styles.css

/* Root Variables */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #10b981;
    --accent: #f59e0b;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: #334155;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-hero: linear-gradient(135deg, #1e293b 0%, #0f172a 50%, #1a1f3c 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Hero Section */
.hero {
    background: var(--gradient-hero);
    padding: 2rem 2rem 1.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.badge {
    display: inline-block;
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary-light);
    padding: 0.3rem 0.7rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #f1f5f9 0%, #818cf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.4rem;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 400;
}

.description {
    font-size: 0.85rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 1rem;
    line-height: 1.5;
}

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

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

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-light);
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* Main Content */
.content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
}

/* Sections - all visible */
.section {
    display: block;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.section-header {
    margin-bottom: 1rem;
    text-align: center;
}

.section-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.section-header p {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Dimension Toggle Buttons */
.dimension-toggle {
    display: flex;
    justify-content: center;
    gap: 0.4rem;
    margin-bottom: 1rem;
}

.dim-btn {
    padding: 0.4rem 0.9rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 2rem;
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.dim-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.dim-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

/* Charts Grid */
.charts-grid {
    display: grid;
    gap: 0.75rem;
}

.charts-grid.three-col {
    grid-template-columns: repeat(3, 1fr);
}

.charts-grid.single {
    grid-template-columns: 1fr;
    max-width: 900px;
    margin: 0 auto;
}

@media (max-width: 1200px) {
    .charts-grid.three-col {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .charts-grid.three-col {
        grid-template-columns: 1fr;
    }
}

/* Chart Card */
.chart-card {
    background: var(--bg-card);
    border-radius: 0.5rem;
    padding: 0.75rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.chart-card h3 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    text-align: center;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--border);
}

.chart-card.wide {
    padding: 1rem;
}

/* Chart Containers - Fixed heights */
.chart-container {
    height: 280px;
    width: 100%;
}

.chart-container-tall {
    height: 380px;
    width: 100%;
}

/* Footer */
.footer {
    text-align: center;
    padding: 1rem;
    color: var(--text-muted);
    font-size: 0.75rem;
    border-top: 1px solid var(--border);
    margin-top: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 1.5rem 1rem;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .subtitle {
        font-size: 0.9rem;
    }

    .stats-row {
        gap: 1rem;
    }

    .stat-value {
        font-size: 1.25rem;
    }

    .content {
        padding: 0.75rem;
    }

    .dimension-toggle {
        flex-wrap: wrap;
    }

    .dim-btn {
        padding: 0.35rem 0.7rem;
        font-size: 0.7rem;
    }

    .chart-container {
        height: 250px;
    }

    .chart-container-tall {
        height: 320px;
    }
}

/* Plotly overrides for dark theme */
.js-plotly-plot .plotly .modebar {
    background: rgba(30, 41, 59, 0.9) !important;
}

.js-plotly-plot .plotly .modebar-btn path {
    fill: var(--text-secondary) !important;
}

.js-plotly-plot .plotly .modebar-btn:hover path {
    fill: var(--text-primary) !important;
}

/* Ensure Plotly charts don't overflow */
.js-plotly-plot {
    width: 100% !important;
    height: 100% !important;
}