:root {
    --primary: #ef4444;
    --primary-light: #fca5a5;
    --bg-dark: #0f0f23;
    --bg-card: #1a1a2e;
    --bg-elevated: #252545;
    --text: #e5e7eb;
    --text-muted: #9ca3af;
    --border: rgba(255, 255, 255, 0.1);
    --critical: #dc2626;
    --warning: #f59e0b;
    --stable: #22c55e;
}

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

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

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background: rgba(15, 15, 35, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 2rem;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero */
.hero {
    min-height: 70vh;
    background: linear-gradient(135deg, var(--bg-dark) 0%, #2a1515 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 5% 3rem;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.key-stat {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    background: var(--bg-card);
    border: 2px solid var(--primary);
    border-radius: 16px;
    padding: 1.5rem 3rem;
}

.stat-number {
    font-size: 4rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

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

/* Charts Section */
.charts {
    padding: 4rem 5%;
}

.charts h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.chart-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.chart-container h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-light);
}

.chart-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.chart-note {
    text-align: center;
    color: var(--text-muted);
    margin-top: 1rem;
    font-size: 0.9rem;
}

/* Data Grid */
.data-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.data-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1.5rem;
    border-left: 4px solid;
}

.data-card.critical {
    border-color: var(--critical);
}

.data-card.warning {
    border-color: var(--warning);
}

.data-card.stable {
    border-color: var(--stable);
}

.data-card h4 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.data-card ul {
    list-style: none;
}

.data-card li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
}

.data-card li:last-child {
    border-bottom: none;
}

.data-note {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 1rem;
    font-style: italic;
}

/* Implications */
.implications {
    padding: 4rem 5%;
    background: var(--bg-card);
}

.implications h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.implication-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.implication-card {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: border-color 0.3s;
}

.implication-card:hover {
    border-color: var(--primary);
}

.implication-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.implication-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.implication-card p {
    color: var(--text-muted);
}

/* About */
.about {
    padding: 4rem 5%;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.about p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 768px) {
    .chart-row {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 3rem;
    }
}