/* DevKeys site — one stylesheet, no external requests. */

:root {
  --bg: #ffffff;
  --bg-raised: #f6f7f9;
  --bg-key: #ffffff;
  --text: #16181d;
  --text-dim: #5c626e;
  --text-faint: #878d99;
  --line: #e3e6ea;
  --accent: #2f6df6;
  --key-shadow: rgba(20, 24, 32, 0.16);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1013;
    --bg-raised: #16191f;
    --bg-key: #242932;
    --text: #eef0f4;
    --text-dim: #a3aab8;
    --text-faint: #737b8a;
    --line: #262b34;
    --accent: #6f9bff;
    --key-shadow: rgba(0, 0, 0, 0.5);
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

header.site {
  border-bottom: 1px solid var(--line);
  padding: 1.1rem 0;
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 650;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
}

.brand .glyph {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--bg-key);
  border: 1px solid var(--line);
  border-radius: 7px;
  box-shadow: 0 1.5px 0 var(--key-shadow);
  padding: 0.15rem 0.45rem;
  line-height: 1.35;
}

nav.site {
  display: flex;
  gap: 1.35rem;
  font-size: 0.94rem;
}

nav.site a {
  color: var(--text-dim);
  text-decoration: none;
}

nav.site a:hover,
nav.site a[aria-current="page"] { color: var(--text); }

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

.hero {
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--line);
}

.hero h1 {
  font-size: clamp(2.1rem, 6vw, 3.1rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  font-weight: 700;
}

.hero p.lede {
  font-size: 1.2rem;
  color: var(--text-dim);
  margin: 0 0 2rem;
  max-width: 34rem;
}

.status {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--text-dim);
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
}

/* ---- keycap strip ---- */

.keys {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 2rem;
  padding: 0;
  list-style: none;
}

.keys li {
  font-family: var(--mono);
  font-size: 0.9rem;
  background: var(--bg-key);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 2px 0 var(--key-shadow);
  padding: 0.35rem 0.7rem;
  color: var(--text-dim);
}

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

section { padding: 3rem 0; border-bottom: 1px solid var(--line); }

section:last-of-type { border-bottom: 0; }

h2 {
  font-size: 1.35rem;
  letter-spacing: -0.015em;
  margin: 0 0 1.5rem;
  font-weight: 650;
}

h3 {
  font-size: 1.02rem;
  margin: 2rem 0 0.5rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1rem; }

a { color: var(--accent); }

/* ---- mode list ---- */

.modes { display: grid; gap: 1.4rem; }

.mode {
  display: grid;
  grid-template-columns: 3.4rem 1fr;
  gap: 1rem;
  align-items: start;
}

.mode .tag {
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 600;
  text-align: center;
  background: var(--bg-key);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 2px 0 var(--key-shadow);
  padding: 0.3rem 0;
  color: var(--text);
}

.mode h3 { margin: 0 0 0.2rem; font-size: 1rem; }

.mode p { margin: 0; color: var(--text-dim); font-size: 0.97rem; }

/* ---- feature list ---- */

ul.plain { margin: 0 0 1rem; padding-left: 1.15rem; color: var(--text-dim); }
ul.plain li { margin-bottom: 0.4rem; }

/* ---- callout ---- */

.callout {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.4rem 1.5rem;
}

.callout p:last-child { margin-bottom: 0; }

code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 0.08em 0.35em;
}

/* ---- legal pages ---- */

.legal { padding: 3rem 0 4rem; }

.legal h1 {
  font-size: clamp(1.7rem, 4.5vw, 2.2rem);
  letter-spacing: -0.025em;
  margin: 0 0 0.4rem;
}

.legal .updated {
  color: var(--text-faint);
  font-size: 0.9rem;
  font-family: var(--mono);
  margin: 0 0 2.5rem;
}

.legal h2 {
  font-size: 1.15rem;
  margin: 2.75rem 0 0.75rem;
  padding-top: 0.25rem;
}

.legal p, .legal li { color: var(--text-dim); }

.legal strong { color: var(--text); font-weight: 600; }

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

footer.site {
  border-top: 1px solid var(--line);
  padding: 2rem 0 3rem;
  color: var(--text-faint);
  font-size: 0.89rem;
}

footer.site .wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

footer.site a { color: var(--text-dim); text-decoration: none; }
footer.site a:hover { color: var(--text); }

footer.site nav { display: flex; gap: 1.25rem; }

@media (max-width: 480px) {
  body { font-size: 16px; }
  .hero { padding: 3rem 0 2.5rem; }
  .mode { grid-template-columns: 1fr; gap: 0.4rem; }
  .mode .tag { justify-self: start; padding: 0.25rem 0.7rem; }
}