/* plebian-os.com — single stylesheet.
   Served under CSP style-src 'self': every rule lives here, no inline styles. */

:root {
  --bg: #0a0e12;
  --bg-raise: #10161d;
  --bg-term: #0d1117;
  --ink: #c9d6e2;
  --ink-dim: #7d8fa0;
  --steel: #aac5da;
  --orange: #ff9f0a;
  --line: #1e2933;
  --line-bright: #2e3f4f;
  --mono: ui-monospace, "Cascadia Code", "JetBrains Mono", "Fira Code",
          Menlo, Consolas, "DejaVu Sans Mono", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 16px;
  line-height: 1.6;
  background-image:
    linear-gradient(rgba(170, 197, 218, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(170, 197, 218, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

a { color: var(--steel); text-decoration: none; }
a:hover { color: #fff; text-decoration: underline; }

.accent { color: var(--orange); }

/* ── header ─────────────────────────────────────────────── */

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  max-width: 960px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.1rem;
  letter-spacing: 0.06em;
  color: var(--ink);
}
.brand:hover { text-decoration: none; color: #fff; }
.brand img { width: 34px; height: 34px; }
.brand b { color: var(--orange); font-weight: 600; }

.nav nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.9rem;
}
.nav nav a { color: var(--ink-dim); }
.nav nav a:hover { color: var(--steel); text-decoration: none; }
.nav nav a.nav-download { color: var(--orange); font-weight: 600; }
.nav nav a.nav-download:hover { color: #fff; }

/* ── hero ───────────────────────────────────────────────── */

.hero {
  max-width: 960px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 2.5rem;
  text-align: center;
}

.hero-logo {
  width: 120px;
  height: 120px;
  margin-bottom: 1.75rem;
}

.hero h1 {
  font-size: clamp(1.5rem, 4.5vw, 2.4rem);
  font-weight: 500;
  color: #fff;
  letter-spacing: 0.01em;
  max-width: 34ch;
  margin: 0 auto 1.25rem;
}

.hero .sub {
  color: var(--ink-dim);
  max-width: 62ch;
  margin: 0 auto 1.5rem;
}
.hero .sub strong { color: var(--steel); font-weight: 600; }

.hero-audio {
  max-width: 720px;
  margin: 0 auto 2.5rem;
  padding: 0.8rem 1rem 0.9rem;
  border: 1px solid var(--line-bright);
  background: var(--bg-raise);
  text-align: left;
}
.audio-copy {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.35rem 0.8rem;
}
.audio-label { color: var(--steel); font-weight: 600; }
.audio-label::before { content: "\25B6  "; color: var(--orange); }
.audio-meta { color: var(--ink-dim); font-size: 0.75rem; }
.hero-audio audio {
  display: block;
  width: 100%;
  height: 42px;
  margin-top: 0.65rem;
  accent-color: var(--orange);
}

/* primary release download */

.download {
  max-width: 720px;
  margin: 0 auto 2.5rem;
  border: 1px solid var(--orange);
  background: var(--bg-term);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}
.download-primary {
  display: block;
  padding: 1.15rem 1.5rem;
  background: var(--orange);
  color: var(--bg);
}
.download-primary:hover {
  background: #ffb340;
  color: #000;
  text-decoration: none;
}
.download-primary:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 3px;
}
.download-label {
  display: block;
  font-size: clamp(1.05rem, 3vw, 1.35rem);
  font-weight: 700;
}
.download-label::before { content: "\2193  "; }
.download-meta {
  display: block;
  margin-top: 0.1rem;
  font-size: 0.8rem;
  font-weight: 600;
  opacity: 0.8;
}
.download-detail {
  padding: 0.75rem 1rem;
  color: var(--ink-dim);
  font-size: 0.72rem;
  text-align: left;
}
.download-detail code {
  color: var(--steel);
  overflow-wrap: anywhere;
}
.download-links {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  margin-top: 0.55rem;
  font-size: 0.8rem;
}

/* flow strip: install → firstboot → pull → session */

.flow {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: stretch;
  gap: 0.5rem;
  margin: 0 auto 2.5rem;
  max-width: 860px;
}

.flow .step {
  flex: 1 1 170px;
  border: 1px solid var(--line);
  background: var(--bg-raise);
  padding: 0.8rem 0.9rem;
  font-size: 0.8rem;
  color: var(--ink-dim);
}
.flow .step em {
  display: block;
  font-style: normal;
  color: var(--steel);
  font-size: 0.9rem;
  margin-bottom: 0.15rem;
}
.flow .arrow {
  align-self: center;
  color: var(--orange);
  font-size: 1rem;
  padding: 0 0.1rem;
}

/* terminal mockup */

.term {
  max-width: 720px;
  margin: 0 auto;
  border: 1px solid var(--line-bright);
  background: var(--bg-term);
  text-align: left;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}
.term-bar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink-dim);
  font-size: 0.75rem;
}
.term-bar i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--line-bright);
}
.term-bar i.dot-active { background: var(--orange); }
.term pre {
  padding: 1rem 1.2rem 1.2rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.75;
  font-family: var(--mono);
}
.term .p { color: var(--orange); }
.term .c { color: var(--ink-dim); }
.term .o { color: var(--steel); }

/* ── sections ───────────────────────────────────────────── */

section { max-width: 960px; margin: 0 auto; padding: 2.75rem 1.5rem; }

section > h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.04em;
  margin-bottom: 1.5rem;
}
section > h2::before { content: "> "; color: var(--orange); }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.card {
  border: 1px solid var(--line);
  background: var(--bg-raise);
  padding: 1.25rem 1.4rem;
}
.card h3 {
  color: var(--steel);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}
.card h3 .n { color: var(--orange); margin-right: 0.4rem; }
.card p { font-size: 0.88rem; color: var(--ink-dim); }
.card p + p { margin-top: 0.6rem; }
.card code {
  color: var(--steel);
  background: var(--bg-term);
  padding: 0.1rem 0.35rem;
  font-size: 0.85em;
}

/* code blocks */

.snippet {
  border: 1px solid var(--line-bright);
  background: var(--bg-term);
  margin-top: 1rem;
}
.snippet header {
  padding: 0.45rem 1rem;
  font-size: 0.75rem;
  color: var(--ink-dim);
  border-bottom: 1px solid var(--line);
}
.snippet pre {
  padding: 0.9rem 1.1rem;
  overflow-x: auto;
  font-size: 0.83rem;
  line-height: 1.7;
}
.snippet .c { color: var(--ink-dim); }
.snippet .p { color: var(--orange); }

.note {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--ink-dim);
  border-left: 2px solid var(--orange);
  padding: 0.35rem 0 0.35rem 1rem;
}
.note code { color: var(--steel); }

/* repo links */

.repos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}
.repo {
  display: block;
  border: 1px solid var(--line);
  background: var(--bg-raise);
  padding: 1.1rem 1.3rem;
  color: var(--ink);
}
.repo:hover {
  text-decoration: none;
  border-color: var(--orange);
  color: var(--ink);
}
.repo em {
  display: block;
  font-style: normal;
  color: var(--steel);
  font-weight: 600;
  margin-bottom: 0.3rem;
}
.repo:hover em { color: var(--orange); }
.repo span { font-size: 0.85rem; color: var(--ink-dim); }

/* ── footer ─────────────────────────────────────────────── */

footer {
  border-top: 1px solid var(--line);
  margin-top: 2rem;
  padding: 2rem 1.5rem 3rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--ink-dim);
}
footer p { max-width: 72ch; margin: 0.35rem auto; }

/* ── licenses page ──────────────────────────────────────── */

.prose { max-width: 760px; }
.prose h2 { margin-top: 2rem; }
.prose p { margin: 0.9rem 0; color: var(--ink); font-size: 0.92rem; }
.prose p.dim { color: var(--ink-dim); }
.prose blockquote {
  border-left: 2px solid var(--line-bright);
  padding: 0.5rem 0 0.5rem 1.1rem;
  margin: 1rem 0;
  color: var(--ink-dim);
  font-size: 0.88rem;
}

/* series video */

.watch-sub {
  color: var(--ink-dim);
  max-width: 62ch;
  margin: 0 auto 2rem;
}
.watch-sub strong { color: var(--steel); font-weight: 600; }
.series-video {
  display: block;
  width: 100%;
  max-width: 960px;
  margin: 0 auto 2rem;
  border: 1px solid var(--line-bright);
  background: #000;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}
.watch-part {
  max-width: 960px;
  margin: 2.2rem auto 0.9rem;
  text-align: left;
  color: var(--steel);
  font-size: 1.05rem;
  font-weight: 600;
}
.watch-part .n {
  display: inline-block;
  min-width: 1.6em;
  margin-right: 0.6em;
  color: var(--orange);
  font-family: var(--mono);
}