:root {
  --bg: #0b1020;
  --bg-muted: #11162a;
  --text: #e6e9f2;
  --text-muted: #aeb6cf;
  --brand: #6ea8fe;
  --brand-2: #a78bfa;
  --ring: rgba(110,168,254,.5);
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}
.light {
  --bg: #f7f8fc;
  --bg-muted: #ffffff;
  --text: #0f172a;
  --text-muted: #475569;
  --brand: #2563eb;
  --brand-2: #7c3aed;
  --ring: rgba(37,99,235,.22);
  --shadow: 0 10px 30px rgba(2,6,23,.08);
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica Neue, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(78,93,248,.18), transparent),
    radial-gradient(900px 500px at 110% 10%, rgba(167,139,250,.18), transparent),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.container { max-width: 1000px; margin: 0 auto; padding: 24px; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(140%) blur(10px);
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  border-bottom: 1px solid color-mix(in oklab, var(--text) 15%, transparent);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 10px 0; }
.brand { font-weight: 700; letter-spacing: .2px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 14px; border-radius: 999px; border: 1px solid transparent;
  background: linear-gradient(180deg, color-mix(in oklab, var(--brand) 92%, white 8%), color-mix(in oklab, var(--brand) 70%, black 30%));
  color: white; font-weight: 600; box-shadow: var(--shadow);
}
.btn:focus-visible { outline: 3px solid var(--ring); outline-offset: 3px; }
.btn.btn-secondary {
  background: var(--bg-muted); color: var(--text);
  border-color: color-mix(in oklab, var(--text) 18%, transparent);
}

/* Layout helpers */
.row { display: flex; gap: 10px; flex-wrap: wrap; }
.grid { display: grid; gap: 16px; }
.grid.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
@media (max-width: 900px) { .grid.grid-3, .grid.grid-2 { grid-template-columns: 1fr; } }

/* Hero */
.hero { padding: 64px 0 28px; display: grid; grid-template-columns: 1.2fr .8fr; gap: 28px; align-items: center; }
@media (max-width: 900px) { .hero { grid-template-columns: 1fr; } }
.hero h1 { font-size: clamp(28px, 5vw, 48px); line-height: 1.1; margin: 0 0 10px; }
.hero .muted { color: var(--text-muted); }
.pill { display:inline-block; padding:6px 10px; border-radius:999px; font-size:12.5px; letter-spacing:.2px; background: color-mix(in oklab, var(--brand) 16%, transparent); color: color-mix(in oklab, var(--brand) 95%, white 5%); }

/* Cards */
.card {
  background: linear-gradient(180deg, color-mix(in oklab, var(--bg-muted) 90%, white 10%), var(--bg-muted));
  border: 1px solid color-mix(in oklab, var(--text) 15%, transparent);
  border-radius: 14px; padding: 18px; box-shadow: var(--shadow);
}
.project-card { transition: transform .18s ease, box-shadow .18s ease; }
.project-card:hover { transform: translateY(-4px); box-shadow: 0 16px 34px rgba(0,0,0,.25); }

/* Sections */
h2 { font-size: clamp(20px, 3vw, 28px); margin: 0 0 14px; }
.lead { color: var(--text-muted); margin: 6px 0 0; }
.muted { color: var(--text-muted); }

/* Footer */
.site-footer { border-top: 1px solid color-mix(in oklab, var(--text) 15%, transparent); color: var(--text-muted); }
.footer-inner { display:flex; align-items:center; justify-content:space-between; padding:20px 0; }

/* A11y */
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }
/* ===== Spacing & type overrides (appended) ===== */
body { line-height: 1.7; }
.container { padding: 32px; }
section { margin: 56px 0; }
.grid { gap: 24px; }
.row { gap: 12px; }
.card { padding: 24px; }
.hero { padding: 84px 0 40px; gap: 36px; }
h1 { margin-bottom: 14px; }
h2 { margin-bottom: 18px; }
.lead { margin-top: 8px; }
@media (max-width: 900px) {
  .container { padding: 20px; }
  section { margin: 44px 0; }
  .card { padding: 20px; }
  .hero { padding: 64px 0 28px; gap: 24px; }
}
/* badges */
.badge {
  display:inline-block; padding:4px 10px; border-radius:999px;
  background: color-mix(in oklab, var(--brand) 16%, transparent);
  color: color-mix(in oklab, var(--brand) 95%, white 5%);
  margin-right:6px; margin-bottom:6px; font-size:.9rem;
}
/* badges */
.badge {
  display:inline-block;
  padding:4px 10px;
  border-radius:999px;
  background: color-mix(in oklab, var(--brand) 16%, transparent);
  color: color-mix(in oklab, var(--brand) 95%, white 5%);
  margin-right:6px;
  margin-bottom:6px;
  font-size:.9rem;
}