:root {
  --bg: #0e1013;
  --bg-grad: radial-gradient(120% 90% at 12% -10%, #1b2027 0%, #0e1013 55%, #0a0b0e 100%);
  --panel: #161a20;
  --panel-2: #1b2029;
  --edge: #262d38;
  --edge-soft: #1f242c;
  --text: #e6e9ee;
  --muted: #8b94a3;
  --faint: #5c6472;
  --accent: #ff9950;
  --accent-dim: #7a4a25;
  --cool: #63e6d2;
  --cool-dim: #21524d;
  --shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 8px 24px rgba(0, 0, 0, 0.35);
  --radius: 12px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg-grad) fixed, var(--bg);
  color: var(--text);
  font: 13px/1.45 ui-sans-serif, -apple-system, "Segoe UI", Inter, Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1, h2 { margin: 0; font-weight: 600; letter-spacing: 0.01em; }

b, .num { font-variant-numeric: tabular-nums; }

.app {
  max-width: 1240px;
  margin: 0 auto;
  padding: 20px 20px 0;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

/* ---------- header ---------- */

.rack {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 18px;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.brand { display: flex; align-items: center; gap: 14px; min-width: 0; }

.logo {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(160deg, var(--accent), #c2632a);
  color: #21150c;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.04em;
  box-shadow: 0 6px 16px rgba(255, 153, 80, 0.22);
}

.titles h1 { font-size: 16px; }
.run-line { margin: 2px 0 0; color: var(--muted); font-size: 11.5px; }

.engine { display: flex; align-items: flex-end; gap: 14px; flex-wrap: wrap; }

.engine-field { display: flex; flex-direction: column; gap: 5px; }
.engine-field > span {
  color: var(--faint);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
}
.engine-field > span b { color: var(--muted); font-weight: 600; letter-spacing: 0; }
.engine-field.wide input[type="range"] { width: 132px; }
.engine-field.tiny input { width: 52px; }

input[type="number"], select {
  background: #0d1015;
  color: var(--text);
  border: 1px solid var(--edge);
  border-radius: 7px;
  padding: 5px 7px;
  font: inherit;
  font-variant-numeric: tabular-nums;
}
input[type="number"] { width: 72px; }
input[type="number"]:focus-visible, select:focus-visible {
  outline: none;
  border-color: var(--accent);
}

/* ---------- range inputs ---------- */

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 18px;
  background: transparent;
  cursor: ew-resize;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 4px;
  border-radius: 3px;
  background: #0b0e12;
  border: 1px solid var(--edge-soft);
}
input[type="range"]::-moz-range-track {
  height: 4px;
  border-radius: 3px;
  background: #0b0e12;
  border: 1px solid var(--edge-soft);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 13px;
  height: 13px;
  margin-top: -5px;
  border-radius: 50%;
  background: linear-gradient(180deg, #f5f7fa, #b9c0cc);
  border: none;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}
input[type="range"]::-moz-range-thumb {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: linear-gradient(180deg, #f5f7fa, #b9c0cc);
  border: none;
}
input[type="range"]:disabled { cursor: default; opacity: 0.45; }
input[type="range"].hot::-webkit-slider-thumb { background: linear-gradient(180deg, #ffd0a8, var(--accent)); }
input[type="range"].hot::-moz-range-thumb { background: var(--accent); }
input[type="range"].cool::-webkit-slider-thumb { background: linear-gradient(180deg, #b9fff2, var(--cool)); }
input[type="range"].cool::-moz-range-thumb { background: var(--cool); }

/* ---------- panels ---------- */

main { display: flex; flex-direction: column; gap: 14px; padding: 14px 0 20px; }

.panel {
  background: linear-gradient(180deg, var(--panel-2) 0%, var(--panel) 60%);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 16px 16px;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--edge-soft);
  margin-bottom: 13px;
}

.panel-title { display: flex; align-items: baseline; gap: 9px; min-width: 0; }
.panel-title h2 { font-size: 12px; text-transform: uppercase; letter-spacing: 0.13em; }
.panel-title .hint {
  color: var(--faint);
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #2b3240;
  align-self: center;
  transition: background 0.18s, box-shadow 0.18s;
}
.panel.active .dot { background: var(--accent); box-shadow: 0 0 10px rgba(255, 153, 80, 0.55); }
.panel:not(.active) .fields, .panel:not(.active) .chips { opacity: 0.82; }

.hero { padding-bottom: 18px; }
.hero .panel-title h2 { font-size: 13px; }

.columns {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 14px;
  align-items: start;
}
.column { display: flex; flex-direction: column; gap: 14px; }

/* ---------- group guidance & CFG interval ---------- */

.guidance { display: flex; align-items: center; gap: 16px; flex: 0 0 auto; }

.weight { display: flex; align-items: center; gap: 9px; flex: 0 0 auto; }
.weight label,
.interval label {
  color: var(--faint);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
}
.weight input[type="range"] { width: 118px; }
.weight .value,
.interval .value {
  min-width: 30px;
  text-align: right;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
}
.hero .weight input[type="range"] { width: 160px; }

.interval { display: flex; align-items: center; gap: 9px; flex: 0 0 auto; }
.interval .value { min-width: 62px; }

.dual {
  position: relative;
  width: 84px;
  height: 20px;
  cursor: pointer;
  touch-action: none;
}
.dual::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 3px;
  transform: translateY(-50%);
  background: var(--edge);
  border-radius: 2px;
}
.dual-fill {
  position: absolute;
  top: 50%;
  height: 3px;
  transform: translateY(-50%);
  background: var(--accent);
  border-radius: 2px;
  pointer-events: none;
}
.dual-handle {
  position: absolute;
  top: 50%;
  width: 12px;
  height: 12px;
  margin-left: -6px;
  transform: translateY(-50%);
  border-radius: 50%;
  background: var(--text);
  border: 2px solid var(--accent);
  cursor: grab;
  touch-action: none;
}
.dual-handle:active { cursor: grabbing; }
.dual-handle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.hero .dual { width: 120px; }

/* ---------- chips ---------- */

.chips { display: flex; flex-wrap: wrap; gap: 7px; }

.chip {
  --chip-accent: var(--accent);
  border: 1px solid var(--edge);
  background: #12161c;
  color: var(--muted);
  border-radius: 999px;
  padding: 5px 12px;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
  transition: color 0.14s, border-color 0.14s, background 0.14s, transform 0.08s;
}
.chip:hover { color: var(--text); border-color: #39424f; }
.chip:active { transform: translateY(1px); }
.chip[aria-pressed="true"] {
  background: color-mix(in srgb, var(--chip-accent) 18%, #12161c);
  border-color: var(--chip-accent);
  color: #fff;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--chip-accent) 40%, transparent) inset;
}
.chip.rare { opacity: 0.42; }
.chip.rare[aria-pressed="true"] { opacity: 1; }

.chips.instruments .chip {
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 10px;
  letter-spacing: 0.01em;
}
.chips.instruments .chip[aria-pressed="true"] {
  background: linear-gradient(180deg, rgba(255, 153, 80, 0.28), rgba(255, 153, 80, 0.12));
}

/* ---------- fields ---------- */

.fields { display: flex; flex-direction: column; gap: 14px; }

.field { display: flex; flex-direction: column; gap: 7px; }
.field-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.field-name {
  color: var(--muted);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.field-tools { display: flex; align-items: center; gap: 8px; }

.sort {
  background: none;
  border: 1px solid var(--edge-soft);
  color: var(--faint);
  border-radius: 6px;
  font: inherit;
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 7px;
  cursor: pointer;
}
.sort:hover { color: var(--text); border-color: var(--edge); }

/* ordinal segmented control */
.segment { display: flex; gap: 0; border: 1px solid var(--edge); border-radius: 8px; overflow: hidden; width: fit-content; }
.segment button {
  background: #12161c;
  border: none;
  border-right: 1px solid var(--edge-soft);
  color: var(--muted);
  font: inherit;
  font-size: 12px;
  padding: 6px 13px;
  cursor: pointer;
}
.segment button:last-child { border-right: none; }
.segment button:hover { color: var(--text); }
.segment button[aria-pressed="true"] {
  background: linear-gradient(180deg, rgba(255, 153, 80, 0.26), rgba(255, 153, 80, 0.1));
  color: #fff;
}

/* numerical rows */
.field.numeric { display: grid; grid-template-columns: 22px 1fr; gap: 4px 10px; align-items: center; }
.field.numeric .switch { grid-row: span 2; }
.field.numeric .field-head { grid-column: 2; }
.field.numeric .slider-row { grid-column: 2; display: flex; align-items: center; gap: 10px; }
.field.numeric .slider-row input[type="range"] { flex: 1; }
.field.numeric .readout {
  min-width: 88px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--cool);
  font-size: 12.5px;
}
.field.numeric .sigma { color: var(--faint); font-size: 10.5px; min-width: 52px; text-align: right; }
.field.numeric:not(.on) .readout { color: var(--faint); }
.field.numeric:not(.on) .field-name { color: var(--faint); }
.field.numeric:not(.on) input[type="range"] { opacity: 0.55; }

.switch {
  position: relative;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 1px solid var(--edge);
  background: #0d1015;
  cursor: pointer;
  padding: 0;
}
.switch::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 3px;
  background: #2b3240;
  transition: background 0.15s, box-shadow 0.15s;
}
.switch[aria-pressed="true"]::after {
  background: var(--cool);
  box-shadow: 0 0 9px rgba(99, 230, 210, 0.6);
}

/* ---------- buttons ---------- */

.btn {
  background: linear-gradient(180deg, #232a34, #1a1f27);
  border: 1px solid var(--edge);
  color: var(--text);
  border-radius: 9px;
  padding: 9px 16px;
  font: inherit;
  font-weight: 550;
  cursor: pointer;
  transition: border-color 0.14s, transform 0.08s, filter 0.14s;
}
.btn:hover { border-color: #3c4756; filter: brightness(1.08); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.45; cursor: default; transform: none; filter: none; }
.btn.ghost { background: none; color: var(--muted); }
.btn.primary {
  background: linear-gradient(180deg, #ffa964, #e07a30);
  border-color: #b4611f;
  color: #1b1006;
  font-weight: 700;
  min-width: 132px;
  letter-spacing: 0.02em;
  box-shadow: 0 6px 18px rgba(255, 153, 80, 0.2);
}
.btn.primary:disabled { box-shadow: none; }
.btn.busy { position: relative; color: transparent; }
.btn.busy::after {
  content: "";
  position: absolute;
  inset: calc(50% - 8px) auto auto calc(50% - 8px);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid rgba(27, 16, 6, 0.35);
  border-top-color: #1b1006;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.icon {
  background: #12161c;
  border: 1px solid var(--edge);
  color: var(--muted);
  border-radius: 8px;
  width: 32px;
  height: 32px;
  font-size: 13px;
  cursor: pointer;
  display: grid;
  place-items: center;
  padding: 0;
  transition: color 0.14s, border-color 0.14s;
}
.icon:hover { color: var(--text); border-color: #3c4756; }
.icon:disabled { opacity: 0.4; cursor: default; }
.icon.big { width: 40px; height: 40px; font-size: 15px; }
.icon.toggle { width: auto; padding: 0 10px; font-size: 10px; letter-spacing: 0.1em; }
.icon.toggle[aria-pressed="true"] { color: var(--accent); border-color: var(--accent-dim); background: rgba(255, 153, 80, 0.1); }

/* ---------- transport ---------- */

.transport {
  position: sticky;
  bottom: 0;
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 13px 16px;
  background: linear-gradient(180deg, rgba(24, 28, 35, 0.96), rgba(14, 16, 19, 0.99));
  backdrop-filter: blur(10px);
  border: 1px solid var(--edge);
  border-bottom: none;
  border-radius: var(--radius) var(--radius) 0 0;
  box-shadow: 0 -12px 30px rgba(0, 0, 0, 0.45);
}

.transport-left { display: flex; align-items: center; gap: 12px; }
.seed-box { display: flex; align-items: flex-end; gap: 6px; }
.seed-box .icon { height: 27px; }
.status { margin: 0; color: var(--faint); font-size: 11px; max-width: 190px; }
.status.error { color: #ff7b72; }

.monitor { flex: 1; display: flex; align-items: center; gap: 16px; min-width: 0; }
#waveform {
  flex: 1;
  min-width: 120px;
  height: 64px;
  border-radius: 9px;
  background: #0a0c10;
  border: 1px solid var(--edge-soft);
}
.playback { display: flex; align-items: flex-end; gap: 12px; }
.playback .engine-field input[type="range"] { width: 96px; }

/* ---------- seed pads ---------- */

.variations .roll-actions { display: flex; align-items: flex-end; gap: 10px; }

.pads { display: grid; grid-template-columns: repeat(auto-fill, minmax(108px, 1fr)); gap: 9px; }
.pads .empty { grid-column: 1 / -1; margin: 0; color: var(--faint); font-size: 11.5px; }

.pad {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 8px 9px 7px;
  background: #12161c;
  border: 1px solid var(--edge);
  border-radius: 10px;
  cursor: pointer;
  text-align: left;
  font: inherit;
  color: var(--muted);
  overflow: hidden;
  transition: border-color 0.14s, color 0.14s, background 0.14s;
}
.pad:hover { border-color: #3c4756; color: var(--text); }
.pad canvas { width: 100%; height: 30px; display: block; }
.pad .seed-label { font-variant-numeric: tabular-nums; font-size: 11px; letter-spacing: 0.02em; }
.pad.playing { border-color: var(--accent); background: rgba(255, 153, 80, 0.1); color: #fff; }
.pad.pending { opacity: 0.5; }
.pad .adopt, .pad .download {
  position: absolute;
  top: 5px;
  width: 20px;
  height: 20px;
  border-radius: 6px;
  border: 1px solid var(--edge);
  background: #0d1015;
  color: var(--faint);
  font-size: 10px;
  display: grid;
  place-items: center;
  opacity: 0;
  transition: opacity 0.14s, color 0.14s;
  cursor: pointer;
  padding: 0;
}
.pad .adopt { right: 5px; }
.pad .download { right: 29px; }
.pad:hover .adopt, .pad:hover .download { opacity: 1; }
.pad .adopt:hover, .pad .download:hover { color: var(--accent); border-color: var(--accent-dim); }

@media (max-width: 900px) {
  .columns { grid-template-columns: 1fr; }
  .transport { flex-wrap: wrap; }
  .monitor { width: 100%; }
}