:root {
    /* Brand Palette */
    --void-navy: #0B1120;
    --context-cyan: #22D3EE;
    --signal-amber: #F59E0B;
    --starlight-white: #F8FAFC;
    --slate-grey: #94A3B8;
    --slate-blue: #1E293B;

    /* Semantic Mappings */
    --bg-color: var(--void-navy);
    --text-primary: var(--starlight-white);
    --text-secondary: var(--slate-grey);
    --accent-color: var(--context-cyan);
    --border-color: rgba(34, 211, 238, 0.3);
    
    /* Effects */
    --glow-shadow: 0 0 15px rgba(34, 211, 238, 0.4);
    --glass-bg: rgba(15, 23, 42, 0.8);
    --glass-backdrop: blur(10px);
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-code: 'Roboto Mono', monospace;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 800; /* Extra Bold */
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.mono {
    font-family: var(--font-code);
}

.text-cyan {
    color: var(--context-cyan);
}

.text-muted {
    color: var(--text-secondary);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
header {
    padding: 1.5rem 0;
    background: rgba(11, 17, 32, 0.9);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: var(--glass-backdrop);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
}

.nav-logo {
    height: 40px;
    width: auto;
    border-radius: 4px;
}

.wordmark {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.wordmark span.ai {
    color: var(--context-cyan);
    font-weight: 900;
    text-shadow: 0 0 10px rgba(34, 211, 238, 0.2);
}

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

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

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

/* Hero Section */
.hero {
    padding: 8rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Abstract Background Pattern */
.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(34, 211, 238, 0.1) 0%, transparent 70%);
    z-index: -1;
    pointer-events: none;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.bracket-frame {
    display: inline-block;
    color: var(--context-cyan);
    margin: 0 0.2rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 3rem;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-primary {
    background: transparent;
    border: 1px solid var(--context-cyan);
    color: var(--context-cyan);
    box-shadow: var(--glow-shadow);
}

.btn-primary:hover {
    background: rgba(34, 211, 238, 0.1);
    box-shadow: 0 0 25px rgba(34, 211, 238, 0.6);
}

/* Philosophy Section */
.philosophy {
    padding: 5rem 0;
    background: var(--slate-blue);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.card {
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: var(--context-cyan);
    opacity: 0.5;
}

.card h3 {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-icon {
    font-family: var(--font-code);
    color: var(--context-cyan);
}

/* Footer */
footer {
    padding: 3rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
}

.footer-logo {
    margin-bottom: 1rem;
    display: inline-block;
    color: var(--text-secondary);
    font-family: var(--font-code);
}

.copy {
    color: var(--text-secondary);
    font-size: 0.875rem;
}