:root {
    --titanium-gray: #455A64;
    --ruby-red: #C62828;
    --balance-gold: #D4AF37;
    --dial-white: #FAFAFA;
    --deep-bg: #1a1a1a;
    --metal-gradient: linear-gradient(135deg, #455A64 0%, #263238 100%);
}

body {
    background-color: var(--deep-bg);
    color: var(--dial-white);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
}

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

/* Navbar Customization */
.navbar {
    background-color: rgba(26, 26, 26, 0.95) !important;
    border-bottom: 1px solid var(--titanium-gray);
    backdrop-filter: blur(10px);
}

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

.nav-link {
    color: var(--dial-white) !important;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero-section {
    position: relative;
    padding: 100px 0;
    overflow: hidden;
    background: var(--metal-gradient);
    border-bottom: 2px solid var(--ruby-red);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://www.transparenttextures.com/patterns/brushed-alum.png');
    opacity: 0.1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--dial-white);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero-subtitle {
    color: var(--balance-gold);
    font-size: 1.2rem;
    letter-spacing: 3px;
    text-transform: uppercase;
}

/* Card Styling */
.chrono-card {
    background: rgba(69, 90, 100, 0.1);
    border: 1px solid var(--titanium-gray);
    border-radius: 0;
    transition: all 0.3s;
    margin-bottom: 20px;
}

.chrono-card:hover {
    border-color: var(--ruby-red);
    box-shadow: 0 0 15px rgba(198, 40, 40, 0.3);
}

.chrono-card-header {
    border-bottom: 1px solid var(--titanium-gray);
    padding: 15px;
    color: var(--balance-gold);
    font-weight: bold;
}

/* Indicators */
.metric-badge {
    background: rgba(198, 40, 40, 0.15);
    border-left: 3px solid var(--ruby-red);
    padding: 10px 20px;
    margin: 10px 0;
}

.metric-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.5rem;
    color: var(--dial-white);
}

.metric-label {
    font-size: 0.75rem;
    color: var(--titanium-gray);
    text-transform: uppercase;
}

/* Footer */
footer {
    padding: 50px 0;
    border-top: 1px solid var(--titanium-gray);
    background-color: #111;
}

.footer-logo {
    color: var(--balance-gold);
    font-weight: bold;
    font-size: 1.5rem;
}

/* Typography */
h1, h2, h3, h4, h5 {
    color: var(--balance-gold);
}

.text-ruby { color: var(--ruby-red); }
.text-gold { color: var(--balance-gold); }
.text-titanium { color: var(--titanium-gray); }

/* Formulas */
.formula-box {
    background: #222;
    padding: 20px;
    border-radius: 4px;
    border: 1px dashed var(--titanium-gray);
    margin: 20px 0;
}