/* The home page and the user guide on GitHub Pages. Colors follow the app's
   (src/app/app.css), so the site and the app look like one thing. */

:root {
  --fg: #1b1f24;
  --muted: #5b6470;
  --bg: #ffffff;
  --panel: #f5f7fa;
  --line: #d9dee5;
  --accent: #1f4e79;
  --accent-fg: #ffffff;
  font-family:
    system-ui,
    -apple-system,
    'Segoe UI',
    Roboto,
    sans-serif;
  line-height: 1.55;
  color: var(--fg);
  background: var(--bg);
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e6e9ed;
    --muted: #9aa4b1;
    --bg: #15181c;
    --panel: #1e2228;
    --line: #333a43;
    --accent: #7fb2e5;
    --accent-fg: #10141a;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
}

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

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ---- top bar ---- */

.top {
  border-bottom: 1px solid var(--line);
}

.top .wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 56px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--fg);
  text-decoration: none;
}

.brand img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.top nav {
  margin-left: auto;
  display: flex;
  gap: 16px;
}

.top nav a {
  text-decoration: none;
}

/* ---- home page ---- */

.hero {
  padding: 48px 0 32px;
}

.hero h1 {
  font-size: 2rem;
  line-height: 1.2;
  margin: 0 0 12px;
}

.hero p {
  font-size: 1.1rem;
  color: var(--muted);
  margin: 0 0 24px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 6px;
  border: 1px solid var(--accent);
  font-weight: 600;
  text-decoration: none;
}

.button.primary {
  background: var(--accent);
  color: var(--accent-fg);
}

section {
  padding: 8px 0 16px;
}

section h2 {
  font-size: 1.25rem;
  margin: 16px 0 8px;
}

.points {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 12px;
  padding: 0;
  list-style: none;
}

.points li {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
}

.points strong {
  display: block;
  margin-bottom: 2px;
}

.note {
  color: var(--muted);
}

footer {
  border-top: 1px solid var(--line);
  margin-top: 32px;
  padding: 16px 0 32px;
  color: var(--muted);
  font-size: 0.9rem;
}

footer p {
  margin: 4px 0;
}

/* ---- user guide ---- */

.guide {
  padding: 24px 0;
}

.guide h1 {
  font-size: 1.8rem;
}

.guide h2 {
  margin-top: 40px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.guide h2,
.guide h3 {
  scroll-margin-top: 16px;
}

.guide table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.95rem;
  display: block;
  overflow-x: auto;
}

.guide th,
.guide td {
  text-align: left;
  border: 1px solid var(--line);
  padding: 6px 8px;
  vertical-align: top;
}

.guide th {
  background: var(--panel);
}

.guide code {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0 4px;
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

.guide hr {
  display: none;
}