/**
 * CSS Niveau 2 — Widget Levels & Fades + Pastilles de Provenance (levels-fades.css)
 * Plafond strict < 180 lignes. Séparation stricte WebKit / Firefox pour input[type="range"].
 */
.levels-fades-widget {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  width: 100%;
  color-scheme: dark;
}

.levels-fades__header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); }
.levels-fades__title-group { display: flex; flex-direction: column; gap: 2px; }

.levels-fades__title {
  font-family: var(--font-family-display);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.levels-fades__subtitle { font-size: var(--font-size-2xs); color: var(--color-text-muted); }
.levels-fades__body { display: flex; flex-direction: column; gap: var(--space-3); }
.levels-fades__body--audio { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--space-3); }
.levels-fades__card, .levels-fades__row {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  background: rgba(15, 23, 42, 0.55);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
}
.levels-fades__row-top, .levels-fades__row-toggle { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); flex-wrap: wrap; }
.levels-fades__label-wrap { display: inline-flex; align-items: center; gap: var(--space-2); }
.levels-fades__label { font-size: var(--font-size-xs); font-weight: 600; color: var(--color-text-primary); }

.levels-fades__val-badge {
  font-family: var(--font-family-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: #60a5fa;
  background: rgba(59, 130, 246, 0.14);
  border: 1px solid rgba(59, 130, 246, 0.3);
  padding: 1px 6px;
  border-radius: var(--radius-sm);
}

.levels-fades__fade-controls {
  display: grid;
  grid-template-columns: 1fr minmax(125px, 150px);
  align-items: center;
  gap: var(--space-2);
}

.levels-fades__select {
  width: 100%;
  background: var(--color-bg-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: var(--font-size-2xs);
  padding: 4px 8px;
  outline: none;
  cursor: pointer;
}

.levels-fades__select:focus-visible { border-color: var(--color-brand-blue); outline: 2px solid var(--color-brand-blue); }
.levels-fades__toggle { width: 16px; height: 16px; accent-color: var(--color-brand-blue); cursor: pointer; }

/* Range Slider cross-browser (WebKit & Firefox séparés) */
.levels-fades__slider {
  --slider-track-size: 6px;
  --slider-thumb-size: 14px;
  --slider-track-color: rgba(255, 255, 255, 0.12);
  --slider-fill-color: var(--color-brand-blue);
  --attr-min: 0;
  --attr-max: 100;
  --control-value: 50;
  --slider-progress: calc((var(--control-value) - var(--attr-min)) / (var(--attr-max) - var(--attr-min)) * 100%);
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 22px;
  margin: 0;
  background: transparent;
  cursor: pointer;
}

.levels-fades__slider::-webkit-slider-runnable-track {
  height: var(--slider-track-size);
  border-radius: 999px;
  background: linear-gradient(to right, var(--slider-fill-color) var(--slider-progress), var(--slider-track-color) var(--slider-progress));
}

.levels-fades__slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: var(--slider-thumb-size);
  height: var(--slider-thumb-size);
  margin-top: calc((var(--slider-track-size) - var(--slider-thumb-size)) / 2);
  border-radius: 50%;
  background: #ffffff;
  border: 2px solid var(--slider-fill-color);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.45);
}

.levels-fades__slider::-moz-range-track { height: var(--slider-track-size); border-radius: 999px; background: var(--slider-track-color); }
.levels-fades__slider::-moz-range-progress { height: var(--slider-track-size); border-radius: 999px; background: var(--slider-fill-color); }

.levels-fades__slider::-moz-range-thumb {
  width: var(--slider-thumb-size);
  height: var(--slider-thumb-size);
  border-radius: 50%;
  background: #ffffff;
  border: 2px solid var(--slider-fill-color);
}

.levels-fades__slider:focus-visible { outline: 2px solid var(--slider-fill-color); outline-offset: 2px; }

/* Composant Provenance, Reset ↺ & Balai 🧹 */
.prov-control { display: inline-flex; align-items: center; gap: 4px; flex-shrink: 0; }

.prov-badge {
  font-family: var(--font-family-mono);
  font-size: 0.62rem;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.04);
  line-height: 1.2;
}

.prov-badge--track, .prov-badge--local { color: #e879f9; background: rgba(217, 38, 248, 0.16); border-color: rgba(217, 38, 248, 0.45); }
.prov-badge--origin-preset { color: #38bdf8; border-color: rgba(56, 189, 248, 0.35); }
.prov-badge--origin-ai { color: #fbbf24; border-color: rgba(251, 191, 36, 0.35); }
.prov-badge--origin-manual { color: #93c5fd; border-color: rgba(147, 197, 253, 0.35); }

.prov-btn {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  color: var(--color-text-secondary);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 1px 5px;
  cursor: pointer;
}

.prov-btn:hover { border-color: var(--color-brand-blue); color: #ffffff; }
.prov-btn.is-default, .prov-btn.is-empty { opacity: 0.55; }
.prov-btn.has-overrides { color: #fbbf24; border-color: rgba(245, 158, 11, 0.45); background: rgba(245, 158, 11, 0.12); opacity: 1; }