/* Peripatica website. Tokens and rules from docs/peripatica-design-language.md
   (§4 roles, §5 type, §7 spacing, §14 Website); the app (Brand.swift) is the
   source of truth for shared components. No framework, no build step. */

@font-face {
  font-family: "Nunito";
  src: url("/fonts/nunito-700-900-latin.woff2") format("woff2");
  font-weight: 700 900;
  font-display: swap;
}
@font-face {
  font-family: "Anton";
  src: url("/fonts/anton-latin.woff2") format("woff2");
  font-display: swap;
}

/* Core palette lives here only; rules below use role tokens. */
:root {
  color-scheme: light dark;
  --brand-primary: #00707A;
  --brand-on-primary: #FFFFFF;
  --brand-primary-tint: #E3F2F2;
  --brand-background: #FBF7F0;      /* Sand */
  --brand-surface: #FFFFFF;
  --brand-ink: #13222C;
  --brand-ink-secondary: #4E5C66;
  --brand-separator: #E3DACB;
  --brand-danger: #B42318;
  --brand-paper: #EFE6D2;           /* art plates only; never inverts */
  --brand-wordmark: #2A3346;
  --brand-sky: #86A7BE;             /* art only: postcard placeholder */
  --brand-highlight: #FFE7A3;       /* draft placeholders (TOBI:) */
  --brand-shadow: 0 3px 8px rgb(0 0 0 / 0.08);

  --space-xs: 4px;
  --space-s: 8px;
  --space-m: 12px;
  --space-l: 16px;
  --space-xl: 24px;
  --space-xxl: 32px;
  --space-xxxl: 48px;

  --font-display: ui-rounded, "Nunito", system-ui, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-lockup: "Anton", Impact, "Arial Narrow Bold", sans-serif;
}

/* City layer: the accent changes per city (§4.3). */
[data-city="la"], :root {
  --brand-accent: #B93E1C;
  --brand-accent-tint: #FDE9E0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand-primary: #3CC8CD;
    --brand-on-primary: #04262A;
    --brand-primary-tint: #123A40;
    --brand-background: #0D1820;    /* Night */
    --brand-surface: #16242E;
    --brand-ink: #F4EFE6;
    --brand-ink-secondary: #A7B3BB;
    --brand-separator: #2B3B46;
    --brand-danger: #FF7A6B;
    --brand-wordmark: #F4EFE6;
    --brand-sky: #1B2B45;
    --brand-shadow: 0 3px 8px rgb(0 0 0 / 0.4);
  }
  [data-city="la"], :root {
    --brand-accent: #FF8A5C;
    --brand-accent-tint: #47231A;
  }
}

@media (prefers-contrast: more) {
  :root { --brand-separator: var(--brand-ink-secondary); }
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--brand-background);
  color: var(--brand-ink);
  font: 400 1.0625rem/1.55 var(--font-body);   /* 17 px on phones */
}

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

a { color: var(--brand-primary); text-underline-offset: 0.15em; }
a:focus-visible { outline: 3px solid var(--brand-primary); outline-offset: 3px; border-radius: 4px; }
main:focus { outline: none; }

.wrap { width: min(100% - 2 * var(--space-l), 1040px); margin-inline: auto; }

.skip {
  position: absolute; left: var(--space-l); top: -100px; z-index: 1;
  background: var(--brand-surface); color: var(--brand-primary);
  padding: var(--space-s) var(--space-l); border-radius: 999px;
  box-shadow: var(--brand-shadow);
}
.skip:focus { top: var(--space-m); }
.skip:focus-visible { border-radius: 999px; }

h1, h2, h3 { font-family: var(--font-display); font-weight: 800; margin: 0; color: var(--brand-ink); }
h1 {
  font-size: clamp(2.5rem, 6.5vw, 4.25rem);   /* 40 → 68 px */
  line-height: 1.05; letter-spacing: -0.01em;
  max-width: 14ch;
}
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); line-height: 1.1; }   /* 28 → 40 px */
h3 { font-size: 1.1875rem; line-height: 1.25; font-weight: 700; }   /* 19 px */

/* Header: Peripatica lockup (stamp + wordmark), §6 */
.site-header { padding: var(--space-l) 0 0; }
.lockup {
  display: inline-flex; align-items: center; gap: var(--space-s);
  color: var(--brand-wordmark); text-decoration: none;
}
.lockup .stamp { width: 40px; height: 40px; flex: none; }
.lockup .stamp-perf { stroke: var(--brand-background); }
.lockup span {
  font-family: var(--font-lockup);
  font-size: 1.75rem; line-height: 1; letter-spacing: 0.06em; text-transform: uppercase;
}
.wordmark { margin: 0; }

/* Hero: postcard in its frame, the promise as H1 (§14) */
.hero { padding: var(--space-xl) 0 var(--space-xxxl); }
.postcard {
  margin: 0;
  padding: var(--space-s);                  /* mat, as PostcardFrame in the app */
  background: var(--brand-surface);
  border-radius: 20px;
  box-shadow: var(--brand-shadow);
  transform: rotate(-2deg);
}
.postcard img {
  width: 100%; aspect-ratio: 1280 / 877;
  border-radius: 14px;
  background: var(--brand-sky);             /* while the image loads, or if it doesn't */
  color: var(--brand-ink); font-size: 0.9375rem;
}
.hero h1 { margin-top: var(--space-xxl); }
.lede { font-size: 1.1875rem; max-width: 38em; margin: var(--space-l) 0 0; }

/* Status chip (§8 Chip) */
.chip {
  display: inline-flex; align-items: center;
  min-height: 28px; padding: 2px 10px; border-radius: 999px;
  background: var(--brand-accent-tint); color: var(--brand-accent);
  font: 600 0.9375rem/1.25 var(--font-body);
}

/* App card */
.app-card {
  display: grid; grid-template-columns: auto 1fr; gap: var(--space-xl); align-items: start;
  background: var(--brand-surface);
  border: 1px solid var(--brand-separator);
  border-radius: 20px;
  padding: var(--space-xl);
}
.app-icon {
  width: 96px; height: 96px; border-radius: 22px; overflow: hidden;
  box-shadow: 0 1px 3px rgb(0 0 0 / 0.2);
  font-size: 0.75rem; line-height: 1.2; color: var(--brand-ink-secondary);
}
.app-card h2 { margin-top: var(--space-s); }
.app-card p { margin: var(--space-s) 0 0; max-width: 38em; }

/* How it works: numbered stop rings joined by dots, as PromiseList in the app (§8) */
.how { padding: var(--space-xxxl) 0; }
.steps { list-style: none; padding: 0; margin: var(--space-xl) 0 0; max-width: 40rem; counter-reset: step; }
.steps li {
  counter-increment: step;
  display: grid; grid-template-columns: 32px 1fr; column-gap: var(--space-m);
}
.steps li::before {
  content: counter(step);
  grid-row: 1; grid-column: 1;
  display: grid; place-items: center;
  width: 32px; height: 32px; border-radius: 50%;
  border: 3px solid var(--brand-primary);
  background: var(--brand-surface);
  color: var(--brand-primary);
  font: 800 0.9375rem/1 var(--font-display);
}
.steps li:not(:last-child)::after {              /* dotted rail to the next ring */
  content: "";
  grid-row: 2; grid-column: 1; justify-self: center;
  width: 3px; margin: var(--space-xs) 0;
  background: radial-gradient(circle, var(--brand-primary) 1.5px, transparent 1.6px) top / 3px 6px repeat-y;
}
.steps h3 { grid-column: 2; align-self: center; }
.steps p { grid-row: 2; grid-column: 2; margin: var(--space-xs) 0 var(--space-xl); color: var(--brand-ink-secondary); }
.steps li:last-child p { margin-bottom: 0; }

/* Text pages (privacy, support) */
.doc { padding: var(--space-xxl) 0 var(--space-xxxl); }
.doc .wrap { max-width: 44rem; }
.doc h1 { max-width: none; font-size: clamp(2.25rem, 5vw, 3rem); }
.doc h2 { font-size: clamp(1.5rem, 3vw, 1.875rem); margin-top: var(--space-xxl); }
.doc h3 { margin-top: var(--space-xl); }
.doc p, .doc ul { margin: var(--space-s) 0 0; }
.doc ul { padding-left: 1.25em; }
.doc li + li { margin-top: var(--space-xs); }
.doc code { font-size: 0.95em; }
.doc-meta { color: var(--brand-ink-secondary); font-size: 0.9375rem; }
/* Placeholders for Tobi; 06-publish.sh refuses any page that still has one. */
.todo { background: var(--brand-highlight); color: #13222C; padding: 0 4px; border-radius: 4px; }

/* 404 */
.eyebrow { margin: 0 0 var(--space-s); color: var(--brand-ink-secondary); font-weight: 600; }

/* Footer: "LA Walking Tours by Peripatica" everywhere (§2) */
.site-footer {
  border-top: 1px solid var(--brand-separator);
  padding: var(--space-xl) 0 var(--space-xxxl);
  color: var(--brand-ink-secondary); font-size: 0.9375rem; line-height: 1.45;
}
.site-footer p { margin: 0 0 var(--space-s); }
.site-footer strong { color: var(--brand-ink); }
.site-footer nav a { display: inline-block; padding-block: var(--space-s); }
.site-footer a[aria-current="page"] { color: var(--brand-ink); text-decoration: none; font-weight: 600; }

/* Larger screens */
@media (min-width: 720px) {
  body { font-size: 1.125rem; }   /* 18 px */
  .site-header { padding-top: var(--space-xl); }
  .lockup .stamp { width: 44px; height: 44px; }
  .lockup span { font-size: 2rem; }
  .app-card { padding: var(--space-xxl); gap: var(--space-xxl); }
  .app-icon { width: 120px; height: 120px; border-radius: 27px; }
  .how { padding-bottom: var(--space-xxxl); }
}

/* Wide screens: promise left, postcard right, so the headline sits above the fold */
@media (min-width: 960px) {
  .hero { padding-top: var(--space-xxl); }
  .hero .wrap {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    grid-template-areas: "title card" "lede card" ". card";
    grid-template-rows: auto auto 1fr;
    column-gap: var(--space-xxxl);
  }
  .postcard { grid-area: card; align-self: start; }
  .hero h1 { grid-area: title; margin-top: var(--space-xxxl); font-size: clamp(3rem, 4.8vw, 4.25rem); }
  .lede { grid-area: lede; }
  .how .wrap { display: grid; grid-template-columns: 22rem minmax(0, 1fr); column-gap: var(--space-xxxl); }
  .how h2 { margin-top: var(--space-xs); }
  .steps { margin-top: 0; }
}

@media (max-width: 420px) {
  .app-card { grid-template-columns: 1fr; gap: var(--space-l); }
}