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

:root {
  --paper: #F7F7F5;
  --surface: #FFFFFF;
  --ink: #14181C;
  --ink-soft: #5B6570;
  --line: #E3E5E1;
  --accent: #2F4B99;
  --accent-soft: #EEF1FA;
  --radius: 10px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

.wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- nav ---------- */
.site-nav {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(247,247,245,0.92);
  backdrop-filter: blur(6px);
  z-index: 10;
}
.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.2px;
}
.nav-links {
  display: flex;
  gap: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
}
.nav-links a {
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--ink-soft);
}
.nav-links a:hover { color: var(--ink); background: var(--surface); }
.nav-links a.active { color: var(--accent); }

/* ---------- eyebrow (route-style label) ---------- */
.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--accent);
  margin: 0 0 14px;
  display: inline-block;
}

/* ---------- hero ---------- */
.hero {
  padding: 88px 0 56px;
}
.hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 46px;
  line-height: 1.12;
  letter-spacing: -0.8px;
  margin: 0 0 18px;
}
.hero p.lede {
  font-size: 18px;
  color: var(--ink-soft);
  max-width: 560px;
  margin: 0 0 32px;
}

/* signature: connection line with nodes */
.connection-line {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 8px 0 40px;
}
.connection-line .node {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.connection-line .track {
  flex: 1;
  height: 1px;
  background: repeating-linear-gradient(to right, var(--line) 0, var(--line) 4px, transparent 4px, transparent 9px);
}

.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--line);
}
.btn.primary { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn.primary:hover { background: #000; }
.btn.ghost { color: var(--ink); background: var(--surface); }
.btn.ghost:hover { border-color: var(--ink); }

/* ---------- stat row ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 48px 0;
}
.stats div {
  background: var(--surface);
  padding: 20px 22px;
}
.stats .num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 24px;
  font-weight: 600;
}
.stats .label {
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: 4px;
}

/* ---------- section ---------- */
section.block { padding: 48px 0; border-top: 1px solid var(--line); }
section.block:first-of-type { border-top: none; }
h2.section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 24px;
  letter-spacing: -0.3px;
  margin: 0 0 20px;
}

/* ---------- cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
.card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 17px;
  font-weight: 600;
  margin: 0 0 8px;
}
.card p { font-size: 14px; color: var(--ink-soft); margin: 0 0 12px; }
.tag-row { display: flex; gap: 6px; flex-wrap: wrap; }
.tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 20px;
  background: var(--accent-soft);
  color: var(--accent);
}

/* ---------- list rows (blog) ---------- */
.post-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.post-row:first-child { padding-top: 0; }
.post-row h3 { font-size: 16px; font-weight: 500; margin: 0; font-family: 'Inter', sans-serif; }
.post-row .date { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--ink-soft); white-space: nowrap; margin-left: 16px; }
.post-row p { margin: 6px 0 0; font-size: 14px; color: var(--ink-soft); }

/* ---------- timeline (about) ---------- */
.tl-item { padding: 18px 0; border-bottom: 1px solid var(--line); }
.tl-item:last-child { border-bottom: none; }
.tl-item .when { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--accent); }
.tl-item h3 { font-size: 16px; font-weight: 500; margin: 4px 0 4px; }
.tl-item p { font-size: 14px; color: var(--ink-soft); margin: 0; }

/* ---------- skills ---------- */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.skill-grid div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 13px;
  background: var(--surface);
}

/* ---------- contact ---------- */
.contact-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
}
.contact-row { display: flex; justify-content: space-between; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.contact-row:last-child { border-bottom: none; }
.contact-row span.k { color: var(--ink-soft); font-family: 'JetBrains Mono', monospace; font-size: 12px; }
.contact-row a.v { color: var(--accent); font-weight: 500; }

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 48px;
  margin-top: 40px;
}
footer .wrap { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--ink-soft); }
footer .wrap a { color: var(--ink-soft); }
footer .wrap a:hover { color: var(--accent); }

/* ---------- responsive ---------- */
@media (max-width: 640px) {
  .hero h1 { font-size: 32px; }
  .stats { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr; }
  .skill-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { font-size: 11px; }
  .nav-links a { padding: 6px 8px; }
}

/* ---------- reveal-on-scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- connection line draw-in ---------- */
.connection-line .track {
  position: relative;
  overflow: hidden;
}
.connection-line .track::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--paper);
  transform-origin: right;
  transform: scaleX(1);
  transition: transform 1.1s cubic-bezier(0.4, 0, 0.2, 1) 0.2s;
}
.connection-line.drawn .track::after { transform: scaleX(0); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .connection-line .track::after { transition: none; transform: scaleX(0); }
}

/* ---------- coming soon ---------- */
.coming-soon {
  text-align: center;
  padding: 64px 20px 88px;
  color: var(--ink-soft);
}
.coming-soon .mark {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line);
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
}
.coming-soon h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 8px;
}
.coming-soon p { font-size: 14px; max-width: 360px; margin: 0 auto; }

/* ---------- tablet breakpoint ---------- */
@media (max-width: 900px) {
  .hero { padding: 64px 0 40px; }
  .hero h1 { font-size: clamp(28px, 5vw, 40px); }
}

/* ---------- refined mobile ---------- */
@media (max-width: 640px) {
  .wrap { padding: 0 20px; }
  .site-nav .wrap { height: 56px; }
  .brand { font-size: 15px; }
  .nav-links { gap: 0; }
  .nav-links a { padding: 6px 7px; font-size: 11px; }
  .hero h1 { font-size: 30px; letter-spacing: -0.4px; }
  .hero p.lede { font-size: 16px; }
  .cta-row { flex-direction: column; }
  .cta-row .btn { text-align: center; }
}