:root {
  color-scheme: dark;
  --velvet-950: #16070d;
  --velvet-900: #1e0a12;
  --velvet-850: #261019;
  --velvet-800: #2f141f;
  --velvet-700: #46202f;
  --velvet-600: #5e2c40;
  --brass: #c9a45c;
  --brass-hi: #ecd197;
  --bone: #efe6d8;
  --bone-dim: #b9a99a;
  --bone-faint: #8a7a70;
  --patina: #7fb5a8;
  --ok: #9cc58a;
  --miss: #e0866a;

  --c-kick: #d9825b;
  --c-snare: #e8b4a0;
  --c-hats: #b3c27e;
  --c-bass: #9b88d6;
  --c-keys: #c9a45c;
  --c-vibes: #7fb5a8;
  --c-fx: #9a8a80;

  --f-display: 'Big Shoulders Display', 'Oswald', 'Arial Narrow', sans-serif;
  --f-body: 'IBM Plex Sans KR', 'Apple SD Gothic Neo', system-ui, sans-serif;
  --f-mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --gutter: clamp(16px, 4vw, 56px);
  --radius: 6px;
}

* { box-sizing: border-box; }
html { background: var(--velvet-900); }
body {
  margin: 0;
  color: var(--bone);
  font: 400 15px/1.65 var(--f-body);
  background:
    radial-gradient(1200px 500px at 15% -10%, rgba(201, 164, 92, 0.10), transparent 60%),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.012) 0 1px, transparent 1px 3px),
    var(--velvet-900);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
code, pre { font-family: var(--f-mono); font-size: 0.86em; }
code { color: var(--brass-hi); }
b { font-weight: 600; color: var(--brass-hi); }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--brass-hi); outline-offset: 2px; }

/* ------------------------------------------------------------ masthead */
.masthead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px 48px;
  align-items: end;
  padding: 40px var(--gutter) 22px;
}
.masthead h1 {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 900;
  line-height: 0.82;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  display: flex;
  align-items: baseline;
  gap: 0.18em;
  flex-wrap: wrap;
}
.masthead .t1 { font-size: clamp(56px, 10vw, 148px); color: var(--bone); }
.masthead .t2 {
  font-size: clamp(56px, 10vw, 148px);
  color: transparent;
  -webkit-text-stroke: 1.5px var(--brass);
  font-weight: 800;
}
.mast-sub { margin: 18px 0 0; max-width: 60ch; color: var(--bone-dim); }
.mast-meta {
  margin: 0;
  display: grid;
  grid-template-columns: auto auto;
  gap: 4px 18px;
  font-family: var(--f-mono);
  font-size: 12.5px;
  color: var(--bone-dim);
}
.mast-meta dt { color: var(--bone-faint); }
.mast-meta dd { margin: 0; color: var(--bone); text-align: right; }

/* ------------------------------------------------------------ stage */
.stage {
  position: relative;
  margin: 0 var(--gutter);
  padding: 18px 18px 14px;
  border: 1px solid var(--velvet-700);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--velvet-850), var(--velvet-950));
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.03), 0 30px 60px -30px rgba(0,0,0,0.6);
}
.stage-legend {
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-family: var(--f-mono); font-size: 11.5px; color: var(--bone-faint);
  margin-bottom: 8px;
}
.lg-src { color: var(--patina); }
.lg-flip { color: var(--brass); }
.map-wrap { position: relative; }
#map { display: block; width: 100%; height: 360px; cursor: pointer; touch-action: manipulation; }
.map-tip {
  position: absolute; pointer-events: none; z-index: 3;
  padding: 7px 10px; max-width: 280px;
  font-size: 12.5px; line-height: 1.45;
  background: rgba(22, 7, 13, 0.94); border: 1px solid var(--velvet-600); border-radius: 4px;
  color: var(--bone);
}
.map-tip .mono { font-family: var(--f-mono); color: var(--bone-dim); font-size: 11.5px; }

.transport {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--velvet-700);
}
.play {
  width: 56px; height: 56px; border-radius: 50%;
  border: 0; cursor: pointer;
  background: radial-gradient(circle at 35% 30%, var(--brass-hi), var(--brass) 55%, #8f7036);
  box-shadow: 0 6px 18px -6px rgba(201, 164, 92, 0.6), inset 0 -2px 4px rgba(0,0,0,0.25);
  display: grid; place-items: center;
  transition: transform 0.12s ease;
}
.play:active { transform: scale(0.96); }
.play:disabled { filter: grayscale(0.8) brightness(0.6); cursor: wait; }
.play svg { width: 22px; height: 22px; fill: var(--velvet-950); }
.play .i-pause { display: none; }
.play.playing .i-play { display: none; }
.play.playing .i-pause { display: block; }
.clock { font-family: var(--f-mono); font-size: 20px; font-variant-numeric: tabular-nums; }
.clock .sep { color: var(--bone-faint); margin: 0 6px; }
#tDur { color: var(--bone-dim); }
.where { display: flex; flex-direction: column; line-height: 1.2; min-width: 96px; }
.where-sec { font-family: var(--f-display); font-weight: 800; font-size: 22px; text-transform: uppercase; letter-spacing: 0.02em; color: var(--brass-hi); }
.where-bar { font-family: var(--f-mono); font-size: 11.5px; color: var(--bone-faint); }

.ab, .audition { display: inline-flex; border: 1px solid var(--velvet-600); border-radius: 999px; padding: 3px; gap: 2px; }
.seg {
  border: 0; background: transparent; cursor: pointer;
  padding: 6px 14px; border-radius: 999px; font-size: 13px; color: var(--bone-dim);
}
.seg:hover { color: var(--bone); }
.seg.on { background: var(--bone); color: var(--velvet-950); font-weight: 600; }
.match { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; color: var(--bone-dim); cursor: pointer; }
.match input { accent-color: var(--brass); width: 16px; height: 16px; }
.spec { margin-left: auto; width: 220px; height: 44px; }
.note { margin: 10px 0 0; min-height: 1.5em; font-size: 12.5px; color: var(--bone-faint); }
.note.flash { color: var(--brass-hi); }

.loader {
  position: absolute; inset: 0; z-index: 5;
  display: grid; place-content: center; gap: 12px; text-align: center;
  background: rgba(22, 7, 13, 0.86); border-radius: var(--radius);
  font-family: var(--f-mono); font-size: 13px; color: var(--bone-dim);
  transition: opacity 0.4s ease;
}
.loader.done { opacity: 0; pointer-events: none; }
.loader-bar { width: min(420px, 70vw); height: 3px; background: var(--velvet-700); border-radius: 2px; overflow: hidden; }
.loader-bar i { display: block; height: 100%; width: 0; background: var(--brass); transition: width 0.2s ease; }
.loader.err p { color: var(--miss); }

/* ------------------------------------------------------------ blocks */
.block { padding: 56px var(--gutter) 0; }
.block-head { display: grid; grid-template-columns: minmax(180px, 280px) minmax(0, 1fr); gap: 8px 40px; margin-bottom: 22px; align-items: baseline; }
.block-head h2, .files h2 {
  margin: 0; font-family: var(--f-display); font-weight: 800; font-size: 34px;
  text-transform: uppercase; letter-spacing: 0.01em; color: var(--bone); line-height: 1;
}
.block-head p { margin: 0; max-width: 72ch; color: var(--bone-dim); }

/* ------------------------------------------------------------ mixer */
.mixer { display: grid; gap: 6px; }
.strip {
  display: grid;
  grid-template-columns: 150px 64px 150px 96px minmax(0, 1fr) 84px;
  align-items: center; gap: 14px;
  padding: 8px 12px;
  background: var(--velvet-850); border: 1px solid var(--velvet-800); border-radius: 4px;
}
.strip.muted { opacity: 0.45; }
.strip-name { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 14px; }
.strip-name i { width: 10px; height: 10px; border-radius: 2px; flex: none; }
.strip-name small { display: block; font-weight: 400; font-size: 11px; color: var(--bone-faint); font-family: var(--f-mono); }
.ms { display: flex; gap: 4px; }
.ms button {
  width: 28px; height: 26px; border-radius: 3px; cursor: pointer;
  border: 1px solid var(--velvet-600); background: var(--velvet-900);
  font-family: var(--f-mono); font-size: 12px; font-weight: 500; color: var(--bone-dim);
}
.ms button.on-m { background: var(--miss); border-color: var(--miss); color: var(--velvet-950); }
.ms button.on-s { background: var(--brass-hi); border-color: var(--brass-hi); color: var(--velvet-950); }
.fader { display: flex; align-items: center; gap: 8px; font-family: var(--f-mono); font-size: 11.5px; color: var(--bone-dim); }
.fader input { width: 100px; accent-color: var(--brass); }
.fader output { width: 40px; text-align: right; font-variant-numeric: tabular-nums; }
.meter { height: 8px; width: 96px; }
.lane { height: 34px; width: 100%; display: block; cursor: pointer; }
.strip-lufs { font-family: var(--f-mono); font-size: 11.5px; color: var(--bone-faint); text-align: right; }
.strip-lufs b { color: var(--bone-dim); font-weight: 500; }

/* ------------------------------------------------------------ bank */
.audition { margin-bottom: 18px; align-items: center; }
.aud-label { font-size: 12px; color: var(--bone-faint); padding: 0 8px 0 10px; }
.bank { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr) minmax(240px, 0.8fr); gap: 22px; align-items: start; }
.bank h3 { margin: 0 0 10px; font-size: 13px; font-weight: 600; color: var(--bone-dim); }
.bank h3 small { font-weight: 400; color: var(--bone-faint); margin-left: 6px; }
.loops { display: grid; gap: 8px; }
.loop {
  text-align: left; cursor: pointer;
  display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 4px 12px; align-items: center;
  padding: 10px 12px; border-radius: 4px;
  background: var(--velvet-850); border: 1px solid var(--velvet-700);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.loop .id { grid-row: span 2; font-family: var(--f-display); font-weight: 900; font-size: 28px; line-height: 1; color: var(--chop, var(--brass)); }
.loop .lab { font-size: 13.5px; font-weight: 500; }
.loop .meta { font-family: var(--f-mono); font-size: 11px; color: var(--bone-faint); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pads { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.pad {
  aspect-ratio: 1 / 1; cursor: pointer;
  display: flex; flex-direction: column; justify-content: space-between; text-align: left;
  padding: 9px; border-radius: 6px;
  background: linear-gradient(180deg, #3a1a27, #2a111b);
  border: 1px solid #52283a;
  box-shadow: inset 0 -3px 0 rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.05);
  transition: background 0.08s ease, box-shadow 0.08s ease, transform 0.06s ease;
}
.pad:active { transform: translateY(1px); }
.pad .pid { font-family: var(--f-mono); font-size: 10.5px; color: var(--bone-faint); }
.pad .ch { font-family: var(--f-display); font-weight: 800; font-size: clamp(15px, 1.6vw, 20px); line-height: 1; letter-spacing: 0.01em; }
.pad .src { font-family: var(--f-mono); font-size: 10px; color: var(--bone-faint); }
.pad.hot, .loop.hot {
  background: linear-gradient(180deg, #e9cf92, #c9a45c);
  border-color: var(--brass-hi);
  box-shadow: 0 0 24px -4px rgba(236, 209, 151, 0.55);
}
.pad.hot .pid, .pad.hot .ch, .pad.hot .src, .loop.hot .lab, .loop.hot .meta, .loop.hot .id { color: var(--velvet-950); }
.pad.sel, .loop.sel { outline: 1px solid var(--bone); outline-offset: 2px; }
.pad-detail {
  min-height: 220px; padding: 14px 16px; border-radius: 4px;
  border: 1px dashed var(--velvet-600); font-size: 13px; color: var(--bone-dim);
}
.pad-detail h4 { margin: 0 0 4px; font-family: var(--f-display); font-weight: 800; font-size: 26px; color: var(--bone); text-transform: none; }
.pad-detail dl { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 3px 12px; margin: 10px 0; font-size: 12.5px; }
.pad-detail dt { color: var(--bone-faint); }
.pad-detail dd { margin: 0; font-family: var(--f-mono); font-size: 12px; color: var(--bone); }
.pad-detail .uses { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.pad-detail .uses button {
  cursor: pointer; border: 1px solid var(--velvet-600); background: transparent; border-radius: 3px;
  font-family: var(--f-mono); font-size: 11px; padding: 2px 6px; color: var(--bone-dim);
}
.pad-detail .uses button:hover { border-color: var(--brass); color: var(--brass-hi); }

/* ------------------------------------------------------------ listen */
.listen { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 10px; }
.listen li {
  padding: 14px 16px; border-radius: 4px; background: var(--velvet-850); border-left: 3px solid var(--brass);
  display: flex; flex-direction: column; gap: 6px;
}
.listen .when { font-family: var(--f-mono); font-size: 12px; color: var(--brass-hi); }
.listen h3 { margin: 0; font-size: 15px; font-weight: 600; }
.listen p { margin: 0; font-size: 13px; color: var(--bone-dim); }
.listen button {
  align-self: flex-start; margin-top: 4px; cursor: pointer;
  border: 1px solid var(--brass); background: transparent; color: var(--brass-hi);
  border-radius: 999px; padding: 4px 12px; font-size: 12.5px;
}
.listen button:hover { background: var(--brass); color: var(--velvet-950); }

/* ------------------------------------------------------------ measurements */
.m-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.card { padding: 16px 18px; border-radius: 4px; background: var(--velvet-850); border: 1px solid var(--velvet-800); min-width: 0; }
.card.wide { grid-column: 1 / -1; }
.card h3 { margin: 0 0 12px; font-size: 14px; font-weight: 600; }
.card h3 small, .sub small { font-weight: 400; color: var(--bone-faint); margin-left: 8px; font-size: 12px; }
.sub { margin: 18px 0 8px; font-size: 13px; font-weight: 600; color: var(--bone-dim); }
.chart svg { display: block; width: 100%; height: auto; }
.chart text { font-family: var(--f-mono); font-size: 10.5px; fill: var(--bone-faint); }
.nums { width: 100%; border-collapse: collapse; margin-top: 12px; font-family: var(--f-mono); font-size: 12px; }
.nums th, .nums td { padding: 5px 8px; text-align: right; border-bottom: 1px solid var(--velvet-700); font-weight: 400; white-space: nowrap; }
.nums th:first-child, .nums td:first-child { text-align: left; }
.nums thead th { color: var(--bone-faint); font-size: 11px; }
.nums td.hl { color: var(--brass-hi); }
.table-scroll { overflow-x: auto; }
.legend { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.legend button {
  cursor: pointer; display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--velvet-600); background: transparent; border-radius: 999px;
  padding: 3px 10px 3px 8px; font-size: 12px; color: var(--bone-dim);
}
.legend button i { width: 9px; height: 9px; border-radius: 50%; }
.legend button.off { opacity: 0.35; }
.kv { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px 14px; font-size: 13px; margin: 0; }
.kv dt { color: var(--bone-dim); }
.kv dd { margin: 0; font-family: var(--f-mono); font-size: 12.5px; text-align: right; }
.kv dd b { font-weight: 500; }
.explain { margin: 12px 0 0; font-size: 12.5px; color: var(--bone-faint); }
.bars2 { display: grid; gap: 8px; margin: 4px 0 12px; }
.bar2 { display: grid; grid-template-columns: 120px minmax(0, 1fr) 70px; gap: 10px; align-items: center; font-size: 12.5px; }
.bar2 .track { height: 10px; background: var(--velvet-900); border-radius: 2px; position: relative; }
.bar2 .track i { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 2px; }
.bar2 span:last-child { font-family: var(--f-mono); font-size: 12px; text-align: right; }
.chroma-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.chroma h4 { margin: 0 0 6px; font-size: 12.5px; font-weight: 500; color: var(--bone-dim); }
.chroma h4 b { font-family: var(--f-mono); font-weight: 500; }
.chordstrip { display: grid; grid-template-columns: repeat(44, minmax(0, 1fr)); gap: 2px; }
.chordstrip div {
  height: 34px; border-radius: 2px; position: relative; cursor: pointer;
  background: var(--velvet-700);
}
.chordstrip div.ok { background: color-mix(in srgb, var(--ok) 55%, var(--velvet-800)); }
.chordstrip div.miss { background: var(--miss); }
.chordstrip div.sec-start::before {
  content: attr(data-sec); position: absolute; top: -16px; left: 0;
  font-family: var(--f-mono); font-size: 9.5px; color: var(--bone-faint); white-space: nowrap;
}
.chordstrip { padding-top: 16px; }
.chord-info { margin: 10px 0 0; font-family: var(--f-mono); font-size: 12px; color: var(--bone-dim); min-height: 1.6em; }

/* ------------------------------------------------------------ chains */
.chains { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 10px; }
.chain { padding: 14px 16px; border-radius: 4px; background: var(--velvet-850); border-top: 3px solid var(--chop, var(--brass)); }
.chain h3 { margin: 0 0 8px; font-size: 14px; font-weight: 600; }
.chain ol { margin: 0; padding-left: 20px; font-size: 12.5px; color: var(--bone-dim); }
.chain li { margin: 2px 0; }
.chain li code { color: var(--bone); font-size: 11.5px; }

/* ------------------------------------------------------------ files */
main { padding-bottom: 80px; }
.files pre {
  margin: 16px 0 0; padding: 16px; overflow-x: auto; border-radius: 4px;
  background: var(--velvet-950); border: 1px solid var(--velvet-800); color: var(--bone-dim); line-height: 1.7;
}

/* ------------------------------------------------------------ responsive */
@media (max-width: 1100px) {
  .bank { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .pad-detail { grid-column: 1 / -1; }
  .strip { grid-template-columns: 104px 64px 140px minmax(0, 1fr) 76px; }
  .strip .meter { display: none; }
}
@media (max-width: 760px) {
  .masthead { grid-template-columns: 1fr; padding-top: 28px; }
  .mast-meta dd { text-align: left; }
  .stage { margin: 0 12px; padding: 12px; }
  #map { height: 300px; }
  .spec { display: none; }
  .block-head { grid-template-columns: 1fr; }
  .bank { grid-template-columns: 1fr; }
  .strip { grid-template-columns: minmax(0, 1fr) auto; gap: 8px 10px; }
  .strip .fader { grid-column: 1 / -1; }
  .strip .fader input { flex: 1; width: auto; }
  .strip .lane { grid-column: 1 / -1; }
  .strip .strip-lufs { display: none; }
  .m-grid, .chroma-pair { grid-template-columns: 1fr; }
  .chordstrip div { height: 26px; }
  .chordstrip div.sec-start::before { display: none; }
  .bar2 { grid-template-columns: 96px minmax(0, 1fr) 60px; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}