:root {
  --bg: #0c111b;
  --card: #0f172a;
  --accent: #4cc9f0;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --border: #1f2937;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background:
    radial-gradient(circle at 20% 20%, rgba(76, 201, 240, 0.06), transparent 25%),
    radial-gradient(circle at 80% 0%, rgba(56, 189, 248, 0.05), transparent 22%),
    var(--bg);
  color: var(--text);
  line-height: 1.7;
}

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

a:hover {
  text-decoration: underline;
}

.container {
  width: min(1080px, 92vw);
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(12, 17, 27, 0.92);
  position: sticky;
  top: 0;
  z-index: 4;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.site-title {
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.nav-list {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
  gap: 1rem;
}

.nav-link {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  color: var(--text);
  font-weight: 500;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.nav-link:hover {
  background: rgba(76, 201, 240, 0.08);
  text-decoration: none;
}

.nav-link.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 24px rgba(76, 201, 240, 0.2);
}

.site-content {
  padding: 2rem 0 3rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
  margin: 2rem 0 3rem;
}

.hero-card {
  background: linear-gradient(145deg, rgba(76, 201, 240, 0.12) 0%, rgba(255, 255, 255, 0.02) 100%);
  padding: 2rem;
  border-radius: 18px;
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(4px);
}

.hero-card h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 3vw, 2.6rem);
}

.eyebrow {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  background: rgba(76, 201, 240, 0.14);
  color: var(--accent);
  border-radius: 999px;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.lead {
  font-size: 1.05rem;
  color: var(--muted);
}

.meta-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.tag {
  padding: 0.35rem 0.75rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  color: var(--text);
  font-weight: 600;
  font-size: 0.9rem;
}

.hero-media {
  width: 100%;
  display: flex;
  justify-content: center;
}

.hero-media img {
  width: min(320px, 90%);
  border-radius: 16px;
  border: 10px solid rgba(15, 23, 42, 0.8);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.panel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
}

.panel h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

.panel p {
  margin: 0;
  color: var(--muted);
}

.section-title {
  margin: 0 0 0.75rem;
  font-size: 1.6rem;
}

.section-lead {
  margin: 0 0 1.5rem;
  color: var(--muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

.card ul {
  padding-left: 1.1rem;
  color: var(--muted);
  margin: 0.5rem 0 0;
}

.card li + li {
  margin-top: 0.35rem;
}

.timeline {
  display: grid;
  gap: 1rem;
}

.timeline-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  position: relative;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
}

.timeline-item h3 {
  margin: 0;
}

.timeline-meta {
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.project-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
}

.project-card h4 {
  margin: 0 0 0.35rem;
}

.quote-block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
}

.quote-author {
  margin-top: 0.75rem;
  color: var(--muted);
  font-weight: 600;
}

.book-list {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1rem;
}

.book-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
}

.book-item h4 {
  margin: 0 0 0.35rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0 2rem;
  color: var(--muted);
  background: rgba(12, 17, 27, 0.92);
}

.pill-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.6rem;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  color: var(--text);
  font-weight: 600;
  font-size: 0.9rem;
}

.section-stack {
  display: grid;
  gap: 2rem;
}

@media (max-width: 820px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-media {
    order: -1;
  }

  .header-inner {
    flex-direction: column;
    gap: 0.75rem;
  }

  .nav-list {
    flex-wrap: wrap;
    justify-content: center;
  }
}