/* Chiptune tracker — dense dark editor under Play chrome */

.instrument-body {
  --chip-bg: #0b0d12;
  --chip-panel: #141822;
  --chip-line: rgba(255, 255, 255, 0.1);
  --chip-accent: #5eead4;
  background: var(--chip-bg);
  color: #e2e8f0;
}

.instrument-header {
  background: var(--chip-panel);
  border-bottom: 1px solid var(--chip-line);
}

.instrument-header h1,
.now-playing {
  color: #e2e8f0;
}

.chip-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  align-items: end;
  padding: 0.75rem 1rem;
  background: var(--chip-panel);
  border-bottom: 1px solid var(--chip-line);
}

.chip-toolbar .control {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0;
}

.chip-toolbar label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #94a3b8;
}

.chip-toolbar input[type='number'],
.chip-toolbar input[type='range'],
.chip-toolbar select {
  background: #0f131a;
  border: 1px solid var(--chip-line);
  border-radius: 6px;
  color: #e2e8f0;
  padding: 0.35rem 0.5rem;
  font: inherit;
}

.chip-toolbar select {
  max-width: 11rem;
}

.chip-toolbar .control-actions {
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}

/* Tempo: collapsed BPM chip; vertical slider below on hover/focus */
.control-tempo {
  position: relative;
  align-self: end;
  z-index: 30;
}

.tempo-face {
  appearance: none;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
  min-width: 3.6rem;
  padding: 0.35rem 0.55rem;
  border-radius: 6px;
  border: 1px solid var(--chip-line);
  background: #0f131a;
  color: #e2e8f0;
  font: inherit;
  cursor: pointer;
  text-align: left;
}

.tempo-face:hover,
.control-tempo:focus-within .tempo-face {
  border-color: rgba(94, 234, 212, 0.45);
}

.tempo-caption {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #94a3b8;
}

.tempo-value {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  line-height: 1.1;
}

.tempo-value::after {
  content: ' BPM';
  font-size: 0.65rem;
  font-weight: 500;
  color: #94a3b8;
}

.tempo-flyout {
  position: absolute;
  left: 50%;
  top: calc(100% - 2px);
  bottom: auto;
  z-index: 40;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  width: 2.75rem;
  /* Top padding is an invisible hover bridge so the pointer can reach the slider */
  padding: 0.55rem 0.35rem 0.55rem;
  margin: 0;
  border-radius: 10px;
  border: 1px solid var(--chip-line);
  background: #0f131a;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(-50%) translateY(-4px);
  transition: opacity 0.12s ease, transform 0.12s ease, visibility 0.12s;
}

.tempo-flyout::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: -0.65rem;
  height: 0.65rem;
}

.control-tempo:hover .tempo-flyout,
.control-tempo:focus-within .tempo-flyout {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.tempo-flyout-min,
.tempo-flyout-max {
  font-size: 0.62rem;
  color: #64748b;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.tempo-flyout input[type='range'] {
  writing-mode: vertical-lr;
  direction: rtl;
  appearance: slider-vertical;
  width: 1.35rem;
  height: 6.5rem;
  padding: 0;
  margin: 0;
  background: transparent;
  border: none;
  accent-color: var(--chip-accent);
  cursor: pointer;
}

.tempo-flyout input[type='range']::-webkit-slider-runnable-track {
  width: 0.35rem;
  border-radius: 999px;
  background: #1e293b;
}

.tempo-flyout input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 0.9rem;
  height: 0.9rem;
  margin-left: -0.28rem;
  border-radius: 50%;
  background: var(--chip-accent);
  border: none;
  cursor: grab;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.bars-row {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.bars-row input[type='number'] {
  width: 3.2rem;
  text-align: center;
  background: #0f131a;
  border: 1px solid var(--chip-line);
  border-radius: 6px;
  color: #e2e8f0;
  padding: 0.35rem 0.35rem;
  font: inherit;
}

.bars-step {
  min-width: 2rem;
  padding: 0.35rem 0.45rem;
  justify-content: center;
}

.primary-btn,
.secondary-btn {
  appearance: none;
  border-radius: 8px;
  border: 1px solid var(--chip-line);
  background: #1e293b;
  color: #e2e8f0;
  padding: 0.45rem 0.7rem;
  cursor: pointer;
  font: inherit;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.primary-btn {
  background: #0f766e;
  border-color: #14b8a6;
}

.primary-btn[aria-pressed='true'] {
  background: #b45309;
  border-color: #f59e0b;
}

.secondary-btn:hover:not(:disabled),
.primary-btn:hover {
  filter: brightness(1.08);
}

.secondary-btn:disabled {
  opacity: 0.4;
  cursor: default;
  filter: none;
}

.chip-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 0;
  min-height: calc(100vh - 180px);
}

@media (max-width: 800px) {
  .chip-layout {
    grid-template-columns: 1fr;
  }
}

.chip-sidebar {
  background: var(--chip-panel);
  border-right: 1px solid var(--chip-line);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.chip-sidebar h2 {
  margin: 0;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #94a3b8;
}

.channel-list,
.pattern-tabs {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.pattern-tabs {
  flex-direction: row;
  flex-wrap: wrap;
}

.channel-btn,
.pattern-tab,
.arrange-chip {
  appearance: none;
  border: 1px solid var(--chip-line);
  background: #0f131a;
  color: #cbd5e1;
  border-radius: 8px;
  padding: 0.4rem 0.55rem;
  cursor: pointer;
  font: inherit;
  text-align: left;
}

.channel-btn.is-active,
.pattern-tab.is-active {
  border-color: var(--chip-accent);
  box-shadow: inset 0 0 0 1px rgba(94, 234, 212, 0.35);
  color: #fff;
}

.channel-btn.is-mute {
  opacity: 0.45;
}

.channel-btn.is-solo {
  border-color: #fbbf24;
}

.channel-btn .ch-idx {
  display: inline-block;
  width: 1.2rem;
  color: var(--chip-accent);
  font-family: var(--font-mono, ui-monospace, monospace);
}

.channel-btn .ch-wave {
  margin-left: 0.35rem;
  font-size: 0.82rem;
}

.channel-params {
  display: grid;
  gap: 0.5rem;
}

.channel-params .control {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.channel-params label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #94a3b8;
}

.channel-params input,
.channel-params select {
  background: #0f131a;
  border: 1px solid var(--chip-line);
  border-radius: 6px;
  color: #e2e8f0;
  padding: 0.3rem 0.45rem;
  font: inherit;
}

.channel-params .row {
  display: flex;
  gap: 0.4rem;
}

.channel-params .row button {
  flex: 1;
}

.channel-params button[aria-pressed='true'] {
  background: #334155;
  border-color: #94a3b8;
}

.grid-wrap {
  overflow: auto;
  background: #0b0d12;
  position: relative;
  max-height: calc(100vh - 260px);
}

#grid {
  display: block;
  touch-action: none;
  cursor: crosshair;
}

.arrangement-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  padding: 0.65rem 1rem 1rem;
  background: var(--chip-panel);
  border-top: 1px solid var(--chip-line);
}

.arrangement-bar h2 {
  margin: 0;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #94a3b8;
}

#arrangement {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  flex: 1;
}

.arrange-chip.is-playing {
  border-color: #fbbf24;
  box-shadow: inset 0 0 0 1px rgba(251, 191, 36, 0.35);
}

.arrange-chip:hover {
  border-color: #f87171;
  color: #fecaca;
}

.hint {
  color: #64748b;
  font-size: 0.8rem;
}

@media (prefers-reduced-motion: reduce) {
  .primary-btn,
  .secondary-btn,
  .channel-btn,
  .pattern-tab {
    transition: none;
  }
}