/* ========================================
   FRIEND MANAGER COMPONENT
   Modern UI/UX Design with Enhanced Features
   ======================================== */

/* Friend Search Section */
.friends-search-section {
    position: relative;
    margin-bottom: 24px;
}

.friends-search-section .search-input-group {
    display: flex;
    gap: 8px;
    align-items: center;
    position: relative;
}

.friends-search-section .search-input-group input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid rgba(var(--border-color), 0.3);
    border-radius: 12px;
    background: rgba(var(--card-bg), 0.8);
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.friends-search-section .search-input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(var(--card-bg), 1);
    box-shadow: 
        0 0 0 3px rgba(var(--primary-color), 0.1),
        0 4px 16px rgba(0, 0, 0, 0.12);
    transform: translateY(-1px);
}

.friends-search-section .search-input-group input::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

/* Friend Search Dropdown */
.friend-search-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--card-color);
    border: 1px solid rgba(var(--border-color), 0.2);
    border-radius: 12px;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.15),
        0 0 0 1px rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    z-index: 1000;
    margin-top: 8px;
    overflow: hidden;
    animation: dropdownSlideIn 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    max-height: 400px;
    overflow-y: auto;
}

@keyframes dropdownSlideIn {
    from {
        opacity: 0;
        transform: translateY(-10px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Friend Suggest Item */
.friend-suggest-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    cursor: pointer;
    position: relative;
    border-bottom: 1px solid rgba(var(--border-color), 0.1);
}

.friend-suggest-item:last-child {
    border-bottom: none;
}

.friend-suggest-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(var(--primary-color), 0.05) 50%, 
        transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.friend-suggest-item:hover::before {
    opacity: 1;
}

.friend-suggest-item:hover {
    background: rgba(var(--primary-color), 0.05);
    transform: translateX(3px);
    box-shadow: 0 2px 12px rgba(var(--primary-color), 0.1);
}

/* Friend Avatar */
.friend-suggest-item .avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: var(--primary-color);
    flex-shrink: 0;
    border: 2px solid rgba(var(--primary-color), 0.2);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
    position: relative;
    overflow: hidden;
}

.friend-suggest-item:hover .avatar {
    transform: scale(1.05);
    border-color: var(--primary-color);
}

/* Friend Info */
.friend-suggest-item .info {
    flex: 1;
    min-width: 0;
}

.friend-suggest-item .info .name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 16px;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.friend-suggest-item .info .email {
    font-size: 13px;
    color: var(--text-secondary);
    opacity: 0.8;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Friend Actions */
.friend-suggest-item .actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
    transform: translateX(10px);
    transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.friend-suggest-item:hover .actions {
    opacity: 1;
    transform: translateX(0);
}

.friend-suggest-item .icon-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid rgba(var(--border-color), 0.3);
    background: rgba(var(--card-bg), 0.8);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    backdrop-filter: blur(10px);
    font-size: 13px;
}

.friend-suggest-item .icon-btn.act-add {
    border-color: rgba(var(--success-color), 0.3);
    color: var(--success-color);
}

.friend-suggest-item .icon-btn.act-add:hover {
    background: var(--success-color);
    color: white;
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(var(--success-color), 0.3);
}

.friend-suggest-item .icon-btn.act-chat {
    border-color: rgba(var(--primary-color), 0.3);
    color: var(--primary-color);
}

.friend-suggest-item .icon-btn.act-chat:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(var(--primary-color), 0.3);
}

/* Friend Suggest Footer */
.friend-suggest-footer {
    padding: 12px 16px;
    text-align: center;
    border-top: 1px solid rgba(var(--border-color), 0.1);
    background: rgba(var(--card-bg), 0.5);
}

.friend-suggest-footer .btn {
    padding: 8px 16px;
    font-size: 13px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

/* Friends Tabs */
.friends-tabs {
    display: flex;
    background: rgba(var(--card-bg), 0.5);
    border-radius: 12px;
    padding: 4px;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(var(--border-color), 0.1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.friends-tab {
    flex: 1;
    padding: 12px 16px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
    min-height: 44px;
}

.friends-tab::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 8px;
}

.friends-tab:hover::before {
    opacity: 0.1;
}

.friends-tab:hover {
    color: var(--text-primary);
    transform: translateY(-1px);
}

.friends-tab.active {
    color: white;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.friends-tab.active::before {
    opacity: 1;
}

.friends-tab.hidden {
    display: none;
}

.friends-tab i {
    font-size: 16px;
    position: relative;
    z-index: 1;
}

.friends-tab span {
    position: relative;
    z-index: 1;
}

/* Tab Count */
.tab-count {
    background: rgba(255, 255, 255, 0.2);
    color: inherit;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.friends-tab.active .tab-count {
    background: rgba(255, 255, 255, 0.25);
    color: white;
    border-color: rgba(255, 255, 255, 0.2);
}

/* Friends Tab Content */
.friends-tab-content {
    min-height: 300px;
}

.friends-tab-panel {
    display: none;
    animation: tabContentSlideIn 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.friends-tab-panel.active {
    display: block;
}

@keyframes tabContentSlideIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Friends List */
.friends-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* Friend Item */
.friend-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.3);
    border: 1px solid rgba(var(--border-color), 0.1);
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.friend-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(var(--primary-color), 0.08) 50%, 
        transparent 100%);
    transition: left 0.6s ease;
}

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

.friend-item:hover {
    background: rgba(var(--primary-color), 0.05);
    border-color: rgba(var(--primary-color), 0.2);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

/* Friend Avatar in List */
.friend-item .friend-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 18px;
    flex-shrink: 0;
    overflow: hidden;
    border: 2px solid rgba(var(--primary-color), 0.2);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
    position: relative;
}

.friend-item .friend-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.friend-item:hover .friend-avatar {
    transform: scale(1.05);
    border-color: var(--primary-color);
}

/* Friend Info in List */
.friend-item .friend-info {
    flex: 1;
    min-width: 0;
}

.friend-item .friend-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 16px;
    margin: 0 0 4px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.friend-item .friend-since {
    color: var(--text-secondary);
    font-size: 13px;
    opacity: 0.8;
    margin: 0;
}

/* Friend Actions in List */
.friend-item .friend-actions {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
    opacity: 0;
    transform: translateX(10px);
    transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.friend-item:hover .friend-actions {
    opacity: 1;
    transform: translateX(0);
}

.friend-item .friend-actions .btn {
    padding: 8px 12px;
    font-size: 12px;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    min-width: auto;
}

.friend-item .friend-actions .btn-outline {
    border: 1px solid rgba(var(--danger-color), 0.3);
    color: var(--danger-color);
    background: transparent;
}

.friend-item .friend-actions .btn-outline:hover {
    background: var(--danger-color);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--danger-color), 0.3);
}

/* User Search Section */
.user-search-section {
    margin-bottom: 20px;
}

.user-search-section .search-input-group {
    display: flex;
    gap: 8px;
}

.user-search-section .search-input-group input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid rgba(var(--border-color), 0.3);
    border-radius: 12px;
    background: rgba(var(--card-bg), 0.8);
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.3s ease;
}

.user-search-section .search-input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(var(--card-bg), 1);
    box-shadow: 0 0 0 3px rgba(var(--primary-color), 0.1);
}

/* Search Results */
.search-results {
    max-height: 400px;
    overflow-y: auto;
    border-radius: 8px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.4;
    color: var(--text-muted);
}

.empty-state p {
    margin: 0;
    font-size: 14px;
    opacity: 0.8;
    line-height: 1.5;
}

/* Responsive Design */
@media (max-width: 768px) {
    .friends-search-section .search-input-group {
        flex-direction: column;
        gap: 12px;
    }
    
    .friends-tabs {
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    .friends-tabs {
        overflow-x: auto;
        scrollbar-width: none;
        display: flex;
        flex-direction: row-reverse;
        flex-wrap: wrap;
        align-content: stretch;
        justify-content: center;
        align-items: flex-end;
    }
    
    .friends-tabs::-webkit-scrollbar {
        display: none;
    }
    
    .friends-tab {
        min-width: 100px;
        padding: 10px 12px;
    }
    
    .friends-tab span:not(.tab-count) {
        display: none;
    }
    
    .friends-tab i {
        margin-bottom: 0;
    }
    
    .friend-suggest-item {
        padding: 12px;
    }
    
    .friend-suggest-item .avatar {
        width: 40px;
        height: 40px;
    }
    
    .friend-suggest-item .info .name {
        font-size: 14px;
    }
    
    .friend-suggest-item .info .email {
        font-size: 12px;
    }
    
    .friend-item {
        padding: 12px;
    }
    
    .friend-item .friend-avatar {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .friend-item .friend-actions {
        flex-direction: column;
        gap: 4px;
    }
    
    .friend-item .friend-actions .btn {
        padding: 6px 10px;
        font-size: 11px;
    }
}

@media (max-width: 480px) {
    .friends-search-section {
        margin-bottom: 16px;
    }

    
    .friends-tab {
        padding: 8px 10px;
        min-height: 40px;
    }
    
    .friend-search-dropdown {
        margin-top: 4px;
        border-radius: 8px;
    }
    
    .friend-suggest-item {
        padding: 10px;
    }
    
    .friend-item {
        padding: 10px;
    }
    
    .user-search-section .search-input-group {
        flex-direction: column;
    }
    
    .empty-state {
        padding: 30px 15px;
    }
    
    .empty-state i {
        font-size: 36px;
        margin-bottom: 12px;
    }
}

/* Scrollbar Styling */
.friend-search-dropdown::-webkit-scrollbar,
.search-results::-webkit-scrollbar {
    width: 6px;
}

.friend-search-dropdown::-webkit-scrollbar-track,
.search-results::-webkit-scrollbar-track {
    background: rgba(var(--text-muted), 0.1);
    border-radius: 3px;
}

.friend-search-dropdown::-webkit-scrollbar-thumb,
.search-results::-webkit-scrollbar-thumb {
    background: rgba(var(--text-muted), 0.3);
    border-radius: 3px;
}

.friend-search-dropdown::-webkit-scrollbar-thumb:hover,
.search-results::-webkit-scrollbar-thumb:hover {
    background: rgba(var(--text-muted), 0.5);
}

/* Enhanced Button Styles */
.friends-search-section .btn,
.user-search-section .btn {
    position: relative;
    overflow: hidden;
}

.friends-search-section .btn::before,
.user-search-section .btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.2) 50%, 
        transparent 100%);
    transition: left 0.5s ease;
}

.friends-search-section .btn:hover::before,
.user-search-section .btn:hover::before {
    left: 100%;
}

/* Loading State */
.friend-search-dropdown.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.friend-search-dropdown.loading::after {
    content: '';
    width: 24px;
    height: 24px;
    border: 2px solid rgba(var(--primary-color), 0.2);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

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

/* Focus Styles for Accessibility */
.friends-tab:focus,
.friend-suggest-item:focus,
.friend-item:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Dark Theme Adjustments */
[data-theme-mode="dark"] .friend-search-dropdown {
    background: rgba(0, 0, 0, 0.9);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme-mode="dark"] .friend-suggest-item:hover {
    background: rgba(var(--primary-color), 0.1);
}

[data-theme-mode="dark"] .friend-item:hover {
    background: rgba(var(--primary-color), 0.08);
}