/* LSA-Probe Main Styles */

:root {
    --color-bg: #0a0a0a;
    --color-bg-light: #1a1a1a;
    --color-text: #ffffff;
    --color-text-dim: #a0a0a0;
    --color-primary: #0173B2;
    --color-secondary: #029E73;
    --color-accent: #DE8F05;
    --color-member: #0173B2;
    --color-nonmember: #DE8F05;
    --gradient-primary: linear-gradient(135deg, #0173B2 0%, #029E73 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--color-text-dim);
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
}

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

/* Sections */
.section {
    padding: 6rem 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

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

.section-title {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    text-align: center;
    color: var(--color-text-dim);
    margin-bottom: 4rem;
}

/* Hero Section */
.hero {
    padding-top: 8rem;
    text-align: center;
}

.venue-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: var(--gradient-primary);
    border-radius: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-text-dim);
    margin-bottom: 2rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero-authors {
    font-size: 1.1rem;
    color: var(--color-text-dim);
    margin-bottom: 0.5rem;
}

.hero-affiliation {
    font-size: 1rem;
    color: var(--color-text-dim);
    margin-bottom: 3rem;
}

.hero-metrics {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-bottom: 3rem;
}

.metric-item {
    text-align: center;
}

.metric-value {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.metric-label {
    font-size: 0.9rem;
    color: var(--color-text-dim);
    margin-top: 0.5rem;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(1, 115, 178, 0.3);
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-primary);
}

.btn-copy {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

/* Problem Section */
.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.problem-card {
    background: var(--color-bg);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    transition: transform 0.3s ease;
}

.problem-card:hover {
    transform: translateY(-5px);
}

.problem-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.problem-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.problem-card p {
    color: var(--color-text-dim);
    line-height: 1.6;
}

.comparison-chart {
    background: var(--color-bg);
    padding: 2rem;
    border-radius: 1rem;
}

.chart-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

/* Method Section */
.method-overview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.method-description h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.method-description p {
    color: var(--color-text-dim);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.algorithm-box {
    background: var(--color-bg-light);
    padding: 2rem;
    border-radius: 1rem;
    border-left: 4px solid var(--color-primary);
}

.algorithm-step {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.algorithm-step:last-child {
    margin-bottom: 0;
}

.step-number {
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.step-content {
    flex: 1;
    color: var(--color-text-dim);
    line-height: 1.6;
}

.step-content strong {
    color: var(--color-text);
}

.algorithm-visualization {
    background: var(--color-bg-light);
    padding: 2rem;
    border-radius: 1rem;
}

.algorithm-visualization h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

#algorithm-canvas-container {
    position: relative;
}

#algorithm-canvas {
    width: 100%;
    height: auto;
    border-radius: 0.5rem;
    background: #0d0d0d;
}

.algorithm-controls {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    align-items: center;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-group label {
    font-size: 0.9rem;
    color: var(--color-text-dim);
}

.control-group select {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.9rem;
}

#algorithm-status {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(1, 115, 178, 0.1);
    border-radius: 0.5rem;
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    color: var(--color-primary);
    min-height: 60px;
}

.timestep-insight {
    background: var(--color-bg-light);
    padding: 2rem;
    border-radius: 1rem;
}

.timestep-insight h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.timestep-insight p {
    color: var(--color-text-dim);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.timestep-diagram {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.timestep-stage {
    text-align: center;
    padding: 2rem 1rem;
    background: var(--color-bg);
    border-radius: 0.5rem;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.timestep-stage.active {
    border-color: var(--color-primary);
    box-shadow: 0 0 20px rgba(1, 115, 178, 0.3);
}

.stage-label {
    font-weight: 700;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.stage-description {
    color: var(--color-text-dim);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Results Section */
.results-panel {
    background: var(--color-bg-light);
    padding: 2rem;
    border-radius: 1rem;
    margin-bottom: 3rem;
}

.results-panel h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
}

.result-card {
    background: var(--color-bg-light);
    padding: 2rem;
    border-radius: 1rem;
}

.result-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.result-card p {
    color: var(--color-text-dim);
    margin-bottom: 1.5rem;
}

/* Resources Section */
.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.resource-card {
    background: var(--color-bg);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    transition: transform 0.3s ease;
}

.resource-card:hover {
    transform: translateY(-5px);
}

.resource-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.resource-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.resource-card p {
    color: var(--color-text-dim);
    margin-bottom: 1.5rem;
}

.citation-box {
    background: var(--color-bg);
    padding: 2rem;
    border-radius: 1rem;
    position: relative;
}

.citation-box h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.citation-box pre {
    background: #0d0d0d;
    padding: 1.5rem;
    border-radius: 0.5rem;
    overflow-x: auto;
}

.citation-box code {
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    color: var(--color-text-dim);
}

/* Footer */
.footer {
    padding: 4rem 0 2rem;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-links a {
    color: var(--color-text-dim);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Responsive */
@media (max-width: 1024px) {
    .method-overview {
        grid-template-columns: 1fr;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-metrics {
        flex-direction: column;
        gap: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .problem-grid,
    .resource-grid {
        grid-template-columns: 1fr;
    }
    
    .timestep-diagram {
        grid-template-columns: 1fr;
    }
}