */
.question-container::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.3;
  pointer-events: none;
}

/* SciFi - Digital Particles */
[data-theme="scifi"] .question-container::after {
  background-image: 
    radial-gradient(2px 2px at 20% 30%, rgba(0, 180, 216, 0.6), transparent),
    radial-gradient(2px 2px at 60% 70%, rgba(144, 224, 239, 0.5), transparent),
    radial-gradient(1px 1px at 50% 50%, rgba(0, 119, 182, 0.4), transparent),
    radial-gradient(2px 2px at 80% 10%, rgba(0, 180, 216, 0.5), transparent),
    radial-gradient(1px 1px at 90% 60%, rgba(144, 224, 239, 0.6), transparent);
  background-size: 200% 200%;
  background-position: 0% 0%;
  animation: particlesFloat 15s linear infinite;
}

/* Space - Stars Twinkling */
[data-theme="space"] .question-container::after {
  background-image:
    radial-gradient(1px 1px at 10% 20%, white, transparent),
    radial-gradient(1px 1px at 30% 80%, rgba(247, 37, 133, 0.8), transparent),
    radial-gradient(2px 2px at 70% 40%, rgba(114, 9, 183, 0.6), transparent),
    radial-gradient(1px 1px at 85% 70%, white, transparent),
    radial-gradient(1px 1px at 45% 15%, rgba(247, 37, 133, 0.7), transparent),
    radial-gradient(1px 1px at 95% 30%, white, transparent);
  background-size: 200% 200%;
  animation: starsTwinkle 8s ease-in-out infinite;
}

/* Heaven - Light Sparkles */
[data-theme="heaven"] .question-container::after {
  background-image:
    radial-gradient(3px 3px at 15% 25%, rgba(205, 180, 219, 0.8), transparent),
    radial-gradient(2px 2px at 85% 15%, rgba(142, 202, 230, 0.6), transparent),
    radial-gradient(2px 2px at 50% 85%, rgba(205, 180, 219, 0.5), transparent),
    radial-gradient(3px 3px at 75% 65%, rgba(142, 202, 230, 0.7), transparent);
  background-size: 150% 150%;
  animation: sparkleGlow 6s ease-in-out infinite;
}

/* Nature - Leaf Particles */
[data-theme="nature"] .question-container::after {
  background-image:
    radial-gradient(4px 2px at 20% 40%, rgba(82, 183, 136, 0.4), transparent),
    radial-gradient(3px 2px at 80% 20%, rgba(149, 213, 178, 0.5), transparent),
    radial-gradient(4px 2px at 40% 80%, rgba(45, 106, 79, 0.3), transparent),
    radial-gradient(3px 2px at 90% 70%, rgba(82, 183, 136, 0.4), transparent);
  background-size: 180% 180%;
  animation: leafFloat 12s ease-in-out infinite;
}

/* Ensure content is above animated backgrounds */
.question-container > * {
  position: relative;
  z-index: 1;
}

.question-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-lg) var(--spacing-xl);
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-light);
  animation: slideIn 0.5s ease-out;
  position: relative;
  overflow: hidden;
}

/* Theme-specific Question Card Enhancements */

/* SciFi - Tech Border Glow */
[data-theme="scifi"] .question-card {
  border: 1px solid rgba(0, 180, 216, 0.3);
  box-shadow: 
    0 0 20px rgba(0, 180, 216, 0.1),
    0 10px 40px rgba(0, 0, 0, 0.2),
    inset 0 0 60px rgba(0, 180, 216, 0.02);
}

[data-theme="scifi"] .question-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(0, 180, 216, 0.1),
    transparent
  );
  animation: scanLine 3s linear infinite;
  pointer-events: none;
}

/* Heaven - Soft Glow */
[data-theme="heaven"] .question-card {
  border: 1px solid rgba(142, 202, 230, 0.2);
  box-shadow: 
    0 0 30px rgba(205, 180, 219, 0.15),
    0 10px 40px rgba(0, 0, 0, 0.1),
    inset 0 0 80px rgba(142, 202, 230, 0.03);
}

[data-theme="heaven"] .question-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle,
    rgba(205, 180, 219, 0.08) 0%,
    transparent 70%
  );
  animation: heavenGlow 8s ease-in-out infinite;
  pointer-events: none;
}

/* Space - Cosmic Border */
[data-theme="space"] .question-card {
  border: 1px solid rgba(114, 9, 183, 0.4);
  box-shadow: 
    0 0 25px rgba(247, 37, 133, 0.2),
    0 0 50px rgba(114, 9, 183, 0.15),
    0 10px 40px rgba(0, 0, 0, 0.3),
    inset 0 0 60px rgba(114, 9, 183, 0.05);
}

[data-theme="space"] .question-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 20%, rgba(247, 37, 133, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(114, 9, 183, 0.1) 0%, transparent 40%);
  animation: cosmicPulse 6s ease-in-out infinite;
  pointer-events: none;
}

/* Nature - Organic Border */
[data-theme="nature"] .question-card {
  border: 1px solid rgba(82, 183, 136, 0.3);
  box-shadow: 
    0 0 20px rgba(82, 183, 136, 0.1),
    0 10px 40px rgba(0, 0, 0, 0.15),
    inset 0 0 60px rgba(149, 213, 178, 0.03);
}

[data-theme="nature"] .question-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    rgba(82, 183, 136, 0.05) 0%,
    transparent 50%,
    rgba(149, 213, 178, 0.05) 100%
  );
  background-size: 400% 400%;
  animation: organicFlow 10s ease-in-out infinite;
  pointer-events: none;
}

/* Navigation Buttons - Static Position */
.nav-btn {
  position: static;
  width: 50px;
  height: 50px;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xxs);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 15px rgba(0, 180, 216, 0.3);
  font-size: var(--font-size-sm);
  flex-shrink: 0;
}

.nav-btn:hover {
  transform: scale(1.05) translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 180, 216, 0.4);
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

.nav-btn:active {
  transform: scale(0.98) translateY(0);
}

.nav-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: scale(0.95);
  background: linear-gradient(135deg, var(--border-medium), var(--text-secondary));
}

.nav-btn:disabled:hover {
  transform: scale(0.95);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Navigation button styling removed - now using static positioning */

.nav-btn i {
  font-size: var(--font-size-lg);
}

.nav-text {
  font-size: var(--font-size-xs);
  font-weight: 500;
  white-space: nowrap;
}

/* Hover effects for navigation buttons */
.nav-btn-left:hover {
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

.nav-btn-right:hover {
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

/* Special styling for "Finish" button (when it has submit functionality) */
.nav-btn-right:has(.fa-flag-checkered) {
  background: linear-gradient(135deg, var(--success-color), var(--primary-color));
  box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
  animation: finishButtonPulse 2s ease-in-out infinite;
}

.nav-btn-right:has(.fa-flag-checkered):hover {
  background: linear-gradient(135deg, var(--primary-color), var(--success-color));
  box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
  transform: scale(1.08) translateY(-3px);
}

/* Fallback for browsers that don't support :has() - Override disabled state */
.nav-btn-right.finish-button,
.nav-btn-right.finish-button:disabled {
  background: linear-gradient(135deg, var(--success-color), var(--primary-color)) !important;
  box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3) !important;
  animation: finishButtonPulse 2s ease-in-out infinite;
  opacity: 1 !important;
  cursor: pointer !important;
  transform: scale(1) !important;
}

.nav-btn-right.finish-button:hover,
.nav-btn-right.finish-button:disabled:hover {
  background: linear-gradient(135deg, var(--primary-color), var(--success-color)) !important;
  box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4) !important;
  transform: scale(1.08) translateY(-3px) !important;
}

/* Question Header */
.question-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 2px solid var(--border-light);
}

.question-number {
  font-family: var(--font-family-display);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-color);
}

.type-badge {
  background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
  color: white;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.question-content {
  min-height: 300px;
}

.question-media {
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.question-media img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.question-media audio,
.question-media video {
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius-lg);
}
.question-media iframe {
  width: 100%;
  max-width: 560px;
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.question-text {
  font-size: var(--font-size-lg);
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xl);
  text-align: left;
}
.question-text h4 {
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.question-text p {
  margin-bottom: var(--spacing-md);
}

/* Question Options */
.question-options {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

/* Multiple Choice Options */
.option-item {
  background-color: var(--bg-secondary);
  border: 2px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  position: relative;
  overflow: hidden;
}

.option-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left var(--transition-normal);
}

.option-item:hover {
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.option-item:hover::before {
  left: 100%;
}

.option-item.selected {
  border-color: var(--primary-color);
  background: linear-gradient(135deg, rgba(0, 180, 216, 0.1), rgba(144, 224, 239, 0.1));
}

.option-letter {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-family-display);
  font-weight: 700;
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.option-item.selected .option-letter {
  animation: bounce 0.3s ease;
}

.option-text {
  flex: 1;
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--text-primary);
}

/* True/False Options */
.truefalse-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.truefalse-option {
  background-color: var(--bg-secondary);
  border: 2px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.truefalse-option.true {
  background: linear-gradient(135deg, rgba(40, 167, 69, 0.1), rgba(40, 167, 69, 0.05));
}

.truefalse-option.false {
  background: linear-gradient(135deg, rgba(220, 53, 69, 0.1), rgba(220, 53, 69, 0.05));
}

.truefalse-option:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.truefalse-option.selected.true {
  border-color: var(--success-color);
  background: linear-gradient(135deg, rgba(40, 167, 69, 0.2), rgba(40, 167, 69, 0.1));
}

.truefalse-option.selected.false {
  border-color: var(--danger-color);
  background: linear-gradient(135deg, rgba(220, 53, 69, 0.2), rgba(220, 53, 69, 0.1));
}

.truefalse-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
}

.truefalse-option.true .truefalse-icon {
  color: var(--success-color);
}

.truefalse-option.false .truefalse-icon {
  color: var(--danger-color);
}

.truefalse-label {
  font-family: var(--font-family-display);
  font-size: var(--font-size-xl);
  font-weight: 700;
}

/* Image Select Options */
.image-select-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.image-option {
  background-color: var(--bg-secondary);
  border: 2px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: var(--spacing-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  overflow: hidden;
}

.image-option:hover {
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.image-option.selected {
  border-color: var(--primary-color);
  background: linear-gradient(135deg, rgba(0, 180, 216, 0.1), rgba(144, 224, 239, 0.1));
}

.image-option img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
}

.image-option-label {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--text-primary);
}

/* Fill in Blank */
.fillblank-container {
  font-size: var(--font-size-lg);
  line-height: 1.8;
}

.blank-input {
  display: inline-block;
  min-width: 150px;
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-bottom: 2px solid var(--primary-color);
  background-color: transparent;
  font-size: var(--font-size-lg);
  font-weight: 500;
  color: var(--text-primary);
  text-align: center;
  transition: all var(--transition-normal);
  margin: 0 var(--spacing-xs);
}

.blank-input:focus {
  outline: none;
  border-bottom-color: var(--accent-color);
  background-color: rgba(0, 180, 216, 0.05);
  transform: scale(1.02);
}

/* Writing Question */
.writing-container {
  width: 100%;
}

.writing-textarea {
  width: 100%;
  min-height: 200px;
  padding: var(--spacing-lg);
  border: 2px solid var(--border-medium);
  border-radius: var(--radius-lg);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: 1.6;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  resize: vertical;
  transition: all var(--transition-normal);
}

.writing-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.1);
}

.writing-info {
  display: flex;
  justify-content: between;
  align-items: center;
  margin-top: var(--spacing-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.word-count {
  margin-left: auto;
}

/* Arrange Question */
.arrange-container {
  text-align: center;
}

.arrange-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
  margin-bottom: var(--spacing-xl);
  min-height: 100px;
  padding: var(--spacing-lg);
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  border: 2px dashed var(--border-medium);
}

.arrange-item {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  cursor: move;
  user-select: none;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.arrange-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.arrange-item.dragging {
  opacity: 0.5;
  transform: rotate(5deg);
}

.arrange-reset {
  margin-top: var(--spacing-md);
}
/* Per-question submit button spacing for arrange */
.arrange-submit {
  align-self: flex-start;
  margin-top: var(--spacing-sm);
}

/* Exam Footer */
.exam-footer {
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-light);
  padding: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(10px);
  min-height: 70px;
}

.footer-left,
.footer-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.exam-info-footer {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  opacity: 0.8;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transition: width 0.3s ease, height 0.3s ease;
  transform: translate(-50%, -50%);
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--text-secondary), #6c757d);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-1px);
}

.btn-success {
  background: linear-gradient(135deg, var(--success-color), #20c997);
  color: white;
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger-color), #e56565);
  color: white;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-medium);
  color: var(--text-secondary);
}

.btn-icon:hover {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  animation: fadeIn 0.3s ease;
}

.modal-content {
  background-color: var(--bg-card);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp 0.3s ease;
}

.modal-header {
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-family: var(--font-family-display);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-color);
  margin: 0;
}

.modal-body {
  padding: var(--spacing-xl);
}

.settings-content {
  max-width: 600px;
}

.settings-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.settings-section h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.settings-control {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.settings-control label,
.settings-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.settings-control input[type="range"] {
  width: 100%;
  accent-color: var(--primary-color);
}

.settings-control--inline {
  flex-direction: row;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.settings-control--inline .btn {
  flex: 1;
  min-width: 140px;
}

.settings-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.settings-chip {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.settings-chip:hover {
  background: var(--primary-color);
  color: #fff;
  transform: translateY(-1px);
}

.settings-chip.active {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-sm);
}

body.exam-theme-midnight .settings-chip,
body.exam-theme-aurora .settings-chip {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--text-primary);
}

body.exam-theme-midnight .settings-chip.active,
body.exam-theme-aurora .settings-chip.active {
  border-color: transparent;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
}

body.exam-theme-midnight .progress-step,
body.exam-theme-aurora .progress-step {
  background: rgba(255, 255, 255, 0.15);
}

body.exam-theme-midnight .progress-step.current,
body.exam-theme-aurora .progress-step.current {
  background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
}

.modal-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
  margin-top: var(--spacing-xl);
}

/* Guest Modal Enhancements */
.guest-modal-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.guest-name-row input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  background: var(--bg-secondary);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.guest-name-row input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.25);
}

.guest-avatar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: var(--spacing-md);
}

.guest-avatar-label {
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.avatar-pick {
  border: none;
  padding: 0;
  background: none;
  cursor: pointer;
  text-align: left;
  border-radius: var(--radius-xl);
  transition: transform var(--transition-fast);
}

.avatar-pick:focus-visible {
  outline: 3px solid var(--accent-color);
  outline-offset: 2px;
}

.avatar-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.25));
  border: 2px solid transparent;
  border-radius: var(--radius-xl);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  height: 100%;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.avatar-illustration {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-illustration svg {
  width: 80px;
  height: 80px;
}

.avatar-name {
  font-weight: 600;
  color: var(--text-primary);
}

.avatar-pick:hover .avatar-card {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.avatar-pick.selected .avatar-card {
  border-color: var(--primary-color);
  box-shadow: 0 12px 24px rgba(0, 180, 216, 0.25);
  transform: translateY(-2px);
}

/* Login Required Overlay */
.login-required {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: calc(var(--z-modal) + 5);
  padding: var(--spacing-xl);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.login-required.hidden {
  opacity: 0;
  pointer-events: none;
}

.login-required-card {
  background: linear-gradient(160deg, rgba(14, 165, 233, 0.95), rgba(99, 102, 241, 0.95));
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  width: min(480px, 100%);
  text-align: center;
  box-shadow: 0 24px 48px rgba(15, 23, 42, 0.4);
  color: #fff;
  animation: floatY 0.6s ease-out;
}

.login-required-icon {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  margin: 0 auto var(--spacing-lg);
  background: rgba(15, 23, 42, 0.25);
  font-size: 2.5rem;
}

.login-required-card h2 {
  font-family: var(--font-family-display);
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-sm);
}

.login-required-card p {
  font-size: var(--font-size-base);
  opacity: 0.9;
  margin-bottom: var(--spacing-xl);
}

.login-required-action {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 600;
  padding-inline: var(--spacing-xl);
}

/* Answer Feedback Overlay */
.answer-feedback {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: calc(var(--z-modal) + 6);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.answer-feedback.visible {
  opacity: 1;
  pointer-events: auto;
}

.answer-feedback-card {
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  width: min(420px, 90vw);
  text-align: center;
  position: relative;
  box-shadow: 0 24px 48px rgba(15, 23, 42, 0.25);
  animation: popIn 0.45s ease;
}

.answer-feedback.correct .answer-feedback-card {
  border: 3px solid var(--success-color);
}

.answer-feedback.incorrect .answer-feedback-card {
  border: 3px solid var(--danger-color);
}

.answer-feedback-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  margin: 0 auto var(--spacing-lg);
  font-size: 2rem;
  background: rgba(79, 70, 229, 0.15);
  color: var(--primary-color);
}

.answer-feedback.correct .answer-feedback-icon {
  background: rgba(34, 197, 94, 0.2);
  color: var(--success-color);
}

.answer-feedback.incorrect .answer-feedback-icon {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger-color);
}

.answer-feedback-card h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-xs);
}

.answer-feedback-card p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

.answer-feedback-correct {
  background: rgba(14, 165, 233, 0.12);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

.answer-feedback-correct .answer-correct-label {
  display: block;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.answer-correct-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: 6px;
}

.answer-correct-letter {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--primary-color);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  flex-shrink: 0;
}

.answer-correct-text {
  color: var(--text-primary);
  text-align: left;
}

.answer-feedback-dismiss {
  margin: 0 auto;
  display: inline-flex;
}

.answer-fireworks {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: visible;
}

.answer-firework {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-color);
  top: 10%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  animation: firework 1.2s ease-in-out infinite;
}

.answer-firework:nth-child(2) {
  left: 20%;
  animation-delay: 0.2s;
  background: var(--success-color);
}

.answer-firework:nth-child(3) {
  left: 80%;
  animation-delay: 0.4s;
  background: var(--danger-color);
}

@keyframes firework {
  0% {
    transform: translate(-50%, -50%) scale(0.2);
    opacity: 0;
  }
  40% {
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -200%) scale(1.4);
    opacity: 0;
  }
}

@keyframes popIn {
  0% {
    transform: scale(0.85);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes floatY {
  0% {
    transform: translateY(20px);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Answer Highlight States */
.option-item.correct {
  border-color: var(--success-color);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.12), rgba(34, 197, 94, 0.05));
}

.option-item.incorrect {
  border-color: var(--danger-color);
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.12), rgba(239, 68, 68, 0.05));
}

.question-options .option-item.correct .option-letter {
  background: var(--success-color);
}

.question-options .option-item.incorrect .option-letter {
  background: var(--danger-color);
}

.truefalse-option.correct {
  border-color: var(--success-color);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.12), rgba(34, 197, 94, 0.04));
}

.truefalse-option.incorrect {
  border-color: var(--danger-color);
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.12), rgba(239, 68, 68, 0.04));
}

/* Guest Email Overlay */
.guest-email-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  z-index: calc(var(--z-modal) + 7);
  background: rgba(15, 23, 42, 0.65);
  transition: opacity var(--transition-normal);
}

.guest-email-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.guest-email-card {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  max-width: 460px;
  width: 100%;
  box-shadow: 0 28px 56px rgba(15, 23, 42, 0.35);
  animation: popIn 0.4s ease;
}

.guest-email-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
}

.guest-email-icon {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  background: rgba(14, 165, 233, 0.18);
  display: grid;
  place-items: center;
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-lg);
}

.guest-email-card h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
}

.guest-email-card p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
}

.guest-email-input input {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-medium);
  background: var(--bg-secondary);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.guest-email-input input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
}

.guest-email-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
  flex-wrap: wrap;
}

/* Listen & Write */
.listenwrite-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  border: 2px dashed var(--border-medium);
  border-radius: var(--radius-xl);
  background: var(--bg-secondary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
/* Per-question submit button spacing for listen & write */
.listenwrite-submit {
  align-self: flex-start;
  margin-top: var(--spacing-sm);
}

.listenwrite-container.correct {
  border-color: var(--success-color);
  box-shadow: 0 6px 18px rgba(34, 197, 94, 0.18);
}

.listenwrite-container.incorrect {
  border-color: var(--danger-color);
  box-shadow: 0 6px 18px rgba(239, 68, 68, 0.18);
}

.listenwrite-prompt {
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.listenwrite-input {
  width: 100%;
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-medium);
  background: var(--bg-secondary);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.listenwrite-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.25);
}

/* Matching */
.matching-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}
/* Per-question submit button spacing for matching */
.matching-submit {
  align-self: flex-start;
}

.matching-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  background: var(--bg-secondary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.matching-row.correct {
  border-color: var(--success-color);
  box-shadow: 0 6px 18px rgba(34, 197, 94, 0.18);
}

.matching-row.incorrect {
  border-color: var(--danger-color);
  box-shadow: 0 6px 18px rgba(239, 68, 68, 0.18);
}

.matching-prompt {
  flex: 1;
  font-weight: 600;
  color: var(--text-primary);
  padding-right: var(--spacing-md);
}

.matching-control {
  width: min(240px, 45%);
}

.matching-select {
  width: 100%;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-medium);
  font-size: var(--font-size-base);
  background: var(--bg-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.matching-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
}

/* Question Map */
.question-map {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.map-question {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
}

.map-question.pending {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
}

.map-question.completed {
  background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
  color: white;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.map-question.current {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  color: white;
  border: 3px solid var(--primary-color);
  box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.4), 0 6px 20px rgba(14, 165, 233, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  animation: currentPulse 2s ease-in-out infinite;
  transform: scale(1.1);
  font-weight: 700;
}

.map-question:hover {
  transform: scale(1.1);
}

.map-legend {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.legend-color {
  width: 20px;
  height: 20px;
  border-radius: var(--radius-sm);
}

.legend-color.completed {
  background-color: var(--success-color);
}

.legend-color.current {
  background-color: var(--primary-color);
}

.legend-color.pending {
  background-color: var(--bg-tertiary);
}

/* Pause Modal */
.pause-info {
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.pause-info i {
  font-size: var(--font-size-4xl);
  color: var(--warning-color);
  margin-bottom: var(--spacing-lg);
}

/* Submit Modal */
.submit-summary {
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.summary-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.summary-item:last-child {
  margin-bottom: 0;
}

.summary-item .label {
  font-weight: 500;
  color: var(--text-secondary);
}

.summary-item .value {
  font-weight: 700;
  font-family: var(--font-family-display);
  color: var(--primary-color);
}

.submit-warning {
  color: var(--warning-color);
  font-weight: 500;
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

/* Results Screen */
.results-screen {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
}

.results-container {
  --results-padding: clamp(0.75rem, 2.5vw, 1.5rem);
  --results-gap: clamp(0.5rem, 1.5vw, 1rem);
  --results-icon-size: clamp(2rem, 8vw, 3rem);
  --results-title-size: clamp(1.125rem, 3.5vw, 1.75rem);
  --results-subtitle-size: clamp(0.8rem, 2vw, 0.95rem);
  
  background-color: var(--bg-card);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  padding: var(--results-padding);
  text-align: center;
  max-width: min(600px, 95vw);
  width: 100%;
  max-height: 92vh;
  min-height: 0;
  animation: bounceIn 0.8s ease;
  display: flex;
  flex-direction: column;
  gap: var(--results-gap);
}

.results-header {
  flex-shrink: 0;
  min-height: 0;
  padding-bottom: var(--results-gap);
}

.results-icon {
  font-size: var(--results-icon-size);
  color: var(--success-color);
  margin-bottom: clamp(0.25rem, 1vw, 0.5rem);
  line-height: 1;
}

.results-title {
  font-family: var(--font-family-display);
  font-size: var(--results-title-size);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: clamp(0.25rem, 0.5vw, 0.375rem);
  line-height: 1.2;
}

.results-subtitle {
  font-size: var(--results-subtitle-size);
  color: var(--text-secondary);
  line-height: 1.4;
  margin: 0;
}

.results-content {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: var(--results-gap);
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 2px;
  
  /* Custom scrollbar */
  scrollbar-width: thin;
  scrollbar-color: var(--primary-color) transparent;
}

.results-content::-webkit-scrollbar {
  width: 4px;
}

.results-content::-webkit-scrollbar-track {
  background: transparent;
}

.results-content::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 2px;
}

.score-display {
  background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
  color: white;
  padding: clamp(0.75rem, 2.5vw, 1.25rem);
  border-radius: var(--radius-xl);
  flex-shrink: 0;
  min-height: 0;
}

.score-value {
  font-family: var(--font-family-display);
  font-size: clamp(1.5rem, 5vw, 2.5rem);
  font-weight: 700;
  margin-bottom: clamp(0.25rem, 0.5vw, 0.375rem);
  line-height: 1;
  margin: 0;
}

.score-label {
  font-size: clamp(0.75rem, 2vw, 1rem);
  opacity: 0.95;
  line-height: 1.3;
  margin: 0.25rem 0 0 0;
}

.results-stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(0.5rem, 1.5vw, 0.75rem);
  justify-content: center;
  flex-shrink: 0;
}

.stat-item {
  background-color: var(--bg-tertiary);
  padding: clamp(0.5rem, 1.5vw, 0.75rem) clamp(0.625rem, 2vw, 1rem);
  border-radius: var(--radius-lg);
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: clamp(0.25rem, 0.5vw, 0.375rem);
  flex: 0 1 auto;
  min-width: clamp(80px, 20vw, 110px);
  max-width: clamp(120px, 28vw, 160px);
}

.stat-value {
  font-family: var(--font-family-display);
  font-size: clamp(0.875rem, 2.8vw, 1.125rem);
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1.2;
  margin: 0;
  word-break: break-word;
  text-align: center;
}

.stat-label {
  font-size: clamp(0.65rem, 1.6vw, 0.8rem);
  color: var(--text-secondary);
  line-height: 1.3;
  margin: 0;
  text-align: center;
  white-space: nowrap;
}

.stat-value-datetime {
  font-family: var(--font-family-base);
  font-size: clamp(0.8rem, 2vw, 0.95rem);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
  margin: 0;
}

.stat-datetime {
  display: flex;
  flex-direction: column;
  gap: clamp(0.25rem, 0.5vw, 0.375rem);
  min-height: 0;
}

.stat-datetime span {
  display: inline-flex;
  align-items: center;
  gap: clamp(0.25rem, 1vw, 0.5rem);
  flex-wrap: wrap;
  font-size: clamp(0.75rem, 1.8vw, 0.875rem);
}

.stat-datetime i {
  font-size: clamp(0.75rem, 2vw, 0.95rem);
  color: var(--primary-color);
  background: rgba(0, 180, 216, 0.12);
  border-radius: 6px;
  padding: clamp(2px, 0.5vw, 4px);
  flex-shrink: 0;
}

.stat-datetime span span {
  font-family: var(--font-family-base);
  font-weight: 600;
  color: var(--text-primary);
}

.teacher-greeting {
  background: rgba(72, 187, 120, 0.15);
  border: 1px solid rgba(56, 161, 105, 0.35);
  color: #2f855a;
  padding: clamp(0.625rem, 2vw, 1rem);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: clamp(0.8rem, 2vw, 0.95rem);
  text-align: center;
  line-height: 1.4;
  flex-shrink: 0;
}

.waiting-message {
  background-color: var(--bg-tertiary);
  padding: clamp(0.875rem, 3vw, 1.5rem);
  border-radius: var(--radius-xl);
  border-left: 4px solid var(--info-color);
  flex-shrink: 0;
}

.waiting-message i {
  font-size: clamp(1.25rem, 4vw, 1.75rem);
  color: var(--info-color);
  margin-bottom: clamp(0.5rem, 1.5vw, 0.75rem);
  display: block;
}

.waiting-message h3 {
  font-size: clamp(0.95rem, 2.5vw, 1.125rem);
  margin: 0 0 clamp(0.375rem, 1vw, 0.5rem) 0;
  line-height: 1.3;
}

.waiting-message p {
  font-size: clamp(0.8rem, 2vw, 0.95rem);
  margin: 0;
  line-height: 1.5;
}

.results-actions {
  display: flex;
  gap: clamp(0.5rem, 1.5vw, 0.75rem);
  justify-content: center;
  flex-wrap: wrap;
  flex-shrink: 0;
  min-height: 0;
  padding-top: var(--results-gap);
}

.results-actions .btn {
  min-width: clamp(120px, 28vw, 160px);
  padding: clamp(0.5rem, 1.5vw, 0.75rem) clamp(0.875rem, 2.5vw, 1.25rem);
  font-size: clamp(0.8rem, 2vw, 0.95rem);
  white-space: nowrap;
}

#retryBtn {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  border: none;
  color: white;
  font-weight: 600;
  transition: all 0.3s ease;
}

#retryBtn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

#retryBtn .btn-text {
  margin-left: 0.5rem;
}

#retryBtn i {
  animation: rotate-once 0.6s ease;
}

@keyframes rotate-once {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

#retryBtn:hover i {
  animation: rotate-continuous 1s linear infinite;
}

@keyframes rotate-continuous {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Warning Modal */
.warning-modal .modal-content {
  border-left: 4px solid var(--danger-color);
}

.warning-content {
  text-align: center;
  padding: var(--spacing-lg) 0;
}

.warning-content i {
  font-size: var(--font-size-4xl);
  color: var(--danger-color);
  margin-bottom: var(--spacing-lg);
  animation: shake 0.5s ease-in-out;
}

.warning-count {
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: rgba(220, 53, 69, 0.1);
  border-radius: var(--radius-md);
  color: var(--danger-color);
  font-weight: 600;
}

/* Toast Messages */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: var(--z-tooltip);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.toast {
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  max-width: 350px;
  animation: slideInRight 0.3s ease;
}

.toast.success {
  border-left: 4px solid var(--success-color);
}

.toast.error {
  border-left: 4px solid var(--danger-color);
}

.toast.warning {
  border-left: 4px solid var(--warning-color);
}

.toast.info {
  border-left: 4px solid var(--info-color);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .nav-btn-left {
    left: -70px;
  }
  
  .nav-btn-right {
    right: -70px;
  }
  
  .nav-btn {
    width: 50px;
    height: 50px;
  }
  
  .nav-btn i {
    font-size: var(--font-size-base);
  }
}

@media (max-width: 768px) {
  .header-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .exam-header {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
    padding: var(--spacing-md);
  }
  
  .header-right {
    justify-content: center;
    flex-wrap: wrap;
  }
  
  .timer-container {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .exam-actions {
    justify-content: center;
    margin-top: var(--spacing-md);
  }
  
  /* Compact mobile layout */
  .exam-header.compact {
    flex-direction: row;
    align-items: center;
    text-align: left;
  }
  
 .exam-header.compact .header-right {
    flex-direction: column;
    /* align-items: center; */
    /* justify-content: flex-end; */
    gap: 10px;
}
  
  .exam-header.compact .timer-container {
    flex-direction: row;
    gap: var(--spacing-xs);
  }
  
  .exam-header.compact .exam-actions {
    margin-top: 0;
  }
  
  .question-container {
    padding: var(--spacing-md);
  }
  
  .question-card {
    padding: var(--spacing-lg);
    min-height: 75vh;
}
  
  .exam-footer {
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
  }
  
  .truefalse-options {
    grid-template-columns: 1fr;
  }
  
  .image-select-options {
    grid-template-columns: 1fr;
  }
  
  .question-map {
    grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
  }
  
  .map-question {
    width: 40px;
    height: 40px;
  }
  
  .results-actions {
    flex-direction: column;
  }
  
  .modal-content {
    width: 95%;
  }
  
  .toast-container {
    bottom: 10px;
    right: 10px;
    left: 10px;
  }
  
  .toast {
    max-width: none;
  }
  
  .nav-btn-left {
    left: 10px;
    top: 20px;
    transform: none;
    position: fixed; /* Changed to fixed for better mobile visibility */
  }
  
  .nav-btn-right {
    right: 10px;
    top: 20px;
    transform: none;
    position: fixed; /* Changed to fixed for better mobile visibility */
  }
  
  .nav-btn {
    width: 45px;
    height: 45px;
    z-index: var(--z-fixed); /* Higher z-index for mobile */
  }
  
  .nav-text {
    display: none;
  }
}

@media (max-width: 480px) {
  .exam-title {
    font-size: var(--font-size-xl);
  }
  
  .timer-value {
    font-size: var(--font-size-base);
  }
  
  .question-number {
    font-size: var(--font-size-lg);
  }
  
  .type-badge {
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .question-text {
    font-size: var(--font-size-base);
  }
  
  .option-letter {
    width: 30px;
    height: 30px;
    font-size: var(--font-size-base);
  }
  
  .results-title {
    font-size: var(--font-size-2xl);
  }
  
  .score-value {
    font-size: var(--font-size-3xl);
  }
  
  .nav-btn {
    width: 40px;
    height: 40px;
  }
  
  .nav-btn i {
    font-size: var(--font-size-sm);
  }
  
  .nav-btn-left {
    left: 5px;
    top: 15px;
  }
  
  .nav-btn-right {
    right: 5px;
    top: 15px;
  }
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideIn {
  from { 
    opacity: 0; 
    transform: translateY(20px); 
  }
  to { 
    opacity: 1; 
    transform: translateY(0); 
  }
}

@keyframes slideUp {
  from { 
    opacity: 0; 
    transform: translateY(50px); 
  }
  to { 
    opacity: 1; 
    transform: translateY(0); 
  }
}

@keyframes slideInRight {
  from { 
    opacity: 0; 
    transform: translateX(50px); 
  }
  to { 
    opacity: 1; 
    transform: translateX(0); 
  }
}

@keyframes bounceIn {
  0% { 
    opacity: 0; 
    transform: scale(0.3); 
  }
  50% { 
    opacity: 1; 
    transform: scale(1.05); 
  }
  70% { 
    transform: scale(0.9); 
  }
  100% { 
    opacity: 1; 
    transform: scale(1); 
  }
}

@keyframes pulse {
  0%, 100% { 
    transform: scale(1); 
  }
  50% { 
    transform: scale(1.05); 
  }
}

@keyframes spin {
  to { 
    transform: rotate(360deg); 
  }
}

@keyframes bounce {
  0%, 20%, 53%, 80%, 100% { 
    transform: translateY(0); 
  }
  40%, 43% { 
    transform: translateY(-10px); 
  }
  70% { 
    transform: translateY(-5px); 
  }
  90% { 
    transform: translateY(-2px); 
  }
}

@keyframes shake {
  0%, 100% { 
    transform: translateX(0); 
  }
  10%, 30%, 50%, 70%, 90% { 
    transform: translateX(-5px); 
  }
  20%, 40%, 60%, 80% { 
    transform: translateX(5px); 
  }
}

@keyframes shimmer {
  to { 
    left: 100%; 
  }
}

@keyframes loading-progress {
  0% { width: 0%; }
  50% { width: 60%; }
  100% { width: 100%; }
}

/* Exam Container Background Animations */
@keyframes gridFlow {
  0% { 
    background-position: 0 0, 0 0; 
  }
  100% { 
    background-position: 80px 80px, 80px 80px; 
  }
}

@keyframes glowPulse {
  0% { 
    opacity: 0.08; 
    transform: scale(1);
  }
  100% { 
    opacity: 0.15; 
    transform: scale(1.1);
  }
}

@keyframes cloudDrift {
  0% { 
    transform: translate(0, 0) scale(1);
    opacity: 0.3;
  }
  100% { 
    transform: translate(40px, -25px) scale(1.15);
    opacity: 0.4;
  }
}

@keyframes heavenGlowBackground {
  0%, 100% { 
    opacity: 0.2;
    transform: rotate(0deg) scale(1);
  }
  50% { 
    opacity: 0.3;
    transform: rotate(5deg) scale(1.05);
  }
}

@keyframes nebulaFloat {
  0% { 
    transform: translate(0, 0) rotate(0deg);
    opacity: 0.3;
  }
  100% { 
    transform: translate(60px, 40px) rotate(15deg);
    opacity: 0.4;
  }
}

@keyframes organicFlow {
  0% { 
    transform: translate(0, 0) scale(1) rotate(0deg);
    opacity: 0.3;
  }
  100% { 
    transform: translate(-30px, 25px) scale(1.12) rotate(-8deg);
    opacity: 0.4;
  }
}

/* New Particle Animations */
@keyframes ufoFloat {
  0% { 
    background-position: 0% 0%;
    transform: translateY(0) scale(1);
  }
  25% {
    background-position: 30% 20%;
    transform: translateY(-15px) scale(1.1);
  }
  50% {
    background-position: 70% 40%;
    transform: translateY(-8px) scale(0.9);
  }
  75% {
    background-position: 40% 70%;
    transform: translateY(-25px) scale(1.2);
  }
  100% { 
    background-position: 0% 100%;
    transform: translateY(0) scale(1);
  }
}

@keyframes shootingStars {
  0% {
    transform: translateX(-100vw) translateY(100vh);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateX(100vw) translateY(-100vh);
    opacity: 0;
  }
}

/* Footer Styles */
.homework-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border-light);
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: var(--z-sticky);
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.footer-dmca {
  display: flex;
  align-items: center;
}

.dmca-badge {
  display: inline-flex;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.dmca-badge:hover {
  opacity: 1;
}

.dmca-badge img {
  height: 24px;
  width: auto;
  display: block;
}

.footer-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.footer-info p {
  margin: 0;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .footer-content {
    flex-direction: column;
    gap: var(--spacing-xs);
    text-align: center;
  }
  
  .dmca-badge img {
    height: 20px;
  }
  
  .footer-info p {
    font-size: 0.625rem;
  }
}

/* Dark mode footer */
[data-theme="dark"] .homework-footer {
  background: rgba(30, 30, 30, 0.95);
  border-top-color: var(--border-light);
}

@keyframes starfieldTwinkle {
  0%, 100% {
    opacity: 0.2;
    filter: brightness(1);
  }
  50% {
    opacity: 0.3;
    filter: brightness(1.5);
  }
}

@keyframes cometsFly {
  0% {
    background-position: 0% 0%, 10% 5%, 20% 10%, 30% 15%, 40% 20%, 50% 25%, 60% 30%, 70% 35%, 80% 40%, 90% 45%;
  }
  100% {
    background-position: 100% 100%, 110% 105%, 120% 110%, 130% 115%, 140% 120%, 150% 125%, 160% 130%, 170% 135%, 180% 140%, 190% 145%;
  }
}

@keyframes fishSwim {
  0% {
    background-position: 10% 20%, 25% 35%, 40% 50%, 15% 65%, 55% 72%, 30% 82%;
    transform: scaleX(1) translateX(0);
  }
  25% {
    background-position: 30% 25%, 45% 40%, 60% 55%, 35% 70%, 75% 77%, 50% 87%;
    transform: scaleX(1) translateX(20px);
  }
  50% {
    background-position: 50% 30%, 65% 45%, 80% 60%, 55% 75%, 95% 82%, 70% 92%;
    transform: scaleX(-1) translateX(40px);
  }
  75% {
    background-position: 70% 35%, 85% 50%, 100% 65%, 75% 80%, 115% 87%, 90% 97%;
    transform: scaleX(-1) translateX(20px);
  }
  100% {
    background-position: 90% 40%, 105% 55%, 120% 70%, 95% 85%, 135% 92%, 110% 102%;
    transform: scaleX(1) translateX(0);
  }
}

@keyframes leafDrift {
  0%, 100% { 
    transform: translate(0, 0) rotate(0deg);
    opacity: 0.3;
  }
  50% { 
    transform: translate(20px, -15px) rotate(5deg);
    opacity: 0.4;
    opacity: 0.12;
  }
}

/* Print Styles */
@media print {
  .exam-header,
  .exam-footer,
  .modal-overlay,
  .toast-container {
    display: none !important;
  }
  
  .exam-container {
    background: white !important;
  }
  
  .question-card {
    box-shadow: none !important;
    border: 1px solid #000 !important;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --border-light: #000;
    --border-medium: #000;
    --border-dark: #000;
    --shadow-sm: 0 2px 4px #000;
    --shadow-md: 0 4px 6px #000;
    --shadow-lg: 0 10px 15px #000;
  }
}

/* Focus styles for accessibility */
.btn:focus,
.option-item:focus,
.blank-input:focus,
.writing-textarea:focus,
.arrange-item:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Theme Variants */
body.exam-theme-classic {
  --primary-color: #00b4d8;
  --secondary-color: #0077b6;
  --accent-color: #90e0ef;
  --bg-primary: #f7f9fc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #eef3fb;
  --text-primary: #1b263b;
  --text-secondary: #52616b;
}

body.exam-theme-midnight {
  --primary-color: #4c6ef5;
  --secondary-color: #364fc7;
  --accent-color: #748ffc;
  --bg-primary: #0b1026;
  --bg-secondary: rgba(20, 27, 58, 0.92);
  --bg-tertiary: rgba(76, 110, 245, 0.18);
  --bg-card: rgba(20, 27, 58, 0.92);
  --text-primary: #e2e8f0;
  --text-secondary: #a5b4fc;
  --text-muted: rgba(197, 206, 255, 0.7);
  --border-light: rgba(116, 143, 252, 0.35);
  color: #e2e8f0;
}

body.exam-theme-aurora {
  --primary-color: #00c6ff;
  --secondary-color: #0072ff;
  --accent-color: #ffee99;
  --bg-primary: #0f172a;
  --bg-secondary: rgba(15, 23, 42, 0.9);
  --bg-tertiary: rgba(0, 198, 255, 0.18);
  --bg-card: rgba(15, 23, 42, 0.9);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: rgba(148, 163, 184, 0.75);
  --border-light: rgba(0, 198, 255, 0.35);
}

/* Background Variants */
body.exam-bg-default {
  background-image: none;
}

body.exam-bg-grid {
  background-image: linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px),
                    linear-gradient(180deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}

body.exam-bg-wave {
  background-image: radial-gradient(circle at 10% 20%, rgba(0, 150, 255, 0.25) 0%, transparent 50%),
                    radial-gradient(circle at 80% 0%, rgba(116, 143, 252, 0.25) 0%, transparent 45%),
                    radial-gradient(circle at 50% 80%, rgba(0, 198, 255, 0.2) 0%, transparent 40%);
}

/* Screen reader only content */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.hidden{
  display:none !important;
}

/* ===========================================
   THEME COMPATIBILITY AND CONTRAST FIXES
   Ensures readable text with all theme combinations
   =========================================== */

/* Force proper contrast for main containers */
body,
.homework-container,
.exam-container,
.question-container {
  color: var(--text-primary) !important;
  background-color: var(--background-color) !important;
}

/* Cards and modals */
.card,
.modal-content,
.question-card,
.homework-card,
.exam-card {
  background-color: var(--surface-color) !important;
  color: var(--text-primary) !important;
  border-color: var(--border-color) !important;
}

/* Buttons */
.btn-primary {
  background-color: var(--primary-color) !important;
  color: var(--text-inverse) !important;
  border-color: var(--primary-color) !important;
}

.btn-secondary {
  background-color: var(--secondary-color) !important;
  color: var(--text-inverse) !important;
  border-color: var(--secondary-color) !important;
}

/* Text elements */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary) !important;
}

p, span, div {
  color: inherit;
}

.text-muted {
  color: var(--text-muted) !important;
}

.text-secondary {
  color: var(--text-secondary) !important;
}

/* Input elements */
input, textarea, select {
  background-color: var(--surface-color) !important;
  color: var(--text-primary) !important;
  border-color: var(--border-color) !important;
}

input:focus, textarea:focus, select:focus {
  border-color: var(--border-focus) !important;
}

/* Modals specific fixes */
.modal-header {
  background-color: var(--surface-color) !important;
  color: var(--text-primary) !important;
  border-bottom-color: var(--border-color) !important;
}

.modal-body {
  background-color: var(--surface-color) !important;
  color: var(--text-primary) !important;
}

.modal-footer {
  background-color: var(--surface-color) !important;
  border-top-color: var(--border-color) !important;
}

/* Question map specific fixes */
.question-map-item {
  color: var(--text-primary) !important;
  background-color: var(--surface-color) !important;
  border-color: var(--border-color) !important;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  padding: 8px 12px;
  font-weight: 600;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.question-map-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border-color: var(--primary-color);
}

.question-map-item.current {
  background: linear-gradient(135deg, var(--primary-color, #0ea5e9) 0%, var(--accent-color, #8b5cf6) 100%) !important;
  color: var(--text-inverse, #ffffff) !important;
  border: 3px solid var(--primary-color, #0ea5e9) !important;
  box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.4), 0 6px 20px rgba(14, 165, 233, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.2) !important;
  animation: currentPulse 2s ease-in-out infinite;
  transform: scale(1.1);
  font-weight: 700;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.question-map-item.completed {
  background: linear-gradient(135deg, var(--success-color, #10b981) 0%, #059669 100%) !important;
  color: var(--text-inverse, #ffffff) !important;
  border-color: var(--success-color, #10b981) !important;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.question-map-item.pending {
  background-color: var(--hover-color, #f8fafc) !important;
  color: var(--text-secondary, #64748b) !important;
  border-color: var(--border-color, #e2e8f0) !important;
}

.question-map-item.pending:hover {
  background-color: var(--primary-light, #e0f2fe) !important;
  color: var(--primary-color, #0ea5e9) !important;
  border-color: var(--primary-color, #0ea5e9) !important;
}

/* Navigation and header fixes */
.navbar, .header {
  background: var(--header-bg) !important;
  color: var(--header-text) !important;
}

/* Dark theme specific overrides */
[data-theme="dark"] body,
[data-theme="dark"] .homework-container {
  background-color: var(--background-color) !important;
  color: var(--text-primary) !important;
}

[data-theme="dark"] .exam-header {
  background: var(--header-bg, linear-gradient(135deg, #1e293b 0%, #334155 100%)) !important;
  color: var(--header-text, #ffffff) !important;
}

/* Enhanced Progress Container Theme Support */
[data-theme="sunset"] .compact-progress-container {
  background: linear-gradient(135deg, #f97316 0%, #ef4444 50%, #ec4899 100%) !important;
}

[data-theme="forest"] .compact-progress-container {
  background: linear-gradient(135deg, #059669 0%, #0d9488 50%, #10b981 100%) !important;
}

[data-theme="dark"] .compact-progress-container {
  background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%) !important;
}

[data-theme="space"] .compact-progress-container {
  background: linear-gradient(135deg, #7c3aed 0%, #3b82f6 50%, #06b6d4 100%) !important;
}

[data-theme="heaven"] .compact-progress-container {
  background: linear-gradient(135deg, #8ecae6 0%, #bde0fe 50%, #ffd6cc 100%) !important;
}

/* Question Map Animations */
@keyframes currentPulse {
  0%, 100% {
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.4), 0 6px 20px rgba(14, 165, 233, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
  }
  50% {
    box-shadow: 0 0 0 7px rgba(14, 165, 233, 0.3), 0 8px 25px rgba(14, 165, 233, 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transform: scale(1.15);
  }
}

/* Theme-specific question map colors */
[data-theme="sunset"] .question-map-item.current {
  background: linear-gradient(135deg, #f97316 0%, #ec4899 100%) !important;
  border: 3px solid #f97316 !important;
  box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.4), 0 6px 20px rgba(249, 115, 22, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.2) !important;
}

[data-theme="forest"] .question-map-item.current {
  background: linear-gradient(135deg, #059669 0%, #0d9488 100%) !important;
  border: 3px solid #059669 !important;
  box-shadow: 0 0 0 4px rgba(5, 150, 105, 0.4), 0 6px 20px rgba(5, 150, 105, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.2) !important;
}

[data-theme="dark"] .question-map-item.current {
  background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%) !important;
  border: 3px solid #3b82f6 !important;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.4), 0 6px 20px rgba(59, 130, 246, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.2) !important;
}

/* Header and Footer Text Contrast Fixes */
.exam-header {
  background: var(--header-bg, linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%)) !important;
  color: var(--header-text, #ffffff) !important;
}

.exam-header,
.exam-header * {
  color: var(--header-text, #ffffff) !important;
}

.exam-header .exam-title {
  color: var(--header-text, #ffffff) !important;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.exam-header .exam-subtitle {
  color: var(--header-text, rgba(255, 255, 255, 0.9)) !important;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.exam-header .timer-label,
.exam-header .timer-value,
.exam-header .exam-user-label,
.exam-header .exam-user-name {
  color: var(--header-text, #ffffff) !important;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* Ensure button text is readable in header */
.exam-header .btn {
  color: var(--header-text, #ffffff) !important;
  background-color: rgba(255, 255, 255, 0.1) !important;
  border-color: rgba(255, 255, 255, 0.2) !important;
}

.exam-header .btn:hover {
  background-color: rgba(255, 255, 255, 0.2) !important;
  border-color: rgba(255, 255, 255, 0.3) !important;
}

.exam-footer {
  background: var(--surface-color, #ffffff) !important;
  color: var(--text-primary, #1f2937) !important;
  border-top: 1px solid var(--border-color, #e5e7eb) !important;
}

.exam-footer .exam-info-footer span {
  color: var(--text-secondary, #4b5563) !important;
}

.exam-footer .btn:hover {
  background-color: var(--primary-hover, #059669) !important;
  border-color: var(--primary-hover, #059669) !important;
}

/* ========================================
   COMPACT SETTINGS STYLES
   ======================================== */

/* Compact modal body */
.settings-body-compact {
  padding: 1rem !important;
  max-height: 70vh;
  overflow-y: auto;
}

/* Compact sections */
.settings-section-compact {
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-light);
}

.settings-section-compact:last-child {
  margin-bottom: 0;
  border-bottom: none;
}

.settings-section-compact h4 {
  margin: 0 0 0.75rem 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Grid layout for controls */
.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.settings-control-inline {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.settings-control-inline label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin: 0;
}

.settings-control-inline input[type="range"] {
  width: 100%;
  height: 4px;
  background: var(--border-light);
  border-radius: 2px;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.settings-control-inline input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--primary-color);
  border-radius: 50%;
  cursor: pointer;
}

/* Compact buttons */
.settings-buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.8rem;
  border-radius: 0.375rem;
  min-width: auto;
}

.btn-sm i {
  font-size: 0.8rem;
}

/* Compact control layout */
.settings-control-compact {
  margin-bottom: 0.75rem;
}

.settings-label-compact {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.375rem;
}

/* Compact chip rows */
.settings-chip-row-compact {
  display: flex;
  gap: 0.375rem;
  flex-wrap: wrap;
}

.settings-chip-sm {
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  border-radius: 0.375rem;
  border: 1px solid var(--border-medium);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: auto;
}

.settings-chip-sm:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-dark);
}

.settings-chip-sm.active {
  background: var(--primary-color);
  color: var(--text-inverse);
  border-color: var(--primary-color);
}

/* Settings row layout */
.settings-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.guest-nickname-row {
  transition: opacity var(--transition-fast, 0.2s ease);
}

.guest-nickname-row.is-disabled {
  opacity: 0.5;
  pointer-events: none;
}

.settings-actions-compact {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

/* Compact modal content */
.settings-content {
  max-width: 500px !important;
  max-height: 80vh !important;
}

.settings-content .modal-header {
  padding: 1rem 1.25rem 0.75rem !important;
}

.settings-content .modal-header h3 {
  font-size: 1.1rem !important;
  margin: 0 !important;
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .settings-grid {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  
  .settings-row {
    flex-direction: column;
    gap: 0.75rem;
  }
  
  .settings-actions-compact {
    align-self: stretch;
  }
  
  .settings-chip-row-compact {
    justify-content: center;
  }
  
  .settings-content {
    max-width: 95vw !important;
    margin: 1rem !important;
  }
}

/* ========================================
   TIME DISPLAY AND NOTIFICATIONS
   ======================================== */

/* Time display styles */
.time-display {
  font-family: 'Courier New', monospace;
  font-weight: bold;
  font-size: 1.1rem;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.time-display.warning {
  color: var(--warning-color);
  animation: timeWarning 2s ease-in-out infinite;
}

.time-display.critical {
  color: var(--danger-color);
  animation: timeCritical 1s ease-in-out infinite;
}

@keyframes timeWarning {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@keyframes timeCritical {
  0%, 100% { 
    opacity: 1; 
    transform: scale(1);
  }
  50% { 
    opacity: 0.8; 
    transform: scale(1.05);
  }
}

/* Time progress bar */
.time-progress-fill {
  transition: all 0.3s ease;
  background: linear-gradient(90deg, var(--success-color), var(--primary-color));
}

.time-progress-fill.warning {
  background: linear-gradient(90deg, var(--warning-color), var(--primary-color));
}

.time-progress-fill.critical {
  background: linear-gradient(90deg, var(--danger-color), var(--warning-color));
  animation: progressCritical 1s ease-in-out infinite;
}

@keyframes progressCritical {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

/* Notification styles */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  color: white;
  font-weight: 600;
  z-index: 10000;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  max-width: 350px;
  word-wrap: break-word;
}

.notification-info {
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
}

.notification-warning {
  background: linear-gradient(135deg, #f59e0b, #d97706);
}

.notification-critical {
  background: linear-gradient(135deg, #ef4444, #dc2626);
}

.notification-success {
  background: linear-gradient(135deg, #10b981, #059669);
}

/* Notification animations */
@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOutRight {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* Time calculation preview */
.time-preview {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin: 1rem 0;
}

.time-preview h4 {
  margin: 0 0 0.5rem 0;
  color: var(--text-primary);
  font-size: 1rem;
}

.time-preview-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.25rem 0;
  font-size: 0.9rem;
}

.time-preview-label {
  color: var(--text-secondary);
}

.time-preview-value {
  color: var(--text-primary);
  font-weight: 600;
  font-family: 'Courier New', monospace;
}

.time-preview-total {
  border-top: 1px solid var(--border-light);
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  font-weight: bold;
}

.time-preview-total .time-preview-value {
  color: var(--primary-color);
  font-size: 1.1rem;
}

/* Time settings controls */
.time-settings-control {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0.75rem 0;
}

.time-settings-label {
  min-width: 140px;
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.time-settings-input {
  flex: 1;
  padding: 0.5rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.9rem;
}

.time-settings-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.time-settings-unit {
  color: var(--text-muted);
  font-size: 0.85rem;
  min-width: 60px;
}

/* Responsive time display */
@media (max-width: 640px) {
  .notification {
    right: 10px;
    left: 10px;
    max-width: none;
  }
  
  .time-display {
    font-size: 1rem;
  }
  
  .time-settings-control {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }
  
  .time-settings-label {
    min-width: auto;
  }
}

/* ========================================
   LOADING LANGUAGE SELECTOR
   ======================================== */

.loading-language-selector {
  margin: 2rem 0;
  padding: 1.5rem;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  width: max-content
}

.language-selector-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.language-selector-label i {
  color: var(--primary-color);
  font-size: 1.1rem;
}

.language-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.875rem 0.75rem;
  background: var(--bg-secondary);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 500;
  color: var(--text-secondary);
  min-height: 70px;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.language-chip::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.1) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.language-chip:hover::before {
  transform: translateX(100%);
}

.language-chip:hover {
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: var(--bg-tertiary);
}

.language-chip.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--text-inverse);
  box-shadow: var(--shadow-green);
}

.language-chip.active:hover {
  background: var(--secondary-color);
  border-color: var(--secondary-color);
}

.language-chip .flag {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
  display: block;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.1));
}

.language-chip span:last-child {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* Language chip animations */
@keyframes languageSelected {
  0% { transform: scale(1); }
  50% { transform: scale(0.95); }
  100% { transform: scale(1); }
}

.language-chip.selecting {
  animation: languageSelected 0.3s ease;
}

/* Loading states */
.language-chip.loading {
  pointer-events: none;
  opacity: 0.7;
}

.language-chip.loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

@keyframes spin {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Responsive design */
@media (max-width: 640px) {
  .loading-language-selector {
    margin: 1rem 0;
    padding: 1rem;
  }
  
  .language-chips {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }
  
  .language-chip {
    padding: 0.75rem 0.5rem;
    min-height: 60px;
  }
  
  .language-chip .flag {
    font-size: 1.25rem;
  }
}

/* ========================================
   PAUSE MODAL ENHANCEMENTS
   ======================================== */

/* Pause modal specific styling */
.pause-modal-content {
  max-width: 450px;
  text-align: center;
}

.pause-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
}

.pause-icon {
  font-size: 3rem;
  color: var(--warning-color);
  margin-bottom: 0.5rem;
  animation: pulse 2s infinite;
}

.pause-info p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

.pause-timer {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  background: var(--bg-tertiary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.timer-display {
  font-family: 'Courier New', monospace;
  font-weight: bold;
  color: var(--primary-color);
}

.pause-actions {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.btn-resume {
  min-width: 120px;
  font-weight: 600;
}

.btn-resume:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-settings {
  min-width: 100px;
}

/* Pause modal animations */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.05);
  }
}

/* Responsive pause modal */
@media (max-width: 640px) {
  .pause-modal-content {
    max-width: 95vw;
    margin: 1rem;
  }
  
  .pause-actions {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .btn-resume,
  .btn-settings {
    width: 100%;
    min-width: auto;
  }
}

/* ==================== Review Answers UI ==================== */

.review-answers-container {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 10000;
  overflow-y: auto;
  animation: fadeIn 0.3s ease;
  overscroll-behavior: contain;
}

.review-answers-container.hidden {
  display: none;
}

/* Review Loading State */
.review-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  gap: 1.5rem;
  padding: 2rem;
}

.review-loading .spinner {
  width: 3rem;
  height: 3rem;
  border: 4px solid rgba(16, 185, 129, 0.2);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.review-loading p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Review Error State */
.review-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  gap: 1.5rem;
  padding: 2rem;
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
}

.review-error i {
  font-size: 4rem;
  color: var(--danger-color);
  opacity: 0.9;
}

.review-error h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.review-error p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
}

.review-error .btn {
  min-width: 150px;
  margin-top: 1rem;
}

/* Header - Compact & Fixed */
.review-header {
  position: sticky;
  top: 0;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  padding: 1rem 1.5rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.review-title h2 {
  margin: 0;
  color: white;
  font-size: 1.5rem;
  font-weight: 700;
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.review-subtitle {
  margin: 0.25rem 0 0 0;
  color: rgba(255,255,255,0.9);
  font-size: 0.875rem;
  font-weight: 400;
}

.btn-close {
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.3);
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  color: white;
  font-size: 1.1rem;
}

.btn-close:hover {
  background: var(--danger-color);
  border-color: var(--danger-color);
  transform: scale(1.05);
}

/* Content - Optimized Spacing */
.review-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-bottom: 5rem;
}

/* Question Card - Cleaner Design */
.review-question-card {
  background: var(--bg-card);
  border-radius: 1rem;
  padding: clamp(0.875rem, 3vw, 1.5rem);
  margin-bottom: clamp(0.75rem, 2vw, 1.25rem);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  border-left: 5px solid var(--border-light);
  transition: all 0.3s ease;
  position: relative;
  flex-shrink: 1;
  min-height: 0;
}

.review-question-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  transition: all 0.3s;
  border-radius: 1rem 0 0 1rem;
}

.review-question-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}

.review-question-card.correct::before {
  background: linear-gradient(180deg, var(--success-color) 0%, #059669 100%);
}

.review-question-card.wrong::before {
  background: linear-gradient(180deg, var(--danger-color) 0%, #dc2626 100%);
}

.review-question-card.skipped::before {
  background: linear-gradient(180deg, var(--warning-color) 0%, #d97706 100%);
}

.review-question-card.correct {
  border-left-color: var(--success-color);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.02) 0%, var(--bg-card) 100%);
}

.review-question-card.wrong {
  border-left-color: var(--danger-color);
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.02) 0%, var(--bg-card) 100%);
}

.review-question-card.skipped {
  border-left-color: var(--warning-color);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.02) 0%, var(--bg-card) 100%);
}

/* Header - More Compact */
.review-question-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--border-light);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.review-question-number {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  color: var(--text-primary);
  font-size: 1.125rem;
}

.review-question-number .type-badge {
  font-size: 0.75rem;
  padding: 0.375rem 0.75rem;
  background: var(--bg-tertiary);
  border-radius: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

/* Status Badge - Minimal Design */
.review-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 1.5rem;
  font-weight: 600;
  font-size: 0.875rem;
  white-space: nowrap;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.review-status-badge i {
  font-size: 1rem;
}

.review-status-badge.correct {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: white;
}

.review-status-badge.wrong {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: white;
}

.review-status-badge.skipped {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: white;
}

/* Media - Responsive Images */
.review-question-media {
  margin: 1.25rem 0;
  text-align: center;
  border-radius: 0.75rem;
  overflow: hidden;
}

.review-question-media img {
  max-width: 100%;
  height: auto;
  max-height: 400px;
  border-radius: 0.75rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  object-fit: contain;
}

.review-question-media video,
.review-question-media audio {
  max-width: 100%;
  border-radius: 0.75rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Question Text - Better Readability */
.review-question-text {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--text-primary);
  margin: 1.25rem 0;
  font-weight: 500;
  padding: 0 0.25rem;
}

/* Options - Cleaner Layout */
.review-options {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  margin: 1.25rem 0;
  padding: 0 0.25rem;
}

.review-option {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-radius: 0.75rem;
  border: 2px solid var(--border-light);
  background: var(--bg-secondary);
  transition: all 0.2s ease;
  position: relative;
}

.review-option:hover {
  border-color: var(--border-medium);
  background: var(--bg-tertiary);
}

.review-option.correct-option {
  border-color: var(--success-color);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, rgba(16, 185, 129, 0.02) 100%);
}

.review-option.wrong-option {
  border-color: var(--danger-color);
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.05) 0%, rgba(239, 68, 68, 0.02) 100%);
}

.review-option.user-choice {
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
  border-color: var(--info-color);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(59, 130, 246, 0.02) 100%);
}


/* Option Marker - Refined */
.option-marker {
  width: 2.25rem;
  height: 2.25rem;
  min-width: 2.25rem;
  border-radius: 0.625rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  flex-shrink: 0;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.correct-option .option-marker {
  background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
  color: white;
  box-shadow: 0 4px 8px rgba(16, 185, 129, 0.3);
}

.wrong-option .option-marker {
  background: linear-gradient(135deg, var(--danger-color) 0%, #dc2626 100%);
  color: white;
  box-shadow: 0 4px 8px rgba(239, 68, 68, 0.3);
}

.option-content {
  flex: 1;
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.6;
  padding-right: 0.5rem;
}

/* Option Indicators - Icon Style */
.option-indicators {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-left: auto;
  flex-shrink: 0;
}

.user-icon {
  color: var(--info-color);
  font-size: 1.25rem;
  filter: drop-shadow(0 2px 4px rgba(59, 130, 246, 0.4));
}

.correct-icon {
  color: var(--success-color);
  font-size: 1.25rem;
  filter: drop-shadow(0 2px 4px rgba(16, 185, 129, 0.4));
}

/* True/False Options - Grid Layout */
.truefalse-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.truefalse-options .review-option {
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem;
  text-align: center;
  min-height: 120px;
}

.truefalse-options .review-option i:first-child {
  font-size: 2.5rem;
  opacity: 0.9;
}

/* Explanation - Info Box */
.review-explanation {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.06) 0%, rgba(99, 102, 241, 0.04) 100%);
  border-left: 4px solid var(--info-color);
  border-radius: 0.75rem;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.08);
}

.explanation-header {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--info-color);
  margin-bottom: 0.75rem;
  font-weight: 700;
  font-size: 1rem;
}

.explanation-header i {
  font-size: 1.125rem;
}

.explanation-content {
  color: var(--text-secondary);
  line-height: 1.75;
  font-size: 1rem;
}

/* Answer Sections - General */
.review-answer-section {
  margin: 1rem 0;
}

.your-answer-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  font-size: 0.9375rem;
}

.your-answer-label i {
  color: var(--info-color);
}

/* Writing Answer */
.writing-answer {
  padding: 1rem;
  background: var(--bg-secondary);
  border: 2px solid var(--border-light);
  border-radius: 0.5rem;
  line-height: 1.65;
  color: var(--text-primary);
  font-size: 0.9375rem;
  min-height: 80px;
}

.no-answer {
  color: var(--text-muted);
  font-style: italic;
}

.essay-notice {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding: 0.625rem 0.875rem;
  background: rgba(245, 158, 11, 0.1);
  border-radius: 0.5rem;
  color: var(--warning-color);
  font-size: 0.8125rem;
  border: 1px solid rgba(245, 158, 11, 0.2);
}

/* Answer Comparison - Side by Side */
.answer-comparison {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.875rem;
}

.answer-item {
  padding: 1rem;
  border-radius: 0.5rem;
  border: 2px solid var(--border-light);
  background: var(--bg-secondary);
}

.answer-item.your-answer {
  background: rgba(59, 130, 246, 0.03);
  border-color: rgba(59, 130, 246, 0.3);
}

.answer-item.correct-answer {
  background: rgba(16, 185, 129, 0.03);
  border-color: rgba(16, 185, 129, 0.3);
}

.answer-label {
  font-weight: 600;
  margin-bottom: 0.625rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.answer-item.your-answer .answer-label::before {
  content: '👤';
  font-size: 1rem;
}

.answer-item.correct-answer .answer-label::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.25rem;
  height: 1.25rem;
  background: var(--success-color);
  color: white;
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
}

.answer-value {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 0.9375rem;
}

/* Image Grid - Responsive */
.review-image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.875rem;
  margin: 1rem 0;
}

.review-image-item {
  position: relative;
  border-radius: 0.625rem;
  overflow: hidden;
  border: 3px solid var(--border-light);
  transition: all 0.2s;
  aspect-ratio: 4/3;
}

.review-image-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.review-image-item.correct-option {
  border-color: var(--success-color);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.review-image-item.wrong-option {
  border-color: var(--danger-color);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.review-image-item.user-choice {
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.image-indicators {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  display: flex;
  gap: 0.375rem;
}

.image-indicators i {
  width: 1.75rem;
  height: 1.75rem;
  background: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  font-size: 0.875rem;
}

/* Arrange Comparison */
.arrange-comparison {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.arrange-column {
  padding: 1rem;
  border-radius: 0.5rem;
  border: 2px solid var(--border-light);
  background: var(--bg-secondary);
}

.arrange-label {
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed var(--border-light);
}

.arrange-list {
  padding-left: 1.25rem;
  margin: 0.5rem 0 0 0;
}

.arrange-list li {
  padding: 0.5rem 0;
  color: var(--text-secondary);
  line-height: 1.5;
  font-size: 0.9375rem;
}

.arrange-list li::marker {
  font-weight: 700;
}

.arrange-column:first-child {
  background: rgba(59, 130, 246, 0.03);
  border-color: rgba(59, 130, 246, 0.3);
}

.arrange-column:first-child .arrange-label {
  color: var(--info-color);
}

.arrange-column:last-child {
  background: rgba(16, 185, 129, 0.03);
  border-color: rgba(16, 185, 129, 0.3);
}

.arrange-column:last-child .arrange-label {
  color: var(--success-color);
}

/* Footer - Sticky Bottom */
.review-footer {
  position: sticky;
  bottom: 0;
  background: linear-gradient(to top, var(--bg-secondary) 0%, rgba(255,255,255,0.98) 100%);
  padding: 1rem 1.5rem;
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.08);
  display: flex;
  justify-content: center;
  gap: 1rem;
  border-top: 1px solid var(--border-light);
  backdrop-filter: blur(10px);
}

.review-footer .btn {
  min-width: 160px;
}

/* Responsive Design - Mobile First */
@media (max-width: 768px) {
  .review-header {
    padding: 0.875rem 1rem;
  }
  
  .review-title h2 {
    font-size: 1.25rem;
  }
  
  .review-subtitle {
    font-size: 0.8125rem;
  }
  
  .btn-close {
    width: 2rem;
    height: 2rem;
    font-size: 1rem;
  }
  
  .review-content {
    padding: 0.875rem;
    gap: 0.875rem;
  }
  
  .review-question-card {
    padding: 1rem;
  }
  
  .review-question-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.625rem;
  }
  
  .review-status-badge {
    align-self: flex-start;
  }
  
  .answer-comparison,
  .arrange-comparison {
    grid-template-columns: 1fr;
  }
  
  .truefalse-options {
    grid-template-columns: 1fr;
  }
  
  .truefalse-options .review-option {
    min-height: 80px;
  }
  
  .review-image-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .review-question-text {
    font-size: 0.9375rem;
  }
  
  .option-content {
    font-size: 0.875rem;
  }
  
  .review-footer {
    padding: 0.875rem 1rem;
  }
  
  .review-footer .btn {
    min-width: 120px;
    font-size: 0.875rem;
  }
}

/* Extra Small Devices */
@media (max-width: 480px) {
  .review-title h2 {
    font-size: 1.125rem;
  }
  
  .review-content {
    padding: 0.75rem;
  }
  
  .review-image-grid {
    grid-template-columns: 1fr;
  }
  
  .option-marker {
    width: 1.625rem;
    height: 1.625rem;
    min-width: 1.625rem;
    font-size: 0.8125rem;
  }
  
  .review-footer .btn {
    width: 100%;
    min-width: auto;
  }
}

/* ============================================
   IMMEDIATE FEEDBACK OVERLAY
   ============================================ */
.immediate-feedback-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: auto;
  min-width: 300px;
  max-width: 500px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  border-radius: 2rem;
  animation: popIn 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  padding: 3rem 2.5rem;
  text-align: center;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.immediate-feedback-overlay.correct {
  border: 4px solid #4CAF50;
}

.immediate-feedback-overlay.correct::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, 
    transparent 30%, 
    rgba(76, 175, 80, 0.1) 50%, 
    transparent 70%);
  animation: shimmer 2s infinite;
}

.immediate-feedback-overlay.wrong {
  border: 4px solid #f44336;
}

.immediate-feedback-overlay.wrong::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, 
    transparent 30%, 
    rgba(244, 67, 54, 0.1) 50%, 
    transparent 70%);
  animation: shimmer 2s infinite;
}

@keyframes popIn {
  0% {
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.1);
  }
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%) translateY(-100%) rotate(45deg);
  }
  100% {
    transform: translateX(100%) translateY(100%) rotate(45deg);
  }
}

/* Fireworks particles */
.firework-particle {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 1001;
  box-shadow: 0 0 10px currentColor;
}

@keyframes fireworkExplode {
  0% {
    transform: translate(0, 0) scale(1);
    opacity: 1;
  }
  100% {
    transform: translate(var(--tx), var(--ty)) scale(0);
    opacity: 0;
  }
}

/* Confetti */
.confetti {
  position: absolute;
  width: 10px;
  height: 10px;
  pointer-events: none;
  z-index: 1001;
  animation: confettiFall 3s ease-out forwards;
  font-weight: bold;
}

@keyframes confettiFall {
  0% {
    transform: translateY(0) rotateZ(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(600px) rotateZ(720deg);
    opacity: 0;
  }
}

/* Clapping hands */
.clap-hands {
  position: absolute;
  font-size: 2.5rem;
  pointer-events: none;
  z-index: 1001;
  animation: clapAnimation 0.8s ease-out forwards;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

@keyframes clapAnimation {
  0%, 100% {
    transform: scale(0.8) rotate(-15deg);
    opacity: 0;
  }
  10%, 30%, 50% {
    transform: scale(1.2) rotate(10deg);
    opacity: 1;
  }
  20%, 40% {
    transform: scale(1.2) rotate(-10deg);
    opacity: 1;
  }
  60% {
    transform: scale(1.3) translateY(-30px) rotate(0deg);
    opacity: 0.7;
  }
}

/* Stars burst */
.star-burst {
  position: absolute;
  font-size: 2rem;
  pointer-events: none;
  z-index: 1001;
  animation: starBurst 1.2s ease-out forwards;
  filter: drop-shadow(0 0 5px currentColor);
}

@keyframes starBurst {
  0% {
    transform: translate(0, 0) scale(0) rotate(0deg);
    opacity: 1;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: translate(var(--tx), var(--ty)) scale(1.5) rotate(180deg);
    opacity: 0;
  }
}

.feedback-icon {
  font-size: 5rem;
  margin-bottom: 1rem;
  animation: iconBounce 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  position: relative;
  z-index: 1002;
}

.immediate-feedback-overlay.correct .feedback-icon {
  color: #4CAF50;
  filter: drop-shadow(0 4px 12px rgba(76, 175, 80, 0.4));
}

.immediate-feedback-overlay.wrong .feedback-icon {
  color: #f44336;
  filter: drop-shadow(0 4px 12px rgba(244, 67, 54, 0.4));
}

@keyframes iconBounce {
  0% {
    transform: scale(0) rotate(-180deg);
  }
  50% {
    transform: scale(1.3) rotate(10deg);
  }
  70% {
    transform: scale(0.9) rotate(-5deg);
  }
  100% {
    transform: scale(1) rotate(0deg);
  }
}

.feedback-text {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  animation: textSlideUp 0.5s ease-out;
  position: relative;
  z-index: 1002;
  letter-spacing: 0.5px;
}

.immediate-feedback-overlay.correct .feedback-text {
  color: #2E7D32;
}

.immediate-feedback-overlay.wrong .feedback-text {
  color: #C62828;
}

@keyframes textSlideUp {
  0% {
    transform: translateY(20px);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

.feedback-explanation {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  line-height: 1.5;
  margin-top: 1rem;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 0.5rem;
}

@keyframes scaleIn {
  from {
    transform: scale(0);
  }
  to {
    transform: scale(1);
  }
}

/* Highlight correct/wrong answers */
.option-item.correct-answer,
.truefalse-option.correct-answer,
.image-option.correct-answer {
  background: rgba(76, 175, 80, 0.3) !important;
  border: 3px solid var(--success-color) !important;
  position: relative;
}

.option-item.correct-answer::after,
.truefalse-option.correct-answer::after,
.image-option.correct-answer::after {
  content: "✓";
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--success-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1rem;
}

.option-item.wrong-answer,
.truefalse-option.wrong-answer,
.image-option.wrong-answer {
  background: rgba(244, 67, 54, 0.3) !important;
  border: 3px solid var(--danger-color) !important;
  position: relative;
}

.option-item.wrong-answer::after,
.truefalse-option.wrong-answer::after,
.image-option.wrong-answer::after {
  content: "✗";
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--danger-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1rem;
}

.option-item.correct-selected,
.truefalse-option.correct-selected,
.image-option.correct-selected {
  background: var(--success-color) !important;
  color: white !important;
  border: 3px solid var(--success-color) !important;
  position: relative;
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(76, 175, 80, 0.4);
}

.option-item.correct-selected::after,
.truefalse-option.correct-selected::after,
.image-option.correct-selected::after {
  content: "✓";
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 1.5rem;
  height: 1.5rem;
  background: rgba(255, 255, 255, 0.3);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1rem;
}

.option-item.correct-answer .option-letter,
.option-item.correct-selected .option-letter {
  background: var(--success-color) !important;
  color: white !important;
}

.option-item.wrong-answer .option-letter {
  background: var(--danger-color) !important;
  color: white !important;
}

.option-item.correct-selected .option-text,
.truefalse-option.correct-selected .truefalse-label {
  color: white !important;
}

/* Assignment grading section */
.assignment-grading-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  padding: clamp(1rem, 2vw, 1.5rem);
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.assignment-grading-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(16, 185, 129, 0.14), transparent 55%),
    radial-gradient(circle at bottom left, rgba(59, 130, 246, 0.16), transparent 60%);
  pointer-events: none;
  opacity: 0.75;
}

.assignment-grading-section > * {
  position: relative;
  z-index: 1;
}

.assignment-summary-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(148, 163, 184, 0.3);
  border-radius: var(--radius-xl);
  padding: clamp(0.85rem, 1.8vw, 1.25rem);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  backdrop-filter: blur(6px);
}

[data-theme="dark"] .assignment-summary-card {
  background: rgba(30, 41, 59, 0.65);
  border-color: rgba(148, 163, 184, 0.25);
}

.assignment-summary-card.with-icon {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: clamp(0.85rem, 2vw, 1.25rem);
}

.assignment-summary-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.assignment-summary-card .label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 0.15rem;
}

.assignment-summary-card .value {
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  font-weight: 700;
  color: var(--text-primary);
}

.am-icon {
  width: clamp(48px, 6vw, 60px);
  height: clamp(48px, 6vw, 60px);
  border-radius: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.18), rgba(59, 130, 246, 0.2));
  color: var(--primary-color);
  box-shadow: 0 10px 22px -12px rgba(16, 185, 129, 0.5);
}

.am-icon.orange {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.25), rgba(251, 191, 36, 0.28));
  color: #c2410c;
}

.am-icon.green {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.24), rgba(5, 150, 105, 0.28));
  color: #047857;
}

.am-icon.purple {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.24), rgba(59, 130, 246, 0.26));
  color: #4338ca;
}

.am-icon.blue {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.24), rgba(59, 130, 246, 0.28));
  color: #1d4ed8;
}

.am-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xs);
}

.am-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(241, 245, 249, 0.8);
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.am-badge.success {
  border-color: rgba(16, 185, 129, 0.35);
  background: rgba(167, 243, 208, 0.4);
  color: #065f46;
}

.am-badge.warning {
  border-color: rgba(245, 158, 11, 0.35);
  background: rgba(253, 230, 138, 0.35);
  color: #92400e;
}

.assignment-ungraded-controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  align-items: center;
  padding: clamp(0.75rem, 1.8vw, 1rem);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(148, 163, 184, 0.25);
  background: rgba(248, 250, 252, 0.8);
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .assignment-ungraded-controls {
  background: rgba(30, 41, 59, 0.65);
  border-color: rgba(148, 163, 184, 0.2);
}

.assignment-ungraded-controls .btn-group {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.4rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(255, 255, 255, 0.85);
  box-shadow: inset 0 1px 2px rgba(148, 163, 184, 0.2);
}

.assignment-ungraded-controls .toggle-btn {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.assignment-ungraded-controls .toggle-btn:hover {
  background: rgba(59, 130, 246, 0.1);
  color: var(--info-color);
  transform: translateY(-1px);
}

.assignment-ungraded-controls .toggle-btn.active {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.85), rgba(59, 130, 246, 0.85));
  color: #ffffff;
  box-shadow: 0 4px 12px -6px rgba(15, 118, 110, 0.6);
}

.assignment-ungraded-controls input[data-am-grade-search] {
  padding: 0.55rem 0.9rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(255, 255, 255, 0.85);
  min-width: clamp(200px, 24vw, 280px);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.assignment-ungraded-controls input[data-am-grade-search]:focus {
  border-color: rgba(59, 130, 246, 0.6);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
  background: #ffffff;
}

.assignment-ungraded-search {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
}

.assignment-ungraded-search i {
  color: inherit;
  font-size: 0.95rem;
}

.assignment-ungraded-list {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.assignment-list-placeholder {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  background: rgba(248, 250, 252, 0.9);
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.participant-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: clamp(0.95rem, 2vw, 1.35rem);
  padding: clamp(1.15rem, 2.4vw, 1.6rem);
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(148, 163, 184, 0.28);
  background: linear-gradient(155deg, rgba(255, 255, 255, 0.96) 0%, rgba(241, 245, 249, 0.9) 100%);
  box-shadow: 0 28px 62px -40px rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(4px);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  overflow: hidden;
}

.participant-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(110% 110% at 85% -10%, rgba(59, 130, 246, 0.18) 0%, rgba(59, 130, 246, 0) 60%);
  opacity: 0.9;
}

.participant-card > * {
  position: relative;
  z-index: 1;
}

.participant-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 34px 72px -46px rgba(15, 23, 42, 0.55);
  border-color: rgba(59, 130, 246, 0.4);
}

.participant-card.submission-card {
  gap: clamp(0.85rem, 1.8vw, 1.2rem);
}

.participant-card.submission-card::before {
  background: radial-gradient(105% 120% at 90% -20%, rgba(16, 185, 129, 0.18) 0%, rgba(16, 185, 129, 0) 62%);
}

[data-theme="dark"] .participant-card {
  background: rgba(30, 41, 59, 0.78);
  border-color: rgba(71, 85, 105, 0.5);
  box-shadow: 0 32px 68px -44px rgba(2, 6, 23, 0.85);
}

[data-theme="dark"] .participant-card::before {
  background: radial-gradient(120% 130% at 85% -10%, rgba(79, 70, 229, 0.35) 0%, rgba(79, 70, 229, 0) 60%);
}

[data-theme="dark"] .participant-card.submission-card::before {
  background: radial-gradient(115% 120% at 90% -20%, rgba(34, 197, 94, 0.28) 0%, rgba(34, 197, 94, 0) 62%);
}

.participant-header {
  display: flex;
  align-items: center;
  gap: clamp(0.85rem, 1.8vw, 1.2rem);
  flex-wrap: wrap;
}

.participant-avatar {
  width: clamp(56px, 7vw, 64px);
  height: clamp(56px, 7vw, 64px);
  border-radius: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1.35rem, 3vw, 1.6rem);
  font-weight: 700;
  background: linear-gradient(140deg, rgba(59, 130, 246, 0.16), rgba(30, 64, 175, 0.08));
  box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.25);
  color: #1d4ed8;
}

.participant-avatar.guest {
  background: linear-gradient(140deg, rgba(16, 185, 129, 0.22), rgba(5, 150, 105, 0.18));
  box-shadow: inset 0 0 0 1px rgba(16, 185, 129, 0.28);
  color: #047857;
}

[data-theme="dark"] .participant-avatar {
  background: linear-gradient(140deg, rgba(79, 70, 229, 0.28), rgba(59, 130, 246, 0.22));
  box-shadow: inset 0 0 0 1px rgba(99, 102, 241, 0.35);
  color: #c7d2fe;
}

[data-theme="dark"] .participant-avatar.guest {
  background: linear-gradient(140deg, rgba(34, 197, 94, 0.3), rgba(22, 163, 74, 0.26));
  color: #bbf7d0;
  box-shadow: inset 0 0 0 1px rgba(34, 197, 94, 0.38);
}

.participant-info {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  min-width: 0;
}

.participant-name {
  font-size: clamp(1.05rem, 2.5vw, 1.35rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
  word-break: break-word;
}

[data-theme="dark"] .participant-name {
  color: #f1f5f9;
}

.participant-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.participant-meta .meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-full);
  background: rgba(148, 163, 184, 0.15);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.participant-meta .meta-chip i {
  color: inherit;
}

[data-theme="dark"] .participant-meta {
  color: rgba(148, 163, 184, 0.9);
}

[data-theme="dark"] .participant-meta .meta-chip {
  background: rgba(71, 85, 105, 0.35);
  color: #e2e8f0;
}

.participant-progress {
  position: relative;
  height: 8px;
  background: rgba(148, 163, 184, 0.25);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.participant-progress .progress-fill {
  position: absolute;
  inset: 0 auto 0 0;
  border-radius: inherit;
  background: linear-gradient(135deg, #34d399 0%, #10b981 60%, #14b8a6 100%);
  transition: width var(--transition-normal);
}

.participant-stats {
  display: grid;
  gap: clamp(0.9rem, 1.8vw, 1.2rem);
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.participant-stats.detail-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.participant-stats.single-column {
  grid-template-columns: minmax(0, 1fr);
}

.participant-stats .stat-item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: clamp(1rem, 2vw, 1.25rem);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(148, 163, 184, 0.28);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.98) 0%, rgba(241, 245, 249, 0.92) 100%);
  box-shadow: 0 24px 52px -36px rgba(15, 23, 42, 0.68);
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.participant-stats .stat-item::after {
  content: "";
  position: absolute;
  left: clamp(1rem, 2vw, 1.4rem);
  right: clamp(1rem, 2vw, 1.4rem);
  top: 0.4rem;
  height: 3px;
  border-radius: var(--radius-full);
  background: var(--stat-accent, rgba(99, 102, 241, 0.48));
}

.participant-stats .stat-item > * {
  position: relative;
  z-index: 1;
}

.participant-stats .stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 30px 60px -40px rgba(15, 23, 42, 0.78);
  border-color: rgba(99, 102, 241, 0.32);
}

.participant-stats .stat-item.answer-preview {
  --stat-accent: rgba(59, 130, 246, 0.55);
}

[data-theme="dark"] .participant-stats .stat-item {
  background: rgba(30, 41, 59, 0.82);
  border-color: rgba(71, 85, 105, 0.45);
  box-shadow: 0 24px 52px -38px rgba(2, 6, 23, 0.95);
}

[data-theme="dark"] .participant-stats .stat-item::after {
  background: var(--stat-accent, rgba(79, 70, 229, 0.45));
}

.stat-label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.stat-subtitle {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.participant-stats .stat-value {
  font-size: clamp(1rem, 2.4vw, 1.2rem);
  font-weight: 700;
  color: var(--text-primary);
  word-break: break-word;
}

[data-theme="dark"] .participant-stats .stat-value {
  color: #e2e8f0;
}

[data-theme="dark"] .stat-label {
  color: rgba(148, 163, 184, 0.78);
}

.qa-list {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.qa-item {
  padding: 0.85rem 0.95rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.28);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: inset 0 1px 1px rgba(148, 163, 184, 0.12);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.qa-item:hover {
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: inset 0 1px 0 rgba(59, 130, 246, 0.25);
}

[data-theme="dark"] .qa-item {
  background: rgba(30, 41, 59, 0.85);
  border-color: rgba(71, 85, 105, 0.45);
}

.qa-q {
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
}

.qa-no {
  color: var(--info-color);
}

.q-type-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-full);
  background: rgba(59, 130, 246, 0.16);
  color: #1d4ed8;
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
}

[data-theme="dark"] .q-type-pill {
  background: rgba(59, 130, 246, 0.28);
  color: #bfdbfe;
}

.qa-a {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  color: var(--text-secondary);
}

.qa-a.qa-empty {
  font-style: italic;
  color: var(--text-muted);
}

.qa-more {
  margin-top: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: var(--font-size-xs);
  font-style: italic;
  color: var(--text-muted);
}

.qa-more::before {
  content: "\f06e";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 0.75rem;
  color: inherit;
}

[data-theme="dark"] .qa-more {
  color: rgba(203, 213, 225, 0.9);
}

.ans-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  font-size: var(--font-size-xs);
  font-weight: 700;
  background: rgba(59, 130, 246, 0.16);
  color: #1d4ed8;
  box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.16);
}

.ans-chip.correct {
  background: rgba(34, 197, 94, 0.2);
  color: #166534;
  box-shadow: inset 0 0 0 1px rgba(22, 101, 52, 0.2);
}

.ans-chip.wrong {
  background: rgba(248, 113, 113, 0.22);
  color: #b91c1c;
  box-shadow: inset 0 0 0 1px rgba(185, 28, 28, 0.2);
}

.ans-chip.skipped {
  background: rgba(148, 163, 184, 0.24);
  color: #475569;
  box-shadow: inset 0 0 0 1px rgba(148, 163, 184, 0.28);
}

[data-theme="dark"] .ans-chip {
  background: rgba(59, 130, 246, 0.28);
  color: #c7d2fe;
  box-shadow: inset 0 0 0 1px rgba(99, 102, 241, 0.3);
}

[data-theme="dark"] .ans-chip.correct {
  background: rgba(34, 197, 94, 0.3);
  color: #bbf7d0;
}

[data-theme="dark"] .ans-chip.wrong {
  background: rgba(248, 113, 113, 0.3);
  color: #fecaca;
}

[data-theme="dark"] .ans-chip.skipped {
  background: rgba(148, 163, 184, 0.38);
  color: #e2e8f0;
}

.participant-actions-bar {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.participant-actions-bar .modern-btn {
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
}

.grade-form {
  display: flex;
  flex-direction: column;
  gap: clamp(0.9rem, 1.8vw, 1.2rem);
  padding: clamp(0.95rem, 2vw, 1.2rem);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(248, 250, 252, 0.92);
  box-shadow: inset 0 1px 2px rgba(148, 163, 184, 0.14);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.grade-form.compact {
  margin-top: 0.25rem;
}

[data-theme="dark"] .grade-form {
  background: rgba(30, 41, 59, 0.78);
  border-color: rgba(71, 85, 105, 0.45);
}

.grade-row {
  display: flex;
  align-items: flex-start;
  gap: clamp(1rem, 2vw, 1.35rem);
  flex-wrap: wrap;
}

.score-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 200px;
}

.score-field label {
  font-weight: 700;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

[data-theme="dark"] .score-field label {
  color: #f1f5f9;
}

.score-field .score-input {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.score-field .score-input input {
  width: 140px;
  padding: 0.6rem 0.75rem;
  border: 1px solid rgba(148, 163, 184, 0.55);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.95);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.score-field .score-input input:focus {
  border-color: rgba(59, 130, 246, 0.6);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}

.score-field .score-input .score-max {
  font-weight: 600;
  color: var(--text-muted);
}

[data-theme="dark"] .score-field .score-input input {
  background: rgba(15, 23, 42, 0.75);
  border-color: rgba(71, 85, 105, 0.5);
  color: #f8fafc;
}

[data-theme="dark"] .score-field .score-input .score-max {
  color: rgba(203, 213, 225, 0.9);
}

.grade-meta {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.grade-feedback textarea {
  width: 100%;
  min-height: 96px;
  padding: 0.7rem 0.85rem;
  border: 1px solid rgba(148, 163, 184, 0.45);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.95);
  resize: vertical;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.grade-feedback textarea:focus {
  border-color: rgba(59, 130, 246, 0.6);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}

[data-theme="dark"] .grade-feedback textarea {
  background: rgba(15, 23, 42, 0.78);
  border-color: rgba(71, 85, 105, 0.52);
  color: #e2e8f0;
}

.grade-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.rubric-card {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: clamp(1rem, 2vw, 1.2rem);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(148, 163, 184, 0.28);
  background: linear-gradient(150deg, rgba(250, 251, 255, 0.94), rgba(241, 245, 249, 0.9));
  box-shadow: 0 22px 46px -38px rgba(15, 23, 42, 0.6);
}

[data-theme="dark"] .rubric-card {
  background: rgba(30, 41, 59, 0.82);
  border-color: rgba(71, 85, 105, 0.45);
  box-shadow: 0 20px 42px -34px rgba(2, 6, 23, 0.88);
}

.rubric-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.rubric-title {
  font-weight: 700;
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.rubric-criteria {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.rubric-row {
  display: grid;
  grid-template-columns: 1fr minmax(110px, 140px);
  gap: 0.75rem;
  align-items: center;
}

.rubric-row.derived {
  grid-template-columns: 1fr;
}

.rubric-info {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.rubric-label {
  font-weight: 600;
  color: var(--text-primary);
}

.rubric-desc {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

[data-theme="dark"] .rubric-label {
  color: #f1f5f9;
}

[data-theme="dark"] .rubric-desc {
  color: rgba(148, 163, 184, 0.85);
}

.rubric-input {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid rgba(148, 163, 184, 0.45);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .rubric-input {
  background: rgba(15, 23, 42, 0.78);
  border-color: rgba(71, 85, 105, 0.52);
  color: #f8fafc;
}

.rubric-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  background: rgba(59, 130, 246, 0.16);
  color: #1d4ed8;
  font-weight: 600;
}

.rubric-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.rubric-actions .modern-btn {
  font-size: var(--font-size-xs);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-md);
}

.assignment-grading-section .modern-btn {
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  padding: 0.55rem 1rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}

.assignment-grading-section .modern-btn.primary {
  background: linear-gradient(135deg, #10b981 0%, #059669 45%, #3b82f6 100%);
  color: #ffffff;
  box-shadow: 0 10px 24px -12px rgba(14, 165, 233, 0.6);
}

.assignment-grading-section .modern-btn.secondary {
  background: rgba(241, 245, 249, 0.85);
  border-color: rgba(148, 163, 184, 0.4);
  color: var(--text-secondary);
}

.assignment-grading-section .modern-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -14px rgba(15, 118, 110, 0.6);
  filter: brightness(1.03);
}

.assignment-grading-section .modern-btn.secondary:hover {
  border-color: rgba(59, 130, 246, 0.5);
  color: var(--info-color);
}

.assignment-grading-section .modern-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.participant-card .am-badge {
  background: rgba(241, 245, 249, 0.75);
  border-color: rgba(148, 163, 184, 0.25);
}

.participant-card .am-badge i {
  color: inherit;
}

.participant-card .modern-btn.primary {
  align-self: flex-start;
}

@media (max-width: 1024px) {
  .assignment-ungraded-list {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  }

  .assignment-summary-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .assignment-grading-section {
    padding: 1rem;
  }

  .assignment-ungraded-controls {
    gap: var(--spacing-sm);
  }

  .assignment-ungraded-controls .btn-group {
    width: 100%;
    justify-content: space-between;
  }

  .assignment-ungraded-controls input[data-am-grade-search] {
    min-width: unset;
    width: 100%;
  }

  .participant-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .participant-avatar {
    width: 52px;
    height: 52px;
  }
}

@media (max-width: 540px) {
  .assignment-grading-section {
    gap: var(--spacing-md);
  }

  .assignment-ungraded-list {
    grid-template-columns: 1fr;
  }

  .participant-stats {
    grid-template-columns: 1fr;
  }

  .assignment-summary-card {
    text-align: left;
  }
}