:root {
  --bg: #1e1e2e;
  --panel: #181825;
  --panel-2: #11111b;
  --text: #cdd6f4;
  --muted: #9399b2;
  --accent: #89b4fa;
  --accent-2: #cba6f7;
  --link: #94e2d5;
  --link-hover: #f5e0dc;
  --border: #313244;
  --code-bg: #181825;
  --stub: #f9e2af;
  --published: #a6e3a1;
  --living: #cba6f7;
  --shadow: 0 1px 0 rgba(0,0,0,.3);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #faf9f6;
    --panel: #f3f1eb;
    --panel-2: #ecebe4;
    --text: #2a2a2a;
    --muted: #6b6b6b;
    --accent: #1f6feb;
    --accent-2: #6f42c1;
    --link: #1f6feb;
    --link-hover: #cf222e;
    --border: #d8d6cf;
    --code-bg: #ecebe4;
    --stub: #b78700;
    --published: #1a7f37;
    --living: #6f42c1;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

body {
  display: grid;
  grid-template-columns: 320px 1fr;
  min-height: 100vh;
}

a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-hover); text-decoration: underline; }

#sidebar {
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}

#sidebar header {
  padding: 18px 18px 10px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text) !important;
  text-decoration: none !important;
}
.brand:hover { opacity: 0.85; }
.brand .dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: var(--shadow);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 16px; letter-spacing: .2px; }
.brand-text small { color: var(--muted); font-size: 12px; }

#search {
  width: 100%;
  padding: 8px 10px;
  font: inherit;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  outline: none;
}
#search:focus { border-color: var(--accent); }

.actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.actions button {
  flex: 1;
  padding: 6px 10px;
  font: inherit;
  font-size: 12.5px;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 5px;
  cursor: pointer;
}
.actions button:hover { border-color: var(--accent); color: var(--accent); }

.mode-banner {
  font-size: 12px;
  padding: 6px 8px;
  border-radius: 4px;
  background: var(--panel-2);
  color: var(--muted);
  border: 1px dashed var(--border);
}
.mode-banner.local { color: var(--accent-2); border-color: var(--accent-2); }

#tree {
  flex: 1;
  overflow-y: auto;
  padding: 12px 8px 24px;
}
#tree details {
  margin: 4px 4px 8px;
}
#tree summary {
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .8px;
  text-transform: uppercase;
  user-select: none;
}
#tree summary:hover { color: var(--text); background: var(--panel-2); }
#tree ul {
  list-style: none;
  margin: 4px 0 0;
  padding: 0 0 0 6px;
  border-left: 1px solid var(--border);
}
#tree li {
  padding: 0;
  margin: 2px 0;
}
#tree a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border-radius: 4px;
  color: var(--text);
  font-size: 13.5px;
}
#tree a:hover { background: var(--panel-2); text-decoration: none; }
#tree a.active {
  background: var(--panel-2);
  color: var(--accent);
  font-weight: 500;
}
#tree a .status {
  width: 6px; height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}
#tree a .status.stub { background: var(--stub); }
#tree a .status.published { background: var(--published); }
#tree a .status.living { background: var(--living); box-shadow: 0 0 0 2px color-mix(in srgb, var(--living) 30%, transparent); }

#sidebar footer {
  padding: 10px 18px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}

main {
  display: grid;
  grid-template-rows: 1fr auto;
  min-height: 100vh;
}

#note {
  padding: 56px max(28px, 6vw);
  max-width: 880px;
  width: 100%;
  margin: 0 auto;
}
#note .loading { color: var(--muted); }

#note h1 { margin-top: 0; font-size: 32px; line-height: 1.2; }
#note h2 { margin-top: 36px; font-size: 22px; border-bottom: 1px solid var(--border); padding-bottom: 6px; }
#note h3 { margin-top: 28px; font-size: 17px; }
#note p, #note li { font-size: 15.5px; }
#note blockquote {
  margin: 22px 0;
  padding: 14px 18px;
  border-left: 3px solid var(--accent);
  background: var(--panel);
  color: var(--text);
  border-radius: 0 6px 6px 0;
}
#note code {
  font: 13px/1.5 ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  background: var(--code-bg);
  padding: 1px 6px;
  border-radius: 4px;
}
#note pre {
  background: var(--code-bg);
  padding: 14px 16px;
  border-radius: 6px;
  overflow-x: auto;
  border: 1px solid var(--border);
}
#note pre code { background: transparent; padding: 0; }
#note hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }
#note table { border-collapse: collapse; }
#note th, #note td { padding: 6px 12px; border-bottom: 1px solid var(--border); }

.frontmatter-chip {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 18px;
  padding: 4px 10px;
  font-size: 12px;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--muted);
}
.frontmatter-chip .pill {
  font-weight: 600;
  padding: 1px 7px;
  border-radius: 999px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .4px;
}
.frontmatter-chip .pill.stub { background: var(--stub); color: var(--bg); }
.frontmatter-chip .pill.published { background: var(--published); color: var(--bg); }
.frontmatter-chip .pill.living { background: var(--living); color: #fff; }

a.wikilink {
  color: var(--accent);
  border-bottom: 1px dashed var(--accent);
}
a.wikilink:hover { color: var(--accent-2); border-bottom-color: var(--accent-2); }
a.wikilink.broken {
  color: var(--stub);
  border-bottom-color: var(--stub);
  cursor: help;
}

#backlinks {
  border-top: 1px solid var(--border);
  background: var(--panel);
  padding: 22px max(28px, 6vw);
  max-width: 880px;
  width: 100%;
  margin: 0 auto;
}
#backlinks h3 {
  font-size: 13px;
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 1px;
  margin: 0 0 10px;
}
#backlinksList {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 4px;
}

/* Mobile breadcrumb header */
.mobile-only { display: none; }

@media (max-width: 800px) {
  body { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  #sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(85vw, 320px);
    z-index: 10;
    transform: translateX(-100%);
    transition: transform 200ms ease;
    box-shadow: 0 0 0 9999px rgba(0,0,0,0);
  }
  body.nav-open #sidebar {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0,0,0,0.4), 0 0 0 9999px rgba(0,0,0,0.4);
  }
  #mobileHeader.mobile-only {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 5;
  }
  #mobileHeader button {
    background: var(--panel-2);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px 10px;
    font: inherit;
    cursor: pointer;
  }
  #breadcrumb {
    color: var(--muted);
    font-size: 14px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  #note { padding: 24px 18px; }
}

/* Heading anchor buttons */
.heading-link {
  background: transparent;
  border: 0;
  color: var(--muted);
  font: inherit;
  font-size: 0.7em;
  margin-left: 8px;
  padding: 0 4px;
  opacity: 0;
  cursor: pointer;
  vertical-align: middle;
  transition: opacity 150ms;
}
#note h2:hover .heading-link,
#note h3:hover .heading-link {
  opacity: 1;
}
.heading-link:hover { color: var(--accent); }

/* Reading mode */
body.reading #note {
  max-width: 720px;
  font-size: 17px;
  line-height: 1.7;
}
body.reading #note p,
body.reading #note li {
  font-size: 17px;
}
body.reading #sidebar { display: none; }
body.reading main { grid-column: 1 / -1; }

/* Secondary action row */
.actions.secondary {
  margin-top: 4px;
}
.actions.secondary button {
  font-size: 11.5px;
  padding: 5px 8px;
  background: transparent;
  color: var(--muted);
}
.actions.secondary button:hover {
  background: var(--panel-2);
  color: var(--accent);
}

/* Keyboard hint overlay */
.kb-hint {
  position: fixed;
  bottom: 16px;
  right: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 12px;
  color: var(--muted);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  z-index: 20;
}
.kb-hint kbd {
  display: inline-block;
  padding: 1px 6px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  font: 11px ui-monospace, monospace;
  color: var(--text);
}

/* Graph view */
#graph {
  padding: 24px max(28px, 4vw);
  max-width: 1100px;
  margin: 0 auto;
}
#graph h3 {
  margin: 0 0 6px;
  font-size: 22px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 6px;
}
#graph .hint { color: var(--muted); font-size: 13px; margin: 0 0 12px; }
#graph svg {
  width: 100%;
  height: auto;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.graph-edges line {
  stroke: var(--border);
  stroke-width: 1;
  opacity: 0.5;
  transition: stroke 150ms, opacity 150ms;
}
.graph-edges line.hot {
  stroke: var(--accent);
  stroke-width: 2;
  opacity: 1;
}

.graph-nodes .graph-node circle {
  fill: var(--published);
  stroke: var(--bg);
  stroke-width: 2;
  transition: r 150ms, fill 150ms;
}
.graph-nodes .graph-node.status-stub circle { fill: var(--stub); }
.graph-nodes .graph-node.status-published circle { fill: var(--published); }
.graph-nodes .graph-node.status-living circle { fill: var(--living); }
.graph-nodes .graph-node text {
  fill: var(--text);
  font: 10px -apple-system, sans-serif;
  pointer-events: none;
  opacity: 0.8;
}
.graph-nodes .graph-node:hover circle,
.graph-nodes .graph-node.hot circle {
  r: 9;
  fill: var(--accent);
}
.graph-nodes .graph-node.dim circle { opacity: 0.25; }
.graph-nodes .graph-node.dim text { opacity: 0.25; }

.graph-section-label {
  fill: var(--muted);
  font: 600 11px -apple-system, sans-serif;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

body[data-view="graph"] #note,
body[data-view="graph"] #backlinks { display: none; }

body[data-mode="error"] #note .loading { color: var(--link-hover); }