/* One stylesheet. Tokens first; dark mode redefines the tokens, nothing else. */
:root {
  --bg: #ffffff;
  --surface: #f6f7f9;
  --surface-2: #eceff4;
  --ink: #15181d;
  --ink-2: #4f5a67;
  --line: #dfe3ea;
  --accent: #1f4fbf;
  --accent-ink: #ffffff;
  --accent-soft: #e8eefc;
  --good: #1c7c54;
  --radius: 12px;
  --sans: "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --measure: 68ch;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12141a;
    --surface: #1a1d25;
    --surface-2: #232733;
    --ink: #e8eaf0;
    --ink-2: #a3adbb;
    --line: #2c3140;
    --accent: #8fb0ff;
    --accent-ink: #0d1330;
    --accent-soft: #1e2944;
    --good: #6fd3a1;
  }
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1.0625rem/1.65 var(--sans);
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); }
a:focus-visible, .btn:focus-visible, .card:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 0.5em; }
h1 { font-size: clamp(2rem, 1.3rem + 3vw, 3.1rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 700; }
p { margin: 0 0 1em; }

.wrap { width: min(1080px, 100% - 32px); margin-inline: auto; }
.section { padding-block: clamp(48px, 7vw, 88px) 0; }
.muted { color: var(--ink-2); }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}
.skip {
  position: absolute; left: 16px; top: -48px; padding: 8px 12px;
  background: var(--accent); color: var(--accent-ink); border-radius: 8px; z-index: 10;
}
.skip:focus { top: 12px; }

/* header / footer */
.site-header {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 60px; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
nav { display: flex; gap: 4px; flex-wrap: wrap; }
nav a {
  color: var(--ink-2); text-decoration: none; font-size: 0.95rem;
  padding: 6px 10px; border-radius: 8px;
}
nav a:hover, nav a[aria-current="page"] { color: var(--ink); background: var(--surface); }
@media (max-width: 560px) {
  .header-row { padding-block: 8px; }
  nav { width: 100%; justify-content: space-between; gap: 0; }
  nav a { padding: 6px 6px; font-size: 0.9rem; }
}

.site-footer { margin-top: clamp(56px, 8vw, 96px); border-top: 1px solid var(--line); padding-block: 28px; font-size: 0.92rem; }
.footer-row { display: flex; justify-content: space-between; gap: 8px 24px; flex-wrap: wrap; }
.footer-row p { margin: 0; }

/* hero */
.hero { padding-block: clamp(48px, 9vw, 112px) clamp(32px, 5vw, 56px); }
.hero h1 { max-width: 24ch; }
.eyebrow {
  font: 500 0.8rem/1.4 var(--mono); text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--ink-2); margin-bottom: 14px;
}
.eyebrow a { color: inherit; }
.lede { font-size: clamp(1.1rem, 1rem + 0.45vw, 1.3rem); color: var(--ink-2); max-width: var(--measure); }

.actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 24px 0 8px; }
.btn {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 18px;
  border: 1px solid var(--line); border-radius: 999px; background: var(--bg);
  color: var(--ink); font-weight: 500; text-decoration: none;
  transition: border-color 0.15s, background 0.15s;
}
.btn:hover { border-color: var(--ink-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); }

/* stats */
.stats {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px;
}
.stats li {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; display: flex; flex-direction: column; gap: 4px;
}
.stat-value { font: 700 clamp(1.7rem, 1.3rem + 1.4vw, 2.3rem)/1.1 var(--sans); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.stat-label { color: var(--ink-2); font-size: 0.95rem; line-height: 1.4; }
.stats.compact { margin: 8px 0 24px; }
.stats.compact .stat-value { font-size: 1.6rem; }

/* cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; margin-top: 8px; }
.card {
  display: flex; flex-direction: column; padding: 24px; border: 1px solid var(--line);
  border-radius: var(--radius); background: var(--bg); color: var(--ink); text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
@media (prefers-reduced-motion: reduce) { .card:hover { transform: none; } }
.card h3 { font-size: 1.25rem; }
.card p { color: var(--ink-2); }
.card-tag { font: 500 0.78rem/1.4 var(--mono); color: var(--ink-2); margin-bottom: 10px; }
.card-more { margin-top: auto; color: var(--accent); font-weight: 500; }
.card-more::after { content: " →"; }

/* timeline */
.timeline { list-style: none; padding: 0; margin: 8px 0 20px; }
.timeline li {
  display: grid; grid-template-columns: 130px 1fr; gap: 8px 24px;
  padding: 20px 0; border-top: 1px solid var(--line);
}
.timeline li:last-child { border-bottom: 1px solid var(--line); }
.timeline h3 { margin-bottom: 6px; }
.timeline p { color: var(--ink-2); margin: 0; max-width: var(--measure); }
.when { font: 500 0.88rem/1.6 var(--mono); color: var(--ink-2); white-space: nowrap; }
@media (max-width: 640px) { .timeline li { grid-template-columns: 1fr; } }

.text-link { font-weight: 500; }

/* skills */
.skill-groups { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px 32px; margin-top: 8px; }
.skill-groups h3 { font-size: 1rem; margin-bottom: 10px; }
.chips { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li {
  padding: 5px 12px; border-radius: 999px; background: var(--accent-soft);
  color: var(--ink); font-size: 0.9rem;
}

.contact { padding-bottom: 8px; }

/* long-form pages */
.prose { padding-top: clamp(40px, 7vw, 80px); }
.prose > h1, .prose > .lede { max-width: 30ch; }
.prose > .lede { max-width: var(--measure); }
.prose h2 { margin-top: 1.8em; }
.prose h3 { margin-top: 1.4em; }
.prose p, .prose ul { max-width: var(--measure); }
.prose ul:not(.stats) { padding-left: 1.2em; }
.prose li { margin-bottom: 0.45em; }
.facts {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px 24px;
  margin: 28px 0 8px; padding: 18px 20px; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius);
}
.facts dt { font: 500 0.78rem/1.4 var(--mono); text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-2); }
.facts dd { margin: 2px 0 0; }
.next { margin-top: 2.4em; padding-top: 1.2em; border-top: 1px solid var(--line); }

/* resume page */
.resume h2 { font-size: 1.35rem; border-bottom: 1px solid var(--line); padding-bottom: 6px; }
.resume h3 { font-size: 1.08rem; margin-bottom: 0.2em; }
.resume h3 + p { color: var(--ink-2); }

@media print {
  .site-header, .site-footer, .actions, .skip { display: none; }
  body { font-size: 11pt; }
  a { color: inherit; }
}

/* "How I work": four short pillars. */
.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 12px;
  margin: 8px 0 16px;
}
.pillar {
  padding: 20px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
}
.pillar h3 { font-size: 1.05rem; }
.pillar p { color: var(--ink-2); margin: 0; font-size: 0.98rem; }
@media (min-width: 720px) { .cards { grid-template-columns: repeat(2, 1fr); } }