/* Colors follow the color-scheme: the system one with the auto theme, the
   chosen one with the light or dark theme. The accent is the cyan termd
   paints inline code with. */
:root {
  color-scheme: light dark;
  --canvas: light-dark(#eef1f5, #080a0e);
  --chrome: light-dark(#f6f8fa, #131820);
  --surface: light-dark(#ffffff, #0d1117);
  --ink: light-dark(#141821, #e6e9ef);
  --muted: light-dark(#5d6776, #8a94a6);
  --rule: light-dark(#d7dde5, #242b36);
  --accent: light-dark(#0e7c86, #3cc4cc);
  --shadow: light-dark(rgb(20 24 33 / .07), rgb(0 0 0 / .45));
  --term-fg: light-dark(#1f2328, #e6edf3);
  --ansi-30: light-dark(#24292f, #484f58);
  --ansi-31: light-dark(#cf222e, #ff7b72);
  --ansi-32: light-dark(#116329, #3fb950);
  --ansi-33: light-dark(#4d2d00, #d29922);
  --ansi-34: light-dark(#0969da, #58a6ff);
  --ansi-35: light-dark(#8250df, #bc8cff);
  --ansi-36: light-dark(#1b7c83, #39c5cf);
  --ansi-37: light-dark(#6e7781, #b1bac4);
  --ansi-90: light-dark(#57606a, #6e7681);
  --ansi-91: light-dark(#a40e26, #ffa198);
  --ansi-92: light-dark(#1a7f37, #56d364);
  --ansi-93: light-dark(#633c01, #e3b341);
  --ansi-94: light-dark(#218bff, #79c0ff);
  --ansi-95: light-dark(#a475f9, #d2a8ff);
  --ansi-96: light-dark(#3192aa, #56d4dd);
  --ansi-97: light-dark(#8c959f, #ffffff);
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "DejaVu Sans Mono", "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --pad: 20px;
}

:root:has(#theme-light:checked) { color-scheme: light; }
:root:has(#theme-dark:checked) { color-scheme: dark; }

* { box-sizing: border-box; }

body {
  margin: 0 auto;
  max-width: 48rem;
  padding: 0 1.25rem;
  background: var(--canvas);
  color: var(--ink);
  font: 16px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
}

::selection { background: color-mix(in srgb, var(--accent) 28%, transparent); }

a { color: var(--accent); text-underline-offset: 3px; }

/* Hero: the name set large in the same monospace as the output. */
.hero { padding: clamp(3rem, 12vh, 7rem) 0 2.5rem; }
.hero h1 {
  margin: 0;
  font: 700 clamp(3.5rem, 13vw, 6.5rem)/.9 var(--mono);
  letter-spacing: -.03em;
}
.tagline {
  max-width: 30ch;
  margin: 1.25rem 0 2rem;
  font-size: clamp(1.3rem, 3.2vw, 1.75rem);
  line-height: 1.25;
  letter-spacing: -.015em;
  text-wrap: balance;
}
.actions { display: flex; flex-wrap: wrap; gap: .75rem; }
.install {
  flex: 1 1 22rem;
  min-width: 0;
  margin: 0;
  padding: .8rem 1rem;
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 10px;
  font: 14px/1.4 var(--mono);
  scrollbar-width: thin;
}
.prompt { color: var(--accent); user-select: none; }
.github {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .8rem 1.1rem;
  border-radius: 10px;
  background: var(--ink);
  color: var(--canvas);
  font-weight: 600;
  text-decoration: none;
}
.github:hover { background: color-mix(in srgb, var(--ink) 85%, var(--accent)); }
/* The badge is 20px high; the line keeps that height while it loads, when
   the browser shows the alt text instead. */
.release { min-height: 20px; margin: .75rem 0 0; line-height: 20px; }
.release img { display: block; }

/* The switchers: segmented controls built from radio inputs and labels. */
.controls {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 2rem;
  padding: .75rem 0;
  background: color-mix(in srgb, var(--canvas) 82%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}
.group { display: flex; align-items: center; gap: .6rem; }
.label { color: var(--muted); font-size: .875rem; }
.seg {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  background: var(--chrome);
  border: 1px solid var(--rule);
  border-radius: 10px;
}
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg label {
  padding: .3rem .7rem;
  border-radius: 7px;
  color: var(--muted);
  font: 500 13px/1.2 var(--mono);
  cursor: pointer;
}
.seg label:hover { color: var(--ink); }
.seg input:checked + label {
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 0 0 1px var(--rule), 0 1px 3px var(--shadow);
}
.seg input:focus-visible + label { outline: 2px solid var(--accent); outline-offset: 1px; }

main { padding: 1rem 0 2rem; }
.example { margin: 2.5rem 0; }

/* A terminal window exactly as wide as the chosen number of columns: the
   ruler marks them, output wider than that scrolls, as in less -S. */
.cols-40 { --cols: 40; }
.cols-60 { --cols: 60; }
.cols-80 { --cols: 80; }
.window {
  width: calc(var(--cols) * 1ch + 2 * var(--pad) + 2px);
  max-width: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 12px;
  box-shadow: 0 1px 2px var(--shadow), 0 12px 32px -12px var(--shadow);
  font: 14px/1.2 var(--mono);
}
.titlebar {
  padding: .55rem var(--pad);
  background: var(--chrome);
  border-bottom: 1px solid var(--rule);
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.screen {
  padding: .75rem var(--pad) 1.25rem;
  overflow-x: auto;
  scrollbar-width: thin;
}
.ruler {
  margin-bottom: .75rem;
  color: color-mix(in srgb, var(--muted) 45%, transparent);
  white-space: pre;
}
.ruler b { color: var(--accent); font-weight: 400; }

/* Terminal output. A fixed line-height keeps every line the same height,
   whatever font draws an emoji, and box-drawing lines continuous. */
.term {
  margin: 0;
  color: var(--term-fg);
  font: inherit;
  white-space: pre;
  tab-size: 8;
}
.term a { color: inherit; text-decoration: none; }
/* A grapheme cluster two columns wide takes exactly two cells. */
.term .w { display: inline-block; width: 2ch; text-align: center; }
.term .b { font-weight: bold; }
.term .f { opacity: .6; }
.term .i { font-style: italic; }
.term .u { text-decoration-line: underline; }
.term .s { text-decoration-line: line-through; }
.term .u.s { text-decoration-line: underline line-through; }

/* Width: 80 columns unless another width is checked. */
.cols-40, .cols-60 { display: none; }
:root:has(#width-40:checked) .cols-40,
:root:has(#width-60:checked) .cols-60 { display: block; }
:root:has(#width-40:checked) .cols-80,
:root:has(#width-60:checked) .cols-80 { display: none; }

/* Theme: an example that depends on the highlighting theme has a dark and
   a light rendering; show the one that matches the page. */
.window.light { display: none; }
@media (prefers-color-scheme: light) {
  .window.light { display: block; }
  .window.dark { display: none; }
}
:root:has(#theme-light:checked) .window.light,
:root:has(#theme-dark:checked) .window.dark { display: block; }
:root:has(#theme-light:checked) .window.dark,
:root:has(#theme-dark:checked) .window.light { display: none; }

/* Theme showcase: one window per theme, the one of the checked theme is
   shown. A window takes the background and text colors of the theme
   (inline --win-bg and --win-fg) and its color scheme, so the basic palette
   colors of the dark and light themes suit the window, not the page. */
.showcase { margin: 2.5rem 0; }
.showcase > .group { align-items: flex-start; margin-bottom: 1rem; }
.showcase > .group .label { padding-top: .45rem; white-space: nowrap; }
.showcase .seg { flex-wrap: wrap; }
.showcase .window {
  display: none;
  --win-fg: var(--term-fg);
  background: var(--win-bg);
  border-color: color-mix(in srgb, var(--win-fg) 16%, var(--win-bg));
}
.showcase .titlebar {
  background: color-mix(in srgb, var(--win-fg) 7%, var(--win-bg));
  border-bottom-color: color-mix(in srgb, var(--win-fg) 16%, var(--win-bg));
  color: color-mix(in srgb, var(--win-fg) 60%, var(--win-bg));
}
.showcase .term { color: var(--win-fg); }
.showcase .ruler { color: color-mix(in srgb, var(--win-fg) 25%, var(--win-bg)); }
.showcase .ruler b { color: color-mix(in srgb, var(--win-fg) 55%, var(--win-bg)); }
/* A screenshot page (termd-site -shots): one showcase window on a
   transparent page, without the shadow, which trimming would keep. */
.shot { max-width: none; margin: 0; padding: 0; background: transparent; }
.shot .window { display: block; box-shadow: none; }

footer {
  display: flex;
  gap: 1.5rem;
  padding: 1.5rem 0 3rem;
  border-top: 1px solid var(--rule);
  font-size: .875rem;
}
footer a { color: var(--muted); }
footer a:hover { color: var(--ink); }

@media (prefers-reduced-motion: no-preference) {
  .seg label, .github, footer a { transition: color .15s, background-color .15s, box-shadow .15s; }
}