:root {
    --tread-black: #1A1A1A;
    --friction-red: #D50000;
    --vulcan-yellow: #FFD600;
    --elastic-green: #00C853;
    --text-light: #F5F5F5;
    --text-muted: #AAAAAA;
    --border-color: #333333;
}

body {
    background-color: var(--tread-black);
    color: var(--text-light);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
}

.mono {
    font-family: 'JetBrains Mono', 'Courier New', monospace;
}

/* Navbar Styling */
.navbar {
    background-color: rgba(26, 26, 26, 0.95);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--friction-red) !important;
}

.nav-link {
    color: var(--text-light) !important;
    font-weight: 500;
    margin-left: 1.5rem;
    transition: color 0.3s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--friction-red) !important;
}

/* Hero Section */
.hero-section {
    padding: 100px 0;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at center, #2a2a2a 0%, #1a1a1a 100%);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}

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

/* Card Styling */
.card {
    background-color: #222222;
    border: 1px solid var(--border-color);
    border-radius: 0;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--friction-red);
}

.card-title {
    color: var(--vulcan-yellow);
    font-weight: 700;
}

/* Footer */
footer {
    background-color: #111111;
    padding: 50px 0;
    border-top: 1px solid var(--border-color);
    margin-top: 50px;
}

/* Custom Components */
.btn-friction {
    background-color: var(--friction-red);
    color: white;
    border-radius: 0;
    padding: 10px 25px;
    font-weight: 700;
    text-transform: uppercase;
    border: none;
    transition: background-color 0.3s ease;
}

.btn-friction:hover {
    background-color: #b30000;
    color: white;
}

.tech-tag {
    display: inline-block;
    padding: 2px 8px;
    background-color: #333;
    color: var(--vulcan-yellow);
    font-size: 0.8rem;
    margin-right: 5px;
    border: 1px solid #444;
}

/* Dashboard Elements */
.dashboard-card {
    background: #1e1e1e;
    border-left: 4px solid var(--friction-red);
    padding: 20px;
    margin-bottom: 20px;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--vulcan-yellow);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

/* Animation for Hero Heatmap simulation */
.heatmap-sim {
    width: 100%;
    height: 300px;
    background: linear-gradient(45deg, #1a1a1a, #331111, #660000, #d50000, #ffcc00);
    background-size: 400% 400%;
    animation: heatmap-pulse 10s ease infinite;
    border: 1px solid #444;
    position: relative;
}

@keyframes heatmap-pulse {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.heatmap-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.1) 2px, rgba(0,0,0,0.1) 4px);
}