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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 60px 20px;
    text-align: center;
}

.title {
    font-size: 3.5em;
    font-weight: 700;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.subtitle {
    font-size: 1.4em;
    font-weight: 400;
    margin-bottom: 30px;
    opacity: 0.95;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.authors {
    margin: 30px 0 20px;
    font-size: 1.1em;
    line-height: 1.8;
}

.authors sup {
    font-size: 0.8em;
}

.affiliations {
    margin: 20px 0;
    font-size: 0.95em;
    opacity: 0.9;
}

.affiliations p {
    margin: 10px 0;
}

.footnote {
    font-size: 0.85em;
    font-style: italic;
}

/* Links/Buttons */
.links {
    margin-top: 30px;
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.button {
    display: inline-block;
    padding: 12px 30px;
    background-color: white;
    color: #667eea;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    background-color: #f8f9fa;
}

.button.primary {
    background-color: #667eea;
    color: white;
}

.button.primary:hover {
    background-color: #5568d3;
}

/* Sections */
.section {
    padding: 60px 20px;
    background-color: white;
    margin-bottom: 2px;
}

.section-title {
    font-size: 2.5em;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
    color: #2d3748;
}

.highlight-section {
    background: linear-gradient(135deg, #f5f7fa 0%, #e3e8ef 100%);
}

/* Abstract */
.abstract-section {
    background-color: #fff;
}

.abstract-content {
    max-width: 900px;
    margin: 0 auto;
    font-size: 1.1em;
    line-height: 1.8;
    color: #4a5568;
}

.abstract-content p {
    margin-bottom: 20px;
}

.abstract-content strong {
    color: #2d3748;
    font-weight: 600;
}

.highlight {
    color: #667eea;
    font-weight: 600;
}

/* Images */
.image-container {
    text-align: center;
    margin: 40px 0;
}

.image-container img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.caption {
    margin-top: 15px;
    font-size: 0.95em;
    color: #666;
    line-height: 1.6;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    text-align: left;
    padding: 0 20px;
}

/* Design & Examples Grid */
.design-examples-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin: 40px 0;
    align-items: start;
}

.design-column {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.examples-column {
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
}

/* Benchmark Images (legacy, keep for compatibility) */
.benchmark-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
    margin: 40px 0;
}

/* Two Column Layout */
.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin: 40px 0;
}

.column h3 {
    font-size: 1.5em;
    margin-bottom: 20px;
    color: #2d3748;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    max-width: 600px;
}

.stat-item {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: 2.5em;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.95em;
    color: #666;
    font-weight: 500;
}

/* Challenge Grid */
.challenge-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.challenge-item {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    border-left: 4px solid #667eea;
}

.challenge-item strong {
    display: block;
    font-size: 1.1em;
    color: #2d3748;
    margin-bottom: 8px;
}

.challenge-item p {
    color: #4a5568;
    margin-bottom: 8px;
}

.challenge-item small {
    color: #718096;
    font-style: italic;
}

/* Key Findings */
.key-findings {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin: 40px 0;
}

.finding-item {
    display: flex;
    align-items: flex-start;
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.finding-icon {
    font-size: 2.5em;
    margin-right: 20px;
    flex-shrink: 0;
}

.finding-text strong {
    display: block;
    font-size: 1.15em;
    color: #2d3748;
    margin-bottom: 8px;
}

.finding-text p {
    color: #4a5568;
    line-height: 1.5;
}

/* Leaderboard */
.leaderboard-section {
    background: linear-gradient(135deg, #f5f7fa 0%, #e3e8ef 100%);
}

.leaderboard-intro {
    max-width: 900px;
    margin: 0 auto 40px;
    padding: 25px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    border-left: 4px solid #667eea;
}

.leaderboard-intro p {
    font-size: 1.05em;
    line-height: 1.8;
    color: #4a5568;
    margin: 0;
}

.leaderboard-intro strong {
    color: #2d3748;
    font-weight: 600;
}

.leaderboard-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
}

.tab-button {
    padding: 12px 30px;
    background-color: white;
    color: #667eea;
    border: 2px solid #667eea;
    border-radius: 25px;
    font-weight: 600;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-button:hover {
    background-color: #f0f4ff;
    transform: translateY(-2px);
}

.tab-button.active {
    background-color: #667eea;
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.leaderboard-content {
    display: none;
}

.leaderboard-content.active {
    display: block;
}

.leaderboard-subtitle {
    font-size: 1.5em;
    margin: 40px 0 20px 0;
    color: #2d3748;
    font-weight: 600;
}

.leaderboard-table-container {
    max-height: 600px;
    overflow-y: auto;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.leaderboard-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95em;
    background: white;
}

.leaderboard-table thead {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.leaderboard-table th {
    padding: 15px 12px;
    text-align: center;
    font-weight: 600;
    white-space: nowrap;
}

.leaderboard-table th:nth-child(1) {
    width: 60px;
}

.leaderboard-table th:nth-child(2) {
    text-align: left;
    width: 40%;
}

.leaderboard-table td {
    padding: 12px;
    text-align: center;
    border-bottom: 1px solid #e2e8f0;
}

.leaderboard-table td:nth-child(1) {
    font-size: 1.2em;
}

.leaderboard-table td:nth-child(2) {
    text-align: left;
    font-weight: 500;
}

.leaderboard-table tbody tr:hover {
    background-color: #f7fafc;
}

.leaderboard-table .rank-1 {
    background-color: #fff8e1;
}

.leaderboard-table .rank-2 {
    background-color: #f5f5f5;
}

.leaderboard-table .rank-3 {
    background-color: #fff3e0;
}

.leaderboard-table .rank-1 td:nth-child(3),
.leaderboard-table .rank-2 td:nth-child(3),
.leaderboard-table .rank-3 td:nth-child(3) {
    font-weight: 700;
    font-size: 1.1em;
    color: #667eea;
}

/* Results Table */
.table-container {
    margin: 40px 0;
    overflow-x: auto;
}

.table-wrapper {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    overflow-x: auto;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95em;
}

.results-table thead {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.results-table th {
    padding: 15px 12px;
    text-align: center;
    font-weight: 600;
    white-space: nowrap;
}

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

.results-table td {
    padding: 12px;
    text-align: center;
    border-bottom: 1px solid #e2e8f0;
}

.results-table td:first-child {
    text-align: left;
    font-weight: 500;
}

.results-table tbody tr:hover {
    background-color: #f7fafc;
}

.results-table .top-model {
    background-color: #eef2ff;
    font-weight: 600;
}

.results-table .top-model td:last-child {
    color: #667eea;
    font-weight: 700;
    font-size: 1.1em;
}

/* Analysis Grid */
.analysis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.analysis-item {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.analysis-item h3 {
    font-size: 1.4em;
    margin-bottom: 20px;
    color: #2d3748;
}

.analysis-item p {
    color: #4a5568;
    line-height: 1.6;
    margin-bottom: 15px;
}

.analysis-item ul {
    margin-left: 20px;
    color: #4a5568;
}

.analysis-item ul li {
    margin-bottom: 10px;
    line-height: 1.6;
}

.analysis-item .image-container {
    margin: 20px 0;
}

/* Conclusion */
.conclusion-content {
    max-width: 900px;
    margin: 0 auto;
    font-size: 1.1em;
    line-height: 1.8;
    color: #4a5568;
}

.conclusion-content p {
    margin-bottom: 20px;
}

.conclusion-content ul {
    margin: 20px 0 20px 40px;
}

.conclusion-content ul li {
    margin-bottom: 10px;
}

.cta-box {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px;
    border-radius: 12px;
    text-align: center;
    margin-top: 40px;
}

.cta-box h3 {
    font-size: 2em;
    margin-bottom: 15px;
}

.cta-box p {
    font-size: 1.1em;
    margin-bottom: 25px;
    opacity: 0.95;
}

/* Citation */
.citation-section {
    background-color: #2d3748;
    color: white;
}

.citation-section .section-title {
    color: white;
}

.citation-box {
    background-color: #1a202c;
    padding: 25px;
    border-radius: 8px;
    overflow-x: auto;
}

.citation-box pre {
    margin: 0;
}

.citation-box code {
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    line-height: 1.6;
    color: #f7fafc;
}

/* Footer */
.footer {
    background-color: #1a202c;
    color: #a0aec0;
    text-align: center;
    padding: 30px 20px;
}

.footer a {
    color: #667eea;
    text-decoration: none;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .title {
        font-size: 2.5em;
    }

    .subtitle {
        font-size: 1.1em;
    }

    .two-column {
        grid-template-columns: 1fr;
    }

    .design-examples-grid {
        grid-template-columns: 1fr;
    }

    .benchmark-images {
        grid-template-columns: 1fr;
    }

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

    .key-findings {
        grid-template-columns: 1fr;
    }

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

    .section {
        padding: 40px 15px;
    }

    .section-title {
        font-size: 2em;
    }

    .results-table {
        font-size: 0.85em;
    }

    .results-table th,
    .results-table td {
        padding: 8px 6px;
    }

    .leaderboard-intro {
        padding: 20px;
        font-size: 0.95em;
    }

    .leaderboard-tabs {
        flex-direction: column;
        align-items: stretch;
    }

    .tab-button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 2em;
    }

    .subtitle {
        font-size: 1em;
    }

    .authors {
        font-size: 0.95em;
    }

    .affiliations {
        font-size: 0.85em;
    }
}