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

html {
  color-scheme: dark;
}

body {
  min-height: 100vh;
  color: #eee;
  font-family: "Better VCR", monospace;
  line-height: 1.6;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(14, 34, 62, 0.35), transparent 70%),
    #060b14;
}

a {
  color: inherit;
}

/* ---- Per-theme docs tokens ---- */

[data-theme="lcd-glass"] {
  --docs-text: var(--lcd-text-primary, #e0fefe);
  --docs-text-muted: rgba(224, 254, 254, 0.62);
  --docs-border: var(--lcd-glass-border, rgba(170, 220, 255, 0.22));
  --docs-chrome-bg: rgba(10, 22, 40, 0.72);
  --docs-chrome-hover: rgba(48, 92, 144, 0.35);
  --docs-chrome-active: rgba(48, 92, 144, 0.55);
  --docs-shell-border: rgba(170, 220, 255, 0.28);
  --docs-grad-1: rgba(6, 11, 20, 0.92);
  --docs-grad-2: rgba(14, 34, 62, 0.88);
  --docs-grad-3: rgba(36, 78, 120, 0.75);
  --docs-grad-4: rgba(0, 180, 220, 0.22);
  --docs-link: #a8e8ff;
  --docs-radius: 16px;
  --docs-accent: rgba(0, 255, 255, 0.45);
}

[data-theme="sesh-glass"] {
  --docs-text: var(--sesh-text-primary, #fff6e8);
  --docs-text-muted: rgba(255, 246, 232, 0.62);
  --docs-border: var(--sesh-glass-border, rgba(255, 230, 90, 0.32));
  --docs-chrome-bg: rgba(40, 8, 8, 0.72);
  --docs-chrome-hover: rgba(242, 13, 13, 0.35);
  --docs-chrome-active: rgba(229, 242, 13, 0.22);
  --docs-shell-border: rgba(255, 230, 90, 0.35);
  --docs-grad-1: rgba(30, 4, 4, 0.94);
  --docs-grad-2: rgba(120, 8, 8, 0.82);
  --docs-grad-3: rgba(180, 30, 8, 0.7);
  --docs-grad-4: rgba(229, 242, 13, 0.18);
  --docs-link: #ffe8a8;
  --docs-radius: 16px;
  --docs-accent: rgba(242, 13, 13, 0.55);
}

[data-theme="3026-d3c0"] {
  --docs-text: var(--d3c0-text-primary, #c5f467);
  --docs-text-muted: rgba(164, 177, 205, 0.75);
  --docs-border: var(--d3c0-glass-border, rgba(159, 239, 0, 0.42));
  --docs-chrome-bg: rgba(17, 25, 39, 0.88);
  --docs-chrome-hover: rgba(49, 63, 85, 0.65);
  --docs-chrome-active: rgba(159, 239, 0, 0.14);
  --docs-shell-border: rgba(159, 239, 0, 0.38);
  --docs-grad-1: rgba(17, 25, 39, 0.96);
  --docs-grad-2: rgba(26, 35, 50, 0.9);
  --docs-grad-3: rgba(49, 63, 85, 0.75);
  --docs-grad-4: rgba(159, 239, 0, 0.12);
  --docs-link: var(--d3c0-htb-amber, #ffaf00);
  --docs-radius: 4px;
  --docs-accent: rgba(159, 239, 0, 0.45);
}

/* ---- Chrome panels (sidebar + top bar — no overlay halftone) ---- */

.chrome-panel {
  color: var(--docs-text);
  background: var(--docs-chrome-bg);
  border: 1px solid var(--docs-border);
  border-radius: var(--docs-radius);
  backdrop-filter: blur(14px) saturate(130%);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 8px 24px rgba(0, 0, 0, 0.28);
}

/* ---- Top bar (theme-panel — full theme graphics) ---- */

.top-bar.theme-panel {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.75rem 1.25rem;
  margin: 0 auto 1.25rem;
  max-width: 88rem;
  border-radius: 0;
  border-left: none;
  border-right: none;
  border-top: none;
  overflow: hidden;
}

/* LCD Glass — subtle isometric lattice + chromatic wash in the header */
[data-theme="lcd-glass"] .top-bar.theme-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    repeating-linear-gradient(
      -45deg,
      transparent 0,
      transparent 11px,
      rgba(0, 255, 255, 0.045) 11px,
      rgba(0, 255, 255, 0.045) 12px
    ),
    repeating-linear-gradient(
      45deg,
      transparent 0,
      transparent 11px,
      rgba(209, 76, 255, 0.035) 11px,
      rgba(209, 76, 255, 0.035) 12px
    ),
    radial-gradient(ellipse 85% 140% at 50% -30%, rgba(48, 92, 144, 0.45), transparent 60%);
  mix-blend-mode: screen;
  opacity: 0.9;
}

[data-theme="lcd-glass"] .top-bar.theme-panel > * {
  position: relative;
  z-index: 1;
}

/* Sesh Glass + 3026 D3C0 decorative layers come from themes/*/theme.css
   (.theme-panel::before halftone / sunburst). Ensure header controls stay above. */
[data-theme="sesh-glass"] .top-bar.theme-panel > *,
[data-theme="3026-d3c0"] .top-bar.theme-panel > * {
  position: relative;
  z-index: 1;
}

.home-link {
  text-decoration: none;
  letter-spacing: 0.06em;
  font-size: 0.82rem;
  color: var(--docs-text-muted);
  transition: color 0.15s ease;
}

.home-link:hover,
.home-link:focus-visible {
  color: var(--docs-text);
  outline: none;
}

.page-title {
  flex: 1;
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--docs-text);
}

.github-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.75rem;
  text-decoration: none;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  border-radius: calc(var(--docs-radius) - 4px);
  border: 1px solid var(--docs-border);
  background: rgba(0, 0, 0, 0.25);
  color: var(--docs-text);
  transition:
    background 0.15s ease,
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}

.github-link:hover,
.github-link:focus-visible {
  background: var(--docs-chrome-hover);
  border-color: var(--docs-accent);
  box-shadow: 0 0 16px var(--docs-accent);
  outline: none;
}

.github-icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.theme-control {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--docs-text-muted);
}

.theme-control select {
  font-family: inherit;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  padding: 0.35rem 1.75rem 0.35rem 0.55rem;
  border-radius: calc(var(--docs-radius) - 6px);
  border: 1px solid var(--docs-border);
  background-color: rgba(0, 0, 0, 0.45);
  color: var(--docs-text);
  cursor: pointer;
  color-scheme: dark;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23aaa' d='M1 1.5 6 6.5 11 1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.55rem center;
}

.theme-control select option {
  background-color: #0a1628;
  color: #e0fefe;
}

[data-theme="sesh-glass"] .theme-control select option {
  background-color: #1a0808;
  color: #fff6e8;
}

[data-theme="3026-d3c0"] .theme-control select option {
  background-color: #111927;
  color: #c5f467;
}

.theme-control select:focus-visible {
  outline: 2px solid var(--docs-accent);
  outline-offset: 2px;
}

/* ---- Layout: sidebar + wide main ---- */

.layout {
  display: grid;
  grid-template-columns: minmax(15rem, 20rem) minmax(0, 1fr);
  gap: 1.25rem;
  max-width: 88rem;
  margin: 0 auto;
  padding: 0 1.25rem 2.5rem;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: 4.25rem;
}

.sidebar-panel {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}

.sidebar-tabs {
  display: flex;
  flex-shrink: 0;
  border-bottom: 1px solid var(--docs-border);
}

.sidebar-tab {
  flex: 1;
  margin: 0;
  padding: 0.6rem 0.75rem;
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--docs-text-muted);
  font-family: inherit;
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    color 0.15s ease,
    background 0.15s ease,
    border-color 0.15s ease;
}

.sidebar-tab:hover:not(:disabled),
.sidebar-tab:focus-visible {
  color: var(--docs-text);
  background: var(--docs-chrome-hover);
  outline: none;
}

.sidebar-tab[aria-selected="true"] {
  color: var(--docs-text);
  border-bottom-color: var(--docs-accent);
  background: var(--docs-chrome-active);
  text-shadow: var(--theme-text-shadow);
}

.sidebar-tab:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.sidebar-tab-panel {
  padding: 0.85rem 0.9rem;
  max-height: calc(100vh - 8.5rem);
  overflow: auto;
}

.sidebar-tab-panel[hidden] {
  display: none;
}

.nav-heading {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--docs-text-muted);
  margin-bottom: 0.65rem;
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
}

/* ---- File tree ---- */

.file-tree {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.file-tree ul {
  list-style: none;
  margin: 0.15rem 0 0.2rem;
  padding-left: 0.65rem;
  border-left: 1px solid rgba(255, 255, 255, 0.06);
}

.tree-folder > details {
  border-radius: calc(var(--docs-radius) - 6px);
}

.tree-folder > details > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.4rem;
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.03em;
  color: var(--docs-text-muted);
  border-radius: calc(var(--docs-radius) - 6px);
  user-select: none;
}

.tree-folder > details > summary::-webkit-details-marker {
  display: none;
}

.tree-folder > details > summary::before {
  content: "▸";
  flex-shrink: 0;
  width: 0.65rem;
  font-size: 0.62rem;
  color: var(--docs-text-muted);
  transition: transform 0.15s ease;
}

.tree-folder > details[open] > summary::before {
  transform: rotate(90deg);
}

.tree-folder > details > summary:hover,
.tree-folder > details > summary:focus-visible {
  background: var(--docs-chrome-hover);
  outline: none;
}

.tree-folder-name {
  min-width: 0;
  word-break: break-all;
}

.tree-file {
  margin: 0.05rem 0;
}

.file-item {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  padding: 0.5rem 0.55rem;
  text-decoration: none;
  border-radius: calc(var(--docs-radius) - 6px);
  border: 1px solid transparent;
  transition:
    background 0.15s ease,
    border-color 0.15s ease;
}

.file-item:hover,
.file-item:focus-visible {
  background: var(--docs-chrome-hover);
  outline: none;
}

.file-item[aria-current="page"] {
  background: var(--docs-chrome-active);
  border-color: var(--docs-border);
}

.file-icon {
  flex-shrink: 0;
  width: 1.1rem;
  height: 1.35rem;
  margin-top: 0.1rem;
  border-radius: 2px;
  border: 1px solid var(--docs-border);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), transparent 40%),
    rgba(0, 0, 0, 0.3);
  position: relative;
}

.file-icon::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 0.45rem;
  height: 0.45rem;
  background: var(--docs-chrome-bg);
  border-left: 1px solid var(--docs-border);
  border-bottom: 1px solid var(--docs-border);
  border-bottom-left-radius: 2px;
}

.file-meta {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
}

.file-name {
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--docs-text);
  word-break: break-all;
}

.file-label {
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--docs-text-muted);
}

.file-item[aria-current="page"] .file-name {
  text-shadow: var(--theme-text-shadow);
}

/* ---- TOC ---- */

.toc-empty {
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  line-height: 1.45;
  color: var(--docs-text-muted);
}

.toc ol {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.toc a {
  display: block;
  padding: 0.2rem 0;
  text-decoration: none;
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  line-height: 1.35;
  color: var(--docs-text-muted);
  transition: color 0.15s ease;
}

.toc a:hover,
.toc a:focus-visible {
  color: var(--docs-text);
  outline: none;
  text-shadow: var(--theme-text-shadow);
}

.toc-depth-3 a {
  padding-left: 0.65rem;
}

.toc-depth-4 a {
  padding-left: 1.25rem;
}

/* ---- Doc reading pane ---- */

.doc-main {
  min-width: 0;
}

.doc-shell {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  overflow: clip;
  contain: paint;
  border: 1px solid var(--docs-shell-border);
  border-radius: var(--docs-radius);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 16px 40px rgba(0, 0, 0, 0.35);
  color: var(--docs-text);
}

.doc-shell-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(
    135deg,
    var(--docs-grad-1),
    var(--docs-grad-2),
    var(--docs-grad-3),
    var(--docs-grad-4),
    var(--docs-grad-2),
    var(--docs-grad-1)
  );
  background-size: 400% 400%;
  animation: docs-grad-drift 22s ease-in-out infinite;
  opacity: 0.95;
}

.doc-shell-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(255, 255, 255, 0.06), transparent 60%),
    rgba(0, 0, 0, 0.18);
}

@keyframes docs-grad-drift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.doc-header,
.doc-content {
  position: relative;
  z-index: 1;
}

.doc-header {
  padding: 1.1rem 1.5rem 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.doc-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.doc-title {
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  font-size: clamp(0.95rem, 2.2vw, 1.15rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  word-break: break-all;
}

.github-file-link {
  flex-shrink: 0;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-decoration: none;
  padding: 0.3rem 0.55rem;
  border-radius: calc(var(--docs-radius) - 6px);
  border: 1px solid var(--docs-border);
  color: var(--docs-link);
  background: rgba(0, 0, 0, 0.2);
  transition:
    background 0.15s ease,
    border-color 0.15s ease;
}

.github-file-link:hover,
.github-file-link:focus-visible {
  background: var(--docs-chrome-hover);
  border-color: var(--docs-accent);
  outline: none;
}

.doc-stats {
  margin-top: 0.4rem;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--docs-text-muted);
}

.doc-content {
  padding: 1.35rem 1.65rem 2rem;
  background: rgba(0, 0, 0, 0.08);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  line-height: 1.65;
}

.loading,
.doc-error {
  font-size: 0.88rem;
  letter-spacing: 0.04em;
}

.doc-error {
  color: #ffb4b4;
}

/* ---- Markdown prose ---- */

.doc-content :is(h1, h2, h3, h4, h5, h6) {
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.35;
  margin: 1.5rem 0 0.65rem;
  color: var(--docs-text);
  text-shadow: var(--theme-text-shadow);
}

.doc-content h1 {
  font-size: 1.35rem;
  margin-top: 0;
}

.doc-content h2 {
  font-size: 1.12rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.doc-content h3 { font-size: 1rem; }
.doc-content h4 { font-size: 0.92rem; }

.doc-content :is(h2, h3, h4) {
  scroll-margin-top: 5.5rem;
}

.doc-content p,
.doc-content ul,
.doc-content ol,
.doc-content blockquote,
.doc-content pre,
.doc-content table {
  margin: 0.75rem 0;
  color: var(--docs-text);
}

.doc-content ul,
.doc-content ol {
  padding-left: 1.35rem;
}

.doc-content li + li {
  margin-top: 0.25rem;
}

.doc-content a {
  color: var(--docs-link);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.doc-content a:hover,
.doc-content a:focus-visible {
  text-shadow: var(--theme-text-shadow);
  outline: none;
}

.doc-content blockquote {
  padding: 0.65rem 1rem;
  border-left: 3px solid var(--docs-accent);
  background: rgba(0, 0, 0, 0.25);
  font-size: 0.92rem;
}

.doc-content :not(pre) > code {
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  font-size: 0.86em;
  padding: 0.12em 0.35em;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.doc-content pre {
  padding: 0.85rem 1rem;
  border-radius: calc(var(--docs-radius) - 4px);
  overflow-x: auto;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8rem;
  line-height: 1.45;
}

.doc-content pre code {
  background: none;
  padding: 0;
  border: none;
}

.doc-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}

.doc-content th,
.doc-content td {
  padding: 0.45rem 0.65rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  text-align: left;
  vertical-align: top;
}

.doc-content th {
  background: rgba(0, 0, 0, 0.3);
  letter-spacing: 0.04em;
}

.doc-content hr {
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  margin: 1.5rem 0;
}

.fallback-md {
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.82rem;
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
}

/* ---- Responsive ---- */

@media (max-width: 800px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

  .sidebar-panel {
    flex: 1 1 100%;
  }

  .sidebar-tab-panel {
    max-height: none;
  }

  .top-bar {
    padding: 0.75rem 1rem;
  }

  .github-link span {
    display: none;
  }

  .page-title {
    order: 3;
    flex-basis: 100%;
  }
}

@media (max-width: 480px) {
  .doc-header-row {
    flex-direction: column;
    align-items: stretch;
  }

  .github-file-link {
    align-self: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .doc-shell-bg {
    animation: none;
    background-position: 0% 50%;
  }
}