/* ── envref docs — shared stylesheet ────────── */

:root {
  --bg: #0a0e14;
  --bg-surface: #111820;
  --bg-elevated: #1a2230;
  --bg-terminal: #0d1117;
  --border: #1e2a3a;
  --border-bright: #2d3f54;
  --text: #c5cdd8;
  --text-muted: #6b7d93;
  --text-bright: #e6edf5;
  --green: #7ee787;
  --green-dim: #3fb950;
  --blue: #79c0ff;
  --cyan: #76e4f7;
  --purple: #d2a8ff;
  --yellow: #ffa657;
  --red: #ff7b72;
  --pink: #ff9bce;
  --mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: rgba(126, 231, 135, 0.2);
  color: var(--green);
}

a {
  color: var(--blue);
  text-decoration: none;
  transition: color 0.15s;
}
a:hover { color: var(--cyan); }

/* ── Nav ────────────────────────────────────── */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 14, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

nav .nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--green);
  letter-spacing: -0.02em;
}
.nav-logo span { color: var(--text-muted); }

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  font-family: var(--mono);
  font-size: 0.85rem;
}
.nav-links a { color: var(--text-muted); transition: color 0.15s; }
.nav-links a:hover { color: var(--text-bright); }

.nav-github {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all 0.15s;
}
.nav-github:hover {
  color: var(--text-bright);
  border-color: var(--border-bright);
  background: var(--bg-elevated);
}

/* ── Doc layout ─────────────────────────────── */

.doc-layout {
  display: flex;
  max-width: 1100px;
  margin: 0 auto;
  padding: 5rem 1.5rem 0;
  gap: 3rem;
}

/* ── Sidebar ────────────────────────────────── */

.doc-sidebar {
  width: 220px;
  flex-shrink: 0;
  position: sticky;
  top: 5rem;
  align-self: flex-start;
  padding-top: 1.5rem;
  max-height: calc(100vh - 5rem);
  overflow-y: auto;
}

.doc-sidebar h4 {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.doc-sidebar ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.doc-sidebar li a {
  display: block;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 0.35rem 0.75rem;
  border-radius: 4px;
  border-left: 2px solid transparent;
  transition: all 0.15s;
}

.doc-sidebar li a:hover {
  color: var(--text-bright);
  background: var(--bg-surface);
}

.doc-sidebar li.active a {
  color: var(--green);
  border-left-color: var(--green);
  background: rgba(126, 231, 135, 0.05);
}

.doc-sidebar .back-link {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  transition: color 0.15s;
}
.doc-sidebar .back-link:hover { color: var(--text-bright); }

/* ── Main content ───────────────────────────── */

.doc-content {
  flex: 1;
  min-width: 0;
  padding: 1.5rem 0 4rem;
}

/* Headings */
.doc-content h1 {
  font-family: var(--mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.doc-content .doc-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.6;
  max-width: 640px;
}

.doc-content h2 {
  font-family: var(--mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-bright);
  margin-top: 3rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
  letter-spacing: -0.01em;
}

.doc-content h3 {
  font-family: var(--mono);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-bright);
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}

.doc-content h4 {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  margin-top: 1.5rem;
  margin-bottom: 0.4rem;
}

/* Paragraphs */
.doc-content p {
  margin-bottom: 1rem;
  line-height: 1.7;
}

/* Inline code */
.doc-content code {
  font-family: var(--mono);
  font-size: 0.85em;
  color: var(--cyan);
  background: var(--bg-elevated);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
}

/* Code blocks */
.doc-content pre {
  background: var(--bg-terminal);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
  overflow-x: auto;
  line-height: 1.6;
  font-size: 0.82rem;
}

.doc-content pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  color: var(--text);
  font-size: inherit;
}

.doc-content .code-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: 6px 6px 0 0;
  padding: 0.4rem 1rem;
  margin-top: 0.5rem;
}

.doc-content .code-label + pre {
  border-radius: 0 0 6px 6px;
  margin-top: 0;
}

/* Syntax highlighting in code blocks */
.doc-content pre .comment { color: var(--text-muted); font-style: italic; }
.doc-content pre .prompt { color: var(--green); }
.doc-content pre .cmd { color: var(--text-bright); }
.doc-content pre .flag { color: var(--blue); }
.doc-content pre .arg { color: var(--yellow); }
.doc-content pre .output { color: var(--text-muted); }
.doc-content pre .str { color: var(--green); }
.doc-content pre .key { color: var(--purple); }

/* Lists */
.doc-content ul,
.doc-content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.doc-content li {
  margin-bottom: 0.35rem;
  line-height: 1.6;
}

.doc-content li > ul,
.doc-content li > ol {
  margin-top: 0.35rem;
  margin-bottom: 0.35rem;
}

/* Tables */
.doc-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 1.25rem;
}

.doc-content th {
  background: var(--bg-elevated);
  color: var(--text-muted);
  font-family: var(--mono);
  font-weight: 500;
  text-align: left;
  padding: 0.65rem 1rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}

.doc-content td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.doc-content tr:last-child td {
  border-bottom: none;
}

.doc-content td code {
  font-size: 0.8rem;
}

/* Horizontal rules */
.doc-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

/* Strong, em */
.doc-content strong {
  color: var(--text-bright);
  font-weight: 600;
}

.doc-content em {
  font-style: italic;
  color: var(--text);
}

/* Blockquote (for notes) */
.doc-content blockquote {
  border-left: 3px solid var(--green-dim);
  background: rgba(126, 231, 135, 0.03);
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  border-radius: 0 4px 4px 0;
}

.doc-content blockquote p:last-child {
  margin-bottom: 0;
}

/* Type badge */
.type-badge {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--purple);
  background: rgba(210, 168, 255, 0.1);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  display: inline-block;
}

/* See also links */
.doc-content .see-also {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.doc-content .see-also h2 {
  border-bottom: none;
  margin-top: 0;
  padding-bottom: 0;
}

.doc-content .see-also ul {
  list-style: none;
  padding-left: 0;
}

.doc-content .see-also li {
  margin-bottom: 0.5rem;
}

.doc-content .see-also li a {
  color: var(--green);
  font-family: var(--mono);
  font-size: 0.9rem;
}

.doc-content .see-also li span {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ── Footer ─────────────────────────────────── */

footer {
  padding: 3rem 0;
  text-align: center;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}
footer a { color: var(--text-muted); }
footer a:hover { color: var(--text-bright); }
.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

/* ── Responsive ─────────────────────────────── */

@media (max-width: 900px) {
  .doc-layout {
    flex-direction: column;
    gap: 0;
  }

  .doc-sidebar {
    position: static;
    width: 100%;
    max-height: none;
    padding-top: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
  }

  .doc-sidebar ul {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.25rem;
  }

  .doc-sidebar li a {
    border-left: none;
    border-bottom: 2px solid transparent;
    padding: 0.3rem 0.6rem;
    font-size: 0.75rem;
  }

  .doc-sidebar li.active a {
    border-left-color: transparent;
    border-bottom-color: var(--green);
  }
}

@media (max-width: 768px) {
  .nav-links { display: none; }

  .doc-content h1 { font-size: 1.5rem; }
  .doc-content h2 { font-size: 1.15rem; }

  .doc-content pre {
    font-size: 0.75rem;
    padding: 0.75rem 1rem;
  }

  .doc-content table {
    font-size: 0.75rem;
  }
  .doc-content th,
  .doc-content td {
    padding: 0.4rem 0.6rem;
  }
}

@media (max-width: 480px) {
  .doc-content h1 { font-size: 1.3rem; }
}