:root {
  color-scheme: light;
  --bg: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --accent: #2563eb;
  --accent-soft: #eff6ff;
  --surface: #f8fafc;
  --shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0 0 12px;
}

p {
  margin: 0 0 16px;
  color: var(--muted);
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.2rem;
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 24px;
  font-weight: 500;
  color: var(--muted);
}

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

.hero {
  padding: 90px 0 70px;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 36px;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.2rem;
  color: var(--accent);
  margin-bottom: 12px;
}

.lead {
  font-size: 1.1rem;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
}

.button.primary {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow);
}

.button.ghost {
  border-color: var(--border);
  color: var(--text);
  background: #fff;
}

.section {
  padding: 80px 0;
}

.section.muted {
  background: var(--surface);
}

.section-head {
  margin-bottom: 32px;
}

.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
  align-items: start;
}

.card {
  padding: 28px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: #fff;
  box-shadow: var(--shadow);
}

.card.highlight {
  background: var(--accent-soft);
  border-color: transparent;
}

.card-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.2rem;
  color: var(--accent);
  margin-bottom: 12px;
}

.list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.grid.three {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.project h3 {
  margin-bottom: 10px;
}

.tag {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
}

.timeline {
  display: grid;
  gap: 24px;
}

.timeline-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.timeline-item:last-child {
  border-bottom: none;
}

.muted-text {
  color: var(--muted);
  font-size: 0.95rem;
}

.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}

.skill-grid span {
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #fff;
  font-weight: 500;
}

.contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
  align-items: center;
}

.contact-link {
  display: inline-block;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
  margin-bottom: 16px;
}

.meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.9rem;
  color: var(--muted);
}

.site-footer {
  padding: 40px 0 60px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 720px) {
  .nav {
    flex-direction: column;
    gap: 16px;
  }

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

  .hero {
    padding-top: 70px;
  }
}