/* Shared stylesheet for the static pages in public/ (privacy-policy,
   terms, changelog, thanks). Hand-written — no build step.
   Mirrors the design tokens in src/index.css; keep them in sync.

   Tokens come from the "apple" design system:
   https://luongnv.com/sleek-ui/designs/apple.json
   The --color-paper / --color-ink / --color-accent names are kept as aliases
   so the rules below didn't have to be rewritten. */

:root {
  color-scheme: light;

  --color-background: hsl(0 0% 100%);
  --color-foreground: hsl(240 3% 12%);
  --color-muted: hsl(240 4.8% 95.9%);
  --color-muted-foreground: hsl(240 3.8% 45%); /* nudged from 46.1% to clear the 4.5 contrast target on --color-muted */
  --color-primary: hsl(210 100% 45%);
  --color-primary-foreground: hsl(0 0% 100%);
  --color-secondary: hsl(240 4.8% 95.9%);
  --color-secondary-foreground: hsl(240 10% 3.9%);
  --color-border: hsl(240 5.9% 90%);
  --color-card: hsl(0 0% 100%);
  --color-card-foreground: hsl(240 10% 3.9%);

  --color-foreground-soft: hsl(240 3.8% 30%);
  --color-border-strong: hsl(240 5.9% 78%);
  --color-primary-strong: hsl(210 100% 38%);
  --color-primary-soft: hsl(210 100% 96%);
  --color-ring: hsl(210 100% 45%);
  --color-success: hsl(142 72% 29%);
  --color-success-soft: hsl(142 52% 93%);

  --radius: 0.375rem;

  /* Aliases used throughout this file */
  --color-paper: var(--color-background);
  --color-paper-2: var(--color-muted);
  --color-white: var(--color-card);
  --color-ink: var(--color-foreground);
  --color-ink-2: var(--color-foreground-soft);
  --color-ink-3: var(--color-muted-foreground);
  --color-line: var(--color-border);
  --color-line-strong: var(--color-border-strong);
  --color-accent: var(--color-primary);
  --color-accent-ink: var(--color-primary-strong);
  --color-accent-soft: var(--color-primary-soft);

  --font-sans: Inter, system-ui, -apple-system, sans-serif;
  --font-serif: Georgia, 'Times New Roman', serif;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --shadow-card: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
}

.dark {
  color-scheme: dark;

  --color-background: hsl(0 0% 0%);
  --color-foreground: hsl(0 0% 95%);
  --color-muted: hsl(240 33% 19%);
  --color-muted-foreground: hsl(240 5% 64.9%);
  --color-primary: hsl(210 100% 45%);
  --color-primary-foreground: hsl(0 0% 100%);
  --color-secondary: hsl(240 33% 19%);
  --color-secondary-foreground: hsl(0 0% 95%);
  --color-border: hsl(240 33% 22%);
  --color-card: hsl(240 33% 17%);
  --color-card-foreground: hsl(0 0% 95%);

  --color-foreground-soft: hsl(0 0% 78%);
  --color-border-strong: hsl(240 33% 32%);
  --color-primary-strong: hsl(210 100% 66%);
  --color-primary-soft: hsl(210 55% 16%);
  --color-ring: hsl(210 100% 45%);
  --color-success: hsl(142 60% 62%);
  --color-success-soft: hsl(142 40% 14%);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  background-color: var(--color-paper);
  color: var(--color-ink-2);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

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

/* Layout */

.container {
  width: 100%;
  max-width: 72rem;
  margin-inline: auto;
  padding-inline: 1.5rem;
}
.container-sm {
  max-width: 48rem;
}
.container-md {
  max-width: 56rem;
}

.page {
  padding-block: 4rem;
}
.page-header {
  margin-bottom: 3.5rem;
}
.back-nav {
  margin-bottom: 3rem;
}

/* Typography */

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  color: var(--color-ink-3);
}

.display-page {
  font-family: var(--font-sans);
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 600;
  color: var(--color-ink);
  margin-top: 0.5rem;
  margin-bottom: 1rem;
}

.lede {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-ink-2);
}

.meta {
  font-size: 0.875rem;
  color: var(--color-ink-3);
}

/* Long-form text (legal pages, changelog lists) */

.prose h2 {
  font-family: var(--font-sans);
  font-size: 1.625rem;
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--color-ink);
  margin-bottom: 1rem;
}
/* The Inter URL these pages load carries only a `wght` axis — no italic file —
   so `font-style: italic` would be a browser-synthesized oblique. Emphasis uses
   primary tint plus heavier weight (WCAG 1.4.1). Mirrors src/index.css. */
.prose em,
.entry em {
  font-style: normal;
  font-weight: 700;
  color: var(--color-primary);
}

.prose h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-ink);
  margin: 1.5rem 0 0.5rem;
}
.prose p {
  margin-bottom: 1rem;
}
.prose ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}
.prose li + li {
  margin-top: 0.5rem;
}
.prose strong {
  color: var(--color-ink);
  font-weight: 600;
}
.prose code {
  font-size: 0.875em;
  background: var(--color-paper-2);
  padding: 2px 6px;
  border-radius: 6px;
  color: var(--color-ink);
}
.prose a {
  color: var(--color-accent-ink);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--color-line-strong);
}

.section + .section {
  margin-top: 2.5rem;
}

.updated {
  margin-bottom: 2.5rem;
}

/* Surfaces */

.card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: 0.5rem;
  box-shadow: var(--shadow-card);
  padding: 1.5rem;
}
.card > :last-child {
  margin-bottom: 0;
}

/* Links and buttons */

.link {
  color: var(--color-accent-ink);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--color-line-strong);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-accent-ink);
  font-weight: 500;
  text-decoration: none;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  height: 3rem;
  padding-inline: 1.5rem;
  border-radius: var(--radius);
  background: var(--color-accent);
  color: var(--color-primary-foreground);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition:
    transform 160ms var(--ease-out),
    background-color 160ms ease;
}
.btn-primary:active {
  transform: scale(0.97);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  height: 3rem;
  padding-inline: 1.5rem;
  border-radius: var(--radius);
  background: var(--color-white);
  border: 1px solid var(--color-line-strong);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition:
    transform 160ms var(--ease-out),
    background-color 160ms ease;
}
.btn-secondary:active {
  transform: scale(0.97);
}

@media (hover: hover) and (pointer: fine) {
  .prose a:hover,
  .link:hover {
    text-decoration-color: var(--color-accent);
  }
  .back-link:hover {
    text-decoration: underline;
    text-underline-offset: 4px;
  }
  .btn-primary:hover {
    background: var(--color-accent-ink);
  }
  .btn-secondary:hover {
    background: var(--color-paper-2);
  }
}

/* Changelog entries */

.entry {
  position: relative;
}
.entry + .entry {
  margin-top: 4rem;
}
.entry-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 0.75rem;
  margin-bottom: 0.5rem;
}
.entry-title {
  font-family: var(--font-sans);
  font-size: 1.625rem;
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--color-ink);
}
.badge {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius);
  border: 1px solid var(--color-line-strong);
  background: var(--color-accent-soft);
  padding: 2px 10px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-accent-ink);
}
.entry p {
  margin-bottom: 1rem;
}
.entry ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
}
.entry li + li {
  margin-top: 0.5rem;
}
.entry strong {
  color: var(--color-ink);
  font-weight: 600;
}
.entry code {
  font-size: 0.875em;
  background: var(--color-paper-2);
  padding: 2px 6px;
  border-radius: 6px;
  color: var(--color-ink);
}
.entry a {
  color: var(--color-accent-ink);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--color-line-strong);
}
.entry-date {
  font-size: 0.875rem;
  color: var(--color-ink-3);
  margin-bottom: 1.5rem;
}
.entry-label {
  margin-bottom: 0.75rem;
}
.entry-dot {
  display: none;
}
.page-endnote {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-line);
  font-size: 0.875rem;
  color: var(--color-ink-3);
}
@media (min-width: 640px) {
  .entry {
    padding-left: 2rem;
    border-left: 1px solid var(--color-line);
  }
  .entry-dot {
    display: block;
    position: absolute;
    left: -6px;
    top: 8px;
    height: 10px;
    width: 10px;
    border-radius: 9999px;
    background: var(--color-accent);
    box-shadow: 0 0 0 4px var(--color-paper);
  }
}

/* Thanks page */

.thanks {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 1.5rem;
}
.thanks-card {
  max-width: 42rem;
  width: 100%;
  text-align: center;
  padding: 3rem 2rem;
}
.success-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 5rem;
  width: 5rem;
  border-radius: 9999px;
  background: var(--color-success-soft);
  color: var(--color-success);
  font-size: 1.75rem;
  margin-bottom: 2rem;
}
.share-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin: 2.5rem 0;
}
.thanks-card p + p {
  margin-top: 0.75rem;
}
.thanks-note {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-line);
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--color-line);
  background: var(--color-paper);
  padding-block: 4rem;
}
.footer-grid {
  display: grid;
  gap: 2.5rem;
}
@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}
@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
  }
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.footer-brand img {
  height: 2.5rem;
  width: 2.5rem;
  border-radius: 0.75rem;
}
.footer-brand-name {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-ink);
}
.footer-tagline {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: var(--color-ink-3);
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin-top: 1rem;
}
.footer-col li + li {
  margin-top: 0.5rem;
}
.footer-col a {
  font-size: 0.875rem;
  color: var(--color-ink-2);
  text-decoration: none;
}
@media (hover: hover) and (pointer: fine) {
  .footer-col a:hover {
    color: var(--color-ink);
  }
}
.footer-bottom {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  font-size: 0.75rem;
  color: var(--color-ink-3);
}

/* Accessibility */

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

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}