/* ============================================================
   TechDex — core tokens, palettes, shared layout & components
   Direction skins (tty / tui / ide) live in directions.css
   ============================================================ */

:root {
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --fs: 14px;            /* base font size, tweakable */
  --row-h: 1.65;
  --gut: 22px;           /* page gutter */
  --speed: 140ms;
  --ease: cubic-bezier(.2,.7,.3,1);
  color-scheme: dark;
}

/* ---------------- meowsoot · night (warm "soot" charcoal + pink/cyan/lavender) ---------------- */
:root, [data-mode="dark"] {
  color-scheme: dark;
  --bg:        #171616;   /* bg_0  editor background */
  --bg-deep:   #100f0f;   /* bg_deep darkest panel */
  --panel:     #201f1d;   /* bg_1  panel */
  --panel-2:   #282625;   /* bg_2  active line */
  --panel-3:   #353331;   /* bg_3  selection */
  --border:    #34322f;
  --border-2:  #454240;   /* bg_4  border */
  --fg:        #eceae8;
  --fg-soft:   #bdb9b4;   /* fg_mute  comments */
  --muted:     #948e86;   /* fg_faint gutter/punctuation */
  --faint:     #746f66;
  --accent:    #7fe3f2;   /* cyan — keywords/builtins */
  --accent-2:  #f7a6d3;   /* pink — functions/headings */
  --accent-ink:#15110f;
  --accent-glow: color-mix(in oklch, var(--accent) 42%, transparent);
  --good:      #9fd8a8;
  --selbg:     #353331;
  --scan:      oklch(0.92 0.02 70 / 0.022);
  --shadow:    0 22px 60px -24px rgba(0,0,0,0.82);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--mono);
  font-size: var(--fs);
  line-height: var(--row-h);
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "calt" 1, "liga" 1;
  transition: background var(--speed) var(--ease), color var(--speed) var(--ease);
}
a { color: inherit; }
::selection { background: var(--accent); color: var(--accent-ink); }

/* faint scanline texture across the whole shell */
.app::before {
  content: "";
  position: fixed; inset: 0; z-index: 9999; pointer-events: none;
  background: repeating-linear-gradient(0deg, transparent 0 3px, var(--scan) 3px 4px);
  mix-blend-mode: normal;
}

/* ===================== SHELL GRID ===================== */
.app {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  background: var(--bg);
}
.body {
  display: grid;
  grid-template-columns: 250px 1fr;
  min-height: 0;
  align-items: stretch;
}

/* ===================== TOPBAR ===================== */
.topbar {
  display: flex; align-items: center; gap: 18px;
  padding: 13px var(--gut);
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  position: sticky; top: 0; z-index: 40;
}
.brand { display: flex; align-items: center; gap: 9px; flex-shrink: 0; user-select: none; }
.brand-icon { width: 28px; height: 28px; display: block; flex-shrink: 0; }
.brand .bolt { color: var(--accent); font-size: 1.15em; }
.brand .nm { font-weight: 700; letter-spacing: .04em; font-size: 1.3rem; }
.brand .nm b { color: var(--accent); }
.brand .ver { color: var(--faint); font-size: .78em; letter-spacing: .02em; white-space: nowrap; }

.search {
  flex: 1; min-width: 0;
  display: flex; align-items: center; gap: 10px;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 8px 12px;
  transition: border-color var(--speed), box-shadow var(--speed);
}
.search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in oklch, var(--accent) 26%, transparent), 0 0 24px -6px var(--accent-glow); }
.search .prompt { color: var(--accent); font-weight: 700; flex-shrink: 0; }
.search input {
  flex: 1; min-width: 0;
  background: none; border: none; outline: none;
  color: var(--fg); font: inherit; letter-spacing: .01em;
}
.search input::placeholder { color: var(--faint); }
.search .kbd { color: var(--faint); font-size: .8em; border: 1px solid var(--border-2); border-radius: 4px; padding: 1px 6px; flex-shrink: 0; }
.search .clr { color: var(--muted); cursor: pointer; flex-shrink: 0; padding: 0 4px; }
.search .clr:hover { color: var(--accent); }

.topbtns { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.tbtn {
  font: inherit; font-size: .86em;
  color: var(--muted); background: var(--bg-deep);
  border: 1px solid var(--border); border-radius: 6px;
  padding: 6px 10px; cursor: pointer; white-space: nowrap;
  transition: all var(--speed) var(--ease);
}
.tbtn:hover { color: var(--fg); border-color: var(--border-2); }
.tbtn.on { color: var(--accent-ink); background: var(--accent); border-color: var(--accent); }

.segmented { display: flex; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; background: var(--bg-deep); }
.segmented button {
  font: inherit; font-size: .82em; color: var(--muted);
  background: none; border: none; padding: 6px 11px; cursor: pointer;
  transition: all var(--speed) var(--ease); border-right: 1px solid var(--border);
}
.segmented button:last-child { border-right: none; }
.segmented button:hover { color: var(--fg); }
.segmented button.on { color: var(--accent); background: color-mix(in oklch, var(--accent) 14%, transparent); }

/* ===================== SIDEBAR ===================== */
.sidebar {
  border-right: 1px solid var(--border);
  background: var(--panel);
  padding: 14px 0;
  overflow-y: auto;
  height: calc(100vh - 56px - 30px);
  position: sticky; top: 56px;
}
.side-h {
  font-size: .72em; letter-spacing: .18em; text-transform: uppercase;
  color: var(--faint); padding: 6px var(--gut) 8px; user-select: none;
  display: flex; justify-content: space-between; align-items: center;
}
.dom {
  display: flex; align-items: center; gap: 9px;
  padding: 5px var(--gut); cursor: pointer;
  color: var(--fg-soft); position: relative;
  transition: background var(--speed), color var(--speed);
}
.dom:hover { background: var(--panel-2); color: var(--fg); }
.dom.on { color: var(--fg); }
.dom.on::before { content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 3px; background: var(--accent); }
.dom .dot { width: 8px; height: 8px; border-radius: 2px; flex-shrink: 0;
  background: var(--dc);
  box-shadow: 0 0 8px color-mix(in oklch, var(--dc) 55%, transparent); }
.dom .dn { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dom .dc { color: var(--faint); font-size: .85em; font-variant-numeric: tabular-nums; }
.dom.on .dc { color: var(--accent); }

.side-sep { height: 1px; background: var(--border); margin: 12px var(--gut); }
.cat-row { display: flex; flex-wrap: wrap; gap: 6px; padding: 4px var(--gut) 0; }
.chip {
  font-size: .8em; color: var(--muted); cursor: pointer;
  border: 1px solid var(--border); border-radius: 20px; padding: 3px 10px;
  transition: all var(--speed) var(--ease); user-select: none;
}
.chip:hover { color: var(--fg); border-color: var(--border-2); }
.chip.on { color: var(--accent); border-color: var(--accent); background: color-mix(in oklch, var(--accent) 12%, transparent); }

/* ===================== MAIN ===================== */
.main { min-width: 0; padding: 18px var(--gut) 40px; }
.main-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 14px; margin-bottom: 16px; flex-wrap: wrap;
}
.main-title { font-size: 1.05em; font-weight: 700; letter-spacing: .01em; }
.main-title .accent { color: var(--accent); }
.main-sub { color: var(--muted); font-size: .85em; }
.main-sub b { color: var(--fg); font-weight: 700; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 12px; align-items: start; }

/* ---- entry card (compact, hover-expand) ---- */
.card {
  --dc: var(--accent);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 13px 15px;
  cursor: pointer;
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  column-gap: 12px;
  align-items: start;
  transition: border-color var(--speed) var(--ease), transform var(--speed) var(--ease), background var(--speed);
  overflow: hidden;
}
.card:hover { border-color: color-mix(in oklch, var(--dc) 62%, var(--border)); transform: translateY(-2px); box-shadow: 0 14px 34px -18px color-mix(in oklch, var(--dc) 42%, transparent); }
.card::after {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--dc);
  opacity: 0; transition: opacity var(--speed);
}
.card:hover::after { opacity: .9; }

.card .dex {
  font-size: .78em; color: var(--faint); font-variant-numeric: tabular-nums;
  letter-spacing: .02em; padding-top: 3px;
}
.card .cmain { min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.card .nm { font-weight: 700; color: var(--fg); letter-spacing: .01em; white-space: nowrap; }
.card .row1 { display: flex; align-items: baseline; gap: 5px 8px; flex-wrap: wrap; }
.card .nm { line-height: 1.25; }
.card .eli5 { color: var(--fg-soft); font-size: .9em; line-height: 1.5; }
.card .eli5::before { content: "# "; color: var(--dc); }
.card .desc {
  color: var(--muted); font-size: .85em; line-height: 1.5;
  max-height: 0; opacity: 0; overflow: hidden;
  transition: max-height 220ms var(--ease), opacity 180ms var(--ease), margin var(--speed);
}
.card:hover .desc { max-height: 8em; opacity: 1; margin-top: 2px; }
.card .meta { display: flex; align-items: center; gap: 10px; margin-top: 4px; color: var(--faint); font-size: .78em; }
.card .meta .uses { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* domain + category badges */
.badge {
  --dc: var(--accent);
  font-size: .72em; letter-spacing: .06em; font-weight: 700;
  padding: 2px 7px; border-radius: 5px; white-space: nowrap; flex-shrink: 0;
  color: var(--dc);
  background: color-mix(in oklch, var(--dc) 16%, transparent);
  border: 1px solid color-mix(in oklch, var(--dc) 40%, transparent);
}
.cat {
  font-size: .72em; color: var(--muted); letter-spacing: .04em;
  border: 1px solid var(--border); border-radius: 5px; padding: 2px 7px; white-space: nowrap;
}

.empty { color: var(--muted); padding: 60px 0; text-align: center; }
.empty b { color: var(--accent); }

/* ===================== STATUSBAR ===================== */
.statusbar {
  display: flex; align-items: center; gap: 0;
  border-top: 1px solid var(--border);
  background: var(--panel);
  font-size: .8em; color: var(--muted);
  height: 30px;
}
.statusbar .seg { padding: 0 13px; height: 100%; display: flex; align-items: center; gap: 7px; border-right: 1px solid var(--border); }
.statusbar .seg.accent { background: var(--accent); color: var(--accent-ink); font-weight: 700; border-right-color: transparent; }
.statusbar .spacer { flex: 1; }
.statusbar .key { color: var(--faint); }
.statusbar .key b { color: var(--fg-soft); font-weight: 700; }
.statusbar .blink { color: var(--accent); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ===================== DETAIL DRAWER ===================== */
.scrim {
  position: fixed; inset: 0; z-index: 60;
  background: oklch(0.1 0.01 245 / 0.55); backdrop-filter: blur(2px);
  opacity: 0; pointer-events: none; transition: opacity 180ms var(--ease);
}
.scrim.open { opacity: 1; pointer-events: auto; }
.drawer {
  --dc: var(--accent);
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 61;
  width: min(540px, 94vw);
  background: var(--panel);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow);
  transform: translateX(102%);
  transition: transform 240ms var(--ease);
  display: flex; flex-direction: column;
  overflow: hidden;
}
.drawer.open { transform: none; }
.drawer-bar {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 18px; border-bottom: 1px solid var(--border);
  background: var(--panel-2); flex-shrink: 0;
}
.drawer-bar .path { color: var(--muted); font-size: .82em; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.drawer-bar .path .accent { color: var(--dc); }
.drawer-bar .x { cursor: pointer; color: var(--muted); border: 1px solid var(--border); border-radius: 5px; padding: 3px 9px; transition: all var(--speed); }
.drawer-bar .x:hover { color: var(--accent); border-color: var(--accent); }
.drawer-body { overflow-y: auto; padding: 22px 26px 40px; }

.d-dex { color: var(--faint); font-size: .82em; letter-spacing: .04em; font-variant-numeric: tabular-nums; }
.d-name { font-size: 1.7em; font-weight: 700; line-height: 1.15; margin: 4px 0 10px; letter-spacing: -.01em; }
.d-badges { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.d-eli5 {
  border-left: 3px solid var(--dc);
  background: color-mix(in oklch, var(--dc) 9%, transparent);
  padding: 11px 15px; border-radius: 0 7px 7px 0;
  color: var(--fg-soft); font-size: .95em; line-height: 1.55; margin-bottom: 20px;
}
.d-eli5 .lbl { color: var(--dc); font-size: .8em; letter-spacing: .12em; display: block; margin-bottom: 4px; }
.d-sec { margin-bottom: 22px; }
.d-sec > .h { font-size: .74em; letter-spacing: .15em; text-transform: uppercase; color: var(--faint); margin-bottom: 9px; display: flex; align-items: center; gap: 8px; }
.d-sec > .h::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.d-desc { color: var(--fg-soft); line-height: 1.65; font-size: .92em; }
.d-uc { list-style: none; margin: 0; padding: 0; display: grid; gap: 7px; }
.d-uc li { color: var(--fg-soft); font-size: .9em; line-height: 1.5; padding-left: 20px; position: relative; }
.d-uc li::before { content: "▸"; position: absolute; left: 2px; color: var(--dc); }
.d-co { display: flex; flex-wrap: wrap; gap: 7px; }
.d-co span { font-size: .82em; color: var(--fg-soft); background: var(--panel-3); border: 1px solid var(--border); border-radius: 20px; padding: 3px 11px; }
.d-links { display: flex; gap: 10px; margin-top: 6px; }
.d-link {
  flex: 1; text-align: center; text-decoration: none;
  padding: 10px; border-radius: 7px; font-size: .88em; font-weight: 700; letter-spacing: .02em;
  border: 1px solid var(--border); color: var(--fg); transition: all var(--speed) var(--ease);
  display: flex; align-items: center; justify-content: center; gap: 7px;
}
.d-link:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.d-link.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.d-link.primary:hover { color: var(--accent-ink); filter: brightness(1.08); }
.d-link .ar { opacity: .6; }

/* keyboard nav hint when drawer open */
.d-nav { display: flex; justify-content: space-between; gap: 10px; margin-top: 26px; padding-top: 16px; border-top: 1px solid var(--border); }
.d-nav button { font: inherit; font-size: .84em; background: var(--bg-deep); color: var(--muted); border: 1px solid var(--border); border-radius: 6px; padding: 7px 13px; cursor: pointer; transition: all var(--speed); display: flex; gap: 8px; align-items: center; }
.d-nav button:hover { color: var(--accent); border-color: var(--accent); }
.d-nav button:disabled { opacity: .35; cursor: default; }
.d-nav button:disabled:hover { color: var(--muted); border-color: var(--border); }

/* responsive */
@media (max-width: 760px) {
  .body { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .topbar { flex-wrap: wrap; }
  .search { order: 3; flex-basis: 100%; }
}