/* Treadmill Tracker — marketing + legal site. Self-contained, no external deps. */

:root {
  --ink: #0b0b0f;
  --ink-2: #101828;
  --muted: #5b6472;
  --muted-2: #8a93a3;
  --bg: #ffffff;
  --border: #ececf1;
  --card: #ffffff;
  --brand: #ff5cb8;
  --brand-soft: rgba(255, 92, 184, 0.1);
  --grad: linear-gradient(135deg, #ff7a5c 0%, #ff5cb8 50%, #c94dff 100%);
  --radius: 20px;
  --radius-sm: 14px;
  --shadow: 0 10px 40px rgba(16, 24, 40, 0.08);
  --shadow-sm: 0 4px 18px rgba(16, 24, 40, 0.06);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display",
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink-2);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 3px solid rgba(255, 92, 184, 0.5);
  outline-offset: 2px;
  border-radius: 6px;
}

.container { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.reading { max-width: 720px; }

/* ── Header ─────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.wordmark:hover { text-decoration: none; }
.wordmark .dot {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: var(--grad);
  box-shadow: 0 4px 14px rgba(255, 92, 184, 0.4);
}
.wordmark .accent {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.header-nav { display: flex; gap: 22px; align-items: center; }
.header-nav a { color: var(--muted); font-size: 15px; font-weight: 500; }
.header-nav a:hover { color: var(--ink); text-decoration: none; }
@media (max-width: 620px) { .header-nav { display: none; } }

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 16px;
  padding: 14px 26px;
  border-radius: 999px;
  border: 0;
  cursor: pointer;
}
.btn-primary {
  color: #fff;
  background: var(--grad);
  box-shadow: 0 10px 30px rgba(255, 92, 184, 0.35);
}
.btn-primary:hover { text-decoration: none; filter: brightness(1.03); transform: translateY(-1px); }
.btn-ghost {
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--border);
}
.btn-ghost:hover { text-decoration: none; border-color: #d9d9e3; }

/* ── Hero ───────────────────────────────────────────────── */
.hero { padding: 96px 0 72px; text-align: center; position: relative; overflow: hidden; }
.hero::before {
  content: "";
  position: absolute;
  inset: -40% 0 auto 0;
  height: 520px;
  background: radial-gradient(600px 300px at 50% 0%, rgba(255, 92, 184, 0.12), transparent 70%);
  pointer-events: none;
}
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand);
  background: var(--brand-soft);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(38px, 7vw, 68px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 20px;
  color: var(--ink);
  font-weight: 800;
}
.hero h1 .accent {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p.lead {
  font-size: clamp(18px, 2.4vw, 22px);
  color: var(--muted);
  max-width: 620px;
  margin: 0 auto 34px;
}
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ── Feature cards ──────────────────────────────────────── */
.features { padding: 40px 0 96px; }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 820px) { .feature-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; } }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow-sm);
}
.card .icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--brand-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}
.card h3 { margin: 0 0 8px; font-size: 19px; color: var(--ink); letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

/* ── CTA band ───────────────────────────────────────────── */
.cta {
  margin: 0 0 96px;
  padding: 56px 32px;
  border-radius: 28px;
  background: var(--grad);
  color: #fff;
  text-align: center;
  box-shadow: 0 20px 50px rgba(201, 77, 255, 0.28);
}
.cta h2 { margin: 0 0 12px; font-size: clamp(26px, 4vw, 36px); letter-spacing: -0.02em; }
.cta p { margin: 0 0 26px; opacity: 0.92; font-size: 18px; }
.cta .btn-ghost { background: rgba(255, 255, 255, 0.16); color: #fff; border-color: rgba(255, 255, 255, 0.4); }
.cta .btn-ghost:hover { background: rgba(255, 255, 255, 0.26); }

/* ── Legal / support pages ──────────────────────────────── */
.legal { padding: 64px 0 80px; }
.legal h1 {
  font-size: clamp(32px, 5vw, 46px);
  letter-spacing: -0.025em;
  color: var(--ink);
  margin: 0 0 10px;
  font-weight: 800;
}
.legal .updated { color: var(--muted-2); font-size: 14px; margin: 0 0 28px; }
.legal .intro { font-size: 19px; color: var(--muted); margin: 0 0 40px; }
.legal section { margin-bottom: 34px; }
.legal h2 {
  font-size: 21px;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  font-weight: 700;
}
.legal p { color: #384152; margin: 0 0 14px; }
.legal ul { margin: 0 0 14px; padding-left: 20px; }
.legal li { color: #384152; margin-bottom: 8px; }
.legal a { font-weight: 600; }

.callout {
  border: 1px solid var(--border);
  border-left: 4px solid var(--brand);
  background: var(--brand-soft);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  margin: 0 0 34px;
}
.callout p { margin: 0; color: var(--ink-2); }

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1.5px solid var(--brand);
  color: var(--brand);
  font-weight: 600;
  background: #fff;
}
.contact-btn:hover { text-decoration: none; background: var(--brand-soft); }

/* ── Footer ─────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 44px 0;
  color: var(--muted);
  font-size: 14px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  margin-bottom: 22px;
}
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; }
.footer-links a { color: var(--muted); font-weight: 500; }
.footer-links a:hover { color: var(--ink); text-decoration: none; }
.footer-legal { color: var(--muted-2); }
.footer-legal a { color: var(--muted); }