/* ============================================================
   D4W.XYZ — Top Toolbar
   ============================================================ */

#toolbar {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 16px;
  height: 48px;
  padding: 0 12px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-color);
  overflow-x: auto;
  white-space: nowrap;
}

.toolbar-section {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 6px;
}

.toolbar-label {
  font-size: 11px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.toolbar-logo {
  background: transparent;
  border: none;
  padding: 0 4px;
  color: var(--accent-primary);
  font-family: "Times New Roman", Times, serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
}

.toolbar-logo:hover {
  color: var(--accent-secondary);
}

.toolbar-transport .btn-icon,
.toolbar-history .btn-icon {
  width: 32px;
  height: 32px;
  font-size: 14px;
}

#bpm-input,
#timesig-numerator {
  width: 52px;
}

/* BPM display button: mirrors .timesig-display, click opens #bpm-popover */
.bpm-display {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 32px;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.toolbar-volume .knob {
  width: auto;
  gap: 0;
}

.toolbar-volume .knob-svg {
  width: 28px;
  height: 28px;
}

.toolbar-volume .knob-label {
  display: none;
}

.toolbar-volume .knob-value {
  font-size: 10px;
}

.toolbar-windows {
  gap: 4px;
}

.toolbar-toggle {
  width: 32px;
  height: 32px;
  font-size: 16px;
}

.toolbar-toggle.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: var(--bg-primary);
}

/* PAT/SONG play-mode switch: two stacked options next to the play button. */
.play-mode-switch {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-color);
  border-radius: 3px;
  overflow: hidden;
}

.play-mode-btn {
  background: var(--button-bg);
  color: var(--text-secondary);
  border: none;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 2px 6px;
  line-height: 1.3;
  cursor: pointer;
}

.play-mode-btn:not(:last-child) {
  border-bottom: 1px solid var(--border-color);
}

.play-mode-btn.active {
  background: var(--accent-primary);
  color: var(--bg-primary);
}

.toolbar-actions {
  margin-left: auto;
  gap: 4px;
}

/* Time signature: vertical fraction button + popover editor */
.timesig-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: auto;
  height: 32px;
  padding: 2px 10px;
  gap: 0;
  line-height: 1.1;
  font-size: 12px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.timesig-display span {
  display: block;
  padding: 0 2px;
}

#timesig-display-num {
  border-bottom: 1px solid currentColor;
}

.timesig-popover {
  position: fixed;
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 140px;
  padding: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  box-shadow: var(--shadow);
  z-index: 3000;
}

.timesig-popover input,
.timesig-popover select,
.timesig-popover .btn {
  width: 100%;
}

/* Settings cog / Save (floppy) popovers — anchored top-right */
.settings-popover {
  position: fixed;
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 200px;
  padding: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  box-shadow: var(--shadow);
  z-index: 3000;
}

.settings-popover select,
.settings-popover input,
.settings-popover > .btn {
  width: 100%;
}

.settings-popover-actions,
.save-popover-actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.settings-divider {
  height: 1px;
  margin: 2px 0;
  background: var(--border-color);
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.settings-row select {
  width: auto;
  flex: 0 0 auto;
}

.save-popover-name-row {
  display: flex;
  align-items: stretch;
  gap: 4px;
}

.save-popover-name-row input {
  flex: 1 1 auto;
  min-width: 0;
}

.save-indicator-btn {
  flex: 0 0 auto;
  width: auto;
  height: 100%;
  aspect-ratio: 1 / 1;
  box-sizing: border-box;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  line-height: 1;
  border-radius: 3px;
  border: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  opacity: 0.5;
}

/* Existing project with unsaved changes — yellow. */
.save-indicator-btn.state-unsaved {
  background: #F5C842;
  border-color: #F5C842;
  color: #1a1a1a;
  opacity: 1;
}

/* Brand-new, never-saved project with changes — red. */
.save-indicator-btn.state-new-unsaved {
  background: var(--meter-high);
  border-color: var(--meter-high);
  color: #fff;
  opacity: 1;
  animation: save-indicator-pulse 1s ease-in-out infinite;
}

@keyframes save-indicator-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

/* Projects dialog (Open) */
.projects-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 320px;
  overflow-y: auto;
}

.project-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
}

.project-row.active {
  border-color: var(--border-accent);
  background: var(--bg-tertiary);
}

.project-row-name {
  flex: 1 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
  color: var(--text-primary);
}

.project-row-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 4px;
}