/* Content page styling — dark theme that matches the marketing homepage.
   Used by /how-it-works, /for-athletes, /science, /integrations and the
   per-wearable integration pages. Kept in a single file so all content
   pages pick up typography + palette updates at once. */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg: #000;
  --bg-soft: rgba(255, 255, 255, 0.03);
  --bg-softer: rgba(255, 255, 255, 0.05);
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.2);
  --fg: #ffffff;
  --fg-muted: rgba(255, 255, 255, 0.7);
  --fg-dim: rgba(255, 255, 255, 0.55);
  --brand: #FFD100;
  --brand-2: #FFA500;
  --brand-ink: #0a0a0a;
  --link: #FFD100;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

a { color: var(--link); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.8; text-decoration: none; }

/* ---------- Header ---------- */

.content-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.content-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  gap: 16px;
}
.content-header .logo {
  font-weight: 800;
  font-size: 22px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.01em;
}
.content-header nav {
  display: flex;
  gap: 28px;
  align-items: center;
  font-size: 14px;
  font-weight: 500;
}
.content-header nav a {
  color: var(--fg-muted);
  font-weight: 500;
}
.content-header nav a:hover { color: var(--brand); opacity: 1; }
.content-header nav a.cta {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
  color: var(--brand-ink);
  padding: 9px 18px;
  border-radius: 10px;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(255, 209, 0, 0.25);
}
.content-header nav a.cta:hover { opacity: 0.95; color: var(--brand-ink); }

/* ---------- Layout ---------- */

main.content {
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 24px 96px;
  position: relative;
}

/* Subtle radial glow behind the hero like the marketing page. */
main.content::before {
  content: "";
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 720px;
  height: 320px;
  background: radial-gradient(ellipse at center, rgba(255, 209, 0, 0.08) 0%, rgba(255, 209, 0, 0) 70%);
  pointer-events: none;
  z-index: -1;
}

main.content .breadcrumb {
  font-size: 13px;
  color: var(--fg-dim);
  margin-bottom: 28px;
  letter-spacing: 0.01em;
}
main.content .breadcrumb a {
  color: var(--fg-dim);
}
main.content .breadcrumb a:hover { color: var(--brand); }

/* ---------- Typography ---------- */

main.content h1 {
  font-size: 48px;
  line-height: 1.1;
  margin: 0 0 20px;
  letter-spacing: -0.025em;
  font-weight: 800;
  background: linear-gradient(180deg, #ffffff 0%, rgba(255, 255, 255, 0.7) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
main.content h2 {
  font-size: 28px;
  line-height: 1.25;
  margin: 56px 0 14px;
  letter-spacing: -0.015em;
  font-weight: 700;
  color: var(--fg);
}
main.content h3 {
  font-size: 19px;
  margin: 36px 0 10px;
  font-weight: 600;
  color: var(--fg);
}
main.content .lede {
  font-size: 19px;
  color: var(--fg-muted);
  margin: 0 0 40px;
  line-height: 1.55;
}
main.content p { margin: 0 0 16px; color: var(--fg-muted); }
main.content p strong, main.content li strong { color: var(--fg); font-weight: 600; }
main.content ul, main.content ol { padding-left: 26px; margin: 0 0 20px; }
main.content li { margin: 8px 0; color: var(--fg-muted); }
main.content li::marker { color: var(--brand); }

main.content em { color: var(--fg); font-style: italic; }

/* ---------- Tables ---------- */

main.content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 28px;
  font-size: 14px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
main.content th, main.content td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  color: var(--fg-muted);
}
main.content tbody tr:last-child th,
main.content tbody tr:last-child td { border-bottom: none; }
main.content th {
  background: rgba(255, 209, 0, 0.06);
  color: var(--fg);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
main.content td strong { color: var(--fg); }

/* ---------- Code ---------- */

main.content code {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  padding: 2px 7px;
  border-radius: 6px;
  color: var(--brand);
}
main.content pre {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  padding: 18px 20px;
  border-radius: 12px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
  margin: 20px 0 28px;
  color: var(--fg-muted);
}
main.content pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: inherit;
}

/* ---------- Blockquote ---------- */

main.content blockquote {
  margin: 24px 0;
  padding: 20px 24px;
  border-left: 3px solid var(--brand);
  background: linear-gradient(90deg, rgba(255, 209, 0, 0.06) 0%, rgba(255, 209, 0, 0) 100%);
  border-radius: 8px;
  color: var(--fg);
}
main.content blockquote p { color: var(--fg); }
main.content blockquote p:last-child { margin-bottom: 0; }
main.content blockquote strong { color: var(--brand); }

/* ---------- CTA box + tiles ---------- */

.cta-box {
  margin: 56px 0 0;
  padding: 36px;
  background: linear-gradient(135deg, rgba(255, 209, 0, 0.08) 0%, rgba(255, 165, 0, 0.03) 100%);
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  text-align: center;
}
.cta-box h3 {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 700;
  color: var(--fg);
}
.cta-box p { color: var(--fg-muted); margin-bottom: 18px; }
.cta-box .btn {
  display: inline-block;
  margin-top: 6px;
  padding: 14px 28px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
  color: var(--brand-ink);
  font-weight: 700;
  font-size: 15px;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(255, 209, 0, 0.3);
  transition: transform 0.2s, box-shadow 0.2s;
}
.cta-box .btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 32px rgba(255, 209, 0, 0.4);
  color: var(--brand-ink);
  opacity: 1;
}

.tile-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin: 28px 0 16px;
}
.tile {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 22px 20px;
  display: block;
  color: inherit;
  background: var(--bg-soft);
  transition: border-color 0.2s, transform 0.2s, background 0.2s;
}
.tile:hover {
  border-color: var(--brand);
  background: var(--bg-softer);
  transform: translateY(-2px);
  text-decoration: none;
  opacity: 1;
}
.tile h3 { margin: 0 0 8px; font-size: 17px; color: var(--fg); font-weight: 600; }
.tile p { margin: 0; color: var(--fg-muted); font-size: 14px; }

/* ---------- Footer ---------- */

footer.content-footer {
  border-top: 1px solid var(--border);
  padding: 36px 24px;
  text-align: center;
  color: var(--fg-dim);
  font-size: 13px;
}
footer.content-footer a { color: var(--fg-dim); }
footer.content-footer a:hover { color: var(--brand); }

/* ---------- Mobile ---------- */

@media (max-width: 640px) {
  main.content { padding: 40px 20px 72px; }
  main.content h1 { font-size: 36px; }
  main.content h2 { font-size: 24px; margin-top: 44px; }
  main.content .lede { font-size: 17px; }

  .content-header-inner { padding: 14px 18px; }
  .content-header nav { gap: 14px; font-size: 13px; }
  .content-header nav a:not(.cta) { display: none; }
  .content-header .logo { font-size: 19px; }

  .cta-box { padding: 28px 22px; }
  main.content table { font-size: 13px; }
  main.content th, main.content td { padding: 10px 12px; }
}