/* ============================================================
   Metronome — Styles
   FrequencyDetector.com
   ============================================================ */

/* ── Giant BPM Display ── */
.bpm-hero {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: rgba(0, 255, 65, 0.02);
  transition: border-color 0.15s, box-shadow 0.15s;
  margin-bottom: var(--space-md);
}

.bpm-hero.pulse {
  border-color: var(--color-primary);
  box-shadow: 0 0 40px rgba(0, 255, 65, 0.3), inset 0 0 25px rgba(0, 255, 65, 0.05);
}

.bpm-hero__value {
  font-family: var(--font-display);
  font-size: clamp(5rem, 18vw, 10rem);
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  letter-spacing: -0.02em;
  text-shadow: 0 0 30px rgba(0, 255, 65, 0.5), 0 0 60px rgba(0, 255, 65, 0.2);
}

.bpm-hero__unit {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3em;
  margin-top: var(--space-xs);
}

.bpm-hero__marking {
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  color: var(--color-secondary, #ff00ff);
  margin-top: var(--space-sm);
  letter-spacing: 0.05em;
}

/* ── Beat Indicator Dots ── */
.beat-indicators {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-md);
  min-height: 48px;
  align-items: center;
}

.beat-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  transition: transform 0.08s, background 0.08s, box-shadow 0.08s, border-color 0.08s;
}

.beat-dot--accent {
  border-color: rgba(255, 0, 255, 0.3);
}

.beat-dot.active {
  background: #00ff41;
  border-color: #00ff41;
  transform: scale(1.4);
  box-shadow: 0 0 20px rgba(0, 255, 65, 0.6), 0 0 40px rgba(0, 255, 65, 0.3);
}

.beat-dot.active.beat-dot--accent {
  background: #ff00ff;
  border-color: #ff00ff;
  box-shadow: 0 0 20px rgba(255, 0, 255, 0.6), 0 0 40px rgba(255, 0, 255, 0.3);
}

.beat-dot.active-sub {
  background: rgba(0, 255, 65, 0.3);
  border-color: rgba(0, 255, 65, 0.5);
  transform: scale(1.1);
  box-shadow: 0 0 10px rgba(0, 255, 65, 0.3);
}

/* ── BPM Controls ── */
.bpm-controls {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  justify-content: center;
  margin-bottom: var(--space-sm);
}

.bpm-adj-btn {
  min-width: 48px;
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  font-weight: 700;
}

.bpm-slider {
  flex: 1;
  max-width: 400px;
  height: 8px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  outline: none;
  cursor: pointer;
}

.bpm-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(0, 255, 65, 0.4);
  border: 2px solid var(--color-bg);
}

.bpm-slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(0, 255, 65, 0.4);
  border: 2px solid var(--color-bg);
}

.bpm-input-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.bpm-number-input {
  width: 80px;
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.2s;
}

.bpm-number-input:focus {
  border-color: var(--color-primary);
}

/* ── Start/Stop & Tap Buttons ── */
.main-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.start-stop-btn {
  min-width: 200px;
  font-size: var(--fs-lg);
  padding: var(--space-md) var(--space-xl);
  font-weight: 700;
  letter-spacing: 0.05em;
  transition: all 0.2s;
}

.start-stop-btn.playing {
  background: #ff3c3c;
  border-color: #ff3c3c;
  color: #fff;
  animation: pulse-playing 1s ease infinite;
}

@keyframes pulse-playing {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 60, 60, 0.4); }
  50% { box-shadow: 0 0 20px 4px rgba(255, 60, 60, 0.2); }
}

.tap-btn {
  min-width: 150px;
  font-size: var(--fs-md);
  padding: var(--space-md) var(--space-lg);
  font-weight: 700;
  letter-spacing: 0.05em;
  transition: all 0.15s;
}

.tap-btn.tapped {
  background: rgba(0, 255, 65, 0.15);
  border-color: var(--color-primary);
  transform: scale(0.96);
}

/* ── Controls Grid ── */
.controls-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

/* ── Accent Pattern Editor ── */
.accent-section {
  margin-bottom: var(--space-md);
}

.accent-hint {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  font-weight: 400;
}

.accent-editor {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
  margin-top: var(--space-xs);
}

.accent-beat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  user-select: none;
}

.accent-beat__dot {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  transition: all 0.2s;
}

.accent-beat__dot:hover {
  border-color: var(--color-primary);
}

.accent-beat.accented .accent-beat__dot {
  background: rgba(255, 0, 255, 0.2);
  border-color: #ff00ff;
  color: #ff00ff;
  box-shadow: 0 0 10px rgba(255, 0, 255, 0.3);
}

.accent-beat__label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-muted);
}

/* ── Advanced Sections ── */
.advanced-section {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  overflow: hidden;
}

.advanced-section__title {
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-text);
  cursor: pointer;
  user-select: none;
  transition: background 0.2s;
  list-style: none;
}

.advanced-section__title::-webkit-details-marker {
  display: none;
}

.advanced-section__title::before {
  content: '\25B6';
  display: inline-block;
  margin-right: var(--space-xs);
  font-size: 0.7em;
  transition: transform 0.2s;
}

details[open] > .advanced-section__title::before {
  transform: rotate(90deg);
}

.advanced-section__title:hover {
  background: rgba(0, 255, 65, 0.03);
}

.advanced-section__body {
  padding: var(--space-sm) var(--space-md) var(--space-md);
}

.advanced-section__hint {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

/* ── Ramp Grid ── */
.ramp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-sm);
}

.ramp-status {
  margin-top: var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-secondary, #ff00ff);
}

/* Progress bar (reuse from pattern) */
.progress-bar {
  height: 6px;
  background: var(--color-surface);
  border-radius: 3px;
  overflow: hidden;
  margin-top: var(--space-xs);
}

.progress-bar__fill {
  height: 100%;
  width: 0%;
  background: var(--color-primary);
  border-radius: 3px;
  transition: width 0.3s;
}

/* ── Timer ── */
.timer-presets {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
  align-items: center;
}

.timer-preset.active {
  background: var(--color-primary) !important;
  color: var(--color-bg) !important;
  border-color: var(--color-primary) !important;
}

.timer-display {
  margin-top: var(--space-md);
  text-align: center;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.timer-display__time {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 900;
  color: var(--color-primary);
  text-shadow: 0 0 15px rgba(0, 255, 65, 0.4);
}

.timer-display__remaining {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

.timer-display__stats {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-top: var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.timer-display__stats strong {
  color: var(--color-primary);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .bpm-hero__value {
    font-size: clamp(4rem, 15vw, 6rem);
  }

  .controls-grid {
    grid-template-columns: 1fr;
  }

  .ramp-grid {
    grid-template-columns: 1fr;
  }

  .main-actions {
    flex-direction: column;
    align-items: center;
  }

  .start-stop-btn,
  .tap-btn {
    width: 100%;
    max-width: 300px;
  }

  .bpm-controls {
    flex-wrap: wrap;
  }

  .bpm-slider {
    max-width: 100%;
    order: 5;
    flex-basis: 100%;
    margin-top: var(--space-xs);
  }

  .beat-dot {
    width: 28px;
    height: 28px;
  }

  .accent-beat__dot {
    width: 32px;
    height: 32px;
  }

  .timer-presets {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .bpm-hero {
    padding: var(--space-lg) var(--space-sm);
  }

  .bpm-adj-btn {
    min-width: 40px;
    padding: var(--space-xs);
    font-size: var(--fs-sm);
  }

  .beat-dot {
    width: 24px;
    height: 24px;
  }

  .accent-beat__dot {
    width: 28px;
    height: 28px;
    font-size: 9px;
  }
}