/* ==========================================
   Responsive Design for Video-BLADE Homepage
   ========================================== */

/* ==========================================
   Large Tablets and Small Laptops
   ========================================== */
@media (max-width: 1024px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .hero {
        padding: 6rem 0 3rem;
    }
    
    .title {
        font-size: 2.2rem;
    }
    
    .method-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    /* Video Section */
    .video-pair {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .video-comparison {
        padding: 1.5rem;
    }
    
    .nav-links {
        gap: 1.5rem;
    }
    
    .key-results {
        gap: 1.5rem;
    }
    
    .contributions-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }
}

/* ==========================================
   Tablets
   ========================================== */
@media (max-width: 768px) {
    /* Navigation */
    .navbar {
        padding: 0 1rem;
    }
    
    .nav-container {
        padding: 0 1rem;
    }
    
    .nav-links {
        gap: 1rem;
        overflow-x: auto;
        padding-bottom: 0.5rem;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    
    .nav-links::-webkit-scrollbar {
        display: none;
    }
    
    .nav-links a {
        white-space: nowrap;
        font-size: 0.9rem;
        padding: 0.4rem 0.8rem;
    }
    
    /* Hero Section */
    .hero {
        padding: 5rem 0 2rem;
    }
    
    .title {
        font-size: 1.8rem;
        line-height: 1.4;
    }
    
    .authors {
        margin: 1.5rem 0;
    }
    
    .author {
        display: block;
        margin: 0.3rem 0;
    }
    
    .affiliations {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    .institution-badges {
        gap: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .institution-badge {
        font-size: 0.8rem;
        padding: 0.4rem 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 0.8rem;
    }
    
    .btn {
        width: 200px;
        justify-content: center;
    }
    
    /* Typography */
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.7rem;
    }
    
    h3 {
        font-size: 1.3rem;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .section-title {
        margin-bottom: 2rem;
    }
    
    /* Abstract */
    .abstract-content p {
        font-size: 1rem;
    }
    
    .key-results {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .result-item {
        width: 100%;
        max-width: 200px;
    }
    
    .result-number {
        font-size: 2rem;
    }
    
    /* Contributions */
    .contributions-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .contribution-card {
        padding: 1.5rem;
    }
    
    .card-icon {
        width: 3rem;
        height: 3rem;
        font-size: 1.2rem;
    }
    
    /* Method */
    .method-diagram {
        order: -1;
    }
    
    /* Results */
    .performance-table {
        overflow-x: auto;
    }
    
    .performance-table table {
        min-width: 500px;
    }
    
    .performance-table th,
    .performance-table td {
        padding: 0.7rem;
        font-size: 0.9rem;
    }
    
    /* Gallery */
    .gallery-tabs {
        gap: 0.5rem;
    }
    
    .tab-btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .attention-grid {
        grid-template-columns: 1fr;
    }
    
    .samples-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1rem;
    }
    
    /* Video Section */
    .video-pair {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .video-comparison {
        padding: 1.5rem;
    }
    
    /* Citation */
    .citation-box {
        padding: 1.5rem;
    }
    
    #bibtex-text {
        font-size: 0.8rem;
    }
    
    .copy-btn {
        position: static;
        margin-top: 1rem;
        width: 100%;
        justify-content: center;
    }
    
    /* Footer */
    .footer .container {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .footer-links {
        justify-content: center;
        gap: 1rem;
    }
}

/* ==========================================
   Mobile Phones
   ========================================== */
@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    /* Navigation */
    .nav-container {
        height: 3.5rem;
    }
    
    .nav-links a {
        font-size: 0.8rem;
        padding: 0.3rem 0.6rem;
    }
    
    /* Hero */
    .hero {
        padding: 4rem 0 2rem;
    }
    
    .title {
        font-size: 1.5rem;
        line-height: 1.3;
    }
    
    .institution-badges {
        gap: 0.8rem;
        margin-bottom: 1rem;
    }
    
    .institution-badge {
        font-size: 0.75rem;
        padding: 0.3rem 1rem;
    }
    
    .author-notes span {
        display: block;
        margin: 0.2rem 0;
    }
    
    /* Typography */
    h1 {
        font-size: 1.7rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    h3 {
        font-size: 1.2rem;
    }
    
    .section {
        padding: 2.5rem 0;
    }
    
    /* Abstract */
    .abstract-content p {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    .result-number {
        font-size: 1.8rem;
    }
    
    .result-desc {
        font-size: 0.8rem;
    }
    
    /* Contributions */
    .contribution-card {
        padding: 1.2rem;
    }
    
    .contribution-card h3 {
        font-size: 1.1rem;
    }
    
    .contribution-card p {
        font-size: 0.9rem;
    }
    
    /* Method */
    .method-description h4 {
        font-size: 1rem;
    }
    
    .method-description li {
        font-size: 0.9rem;
    }
    
    /* Results */
    .performance-table th,
    .performance-table td {
        padding: 0.5rem;
        font-size: 0.8rem;
    }
    
    /* Gallery */
    .tab-btn {
        padding: 0.5rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .samples-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.8rem;
    }
    
    /* Citation */
    .citation-box {
        padding: 1rem;
    }
    
    #bibtex-text {
        font-size: 0.7rem;
        line-height: 1.4;
    }
    
    /* Video Section */
    .video-pair {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .video-comparison {
        padding: 1rem;
    }
    
    .video-comparison h4 {
        font-size: 1rem;
        margin-bottom: 1rem;
    }
    
    .video-item h5 {
        font-size: 0.9rem;
        margin-bottom: 0.8rem;
    }
    
    /* Footer */
    .footer {
        padding: 1.5rem 0;
    }
    
    .footer p {
        font-size: 0.9rem;
    }
    
    .footer-links a {
        font-size: 0.8rem;
    }
}

/* ==========================================
   Extra Small Mobile Phones
   ========================================== */
@media (max-width: 360px) {
    .title {
        font-size: 1.3rem;
    }
    
    .key-results {
        gap: 0.8rem;
    }
    
    .result-item {
        padding: 1rem;
    }
    
    .result-number {
        font-size: 1.6rem;
    }
    
    .contribution-card {
        padding: 1rem;
    }
    
    .card-icon {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1rem;
    }
    
    .samples-grid {
        grid-template-columns: 1fr;
    }
    
    .performance-table table {
        min-width: 450px;
    }
    
    .gallery-tabs {
        flex-direction: column;
        align-items: center;
    }
    
    .tab-btn {
        width: 200px;
    }
}

/* ==========================================
   Print Styles
   ========================================== */
@media print {
    .navbar,
    .hero-buttons,
    .copy-btn,
    .footer {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .hero {
        padding: 2rem 0;
        background: none;
    }
    
    .section {
        padding: 1rem 0;
        break-inside: avoid;
    }
    
    .contribution-card,
    .result-item {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
    
    .gallery-img {
        max-height: 300px;
        object-fit: contain;
    }
}

/* ==========================================
   Accessibility and Motion Preferences
   ========================================== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero::before {
        animation: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000080;
        --primary-dark: #000060;
        --text-primary: #000000;
        --text-secondary: #333333;
        --border-color: #000000;
    }
    
    .btn-primary {
        background: #000080;
        border: 2px solid #000080;
    }
    
    .btn-secondary {
        border: 2px solid #000000;
        color: #000000;
    }
}

/* Dark mode support (for future implementation) */
@media (prefers-color-scheme: dark) {
    :root {
        --background: #1a1a1a;
        --background-light: #2a2a2a;
        --background-dark: #333333;
        --text-primary: #ffffff;
        --text-secondary: #cccccc;
        --text-light: #999999;
        --border-color: #444444;
    }
    
    .navbar {
        background: rgba(26, 26, 26, 0.95);
    }
    
    .hero {
        background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
    }
    
    .contribution-card,
    .result-item,
    .performance-table,
    .citation-box {
        background: var(--background-light);
    }
}