/*
 * The whole site's stylesheet. One file, no build step, no framework, no web
 * font — the pages it dresses are legal text and support instructions, and the
 * fastest thing to serve someone looking for a privacy policy is plain HTML.
 *
 * Two rules keep it honest as products change it:
 *
 *   Colour is only ever a custom property. Both appearances are defined here, so
 *   a product that recolours the site edits the two blocks at the top and nothing
 *   below them changes.
 *
 *   Direction-sensitive properties are logical (inline-start, padding-block,
 *   margin-inline), never left/right. AI/DESIGN.md requires the site to cover
 *   every language the app ships, and right-to-left is not an afterthought that
 *   can be bolted on later.
 */

:root {
  color-scheme: light dark;

  --background: #ffffff;
  --surface: #f7f7f8;
  --text: #1a1a1c;
  --text-muted: #5c5c63;
  --accent: #0b5fbe;
  --border: #e2e2e6;
  --focus: #0b5fbe;

  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-synthesis: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #131315;
    --surface: #1e1e21;
    --text: #f1f1f3;
    --text-muted: #a6a6ae;
    --accent: #6fa8f5;
    --border: #303035;
    --focus: #6fa8f5;
  }
}

* {
  box-sizing: border-box;
}

html {
  background: var(--background);
}

body {
  min-width: 280px;
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: clip;
  text-rendering: optimizeLegibility;
}

/* --- Links and focus ----------------------------------------------------- */

a {
  color: var(--accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

a:hover {
  text-decoration-thickness: 0.14em;
}

/* Never removed, never replaced by a colour change alone: the outline is the
   only thing telling a keyboard user where they are. */
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
  border-radius: 0.35rem;
}

/* Off-screen until focused, then the first stop on the page. */
.skip-link {
  position: fixed;
  top: 0.75rem;
  inset-inline-start: 0.75rem;
  z-index: 10;
  min-height: 44px;
  padding: 0.6rem 0.9rem;
  border-radius: 0.65rem;
  background: var(--text);
  color: var(--background);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

/* --- Layout -------------------------------------------------------------- */

.shell {
  width: min(100% - 2rem, 760px);
  margin-inline: auto;
}

.site-header {
  padding-block: 1rem;
}

.site-nav,
.footer-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0.75rem;
}

/* 44x44 is the minimum tap target AI/DESIGN.md requires of the app, and a
   support page opened one-handed on a phone is no different. */
.site-nav a,
.footer-row a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-inline: 0.5rem;
}

.site-nav a[aria-current="page"] {
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
}

.site-footer {
  margin-block-start: 3rem;
  padding-block: 1.5rem 2.5rem;
  border-block-start: 1px solid var(--border);
  color: var(--text-muted);
}

.footer-row p {
  margin: 0;
  margin-inline-end: auto;
}

/* --- Content ------------------------------------------------------------- */

.eyebrow {
  margin-block-end: 0.25rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

h1 {
  margin-block: 0 0.5rem;
  font-size: clamp(1.75rem, 1.2rem + 2.4vw, 2.5rem);
  line-height: 1.2;
}

h2 {
  margin-block-start: 2.25rem;
  font-size: 1.25rem;
  line-height: 1.3;
}

.meta {
  margin-block: 0 1.25rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.lede {
  font-size: 1.1rem;
}

.document ul {
  padding-inline-start: 1.25rem;
}

.document li + li {
  margin-block-start: 0.4rem;
}

/* A callout, not a warning: used for the one-paragraph summary at the top of
   the privacy policy, which is the part most people actually read. */
.notice {
  margin-block: 1rem;
  padding: 1rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--surface);
}

.notice p {
  margin: 0;
}

.card-links {
  display: grid;
  gap: 1rem;
  margin-block-start: 2rem;
  padding: 0;
  list-style: none;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
}

.card-links li {
  padding: 1.15rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--surface);
}

.card-links h2 {
  margin-block: 0 0.35rem;
  font-size: 1.05rem;
}

.card-links p {
  margin-block: 0 0.6rem;
  color: var(--text-muted);
}