:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --fg: #14161a;
  --fg-muted: #5c6470;
  --line: #e3e6ea;
  --accent: #1f6feb;
  --pill-live-bg: #e7f5ec;
  --pill-live-fg: #16653b;
  --pill-code-bg: #eef0f3;
  --pill-code-fg: #4a525e;
  --max: 62rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1014;
    --bg-soft: #141920;
    --fg: #e8ecf2;
    --fg-muted: #98a2b0;
    --line: #232a33;
    --accent: #6ea8ff;
    --pill-live-bg: #10301f;
    --pill-live-fg: #7ee0a8;
    --pill-code-bg: #1b222b;
    --pill-code-fg: #97a2b1;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  font-feature-settings: "kern", "liga";
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1.5rem; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- header ---------- */

.site-head {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(8px);
  z-index: 10;
}

.site-head .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 3.75rem;
}

.brand { color: var(--fg); font-weight: 600; letter-spacing: -0.01em; }
.brand:hover { text-decoration: none; }

.site-head nav { display: flex; gap: 1.5rem; font-size: 0.95rem; }
.site-head nav a { color: var(--fg-muted); }
.site-head nav a:hover { color: var(--fg); text-decoration: none; }

/* ---------- hero ---------- */

.hero { padding: 5.5rem 0 4rem; border-bottom: 1px solid var(--line); }

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin: 0 0 1.25rem;
}

.hero .lede {
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  color: var(--fg-muted);
  max-width: 40rem;
  margin: 0 0 2rem;
}

.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.btn {
  display: inline-block;
  padding: 0.6rem 1.15rem;
  border-radius: 0.5rem;
  border: 1px solid var(--line);
  color: var(--fg);
  font-size: 0.95rem;
  font-weight: 500;
}
.btn:hover { border-color: var(--fg-muted); text-decoration: none; }
.btn-primary { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.btn-primary:hover { opacity: 0.88; }

/* ---------- sections ---------- */

section { padding: 4rem 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: 0; }

h2 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--fg-muted);
  font-weight: 600;
  margin: 0 0 1.75rem;
}

.prose { max-width: 42rem; }
.prose p { margin: 0 0 1.1rem; }
.prose p:last-child { margin-bottom: 0; }

.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.75rem;
  font: 500 0.85rem/1 ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}
.stack span {
  padding: 0.4rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  color: var(--fg-muted);
}

/* ---------- project cards ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
  gap: 1rem;
}

.card {
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  padding: 1.4rem;
  background: var(--bg-soft);
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.card h3 { margin: 0; font-size: 1.1rem; letter-spacing: -0.01em; }
.card h3 a { color: var(--fg); }
.card p { margin: 0; color: var(--fg-muted); font-size: 0.95rem; flex: 1; }

.meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font: 500 0.75rem/1.55 ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

.pill { padding: 0.32rem 0.55rem; border-radius: 0.35rem; }
.pill-live { background: var(--pill-live-bg); color: var(--pill-live-fg); }
.pill-code { background: var(--pill-code-bg); color: var(--pill-code-fg); }
.tech { color: var(--fg-muted); }

.card-links { display: flex; gap: 1rem; font-size: 0.9rem; }

/* ---------- footer ---------- */

footer {
  padding: 3rem 0 4rem;
  color: var(--fg-muted);
  font-size: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  justify-content: space-between;
}
footer nav { display: flex; gap: 1.25rem; }

@media (max-width: 34rem) {
  .hero { padding: 3.5rem 0 2.75rem; }
  section { padding: 3rem 0; }
  .site-head nav { gap: 1rem; }
}