:root {
  --bg: #0b1020;
  --panel: #121a2f;
  --text: #eef2ff;
  --muted: #a7b0c5;
  --line: #27324e;
  --accent: #74a7ff;
  --accent-2: #8ee3c2;
  --max: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top right, rgba(116,167,255,.16), transparent 32rem),
    radial-gradient(circle at left 30%, rgba(142,227,194,.09), transparent 26rem),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: rgba(11,16,32,.78);
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.header-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-weight: 800;
  letter-spacing: -.02em;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  color: var(--muted);
  font-size: .95rem;
}

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

.lang {
  display: inline-flex;
  gap: .35rem;
  padding-left: .6rem;
  border-left: 1px solid var(--line);
}

.lang a {
  padding: .2rem .45rem;
  border-radius: 6px;
}

.lang .active {
  background: var(--panel);
  color: var(--text);
}

.hero {
  padding: 7rem 0 5rem;
}

.eyebrow {
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: .78rem;
  font-weight: 800;
}

h1 {
  max-width: 900px;
  margin: .75rem 0 1rem;
  font-size: clamp(2.7rem, 7vw, 5.8rem);
  line-height: .98;
  letter-spacing: -.055em;
}

.hero-copy {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-top: 2rem;
}

.button {
  display: inline-block;
  padding: .78rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  font-weight: 700;
}

.button.primary {
  background: var(--accent);
  color: #081225;
  border-color: var(--accent);
}

section {
  padding: 4rem 0;
  border-top: 1px solid rgba(255,255,255,.06);
}

.section-title {
  margin: 0 0 2rem;
  font-size: clamp(1.8rem, 4vw, 3rem);
  letter-spacing: -.035em;
}

.lead {
  max-width: 800px;
  color: var(--muted);
  font-size: 1.08rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
}

.card {
  grid-column: span 6;
  background: rgba(18,26,47,.82);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.4rem;
}

.card h3 {
  margin: 0 0 .5rem;
  font-size: 1.25rem;
}

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

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1rem;
}

.tag {
  padding: .25rem .55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: .82rem;
}

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

.timeline-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 1.5rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
}

.timeline-item strong {
  color: var(--accent-2);
}

.timeline-item p {
  margin: .25rem 0 0;
  color: var(--muted);
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
}

.skill-list span {
  padding: .55rem .75rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.contact-box {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  background: linear-gradient(135deg, rgba(116,167,255,.18), rgba(142,227,194,.10));
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 2rem;
}

footer {
  padding: 2rem 0 3rem;
  color: var(--muted);
  font-size: .9rem;
}

@media (max-width: 800px) {
  .nav a:not(.lang a) { display: none; }
  .hero { padding-top: 5rem; }
  .card { grid-column: span 12; }
  .timeline-item { grid-template-columns: 1fr; gap: .35rem; }
}

.project-link { color: var(--text); }
.project-link:hover { color: var(--accent); }