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

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --accent-color: #dc2626;
    --background: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --card-bg: #f8fafc;
    --code-bg: #f1f5f9;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--background);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0 3rem;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.subtitle {
    font-size: 1.25rem;
    opacity: 0.95;
    margin-bottom: 2rem;
    font-weight: 400;
}

.authors {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.author {
    margin: 0 1rem;
}

.affiliations {
    font-size: 0.95rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.affiliations span {
    margin: 0 1rem;
}

.links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn-secondary {
    background: rgba(255,255,255,0.2);
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

/* Main Content */
main {
    padding: 4rem 2rem;
}

section {
    margin-bottom: 4rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    border-bottom: 3px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

ul, ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

li {
    margin-bottom: 0.5rem;
    line-height: 1.7;
}

/* Abstract Section */
#abstract {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 0.5rem;
    border-left: 4px solid var(--primary-color);
}

#abstract ul {
    margin-top: 1rem;
}

#abstract li {
    margin-bottom: 0.75rem;
}

/* Method Section */
.method-container {
    display: grid;
    gap: 2rem;
    margin-top: 2rem;
}

.pipeline-img {
    width: 100%;
    max-width: 100%;
    height: auto;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
}

.method-description {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 0.5rem;
}

.method-description ol {
    margin-top: 1rem;
}

.method-description li {
    margin-bottom: 1rem;
}

.method-note {
    margin-top: 1.5rem;
    padding: 1.5rem 2rem;
    background: white;
    border-left: 4px solid var(--secondary-color);
    border-radius: 0.5rem;
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.method-note h4 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.method-note p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.7;
}

/* Results Section */
.result-section {
    margin-bottom: 3rem;
}

.result-img-large {
    width: 100%;
    max-width: 100%;
    height: auto;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    margin: 1.5rem 0;
}

.result-img-medium {
    width: 100%;
    max-width: 800px;
    height: auto;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    margin: 1.5rem auto;
    display: block;
}

.result-img-contained {
    width: 100%;
    max-width: 900px;
    height: auto;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    margin: 1.5rem auto;
    display: block;
}

.figure-grid-2col {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.subfigure {
    text-align: center;
}

.result-img-subfigure {
    width: 100%;
    height: auto;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
}

.subfigure-caption {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    font-style: italic;
}

.figure-caption {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-style: italic;
    line-height: 1.6;
}

/* Table Styles */
.table-container {
    overflow-x: auto;
    margin: 2rem 0;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border-radius: 0.5rem;
    overflow: hidden;
}

.results-table thead {
    background: var(--primary-color);
    color: white;
}

.results-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.95rem;
}

.results-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.results-table tbody tr:hover {
    background: var(--card-bg);
}

.results-table tbody tr:last-child td {
    border-bottom: none;
}

.table-note {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 1rem;
    line-height: 1.6;
}

/* Implications Grid */
.implications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.implication-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 0.5rem;
    border-left: 4px solid var(--accent-color);
}

.implication-card h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.implication-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin: 0;
}

/* Model Selector & Question Selector */
.model-selector,
.question-selector {
    margin-bottom: 1.5rem;
}

.model-selector label,
.question-selector label {
    font-weight: 600;
    color: var(--text-primary);
    margin-right: 1rem;
    font-size: 1.1rem;
    display: inline-block;
    margin-bottom: 0.5rem;
}

#model-select,
#question-select {
    padding: 0.5rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    background: white;
    color: var(--text-primary);
    cursor: pointer;
    transition: border-color 0.3s ease;
    min-width: 300px;
    max-width: 100%;
}

#model-select:hover,
#question-select:hover {
    border-color: var(--primary-color);
}

#model-select:focus,
#question-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Static Figure Toggle */
.static-figure-toggle {
    margin-top: 2rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 0.5rem;
}

.static-figure-toggle summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--primary-color);
    padding: 0.5rem;
    user-select: none;
}

.static-figure-toggle summary:hover {
    text-decoration: underline;
}

.static-figure-toggle[open] summary {
    margin-bottom: 1rem;
}

/* Interactive Data Exploration */
#data-exploration {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 0.5rem;
    margin-bottom: 4rem;
}

.viz-container {
    background: white;
    padding: 2rem;
    border-radius: 0.5rem;
    margin-top: 2rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.viz-container h3 {
    margin-top: 0;
    color: var(--text-primary);
}

.viz-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

#variance-viz,
#domain-viz,
#response-matrix-viz {
    min-height: 400px;
    width: 100%;
}

#per-question-viz {
    min-height: 450px;
    width: 100%;
}

/* About This Work Section */
.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.about-box {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-box:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    border-color: var(--primary-color);
}

.about-box h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.about-box p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* Contact Section */
.contact-list {
    list-style: none;
    margin-left: 0;
}

.contact-list li {
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.contact-list a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-list a:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

/* Footer */
footer {
    background: var(--text-primary);
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

footer p {
    margin: 0.5rem 0;
    opacity: 0.9;
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.8rem;
    }

    .subtitle {
        font-size: 1.1rem;
    }

    .container {
        padding: 0 1rem;
    }

    main {
        padding: 2rem 1rem;
    }

    .implications-grid,
    .figure-grid-2col {
        grid-template-columns: 1fr;
    }

    .links {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    h2 {
        font-size: 1.5rem;
    }

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

    .results-table th,
    .results-table td {
        padding: 0.75rem 0.5rem;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5rem;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection Color */
::selection {
    background: var(--primary-color);
    color: white;
}