/* BRANDA's website. Colours come from the app's tokens (src/app/theme.css in the BRANDA
   repository) and the logo: teal #0b6e62 / #5ad1c0, mint #91e6ae, green #3fbf86, deep #024b4c. */
:root {
  color-scheme: light dark;
  --canvas: light-dark(#f6f8fb, #111418);
  --surface: light-dark(#ffffff, #191d23);
  --sunken: light-dark(#eef7f3, #14181d);
  --ink: light-dark(#182433, #e5e9ef);
  --muted: light-dark(#5d6a7b, #9fa9b7);
  --line: light-dark(#dce1e7, #2a313b);
  --accent: light-dark(#0b6e62, #5ad1c0);
  --accent-fill: light-dark(#0b6e62, #0d7467);
  --accent-fill-hover: light-dark(#095a50, #108073);
  --accent-soft: light-dark(#e3f4ef, #12302c);
  --on-accent: #ffffff;
  --focus: light-dark(#0b6e62, #6fdccb);
  --deep: #024b4c;
  --mint: #91e6ae;
  --green: #3fbf86;
  --radius: 14px;
  --wrap: 1120px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font: 17px/1.6 var(--font);
}
img { max-width: 100%; height: auto; }
a { color: var(--accent); text-underline-offset: 3px; }
a:focus-visible, .button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.01em; text-wrap: balance; }
h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); margin: 0 0 0.5em; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin: 0 0 0.6em; }
h3 { font-size: 1.15rem; margin: 0 0 0.4em; }
p { margin: 0 0 1em; }
code { font-family: var(--mono); font-size: 0.9em; background: var(--accent-soft); padding: 0.1em 0.35em; border-radius: 5px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 760px; }
.center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: 0.9rem; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 10; }

/* Header and footer */
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-mark { width: 29px; height: 32px; }
.brand-word { width: 116px; height: 24px; display: block; }
.site-nav { display: flex; gap: 4px 20px; flex-wrap: wrap; }
.site-nav a { color: var(--ink); text-decoration: none; font-weight: 500; padding: 6px 0; }
.site-nav a:hover { color: var(--accent); }
.site-nav a[aria-current='page'] { color: var(--accent); box-shadow: inset 0 -2px 0 var(--accent); }
.site-footer { border-top: 1px solid var(--line); margin-top: 64px; padding: 24px 0; color: var(--muted); font-size: 0.9rem; }
.footer-row { display: flex; justify-content: space-between; gap: 8px 24px; flex-wrap: wrap; }
.footer-row p { margin: 0; }

/* Buttons */
.button {
  display: inline-block;
  background: var(--accent-fill);
  color: var(--on-accent);
  text-decoration: none;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: 999px;
  border: 2px solid var(--accent-fill);
}
.button:hover { background: var(--accent-fill-hover); border-color: var(--accent-fill-hover); }
.button.secondary { background: transparent; color: var(--accent); border-color: currentColor; }
.button.secondary:hover { background: var(--accent-soft); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 1.5em; }

/* Home */
.hero {
  padding: 72px 0 64px;
  background:
    radial-gradient(60% 80% at 100% 0%, color-mix(in srgb, var(--mint) 28%, transparent), transparent 70%),
    radial-gradient(50% 60% at 0% 100%, color-mix(in srgb, var(--green) 14%, transparent), transparent 70%);
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 48px; align-items: center; }
.hero-mark { width: 232px; filter: drop-shadow(0 18px 30px color-mix(in srgb, var(--deep) 30%, transparent)); }
.eyebrow { color: var(--accent); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.8rem; }
.lede { font-size: 1.2rem; max-width: 640px; }
section { padding: 56px 0; }
.band { background: var(--sunken); }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; margin-top: 32px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.card p:last-child { margin-bottom: 0; }
.closing { padding-bottom: 24px; }

/* Inner pages */
.page { padding-top: 48px; }
.page > h1 { margin-bottom: 0.8em; }
.download-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-bottom: 32px; }
.download-card.is-pending { background: transparent; border-style: dashed; }
.hash { display: block; overflow-wrap: anywhere; padding: 8px; }
details summary { cursor: pointer; color: var(--accent); font-weight: 500; }
.prose { max-width: 760px; }
.prose h2 { margin-top: 1.6em; }
.prose li { margin-bottom: 0.4em; }
.release { border-top: 1px solid var(--line); padding: 28px 0 8px; }
.release h2 { margin: 0 0 0.2em; }
.release h2 a { color: inherit; text-decoration: none; }
.doc-list { list-style: none; padding: 0; display: grid; gap: 16px; max-width: 760px; }
.doc-list li { display: grid; gap: 2px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.doc-list a { font-weight: 600; font-size: 1.1rem; }
.doc-layout { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 48px; }
.doc-nav ul { list-style: none; padding: 0; margin: 0; position: sticky; top: 96px; }
.doc-nav li { margin-bottom: 8px; }
.doc-nav a { text-decoration: none; color: var(--muted); }
.doc-nav a[aria-current='page'] { color: var(--accent); font-weight: 600; }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .hero { padding: 40px 0; }
  .hero-grid { grid-template-columns: 1fr; gap: 24px; }
  .hero-mark { display: none; }
  section { padding: 40px 0; }
  .doc-layout { grid-template-columns: 1fr; gap: 16px; }
  .doc-nav ul { position: static; display: flex; flex-wrap: wrap; gap: 4px 16px; }
}

@media (prefers-reduced-motion: no-preference) {
  .button, .site-nav a { transition: background-color 0.15s, color 0.15s; }
}