/* Bitrail — single stylesheet, no external resources. */

:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --fg: #14161a;
  --fg-muted: #5b6472;
  --line: #e3e6ea;
  --accent: #1f6feb;
  --accent-soft: #e8f0fe;
  --code-bg: #f2f4f7;
  --radius: 10px;
  --maxw: 44rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --bg-soft: #161920;
    --fg: #e6e8ec;
    --fg-muted: #97a0ad;
    --line: #262b34;
    --accent: #6ea8fe;
    --accent-soft: #16202f;
    --code-bg: #161920;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem; }

/* ---------- header ---------- */

header.site {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 5;
}

header.site .wrap {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-height: 3.5rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--fg);
  text-decoration: none;
  margin-right: auto;
}

.brand svg { display: block; }

nav.site a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: .94rem;
  margin-left: 1.1rem;
}

nav.site a:hover, nav.site a[aria-current="page"] { color: var(--fg); }

/* ---------- content ---------- */

main { padding: 2.5rem 0 4rem; }

h1 { font-size: 1.85rem; line-height: 1.25; letter-spacing: -.02em; margin: 0 0 .6rem; }
h2 { font-size: 1.25rem; letter-spacing: -.01em; margin: 2.4rem 0 .7rem; }
h3 { font-size: 1.02rem; margin: 1.8rem 0 .5rem; }

p { margin: 0 0 1rem; }

.lede { font-size: 1.1rem; color: var(--fg-muted); margin-bottom: 1.75rem; }

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

ul, ol { padding-left: 1.25rem; margin: 0 0 1rem; }
li { margin: .3rem 0; }

hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }

code {
  background: var(--code-bg);
  border-radius: 5px;
  padding: .12em .38em;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: .88em;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .9rem 1rem;
  overflow-x: auto;
  margin: 0 0 1.25rem;
}

pre code { background: none; padding: 0; font-size: .85rem; line-height: 1.55; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.25rem;
  font-size: .93rem;
  display: block;
  overflow-x: auto;
}

th, td { text-align: left; padding: .5rem .7rem; border-bottom: 1px solid var(--line); }
th { font-weight: 600; white-space: nowrap; }

blockquote {
  margin: 0 0 1.25rem;
  padding: .1rem 0 .1rem 1rem;
  border-left: 3px solid var(--line);
  color: var(--fg-muted);
}

/* ---------- bits ---------- */

.badges { display: flex; flex-wrap: wrap; gap: .4rem; margin: 0 0 1.75rem; }

.badge {
  font-size: .78rem;
  color: var(--fg-muted);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .15rem .6rem;
}

.cards { display: grid; gap: .9rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); margin: 0 0 1.5rem; }

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  background: var(--bg-soft);
}

.card h3 { margin: 0 0 .35rem; font-size: .97rem; }
.card p { margin: 0; font-size: .91rem; color: var(--fg-muted); }

.note {
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: var(--radius);
  padding: .8rem 1rem;
  margin: 0 0 1.25rem;
  font-size: .93rem;
}

.note p:last-child { margin-bottom: 0; }

.toc { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: .9rem 1.1rem; margin: 0 0 2rem; }
.toc p { margin: 0 0 .4rem; font-weight: 600; font-size: .9rem; }
.toc ul { margin: 0; padding-left: 1.1rem; font-size: .93rem; }

/* ---------- footer ---------- */

footer.site {
  border-top: 1px solid var(--line);
  padding: 1.75rem 0 3rem;
  color: var(--fg-muted);
  font-size: .88rem;
}

footer.site .wrap { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: space-between; }
footer.site a { color: var(--fg-muted); }

/* ---------- media ---------- */

.player {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin: 0 0 .6rem;
  display: block;
}

.player-note { font-size: .86rem; color: var(--fg-muted); margin: 0 0 1.75rem; }

.streams { font-size: .9rem; }
.streams td:first-child { white-space: nowrap; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

.sizes { display: flex; gap: 1.5rem; flex-wrap: wrap; margin: 0 0 1.5rem; }
.sizes div { font-size: .9rem; }
.sizes strong { display: block; font-size: 1.3rem; letter-spacing: -.02em; }

/* ---------- wider pages ----------
   The catalogue and the reference tables do not fit the 44rem reading measure
   that suits prose. They opt in rather than widening every page. */

.wrap.wide { max-width: 64rem; }

/* ---------- breadcrumbs ---------- */

.crumbs { font-size: .86rem; color: var(--fg-muted); margin: 1.25rem 0 .5rem; }
.crumbs a { color: inherit; }
.crumbs span { padding: 0 .35rem; opacity: .6; }

/* ---------- filter bar ---------- */

.filter { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; margin: 0 0 1rem; }

.filter input {
  flex: 1 1 14rem;
  min-width: 0;
  font: inherit;
  font-size: .93rem;
  padding: .45rem .7rem;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.filter input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.chips { display: flex; gap: .4rem; flex-wrap: wrap; margin: 0 0 1.25rem; }

.chip, .qualities button, .copy {
  font: inherit;
  font-size: .82rem;
  line-height: 1.4;
  padding: .3rem .6rem;
  color: var(--fg-muted);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
}

.chip:hover, .qualities button:hover, .copy:hover { color: var(--fg); border-color: var(--fg-muted); }

.chip.on, .qualities button.on {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: var(--accent);
}

.count { font-size: .86rem; color: var(--fg-muted); }

/* ---------- stream cards ---------- */

.card .tags { display: flex; gap: .35rem; flex-wrap: wrap; margin: .6rem 0 0; }

.card .tags span {
  font-size: .74rem;
  letter-spacing: .02em;
  padding: .12rem .45rem;
  border-radius: 999px;
  color: var(--fg-muted);
  background: var(--bg);
  border: 1px solid var(--line);
}

.card .meta {
  font-size: .8rem;
  color: var(--fg-muted);
  margin: .55rem 0 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.card a.more { font-size: .88rem; display: inline-block; margin: .6rem 0 0; }

/* ---------- quality switcher and copyable URLs ---------- */

.qualities { display: flex; gap: .4rem; flex-wrap: wrap; margin: 0 0 .6rem; }

.urls { margin: 0 0 1.5rem; }

.urls div {
  display: flex;
  gap: .5rem;
  align-items: center;
  padding: .4rem 0;
  border-bottom: 1px solid var(--line);
}

.urls div:last-child { border-bottom: 0; }

.urls code {
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: auto;
  white-space: nowrap;
  font-size: .84rem;
}

.copy { flex: 0 0 auto; border-radius: var(--radius); }
.copy.ok { color: var(--accent); border-color: var(--accent); }

/* ---------- key/value reference table ---------- */

.kv { width: 100%; border-collapse: collapse; font-size: .9rem; margin: 0 0 1.5rem; }
.kv th, .kv td { text-align: left; padding: .45rem .6rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.kv th { width: 12rem; font-weight: 600; color: var(--fg-muted); }
.kv tr:last-child th, .kv tr:last-child td { border-bottom: 0; }

/* ---------- status board ---------- */

.dot { display: inline-block; width: .55rem; height: .55rem; border-radius: 50%; margin-right: .45rem; vertical-align: baseline; }
.dot.up { background: #2f8f5b; }
.dot.warn { background: #a8710a; }

/* ---------- throughput probe ---------- */

.speed { border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.1rem; background: var(--bg-soft); margin: 0 0 1.5rem; }
.speed .row { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; }

.speed button {
  font: inherit;
  font-size: .9rem;
  padding: .4rem .9rem;
  color: #fff;
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  cursor: pointer;
}

.speed button[disabled] { opacity: .55; cursor: default; }
.speed output { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9rem; }

.speed .track { height: .35rem; background: var(--line); border-radius: 999px; overflow: hidden; margin: .85rem 0 0; }
.speed .track i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .15s linear; }

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