/* structure only — every tunable value lives in theme.css */
* { box-sizing: border-box; margin: 0; }
body {
  background: var(--bg);
  color: var(--idle);
  font: var(--font);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--sp-section) var(--sp-page-x) var(--sp-page);
  user-select: none;
  -webkit-user-select: none;
}

#voices {
  display: flex;
  gap: var(--sp-section);
  flex-wrap: wrap;
  justify-content: center;
}
.voice[data-voice="0"] { --accent: var(--voice0); }
.voice[data-voice="1"] { --accent: var(--voice1); }
.voice[data-voice="2"] { --accent: var(--voice2); }
.voice {
  background: var(--panel);
  padding: var(--sp-section);
  width: var(--voice-width);
  display: flex;
  flex-direction: column;
  gap: var(--sp-row);
  transition: box-shadow 0.25s ease-out;
}
.voice.hit { animation: flash 0.25s ease-out; }
@keyframes flash {
  0% { box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 35%, transparent), 0 0 24px color-mix(in srgb, var(--accent) 18%, transparent); }
  100% { box-shadow: none; }
}
.pad {
  background: color-mix(in srgb, var(--accent) 9%, transparent);
  border: none;
  color: var(--accent);
  font: inherit;
  font-weight: 700;
  letter-spacing: var(--tracking-wide);
  padding: var(--sp-block);
  cursor: pointer;
  margin-bottom: var(--sp-block);
  /* keycap: raised bottom edge that depresses on press */
  box-shadow: inset 0 -3px 0 color-mix(in srgb, var(--accent) 28%, transparent);
}
.pad:hover { background: color-mix(in srgb, var(--accent) 13%, transparent); }
.pad:active {
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  box-shadow: inset 0 -1px 0 color-mix(in srgb, var(--accent) 28%, transparent);
  transform: translateY(2px);
  padding-bottom: calc(var(--sp-block) - 2px);
}
.pad .key {
  color: var(--dim);
  font-weight: 400;
  letter-spacing: 0;
  margin-left: var(--gap-inline);
  background: color-mix(in srgb, #000 35%, transparent);
  padding: 1px 8px;
  box-shadow: inset 0 -2px 0 color-mix(in srgb, #000 55%, transparent);
}
.row { display: flex; align-items: center; gap: var(--gap-inline); }
.voice .row.sect { margin-top: var(--sp-block); }
.label { width: var(--label-w); color: var(--dim); flex: none; }
.row .val { width: var(--val-w); text-align: right; color: var(--dim); flex: none; }
.bar {
  flex: 1;
  height: var(--bar-h);
  background: repeating-linear-gradient(90deg, var(--track) 0 var(--seg), transparent var(--seg) var(--seg-period));
  cursor: ew-resize;
  touch-action: none;
  overflow: hidden;
  position: relative;
}
.fill {
  height: 100%;
  background: repeating-linear-gradient(90deg, var(--accent) 0 var(--seg), transparent var(--seg) var(--seg-period));
  pointer-events: none;
}
.range {
  position: absolute;
  top: 0;
  bottom: 0;
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  pointer-events: none;
  display: none;
}
.tick {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  margin-left: -1px;
  opacity: 1;
  pointer-events: none;
  background: var(--tick);
}
.row.rand-on {
  background: color-mix(in srgb, var(--accent) 7%, transparent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 7%, transparent);
}
.row.rand-on .label { color: var(--accent); font-weight: 700; }
.row.rand-on .val { color: var(--accent); }
.scope {
  width: 100%;
  height: var(--scope-h);
  background: var(--inset);
  border: none;
  margin: var(--sp-block) 0;
}
#master {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--sp-row) 32px;
  background: var(--panel);
  padding: var(--sp-section);
  margin-top: var(--sp-section);
  width: min(var(--app-width), 100%);
}
#midi { gap: 14px; }
#presets, #midi {
  display: flex;
  align-items: center;
  gap: var(--sp-row);
  background: var(--panel);
  padding: var(--sp-block) var(--sp-section);
  margin-top: var(--sp-section);
  width: min(var(--app-width), 100%);
  font-size: var(--text-small);
  color: var(--dim);
}
#presets .tag { color: var(--faint); letter-spacing: var(--tracking-wide); margin-right: 6px; }
#presets .slot {
  background: var(--inset);
  border: none;
  color: var(--faint);
  font: inherit;
  width: var(--slot-w);
  padding: 4px 0;
  cursor: pointer;
}
#presets .slot.filled { color: var(--idle); }
#presets .slot.arming {
  /* the hold-to-save progress: charges toward accent over the hold duration */
  background: color-mix(in srgb, var(--accent) 30%, transparent);
  color: var(--accent);
  transition: background 0.6s linear, color 0.6s linear;
}
#presets .slot.active { color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); }
#presets .hint { margin-left: auto; text-align: right; color: var(--faint); }
#presets .hint.accent { color: var(--accent); }
#midi .tag { color: var(--faint); letter-spacing: var(--tracking-wide); }
#midi select {
  background: var(--inset);
  color: var(--idle);
  border: none;
  font: inherit;
  padding: 4px 8px;
  cursor: pointer;
}
#midi .learn {
  background: color-mix(in srgb, var(--accent) 7%, transparent);
  border: none;
  color: var(--dim);
  font: inherit;
  letter-spacing: var(--tracking);
  padding: 4px 14px;
  cursor: pointer;
}
#midi .learn:hover { color: var(--idle); }
#midi .learn.on { color: var(--accent); background: color-mix(in srgb, var(--accent) 16%, transparent); }
#midi .learn:disabled { opacity: 0.4; cursor: default; }
#midi .status { margin-left: auto; text-align: right; }
#midi .status.accent { color: var(--accent); }
.bar:hover { filter: brightness(1.18); }
.bar.armed { box-shadow: 0 0 0 1px var(--accent); }
#locked {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--accent);
  color: var(--bg);
  font-weight: 700;
  letter-spacing: var(--tracking);
  text-align: center;
  padding: 10px;
  z-index: 30;
  cursor: pointer;
}
#locked[hidden] { display: none; }
footer {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--sp-section);
  flex-wrap: wrap;
  width: min(var(--app-width), 100%);
  color: var(--faint);
  font-size: var(--text-small);
  margin-top: var(--sp-section);
}
footer .brand { color: var(--idle); font-weight: 700; letter-spacing: var(--tracking-wide); }
footer .brand .mark { color: var(--accent); }
footer .brand .sub { color: var(--faint); font-weight: 400; letter-spacing: var(--tracking); }
footer .home { color: var(--faint); text-decoration: none; }
footer .home:hover { color: var(--accent); }
#help-open {
  background: none;
  border: none;
  color: var(--faint);
  font: inherit;
  cursor: pointer;
  padding: 0 2px;
}
#help-open:hover { color: var(--accent); }
#help {
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 25;
}
#help[hidden] { display: none; }
#help .sheet {
  background: var(--panel);
  padding: 24px 28px;
  width: min(560px, calc(100% - 48px));
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 6px 30px color-mix(in srgb, #000 45%, transparent);
}
#help p { color: var(--dim); font-size: var(--text-small); margin: 0 0 14px; line-height: 1.7; }
#help p:last-child { margin-bottom: 0; }
#help .key { color: var(--idle); }