/* pianoroll.css — 24x16 note grid with a piano key strip on the left. */

.pr {
  display: flex;
  gap: 0;
  padding: 8px;
  background: var(--panel-3);
  border: 1px solid #050B10;
  border-radius: 6px;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.5);
  --pr-row-h: 11px;
}

/* Keys strip */
.pr-keys {
  width: 46px;
  flex: none;
  display: flex;
  flex-direction: column;
  border: 1px solid #050B10;
  border-radius: 4px 0 0 4px;
  overflow: hidden;
}
.pr-key {
  flex: none;
  height: var(--pr-row-h);
  background: linear-gradient(180deg, #F6EFE6 0%, #E3D7C8 100%);
  border-bottom: 1px solid rgba(0, 0, 0, 0.35);
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
  position: relative;
}
.pr-key.black {
  position: relative;
  background: linear-gradient(180deg, #2E3A44 0%, #1A242D 100%);
  z-index: 2;
  margin: 0 0 -40% -28%;
  width: 62%;
  border-radius: 0 0 2px 2px;
  box-shadow: 0 2px 3px rgba(0, 0, 0, 0.5);
}
.pr-key.c-label {
  font-size: 8px;
  color: #6B5E52;
  display: flex;
  align-items: flex-end;
  padding: 0 0 2px 3px;
  font-family: var(--mono);
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.4);
}
.pr-key.black.c-label { color: #8A9AA4; }

/* Note grid */
.pr-grid {
  flex: 1;
  display: flex;
  flex-direction: column;
  border: 1px solid #050B10;
  border-left: none;
  border-radius: 0 4px 4px 0;
  overflow: hidden;
}
.pr-row {
  flex: none;
  height: var(--pr-row-h);
  display: flex;
  background: rgba(255, 255, 255, 0.015);
  border-bottom: 1px solid rgba(0, 0, 0, 0.25);
}
.pr-row.black { background: rgba(0, 0, 0, 0.25); }
.pr-row:last-child { border-bottom: none; }

.pr-cell {
  flex: 1;
  border-right: 1px solid rgba(255, 255, 255, 0.04);
  cursor: pointer;
  transition: background 60ms ease;
}
.pr-cell:nth-child(4n) { border-right-color: rgba(255, 255, 255, 0.12); }
.pr-cell:hover { background: rgba(165, 111, 99, 0.15); }

.pr-cell.active {
  background: var(--track-3, #C4876B);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.pr-cell.tail {
  background: var(--track-3, #C4876B);
  opacity: 0.4;
}
.pr-cell.playing {
  box-shadow: 0 0 0 2px var(--accent-bright), inset 0 0 8px rgba(217, 155, 127, 0.4);
}