@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

:root {
  --bg-primary: #080d14;
  --bg-secondary: #0d1520;
  --bg-card: #111a26;
  --bg-card-hover: #162030;
  --accent: #4a9eff;
  --accent-dim: #1a3a5a;
  --text-primary: #e0e8f4;
  --text-secondary: #7a9ab8;
  --text-muted: #3a5068;
  --border: #1a2a3a;
  --border-accent: #2a4a6a;
  --success: #2ecc71;
  --mono: 'Space Mono', monospace;
  --sans: 'Space Grotesk', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* NAV */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 13, 20, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-logo {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 1px;
  text-decoration: none;
}
.nav-logo:hover { text-decoration: none; opacity: 0.8; }

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

.nav-links a {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-secondary);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }

/* HERO */
.hero {
  padding: 4rem 2rem 3rem;
  max-width: 900px;
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.5px;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.8;
}

/* CONTENT SECTIONS */
.section {
  padding: 3rem 2rem;
  max-width: 900px;
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
}

.section-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

/* MODULE GRID */
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.module-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  text-decoration: none;
  display: block;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}

.module-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.2s;
}

.module-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  text-decoration: none;
  transform: translateY(-2px);
}

.module-card:hover::before { transform: scaleX(1); }

.module-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

.module-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

.module-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  line-height: 1.6;
}

/* COVER GRID (4-item) */
.cover-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.cover-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
}

.cover-num {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 0.35rem;
}

.cover-text {
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 500;
}

/* JARVIS EMBED */
.jarvis-section {
  padding: 2rem;
  max-width: 900px;
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
}

.jarvis-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.jarvis-frame {
  width: 100%;
  height: 600px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-secondary);
}

/* PAGE NAV */
.page-nav {
  padding: 1.5rem 2rem;
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.page-nav a {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}
.page-nav a:hover { color: var(--accent); }

/* TRACK CARDS (homepage) */
.track-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
  padding: 3rem 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.track-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem;
  text-decoration: none;
  display: block;
  transition: all 0.2s;
}

.track-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  text-decoration: none;
  transform: translateY(-3px);
}

.track-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 0.75rem;
}

.track-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.track-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.track-meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

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

footer p {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

footer a {
  color: var(--text-secondary);
}

@media (max-width: 600px) {
  .cover-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .hero h1 { font-size: 2rem; }
  .page-nav { flex-direction: column; gap: 1rem; text-align: center; }
}