:root {
  --rb-bucket: #C41E3A;
  --rb-bucket-ink: #9B1830;
  --rb-fg: #1f2328;
  --rb-muted: #656d76;
  --rb-border: #d0d7de;
  --rb-canvas: #f6f8fa;
  --rb-surface: #ffffff;
  --rb-link: #0969da;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--rb-surface);
  color: var(--rb-fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a { color: var(--rb-link); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  border-bottom: 1px solid var(--rb-border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--rb-fg);
  font-weight: 600;
}

.brand img { width: 28px; height: 28px; }

.wrap { max-width: 980px; margin: 0 auto; padding: 24px; }

.hero p { max-width: 40rem; color: var(--rb-muted); }

.repo-well {
  background: var(--rb-canvas);
  padding: 16px;
}

.repo-title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.vis-badge {
  border: 1px solid var(--rb-border);
  border-radius: 12px;
  padding: 0 8px;
  font-size: 12px;
  color: var(--rb-muted);
}

.tabs {
  display: flex;
  gap: 16px;
  border-bottom: 1px solid var(--rb-border);
  margin: 16px 0 0;
}

.tabs a {
  padding: 8px 0;
  color: var(--rb-fg);
  border-bottom: 2px solid transparent;
}

.tabs a.active { border-bottom-color: var(--rb-bucket); font-weight: 600; }

.grid {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 16px;
  margin-top: 16px;
}

@media (max-width: 800px) {
  .grid { grid-template-columns: 1fr; }
}

.surface {
  background: var(--rb-surface);
  border: 1px solid var(--rb-border);
  border-radius: 6px;
}

.commit-bar {
  padding: 8px 12px;
  border-bottom: 1px solid var(--rb-border);
  font-size: 14px;
  color: var(--rb-muted);
}

.files { width: 100%; border-collapse: collapse; }
.files td { padding: 8px 12px; border-top: 1px solid var(--rb-border); }
.files .meta { color: var(--rb-muted); font-size: 13px; }

.about { padding: 12px; }
.about h2 { margin: 0 0 8px; font-size: 16px; }
.about p, .about li { color: var(--rb-muted); font-size: 14px; }

.readme { padding: 16px; margin-top: 16px; }

.install {
  display: inline-block;
  background: var(--rb-bucket);
  color: #fff;
  border: 0;
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
}

.install:hover { background: var(--rb-bucket-ink); }

pre.script {
  background: var(--rb-canvas);
  border: 1px solid var(--rb-border);
  border-radius: 6px;
  padding: 12px;
  overflow: auto;
  font-size: 13px;
}

.issue-row, .pull-row {
  padding: 12px;
  border-top: 1px solid var(--rb-border);
}

.pill {
  border: 1px solid var(--rb-border);
  border-radius: 12px;
  padding: 0 8px;
  font-size: 12px;
}

form.stack label { display: block; margin: 8px 0 4px; }
form.stack input, form.stack select, form.stack textarea {
  width: 100%;
  max-width: 28rem;
  padding: 6px 8px;
  border: 1px solid var(--rb-border);
  border-radius: 6px;
}

.muted { color: var(--rb-muted); }
.hidden { display: none; }

/* Landing follows the pi.dev frame: paper grid, sparse uppercase
   nav, centered hero, serif italic stress, mono install box.
   Bucket pages stay on the GitHub chrome above. */
body.landing-page {
  --paper: #ebe7e4;
  --ink: #252f3df5;
  --ink-soft: #384251dc;
  --grid-minor: #252f3d08;
  --grid-major: #252f3d12;
  --grid-cross: #252f3d1d;
  --panel: #f4f2f0;
  --line-soft: #8b847d59;
  --serif: "Newsreader", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
}

body.landing-page::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  --grid-gap: 4px;
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid-minor) 0 1px, transparent 1px var(--grid-gap)),
    linear-gradient(to right, var(--grid-minor) 0 1px, transparent 1px var(--grid-gap)),
    linear-gradient(var(--grid-major) 0 1px, transparent 1px calc(var(--grid-gap) * 5)),
    linear-gradient(to right, var(--grid-major) 0 1px, transparent 1px calc(var(--grid-gap) * 5)),
    linear-gradient(var(--grid-cross) 0 1px, transparent 1px calc(var(--grid-gap) * 5)),
    linear-gradient(to right, var(--grid-cross) 0 1px, transparent 1px calc(var(--grid-gap) * 5));
  background-size:
    var(--grid-gap) var(--grid-gap),
    var(--grid-gap) var(--grid-gap),
    calc(var(--grid-gap) * 5) calc(var(--grid-gap) * 5),
    calc(var(--grid-gap) * 5) calc(var(--grid-gap) * 5),
    calc(var(--grid-gap) * 5) calc(var(--grid-gap) * 5),
    calc(var(--grid-gap) * 5) calc(var(--grid-gap) * 5);
}

body.landing-page .site-header,
body.landing-page .landing-main,
body.landing-page .landing-foot {
  position: relative;
  z-index: 1;
}

body.landing-page .site-header {
  border-bottom: 0;
  padding: 1.1rem 2rem 0;
  background: transparent;
}

body.landing-page .brand {
  color: var(--ink);
  font-family: var(--mono);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.04em;
}

body.landing-page .site-nav {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

body.landing-page .site-nav a {
  color: #252f3db8;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
}

body.landing-page .site-nav a:hover,
body.landing-page .site-nav a.is-active {
  color: var(--ink);
  text-decoration: none;
}

.landing-main {
  max-width: 52rem;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.landing-hero {
  text-align: center;
  padding: 2.5rem 0 3.5rem;
}

.landing-mark {
  width: 88px;
  height: 88px;
  margin: 0 auto 1.75rem;
}

.landing-title {
  margin: 0 auto;
  max-width: 18ch;
  font-family: var(--serif);
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.landing-title-line { display: block; }

.landing-title em {
  font-style: italic;
  font-weight: 400;
  color: var(--rb-bucket);
}

.landing-sub {
  margin: 1.25rem auto 0;
  max-width: 36rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
  line-height: 1.55;
}

.landing-sub code,
.landing-story code {
  font-family: var(--mono);
  font-size: 0.86em;
}

.install-box {
  margin: 2.25rem auto 0;
  max-width: 40rem;
  text-align: left;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  box-shadow: 0 10px 30px #5c57521f;
  overflow: hidden;
}

.install-box > input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.install-tabs {
  display: flex;
  gap: 0.25rem;
  padding: 0.65rem 0.85rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.install-tabs label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #252f3d73;
  padding: 0.35rem 0.55rem 0.55rem;
  cursor: pointer;
}

#tab-curl:checked ~ .install-tabs label[for="tab-curl"],
#tab-skill:checked ~ .install-tabs label[for="tab-skill"] {
  color: var(--ink);
  box-shadow: inset 0 -2px 0 var(--rb-bucket);
}

.install-row {
  display: none;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 0.9rem 1rem;
}

#tab-curl:checked ~ .pane-curl,
#tab-skill:checked ~ .pane-skill {
  display: flex;
}

.install-row pre {
  flex: 1;
  margin: 0;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--ink);
}

.copy-btn {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  padding: 0.35rem 0.55rem;
  cursor: pointer;
}

.copy-btn:hover { border-color: var(--rb-bucket); color: var(--rb-bucket); }

.landing-story {
  max-width: 36rem;
  margin: 0 auto 2.5rem;
}

.landing-story h2 {
  margin: 0 0 0.6rem;
  font-family: var(--serif);
  font-size: 1.7rem;
  font-weight: 400;
}

.landing-story p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.6;
}

.landing-story a { color: var(--rb-bucket-ink); }

.landing-foot {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  padding: 2rem 0 1rem;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: #5c5752c4;
}

.landing-foot a { color: inherit; }