/* ============================================================
   Sub-Bass Frequency Detector — Styles
   ============================================================ */

.subbass-gauge {
  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);
}

.subbass-gauge__value {
  font-family: var(--font-display);
  font-size: clamp(4rem, 14vw, 9rem);
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  text-shadow: 0 0 20px rgba(0, 255, 65, 0.4);
}

.subbass-gauge__unit {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  color: var(--color-text-muted);
  letter-spacing: 0.3em;
}

.subbass-gauge__level {
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  color: var(--color-secondary);
  margin-top: var(--space-xs);
}

/* Perception Bar */
.perception-bar {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2px;
  position: relative;
  height: 40px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.perception-bar__zone {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-bg);
  font-weight: 600;
}

.perception-bar__zone--feel { background: #ff4444; }
.perception-bar__zone--hear { background: #ffaa00; }
.perception-bar__zone--bass { background: var(--color-primary); }

.perception-bar__needle {
  position: absolute;
  top: 0;
  width: 3px;
  height: 100%;
  background: white;
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.8);
  transition: left 0.15s;
  left: 0%;
  display: none;
}

/* Source Card */
.source-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  background: var(--color-surface);
}

.source-card--match {
  border-color: var(--color-primary);
  background: rgba(0, 255, 65, 0.05);
}

.source-card__icon { font-size: 1.8rem; flex-shrink: 0; }
.source-card__content { flex: 1; min-width: 0; }
.source-card__title { font-weight: 600; color: var(--color-primary); margin-bottom: 4px; }
.source-card__desc { font-size: var(--fs-sm); color: var(--color-text-muted); line-height: 1.5; }

/* Health Panel */
.health-panel {
  border: 1px solid rgba(255, 170, 0, 0.3);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  background: rgba(255, 170, 0, 0.05);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Mic Warning */
.mic-warning {
  border: 1px solid rgba(255, 170, 0, 0.4);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  background: rgba(255, 170, 0, 0.05);
  font-size: var(--fs-sm);
  color: var(--color-warning, #ffaa00);
  margin-bottom: var(--space-sm);
}

/* Privacy Callout */
.privacy-callout {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(0, 255, 65, 0.04);
  border: 1px solid rgba(0, 255, 65, 0.15);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.privacy-callout__icon {
  font-size: 1rem;
  flex-shrink: 0;
}

.browser-badges {
  display: flex;
  gap: 6px;
  margin-left: auto;
  flex-wrap: wrap;
}

.browser-badge {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  padding: 2px 7px;
  border: 1px solid rgba(0, 255, 65, 0.3);
  border-radius: var(--radius-full);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

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

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

.control-group__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.control-group__value {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  text-align: right;
}

.control-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

/* Range slider */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 6px rgba(0, 255, 65, 0.5);
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--color-primary);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 6px rgba(0, 255, 65, 0.5);
}

/* Keyboard Shortcuts Hints */
.kbd-hints {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.kbd-hint kbd {
  display: inline-block;
  padding: 1px 6px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-surface);
  color: var(--color-secondary);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  box-shadow: 0 1px 0 var(--color-border);
}

/* Frequency Table */
.freq-table-wrap {
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.freq-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
}

.freq-table thead {
  position: sticky;
  top: 0;
  z-index: 1;
}

.freq-table th {
  background: var(--color-surface);
  color: var(--color-primary);
  padding: var(--space-sm) var(--space-sm);
  text-align: left;
  font-weight: 600;
  text-transform: uppercase;
  font-size: var(--fs-xs);
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-border);
}

.freq-table td {
  padding: var(--space-xs) var(--space-sm);
  border-bottom: 1px solid rgba(15, 61, 30, 0.3);
  color: var(--color-text);
}

.freq-table tr:hover td {
  background: rgba(0, 255, 65, 0.03);
}

/* Session Stats */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

.stat-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  text-align: center;
}

.stat-box__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}

.stat-box__value {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  color: var(--color-primary);
}

/* History Log */
.history-wrap {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-top: var(--space-sm);
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
}

.history-table thead {
  position: sticky;
  top: 0;
  z-index: 1;
}

.history-table th {
  background: var(--color-surface);
  color: var(--color-secondary);
  padding: 6px var(--space-sm);
  text-align: left;
  font-weight: 600;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-border);
}

.history-table td {
  padding: 4px var(--space-sm);
  border-bottom: 1px solid rgba(15, 61, 30, 0.2);
  color: var(--color-text);
}

/* Small button variant */
.btn--sm {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--fs-xs);
}

/* Export Actions */
.export-actions {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

/* Canvas */
.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--tall { height: 200px; }

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

/* File Upload Zone */
.file-upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  background: var(--color-surface);
}

.file-upload-zone:hover,
.file-upload-zone--active {
  border-color: var(--color-primary);
  background: rgba(0, 255, 65, 0.04);
}

.file-upload-zone__icon {
  font-size: 2rem;
  margin-bottom: var(--space-xs);
}

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

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

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

.progress-bar-wrap {
  margin-top: var(--space-xs);
}

.progress-bar {
  height: 8px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 0.2s linear;
}

.progress-bar__text {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* Freeze Badge */
.freeze-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: #00e5ff;
  background: rgba(0, 229, 255, 0.12);
  border: 1px solid rgba(0, 229, 255, 0.4);
  border-radius: var(--radius-full);
  padding: 2px 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: freeze-pulse 1s ease infinite alternate;
  vertical-align: middle;
}

@keyframes freeze-pulse {
  from { opacity: 0.7; }
  to { opacity: 1; }
}

@media (max-width: 768px) {
  .subbass-gauge__value { font-size: 4rem; }
  .source-card { flex-direction: column; align-items: center; text-align: center; }
  .perception-bar__zone { font-size: 9px; }
  .controls-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr; }
  .export-actions { flex-direction: column; }
}