:root {
  --bg: #16181d; --panel: #21242c; --row: #1b1e24; --line: #313640;
  --fg: #e6e8ec; --mut: #8b93a1; --acc: #d9762b; --chg: #e2b341;
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.4 system-ui, sans-serif; background: var(--bg); color: var(--fg); }
header { padding: 16px 20px 8px; }
h1 { margin: 0; font-size: 20px; }
.meta { color: var(--mut); font-size: 12px; margin-top: 4px; }

.codebar { position: sticky; top: 0; z-index: 5; background: var(--panel);
  border-bottom: 1px solid var(--line); padding: 12px 20px; display: flex;
  flex-wrap: wrap; gap: 10px 16px; align-items: center; }
.codebar label { flex: 1 1 420px; display: flex; flex-direction: column; gap: 4px;
  font-size: 11px; color: var(--mut); text-transform: uppercase; letter-spacing: .05em; }
.coderow { display: flex; gap: 8px; }
#code { flex: 1; min-width: 0; font: 15px ui-monospace, monospace; padding: 8px 10px; background: var(--bg);
  border: 1px solid var(--line); border-radius: 6px; color: var(--chg); }
.coderow #copy { flex: none; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
button { background: var(--row); color: var(--fg); border: 1px solid var(--line);
  padding: 8px 12px; border-radius: 6px; cursor: pointer; font-size: 13px; }
button:hover { border-color: var(--acc); }
#copy { background: var(--acc); border-color: var(--acc); color: #fff; }
.summary { color: var(--mut); font-size: 12px; }
.summary #changed { color: var(--chg); font-weight: 600; }

.tabs { display: flex; align-items: center; gap: 4px; padding: 8px 20px 0; border-bottom: 1px solid var(--line); }
.tabs button { background: transparent; border: 1px solid transparent; border-bottom: none;
  border-radius: 7px 7px 0 0; padding: 8px 16px; color: var(--mut); font-size: 14px; font-weight: 600; cursor: pointer; }
.tabs button:hover { color: var(--fg); }
.tabs button.active { color: var(--fg); background: var(--panel); border-color: var(--line); margin-bottom: -1px; }
.tabnote { margin-left: auto; color: var(--mut); font-size: 11px; font-weight: 400; }
.tabpane { margin: 0 20px; background: var(--panel); border: 1px solid var(--line); border-top: none; border-radius: 0 0 8px 8px; }
#tab-settings { background: transparent; border: none; margin: 0; }
.panectrls { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding: 12px 14px; }
.panetitle { font-weight: 600; flex: 1; }
.drawlbl { color: var(--mut); font-size: 12px; }
.drawlbl input { width: 48px; background: var(--bg); color: var(--fg); border: 1px solid var(--line); border-radius: 5px; padding: 4px 6px; }
.hint { color: var(--mut); font-weight: 400; font-size: 12px; }
.leanpref { color: var(--mut); font-weight: 400; font-size: 12px; }
.leanpref select { margin-left: 4px; background: var(--bg); color: var(--fg); border: 1px solid var(--line); border-radius: 5px; padding: 3px 6px; }
#cardgrid { padding: 4px 14px 8px; display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.card { text-align: left; background: var(--row); border: 1px solid var(--line); border-radius: 8px; padding: 10px; cursor: pointer; color: var(--fg); display: flex; flex-direction: column; gap: 6px; }
.card:hover { border-color: var(--mut); }
.card.on { border-color: var(--acc); box-shadow: 0 0 0 1px var(--acc) inset; }
.cardtop { display: flex; align-items: center; gap: 10px; }
.cardart { flex: none; image-rendering: pixelated; background: var(--bg); border-radius: 5px; padding: 3px; }
.cardhead { flex: 1; }
.cardname { font-weight: 600; font-size: 14px; }
.leanbadge { display: inline-block; font-size: 10px; text-transform: uppercase; letter-spacing: .05em; padding: 1px 6px; border-radius: 8px; margin-top: 3px; }
.leanbadge.harder { background: rgba(226,85,59,.2); color: #f0876f; }
.leanbadge.easier { background: rgba(91,191,115,.2); color: #7fd193; }
.carddesc { font-size: 12px; color: var(--mut); }
.cardeff { margin: 0; padding-left: 16px; font-size: 12px; }
.cardeff li { color: var(--mut); }
.cardeff li.req { color: var(--fg); }
#cardwarn { padding: 0 14px 12px; display: grid; gap: 4px; }
.warnsum { font-size: 12px; color: var(--mut); }
.warn { font-size: 12px; padding: 5px 8px; border-radius: 5px; }
.warn.conflict { background: rgba(226,179,65,.12); color: var(--chg); }
.warn.lock { background: rgba(226,85,59,.12); color: #f0876f; }

#tolpanel { margin: 10px 20px; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; }
#tolpanel summary { display: flex; align-items: center; gap: 12px; padding: 10px 14px;
  cursor: pointer; font-weight: 600; }
#tolpanel summary > span:first-child { flex: 1; }
#tolpanel summary button { font-size: 13px; }
button.ghost { background: transparent; color: var(--mut); }
#axes { padding: 4px 14px 14px; display: grid; gap: 10px; }
.axis { display: grid; grid-template-columns: 180px 1fr; align-items: center; gap: 10px; }
.axistitle { font-size: 13px; }
.axiscount { color: var(--mut); font-size: 11px; }
.sliderwrap { display: flex; align-items: center; gap: 10px; min-width: 0; }
.endlo { text-align: right; color: var(--mut); font-size: 12px; flex: none; width: 76px; }
.endhi { color: var(--mut); font-size: 12px; flex: none; width: 76px; }
.bandval { font: 12px ui-monospace, monospace; color: var(--chg); text-align: right; flex: none; width: 60px; }
.dual { position: relative; height: 22px; flex: 1 1 auto; min-width: 90px; }
.dot { position: absolute; top: 50%; width: 9px; height: 9px; border-radius: 50%;
  background: var(--chg); transform: translate(-50%, -50%); z-index: 3; pointer-events: none;
  box-shadow: 0 0 0 2px var(--panel); transition: left .15s ease; }
.dot.outside { background: #e2553b; }
.dual input[type=range] { position: absolute; left: 0; right: 0; width: 100%; margin: 0;
  -webkit-appearance: none; appearance: none; background: transparent; pointer-events: none; }
.dual input[type=range]::-webkit-slider-runnable-track { height: 4px; background: var(--line); border-radius: 3px; }
.dual input[type=range]::-moz-range-track { height: 4px; background: var(--line); border-radius: 3px; }
.dual input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; pointer-events: auto;
  width: 14px; height: 14px; border-radius: 50%; background: var(--acc); margin-top: -5px; cursor: pointer; }
.dual input[type=range]::-moz-range-thumb { pointer-events: auto; width: 14px; height: 14px; border: 0;
  border-radius: 50%; background: var(--acc); cursor: pointer; }

#filterbar { display: flex; gap: 16px; align-items: center; padding: 10px 20px; }
#search { flex: 0 1 320px; padding: 7px 10px; background: var(--panel);
  border: 1px solid var(--line); border-radius: 6px; color: var(--fg); }
.chk { color: var(--mut); font-size: 13px; }

main { padding: 4px 20px 60px; column-width: 460px; column-gap: 20px; }
.cat { break-inside: avoid; background: var(--panel); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 12px 12px; margin-bottom: 16px; display: inline-block; width: 100%; }
.cathead { display: flex; align-items: center; gap: 8px; margin: 4px 2px 10px; }
.cathead h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .08em;
  color: var(--acc); margin: 0; flex: 1; }
.catlock { color: var(--mut); font-size: 12px; cursor: pointer; user-select: none; }
.catlockbox { accent-color: var(--acc); }
.catrand { padding: 3px 8px; font-size: 12px; }
.opt { display: grid; grid-template-columns: 18px 1fr 170px; align-items: center;
  gap: 8px; padding: 4px 4px; border-radius: 5px; }
.opt.changed { background: rgba(226, 179, 65, .08); }
.opt.changed .name { color: var(--chg); }
.opt.locked { opacity: .65; }
.opt.locked select { background: var(--panel); border-style: dashed; }
.opt .name { font-size: 13px; }
.opt select { padding: 5px 6px; background: var(--bg); color: var(--fg);
  border: 1px solid var(--line); border-radius: 5px; font-size: 13px; }
.lock { accent-color: var(--acc); }

dialog { background: var(--panel); color: var(--fg); border: 1px solid var(--line);
  border-radius: 10px; max-width: 720px; width: 90%; }
dialog h3 { margin-top: 0; color: var(--acc); }
dialog code { color: var(--chg); }
#xmlOut { width: 100%; font: 12px ui-monospace, monospace; background: var(--bg);
  color: var(--fg); border: 1px solid var(--line); border-radius: 6px; padding: 8px; }
menu { padding: 0; margin: 10px 0 0; display: flex; justify-content: flex-end; }

/* ---------- mobile ---------- */
@media (max-width: 700px) {
  main { column-width: auto; }                 /* single column of settings */
  .codebar label { flex: 1 1 100%; }
  .tabnote { display: none; }
  .axis { grid-template-columns: 1fr; gap: 4px; }   /* title stacks above the slider */
  .endlo, .endhi { width: 52px; }
  .bandval { width: 46px; }
  .dual { min-width: 70px; }
  .opt { grid-template-columns: 16px 1fr 132px; }   /* keep option rows from overflowing */
}