/* ── Palette — dark grey, amber/teal accents ──────────────────────────────── */
:root {
  --bg:        #1a1a1a;
  --bg-alt:    #222222;
  --bg-card:   #252525;
  --bg-sidebar:#1d1d1d;
  --bg-code:   #202020;
  --border:    #303030;
  --border-hi: #404040;
  --text:      #9a9a9a;
  --text-hi:   #c4c4c4;
  --text-em:   #eeeeee;
  --amber:     #e8a045;
  --amber-hi:  #f5bc6a;
  --amber-dim: rgba(232, 160, 69, 0.15);
  --teal:      #2dd4bf;
  --teal-hi:   #5ee8d4;
  --teal-dim:  rgba(45, 212, 191, 0.12);
  --rust:      #e07040;
  --red:       #e05555;
  --mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  --sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
}

/* ── Shared nav (landing + docs) ─────────────────────────────────────────── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(26, 26, 26, 0.93);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 54px;
}

.nav-logo {
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.04em;
  text-decoration: none;
}
.nav-logo .accent { color: var(--text-hi); }

.nav-links { list-style: none; display: flex; gap: 1.8rem; }
.nav-links a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--amber-hi); }

.nav-gh {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-hi);
  text-decoration: none;
  font-size: 0.85rem;
  border: 1px solid var(--border-hi);
  padding: 0.3rem 0.75rem;
  border-radius: 6px;
  transition: border-color 0.15s, color 0.15s;
}
.nav-gh:hover { border-color: var(--amber); color: var(--amber-hi); }

/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero {
  padding: 7rem 2rem 5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 50% -5%, rgba(232,160,69,0.09) 0%, transparent 70%),
    radial-gradient(ellipse 50% 35% at 80% 65%, rgba(45,212,191,0.05) 0%, transparent 60%);
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
  border: 1px solid rgba(232,160,69,0.35);
  padding: 0.22rem 0.8rem;
  border-radius: 999px;
  margin-bottom: 1.4rem;
  background: var(--amber-dim);
}

.hero h1 {
  font-family: var(--mono);
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-em);
  line-height: 1.1;
  margin-bottom: 0.3rem;
}
.hero h1 .l    { color: var(--amber-hi); }
.hero h1 .rest { color: var(--text-hi);  }

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-hi);
  max-width: 540px;
  margin: 1rem auto 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Mini benchmark table ────────────────────────────────────────────────── */
.mini-bench-wrap {
  max-width: 500px;
  margin: 2rem auto 0;
  overflow-x: auto;
}
.mini-bench-wrap th,
.mini-bench-wrap td {
  text-align: center !important;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.62rem 1.4rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s;
  letter-spacing: 0.02em;
}
.btn-primary { background: var(--amber); color: #1a1a1a; }
.btn-primary:hover { background: var(--amber-hi); transform: translateY(-1px); }
.btn-secondary {
  background: transparent;
  color: var(--teal);
  border: 1px solid rgba(45,212,191,0.45);
}
.btn-secondary:hover {
  border-color: var(--teal-hi);
  background: var(--teal-dim);
  transform: translateY(-1px);
}

/* ── Sections ────────────────────────────────────────────────────────────── */
section {
  max-width: 1000px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.section-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.6rem;
}

section h2 {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--text-em);
  margin-bottom: 1rem;
}

section p { max-width: 680px; margin-bottom: 1.2rem; }

/* ── Cards ───────────────────────────────────────────────────────────────── */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.2rem;
  margin-top: 2rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.4rem;
  transition: border-color 0.2s;
}
.card:hover { border-color: var(--amber); }
.card-icon { font-size: 1.6rem; margin-bottom: 0.8rem; }
.card h3 { font-size: 1rem; font-weight: 600; color: var(--text-em); margin-bottom: 0.4rem; }
.card p   { font-size: 0.875rem; margin: 0; }
.card code {
  font-family: var(--mono);
  font-size: 0.8em;
  background: var(--bg-code);
  padding: 0.1em 0.3em;
  border-radius: 3px;
  color: var(--teal);
}

/* ── ASCII diagram ───────────────────────────────────────────────────────── */
.diagram-section {
  padding: 0 2rem 4rem;
  display: flex;
  justify-content: center;
}
.diagram-wrap {
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.8rem 2.2rem;
  overflow-x: auto;
  max-width: 820px;
  width: 100%;
}
.c-dim  { color: var(--border-hi); }
.c-em   { color: var(--text-em); }
.c-amb  { color: var(--amber); }
.c-teal { color: var(--teal); }
.c-rust { color: var(--rust); }

/* ── Bench table ─────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; margin-top: 1.5rem; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
th {
  text-align: left;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border-hi);
  color: var(--text-hi);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
tr:last-child td { border-bottom: none; }
td.faster { color: var(--teal); font-weight: 600; }
td.slower { color: var(--text-hi); }
td.baseline { color: var(--amber); }
td code, th code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: var(--bg-code);
  padding: 0.1em 0.35em;
  border-radius: 3px;
  color: var(--teal);
}

/* ── Code blocks ─────────────────────────────────────────────────────────── */
.code-block {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin: 1rem 0;
}
.code-block-header {
  padding: 0.4rem 1rem;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text);
  letter-spacing: 0.06em;
}
.code-block pre {
  padding: 1rem 1.2rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-hi);
}
.kw  { color: var(--amber); }
.st  { color: var(--teal); }
.cm  { color: #555; font-style: italic; }
.num { color: var(--rust); }

/* ── Steps ───────────────────────────────────────────────────────────────── */
.steps { display: flex; flex-direction: column; gap: 1.5rem; margin-top: 2rem; }
.step  { display: flex; gap: 1.2rem; }
.step-num {
  flex-shrink: 0;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--amber-dim);
  border: 1px solid rgba(232,160,69,0.4);
  color: var(--amber);
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.15rem;
}
.step-body h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-em);
  margin-bottom: 0.3rem;
}
.step-body p { font-size: 0.875rem; margin: 0 0 0.5rem; }

/* ── Badges ──────────────────────────────────────────────────────────────── */
.badges { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-top: 1.5rem; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.22rem 0.7rem;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid;
}
.badge-amber { color: var(--amber); border-color: rgba(232,160,69,0.35); background: var(--amber-dim); }
.badge-teal  { color: var(--teal);  border-color: rgba(45,212,191,0.3);  background: var(--teal-dim); }
.badge-gray  { color: var(--text-hi); border-color: var(--border); background: var(--bg-alt); }

/* ── Divider ─────────────────────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  max-width: 960px;
  margin: 0 auto;
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
footer {
  text-align: center;
  padding: 2.5rem 2rem;
  font-size: 0.78rem;
  color: #4a4a4a;
  font-family: var(--mono);
  border-top: 1px solid var(--border);
}
footer a { color: var(--amber); text-decoration: none; }
footer a:hover { color: var(--amber-hi); }

/* ══════════════════════════════════════════════════════════════════════════
   DOC LAYOUT  (sidebar + content)
══════════════════════════════════════════════════════════════════════════ */
.doc-shell {
  display: flex;
  min-height: calc(100vh - 54px);
}

/* ── Sidebar ─────────────────────────────────────────────────────────────── */
.doc-sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  padding: 2rem 0;
  position: sticky;
  top: 54px;
  height: calc(100vh - 54px);
  overflow-y: auto;
}

.sidebar-group { margin-bottom: 2rem; }
.sidebar-group-title {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--amber);
  padding: 0 1.5rem;
  margin-bottom: 0.5rem;
}

.sidebar-nav { list-style: none; }
.sidebar-nav li a {
  display: block;
  padding: 0.35rem 1.5rem;
  font-size: 0.875rem;
  color: var(--text);
  text-decoration: none;
  transition: color 0.12s, background 0.12s;
  border-left: 2px solid transparent;
}
.sidebar-nav li a:hover {
  color: var(--text-em);
  background: rgba(255,255,255,0.03);
}
.sidebar-nav li a.active {
  color: var(--amber-hi);
  border-left-color: var(--amber);
  background: var(--amber-dim);
}

/* ── Doc content ─────────────────────────────────────────────────────────── */
.doc-content {
  flex: 1;
  padding: 3rem 3.5rem;
  max-width: 860px;
  min-width: 0;
}

.doc-content h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-em);
  margin-bottom: 0.4rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--border);
}
.doc-content .doc-subtitle {
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 2rem;
}

.doc-content h2 {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-em);
  margin: 2.2rem 0 0.8rem;
  padding-top: 0.5rem;
}
.doc-content h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-hi);
  margin: 1.6rem 0 0.5rem;
}

.doc-content p { margin-bottom: 1rem; line-height: 1.75; }

.doc-content a { color: var(--amber); text-decoration: none; }
.doc-content a:hover { color: var(--amber-hi); text-decoration: underline; }

.doc-content ul, .doc-content ol {
  padding-left: 1.4rem;
  margin-bottom: 1rem;
}
.doc-content li { margin-bottom: 0.3rem; }

.doc-content code {
  font-family: var(--mono);
  font-size: 0.83em;
  background: var(--bg-code);
  border: 1px solid var(--border);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  color: var(--teal);
}

.doc-content pre {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.2rem 1.4rem;
  overflow-x: auto;
  margin: 1rem 0 1.4rem;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--text-hi);
}
.doc-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
  color: inherit;
}

.doc-content blockquote {
  border-left: 3px solid var(--amber);
  background: var(--amber-dim);
  padding: 0.8rem 1.2rem;
  border-radius: 0 6px 6px 0;
  margin: 1.2rem 0;
  color: var(--text-hi);
}

.doc-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin: 1.2rem 0;
}
.doc-content th {
  background: var(--bg-alt);
  color: var(--text-hi);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.doc-content td, .doc-content th { padding: 0.55rem 0.9rem; }

/* ── Admonitions ─────────────────────────────────────────────────────────── */
.admonition {
  border-radius: 6px;
  padding: 0.9rem 1.2rem;
  margin: 1.2rem 0;
  border-left: 3px solid;
}
.admonition.note {
  background: rgba(45,212,191,0.07);
  border-color: var(--teal);
}
.admonition.warning {
  background: rgba(232,160,69,0.08);
  border-color: var(--amber);
}
.admonition-title {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}
.admonition.note .admonition-title { color: var(--teal); }
.admonition.warning .admonition-title { color: var(--amber); }

/* ── Doc nav footer ──────────────────────────────────────────────────────── */
.doc-nav-footer {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.875rem;
}
.doc-nav-footer a {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--amber);
  text-decoration: none;
  font-weight: 500;
}
.doc-nav-footer a:hover { color: var(--amber-hi); }

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero { padding: 4rem 1.5rem 3rem; }
  .doc-sidebar { display: none; }
  .doc-content { padding: 2rem 1.5rem; }
}