/* ============================================================
   Ultrasonic Frequency Detector — Styles
   ============================================================ */

/* Ultrasonic Gauge */
.ultrasonic-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);
  position: relative;
}

.ultrasonic-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);
}

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

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

.ultrasonic-gauge--alert {
  border-color: #ff4444;
  background: rgba(255, 68, 68, 0.05);
  animation: ultraAlert 0.6s ease-in-out;
}

@keyframes ultraAlert {
  0%, 100% { border-color: #ff4444; }
  50% { border-color: #ff8800; box-shadow: 0 0 30px rgba(255, 68, 68, 0.3); }
}

/* 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__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; }

/* Mic Capability */
.mic-capability {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  background: var(--color-surface);
}

.mic-capability__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mic-capability__row:last-of-type { border-bottom: none; }

.mic-capability__label {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.mic-capability__value {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-primary);
  font-weight: 600;
}

.mic-capability__meter {
  margin-top: var(--space-sm);
  position: relative;
  height: 24px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.mic-capability__meter-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), #00ccff);
  border-radius: var(--radius-sm);
  transition: width 0.5s ease;
}

.mic-capability__meter-labels {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 6px;
  font-family: var(--font-mono);
  font-size: 9px;
  color: rgba(255, 255, 255, 0.5);
  pointer-events: none;
}

/* Hearing Test Panel */
.hearing-test-panel {
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  background: rgba(0, 255, 65, 0.03);
  margin-bottom: var(--space-md);
}

.hearing-test-panel__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.hearing-test-panel__header h3 {
  margin: 0;
  color: var(--color-primary);
  font-size: var(--fs-lg);
}

.hearing-test-panel__desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.hearing-test-panel__controls {
  text-align: center;
}

.hearing-test-panel__freq {
  font-family: var(--font-display);
  font-size: clamp(2rem, 8vw, 4rem);
  font-weight: 900;
  color: var(--color-primary);
  text-shadow: 0 0 15px rgba(0, 255, 65, 0.3);
  margin-bottom: var(--space-xs);
}

.hearing-test-panel__progress {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.hearing-test-panel__btns {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

.hearing-test-panel__result {
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: rgba(0, 255, 65, 0.08);
  border-radius: var(--radius-md);
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  color: var(--color-primary);
}

/* Hearing Result Box */
.hearing-result {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  background: var(--color-surface);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  text-align: center;
}

.hearing-result--tested {
  border-color: var(--color-primary);
  color: var(--color-primary);
  font-weight: 600;
}

/* Age Hearing Table */
.age-hearing-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-sm);
}

.age-hearing-table thead th {
  text-align: left;
  padding: 8px 10px;
  font-weight: 600;
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-border);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.age-hearing-table tbody td {
  padding: 8px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--color-text-muted);
}

.age-hearing-table tbody tr:hover {
  background: rgba(0, 255, 65, 0.03);
}

.age-hearing-table tbody tr.age-hearing-table__highlight {
  background: rgba(0, 255, 65, 0.08);
  color: var(--color-primary);
}

.age-hearing-table tbody tr.age-hearing-table__highlight td {
  color: var(--color-primary);
  font-weight: 600;
}

/* Alert Indicator */
.alert-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(255, 68, 68, 0.1);
  border: 1px solid rgba(255, 68, 68, 0.4);
  border-radius: var(--radius-md);
  margin-top: var(--space-sm);
  animation: alertFlash 1s ease-in-out infinite;
}

@keyframes alertFlash {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.alert-indicator__icon { font-size: 1.4rem; }

.alert-indicator__text {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: #ff6666;
  font-weight: 600;
}

/* 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%;
}

/* Toggle Switch */
.toggle {
  width: 44px;
  height: 24px;
  appearance: none;
  -webkit-appearance: none;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  position: relative;
  cursor: pointer;
  outline: none;
  border: 1px solid var(--color-border);
  transition: background 0.2s;
  flex-shrink: 0;
}

.toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: white;
  transition: transform 0.2s;
}

.toggle:checked {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.toggle:checked::after {
  transform: translateX(20px);
}

/* Freeze Badge */
.freeze-badge {
  display: inline-block;
  background: #00bcd4;
  color: #000;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 700;
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.1em;
  animation: freezePulse 1.5s ease-in-out infinite;
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
}

@keyframes freezePulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* 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--dragover {
  border-color: var(--color-primary);
  background: rgba(0, 255, 65, 0.03);
}

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

.file-upload-zone__text {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.file-upload-zone__hint {
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.3);
}

.file-upload-zone__progress {
  margin-top: var(--space-sm);
}

/* Progress Bar */
.progress-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 4px;
}

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

/* File Result */
#file-result {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  background: var(--color-surface);
  margin-top: var(--space-sm);
  font-size: var(--fs-sm);
  line-height: 1.6;
}

#file-result h4 {
  color: var(--color-primary);
  margin: 0 0 var(--space-xs);
  font-size: var(--fs-md);
}

#file-result .file-result__row {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

#file-result .file-result__label {
  color: var(--color-text-muted);
}

#file-result .file-result__value {
  font-family: var(--font-mono);
  color: var(--color-primary);
  font-weight: 600;
}

/* File Upload Area */
.file-upload-area {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  text-align: center;
  margin-bottom: var(--space-sm);
  transition: border-color 0.2s, background 0.2s;
  cursor: pointer;
}

.file-upload-area--dragover {
  border-color: var(--color-primary);
  background: rgba(0, 255, 65, 0.05);
}

.file-upload-area__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.file-upload-area__icon {
  font-size: 1.6rem;
}

.file-upload-area__text {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

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

.file-upload-area__hint {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  opacity: 0.7;
}

.file-upload-area__progress {
  width: 100%;
  height: 4px;
  background: var(--color-bg);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: var(--space-xs);
}

.file-upload-area__progress-bar {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 0.15s linear;
  box-shadow: 0 0 6px rgba(0, 255, 65, 0.5);
}

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

.file-upload-area__results {
  text-align: left;
}

.file-upload-area__result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.file-upload-area__result-label {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.file-upload-area__result-value {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-primary);
  font-weight: 600;
}

/* Responsive */
@media (max-width: 768px) {
  .ultrasonic-gauge__value { font-size: 4rem; }
  .source-card { flex-direction: column; align-items: center; text-align: center; }
  .hearing-test-panel__btns { flex-direction: column; }
  .hearing-test-panel__freq { font-size: 2.5rem; }
  .mic-capability__meter-labels { font-size: 7px; }
  .age-hearing-table { font-size: 11px; }
  .age-hearing-table thead th,
  .age-hearing-table tbody td { padding: 6px 6px; }
}