/* ==========================================================================
   Player CSS - Unified MIDI/MP3 Player Styles
   ========================================================================== */

/* Player Container */
.player-container {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

/* Player Type Tabs */
.player-tabs {
  display: flex;
  border-bottom: 1px solid var(--color-border);
}

.player-tab {
  flex: 1;
  padding: var(--spacing-md);
  background: var(--color-bg);
  border: none;
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.player-tab:hover {
  background: var(--color-border);
}

.player-tab.active {
  background: var(--color-bg-card);
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
}

/* Visualizer */
.visualizer {
  background: linear-gradient(180deg, var(--color-bg-dark) 0%, #0f172a 100%);
  height: 120px;
  position: relative;
  overflow: hidden;
}

.visualizer canvas {
  width: 100%;
  height: 100%;
}

.visualizer-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

/* Progress Bar */
.progress-container {
  padding: var(--spacing-md);
  background: var(--color-bg);
}

.progress-bar {
  position: relative;
  height: 8px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  overflow: hidden;
}

.progress-bar:hover {
  height: 12px;
}

.progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 100ms linear;
}

.progress-handle {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 16px;
  height: 16px;
  background: var(--color-primary);
  border: 2px solid var(--color-bg-card);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.progress-bar:hover .progress-handle {
  opacity: 1;
}

/* Loop Markers */
.loop-marker {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-warning);
  cursor: ew-resize;
}

.loop-marker::after {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 6px solid var(--color-warning);
}

.loop-region {
  position: absolute;
  top: 0;
  bottom: 0;
  background: rgba(245, 158, 11, 0.2);
  pointer-events: none;
}

/* Time Display */
.time-display {
  display: flex;
  justify-content: space-between;
  padding: 0 var(--spacing-xs);
  margin-top: var(--spacing-xs);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* Main Controls */
.controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-bg-card);
}

.controls-group {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Play Button */
.btn-play {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-md);
}

.btn-play:hover {
  background: var(--color-primary-hover);
  transform: scale(1.05);
}

.btn-play:active {
  transform: scale(0.95);
}

.btn-play svg {
  width: 24px;
  height: 24px;
}

.btn-play.playing svg.icon-play {
  display: none;
}

.btn-play:not(.playing) svg.icon-pause {
  display: none;
}

/* Control Buttons */
.btn-control {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.btn-control:hover {
  background: var(--color-bg);
  color: var(--color-text);
  border-color: var(--color-border-dark);
}

.btn-control.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-control svg {
  width: 18px;
  height: 18px;
}

/* Tempo Control */
.tempo-control {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg);
  border-radius: var(--radius-md);
}

.tempo-control label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.tempo-control input[type="range"] {
  width: 100px;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
}

.tempo-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.tempo-control input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.tempo-control input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--color-primary);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
}

.tempo-value {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
  min-width: 45px;
  text-align: center;
}

/* Volume Control */
.volume-control {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.volume-control input[type="range"] {
  width: 80px;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
}

.volume-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  background: var(--color-text-muted);
  border-radius: var(--radius-full);
  cursor: pointer;
}

.volume-control input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  background: var(--color-text-muted);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
}

/* Mixer Section */
.mixer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-md);
  background: var(--color-bg);
}

.mixer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.mixer-header h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
}

.mixer-actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* Mixer Tracks */
.mixer-tracks {
  display: flex;
  gap: var(--spacing-md);
  overflow-x: auto;
  padding-bottom: var(--spacing-sm);
}

/* Track Channel */
.track-channel {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 80px;
  padding: var(--spacing-md);
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.track-channel.muted {
  opacity: 0.5;
}

.track-channel.solo {
  border-color: var(--color-warning);
  box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
}

/* Track Name */
.track-name {
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-text);
  text-align: center;
  margin-bottom: var(--spacing-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 70px;
}

/* VU Meter */
.vu-meter {
  width: 8px;
  height: 100px;
  background: var(--color-border);
  border-radius: var(--radius-sm);
  position: relative;
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
}

.vu-meter-fill {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, var(--color-success) 0%, var(--color-warning) 70%, var(--color-error) 100%);
  transition: height 50ms ease-out;
}

/* Volume Slider (Vertical) */
.volume-slider-vertical {
  width: 8px;
  height: 100px;
  writing-mode: vertical-lr;
  direction: rtl;
  background: var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  margin-bottom: var(--spacing-sm);
}

.volume-slider-vertical::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 8px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* Track Controls */
.track-controls {
  display: flex;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.btn-mute,
.btn-solo {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-mute:hover,
.btn-solo:hover {
  border-color: var(--color-border-dark);
}

.btn-mute.active {
  background: var(--color-error);
  color: var(--color-text-inverse);
  border-color: var(--color-error);
}

.btn-solo.active {
  background: var(--color-warning);
  color: var(--color-text-inverse);
  border-color: var(--color-warning);
}

/* Instrument Selector */
.instrument-select {
  width: 100%;
  padding: var(--spacing-xs);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--font-size-xs);
  cursor: pointer;
}

.instrument-select:focus {
  border-color: var(--color-primary);
  outline: none;
}

/* Volume Display */
.volume-display {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-align: center;
}

/* Presets */
.presets-dropdown {
  position: relative;
}

.presets-menu {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 180px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  display: none;
}

.presets-menu.open {
  display: block;
}

.presets-menu button {
  display: block;
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  background: transparent;
  color: var(--color-text);
  font-size: var(--font-size-sm);
  text-align: left;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.presets-menu button:hover {
  background: var(--color-bg);
}

.presets-menu button:first-child {
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.presets-menu button:last-child {
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* Keyboard Shortcuts Help */
.shortcuts-help {
  padding: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.shortcuts-help kbd {
  display: inline-block;
  padding: 2px 6px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
}

/* Loading State */
.player-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl);
  color: var(--color-text-muted);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-md);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Error State */
.player-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl);
  color: var(--color-error);
  text-align: center;
}

.player-error svg {
  width: 48px;
  height: 48px;
  margin-bottom: var(--spacing-md);
}

/* Player Messages */
.player-message {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: center;
  font-size: var(--font-size-sm);
}

.player-message.info {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.player-message.warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-warning);
}

.player-message.error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
}