/* ============================================================
   Peak Frequency Detector — Styles
   FrequencyDetector.com
   ============================================================ */

/* Giant Peak Display */
.peak-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);
}

.peak-display__value {
  font-family: var(--font-display);
  font-size: clamp(4rem, 14vw, 9rem);
  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);
}

.peak-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);
}

.peak-display__note {
  font-family: var(--font-mono);
  font-size: var(--fs-xl);
  color: var(--color-secondary);
  margin-top: var(--space-xs);
}

.peak-display__band {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-top: 2px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Diagnosis Card */
.diagnosis-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);
  min-height: 80px;
}

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

.diagnosis-card__icon {
  font-size: 1.8rem;
  flex-shrink: 0;
}

.diagnosis-card__title {
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.diagnosis-card__desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Toggle Switch */
.toggle-switch {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  cursor: pointer;
}

.toggle-switch__slider {
  position: relative;
  width: 44px;
  height: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  transition: background 0.2s;
}

.toggle-switch__slider::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  background: var(--color-text-muted);
  border-radius: 50%;
  transition: transform 0.2s, background 0.2s;
}

.toggle-switch input:checked + .toggle-switch__slider {
  background: rgba(0, 255, 65, 0.2);
  border-color: var(--color-primary);
}

.toggle-switch input:checked + .toggle-switch__slider::after {
  transform: translateX(20px);
  background: var(--color-primary);
}

.toggle-switch input { display: none; }

.toggle-switch__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

/* Band Energy Bars */
.band-bars {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  background: var(--color-surface);
}

.band-bar {
  display: grid;
  grid-template-columns: 80px 70px 1fr;
  align-items: center;
  gap: var(--space-xs);
  height: 22px;
}

.band-bar__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text);
  font-weight: 600;
}

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

.band-bar__fill {
  height: 14px;
  background: var(--color-primary);
  border-radius: 2px;
  width: 0%;
  transition: width 0.15s;
  opacity: 0.7;
}

.band-bar.active .band-bar__fill {
  opacity: 1;
  box-shadow: 0 0 8px rgba(0, 255, 65, 0.4);
}

/* 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 */
.freeze-badge {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-warning, #ffaa00);
  background: rgba(255, 170, 0, 0.1);
  border: 1px solid rgba(255, 170, 0, 0.3);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  animation: pulse-badge 1s ease infinite alternate;
}

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

/* 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);
}

/* 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);
}

/* Band Tag */
.band-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  padding: 1px 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* 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);
}

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

/* 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);
}

/* LOG badge on spectrum title */
.badge-log {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  padding: 1px 5px;
  border: 1px solid var(--color-secondary);
  border-radius: var(--radius-full);
  color: var(--color-secondary);
  vertical-align: middle;
  letter-spacing: 0.08em;
}

/* File Upload */
.file-upload-inline {
  margin-bottom: var(--space-sm);
}

.file-upload-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 80px;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  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: 1.5rem; margin-bottom: var(--space-xs); }
.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 {
  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);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
}

.progress-bar-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.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;
}

/* Responsive */
@media (max-width: 768px) {
  .peak-display__value {
    font-size: 4rem;
  }

  .band-bar {
    grid-template-columns: 65px 55px 1fr;
  }

  .diagnosis-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

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

  .stats-row {
    grid-template-columns: 1fr;
  }

  .export-actions {
    flex-direction: column;
  }
}