/* Walking Speed App overview & privacy styles */
:root {
  --bg: #0b0d10;
  --card: #12151a;
  --text: #e9edf1;
  --muted: #9aa3ad;
  --primary: #5aa9ff;
  --border: #20242c;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: linear-gradient(180deg, #0b0d10 0%, #0f1420 100%);
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 13, 16, 0.85);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-title { margin: 16px 0 4px; font-size: 28px; }
.site-subtitle { margin: 0 0 12px; color: var(--muted); }

.nav { display: flex; gap: 16px; padding-bottom: 14px; flex-wrap: wrap; }
.nav a {
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
}
.nav a:hover { border-color: var(--primary); color: var(--primary); }

main.container { padding: 24px 0 64px; }

.card {
  background: linear-gradient(180deg, rgba(18,21,26,0.95), rgba(16,19,24,0.95));
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 18px;
  margin: 16px 0;
  box-shadow: 0 10px 24px rgba(0,0,0,0.25);
}

h1, h2, h3 { line-height: 1.25; }
h2 { font-size: 22px; margin: 0 0 10px; }
h3 { font-size: 18px; margin: 18px 0 8px; color: var(--primary); }
p { margin: 10px 0; }

.list { margin: 8px 0 0 0; padding-left: 18px; }
.list li { margin: 6px 0; }

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

.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  color: var(--muted);
  text-align: center;
}