/* QuitSmoking marketing site — shared styles for all language editions */

:root {
  --accent: #0a84ff;
  --accent-2: #64d2ff;
  --bg-0: #060709;
  --bg-1: #0d0f13;
  --card: rgba(255, 255, 255, 0.045);
  --card-border: rgba(255, 255, 255, 0.08);
  --text-0: #f5f6f8;
  --text-1: rgba(245, 246, 248, 0.72);
  --text-2: rgba(245, 246, 248, 0.46);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 12px;
  --max-w: 1080px;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --accent: #0a6dd6;
    --accent-2: #0091c8;
    --bg-0: #f4f5f7;
    --bg-1: #ffffff;
    --card: rgba(10, 13, 20, 0.035);
    --card-border: rgba(10, 13, 20, 0.08);
    --text-0: #14161a;
    --text-1: rgba(20, 22, 26, 0.72);
    --text-2: rgba(20, 22, 26, 0.5);
    color-scheme: light;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(
      circle at 20% -10%,
      color-mix(in srgb, var(--accent) 22%, transparent),
      transparent 55%
    ),
    radial-gradient(
      circle at 100% 10%,
      color-mix(in srgb, var(--accent-2) 14%, transparent),
      transparent 45%
    ),
    var(--bg-0);
  color: var(--text-0);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* subtle grain for a tactile, non-flat background */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  z-index: 0;
}

a { color: inherit; text-decoration: none; }

img { max-width: 100%; display: block; }

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ---------- nav ---------- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  background: color-mix(in srgb, var(--bg-1) 70%, transparent);
  border-bottom: 1px solid var(--card-border);
}

.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.brand img {
  width: 30px;
  height: 30px;
  border-radius: 8px;
}

.lang-switch {
  display: flex;
  gap: 4px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  padding: 4px;
}

.lang-switch a {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--text-2);
  transition: color 0.15s ease, background 0.15s ease;
}

.lang-switch a:hover { color: var(--text-0); }

.lang-switch a[aria-current="true"] {
  color: var(--bg-0);
  background: var(--text-0);
}

/* ---------- hero ---------- */

.hero {
  padding: 88px 0 40px;
  text-align: center;
}

.hero-icon {
  width: 92px;
  height: 92px;
  margin: 0 auto 28px;
  border-radius: 24px;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2), 0 12px 32px -8px rgba(10, 132, 255, 0.55),
    0 0 0 1px var(--card-border);
}

h1 {
  font-size: clamp(34px, 6vw, 58px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 800;
  margin: 0 0 20px;
  background: linear-gradient(180deg, var(--text-0), var(--text-1));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.lede {
  max-width: 560px;
  margin: 0 auto;
  font-size: clamp(16px, 2.4vw, 19px);
  line-height: 1.55;
  color: var(--text-1);
}

/* ---------- mockup ---------- */

.mockup-shell {
  margin: 48px auto 0;
  max-width: 380px;
  position: relative;
}

.mockup {
  border-radius: 36px;
  padding: 22px;
  background: linear-gradient(
    160deg,
    color-mix(in srgb, var(--bg-1) 92%, var(--accent) 8%),
    var(--bg-1)
  );
  border: 1px solid var(--card-border);
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.55), 0 0 0 1px var(--card-border);
}

.mockup-label {
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 14px;
}

.mockup-timer {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  text-align: center;
  margin-bottom: 8px;
}

.mockup-timer.secondary { margin-bottom: 18px; }

.mockup-timer .num {
  font-size: 22px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.mockup-timer .unit {
  font-size: 10px;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.mockup-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.mockup-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 14px;
}

.mockup-card .value {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.mockup-card .label {
  font-size: 11px;
  color: var(--text-2);
  margin-top: 2px;
}

/* ---------- features ---------- */

.features {
  padding: 96px 0 40px;
}

.section-head {
  text-align: center;
  max-width: 520px;
  margin: 0 auto 56px;
}

.section-head h2 {
  font-size: clamp(26px, 4vw, 36px);
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}

.section-head p {
  color: var(--text-1);
  font-size: 16px;
  line-height: 1.55;
  margin: 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

@media (max-width: 860px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .feature-grid { grid-template-columns: 1fr; }
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--card-border));
}

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  margin-bottom: 16px;
  font-size: 19px;
}

.feature-card h3 {
  font-size: 16px;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-1);
  margin: 0;
}

/* ---------- footer ---------- */

footer {
  margin-top: 100px;
  border-top: 1px solid var(--card-border);
  padding: 36px 0 48px;
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-2);
  font-size: 13px;
}

.footer-brand img {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  opacity: 0.85;
}

footer .lang-switch a { color: var(--text-2); }

.footer-legal {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--card-border);
  display: flex;
  gap: 20px;
  font-size: 13px;
}

.footer-legal a {
  color: var(--text-2);
  transition: color 0.15s ease;
}

.footer-legal a:hover { color: var(--text-1); }

/* ---------- legal pages ---------- */

.legal-wrap {
  max-width: 720px;
  padding-top: 56px;
  padding-bottom: 24px;
}

.back-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 32px;
  transition: color 0.15s ease;
}

.back-link:hover { color: var(--accent-2); }

.legal h1 {
  font-size: clamp(28px, 4vw, 40px);
  -webkit-text-fill-color: currentColor;
  background: none;
  margin-bottom: 8px;
}

.legal-effective {
  color: var(--text-2);
  font-size: 14px;
  margin: 0 0 32px;
}

.legal-intro {
  color: var(--text-1);
  font-size: 17px;
  line-height: 1.6;
  margin: 0 0 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--card-border);
}

.legal h2 {
  font-size: 19px;
  letter-spacing: -0.01em;
  margin: 36px 0 12px;
}

.legal p {
  color: var(--text-1);
  font-size: 15px;
  line-height: 1.7;
  margin: 0 0 4px;
}