:root {
  --bg:           #141413;
  --bg-alt:       #1f1e1d;
  --bg-muted:     #262524;
  --bg-dark:      #302f2d;
  --text:         #ede9df;
  --text-warm:    #d4cfc2;
  --text-muted:   #87867f;
  --text-faint:   #5c5b56;
  --accent:       #d97757;
  --accent-hover: #e8896b;
  --accent-dim:   rgba(217, 119, 87, 0.12);
  --blue:         #6a9bcc;
  --blue-dim:     rgba(106, 155, 204, 0.12);
  --green:        #788c5d;
  --green-dim:    rgba(120, 140, 93, 0.12);
  --red:          #c75d3a;
  --yellow:       #b89a3a;
  --yellow-dim:   rgba(184, 154, 58, 0.12);
  --violet:       #8b7bb5;
  --violet-dim:   rgba(139, 123, 181, 0.12);
  --border:       rgba(255, 255, 245, 0.08);
  --border-strong:rgba(255, 255, 245, 0.15);
  --sans: 'Segoe UI', system-ui, sans-serif;
  --mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Titlebar ──────────────────────────────────────── */
#titlebar {
  height: 36px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 10px;
  flex-shrink: 0;
}
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.r { background: var(--red); }
.dot.y { background: var(--yellow); }
.dot.g { background: var(--green); }

#titlebar h1 {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-warm);
  letter-spacing: .4px;
}
#titlebar .subtitle {
  font-size: 11px;
  color: var(--text-faint);
  font-family: var(--mono);
}

#search-wrap { margin-left: auto; position: relative; }
#search {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-family: var(--sans);
  font-size: 12px;
  padding: 4px 10px 4px 26px;
  width: 190px;
  outline: none;
  transition: border-color .15s;
}
#search:focus { border-color: var(--accent); }
#search::placeholder { color: var(--text-faint); }
#search-wrap::before {
  content: '/';
  position: absolute;
  left: 9px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 12px;
  pointer-events: none;
}

/* ── Layout ────────────────────────────────────────── */
#layout { display: flex; flex: 1; overflow: hidden; }

/* ── Sidebar ───────────────────────────────────────── */
#sidebar {
  width: 196px;
  background: var(--bg-alt);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}
.sidebar-section { padding: 12px 8px 4px; }
.sidebar-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-faint);
  padding: 0 6px 4px;
}
#sidebar-items { overflow-y: auto; flex: 1; padding-bottom: 12px; }
#sidebar-items::-webkit-scrollbar { width: 3px; }
#sidebar-items::-webkit-scrollbar-track { background: transparent; }
#sidebar-items::-webkit-scrollbar-thumb { background: var(--bg-dark); border-radius: 2px; }

.cat-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
  border-radius: 3px;
  margin: 2px 4px 0;
}
.cat-header:hover { background: var(--bg-muted); color: var(--text-warm); }
.cat-header .cat-tag {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .5px;
  color: var(--text-faint);
  background: var(--bg-muted);
  padding: 1px 5px;
  border-radius: 2px;
}
.cat-header .chevron {
  margin-left: auto;
  font-size: 8px;
  color: var(--text-faint);
  transition: transform .12s;
}
.cat-header.open .chevron { transform: rotate(90deg); }

.cat-entries { display: none; }
.cat-entries.open { display: block; }

.entry-link {
  display: block;
  padding: 4px 10px 4px 24px;
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 3px;
  margin: 1px 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-family: var(--mono);
}
.entry-link:hover { background: var(--bg-muted); color: var(--text-warm); }
.entry-link.active {
  background: var(--accent-dim);
  color: var(--accent);
  border-left: 2px solid var(--accent);
  padding-left: 22px;
}

/* ── Content ───────────────────────────────────────── */
#content { flex: 1; overflow-y: auto; }
#content::-webkit-scrollbar { width: 5px; }
#content::-webkit-scrollbar-track { background: transparent; }
#content::-webkit-scrollbar-thumb { background: var(--bg-dark); border-radius: 3px; }

#welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 8px;
}
.welcome-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-faint);
  font-family: var(--mono);
  letter-spacing: 2px;
}
#welcome p { font-size: 12px; color: var(--text-faint); }

.article { display: none; padding: 32px 40px; max-width: 740px; }
.article.visible { display: block; }

.article-header {
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.article-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 5px;
}
.article-abbr {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-faint);
  margin-bottom: 8px;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  font-family: var(--mono);
}
.badge-hw   { background: var(--blue-dim);          color: var(--blue);      }
.badge-sw   { background: var(--green-dim);         color: var(--green);     }
.badge-net  { background: var(--yellow-dim);        color: var(--yellow);    }
.badge-unit { background: var(--violet-dim);        color: var(--violet);    }
.badge-gen  { background: rgba(135,134,127,.1);     color: var(--text-muted);}
.badge-web  { background: rgba(199,93,58,.12);      color: var(--red);       }
.badge-sec  { background: rgba(184,154,58,.12);     color: var(--yellow);    }
.badge-prog { background: rgba(139,123,181,.15);    color: var(--violet);    }

.article-body { line-height: 1.75; color: var(--text-warm); }
.article-body p { margin-bottom: 14px; }
.article-body strong { color: var(--accent); font-weight: 600; }
.article-body em { color: var(--text-warm); font-style: italic; }

.callout {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  border-radius: 0 4px 4px 0;
  padding: 12px 16px;
  margin: 16px 0;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}
.callout .callout-label {
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--accent);
  margin-bottom: 6px;
  font-family: var(--mono);
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px;
  margin: 16px 0;
}
.fact-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px 14px;
  text-align: center;
}
.fact-card .val {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
}
.fact-card .lbl {
  font-size: 11px;
  color: var(--text-faint);
  margin-top: 4px;
}

.table-wrap { overflow-x: auto; margin: 16px 0; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th {
  background: var(--bg-alt);
  padding: 7px 12px;
  text-align: left;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--text-faint);
  border-bottom: 1px solid var(--border-strong);
  font-family: var(--mono);
}
td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
}
tr:hover td { background: var(--bg-alt); color: var(--text-warm); }
td:first-child { font-family: var(--mono); color: var(--violet); }

.related {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.related-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-faint);
  margin-bottom: 10px;
  font-family: var(--mono);
}
.related-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 4px 10px;
  font-size: 11px;
  font-family: var(--mono);
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color .1s, color .1s;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }

/* ── Statusbar ─────────────────────────────────────── */
#statusbar {
  height: 22px;
  background: var(--bg-dark);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 16px;
  flex-shrink: 0;
}
#statusbar span {
  font-size: 11px;
  color: var(--text-faint);
  font-family: var(--mono);
}
#entry-count { margin-left: auto; }

/* ── No results ────────────────────────────────────── */
#no-results {
  display: none;
  padding: 60px 40px;
  color: var(--text-faint);
  font-size: 13px;
  font-family: var(--mono);
}

/* ── Command Palette ───────────────────────────────── */
@keyframes palette-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

#palette-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 9, 0.55);
  backdrop-filter: blur(3px);
  z-index: 2000;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
}
#palette-overlay.open { display: flex; }

#palette {
  width: 560px;
  max-width: 90%;
  max-height: 70vh;
  background: var(--bg-alt);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: palette-in .12s ease;
}

#palette-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.palette-label {
  font-style: italic;
  font-size: 13px;
  color: var(--text-faint);
  white-space: nowrap;
}
#palette-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  caret-color: var(--accent);
}
#palette-input::placeholder { color: var(--text-faint); }
#palette-count {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-faint);
  white-space: nowrap;
}

#palette-results {
  overflow-y: auto;
  padding: 6px 0;
}
#palette-results::-webkit-scrollbar { width: 3px; }
#palette-results::-webkit-scrollbar-thumb { background: var(--bg-dark); border-radius: 2px; }

.palette-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: 4px;
  margin: 1px 6px;
}
.palette-item:hover { background: var(--bg-muted); }
.palette-item.active {
  background: var(--bg-dark);
  border-color: var(--border-strong);
}
.palette-item-title {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-warm);
  min-width: 90px;
}
.palette-item.active .palette-item-title { color: var(--accent); }
.palette-item-abbr {
  flex: 1;
  font-size: 12px;
  color: var(--text-faint);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.palette-item-badge {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 2px 6px;
  border-radius: 2px;
  flex-shrink: 0;
}