.preview {
  border-radius: var(--r-xl);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.preview-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 28px;
  min-height: 400px;
}

.preview-area canvas {
  max-width: 100% !important;
  height: auto !important;
  display: block;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  opacity: .3;
  pointer-events: none;
}
.empty-state p { font-size: 13px; font-weight: 600; }

.preview-bar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  padding: 12px 16px;
  border-top: 1px solid color-mix(in srgb, var(--text) 8%, transparent);
}

.slider-group {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
}

.lang-slider,
.theme-slider {
  position: relative;
  width: 68px;
  height: 26px;
  border-radius: 99px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 9px;
  flex-shrink: 0;
}

.lang-thumb,
.theme-thumb {
  position: absolute;
  width: 30px;
  height: 20px;
  border-radius: 99px;
  left: 3px;
  transition: left 220ms cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.lang-slider[aria-checked="true"] .lang-thumb,
.theme-slider[aria-checked="true"] .theme-thumb {
  left: calc(100% - 33px);
}

.lang-label,
.theme-label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .06em;
  color: var(--muted);
  position: relative;
  z-index: 1;
  pointer-events: none;
  transition: color 220ms;
}

.lang-slider[aria-checked="false"] .lang-fr,
.lang-slider[aria-checked="true"] .lang-en,
.theme-slider[aria-checked="false"] .theme-light,
.theme-slider[aria-checked="true"] .theme-dark {
  color: var(--accent);
}

.lang-slider:focus-visible,
.theme-slider:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.theme-icon {
  width: 11px;
  height: 11px;
  display: block;
}

.act-btn {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  border-radius: var(--r-sm);
  font-size: 12px;
  font-weight: 700;
  transition: box-shadow var(--t), color var(--t), opacity var(--t);
}
.act-btn:disabled { opacity: .35; cursor: not-allowed; }
.act-btn:not(:disabled):hover  { color: var(--accent); }
.act-btn:not(:disabled):active { box-shadow: inset 2px 2px 4px var(--sd), inset -2px -2px 4px var(--sl) !important; }

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--surf);
  color: #c0392b;
  padding: 10px 20px;
  border-radius: var(--r-md);
  box-shadow: 0 8px 24px color-mix(in srgb, black 18%, transparent);
  font-weight: 600;
  font-size: 13px;
  transition: transform .3s ease;
  z-index: 99;
}
.toast.show { transform: translateX(-50%) translateY(0); }
.toast.toast--success { color: #27ae60; }