/* Reset and Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary-color: #4a90d9;
    --primary-dark: #2c5aa0;
    --accent-color: #ff6b35;
    --text-color: #2c3e50;
    --text-light: #5a6c7d;
    --bg-color: #ffffff;
    --bg-alt: #f8fafc;
    --border-color: #e2e8f0;
    --shadow: 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);
    --max-width: 1100px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--bg-color);
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    padding: 60px 0 40px;
    text-align: center;
    background: linear-gradient(180deg, #f0f7ff 0%, #ffffff 100%);
}

.venue-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 8px 24px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
}

.title {
    font-size: clamp(28px, 5vw, 42px);
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 12px;
    line-height: 1.2;
}

.model-name {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: clamp(16px, 2.5vw, 20px);
    font-weight: 400;
    color: var(--text-light);
    margin-bottom: 32px;
}

/* Authors */
.authors {
    margin-bottom: 16px;
    font-size: 16px;
}

.author {
    display: inline-block;
    margin: 4px 12px;
}

.author a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.author a:hover {
    color: var(--primary-color);
}

.author sup {
    color: var(--primary-color);
    font-weight: 600;
}

/* Affiliations */
.affiliations {
    margin-bottom: 32px;
    font-size: 14px;
    color: var(--text-light);
}

.affiliation {
    display: inline-block;
    margin: 4px 16px;
}

.affiliation sup {
    color: var(--primary-color);
    font-weight: 600;
}

/* Links/Buttons */
.links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    background: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

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

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

.btn-primary:hover {
    color: white;
    opacity: 0.9;
}

/* Sections */
.section {
    padding: 60px 0;
}

.section-alt {
    background-color: var(--bg-alt);
}

.section-title {
    font-size: 28px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
    color: var(--text-color);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    margin: 16px auto 0;
    border-radius: 2px;
}

/* Video Section */
.video-section {
    padding: 40px 0;
    background: #1a1a2e;
}

.video-wrapper {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.video-wrapper video {
    width: 100%;
    display: block;
}

/* Teaser */
.teaser-section {
    padding-top: 40px;
}

.teaser-image {
    width: 100%;
    max-width: 900px;
    display: block;
    margin: 0 auto;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

/* Caption */
.caption {
    font-size: 14px;
    color: var(--text-light);
    text-align: center;
    margin-top: 16px;
    line-height: 1.6;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

/* Abstract */
.abstract {
    max-width: 850px;
    margin: 0 auto;
    text-align: justify;
}

.abstract p {
    margin-bottom: 16px;
    font-size: 16px;
}

.abstract p:last-child {
    margin-bottom: 0;
}

/* Method */
.method-content {
    text-align: center;
}

.method-image {
    width: 100%;
    max-width: 850px;
    display: block;
    margin: 0 auto 16px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.method-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.method-item {
    background: var(--bg-color);
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: left;
    transition: var(--transition);
}

.method-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.method-item h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.method-item h3 i {
    margin-right: 8px;
}

.method-item p {
    font-size: 14px;
    color: var(--text-light);
}

/* Results */
.result-block {
    margin-bottom: 60px;
}

.result-block:last-child {
    margin-bottom: 0;
}

.result-block h3 {
    font-size: 22px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 24px;
    color: var(--text-color);
}

.result-image {
    width: 100%;
    max-width: 750px;
    display: block;
    margin: 0 auto;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

/* Specific image sizes based on aspect ratio */
.result-image.img-small {
    max-width: 420px;
}

.result-image.img-medium {
    max-width: 580px;
}

.result-image.img-wide {
    max-width: 700px;
}

.result-image.img-large {
    max-width: 750px;
}

/* Table */
.table-wrapper {
    overflow-x: auto;
    margin: 0 auto;
    max-width: 800px;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    background: var(--bg-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.results-table th,
.results-table td {
    padding: 12px 16px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.results-table th {
    background: var(--bg-alt);
    font-weight: 600;
    color: var(--text-color);
}

.results-table td:first-child {
    text-align: left;
}

.results-table tr.highlight {
    background: linear-gradient(135deg, rgba(74, 144, 217, 0.1), rgba(255, 107, 53, 0.1));
}

.results-table tr.highlight td {
    font-weight: 600;
}

/* Contributions */
.contributions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.contribution-item {
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-color);
    border-radius: 16px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.contribution-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.contribution-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 16px;
    color: white;
    font-size: 24px;
}

.contribution-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-color);
}

.contribution-item p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* BibTeX */
.bibtex-wrapper {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
}

.copy-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 8px 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.copy-btn:hover {
    background: var(--primary-dark);
}

.bibtex {
    background: #1e293b;
    color: #e2e8f0;
    padding: 24px;
    padding-top: 56px;
    border-radius: 12px;
    overflow-x: auto;
    font-size: 13px;
    line-height: 1.6;
}

.bibtex code {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

/* Footer */
.footer {
    padding: 32px 0;
    text-align: center;
    background: var(--bg-alt);
    border-top: 1px solid var(--border-color);
}

.footer p {
    font-size: 14px;
    color: var(--text-light);
}

.footer a {
    color: var(--primary-color);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        padding: 40px 0 30px;
    }

    .section {
        padding: 40px 0;
    }

    .authors {
        font-size: 14px;
    }

    .author {
        margin: 4px 8px;
    }

    .links {
        gap: 8px;
    }

    .btn {
        padding: 10px 16px;
        font-size: 13px;
    }

    .method-details {
        grid-template-columns: 1fr;
    }

    .contributions {
        grid-template-columns: 1fr;
    }

    .results-table {
        font-size: 12px;
    }

    .results-table th,
    .results-table td {
        padding: 8px 10px;
    }
}

/* Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section {
    animation: fadeInUp 0.6s ease-out;
}