/* Recipe Healthifier — shared site styles.
   Plain CSS, no build step, no external requests. Supports light/dark via
   `color-scheme` + `prefers-color-scheme`, with a `light-dark()` upgrade for
   browsers that support it (Safari 17.5+, Chrome 123+, Firefox 120+). */

:root {
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Brand tokens (from app.json: primaryColor #4A6B4D, splash bg #FBF6EE) */
  --color-bg-light: #fbf6ee;
  --color-bg-elevated-light: #ffffff;
  --color-text-light: #2b2a25;
  --color-text-muted-light: #5c5b54;
  --color-brand-light: #4a6b4d;
  --color-brand-text-light: #ffffff;
  --color-accent-light: #c9622d;
  --color-border-light: #e4ddcc;
  --color-chip-bg-light: #eef2e9;
  --color-chip-text-light: #3a5a3d;

  --color-bg-dark: #1b1a16;
  --color-bg-elevated-dark: #242320;
  --color-text-dark: #ece9df;
  --color-text-muted-dark: #b3b0a3;
  --color-brand-dark: #86ab89;
  --color-brand-text-dark: #14201a;
  --color-accent-dark: #e08a54;
  --color-border-dark: #3a3833;
  --color-chip-bg-dark: #2c3329;
  --color-chip-text-dark: #b7d3ba;

  --color-bg: var(--color-bg-light);
  --color-bg-elevated: var(--color-bg-elevated-light);
  --color-text: var(--color-text-light);
  --color-text-muted: var(--color-text-muted-light);
  --color-brand: var(--color-brand-light);
  --color-brand-text: var(--color-brand-text-light);
  --color-accent: var(--color-accent-light);
  --color-border: var(--color-border-light);
  --color-chip-bg: var(--color-chip-bg-light);
  --color-chip-text: var(--color-chip-text-light);

  /* MANDATORY fallback for browsers without light-dark() support */
  @media (prefers-color-scheme: dark) {
    --color-bg: var(--color-bg-dark);
    --color-bg-elevated: var(--color-bg-elevated-dark);
    --color-text: var(--color-text-dark);
    --color-text-muted: var(--color-text-muted-dark);
    --color-brand: var(--color-brand-dark);
    --color-brand-text: var(--color-brand-text-dark);
    --color-accent: var(--color-accent-dark);
    --color-border: var(--color-border-dark);
    --color-chip-bg: var(--color-chip-bg-dark);
    --color-chip-text: var(--color-chip-text-dark);
  }

  /* Upgrade path for browsers that support light-dark() */
  @supports (color: light-dark(white, black)) {
    --color-bg: light-dark(var(--color-bg-light), var(--color-bg-dark));
    --color-bg-elevated: light-dark(var(--color-bg-elevated-light), var(--color-bg-elevated-dark));
    --color-text: light-dark(var(--color-text-light), var(--color-text-dark));
    --color-text-muted: light-dark(var(--color-text-muted-light), var(--color-text-muted-dark));
    --color-brand: light-dark(var(--color-brand-light), var(--color-brand-dark));
    --color-brand-text: light-dark(var(--color-brand-text-light), var(--color-brand-text-dark));
    --color-accent: light-dark(var(--color-accent-light), var(--color-accent-dark));
    --color-border: light-dark(var(--color-border-light), var(--color-border-dark));
    --color-chip-bg: light-dark(var(--color-chip-bg-light), var(--color-chip-bg-dark));
    --color-chip-text: light-dark(var(--color-chip-text-light), var(--color-chip-text-dark));
  }

  color-scheme: light dark;
  accent-color: var(--color-brand);
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

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

a {
  color: var(--color-brand);
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */

.site-header {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--color-text);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.6rem;
  background: var(--color-brand);
  color: var(--color-brand-text);
  font-size: 1.1rem;
}

.site-header nav a {
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

/* Hero */

.hero {
  padding: 3.5rem 0 2.5rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.hero .tagline {
  color: var(--color-brand);
  font-weight: 700;
}

.hero p.lede {
  max-width: 46rem;
  margin: 0 auto;
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

/* Rule chips */

.rules {
  padding: 1.5rem 0 3rem;
}

.rules h2 {
  text-align: center;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.chip {
  background: var(--color-chip-bg);
  color: var(--color-chip-text);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.5rem 1.05rem;
  font-size: 0.95rem;
  font-weight: 600;
  white-space: nowrap;
}

/* How it works */

.steps {
  padding: 2.5rem 0;
  border-top: 1px solid var(--color-border);
}

.steps h2 {
  text-align: center;
  font-size: 1.5rem;
  margin-bottom: 2rem;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 640px) {
  .step-grid {
    grid-template-columns: 1fr;
  }
}

.step {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  padding: 1.5rem;
}

.step .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--color-brand);
  color: var(--color-brand-text);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.step h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.step p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Email capture */

.notify {
  padding: 3rem 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.notify h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.notify p {
  color: var(--color-text-muted);
  max-width: 34rem;
  margin: 0 auto 1.5rem;
}

.mailto-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-brand);
  color: var(--color-brand-text);
  text-decoration: none;
  font-weight: 700;
  padding: 0.85rem 1.6rem;
  border-radius: 0.7rem;
  font-size: 1rem;
  min-height: 48px;
}

.mailto-button:hover {
  opacity: 0.92;
}

.notify .fineprint {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Disclaimer */

.disclaimer {
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-border);
}

.disclaimer p {
  max-width: 40rem;
  margin: 0 auto;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Footer */

.site-footer {
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--color-border);
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.site-footer a {
  color: var(--color-text-muted);
  text-decoration: underline;
}

.site-footer nav {
  display: flex;
  gap: 1.25rem;
}

/* Legal page (privacy.html) */

.legal {
  padding: 2.5rem 0 4rem;
}

.legal h1 {
  font-size: 2rem;
  margin-bottom: 0.25rem;
}

.legal .effective-date {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.legal h2 {
  font-size: 1.25rem;
  margin-top: 2.25rem;
  margin-bottom: 0.6rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.4rem;
}

.legal h3 {
  font-size: 1.05rem;
  margin-top: 1.5rem;
  margin-bottom: 0.4rem;
}

.legal p,
.legal li {
  color: var(--color-text);
}

.legal ul {
  padding-left: 1.25rem;
}

.legal .callout {
  background: var(--color-chip-bg);
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}

.legal table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.92rem;
}

.legal th,
.legal td {
  text-align: left;
  padding: 0.55rem 0.6rem;
  border: 1px solid var(--color-border);
  vertical-align: top;
}

.legal th {
  background: var(--color-bg-elevated);
}