/* Velocipede — site styles
 *
 * No web fonts (system stack), no JS, no analytics, no third-party
 * resources. The site loads two files: this stylesheet and one HTML
 * document. Matches the privacy posture of the app itself.
 */

:root {
  --bg: #fafaf7;
  --bg-card: #ffffff;
  --ink: #1a1a1a;
  --ink-soft: #555;
  --ink-mute: #888;
  --rule: #e3e2dd;
  --accent: #2d6a4f;       /* deep green — bike-route vibe */
  --accent-soft: #e9f1ed;
  --pink: #d6336c;         /* heart / support color */
  --max: 760px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15161a;
    --bg-card: #1e1f24;
    --ink: #f1f1ee;
    --ink-soft: #b9b9b5;
    --ink-mute: #888;
    --rule: #2c2d33;
    --accent: #74c69d;
    --accent-soft: #1c2c25;
    --pink: #f06595;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI",
       Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main, header, footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

header {
  padding-top: 64px;
  padding-bottom: 24px;
}

.logo {
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.logo-mark {
  display: inline-block;
  width: 28px; height: 28px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 17px;
  text-align: center;
  line-height: 28px;
  font-weight: 800;
}

nav {
  float: right;
  font-size: 15px;
}
nav a {
  color: var(--ink-soft);
  text-decoration: none;
  margin-left: 18px;
}
nav a:hover { color: var(--ink); }

h1 {
  font-size: 44px;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 32px 0 16px;
}

h2 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 48px 0 12px;
  border-top: 1px solid var(--rule);
  padding-top: 32px;
}
h2:first-of-type { border-top: 0; padding-top: 0; }

h3 {
  font-size: 17px;
  font-weight: 600;
  margin: 24px 0 6px;
}

p, ul, ol {
  margin: 0 0 14px;
}

ul, ol { padding-left: 22px; }

li { margin-bottom: 4px; }

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}
a:hover { text-decoration-thickness: 2px; }

.lede {
  font-size: 21px;
  line-height: 1.45;
  color: var(--ink-soft);
  margin-bottom: 32px;
  max-width: 620px;
}

.tag {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin: 24px 0 8px;
}
@media (max-width: 600px) {
  .feature-grid { grid-template-columns: 1fr; }
}
.feature {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 20px;
}
.feature h3 { margin-top: 0; }
.feature p { margin: 0; color: var(--ink-soft); }

.callout {
  background: var(--accent-soft);
  border-radius: 14px;
  padding: 20px 24px;
  margin: 32px 0;
}
.callout p:last-child { margin-bottom: 0; }

.kbd {
  font: 13px/1 SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background: var(--rule);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--ink);
}

.heart {
  color: var(--pink);
  font-style: normal;
}

.cta {
  display: inline-block;
  background: var(--ink);
  color: var(--bg);
  text-decoration: none;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  margin-top: 8px;
}
.cta:hover { background: var(--accent); }
@media (prefers-color-scheme: dark) {
  .cta { color: var(--ink); background: #fff; }
  .cta:hover { background: var(--accent); color: #fff; }
}

.muted { color: var(--ink-mute); font-size: 14px; }

footer {
  margin-top: 80px;
  padding: 24px 24px 48px;
  border-top: 1px solid var(--rule);
  font-size: 14px;
  color: var(--ink-mute);
}
footer a { color: var(--ink-mute); }
footer a:hover { color: var(--ink); }
footer .left { float: left; }
footer .right { float: right; }
footer::after { content: ""; display: block; clear: both; }

dt {
  font-weight: 600;
  margin-top: 18px;
}
dd {
  margin: 4px 0 0 0;
  color: var(--ink-soft);
}

table.values {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 15px;
}
table.values th, table.values td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
table.values th {
  font-weight: 600;
  color: var(--ink-soft);
  width: 38%;
}

code {
  font: 13px/1.4 SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background: var(--accent-soft);
  padding: 1px 5px;
  border-radius: 4px;
}