/* plusplus.fit — "Quiet Arcade" (2026-07 refresh of the v3 "ink ×
   increment green" system): warm charcoal dark, raised-key buttons
   that depress onto a fixed base plate. Green is data, never chrome;
   blue is selected-state only (nothing on a static page selects, so
   no blue here). Values mirror the app's Theme.swift. */

:root {
  --bg: #201f1d;
  --surface: #2a2925;
  --surface-raised: #34322d;
  --border: #3d3b35;
  --border-strong: #4e4b43;
  --text: #f0ede6;
  --text-2: #9d9b96;
  --text-3: #5f5d59;
  --green: #46d17c;
  --notes: #cfa14a;
  --ink-fill: #f0ede6;
  --on-ink: #161616;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --surface: #f4f3f1;
    --surface-raised: #eae8e4;
    --border: #dddbd7;
    --border-strong: #c2c0ba;
    --text: #232220;
    --text-2: #6b6965;
    --text-3: #999691;
    --green: #17914b;
    --notes: #9a6700;
    --ink-fill: #232220;
    --on-ink: #ffffff;
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.mono { font-family: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace; }

main { max-width: 720px; margin: 0 auto; padding: 0 24px 96px; }

header.site {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mark {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-weight: 700;
  font-size: 20px;
  color: var(--green);
  text-decoration: none;
}

nav a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 14px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  margin-left: 18px;
}
nav a:hover { color: var(--text); }

.hero { padding-top: 96px; }

.hero h1 {
  font-size: 44px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.hero h1 .inc { color: var(--green); }

.hero p.sub {
  margin-top: 18px;
  font-size: 19px;
  color: var(--text-2);
  max-width: 560px;
}

.cta-row { margin-top: 32px; display: flex; gap: 12px; flex-wrap: wrap; }

/* Raised keys (Quiet Arcade): the cap sits 4px proud of a fixed base
   plate (the box-shadow); pressing sinks the cap onto it — the plate's
   bottom edge never moves. */
.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 11px;
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  margin-bottom: 4px;
  transition: transform 0.06s ease-out, box-shadow 0.06s ease-out;
}
.btn:active { transform: translateY(4px); box-shadow: none !important; }
.btn.primary {
  background: var(--ink-fill);
  color: var(--on-ink);
  box-shadow: 0 4px 0 0 var(--border-strong);
}
.btn.ghost {
  background: var(--bg);
  border: 1px solid var(--border-strong);
  color: var(--text);
  box-shadow: 0 4px 0 0 var(--border);
}

.caption {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12.5px;
  color: var(--text-3);
}

section { margin-top: 88px; }

section h2 {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-2);
  margin-bottom: 20px;
}

.feature {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 12px;
}

.feature h3 { font-size: 16px; margin-bottom: 6px; }
.feature p { font-size: 15px; color: var(--text-2); }
.feature .up { color: var(--green); font-family: ui-monospace, Menlo, monospace; font-weight: 600; }
/* "new" is data (the v4 call, kept by Quiet Arcade): green, not blue. */
.feature .new { color: var(--green); font-family: ui-monospace, Menlo, monospace; font-weight: 600; }

pre.term {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px;
  overflow-x: auto;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-2);
}
pre.term .g { color: var(--green); }
pre.term .t { color: var(--text); }
pre.term .f { color: var(--text-3); }

footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px;
  border-top: 1px solid var(--border);
  color: var(--text-3);
  font-size: 13px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
footer a { color: var(--text-2); text-decoration: none; }

article.doc h1 { font-size: 32px; margin: 72px 0 12px; letter-spacing: -0.01em; }
article.doc h2 { margin-top: 44px; margin-bottom: 12px; font-size: 15px; letter-spacing: 0.06em; }
article.doc p { color: var(--text-2); margin: 12px 0; }
article.doc p strong, article.doc li strong { color: var(--text); }
article.doc ul { margin: 12px 0 12px 22px; color: var(--text-2); }
article.doc li { margin: 6px 0; }
article.doc code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.88em;
  background: var(--surface-raised);
  border-radius: 5px;
  padding: 1.5px 5px;
}
article.doc a { color: var(--text); }