/* ---------------------------------------------------------------
   The Vault — restrained terminal/console aesthetic.
   Dark-first, one disciplined accent, JetBrains Mono for chrome,
   system sans for reading prose. No glow, no neon, no rain.
   --------------------------------------------------------------- */

@font-face {
  font-family: "JetBrains Mono";
  src: url("vendor/fonts/JetBrainsMono-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("vendor/fonts/JetBrainsMono-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("vendor/fonts/JetBrainsMono-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("vendor/fonts/JetBrainsMono-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Dark (default) */
  --bg: #0d1117;
  --bg-raised: #11161d;
  --bg-inset: #161b22;
  --bg-hover: #1c232c;
  --bg-active: #222a35;
  --border: #232a35;
  --border-soft: #1a2028;
  --text: #e6edf3;
  --text-secondary: #9aa7b6;
  --text-tertiary: #6b7684;
  --accent: #39d0d8;
  --accent-strong: #5cdde3;
  --accent-soft: rgba(57, 208, 216, 0.12);
  --accent-border: rgba(57, 208, 216, 0.35);
  --grid-dot: rgba(230, 237, 243, 0.035);
  --shadow: 0 12px 40px rgba(0,0,0,0.45);
  --link-broken: #545d68;

  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #f6f7f9;
  --bg-raised: #ffffff;
  --bg-inset: #eef0f3;
  --bg-hover: #eceef1;
  --bg-active: #e4e7eb;
  --border: #dde1e6;
  --border-soft: #e7e9ec;
  --text: #14181f;
  --text-secondary: #565f6b;
  --text-tertiary: #838b95;
  --accent: #0c8a91;
  --accent-strong: #0a7278;
  --accent-soft: rgba(12, 138, 145, 0.09);
  --accent-border: rgba(12, 138, 145, 0.3);
  --grid-dot: rgba(20, 24, 31, 0.045);
  --shadow: 0 12px 32px rgba(20,24,31,0.1);
  --link-broken: #aab0b8;
  color-scheme: light;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f6f7f9;
    --bg-raised: #ffffff;
    --bg-inset: #eef0f3;
    --bg-hover: #eceef1;
    --bg-active: #e4e7eb;
    --border: #dde1e6;
    --border-soft: #e7e9ec;
    --text: #14181f;
    --text-secondary: #565f6b;
    --text-tertiary: #838b95;
    --accent: #0c8a91;
    --accent-strong: #0a7278;
    --accent-soft: rgba(12, 138, 145, 0.09);
    --accent-border: rgba(12, 138, 145, 0.3);
    --grid-dot: rgba(20, 24, 31, 0.045);
    --shadow: 0 12px 32px rgba(20,24,31,0.1);
    --link-broken: #aab0b8;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }

html, body { height: 100%; margin: 0; }

body {
  font-family: var(--font-sans);
  background:
    radial-gradient(var(--grid-dot) 1px, transparent 1px) 0 0 / 22px 22px,
    var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#app { height: 100vh; display: flex; flex-direction: column; }

::selection { background: var(--accent-soft); color: var(--text); }

/* ---------------- Topbar ---------------- */

.topbar {
  height: 52px;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 14px;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(6px);
  z-index: 30;
}

.brand {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.04em;
  white-space: nowrap;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
}
.brand-prompt { color: var(--accent); }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 6px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  flex: 0 0 auto;
}
.icon-btn:hover { background: var(--bg-hover); color: var(--text); }

#hamburger { display: none; }

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 0 0 auto;
}

.palette-trigger {
  flex: 1 1 auto;
  max-width: 420px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-inset);
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  font-size: 12.5px;
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.palette-trigger:hover { border-color: var(--accent-border); background: var(--bg-hover); }
.palette-trigger-text { flex: 1 1 auto; text-align: left; }
.search-kbd {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-tertiary);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
}

/* ---------------- Command palette ---------------- */

.palette {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12vh;
}
.palette[hidden] { display: none; }

.palette-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(6, 8, 11, 0.55);
  backdrop-filter: blur(2px);
}
:root[data-theme="light"] .palette-backdrop { background: rgba(20, 24, 31, 0.25); }

.palette-box {
  position: relative;
  width: min(600px, 90vw);
  max-height: 62vh;
  display: flex;
  flex-direction: column;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.palette-input-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
}
.palette-prompt { color: var(--accent); font-weight: 700; font-size: 15px; }
.palette-input {
  flex: 1 1 auto;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14.5px;
}
.palette-input::placeholder { color: var(--text-tertiary); }
.palette-cursor {
  width: 7px;
  height: 15px;
  background: var(--accent);
  opacity: 0.85;
  animation: caret-blink 1.1s steps(1) infinite;
  flex: 0 0 auto;
}
.palette-input:focus ~ .palette-cursor { display: none; }
@keyframes caret-blink {
  0%, 45% { opacity: 0.85; }
  50%, 100% { opacity: 0; }
}

.search-results {
  overflow-y: auto;
  padding: 6px;
}

.search-result-item {
  display: block;
  padding: 9px 10px;
  border-radius: 7px;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}
.search-result-item:hover,
.search-result-item.active { background: var(--bg-hover); }
.search-result-title {
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 2px;
}
.search-result-breadcrumb {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-tertiary);
  margin-bottom: 4px;
  letter-spacing: 0.02em;
}
.search-result-snippet {
  font-size: 12.5px;
  color: var(--text-secondary);
  line-height: 1.45;
}
.search-result-snippet mark {
  background: var(--accent-soft);
  color: var(--accent-strong);
  border-radius: 2px;
  padding: 0 1px;
}
.search-empty {
  padding: 20px 10px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--text-tertiary);
  text-align: center;
}

/* ---------------- Layout ---------------- */

.body-row { flex: 1 1 auto; display: flex; min-height: 0; }

.sidebar {
  width: 272px;
  flex: 0 0 auto;
  border-right: 1px solid var(--border);
  overflow-y: auto;
  background: var(--bg-raised);
  padding: 10px 8px 40px;
}

.sidebar-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
  padding: 6px 10px 8px;
  text-transform: lowercase;
}

.sidebar-scrim { display: none; }

.reader { flex: 1 1 auto; overflow-y: auto; min-width: 0; }

.right-rail {
  width: 240px;
  flex: 0 0 auto;
  border-left: 1px solid var(--border);
  overflow-y: auto;
  padding: 18px 14px 40px;
}
.right-rail[hidden] { display: none; }
.rail-block { margin-bottom: 26px; }

/* ---------------- Tree (styled like `tree` output) ---------------- */

.tree-track, .tree-module { margin-bottom: 1px; position: relative; }

.tree-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border-radius: 5px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text);
  user-select: none;
  white-space: nowrap;
}
.tree-row:hover { background: var(--bg-hover); }

.tree-track > .tree-row {
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.tree-module {
  margin-left: 9px;
  padding-left: 8px;
  border-left: 1px solid var(--border-soft);
}
.tree-module > .tree-row {
  font-weight: 500;
  font-size: 12px;
  color: var(--text-secondary);
}

.tree-caret {
  flex: 0 0 auto;
  width: 11px;
  height: 11px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease;
  color: var(--text-tertiary);
}
.tree-caret svg { width: 8px; height: 8px; }
.is-collapsed > .tree-row .tree-caret { transform: rotate(-90deg); }

.tree-children { overflow: hidden; }
.is-collapsed > .tree-children { display: none; }

.tree-module .tree-children {
  margin-left: 9px;
  padding-left: 8px;
  border-left: 1px solid var(--border-soft);
}

.tree-note {
  display: block;
  padding: 5px 8px;
  margin: 1px 0;
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tree-note:hover { background: var(--bg-hover); color: var(--text); }
.tree-note.active {
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 600;
}

/* ---------------- Landing dashboard ---------------- */

.landing { max-width: 920px; margin: 0 auto; padding: 64px 24px 100px; }
.note-view ~ .landing { display: none; }

.landing-hero { text-align: center; margin-bottom: 56px; }
.landing-glyph {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent);
  font-size: 15px;
  margin-bottom: 10px;
}
.landing-title {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 34px;
  letter-spacing: 0.06em;
  margin: 0 0 12px;
}
.landing-stats {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-tertiary);
  margin: 0;
}

.landing-tracks {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.track-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  transition: border-color 0.18s ease, transform 0.18s ease, background-color 0.18s ease;
}
.track-card:hover {
  border-color: var(--accent-border);
  background: var(--bg-hover);
  transform: translateY(-2px);
}
.track-card-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.track-monogram {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border-radius: 8px;
  border: 1px solid var(--accent-border);
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.track-name {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14.5px;
  letter-spacing: 0.02em;
}
.track-count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 2px;
}
.track-desc {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text-secondary);
  margin: 0;
}

/* ---------------- Reader ---------------- */

.note-view { max-width: 720px; margin: 0 auto; padding: 44px 24px 120px; }

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-tertiary);
  margin-bottom: 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}
.breadcrumb .crumb-prompt { color: var(--accent); }
.breadcrumb .sep { color: var(--text-tertiary); opacity: 0.55; }
.breadcrumb .crumb-current { color: var(--text-secondary); }

.note-title {
  font-family: var(--font-mono);
  font-size: 25px;
  font-weight: 700;
  letter-spacing: -0.005em;
  line-height: 1.3;
  margin: 0 0 14px;
}

.note-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 32px; }
.tag-chip {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: 5px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.note-body {
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--text);
}

.note-body h1, .note-body h2, .note-body h3, .note-body h4 {
  font-family: var(--font-mono);
  font-weight: 650;
  letter-spacing: -0.005em;
  line-height: 1.4;
  margin: 2em 0 0.6em;
  scroll-margin-top: 20px;
}
.note-body h1 { font-size: 21px; }
.note-body h2 { font-size: 18.5px; }
.note-body h3 { font-size: 16px; }
.note-body h4 { font-size: 14.5px; }
.note-body > *:first-child { margin-top: 0; }

.note-body p { margin: 0 0 1.1em; }

.note-body a {
  color: var(--accent-strong);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-border);
}
.note-body a:hover { border-bottom-color: var(--accent-strong); }
.note-body .wikilink-broken { color: var(--link-broken); border-bottom: none; cursor: default; }

.note-body ul, .note-body ol { margin: 0 0 1.1em; padding-left: 1.4em; }
.note-body li { margin-bottom: 0.35em; }
.note-body li > ul, .note-body li > ol { margin-top: 0.35em; margin-bottom: 0; }

.note-body blockquote {
  margin: 0 0 1.1em;
  padding: 2px 0 2px 16px;
  border-left: 2px solid var(--accent-border);
  color: var(--text-secondary);
}
.note-body blockquote p:last-child { margin-bottom: 0; }

.note-body code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-inset);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

.note-body pre {
  background: var(--bg-inset);
  border-radius: 8px;
  padding: 2px;
  overflow: hidden;
  margin: 0 0 1.4em;
  border: 1px solid var(--border);
}
.note-body pre code.hljs {
  display: block;
  overflow-x: auto;
  background: transparent !important;
  padding: 14px 16px;
  font-size: 12.5px;
  line-height: 1.6;
  white-space: pre;
  border-radius: 0;
}

.note-body table {
  border-collapse: collapse;
  width: 100%;
  margin: 0 0 1.4em;
  font-size: 13.5px;
  display: block;
  overflow-x: auto;
}
.note-body th, .note-body td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
}
.note-body th { background: var(--bg-inset); font-weight: 600; font-family: var(--font-mono); font-size: 12px; }

.note-body hr { border: none; border-top: 1px solid var(--border); margin: 2.2em 0; }
.note-body img { max-width: 100%; border-radius: 8px; }

/* ---------------- Backlinks ---------------- */

.section-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

.backlinks { margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--border); }
.backlinks[hidden] { display: none; }
.backlinks-list { display: flex; flex-direction: column; gap: 4px; }
.backlink-item {
  display: flex;
  flex-direction: column;
  padding: 8px 10px;
  border-radius: 6px;
  text-decoration: none;
  color: inherit;
}
.backlink-item:hover { background: var(--bg-hover); }
.backlink-title { font-size: 13.5px; font-weight: 600; }
.backlink-breadcrumb {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-tertiary);
  margin-top: 2px;
}

/* ---------------- Right rail: ToC ---------------- */

.toc { display: flex; flex-direction: column; gap: 1px; }
.toc a {
  display: block;
  padding: 4px 8px;
  border-left: 2px solid transparent;
  font-size: 12.5px;
  line-height: 1.4;
  color: var(--text-tertiary);
  text-decoration: none;
  border-radius: 0 4px 4px 0;
}
.toc a.toc-h3 { padding-left: 18px; font-size: 12px; }
.toc a:hover { color: var(--text); background: var(--bg-hover); }
.toc a.active {
  color: var(--accent-strong);
  border-left-color: var(--accent);
  background: var(--accent-soft);
}

#local-graph { width: 100%; height: auto; border: 1px solid var(--border); border-radius: 8px; background: var(--bg-raised); cursor: pointer; }

/* ---------------- Graph view ---------------- */

.graph-view {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: var(--bg);
  display: flex;
  flex-direction: column;
}
.graph-view[hidden] { display: none; }
.graph-view-header {
  height: 52px;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  border-bottom: 1px solid var(--border);
}
.graph-view-title {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}
.graph-view-sub { color: var(--text-tertiary); font-weight: 400; margin-left: 6px; }
.global-graph-canvas { flex: 1 1 auto; width: 100%; height: 100%; display: block; cursor: grab; }

/* ---------------- Scrollbars ---------------- */

.sidebar::-webkit-scrollbar, .reader::-webkit-scrollbar,
.right-rail::-webkit-scrollbar, .search-results::-webkit-scrollbar { width: 9px; }
.sidebar::-webkit-scrollbar-thumb, .reader::-webkit-scrollbar-thumb,
.right-rail::-webkit-scrollbar-thumb, .search-results::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--text) 18%, transparent);
  border-radius: 20px;
  border: 2px solid transparent;
  background-clip: content-box;
}
.sidebar::-webkit-scrollbar-track, .reader::-webkit-scrollbar-track { background: transparent; }

/* ---------------- Mobile ---------------- */

@media (max-width: 980px) {
  .right-rail { display: none; }
}

@media (max-width: 860px) {
  #hamburger { display: inline-flex; }
  .palette-trigger-text { display: none; }
  .palette-trigger { max-width: 40px; justify-content: center; padding: 0; }
  .search-kbd { display: none; }

  .sidebar {
    position: fixed;
    top: 52px;
    left: 0;
    bottom: 0;
    width: 82vw;
    max-width: 320px;
    transform: translateX(-100%);
    z-index: 25;
    box-shadow: var(--shadow);
    transition: transform 0.2s ease;
  }
  .sidebar.open { transform: translateX(0); }

  .sidebar-scrim {
    display: block;
    position: fixed;
    top: 52px;
    left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.4);
    z-index: 20;
  }
  .sidebar-scrim[hidden] { display: none; }

  .landing-tracks { grid-template-columns: 1fr; }
  .note-view { padding: 32px 18px 100px; }
  .note-title { font-size: 21px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}