/* The layout follows the app pages of apps.gnome.org, and the colors
   follow Libadwaita: a light window, white cards with rounded corners,
   boxed lists of rows and pill buttons. */
:root {
  --window: #fafafb;
  --card: #ffffff;
  --fg: rgba(0, 0, 6, 0.8);
  --strong: #1e1e24;
  --dim: rgba(0, 0, 6, 0.55);
  --border: rgba(0, 0, 6, 0.07);
  --accent-bg: #3584e4;
  --accent-bg-hover: #4a90e8;
  --accent: #1c71d8;
  --button: rgba(0, 0, 6, 0.08);
  --button-hover: rgba(0, 0, 6, 0.12);
  --row-hover: rgba(0, 0, 6, 0.03);
  --success: #26a269;
  --warning: #c88800;
  --code: #f2f2f4;
  --headerbar: rgba(250, 250, 251, 0.85);
  --card-shadow: 0 0 0 1px rgba(0, 0, 6, 0.03), 0 1px 3px 1px rgba(0, 0, 6, 0.07), 0 2px 6px 2px rgba(0, 0, 6, 0.03);
}

@media (prefers-color-scheme: dark) {
  :root {
    --window: #222226;
    --card: #2e2e32;
    --fg: #ffffff;
    --strong: #ffffff;
    --dim: rgba(255, 255, 255, 0.6);
    --border: rgba(0, 0, 6, 0.36);
    --accent: #78aeed;
    --button: rgba(255, 255, 255, 0.1);
    --button-hover: rgba(255, 255, 255, 0.15);
    --row-hover: rgba(255, 255, 255, 0.04);
    --success: #8ff0a4;
    --warning: #f8e45c;
    --code: #1d1d20;
    --headerbar: rgba(34, 34, 38, 0.85);
    --card-shadow: 0 0 0 1px rgba(0, 0, 6, 0.09), 0 1px 3px 1px rgba(0, 0, 6, 0.18), 0 2px 6px 2px rgba(0, 0, 6, 0.09);
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 64px;
}

body {
  margin: 0;
  background: var(--window);
  color: var(--fg);
  font-family: "Adwaita Sans", "Inter", "Cantarell", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

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

img {
  max-width: 100%;
}

h1, h2, h3 {
  color: var(--strong);
  line-height: 1.25;
}

/* Header bar */

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--headerbar);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 16px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--strong);
  font-weight: 700;
  text-decoration: none;
}

.topbar nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

/* Language menu. Each page lists every translation, with hreflang, and
   the head of each page lists them again as alternate links, so that a
   later script or server rule can pick the language of the browser. */

.lang-menu {
  position: relative;
}

.lang-menu summary {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 6px 10px;
  border-radius: 6px;
}

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

.lang-menu summary:hover,
.lang-menu[open] summary {
  background: var(--button);
}

.lang-menu summary:focus-visible {
  outline: 2px solid var(--accent-bg);
  outline-offset: 2px;
}

.lang-menu summary svg {
  width: 16px;
  height: 16px;
}

.lang-list {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  min-width: 200px;
  max-height: 70vh;
  overflow-y: auto;
  list-style: none;
  margin: 0;
  padding: 6px;
  background: var(--card);
  border-radius: 12px;
  box-shadow: var(--card-shadow);
}

.lang-list a {
  display: block;
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--fg);
  text-decoration: none;
}

.lang-list a:hover {
  background: var(--row-hover);
}

.lang-list a[aria-current="page"] {
  font-weight: 700;
  color: var(--accent);
}

.topbar nav a {
  color: var(--fg);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 6px 10px;
  border-radius: 6px;
}

.topbar nav a:hover {
  background: var(--button);
}

/* Page */

.page {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 16px;
}

.page > section {
  margin-top: 48px;
}

.page h2 {
  font-size: 1.15rem;
  font-weight: 800;
  margin: 0 0 12px;
}

.section-intro {
  margin: -4px 0 14px;
  color: var(--dim);
}

/* App header */

.page > .app-header {
  margin-top: 0;
  padding: 56px 0 8px;
  text-align: center;
}

.logo {
  max-width: 440px;
  margin: 0 auto;
}

.logo img {
  display: block;
  width: 100%;
  height: auto;
}


.summary {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 20px 0 0;
  color: var(--strong);
}

.developer {
  margin: 4px 0 24px;
  color: var(--dim);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 999px;
  background: var(--button);
  color: var(--strong);
  font-weight: 700;
  text-decoration: none;
  transition: background-color 0.15s;
}

.pill:hover {
  background: var(--button-hover);
}

.pill.suggested {
  background: var(--accent-bg);
  color: #ffffff;
}

.pill.suggested:hover {
  background: var(--accent-bg-hover);
}

.pill:focus-visible,
.link-row:focus-visible,
.topbar a:focus-visible {
  outline: 2px solid var(--accent-bg);
  outline-offset: 2px;
}

.badges {
  list-style: none;
  padding: 0;
  margin: 28px 0 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.badges li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--card);
  box-shadow: var(--card-shadow);
  font-size: 0.9rem;
  font-weight: 600;
}

.badges svg {
  width: 16px;
  height: 16px;
  color: var(--accent);
}

/* Boxed lists and cards */

.boxed-list,
.card {
  background: var(--card);
  border-radius: 12px;
  box-shadow: var(--card-shadow);
}

.boxed-list {
  list-style: none;
  padding: 0;
  margin: 0;
  overflow: hidden;
}

.boxed-list > li + li {
  border-top: 1px solid var(--border);
}

.row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  min-height: 56px;
}

.link-row {
  color: inherit;
  text-decoration: none;
  transition: background-color 0.15s;
}

.link-row:hover {
  background: var(--row-hover);
}

.row-icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
}

.row-icon svg {
  width: 16px;
  height: 16px;
}

.row-text {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

.row-text strong {
  color: var(--strong);
  font-weight: 600;
}

.row-text span {
  color: var(--dim);
  font-size: 0.9rem;
}

.chevron {
  flex: none;
  width: 16px;
  height: 16px;
  color: var(--dim);
}

.app-row {
  padding: 16px;
  gap: 16px;
}

.app-row img {
  flex: none;
  width: 64px;
  height: 64px;
}

.app-row h3 {
  font-size: 1.05rem;
  margin: 0;
}

.app-row p {
  margin: 2px 0 0;
  color: var(--dim);
}

.card {
  padding: 20px 20px 4px;
}

.card-intro {
  margin: 0 0 20px;
}

.card-note {
  color: var(--dim);
  font-size: 0.9rem;
}

pre {
  margin: 0 0 16px;
  padding: 12px 14px;
  background: var(--code);
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.6;
}

code {
  font-family: "Adwaita Mono", "Source Code Pro", ui-monospace, monospace;
}

/* Description */

.description p {
  margin: 0 0 14px;
}

.features {
  margin: 0 0 14px;
  padding-left: 22px;
}

.features li {
  margin-bottom: 6px;
}

/* Plan */

.timeline {
  list-style: none;
  padding: 0;
  margin: 0;
}

.timeline li {
  position: relative;
  padding: 0 0 18px 30px;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 0.4em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--dim);
  background: var(--card);
}

.timeline li::after {
  content: "";
  position: absolute;
  left: 8px;
  top: calc(0.4em + 14px);
  bottom: 2px;
  width: 2px;
  background: var(--border);
}

.timeline li:last-child::after {
  display: none;
}

.timeline li.done::before {
  background: var(--success);
  border-color: var(--success);
}

.timeline li.current::before {
  background: var(--warning);
  border-color: var(--warning);
}

.timeline h3 {
  font-size: 1rem;
  margin: 0;
}

.timeline p {
  margin: 2px 0 0;
  color: var(--dim);
  font-size: 0.95rem;
}

.tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 1px 8px;
  margin-left: 4px;
  border-radius: 999px;
  vertical-align: 0.12em;
}

.tag.done {
  color: var(--success);
  background: color-mix(in srgb, var(--success) 15%, transparent);
}

.tag.current {
  color: var(--warning);
  background: color-mix(in srgb, var(--warning) 18%, transparent);
}

/* Footer */

.footer {
  max-width: 800px;
  margin: 64px auto 0;
  padding: 24px 16px 48px;
  border-top: 1px solid var(--border);
  color: var(--dim);
  font-size: 0.85rem;
  text-align: center;
}

.footer p {
  margin: 0 0 6px;
}

@media (max-width: 520px) {
  .topbar nav {
    display: none;
  }

  .lang-menu {
    margin-left: auto;
  }

  .summary {
    font-size: 1.15rem;
  }

  .app-row {
    align-items: flex-start;
  }

  .app-row img {
    width: 48px;
    height: 48px;
  }
}

/* The symbols of the row icons: kept in the page, but out of the layout. */
.sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}