:root {
  --bg: #0d1321;
  --bg-soft: #111a2b;
  --panel: #16233b;
  --text: #eaf0ff;
  --muted: #b7c4e6;
  --line: #2a3b5f;
  --accent: #54c6eb;
  --accent-2: #87f5c8;
  --max: 1040px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: linear-gradient(160deg, var(--bg) 0%, #0a0f1a 100%);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 0;
}

.brand { font-weight: 700; letter-spacing: 0.02em; }

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1rem;
  font-size: 0.95rem;
}
nav a:hover { color: var(--text); }

.hero { padding: 5.5rem 0 4rem; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 2rem;
  align-items: start;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-2);
  font-size: 0.75rem;
  margin-bottom: 0.75rem;
}

h1 {
  font-size: clamp(2rem, 4.2vw, 3.6rem);
  line-height: 1.1;
  margin: 0 0 1rem;
}

.lead { color: var(--muted); max-width: 62ch; }

.cta-row { display: flex; gap: 0.8rem; margin-top: 1.4rem; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 0.68rem 1.05rem;
  border-radius: 0.6rem;
  text-decoration: none;
  font-weight: 600;
}
.btn-primary {
  color: #04242c;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
}
.btn-ghost {
  color: var(--text);
  border: 1px solid var(--line);
  background: #101a2d;
}

.hero-card {
  background: linear-gradient(145deg, #152541, #0f1a2f);
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  padding: 1.2rem 1.1rem;
}
.hero-card h2 { margin-top: 0; font-size: 1.1rem; }
.hero-card ul { margin: 0.6rem 0 0; padding-left: 1rem; color: var(--muted); }
.hero-card li { margin-bottom: 0.55rem; }

.section { padding: 3.5rem 0; }
.section-alt {
  background: linear-gradient(180deg, color-mix(in oklab, var(--bg-soft) 82%, transparent), transparent);
  border-block: 1px solid var(--line);
}

h2 { margin-top: 0; font-size: 1.8rem; }
.section-intro { color: var(--muted); }

.cards {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}
.card {
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  padding: 1rem;
  background: color-mix(in oklab, var(--panel) 86%, transparent);
}
.card h3 { margin-top: 0; }
.card p { color: var(--muted); }

.work-list { color: var(--text); }
.work-list li { margin-bottom: 0.5rem; }

.narrow { max-width: 760px; }
.muted { color: var(--muted); }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.4rem 0 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  nav { display: none; }
}


/* Top nav CTA to learning platform */
.site-header nav a.nav-cta {
  font-weight: 700;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(15, 23, 42, 0.15);
  background: #0f172a;
  color: #fff;
}
.site-header nav a.nav-cta:hover {
  opacity: 0.92;
}


.project-note {
  margin-top: 1.15rem;
  max-width: 62ch;
  color: var(--muted);
  font-size: 0.98rem;
  padding: 0.85rem 1rem;
  border-left: 3px solid var(--accent);
  background: color-mix(in oklab, var(--panel) 70%, transparent);
  border-radius: 0 0.5rem 0.5rem 0;
}
.project-note strong { color: var(--text); }