/* ============================================================
   LYNKR — Documentation
   Inherits design tokens from the Precision Instrument system
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,400;12..96,600;12..96,700;12..96,800&family=IBM+Plex+Sans:ital,wght@0,400;0,500;0,600;1,400&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  --bg:            oklch(0.08 0.008 250);
  --bg-surface:    oklch(0.12 0.008 250);
  --bg-raised:     oklch(0.16 0.009 250);
  --text:          oklch(0.96 0.003 250);
  --text-sec:      oklch(0.64 0.007 250);
  --text-muted:    oklch(0.46 0.005 250);
  --accent:        oklch(0.78 0.17 78);
  --accent-dim:    oklch(0.78 0.17 78 / 0.12);
  --border:        oklch(0.22 0.008 250);
  --border-sub:    oklch(0.16 0.006 250);

  --font-display: 'Bricolage Grotesque', system-ui, sans-serif;
  --font-body:    'IBM Plex Sans', system-ui, sans-serif;
  --font-mono:    'IBM Plex Mono', 'Fira Code', monospace;
  --r: 4px;
  --r-lg: 8px;
}

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  background-image: radial-gradient(oklch(0.28 0.01 250 / 0.4) 1px, transparent 1px);
  background-size: 28px 28px;
  background-attachment: fixed;
}

a { color: inherit; text-decoration: none; }

/* === NAV ================================================== */
.doc-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 clamp(1rem, 3vw, 2rem);
  height: 60px;
  background: oklch(0.08 0.008 250 / 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-sub);
}

.doc-nav-left { display: flex; align-items: center; gap: 1.5rem; }

.doc-nav-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.1em;
  color: var(--text);
}
.doc-nav-logo .dot { color: var(--accent); }

.doc-nav-back {
  display: flex; align-items: center; gap: 0.4rem;
  font-size: 0.82rem; color: var(--text-muted);
  transition: color 150ms;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--border-sub);
  border-radius: var(--r);
}
.doc-nav-back:hover { color: var(--text); border-color: var(--border); }

.doc-nav-links { display: flex; gap: 0.15rem; }
.doc-nav-links a {
  font-size: 0.82rem; color: var(--text-muted);
  padding: 0.3rem 0.6rem;
  border-radius: var(--r);
  transition: color 150ms, background 150ms;
}
.doc-nav-links a:hover { color: var(--text); background: var(--bg-surface); }

/* === LAYOUT =============================================== */
.doc-layout {
  display: flex;
  padding-top: 60px;
  min-height: 100vh;
}

/* === SIDEBAR ============================================== */
.doc-sidebar {
  width: 260px;
  padding: 2rem 1.25rem;
  border-right: 1px solid var(--border-sub);
  position: fixed;
  top: 60px; bottom: 0;
  overflow-y: auto;
  background: var(--bg);
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.doc-sidebar-section { margin-bottom: 2rem; }

.doc-sidebar-title {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  padding: 0 0.5rem;
}

.doc-sidebar-links { list-style: none; }
.doc-sidebar-links a {
  display: block;
  padding: 0.4rem 0.65rem;
  color: var(--text-sec);
  font-size: 0.84rem;
  border-radius: var(--r);
  transition: color 150ms, background 150ms;
  margin-bottom: 1px;
}
.doc-sidebar-links a:hover { color: var(--text); background: var(--bg-surface); }
.doc-sidebar-links a.active {
  color: var(--accent);
  background: var(--accent-dim);
  font-weight: 500;
}

/* === CONTENT ============================================== */
.doc-content {
  flex: 1;
  margin-left: 260px;
  padding: clamp(2rem, 5vw, 3.5rem) clamp(1.5rem, 5vw, 4rem);
  max-width: 860px;
}

/* Typography */
.doc-content h1 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
  color: var(--text);
  line-height: 1.15;
  text-wrap: balance;
}

.doc-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-weight: 700;
  margin-top: 3rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-sub);
  color: var(--text);
  line-height: 1.25;
}

.doc-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.doc-content h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.doc-content p {
  margin-bottom: 1rem;
  color: var(--text-sec);
  max-width: 72ch;
}

.doc-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: oklch(0.78 0.17 78 / 0.4);
  transition: text-decoration-color 150ms;
}
.doc-content a:hover { text-decoration-color: var(--accent); }

.doc-content strong { color: var(--text); font-weight: 600; }
.doc-content em { color: var(--text-sec); font-style: italic; }

/* Lists */
.doc-content ul,
.doc-content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
  color: var(--text-sec);
}
.doc-content li { margin-bottom: 0.4rem; }
.doc-content li::marker { color: var(--accent); }
.doc-content li p { margin-bottom: 0.25rem; }

/* Code */
.doc-content code {
  font-family: var(--font-mono);
  font-size: 0.83em;
  background: var(--bg-surface);
  border: 1px solid var(--border-sub);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  color: oklch(0.72 0.11 200);
}

.doc-content pre {
  background: var(--bg-surface);
  border: 1px solid var(--border-sub);
  border-radius: var(--r-lg);
  padding: 1.25rem 1.4rem;
  overflow-x: auto;
  margin: 1.25rem 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.doc-content pre code {
  font-size: 0.82rem;
  line-height: 1.75;
  background: none;
  border: none;
  padding: 0;
  color: var(--text-sec);
  display: block;
  white-space: pre;
}

/* Tables */
.doc-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.88rem;
}
.doc-content th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  background: var(--bg-surface);
}
.doc-content td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border-sub);
  color: var(--text-sec);
  vertical-align: top;
}
.doc-content tr:last-child td { border-bottom: none; }
.doc-content tr:hover td { background: var(--bg-surface); }

/* Blockquote */
.doc-content blockquote {
  border-left: 2px solid var(--accent);
  padding: 0.75rem 1.25rem;
  margin: 1.25rem 0;
  background: var(--accent-dim);
  border-radius: 0 var(--r) var(--r) 0;
}
.doc-content blockquote p {
  color: var(--text-sec);
  margin-bottom: 0;
  font-size: 0.95rem;
}

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

/* === LOADING STATE ======================================= */
.doc-loading {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 2rem 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
}
.doc-loading::before {
  content: '';
  width: 14px; height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* === RESPONSIVE =========================================== */
@media (max-width: 768px) {
  .doc-sidebar { display: none; }
  .doc-content { margin-left: 0; padding: 1.5rem; }
  .doc-nav-back { display: none; }
}