/* GGUF Model Discovery - Enhanced UI Styles */

/* CSS Variables for consistent theming */
:root {
    --primary-color: #3B82F6;
    --secondary-color: #6B7280;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --error-color: #EF4444;
    --background-color: #F9FAFB;
    --card-background: #FFFFFF;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --border-color: #E5E7EB;
    --border-radius: 8px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --transition: all 0.2s ease-in-out;
}

/* Reset and base styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Layout containers */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.main-content {
    min-height: 100vh;
    padding: 2rem 0;
}

/* Header styles */
.header {
    background: var(--card-background);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

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

.header-stats {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

/* Logo integration styles */
.header-logo-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-logo {
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
    border-radius: var(--border-radius);
    padding: 0.25rem;
    text-decoration: none;
}

.header-logo:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.logo-image {
    height: 40px;
    width: auto;
    max-width: 200px;
    display: block;
}

.logo-fallback {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: var(--border-radius);
    color: white;
}

.logo-icon {
    width: 24px;
    height: 24px;
}

.header-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-item {
    display: inline-flex;
    align-items: center;
    font-weight: 500;
    color: var(--text-primary);
    cursor: help;
    transition: color 0.2s ease;
}

.stat-item:hover {
    color: var(--primary-color);
}

.freshness-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.freshness-fresh {
    background-color: #DCFCE7;
    color: #166534;
}

.freshness-recent {
    background-color: #FEF3C7;
    color: #92400E;
}

.freshness-stale {
    background-color: #FEE2E2;
    color: #991B1B;
}

/* Search and filter section */
.search-filter-section {
    background: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.search-container {
    margin-bottom: 1.5rem;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.filters-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.filter-select {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--card-background);
    font-size: 0.875rem;
    transition: var(--transition);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Visual indicator for engagement-based sorting */
.filter-select.engagement-sort {
    border-color: #e91e63;
    background-color: rgba(233, 30, 99, 0.05);
}

.filter-select.engagement-sort:focus {
    border-color: #e91e63;
    box-shadow: 0 0 0 3px rgba(233, 30, 99, 0.1);
}

/* Model grid */
.model-grid {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 2rem;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* Responsive grid classes for ModelGrid component */
.model-grid.grid-cols-1 {
    grid-template-columns: 1fr;
}

.model-grid.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.model-grid.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.model-grid.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

.model-grid.grid-cols-5 {
    grid-template-columns: repeat(5, 1fr);
}

/* Grid item styles */
.model-grid-item {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

/* Empty and error states */
.empty-state,
.error-state {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.col-span-full {
    grid-column: 1 / -1;
}

/* Model card */
.model-card {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

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

.model-card:focus-within {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.model-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.model-number {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    font-weight: 600;
}

.download-count {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Model metrics container */
.model-metrics {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Engagement metrics styles */
.engagement-count {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.engagement-icon {
    font-size: 0.875rem;
    line-height: 1;
}

.engagement-number {
    font-weight: 500;
}

/* Engagement level styling */
.engagement-low {
    color: var(--text-secondary);
}

.engagement-medium {
    color: #F59E0B;
}

.engagement-high {
    color: #EF4444;
}

.engagement-viral {
    color: #DC2626;
    font-weight: 600;
}

/* Engagement highlighting for popular models */
.engagement-highlight {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(220, 38, 38, 0.05));
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.engagement-highlight .engagement-icon {
    animation: heartbeat 2s ease-in-out infinite;
}

/* Engagement badges */
.engagement-badge {
    font-size: 0.625rem;
    font-weight: 600;
    padding: 0.125rem 0.375rem;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    margin-left: 0.5rem;
}

.engagement-badge.engagement-high {
    background: rgba(239, 68, 68, 0.1);
    color: #DC2626;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.engagement-badge.engagement-viral {
    background: linear-gradient(135deg, #DC2626, #EF4444);
    color: white;
    box-shadow: 0 2px 4px rgba(220, 38, 38, 0.3);
}

/* Heartbeat animation for high engagement */
@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

.model-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.model-details {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.5rem 1rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

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

.detail-value {
    color: var(--text-primary);
}

.quantization-badge {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    font-weight: 600;
    margin-right: 0.5rem;
}

.model-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
}

.btn-group {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    position: relative;
}

.btn-group .btn {
    flex: 1;
}

.btn-group .copy-button {
    flex-shrink: 0;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--card-background);
    opacity: 0.7;
    transition: all 0.2s ease;
}

.btn-group:hover .copy-button,
.btn-group:focus-within .copy-button {
    opacity: 1;
    border-color: var(--primary-color);
}

.model-name-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    gap: 0.5rem;
}

.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
}

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

.btn-primary:hover {
    background: #2563EB;
}

.btn-secondary {
    background: var(--card-background);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--background-color);
}

.btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

.btn.downloading {
    opacity: 0.8;
    transform: scale(0.98);
}

/* Download button icons */
.btn svg {
    flex-shrink: 0;
}

/* Model card specific enhancements */
.model-name {
    cursor: pointer;
    user-select: none;
}

.model-name:hover {
    color: var(--primary-color);
}

.download-count svg {
    opacity: 0.7;
}

/* Responsive model card adjustments */
@media (max-width: 768px) {
    .model-card {
        padding: 1rem;
    }
    
    .model-card-header {
        margin-bottom: 0.75rem;
    }
    
    .model-metrics {
        gap: 0.5rem;
        flex-wrap: wrap;
    }
    
    .engagement-count {
        font-size: 0.7rem;
        min-height: 32px; /* Touch-friendly */
        padding: 0.25rem 0.375rem;
        border-radius: 6px;
    }
    
    .engagement-badge {
        font-size: 0.6rem;
        padding: 0.1rem 0.3rem;
        margin-left: 0.25rem;
        min-height: 24px;
        display: inline-flex;
        align-items: center;
    }
    
    .model-name {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }
    
    .model-details {
        font-size: 0.8rem;
        gap: 0.25rem 0.75rem;
    }
    
    .model-actions {
        gap: 0.25rem;
    }
    
    .btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
        min-height: 44px; /* Touch-friendly */
    }
}

@media (max-width: 480px) {
    .model-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
        min-height: 48px; /* Larger touch target for small screens */
    }
    
    /* Stack engagement metrics vertically on very small screens */
    .model-metrics {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.375rem;
    }
    
    .engagement-count {
        font-size: 0.65rem;
        min-height: 36px;
        padding: 0.375rem 0.5rem;
        width: 100%;
        justify-content: flex-start;
    }
    
    .engagement-badge {
        font-size: 0.55rem;
        padding: 0.125rem 0.25rem;
        margin-left: 0.125rem;
        min-height: 20px;
    }
    
    .download-count {
        width: 100%;
        justify-content: flex-start;
        min-height: 36px;
        padding: 0.375rem 0.5rem;
        border-radius: 6px;
    }
}

/* Pagination Component Styles */
.pagination-container {
    margin: 2rem 0;
}

.pagination-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.pagination-info {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.pagination-nav {
    display: flex;
    justify-content: center;
}

.pagination-list {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.pagination-item {
    display: flex;
}

.pagination-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.5rem;
    height: 2.5rem;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    background: var(--card-background);
    color: var(--text-primary);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    user-select: none;
}

.pagination-button:hover:not(.pagination-button-disabled) {
    background: var(--background-color);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.pagination-button:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    z-index: 1;
}

.pagination-button-current {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    font-weight: 600;
}

.pagination-button-current:hover {
    background: #2563EB;
    border-color: #2563EB;
    color: white;
    transform: none;
}

.pagination-button-disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.pagination-prev,
.pagination-next {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.pagination-ellipsis {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.5rem;
    height: 2.5rem;
    padding: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.pagination-focused {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: var(--border-radius);
}

.pagination-error {
    text-align: center;
    padding: 1rem;
    color: var(--error-color);
    font-size: 0.875rem;
}

/* Responsive pagination */
@media (max-width: 768px) {
    .pagination-wrapper {
        gap: 0.75rem;
    }
    
    .pagination-list {
        gap: 0.125rem;
    }
    
    .pagination-button {
        min-width: 2.25rem;
        height: 2.25rem;
        padding: 0.375rem 0.5rem;
        font-size: 0.8rem;
    }
    
    .pagination-prev span:not(.sr-only),
    .pagination-next span:not(.sr-only) {
        display: none;
    }
    
    .pagination-info {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .pagination-list {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.25rem;
    }
    
    .pagination-button {
        min-width: 2rem;
        height: 2rem;
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
    }
}

/* High contrast mode support for pagination */
@media (prefers-contrast: high) {
    .pagination-button {
        border-width: 2px;
    }
    
    .pagination-button-current {
        border-width: 3px;
    }
}

/* Reduced motion support for pagination */
@media (prefers-reduced-motion: reduce) {
    .pagination-button {
        transition: none;
    }
    
    .pagination-button:hover:not(.pagination-button-disabled) {
        transform: none;
    }
}

/* Enhanced Loading States and Animations */
.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    text-align: center;
    animation: fadeIn 0.3s ease-in-out;
}

.loading-spinner {
    width: 2rem;
    height: 2rem;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

.loading-message {
    color: var(--text-secondary);
    font-size: 0.875rem;
    animation: pulse 2s ease-in-out infinite;
}

/* Enhanced Animation Keyframes */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

@keyframes shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translate3d(0, 0, 0);
    }
    40%, 43% {
        transform: translate3d(0, -8px, 0);
    }
    70% {
        transform: translate3d(0, -4px, 0);
    }
    90% {
        transform: translate3d(0, -2px, 0);
    }
}

/* Loading Skeleton Animation */
.loading-skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--border-radius);
}

/* Smooth Transitions for All Interactive Elements */
.btn,
.model-card,
.pagination-button,
.search-input,
.filter-select {
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Enhanced Button Animations */
.btn {
    position: relative;
    overflow: hidden;
}

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

.btn:hover::before {
    left: 100%;
}

.btn:active {
    transform: scale(0.98);
}

/* Enhanced Model Card Animations */
.model-card {
    animation: slideUp 0.3s ease-out;
    animation-fill-mode: both;
}

.model-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.model-card:active {
    transform: translateY(-2px) scale(1.01);
}

/* Staggered Animation for Model Grid */
.model-grid-item:nth-child(1) { animation-delay: 0.05s; }
.model-grid-item:nth-child(2) { animation-delay: 0.1s; }
.model-grid-item:nth-child(3) { animation-delay: 0.15s; }
.model-grid-item:nth-child(4) { animation-delay: 0.2s; }
.model-grid-item:nth-child(5) { animation-delay: 0.25s; }
.model-grid-item:nth-child(6) { animation-delay: 0.3s; }
.model-grid-item:nth-child(7) { animation-delay: 0.35s; }
.model-grid-item:nth-child(8) { animation-delay: 0.4s; }
.model-grid-item:nth-child(9) { animation-delay: 0.45s; }
.model-grid-item:nth-child(10) { animation-delay: 0.5s; }

/* Enhanced Pagination Animations */
.pagination-button {
    transition: all 0.2s ease;
}

.pagination-button:hover:not(.pagination-button-disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.12);
}

.pagination-button:active {
    transform: translateY(0);
}

/* Enhanced Search Input Animations */
.search-input:focus {
    transform: scale(1.02);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1), 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Filter Select Animations */
.filter-select:focus {
    transform: scale(1.01);
}

/* Success/Error State Animations */
.success-message {
    animation: slideDown 0.3s ease-out, fadeIn 0.3s ease-out;
    background: var(--success-color);
    color: white;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.error-message {
    animation: bounce 0.6s ease-out;
    background: var(--error-color);
    color: white;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

/* Copy to Clipboard Animation */
.copy-success {
    animation: bounce 0.6s ease-out;
    color: var(--success-color) !important;
}

/* Loading State for Buttons */
.btn.loading {
    position: relative;
    color: transparent;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    color: inherit;
}

/* Enhanced Responsive Design and Mobile Experience */

/* Touch-friendly interactive elements for mobile devices */
@media (hover: none) and (pointer: coarse) {
    /* Ensure all interactive elements meet minimum touch target size (44px) */
    .btn,
    .search-input,
    .filter-select,
    .pagination-button,
    .model-card,
    button,
    input[type="button"],
    input[type="submit"],
    select {
        min-height: 44px;
        min-width: 44px;
        touch-action: manipulation; /* Prevents double-tap zoom */
    }
    
    /* Increase touch targets for small elements */
    .model-number,
    .quantization-badge,
    .freshness-indicator {
        min-height: 32px;
        min-width: 32px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
    
    /* Enhanced hover states for touch devices */
    .model-card:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }
    
    .btn:active {
        transform: scale(0.95);
        transition: transform 0.1s ease;
    }
}

/* Mobile-first responsive breakpoints */
/* Small mobile devices (320px - 479px) */
@media (max-width: 479px) {
    .container {
        padding: 0 0.75rem;
    }
    
    /* Header optimizations */
    .header-content {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .header-title {
        font-size: 1.25rem;
        text-align: center;
    }
    
    .header-stats {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
        text-align: center;
    }
    
    /* Search and filter optimizations */
    .search-filter-section {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .search-input {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 0.875rem 1rem;
    }
    
    .filters-container {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .filter-select {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 0.75rem 0.5rem;
    }
    
    /* Model grid optimizations */
    .model-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .model-card {
        padding: 1rem;
    }
    
    .model-card-header {
        margin-bottom: 0.75rem;
    }
    
    .model-name {
        font-size: 1rem;
        line-height: 1.3;
        margin-bottom: 0.5rem;
    }
    
    .model-details {
        font-size: 0.8rem;
        gap: 0.25rem 0.75rem;
        margin-bottom: 0.75rem;
    }
    
    .model-actions {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }
    
    /* Pagination optimizations */
    .pagination-wrapper {
        gap: 0.5rem;
    }
    
    .pagination-list {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.25rem;
    }
    
    .pagination-button {
        min-width: 44px;
        height: 44px;
        padding: 0.5rem;
        font-size: 0.875rem;
    }
    
    .pagination-info {
        font-size: 0.8rem;
        text-align: center;
    }
}

/* Large mobile devices (480px - 767px) */
@media (min-width: 480px) and (max-width: 767px) {
    .container {
        padding: 0 1rem;
    }
    
    /* Header optimizations */
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .header-stats {
        flex-wrap: wrap;
        gap: 0.75rem;
    }
    
    /* Search and filter optimizations */
    .search-filter-section {
        padding: 1.25rem;
    }
    
    .filters-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    /* Model grid optimizations */
    .model-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .model-card {
        padding: 1.25rem;
    }
    
    .model-actions {
        flex-direction: row;
        gap: 0.5rem;
    }
    
    .btn {
        flex: 1;
        padding: 0.625rem 0.875rem;
    }
    
    /* Pagination optimizations */
    .pagination-button {
        min-width: 40px;
        height: 40px;
        font-size: 0.875rem;
    }
}

/* Tablet devices (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
    .container {
        padding: 0 1.5rem;
    }
    
    /* Header optimizations */
    .header-content {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    /* Search and filter optimizations */
    .filters-container {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }
    
    /* Model grid optimizations */
    .model-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.25rem;
    }
    
    .model-actions {
        flex-direction: row;
        gap: 0.5rem;
    }
    
    .btn {
        flex: 1;
    }
}

/* Desktop devices (1024px+) */
@media (min-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
    
    /* Model grid optimizations */
    .model-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
    }
}

/* Large desktop devices (1200px+) */
@media (min-width: 1200px) {
    .model-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (max-width: 480px) {
    .model-card {
        padding: 1rem;
    }
    
    .model-details {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }
    
    .detail-label {
        font-weight: 600;
    }
}

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

.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;
}

/* Enhanced Focus and Keyboard Navigation Styles */
.btn:focus,
.search-input:focus,
.filter-select:focus,
.pagination-button:focus,
.model-card:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: var(--border-radius);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

/* Enhanced Focus Visible for Better Accessibility */
.btn:focus-visible,
.search-input:focus-visible,
.filter-select:focus-visible,
.pagination-button:focus-visible,
.model-card:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    box-shadow: 0 0 0 6px rgba(59, 130, 246, 0.15);
    animation: focusPulse 0.3s ease-out;
}

@keyframes focusPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(59, 130, 246, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(59, 130, 246, 0);
    }
}

/* Keyboard Navigation Indicators */
.keyboard-nav-active .model-card:focus {
    transform: translateY(-2px) scale(1.02);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2), 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.keyboard-nav-active .pagination-button:focus {
    background: var(--primary-color);
    color: white;
    transform: translateY(-1px);
}

/* Skip Links for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: white;
    padding: 8px 12px;
    text-decoration: none;
    border-radius: var(--border-radius);
    z-index: 1000;
    font-weight: 500;
    transition: all 0.2s ease;
}

.skip-link:focus {
    top: 6px;
    animation: slideDown 0.3s ease-out;
}

/* Enhanced Visual Hierarchy */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 0.5em;
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

/* Enhanced Typography Scale */
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }

/* Enhanced Color Hierarchy */
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: #9CA3AF; }
.text-success { color: var(--success-color); }
.text-warning { color: var(--warning-color); }
.text-error { color: var(--error-color); }

/* Enhanced Spacing Scale */
.space-y-1 > * + * { margin-top: 0.25rem; }
.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-3 > * + * { margin-top: 0.75rem; }
.space-y-4 > * + * { margin-top: 1rem; }
.space-y-6 > * + * { margin-top: 1.5rem; }
.space-y-8 > * + * { margin-top: 2rem; }

/* Enhanced Shadow Scale */
.shadow-xs { box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.05); }
.shadow-sm { box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05); }
.shadow { box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06); }
.shadow-md { box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06); }
.shadow-lg { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05); }
.shadow-xl { box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04); }

/* Engagement Metrics Styles */
.engagement-metric {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.engagement-metric .engagement-icon {
    font-size: 0.875rem;
    line-height: 1;
}

.engagement-metric .engagement-count {
    font-weight: 500;
}

/* Engagement level styling */
.engagement-low {
    color: var(--text-secondary);
}

.engagement-medium {
    color: #F59E0B;
}

.engagement-high {
    color: #EF4444;
}

.engagement-viral {
    color: #EF4444;
    font-weight: 600;
    animation: pulse 2s ease-in-out infinite;
}

/* Engagement badges */
.engagement-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.375rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.engagement-badge.badge-liked {
    background-color: #FEF3C7;
    color: #92400E;
}

.engagement-badge.badge-trending {
    background-color: #FECACA;
    color: #991B1B;
}

.engagement-badge.badge-popular {
    background-color: #DBEAFE;
    color: #1E40AF;
    animation: shimmer 2s ease-in-out infinite;
}

/* Model card engagement section */
.model-engagement {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.model-engagement .engagement-metric {
    font-size: 0.8rem;
}

.model-engagement .engagement-metric:hover {
    color: var(--primary-color);
    transform: scale(1.05);
}

/* Engagement metric in model details */
.model-details .engagement-metric {
    grid-column: span 2;
    justify-self: start;
    font-size: 0.875rem;
    padding: 0.25rem 0;
}

/* Engagement highlighting for high-engagement models */
.model-card.high-engagement {
    border-color: #FCA5A5;
    background: linear-gradient(135deg, #FFFFFF 0%, #FEF2F2 100%);
}

.model-card.high-engagement:hover {
    border-color: #EF4444;
    box-shadow: 0 10px 15px -3px rgba(239, 68, 68, 0.1), 0 4px 6px -2px rgba(239, 68, 68, 0.05);
}

/* Engagement tooltip */
.engagement-tooltip {
    position: relative;
}

.engagement-tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-primary);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 10;
    margin-bottom: 0.25rem;
}

.engagement-tooltip::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: var(--text-primary);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 10;
}

.engagement-tooltip:hover::after,
.engagement-tooltip:hover::before {
    opacity: 1;
}

/* Responsive engagement metrics */
@media (max-width: 768px) {
    .model-engagement {
        gap: 0.5rem;
        margin-bottom: 0.75rem;
    }
    
    .model-engagement .engagement-metric {
        font-size: 0.75rem;
    }
    
    .engagement-badge {
        font-size: 0.625rem;
        padding: 0.125rem 0.25rem;
    }
    
    .model-details .engagement-metric {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .model-engagement {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .engagement-metric .engagement-icon {
        font-size: 0.75rem;
    }
}

/* Accessibility improvements for engagement metrics */
.engagement-metric[role="button"] {
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.engagement-metric[role="button"]:hover {
    background: rgba(59, 130, 246, 0.1);
}

.engagement-metric[role="button"]:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .engagement-metric {
        border: 1px solid currentColor;
        padding: 0.125rem 0.25rem;
        border-radius: var(--border-radius);
    }
    
    .engagement-badge {
        border: 2px solid currentColor;
    }
}

/* Copy to Clipboard Styles */
.copy-button {
    position: relative;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
    opacity: 0;
}

.copy-button:hover {
    color: var(--primary-color);
    background: rgba(59, 130, 246, 0.1);
}

.copy-button:focus {
    opacity: 1;
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.model-card:hover .copy-button,
.model-card:focus-within .copy-button {
    opacity: 1;
}

.copy-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-primary);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 10;
}

.copy-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: var(--text-primary);
}

.copy-button:hover .copy-tooltip,
.copy-button:focus .copy-tooltip {
    opacity: 1;
}

/* Mobile-specific interaction patterns */
.mobile-swipe-indicator {
    display: none;
}

@media (max-width: 767px) {
    /* Mobile swipe indicators for horizontal scrolling areas */
    .mobile-swipe-indicator {
        display: block;
        text-align: center;
        font-size: 0.75rem;
        color: var(--text-secondary);
        padding: 0.5rem;
        background: var(--background-color);
        border-radius: var(--border-radius);
        margin: 0.5rem 0;
    }
    
    /* Enhanced visual feedback for mobile interactions */
    .model-card:active,
    .btn:active,
    .pagination-button:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }
    
    /* Mobile-friendly dropdown styling */
    .filter-select {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
        background-position: right 0.5rem center;
        background-repeat: no-repeat;
        background-size: 1.5em 1.5em;
        padding-right: 2.5rem;
        appearance: none;
    }
    
    /* Mobile navigation enhancements */
    .mobile-nav-toggle {
        display: block;
        background: none;
        border: none;
        padding: 0.5rem;
        cursor: pointer;
        border-radius: var(--border-radius);
    }
    
    .mobile-nav-toggle:focus {
        outline: 2px solid var(--primary-color);
        outline-offset: 2px;
    }
    
    /* Sticky mobile header */
    .header {
        position: sticky;
        top: 0;
        z-index: 100;
        backdrop-filter: blur(10px);
        background: rgba(255, 255, 255, 0.95);
    }
    
    /* Mobile-optimized search */
    .search-container {
        position: relative;
    }
    
    .search-input:focus {
        transform: scale(1.02);
        transition: transform 0.2s ease;
    }
    
    /* Mobile pagination improvements */
    .pagination-list {
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
        padding: 0.5rem 0;
    }
    
    .pagination-list::-webkit-scrollbar {
        display: none;
    }
    
    /* Mobile filter panel */
    .mobile-filter-toggle {
        display: block;
        width: 100%;
        padding: 0.75rem;
        background: var(--primary-color);
        color: white;
        border: none;
        border-radius: var(--border-radius);
        font-weight: 500;
        margin-bottom: 1rem;
        cursor: pointer;
    }
    
    .mobile-filter-toggle:active {
        background: #2563EB;
    }
    
    .filters-container.mobile-hidden {
        display: none;
    }
    
    .filters-container.mobile-visible {
        display: grid;
        animation: slideDown 0.3s ease-out;
    }
    
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    /* Touch active states for mobile feedback */
    .touch-active {
        transform: scale(0.98) !important;
        opacity: 0.8;
        transition: transform 0.1s ease, opacity 0.1s ease;
    }
    
    .pagination-button.touch-active {
        background-color: var(--primary-color);
        color: white;
    }
    
    .btn.touch-active {
        background-color: #2563EB;
    }
    
    .filter-select.touch-active {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    }
    
    .search-input:focus {
        transform: scale(1.02);
        transition: transform 0.2s ease;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-secondary: #000000;
    }
    
    .model-card {
        border-width: 2px;
    }
}

/* Animation utility classes */
.animate-slideUp {
    animation: slideUp 0.3s ease-out;
}

.animate-fadeIn {
    animation: fadeIn 0.3s ease-in-out;
}

.animate-bounce {
    animation: bounce 0.6s ease-out;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Loading progress bar */
.loading-progress {
    transition: width 0.3s ease-out;
}

/* Keyboard shortcut modal styles */
kbd {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
    background-color: #f3f4f6;
    border: 1px solid #d1d5db;
    border-radius: 0.25rem;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

/* Enhanced button group styles */
.btn-group {
    border-radius: var(--border-radius);
    overflow: hidden;
}

.btn-group .btn {
    border-radius: 0;
    border-right: none;
}

.btn-group .btn:first-child {
    border-top-left-radius: var(--border-radius);
    border-bottom-left-radius: var(--border-radius);
}

.btn-group .copy-button {
    border-top-right-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
    border-left: 1px solid rgba(255, 255, 255, 0.2);
}

/* Enhanced model card layout */
.model-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.model-actions {
    margin-top: auto;
}

/* Improved accessibility for screen readers */
.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;
}

/* Focus trap for modals */
.modal-focus-trap {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
}

/* Enhanced loading states */
.loading-skeleton-text {
    height: 1rem;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

.loading-skeleton-text.w-full { width: 100%; }
.loading-skeleton-text.w-3-4 { width: 75%; }
.loading-skeleton-text.w-1-2 { width: 50%; }
.loading-skeleton-text.w-1-4 { width: 25%; }

/* Print styles for better printing */
@media print {
    .no-print,
    .copy-button,
    .pagination-container,
    #keyboard-shortcuts-modal {
        display: none !important;
    }
    
    .model-card {
        break-inside: avoid;
        border: 1px solid #000;
        margin-bottom: 1rem;
    }
    
    .btn {
        border: 1px solid #000;
        background: white !important;
        color: black !important;
    }
}/* Model 
Grid Styles */
.model-grid {
    display: grid;
    gap: 1.5rem;
    width: 100%;
}

/* Grid responsive classes (fallback if Tailwind doesn't load) */
.grid-cols-1 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-cols-5 {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

/* Model grid item styles */
.model-grid-item {
    transition: var(--transition);
}

.model-grid-item:hover {
    transform: translateY(-2px);
}

/* Touch-specific optimizations */
.touch-optimized .model-grid-item {
    transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.touch-optimized .model-grid-item.touch-active {
    transform: scale(0.98);
    box-shadow: var(--shadow-sm);
}

.mobile-optimized {
    padding: 0.5rem 0;
}

.mobile-optimized .model-grid-item {
    margin-bottom: 0.5rem;
}

/* Grid responsive behavior */
.grid-responsive {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

@media (max-width: 640px) {
    .grid-responsive {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 641px) and (max-width: 1024px) {
    .grid-responsive {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1025px) and (max-width: 1440px) {
    .grid-responsive {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1441px) {
    .grid-responsive {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Empty state styles */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem 1rem;
}

.error-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem 1rem;
}

/* Loading states */
.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.loading-message {
    margin-top: 1rem;
    color: var(--text-secondary);
}/
* Enhanced Responsive Design and Mobile Experience */

/* Touch-friendly interactive elements for mobile devices */
@media (hover: none) and (pointer: coarse) {
    /* Ensure all interactive elements meet minimum touch target size (44px) */
    .btn,
    .search-input,
    .filter-select,
    .pagination-button,
    .model-card,
    button,
    input[type="button"],
    input[type="submit"],
    select {
        min-height: 44px;
        min-width: 44px;
        touch-action: manipulation; /* Prevents double-tap zoom */
    }
    
    /* Increase touch targets for small elements */
    .model-number,
    .quantization-badge,
    .freshness-indicator {
        min-height: 32px;
        min-width: 32px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
    
    /* Enhanced hover states for touch devices */
    .model-card:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }
    
    .btn:active {
        transform: scale(0.95);
        transition: transform 0.1s ease;
    }
}

/* Mobile-first responsive breakpoints */
/* Small mobile devices (320px - 479px) */
@media (max-width: 479px) {
    .container {
        padding: 0 0.75rem;
    }
    
    /* Header optimizations */
    .header-content {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .header-title {
        font-size: 1.25rem;
        text-align: center;
    }
    
    .header-stats {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
        text-align: center;
    }
    
    /* Search and filter optimizations */
    .search-filter-section {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .search-input {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 0.875rem 1rem;
    }
    
    .filters-container {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .filter-select {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 0.75rem 0.5rem;
    }
    
    /* Model grid optimizations */
    .model-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .model-card {
        padding: 1rem;
    }
    
    .model-card-header {
        margin-bottom: 0.75rem;
    }
    
    .model-name {
        font-size: 1rem;
        line-height: 1.3;
        margin-bottom: 0.5rem;
    }
    
    .model-details {
        font-size: 0.8rem;
        gap: 0.25rem 0.75rem;
        margin-bottom: 0.75rem;
    }
    
    .model-actions {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }
    
    /* Pagination optimizations */
    .pagination-wrapper {
        gap: 0.5rem;
    }
    
    .pagination-list {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.25rem;
    }
    
    .pagination-button {
        min-width: 44px;
        height: 44px;
        padding: 0.5rem;
        font-size: 0.875rem;
    }
    
    .pagination-info {
        font-size: 0.8rem;
        text-align: center;
    }
}

/* Large mobile devices (480px - 767px) */
@media (min-width: 480px) and (max-width: 767px) {
    .container {
        padding: 0 1rem;
    }
    
    /* Header optimizations */
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .header-stats {
        flex-wrap: wrap;
        gap: 0.75rem;
    }
    
    /* Search and filter optimizations */
    .search-filter-section {
        padding: 1.25rem;
    }
    
    .filters-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    /* Model grid optimizations */
    .model-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .model-card {
        padding: 1.25rem;
    }
    
    .model-actions {
        flex-direction: row;
        gap: 0.5rem;
    }
    
    .btn {
        flex: 1;
        padding: 0.625rem 0.875rem;
    }
    
    /* Pagination optimizations */
    .pagination-button {
        min-width: 40px;
        height: 40px;
        font-size: 0.875rem;
    }
}

/* Tablet devices (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
    .container {
        padding: 0 1.5rem;
    }
    
    /* Header optimizations */
    .header-content {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    /* Search and filter optimizations */
    .filters-container {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }
    
    /* Model grid optimizations */
    .model-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.25rem;
    }
    
    .model-actions {
        flex-direction: row;
        gap: 0.5rem;
    }
    
    .btn {
        flex: 1;
    }
}

/* Desktop devices (1024px+) */
@media (min-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
    
    /* Model grid optimizations */
    .model-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
    }
}

/* Large desktop devices (1200px+) */
@media (min-width: 1200px) {
    .model-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

/* Mobile-specific interaction patterns */
@media (max-width: 767px) {
    /* Mobile swipe indicators for horizontal scrolling areas */
    .mobile-swipe-indicator {
        display: block;
        text-align: center;
        font-size: 0.75rem;
        color: var(--text-secondary);
        padding: 0.5rem;
        background: var(--background-color);
        border-radius: var(--border-radius);
        margin: 0.5rem 0;
    }
    
    /* Enhanced visual feedback for mobile interactions */
    .model-card:active,
    .btn:active,
    .pagination-button:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }
    
    /* Mobile-friendly dropdown styling */
    .filter-select {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
        background-position: right 0.5rem center;
        background-repeat: no-repeat;
        background-size: 1.5em 1.5em;
        padding-right: 2.5rem;
        appearance: none;
    }
    
    /* Mobile navigation enhancements */
    .mobile-nav-toggle {
        display: block;
        background: none;
        border: none;
        padding: 0.5rem;
        cursor: pointer;
        border-radius: var(--border-radius);
    }
    
    .mobile-nav-toggle:focus {
        outline: 2px solid var(--primary-color);
        outline-offset: 2px;
    }
    
    /* Sticky mobile header */
    .header {
        position: sticky;
        top: 0;
        z-index: 100;
        backdrop-filter: blur(10px);
        background: rgba(255, 255, 255, 0.95);
    }
    
    /* Mobile-optimized search */
    .search-container {
        position: relative;
    }
    
    .search-input:focus {
        transform: scale(1.02);
        transition: transform 0.2s ease;
    }
    
    /* Mobile pagination improvements */
    .pagination-list {
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
        padding: 0.5rem 0;
    }
    
    .pagination-list::-webkit-scrollbar {
        display: none;
    }
    
    /* Mobile filter panel */
    .mobile-filter-toggle {
        display: block;
        width: 100%;
        padding: 0.75rem;
        background: var(--primary-color);
        color: white;
        border: none;
        border-radius: var(--border-radius);
        font-weight: 500;
        margin-bottom: 1rem;
        cursor: pointer;
    }
    
    .mobile-filter-toggle:active {
        background: #2563EB;
    }
    
    .filters-container.mobile-hidden {
        display: none;
    }
    
    .filters-container.mobile-visible {
        display: grid;
        animation: slideDown 0.3s ease-out;
    }
    
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    /* Touch active states for mobile feedback */
    .touch-active {
        transform: scale(0.98) !important;
        opacity: 0.8;
        transition: transform 0.1s ease, opacity 0.1s ease;
    }
    
    .pagination-button.touch-active {
        background-color: var(--primary-color);
        color: white;
    }
    
    .btn.touch-active {
        background-color: #2563EB;
    }
    
    .filter-select.touch-active {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    }
}

/* Touch-specific optimizations */
.touch-optimized .model-grid-item {
    transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.touch-optimized .model-grid-item.touch-active {
    transform: scale(0.98);
    box-shadow: var(--shadow-sm);
}

.mobile-optimized {
    padding: 0.5rem 0;
}

.mobile-optimized .model-grid-item {
    margin-bottom: 0.5rem;
}

.mobile-swipe-indicator {
    display: none;
}/* Engag
ement metrics styling */
.engagement-count {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.9em;
    color: var(--text-secondary);
}

.engagement-icon {
    font-size: 0.9em;
}

.engagement-number {
    font-weight: 500;
}

/* Engagement level styling */
.engagement-low {
    color: var(--text-secondary);
}

.engagement-medium {
    color: var(--primary-color);
}

.engagement-high {
    color: var(--success-color);
}

.engagement-viral {
    color: var(--warning-color);
    font-weight: 600;
}

.engagement-highlight {
    background: rgba(16, 185, 129, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.engagement-badge {
    font-size: 0.7em;
    padding: 2px 6px;
    border-radius: 10px;
    background: var(--primary-color);
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Engagement error and fallback states */
.engagement-zero {
    color: var(--text-secondary);
    opacity: 0.7;
}

.engagement-unavailable {
    color: var(--text-secondary);
    opacity: 0.5;
    font-style: italic;
}

.engagement-error {
    color: var(--error-color);
    opacity: 0.8;
}

.engagement-error .engagement-icon {
    color: var(--warning-color);
}

/* Engagement validation states */
.engagement-valid {
    color: var(--text-secondary);
}

.engagement-modified {
    border-bottom: 1px dotted var(--warning-color);
}

.engagement-capped {
    color: var(--warning-color);
    font-weight: 600;
}

/* Hover states for engagement metrics */
.engagement-count:hover {
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.engagement-error:hover {
    opacity: 1;
}