/* ============================================================
   Beat Detection Tool — Styles
   FrequencyDetector.com
   ============================================================ */

/* Input Mode Tabs */
.input-tabs {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: var(--space-xs);
}

.input-tab {
  background: none;
  border: 1px solid transparent;
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.input-tab:hover {
  color: var(--color-text);
  background: rgba(0, 255, 65, 0.05);
}

.input-tab--active {
  color: var(--color-primary);
  border-color: var(--color-primary);
  border-bottom-color: var(--color-bg);
  background: rgba(0, 255, 65, 0.08);
}

/* BPM Display */
.bpm-display-wrap {
  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;
}

.bpm-display-wrap.pulse {
  border-color: var(--color-primary);
  box-shadow: 0 0 30px rgba(0, 255, 65, 0.3), inset 0 0 20px rgba(0, 255, 65, 0.05);
}

.bpm-display__value {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 8rem);
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  letter-spacing: -0.02em;
  text-shadow: 0 0 20px rgba(0, 255, 65, 0.4);
}

.bpm-display__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-display__confidence {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
}

.bpm-display__confidence.high { color: var(--color-primary); }
.bpm-display__confidence.medium { color: var(--color-warning, #ffaa00); }
.bpm-display__confidence.low { color: var(--color-error, #ff4444); }

/* Beat Pulse Ring */
.beat-pulse-ring {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  margin: var(--space-sm) 0;
}

.beat-pulse-ring__dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-border);
  transition: transform 0.08s, background 0.08s, box-shadow 0.08s;
}

.beat-pulse-ring__dot.flash {
  background: var(--color-primary);
  transform: scale(2);
  box-shadow: 0 0 20px rgba(0, 255, 65, 0.6);
}

/* Result Box Large */
.result-box--large {
  font-size: var(--fs-xl);
  font-weight: 700;
  text-align: center;
  padding: var(--space-sm) var(--space-md);
}

/* Tap Area */
.tap-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  border: 3px dashed var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  user-select: none;
  transition: border-color 0.15s, background 0.15s;
}

.tap-area:hover,
.tap-area:focus-visible {
  border-color: var(--color-primary);
  background: rgba(0, 255, 65, 0.03);
}

.tap-area:active,
.tap-area.tapped {
  border-color: var(--color-primary);
  background: rgba(0, 255, 65, 0.1);
}

.tap-area__label {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: 0.15em;
}

.tap-area__sublabel {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

.tap-area__sublabel kbd {
  font-family: var(--font-mono);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 3px;
  padding: 1px 6px;
  font-size: 0.85em;
}

/* File Upload Zone */
.file-upload-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 160px;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: border-color 0.2s, background 0.2s;
  cursor: pointer;
}

.file-upload-zone:hover,
.file-upload-zone.dragover {
  border-color: var(--color-primary);
  background: rgba(0, 255, 65, 0.03);
}

.file-upload-zone__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-sm);
}

.file-upload-zone__link {
  color: var(--color-primary);
  cursor: pointer;
  text-decoration: underline;
}

.file-upload-zone__hint {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* File Info */
.file-info {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-top: var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
}

/* Progress Bar */
.progress-bar-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.progress-bar {
  flex: 1;
  height: 6px;
  background: var(--color-surface);
  border-radius: 3px;
  overflow: hidden;
}

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

/* Genre Match Card */
.genre-match-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  text-align: center;
  background: var(--color-surface);
}

.genre-match-card__name {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--color-primary);
}

.genre-match-card__range {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* Genre Table */
.genre-table-wrap {
  max-height: 320px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

/* Canvas wraps */
.viz-canvas-wrap {
  position: relative;
  width: 100%;
  height: 140px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg);
}

.viz-canvas-wrap canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* Freeze Badge */
.badge-freeze {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-secondary);
  border: 1px solid var(--color-secondary);
  border-radius: var(--radius-full);
  padding: 2px 10px;
  letter-spacing: 0.08em;
  animation: pulse-freeze 1.2s ease infinite alternate;
}
@keyframes pulse-freeze {
  from { opacity: 1; }
  to   { opacity: 0.5; }
}

/* Toggle Switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 20px;
  cursor: pointer;
}
.toggle-switch input { display: none; }
.toggle-switch__track {
  position: absolute;
  inset: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  transition: background 0.2s, border-color 0.2s;
}
.toggle-switch__track::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 14px; height: 14px;
  background: var(--color-text-muted);
  border-radius: 50%;
  transition: transform 0.2s, background 0.2s;
}
.toggle-switch input:checked + .toggle-switch__track {
  background: rgba(0, 255, 65, 0.15);
  border-color: var(--color-primary);
}
.toggle-switch input:checked + .toggle-switch__track::after {
  transform: translateX(20px);
  background: var(--color-primary);
}

/* BPM Multiplier Buttons */
.bpm-multiplier-group {
  display: flex;
  gap: 4px;
}
.btn--xs {
  padding: 2px 8px;
  font-size: 0.65rem;
  font-family: var(--font-mono);
  min-width: 32px;
}
.bpm-mul--active {
  background: var(--color-primary) !important;
  color: var(--color-bg) !important;
  border-color: var(--color-primary) !important;
}

/* Responsive */
@media (max-width: 768px) {
  .input-tabs {
    flex-wrap: wrap;
  }

  .input-tab {
    flex: 1;
    text-align: center;
    font-size: var(--fs-xs);
    padding: var(--space-xs) var(--space-sm);
  }

  .bpm-display__value {
    font-size: 4rem;
  }

  .tap-area {
    min-height: 150px;
  }

  .file-info {
    flex-wrap: wrap;
  }
}