/* ==========================================================================
   AVERDANE — Merchant Documentation & Support Portal
   Editorial Design Grammar: Raw Silk (#f8f6f2), Sand Plaster (#eee5d9),
   Charcoal Ink (#1c1714), Rust Hearth (#8e3b27), 0px sharp hairline ledger.
   WCAG 2.2 AA Contrast Verified (>= 4.5:1 text, >= 3:1 UI borders/controls).
   ========================================================================== */

:root {
  --bg: #f8f6f2;
  --surface: #ffffff;
  --container: #eee5d9;
  --container-strong: #e4d8c8;
  --text: #1c1714;
  --muted: #574d45;
  --border: #85796f;
  --divider: #d8cfc3;
  --accent: #8e3b27;
  --accent-hover: #6f2c1c;
  --accent-soft: #f5e6df;
  --ink-bg: #221813;
  --ink-surface: #2c211b;
  --ink-text: #efe5d8;
  --ink-muted: #cbbba8;
  --ink-border: #6e5e50;
  --ink-accent: #e0a487;
  --ok-bg: #edf3ee;
  --ok-border: #2f5d3a;
  --ok-text: #1c3d24;
  --err-bg: #faece9;
  --err-border: #9e2a1c;
  --err-text: #6e190f;

  --font-display: 'Syne', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Host Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --header-h: 64px;
  --max-w: 1360px;
}

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

html {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.68;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 28px);
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
}

/* Focus-visible accessibility */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Skip link */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 1000;
  padding: 10px 18px;
  background: var(--text);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  text-decoration: none;
  transform: translateY(-150%);
  transition: transform 0.15s ease;
}

.skip-link:focus {
  transform: translateY(0);
  outline: 2px solid var(--accent);
}

/* Top Architectural Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  min-height: var(--header-h);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-group {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-shrink: 0;
}

.brand-link {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  padding: 8px 0;
}

.brand-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  border-left: 1px solid var(--divider);
  padding-left: 12px;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.top-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 11px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.top-nav a:hover {
  color: var(--text);
}

.top-nav a[aria-current="page"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.top-nav a.nav-support {
  margin-left: 6px;
  padding: 0 14px;
  min-height: 36px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}

.top-nav a.nav-support[aria-current="page"],
.top-nav a.nav-support:hover {
  background: var(--text);
  border-color: var(--text);
  color: var(--bg);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.search-trigger {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 0.8125rem;
  white-space: nowrap;
  flex-shrink: 0;
  cursor: pointer;
}

.search-trigger:hover {
  border-color: var(--text);
  color: var(--text);
}

.search-trigger kbd {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  padding: 1px 5px;
  background: var(--container);
  border: 1px solid var(--border);
  color: var(--text);
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
}

/* Mobile Navigation Drawer */
.mobile-nav {
  display: none;
  border-bottom: 1px solid var(--border);
  background: var(--container);
  padding: 16px 24px 20px;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.mobile-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  padding: 8px 12px;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  border: 1px solid transparent;
}

.mobile-nav a[aria-current="page"] {
  background: var(--surface);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

/* Duplicate Theme Warning Banner */
.duplicate-notice {
  background: var(--container);
  border-bottom: 1px solid var(--border);
}

.duplicate-notice__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  font-size: 0.84375rem;
}

.duplicate-notice__tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

/* 3-Column Documentation Shell */
.doc-shell {
  flex: 1;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 236px minmax(0, 1fr) 220px;
  gap: 44px;
  align-items: start;
}

.doc-shell--wide {
  grid-template-columns: 236px minmax(0, 1fr);
}

/* Left Chapter Rail */
.chapter-rail {
  position: sticky;
  top: calc(var(--header-h) + 28px);
  padding: 36px 0 48px;
  border-right: 1px solid var(--divider);
  padding-right: 24px;
}

.rail-heading {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.rail-list {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  border-top: 1px solid var(--divider);
}

.rail-list li {
  border-bottom: 1px solid var(--divider);
}

.rail-list a {
  display: grid;
  grid-template-columns: 28px 1fr;
  align-items: baseline;
  padding: 10px 6px;
  text-decoration: none;
  color: var(--text);
  font-size: 0.875rem;
  line-height: 1.4;
}

.rail-list a:hover {
  background: var(--container);
}

.rail-list a[aria-current="page"] {
  background: var(--container);
  color: var(--accent);
  font-weight: 600;
  border-left: 2px solid var(--accent);
  padding-left: 10px;
}

.rail-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}

.rail-list a[aria-current="page"] .rail-num {
  color: var(--accent);
}

.rail-meta-box {
  padding: 16px;
  background: var(--container);
  border: 1px solid var(--border);
  font-size: 0.8125rem;
  line-height: 1.55;
}

.rail-meta-box strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 6px;
  color: var(--text);
}

.rail-meta-box p {
  margin: 0 0 10px;
  color: var(--muted);
}

.rail-meta-box a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Main Editorial Column */
.doc-main {
  min-width: 0;
  padding: 38px 0 84px;
  max-width: 76ch;
}

.doc-eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.doc-main h1 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3vw, 2.6rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--text);
}

.doc-lead {
  margin: 0 0 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--muted);
  max-width: 66ch;
}

.doc-main h2 {
  margin: 48px 0 16px;
  padding-top: 24px;
  border-top: 1px solid var(--divider);
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.24;
  color: var(--text);
}

.doc-main h2:first-of-type {
  border-top: 0;
  padding-top: 4px;
  margin-top: 28px;
}

.doc-main h3 {
  margin: 28px 0 10px;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
}

.doc-main p {
  margin: 0 0 16px;
  max-width: 68ch;
}

.doc-main ul,
.doc-main ol {
  margin: 0 0 20px;
  padding-left: 22px;
  max-width: 68ch;
}

.doc-main li {
  margin-bottom: 8px;
}

.doc-main a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.doc-main a:hover {
  color: var(--accent-hover);
}

.doc-main code {
  font-family: var(--font-mono);
  font-size: 0.84em;
  padding: 2px 6px;
  background: var(--container);
  border: 1px solid var(--divider);
  color: var(--text);
  word-break: break-word;
}

/* UI Path Pill (matches Theme Editor exact labels) */
.ui-path {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 1px 7px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
}

/* Code / Schema Snippets */
.code-block {
  position: relative;
  margin: 18px 0 24px;
  border: 1px solid var(--border);
  background: var(--ink-bg);
  color: var(--ink-text);
}

.code-block__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: var(--ink-surface);
  border-bottom: 1px solid var(--ink-border);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-muted);
}

.copy-btn {
  min-height: 28px;
  padding: 2px 10px;
  background: transparent;
  border: 1px solid var(--ink-border);
  color: var(--ink-text);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  cursor: pointer;
}

.copy-btn:hover {
  border-color: var(--ink-accent);
  color: var(--ink-accent);
}

.code-block pre {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
}

.code-block code {
  background: none;
  border: 0;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

/* Editorial Callouts */
.callout {
  margin: 22px 0;
  padding: 16px 20px;
  background: var(--container);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
}

.callout__title {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.callout p:last-child {
  margin-bottom: 0;
}

/* Structured Ledger Tables */
.table-wrap {
  margin: 20px 0 28px;
  overflow-x: auto;
  border: 1px solid var(--border);
  background: var(--surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  line-height: 1.55;
}

th,
td {
  text-align: left;
  vertical-align: top;
  padding: 11px 14px;
  border-bottom: 1px solid var(--divider);
}

th {
  background: var(--container);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
}

tr:last-child td {
  border-bottom: 0;
}

/* Preset Swatch Cards Grid */
.preset-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 20px 0 28px;
}

.preset-card {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
}

.preset-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--divider);
}

.preset-card__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
}

.preset-card__code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}

.preset-swatches {
  display: flex;
  gap: 6px;
  margin: 10px 0;
}

.swatch-chip {
  width: 22px;
  height: 22px;
  border: 1px solid var(--border);
}

.preset-card p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}

/* Quick Jump Chapter Cards on Home */
.chapter-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 24px 0 32px;
}

.chapter-card {
  display: block;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  text-decoration: none !important;
  color: var(--text) !important;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.chapter-card:hover {
  border-color: var(--accent);
  background: var(--container);
}

.chapter-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  margin-bottom: 6px;
}

.chapter-card__title {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.chapter-card__desc {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.5;
}

/* FAQ Disclosure Accordion */
.faq-list {
  border-top: 1px solid var(--border);
  margin: 18px 0 32px;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 18px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 52px;
}

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

.faq-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--accent);
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item[open] summary {
  border-bottom: 1px dashed var(--divider);
  background: var(--container);
}

.faq-body {
  padding: 16px 18px 20px;
  font-size: 0.9375rem;
}

.faq-body p:last-child {
  margin-bottom: 0;
}

/* Next / Previous Chapter Pagination */
.chapter-pager {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.pager-link {
  display: block;
  padding: 14px 18px;
  border: 1px solid var(--border);
  background: var(--surface);
  text-decoration: none !important;
  color: var(--text) !important;
}

.pager-link:hover {
  border-color: var(--accent);
  background: var(--container);
}

.pager-link--next {
  text-align: right;
  grid-column: 2;
}

.pager-dir {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 4px;
}

.pager-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--accent);
}

/* Right "On this page" TOC */
.toc-rail {
  position: sticky;
  top: calc(var(--header-h) + 28px);
  padding: 36px 0 48px;
}

.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--divider);
}

.toc-list li {
  margin: 0;
}

.toc-list a {
  display: block;
  padding: 6px 0 6px 14px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--muted);
  text-decoration: none;
}

.toc-list a:hover {
  color: var(--text);
}

.toc-list a.is-active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

/* ==========================================================================
   Support Contact Form (Shopify Theme Store Section 21 Compliant)
   ========================================================================== */
.support-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.85fr);
  gap: 36px;
  align-items: start;
  margin-top: 24px;
}

.support-form {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
}

.form-row-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.field-group {
  margin-bottom: 20px;
}

.field-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}

.req-mark {
  color: var(--accent);
  font-family: var(--font-mono);
  margin-left: 2px;
}

.field-hint {
  margin: 5px 0 0;
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.45;
}

.support-form input[type="text"],
.support-form input[type="email"],
.support-form input[type="url"],
.support-form select,
.support-form textarea {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 0;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.5;
}

.support-form textarea {
  min-height: 156px;
  resize: vertical;
}

.support-form input:focus,
.support-form select:focus,
.support-form textarea:focus {
  background: var(--surface);
  border-color: var(--accent);
  outline: 2px solid var(--accent);
  outline-offset: 0;
}

/* File Upload Zone */
.upload-box {
  padding: 16px;
  background: var(--bg);
  border: 1px dashed var(--border);
}

.upload-box.is-dragover {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.upload-box input[type="file"] {
  width: 100%;
  min-height: 44px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--text);
}

.upload-box input[type="file"]::file-selector-button {
  min-height: 36px;
  padding: 6px 14px;
  margin-right: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  cursor: pointer;
}

.upload-box input[type="file"]::file-selector-button:hover {
  border-color: var(--text);
  background: var(--container);
}

.file-list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 6px 10px;
  background: var(--surface);
  border: 1px solid var(--divider);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.file-remove {
  min-height: 28px;
  padding: 2px 8px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  cursor: pointer;
}

/* Honeypot (anti-spam) */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.submit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  background: var(--text);
  border: 1px solid var(--text);
  border-radius: 0;
  color: var(--bg);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
}

.submit-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
}

.submit-btn:disabled {
  opacity: 0.65;
  cursor: wait;
}

.status-banner {
  margin: 18px 0 0;
  padding: 14px 16px;
  border: 1px solid transparent;
  font-size: 0.9rem;
  line-height: 1.55;
}

.status-banner:empty {
  display: none;
}

.status-banner.is-ok {
  background: var(--ok-bg);
  border-color: var(--ok-border);
  color: var(--ok-text);
}

.status-banner.is-err {
  background: var(--err-bg);
  border-color: var(--err-border);
  color: var(--err-text);
}

.support-aside {
  display: grid;
  gap: 18px;
}

.aside-card {
  padding: 20px;
  background: var(--container);
  border: 1px solid var(--border);
  font-size: 0.875rem;
}

.aside-card h2 {
  margin: 0 0 10px !important;
  padding: 0 !important;
  border: 0 !important;
  font-family: var(--font-mono) !important;
  font-size: 0.78rem !important;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.aside-card ul {
  margin: 0;
  padding-left: 18px;
}

.aside-card li {
  margin-bottom: 6px;
}

/* ==========================================================================
   Full-Text Search Dialog (<dialog>)
   ========================================================================== */
.search-dialog {
  width: min(680px, calc(100vw - 32px));
  max-height: min(78vh, 640px);
  margin: 8vh auto auto;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--text);
  border-radius: 0;
}

.search-dialog::backdrop {
  background: rgba(28, 23, 20, 0.58);
}

.search-dialog__head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.search-dialog__input {
  flex: 1;
  min-height: 40px;
  border: 0;
  background: transparent;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
}

.search-dialog__input:focus {
  outline: none;
}

.search-dialog__close {
  min-height: 36px;
  padding: 0 12px;
  background: var(--container);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
}

.search-results {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: calc(78vh - 110px);
  overflow-y: auto;
}

.search-results li {
  border-bottom: 1px solid var(--divider);
}

.search-result-link {
  display: block;
  padding: 14px 18px;
  text-decoration: none;
  color: var(--text);
}

.search-result-link:hover,
.search-result-link.is-selected {
  background: var(--container);
}

.search-result-meta {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 3px;
}

.search-result-title {
  display: block;
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.search-result-snippet {
  display: block;
  font-size: 0.825rem;
  color: var(--muted);
  line-height: 1.45;
}

.search-result-snippet mark {
  background: var(--accent-soft);
  color: var(--text);
  padding: 0 2px;
  font-weight: 600;
}

.search-empty {
  padding: 28px 18px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

/* ==========================================================================
   Site Footer (Reversed Charcoal Ink Band)
   ========================================================================== */
.site-footer {
  margin-top: auto;
  background: var(--ink-bg);
  color: var(--ink-text);
  border-top: 1px solid var(--text);
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
  font-size: 0.875rem;
}

.footer-brand strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-accent);
  margin-bottom: 6px;
}

.footer-brand p {
  margin: 0;
  color: var(--ink-muted);
  max-width: 48ch;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
}

.footer-links a {
  color: var(--ink-text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-links a:hover {
  color: var(--ink-accent);
}

/* ==========================================================================
   Responsive Breakpoints (1400px, 1240px, 820px)
   ========================================================================== */
@media (max-width: 1400px) {
  .brand-meta {
    display: none;
  }
}

@media (max-width: 1240px) {
  .top-nav {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .doc-shell {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 32px;
  }

  .toc-rail {
    display: none;
  }
}

@media (max-width: 820px) {
  .doc-shell,
  .doc-shell--wide {
    grid-template-columns: minmax(0, 1fr);
    padding: 0 18px;
  }

  .chapter-rail {
    display: none;
  }

  .header-inner {
    padding: 0 18px;
  }

  .brand-meta {
    display: none;
  }

  .support-grid,
  .preset-grid,
  .chapter-cards,
  .form-row-2,
  .chapter-pager {
    grid-template-columns: minmax(0, 1fr);
  }

  .pager-link--next {
    grid-column: 1;
    text-align: left;
  }

  .support-form {
    padding: 20px 16px;
  }

  .search-trigger kbd {
    display: none;
  }
}