/* =============================================
   SOLANODES DOCUMENTATION — STYLES
   Dark theme, sidebar layout, FASHN-inspired
   ============================================= */

:root {
  /* Colors */
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #161616;
  --bg-card: #141414;
  --bg-card-hover: #1a1a1a;
  --bg-code: #1a1a1a;
  --text-primary: #f0ece4;
  --text-secondary: rgba(240, 236, 228, 0.7);
  --text-muted: rgba(240, 236, 228, 0.4);
  --text-faint: rgba(240, 236, 228, 0.25);
  --accent: #c41e3a;
  --accent-dim: rgba(196, 30, 58, 0.25);
  --accent-glow: rgba(196, 30, 58, 0.12);
  --accent-soft: rgba(196, 30, 58, 0.08);
  --border: rgba(240, 236, 228, 0.08);
  --border-strong: rgba(240, 236, 228, 0.14);
  --success: #22c55e;
  --warning: #f59e0b;
  --info: #3b82f6;

  /* Typography */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-logo: 'Unbounded', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Layout */
  --sidebar-width: 260px;
  --toc-width: 200px;
  --nav-height: 60px;
  --content-max: 780px;
}

/* =============================================
   RESET & BASE
   ============================================= */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Film grain texture overlay (matches main site) */
body::after {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.18;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 256px 256px;
}

::selection {
  background: var(--accent);
  color: var(--bg-primary);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: #e63950;
}

/* =============================================
   TOP NAVIGATION
   ============================================= */

.docs-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.docs-nav-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.docs-nav-logo {
  font-family: var(--font-logo);
  font-size: 0.95rem;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: 0.08em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.docs-nav-logo:hover {
  color: var(--text-primary);
}

.docs-logo-icon {
  border-radius: 50%;
  display: block;
}

.docs-nav-divider {
  color: var(--text-muted);
  font-size: 1.2rem;
  font-weight: 300;
}

.docs-nav-section {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-secondary);
}

.docs-nav-right {
  display: flex;
  align-items: center;
  gap: 24px;
}

.docs-nav-link {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  transition: color 0.2s;
}

.docs-nav-link:hover {
  color: var(--text-primary);
}

.docs-nav-cta {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--bg-primary);
  background: var(--accent);
  padding: 8px 20px;
  border-radius: 40px;
  text-decoration: none;
  transition: all 0.2s;
}

.docs-nav-cta:hover {
  background: #e63950;
  color: var(--bg-primary);
  box-shadow: 0 0 20px var(--accent-glow);
}

/* Mobile toggle */
.docs-mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  cursor: pointer;
  padding: 8px;
  width: 36px;
  height: 36px;
  flex-direction: column;
  gap: 4px;
  transition: border-color 0.2s;
}

.docs-mobile-toggle:hover {
  border-color: var(--text-muted);
}

.docs-mobile-toggle span {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--text-secondary);
  transition: all 0.3s;
  border-radius: 1px;
}

.docs-mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}

.docs-mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.docs-mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
}

/* =============================================
   LAYOUT — Three column
   ============================================= */

.docs-layout {
  display: flex;
  margin-top: var(--nav-height);
  min-height: calc(100vh - var(--nav-height));
}

/* =============================================
   LEFT SIDEBAR
   ============================================= */

.docs-sidebar {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  width: var(--sidebar-width);
  height: calc(100vh - var(--nav-height));
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: var(--bg-secondary);
  z-index: 50;
}

.docs-sidebar::-webkit-scrollbar {
  width: 4px;
}

.docs-sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.docs-sidebar::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 2px;
}

.docs-sidebar-inner {
  padding: 24px 0 60px;
}

.sidebar-group {
  margin-bottom: 8px;
}

.sidebar-heading {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 12px 24px 6px;
}

.sidebar-link {
  display: block;
  font-family: var(--font-body);
  font-size: 0.84rem;
  font-weight: 400;
  color: var(--text-secondary);
  padding: 7px 24px 7px 28px;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: all 0.15s;
}

.sidebar-link:hover {
  color: var(--text-primary);
  background: var(--accent-soft);
}

.sidebar-link.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-soft);
  font-weight: 500;
}

/* =============================================
   MAIN CONTENT
   ============================================= */

.docs-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  margin-right: var(--toc-width);
  min-width: 0;
}

.docs-content-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 48px 40px 80px;
}

/* =============================================
   PAGE-BASED NAVIGATION
   ============================================= */

.docs-page {
  display: none;
}

.docs-page.active {
  display: block;
  animation: pageFadeIn 0.25s ease-out;
}

@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Prev / Next page navigation */
.docs-page-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.page-nav-btn {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 20px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-card);
  text-decoration: none;
  transition: all 0.2s;
  min-width: 160px;
}

.page-nav-btn:hover {
  border-color: var(--accent-dim);
  background: var(--bg-card-hover);
  box-shadow: 0 0 20px var(--accent-glow);
}

.page-nav-next {
  text-align: right;
  margin-left: auto;
}

.page-nav-prev {
  text-align: left;
}

.page-nav-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.page-nav-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
}

/* Sections */
section {
  padding-bottom: 48px;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--border);
}

section:last-of-type {
  border-bottom: none;
}

/* Badge */
.docs-badge {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  background: var(--accent-soft);
  border: 1px solid var(--accent-dim);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
}

/* Typography */
h1 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}

h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-top: 40px;
  margin-bottom: 12px;
}

h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
  margin-top: 32px;
  margin-bottom: 10px;
}

h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 4px;
}

p {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 12px;
}

.docs-lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

strong {
  color: var(--text-primary);
  font-weight: 600;
}

code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-code);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

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

/* =============================================
   HIGHLIGHT BOX (stats row)
   ============================================= */

.docs-highlight-box {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 32px;
  margin: 24px 0 32px;
}

.highlight-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.highlight-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: center;
}

.highlight-value {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.highlight-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* =============================================
   CALLOUT BOXES
   ============================================= */

.docs-callout {
  display: flex;
  gap: 14px;
  padding: 18px 20px;
  margin: 20px 0;
  border-radius: 8px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
}

.docs-callout-info {
  border-left-color: var(--info);
  background: rgba(59, 130, 246, 0.06);
}

.docs-callout-warn {
  border-left-color: var(--warning);
  background: rgba(245, 158, 11, 0.06);
}

.callout-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  line-height: 1.5;
}

.docs-callout p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.65;
}

/* =============================================
   STEPS
   ============================================= */

.docs-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 20px 0 24px;
}

.step {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.step:last-child {
  border-bottom: none;
}

.step-number {
  width: 32px;
  height: 32px;
  min-width: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-dim);
  border-radius: 8px;
  margin-top: 2px;
}

.step-content h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.step-content p {
  font-size: 0.88rem;
  margin: 0;
  color: var(--text-muted);
}

/* =============================================
   FLOW DIAGRAM
   ============================================= */

.docs-flow-diagram {
  margin: 24px 0;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow-x: auto;
}

.docs-flow-diagram code {
  display: block;
  padding: 20px 24px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--text-secondary);
  background: none;
  border: none;
  white-space: pre;
}

/* =============================================
   TIER CARDS
   ============================================= */

.tier-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 24px 0 32px;
}

.tier-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 24px;
  transition: all 0.2s;
  position: relative;
}

.tier-card:hover {
  border-color: var(--border-strong);
  background: var(--bg-card-hover);
}

.tier-featured {
  border-color: var(--accent-dim);
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(196, 30, 58, 0.04) 100%);
}

.tier-featured:hover {
  border-color: var(--accent);
}

.tier-popular {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--bg-primary);
  background: var(--accent);
  padding: 3px 12px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.tier-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.tier-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--bg-tertiary);
  color: var(--text-muted);
}

.tier-seed { color: #22c55e; border-color: rgba(34, 197, 94, 0.3); }
.tier-growth { color: #3b82f6; border-color: rgba(59, 130, 246, 0.3); }
.tier-apex { color: var(--accent); border-color: var(--accent-dim); }

.tier-header h3 {
  font-size: 1.2rem;
  margin: 0;
}

.tier-price {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.tier-cost {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.tier-cost small,
.tier-sol small {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
}

.tier-plus {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.tier-sol {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.tier-reward {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.tier-rate {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.tier-unit {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.tier-details {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tier-details li {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding-left: 18px;
  position: relative;
}

.tier-details li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 7px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-dim);
}

/* =============================================
   TABLES
   ============================================= */

.docs-table-wrapper {
  margin: 20px 0;
  overflow-x: auto;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.docs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.docs-table thead {
  background: var(--bg-tertiary);
}

.docs-table th {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.docs-table td {
  padding: 12px 16px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

.docs-table tbody tr:last-child td {
  border-bottom: none;
}

.docs-table tbody tr:hover {
  background: var(--accent-soft);
}

.docs-table code {
  font-size: 0.82rem;
  padding: 2px 6px;
}

.table-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 6px;
}

/* =============================================
   INLINE TABLE (key-value pairs)
   ============================================= */

.docs-inline-table {
  margin: 16px 0 24px;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.inline-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
}

.inline-row:last-child {
  border-bottom: none;
}

.inline-row:hover {
  background: var(--accent-soft);
}

.inline-label {
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.inline-value {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--text-primary);
  font-weight: 500;
  text-align: right;
}

/* =============================================
   EXAMPLE BOX
   ============================================= */

.docs-example-box {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px 24px;
  margin: 16px 0 24px;
}

.example-scenario {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.example-calc {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.example-calc code {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-primary);
  background: none;
  border: none;
  padding: 0;
}

.example-calc strong {
  color: var(--accent);
}

/* =============================================
   SPLIT BOX (treasury 50/50)
   ============================================= */

.docs-split-box {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  margin: 20px 0 28px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.split-item {
  padding: 24px;
  background: var(--bg-card);
}

.split-item:hover {
  background: var(--bg-card-hover);
}

.split-pct {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  display: block;
  margin-bottom: 8px;
}

.split-item h4 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.split-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.6;
}

.split-divider {
  width: 1px;
  background: var(--border);
}

/* =============================================
   FLYWHEEL POINTS
   ============================================= */

.flywheel-diagram {
  margin-bottom: 24px;
}

.flywheel-points {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 16px 0;
}

.fw-point {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.fw-point:last-child {
  border-bottom: none;
}

.fw-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  min-width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  border-radius: 6px;
  flex-shrink: 0;
}

.fw-point p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
}

/* =============================================
   FAQ (details/summary)
   ============================================= */

.docs-faq {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 16px 0;
}

.faq-details {
  border-bottom: 1px solid var(--border);
}

.faq-details:first-child {
  border-top: 1px solid var(--border);
}

.faq-details summary {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.2s;
}

.faq-details summary::-webkit-details-marker {
  display: none;
}

.faq-details summary::after {
  content: '+';
  font-size: 1.2rem;
  color: var(--accent);
  transition: transform 0.3s;
  flex-shrink: 0;
}

.faq-details[open] summary::after {
  transform: rotate(45deg);
}

.faq-details summary:hover {
  color: var(--accent);
}

.faq-details p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  padding-bottom: 16px;
}

/* =============================================
   LINK CARDS
   ============================================= */

.docs-links-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 16px 0;
}

.docs-link-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  transition: all 0.2s;
}

.docs-link-card:hover {
  border-color: var(--accent-dim);
  background: var(--bg-card-hover);
  box-shadow: 0 0 20px var(--accent-glow);
}

.link-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
}

.docs-link-card h4 {
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.docs-link-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
}

/* =============================================
   RIGHT SIDEBAR — Table of Contents
   ============================================= */

.docs-toc {
  position: fixed;
  top: var(--nav-height);
  right: 0;
  width: var(--toc-width);
  height: calc(100vh - var(--nav-height));
  overflow-y: auto;
  padding: 24px 16px;
  border-left: 1px solid var(--border);
}

.docs-toc::-webkit-scrollbar {
  width: 0;
}

.toc-heading {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.toc-link {
  display: block;
  font-size: 0.78rem;
  color: var(--text-faint);
  padding: 4px 0;
  text-decoration: none;
  transition: color 0.15s;
  border-left: 2px solid transparent;
  padding-left: 10px;
}

.toc-link:hover {
  color: var(--text-secondary);
}

.toc-link.active {
  color: var(--accent);
  border-left-color: var(--accent);
}

.toc-link.toc-sub {
  padding-left: 20px;
  font-size: 0.74rem;
}

/* =============================================
   FOOTER
   ============================================= */

.docs-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 32px 0;
  margin-top: 48px;
  border-top: 1px solid var(--border);
}

.docs-footer-logo {
  font-family: var(--font-logo);
  font-size: 0.85rem;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: 0.08em;
}

.docs-footer-copy {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-left: 16px;
}

.docs-footer-right {
  display: flex;
  gap: 20px;
}

.docs-footer-right a {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.docs-footer-right a:hover {
  color: var(--accent);
}

/* =============================================
   RESPONSIVE — Tablet
   ============================================= */

@media (max-width: 1200px) {
  .docs-toc {
    display: none;
  }

  .docs-content {
    margin-right: 0;
  }
}

@media (max-width: 1024px) {
  :root {
    --sidebar-width: 240px;
  }

  .docs-nav-link {
    display: none;
  }

  .docs-mobile-toggle {
    display: flex;
  }

  .docs-nav {
    padding: 0 16px;
    height: 52px;
  }

  .docs-nav-logo {
    font-size: 0.85rem;
    gap: 6px;
  }

  .docs-nav-logo canvas {
    width: 26px !important;
    height: 26px !important;
  }

  .docs-nav-right {
    gap: 10px;
  }

  .docs-nav-cta {
    font-size: 0.72rem;
    padding: 7px 14px;
    border-radius: 6px;
  }

  .docs-nav-divider,
  .docs-nav-section {
    display: none;
  }

  .docs-sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 90;
    top: 52px;
  }

  .docs-sidebar.open {
    transform: translateX(0);
  }

  .docs-content {
    margin-left: 0;
  }

  .docs-content-inner {
    padding: 32px 24px 60px;
  }

  .tier-cards {
    grid-template-columns: 1fr;
  }

  .docs-split-box {
    grid-template-columns: 1fr;
  }

  .split-divider {
    width: 100%;
    height: 1px;
  }

  .highlight-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* =============================================
   RESPONSIVE — Mobile
   ============================================= */

@media (max-width: 640px) {
  h1 {
    font-size: 1.6rem;
  }

  h2 {
    font-size: 1.3rem;
  }

  .docs-lead {
    font-size: 1rem;
  }

  .docs-content-inner {
    padding: 24px 16px 48px;
  }

  .docs-highlight-box {
    padding: 20px 16px;
  }

  .highlight-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .highlight-value {
    font-size: 1.4rem;
  }

  .docs-links-grid {
    grid-template-columns: 1fr;
  }

  .docs-table {
    font-size: 0.8rem;
  }

  .docs-table th,
  .docs-table td {
    padding: 10px 12px;
  }

  .tier-card {
    padding: 20px 16px;
  }

  .tier-rate {
    font-size: 1.3rem;
  }

  .docs-flow-diagram code {
    font-size: 0.72rem;
    padding: 14px 16px;
  }

  .docs-footer {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .docs-footer-copy {
    margin-left: 0;
    display: block;
    margin-top: 4px;
  }

  .inline-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .inline-value {
    text-align: left;
  }
}

@media (max-width: 480px) {
  .docs-nav {
    padding: 0 12px;
    height: 48px;
  }

  .docs-nav-logo {
    font-size: 0.8rem;
  }

  .docs-nav-cta {
    padding: 6px 12px;
    font-size: 0.68rem;
  }

  .docs-mobile-toggle {
    width: 32px;
    height: 32px;
    padding: 6px;
  }

  .docs-sidebar {
    top: 48px;
  }

  .docs-content-inner {
    padding: 20px 14px 40px;
  }

  h1 {
    font-size: 1.4rem;
  }

  .highlight-row {
    grid-template-columns: 1fr 1fr;
  }

  .highlight-value {
    font-size: 1.2rem;
  }

  section {
    padding-bottom: 32px;
    margin-bottom: 32px;
  }
}