/* AI Food Scanner — shared styles */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #FFFFFF;
  --bg-soft: #FAFAFB;
  --bg-muted: #F4F4F7;
  --surface: #FFFFFF;
  --border: #E7E7EC;
  --divider: #EEEEF2;

  --primary: #6366F1;
  --primary-soft: #818CF8;
  --primary-tint: rgba(99,102,241,0.10);
  --primary-ink: #4F46E5;

  --cal: #F87171;
  --protein: #34D399;
  --carbs: #FBBF24;
  --fat: #A78BFA;

  --t1: #0B1020;
  --t2: #4A5063;
  --t3: #8A90A2;
  --t4: #B6BAC7;

  --r-s: 10px; --r-m: 14px; --r-l: 20px; --r-xl: 28px; --r-pill: 100px;

  --shadow-sm: 0 1px 2px rgba(16,24,40,0.04), 0 1px 1px rgba(16,24,40,0.02);
  --shadow-md: 0 8px 24px rgba(16,24,40,0.06), 0 2px 6px rgba(16,24,40,0.04);
  --shadow-lg: 0 24px 60px rgba(99,102,241,0.18), 0 6px 16px rgba(16,24,40,0.06);
}

html, body {
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--t1);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- NAV ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  background: rgba(255,255,255,0.78);
  border-bottom: 1px solid var(--divider);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.2px;
}
.brand-mark {
  width: 34px; height: 34px;
  border-radius: 9px;
  overflow: hidden;
  background: var(--primary-tint);
  display: grid; place-items: center;
  box-shadow: 0 4px 10px rgba(99,102,241,0.25);
}
.brand-mark img { width: 100%; height: 100%; object-fit: cover; }
.nav-links {
  display: flex;
  gap: 28px;
  font-weight: 600;
  font-size: 15px;
  color: var(--t2);
}
.nav-links a:hover { color: var(--t1); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--t1);
  color: #fff;
  border-radius: 100px;
  font-weight: 700;
  font-size: 14px;
}
.nav-cta:hover { background: var(--primary); }

@media (max-width: 720px) {
  .nav-links { display: none; }
}

/* ---------- FOOTER ---------- */
.footer {
  border-top: 1px solid var(--divider);
  padding: 48px 0 40px;
  margin-top: 120px;
  background: var(--bg-soft);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.footer-brand {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 14px;
}
.footer-brand .brand-mark { width: 32px; height: 32px; }
.footer-brand strong { font-size: 16px; font-weight: 800; }
.footer p.muted {
  color: var(--t2);
  font-size: 14px;
  max-width: 340px;
}
.footer h5 {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--t3);
  margin-bottom: 14px;
}
.footer ul { list-style: none; display: grid; gap: 10px; }
.footer ul a { font-size: 14px; color: var(--t2); font-weight: 600; }
.footer ul a:hover { color: var(--primary); }
.footer-bottom {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--divider);
  display: flex; justify-content: space-between;
  color: var(--t3);
  font-size: 13px;
  font-weight: 600;
}
@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 10px; }
}