/*
 * verfüg.bar landing pages — the Liquid Glass look of the docs site, without
 * Infima. Each site's site.css sets the --accent-* and --blob-* raw colors;
 * everything here derives from them.
 */

:root {
  color-scheme: light dark;

  --font: system-ui, -apple-system, 'SF Pro Text', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --font-display: system-ui, -apple-system, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;

  /* Raw colors; site.css overrides the accent and blobs. */
  --accent-light: #007aff;
  --accent-dark: #0a84ff;
  --on-accent-light: #fff;
  --on-accent-dark: #fff;
  --blob-1: rgb(90 200 250 / 0.55);
  --blob-2: rgb(191 90 242 / 0.4);
  --blob-3: rgb(94 92 230 / 0.4);

  --bg: #eef1f8;
  --text: #0f172a;
  --muted: #475569;
  --accent: var(--accent-light);
  --on-accent: var(--on-accent-light);

  --glass-fill: rgb(255 255 255 / 0.45);
  --glass-sheen: linear-gradient(180deg, rgb(255 255 255 / 0.4), rgb(255 255 255 / 0) 45%);
  --glass-filter: blur(22px) saturate(180%);
  --glass-rim: inset 0 1px 0 rgb(255 255 255 / 0.85), inset 0 -1px 1px rgb(255 255 255 / 0.3),
    inset 0 0 0 1px rgb(255 255 255 / 0.35);
  --glass-shadow: 0 1px 2px rgb(15 23 42 / 0.06), 0 10px 30px -6px rgb(15 23 42 / 0.14),
    0 30px 60px -20px rgb(15 23 42 / 0.18);
  --radius: 1.5rem;
  --radius-xl: 2.25rem;

  @media (prefers-color-scheme: dark) {
    --bg: #0a0c16;
    --text: #e8eaf2;
    --muted: #9aa3b8;
    --accent: var(--accent-dark);
    --on-accent: var(--on-accent-dark);

    --glass-fill: rgb(30 32 46 / 0.5);
    --glass-sheen: linear-gradient(180deg, rgb(255 255 255 / 0.08), rgb(255 255 255 / 0) 45%);
    --glass-rim: inset 0 1px 0 rgb(255 255 255 / 0.16), inset 0 -1px 1px rgb(255 255 255 / 0.04),
      inset 0 0 0 1px rgb(255 255 255 / 0.08);
    --glass-shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 10px 30px -6px rgb(0 0 0 / 0.45),
      0 30px 60px -20px rgb(0 0 0 / 0.5);
  }

  accent-color: var(--accent);
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  /* Anchors land below the sticky top bar. */
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: 400 1.0625rem/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
}

/* The light field the glass bends. */
body::before {
  content: '';
  position: fixed;
  inset: -10vmax;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(40vmax 34vmax at 12% 8%, var(--blob-1), transparent 70%),
    radial-gradient(36vmax 30vmax at 92% 18%, var(--blob-2), transparent 70%),
    radial-gradient(44vmax 36vmax at 70% 95%, var(--blob-3), transparent 70%);
  filter: blur(10px);
}

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
}

:focus-visible {
  outline: 2.5px solid var(--accent);
  outline-offset: 3px;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

main {
  flex: 1;
  width: min(72rem, 100% - 2rem);
  margin-inline: auto;
}

/* Glass surfaces */

.glass {
  position: relative;
  background: var(--glass-sheen), var(--glass-fill);
  -webkit-backdrop-filter: var(--glass-filter);
  backdrop-filter: var(--glass-filter);
  box-shadow: var(--glass-rim), var(--glass-shadow);
  border-radius: var(--radius);
}

/* Without backdrop-filter the fill has to carry the contrast on its own. */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .glass {
    --glass-fill: color-mix(in oklab, var(--bg) 88%, transparent);
  }
}

.panel {
  padding: clamp(1.25rem, 3vw, 2rem);
}

/* Top bar */

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 0.75rem 1rem 0;
}

.pill {
  display: flex;
  align-items: center;
  gap: 0.5rem 1rem;
  width: min(72rem, 100%);
  margin-inline: auto;
  padding: 0.5rem 0.5rem 0.5rem 1rem;
  border-radius: 999px;
}

.brand,
.here {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
  font-weight: 650;
  text-decoration: none;
}

.crumb {
  color: var(--muted);
  margin-inline: -0.4rem;
}

.spacer {
  flex: 1;
}

.navlink {
  color: var(--muted);
  font-size: 0.95rem;
  text-decoration: none;
}

.navlink:hover {
  color: var(--text);
}

@media (width < 40rem) {
  .navlink {
    display: none;
  }
}

/* On a phone an app page's bar keeps the logo, the app and its button. */
@media (width < 30rem) {
  .pill:has(.here) .brand-name,
  .pill:has(.here) .crumb {
    display: none;
  }
}

/* Buttons */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgb(255 255 255 / 0.28), rgb(255 255 255 / 0) 55%),
    var(--accent);
  color: var(--on-accent);
  font-weight: 650;
  text-decoration: none;
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 0.45), 0 8px 24px -8px color-mix(in oklab, var(--accent) 70%, transparent);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 0.45), 0 12px 30px -8px color-mix(in oklab, var(--accent) 80%, transparent);
}

.button.small {
  padding: 0.4rem 1rem;
  font-size: 0.95rem;
}

.button.large {
  padding: 0.95rem 1.9rem;
  font-size: 1.15rem;
}

.button.quiet {
  background: var(--glass-sheen), var(--glass-fill);
  color: var(--text);
  box-shadow: var(--glass-rim), 0 6px 18px -8px rgb(15 23 42 / 0.25);
}

@media (prefers-reduced-motion: reduce) {
  .button {
    transition: none;
  }

  .button:hover {
    transform: none;
  }
}

/* Hero */

.hero {
  display: grid;
  justify-items: center;
  text-align: center;
  padding-block: clamp(3rem, 9vw, 6.5rem) clamp(2rem, 5vw, 3.5rem);
}

.hero .icon {
  width: clamp(7rem, 18vw, 10rem);
  height: auto;
  filter: drop-shadow(0 18px 30px rgb(15 23 42 / 0.25)) drop-shadow(0 4px 8px rgb(15 23 42 / 0.12));
}

.hero h1 {
  margin: 1.5rem 0 0.25rem;
  font-size: clamp(2.75rem, 8vw, 4.75rem);
  font-weight: 800;
}

.hero .tagline {
  max-width: 40rem;
  margin: 0.5rem 0 2rem;
  color: var(--muted);
  font-size: clamp(1.15rem, 2.4vw, 1.4rem);
  line-height: 1.45;
}

/* Download block */

.download {
  display: grid;
  justify-items: center;
  gap: 0.9rem;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.35rem 0.9rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.badge {
  padding: 0.15rem 0.65rem;
  border-radius: 999px;
  background: color-mix(in oklab, var(--accent) 14%, transparent);
  color: var(--text);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.formats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.9rem;
}

.formats span {
  color: var(--muted);
}

/* Feature grid */

.section-title {
  margin: 0 0 1.25rem;
  font-size: clamp(1.75rem, 4vw, 2.4rem);
  text-align: center;
}

.features {
  padding-block: 2rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(17rem, 100%), 1fr));
  gap: 1.1rem;
}

.card {
  padding: 1.4rem 1.5rem;
}

.card h3 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.45rem;
  font-size: 1.15rem;
}

.card h3 .glyph {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.65rem;
  background: color-mix(in oklab, var(--accent) 16%, transparent);
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

/* Changelog */

.changelog {
  padding-block: 2rem 1rem;
}

.changelog .panel {
  padding: 0.5rem clamp(1rem, 3vw, 1.75rem);
}

.changelog details + details {
  border-top: 1px solid color-mix(in oklab, var(--muted) 22%, transparent);
}

.changelog summary {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  padding: 0.9rem 0;
  cursor: pointer;
  list-style: none;
}

.changelog summary::-webkit-details-marker {
  display: none;
}

.changelog summary::before {
  content: '';
  align-self: center;
  width: 0.5rem;
  height: 0.5rem;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(-45deg);
  transition: transform 0.15s ease;
}

.changelog details[open] > summary::before {
  transform: rotate(45deg);
}

.changelog .version {
  font-weight: 700;
  font-size: 1.1rem;
  font-variant-numeric: tabular-nums;
}

.changelog time {
  color: var(--muted);
  font-size: 0.9rem;
}

.notes {
  padding: 0 0 1rem 1.4rem;
  font-size: 0.97rem;
}

.notes h4 {
  margin: 1rem 0 0.35rem;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.notes h4:first-child {
  margin-top: 0;
}

.notes ul {
  margin: 0;
  padding-left: 1.2rem;
}

.notes li + li {
  margin-top: 0.4rem;
}

.notes code {
  padding: 0.05em 0.35em;
  border-radius: 0.4em;
  background: color-mix(in oklab, var(--muted) 16%, transparent);
  font-size: 0.9em;
}

/* Footer */

.footer {
  padding: 3rem 1rem 2.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer p {
  margin: 0.3rem 0;
}

.footer a {
  color: inherit;
}

.footer .fine {
  font-size: 0.85rem;
  opacity: 0.8;
}