/* Root variables and resets */
:root {
  --bg: #0b0f10;
  --panel: #0f1416;
  --panel-alt: #11181c;
  --text: #e6f1ef;
  --muted: #c2d5d1;
  --link: #24b394;
  --link-contrast: #0b8b6f;
  --accent: #27c79f;
  --accent-2: #b4f6e6;
  --chip: #18332e;
  --border: #24403a;
  --warn: #ffd166;
  --shadow: rgba(0,0,0,0.3);
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f8faf9;
    --panel: #ffffff;
    --panel-alt: #f5fbf9;
    --text: #0d1b18;
    --muted: #3a5a52;
    --link: #0b8b6f;
    --link-contrast: #066e58;
    --accent: #0b8b6f;
    --accent-2: #dff7f1;
    --chip: #e9fbf6;
    --border: #cfe8e1;
    --shadow: rgba(0,0,0,0.06);
  }
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 600px at 70% -10%, rgba(39,199,159,0.25), transparent 60%) , var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5rem; }
p { margin: 0 0 1rem; }
ul { padding-left: 1.2rem; }
/* Layout */
.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}
.narrow { width: min(720px, 92vw); }
.section {
  padding: 4rem 0;
}
.section.alt {
  background: var(--panel-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.center { text-align: center; }
.sr-only {
  position: absolute !important;
  height: 1px; width: 1px;
  overflow: hidden; clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
}
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: #000; color: #fff; padding: .5rem .75rem; z-index: 1000;
}
.skip-link:focus { left: .5rem; top: .5rem; }
/* Header (GitHub-like dark header) */
.site-header {
  position: sticky; top: 0; z-index: 200;
  background: #0d1117;
  border-bottom: 1px solid #30363d;
}
.site-header.small { position: static; }
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: .75rem 0;
}
.brand { display: inline-flex; gap: .5rem; align-items: center; color: #c9d1d9; text-decoration: none; }
.brand:hover { text-decoration: none; color: #fff; }
.brand-logo { width: 28px; height: 28px; display: block; object-fit: contain; flex-shrink: 0; }
.brand-name { font-weight: 700; letter-spacing: .2px; }
.site-nav ul {
  display: flex; gap: .5rem; align-items: center;
  list-style: none; margin: 0; padding: 0;
}
.site-nav a { padding: .5rem .75rem; border-radius: .5rem; color: #c9d1d9; }
.site-nav a:hover { background: #21262d; text-decoration: none; }
.nav-toggle {
  display: none; background: transparent; border: 0; cursor: pointer;
}
.nav-toggle .nav-toggle-bar {
  width: 24px; height: 2px; background: var(--text); display: block; position: relative;
}
.nav-toggle .nav-toggle-bar::before, .nav-toggle .nav-toggle-bar::after {
  content: ""; position: absolute; left: 0; right: 0; height: 2px; background: var(--text);
}
.nav-toggle .nav-toggle-bar::before { top: -6px; }
.nav-toggle .nav-toggle-bar::after { top: 6px; }
@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .site-nav { position: absolute; top: 100%; right: 0; background: var(--panel); border: 1px solid var(--border); border-top: 0; border-radius: 0 0 .75rem .75rem; box-shadow: 0 8px 24px var(--shadow); transform-origin: top right; transform: scaleY(0); transition: .18s ease; }
  .site-nav[aria-hidden="true"] { display: none; }
  .site-nav.open { transform: scaleY(1); }
  .site-nav ul { flex-direction: column; align-items: stretch; min-width: 220px; padding: .5rem; }
  .site-nav a { display: block; }
}
/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: .5rem .9rem; border-radius: .6rem; font-weight: 600; text-decoration: none;
  box-shadow: 0 2px 0 rgba(0,0,0,0.05);
}
.btn:hover { text-decoration: none; border-color: color-mix(in oklab, var(--border), var(--accent) 35%); }
.btn-ghost { background: transparent; }
.btn-primary {
  background: linear-gradient(180deg, var(--accent), var(--link-contrast));
  color: #07221b; border: 0;
}
.btn-lg { padding: .7rem 1.1rem; font-size: 1.05rem; }
/* Subnav / page head (GitHub-like) */
.page-head {
  border-bottom: 1px solid #30363d;
  background: #0d1117;
  padding: 1rem 0;
}
.subnav {
  display: flex; gap: .5rem; align-items: center; flex-wrap: wrap;
}
.subnav .btn { background: #21262d; border-color: #30363d; color: #c9d1d9; }
.subnav .btn:hover { background: #30363d; }
/* Hero */
.hero {
  padding: 4.5rem 0 3.5rem;
  background:
    radial-gradient(900px 420px at 10% -10%, rgba(180,246,230,0.16), transparent 60%),
    radial-gradient(600px 320px at 90% 0%, rgba(39,199,159,0.18), transparent 60%);
}
.hero-inner { display: grid; grid-template-columns: 1.2fr 1fr; gap: 2rem; align-items: center; }
.hero h1 { font-size: clamp(1.8rem, 2.8vw + 1rem, 3rem); margin-bottom: .75rem; }
.lede { font-size: 1.125rem; color: var(--muted); }
.hero-cta { display: flex; gap: .75rem; flex-wrap: wrap; margin: 1rem 0; }
.tiny-note { font-size: .85rem; color: var(--muted); margin-top: .5rem; }
.hero-art { display: flex; flex-direction: column; justify-content: center; align-items: center; }
.hero-tagline { margin-top: .75rem; font-size: 1.15rem; font-weight: 600; color: var(--muted, #4b5b55); text-align: center; letter-spacing: .01em; }
.hero-logo {
  width: min(28rem, 92%);
  height: auto;
  display: block;
  filter: drop-shadow(0 18px 40px rgba(0, 0, 0, 0.45));
}
.hero-art .art-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: .9rem;
  padding: 1rem;
  box-shadow: 0 12px 28px var(--shadow);
}
.hero-art .art-row { display: flex; gap: .5rem; margin: .25rem 0; flex-wrap: wrap; }
.chip {
  font-size: .85rem; line-height: 1; padding: .5rem .6rem; border-radius: 999px;
  background: var(--chip); border: 1px solid var(--border); color: var(--text);
}
.chip-accent { background: color-mix(in oklab, var(--accent-2) 60%, transparent); color: #024236; border-color: color-mix(in oklab, var(--accent) 45%, var(--border)); }
/* Cards & grids */
.grid { display: grid; gap: 1rem; }
.features { grid-template-columns: repeat(4, 1fr); }
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: .9rem;
  padding: 1rem 1.1rem;
  box-shadow: 0 8px 20px var(--shadow);
}
.card h3 { margin-bottom: .25rem; }
.note { color: var(--muted); }
@media (max-width: 1100px) { .features { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .features { grid-template-columns: 1fr; } .hero-inner { grid-template-columns: 1fr; } }
/* Architecture diagram */
.arch { grid-template-columns: 1.1fr 1fr; gap: 1.5rem; }
.arch-col { min-width: 0; }
.checklist { list-style: none; padding-left: 0; }
.checklist li { position: relative; padding-left: 1.5rem; margin: .35rem 0; }
.checklist li::before {
  content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 900;
}
.diagram {
  display: grid; gap: .35rem; background: var(--panel); border: 1px solid var(--border);
  border-radius: .9rem; padding: 1rem; text-align: center;
}
.diagram-row { display: flex; justify-content: center; align-items: center; gap: .5rem; }
.badge { background: var(--chip); border: 1px solid var(--border); border-radius: .6rem; padding: .35rem .6rem; }
.badge.accent { background: color-mix(in oklab, var(--accent-2) 60%, transparent); color: #024236; border-color: color-mix(in oklab, var(--accent) 45%, var(--border)); }
.arrow { color: var(--muted); }
/* Pricing */
.pricing {
  display: grid; gap: 1rem; grid-template-columns: repeat(2, 1fr); align-items: stretch;
}
.price-card { text-align: left; }
.price-card.highlight { border-color: color-mix(in oklab, var(--accent), var(--border) 25%); }
.price { font-size: 2rem; margin: .2rem 0 1rem; }
.price-number { font-size: 2.2rem; font-weight: 800; }
.price-unit { color: var(--muted); }
@media (max-width: 860px) { .pricing { grid-template-columns: 1fr; } }
/* Forms */
.form label { display: block; font-weight: 600; margin: .6rem 0 .3rem; }
.form input[type="text"], .form input[type="email"], .form input[type="number"],
.form input[type="password"], .form select, .form textarea {
  width: 100%; padding: .6rem .7rem; border: 1px solid var(--border); border-radius: .6rem;
  background: var(--panel-alt); color: var(--text); font: inherit;
}
.input-with-prefix { position: relative; }
.input-with-prefix > span {
  position: absolute; left: .6rem; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none;
}
.input-with-prefix > input { padding-left: 1.4rem; }
.choices { display: flex; gap: .75rem; margin-top: .35rem; flex-wrap: wrap; }
.choice { display: inline-flex; align-items: center; gap: .4rem; }
.form-actions { display: flex; gap: .6rem; margin-top: 1rem; flex-wrap: wrap; }
.confirmation.hidden, .form.hidden { display: none; }
.summary dl { display: grid; grid-template-columns: max-content 1fr; gap: .35rem 1rem; }
.summary dt { color: var(--muted); }
.summary dd { margin: 0; }
/* Footer */
.site-footer { padding: 2rem 0 3rem; border-top: 1px solid #30363d; background: #0d1117; }
.footer-inner { display: grid; grid-template-columns: 1fr auto auto; gap: 1rem; align-items: start; }
.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: .35rem; }
.legal { text-align: center; color: var(--muted); margin-top: 1.2rem; }
@media (max-width: 880px) {
  .footer-inner { grid-template-columns: 1fr; }
}

/* Accessibility helpers */
.btn:focus, a:focus, input:focus, button:focus { outline: 3px solid color-mix(in oklab, var(--accent) 55%, white 25%); outline-offset: 2px; }
.disclaimer { color: color-mix(in oklab, var(--muted) 85%, #ffefc0 15%); background: color-mix(in oklab, var(--warn) 15%, transparent); border-left: 3px solid var(--warn); padding: .6rem .75rem; border-radius: .4rem; }

/* GitHub-like layout and orgs */
.page { padding: 1rem 0 3rem; }
.layout-2col { display: grid; grid-template-columns: 260px 1fr; gap: 1.2rem; }
@media (max-width: 900px) { .layout-2col { grid-template-columns: 1fr; } }
.sidebar { position: relative; }
.sidebar .card { position: sticky; top: 5rem; }
.content { min-width: 0; }
.org-list { display: grid; gap: .8rem; }
.org-card {
  display: grid; grid-template-columns: 48px 1fr auto; gap: .8rem; align-items: center;
  background: var(--panel); border: 1px solid var(--border); border-radius: .6rem; padding: .6rem .8rem;
}
.org-avatar {
  width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center;
  background: #1f6feb; color: white; font-weight: 800; letter-spacing: .3px;
}
.org-meta h3 { margin: 0; }
.org-meta .muted { color: var(--muted); font-size: .9rem; }
.org-actions .btn { padding: .35rem .6rem; }
.repo-list { list-style: none; padding: 0; margin: 0; display: grid; gap: .6rem; }
.repo-item {
  display: grid; grid-template-columns: 1fr auto; align-items: center;
  background: var(--panel); border: 1px solid var(--border); border-radius: .6rem; padding: .6rem .8rem;
}
.repo-item .badge { font-size: .75rem; }

/* Download CLI */
.download-hero {
  padding: 2rem 0 1rem;
  border-bottom: 1px solid #30363d;
  background: #0d1117;
  color: #c9d1d9;
}
.download-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
@media (max-width: 860px) { .download-grid { grid-template-columns: 1fr; } }
.download-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: .8rem;
  padding: 1rem;
  box-shadow: 0 8px 16px var(--shadow);
}
.download-card h3 { margin: 0 0 .25rem; }
.download-card .muted { color: var(--muted); margin-bottom: .75rem; }
.download-card .btn { margin-top: .35rem; }
.download-card.recommended {
  border-color: color-mix(in oklab, var(--accent), var(--border) 20%);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 15%, transparent), 0 8px 16px var(--shadow);
}
.recommend-badge { margin-left: .5rem; background: #238636; color: #e6ffed; border-color: #2ea043; }
.downloads-footer { margin-top: 1rem; color: var(--muted); }
.download-steps { margin-top: 1.25rem; }



/* Getting Started docs */
.docs-content h2 { margin-top: 2rem; }
.docs-content pre { background: #0f172a; color: #e2e8f0; padding: 1rem; border-radius: 8px; overflow-x: auto; font-size: 0.9rem; line-height: 1.5; }
.docs-content code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.92em; }
.docs-content :not(pre) > code { background: rgba(127,127,127,0.15); padding: 0.1em 0.35em; border-radius: 4px; }
.docs-content ul { padding-left: 1.25rem; }

/* Pull request conversation + unified diff */
.pr-subtabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); margin: 0 0 1rem; }
.pr-subtabs a { padding: .55rem .95rem; color: var(--text); border-bottom: 2px solid transparent; font-weight: 600; }
.pr-subtabs a:hover { text-decoration: none; color: var(--accent); }
.pr-subtabs a[aria-current="page"] { border-bottom-color: var(--accent); color: var(--accent); }
.pr-title-box .form input[type="text"], .pr-title-box .form textarea,
.pr-add-comment textarea, .pr-inline-form textarea { width: 100%; }
.btn-tiny { padding: .15rem .45rem; font-size: .8rem; }