/* ============================================================
   CHORD PROGRESSION GENERATOR — tool.css
   ============================================================ */

/* Controls Row */
.cpg-controls {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
}

.cpg-control-group {
  flex: 1;
  min-width: 160px;
}

.cpg-label {
  display: block;
  font-family: var(--font-mono);
  color: var(--color-primary);
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xs);
}

.cpg-select {
  width: 100%;
  font-family: var(--font-mono);
  font-size: var(--fs-md);
}

/* Section Titles */
.cpg-section {
  margin-bottom: var(--space-lg);
}

.cpg-section-title {
  font-family: var(--font-mono);
  color: var(--color-primary);
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--color-border);
}

/* Common Progression Preset Buttons */
.cpg-presets {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.cpg-preset-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: var(--space-sm) var(--space-md);
  background: rgba(0, 255, 65, 0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-mono);
  text-align: left;
  min-width: 180px;
  flex: 1 1 180px;
  max-width: 300px;
}

.cpg-preset-btn:hover {
  background: rgba(0, 255, 65, 0.1);
  border-color: var(--color-primary);
  box-shadow: 0 0 12px rgba(0, 255, 65, 0.15);
}

.cpg-preset-btn.active {
  background: rgba(0, 255, 65, 0.15);
  border-color: var(--color-primary);
  box-shadow: 0 0 16px rgba(0, 255, 65, 0.25);
}

.cpg-preset-numeral {
  font-size: var(--fs-sm);
  color: var(--color-text);
  font-weight: 600;
  line-height: 1.4;
}

.cpg-preset-name {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* Random Row */
.cpg-random-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  padding: var(--space-sm) var(--space-md);
  background: rgba(0, 255, 65, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.cpg-random-row input[type="radio"] {
  accent-color: var(--color-primary);
}

/* Chord Cards */
.cpg-chord-cards {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  min-height: 120px;
  align-items: stretch;
}

.cpg-chord-card {
  flex: 1 1 100px;
  min-width: 90px;
  max-width: 160px;
  background: rgba(0, 255, 65, 0.04);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-sm);
  text-align: center;
  transition: all 0.25s ease;
  cursor: default;
}

.cpg-chord-card.playing {
  background: rgba(0, 255, 65, 0.18);
  border-color: var(--color-primary);
  box-shadow: 0 0 20px rgba(0, 255, 65, 0.35), inset 0 0 12px rgba(0, 255, 65, 0.08);
  transform: translateY(-3px);
}

.cpg-chord-card__numeral {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  text-transform: none;
  margin-bottom: 4px;
}

.cpg-chord-card__name {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 4px;
  text-shadow: 0 0 10px rgba(0, 255, 65, 0.3);
}

.cpg-chord-card__notes {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  word-break: break-all;
}

.cpg-chord-card__nashville {
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  color: var(--color-secondary);
  font-weight: 700;
  display: none;
}

.cpg-chord-card__nashville.visible {
  display: block;
}

/* Empty State */
.cpg-empty-state {
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  font-size: var(--fs-md);
  text-align: center;
  padding: var(--space-xl) 0;
}

/* Playback Controls */
.cpg-playback {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: var(--space-lg);
  padding: var(--space-md);
  background: rgba(0, 255, 65, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.cpg-tempo-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* Guitar Diagrams */
.cpg-guitar-diagrams {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  min-height: 100px;
}

.cpg-guitar-box {
  text-align: center;
  flex: 0 0 auto;
}

.cpg-guitar-box__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-primary);
  margin-bottom: 4px;
  display: block;
}

.cpg-guitar-box canvas {
  display: block;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.3);
}

/* Piano Diagrams */
.cpg-piano-diagrams {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  min-height: 60px;
}

.cpg-piano-box {
  text-align: center;
  flex: 0 0 auto;
}

.cpg-piano-box__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-primary);
  margin-bottom: 4px;
  display: block;
}

.cpg-piano-box canvas {
  display: block;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.3);
}

/* Toggle Row */
.cpg-toggle-row {
  margin-bottom: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: rgba(0, 255, 65, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.cpg-toggle-label {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.cpg-toggle-label input[type="checkbox"] {
  accent-color: var(--color-primary);
  width: 18px;
  height: 18px;
}

/* Export Row */
.cpg-export-row {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-sm);
}

.cpg-export-output {
  width: 100%;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  resize: vertical;
  margin-bottom: var(--space-md);
}

.cpg-export-output:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 8px rgba(0, 255, 65, 0.2);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .cpg-controls {
    flex-direction: column;
  }

  .cpg-control-group {
    min-width: 100%;
  }

  .cpg-preset-btn {
    min-width: 140px;
    max-width: 100%;
  }

  .cpg-chord-cards {
    gap: var(--space-sm);
  }

  .cpg-chord-card {
    min-width: 70px;
    max-width: 120px;
    flex: 1 1 70px;
  }

  .cpg-playback {
    flex-direction: column;
    align-items: stretch;
  }

  .cpg-playback .btn {
    width: 100%;
    text-align: center;
  }

  .cpg-guitar-diagrams,
  .cpg-piano-diagrams {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .cpg-chord-card {
    min-width: 60px;
    padding: var(--space-xs);
  }

  .cpg-chord-card__name {
    font-size: 1rem;
  }

  .cpg-preset-btn {
    flex: 1 1 100%;
  }
}