/* ==========================================================================
   Component: Toggle
   ONE unified .toggle component replacing all duplicate toggle patterns.
   Accessible, keyboard-navigable, animated.
   ========================================================================== */

.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

/* Visually hidden native checkbox */
.toggle__input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------------------------------------------------------------------------
   Track
   --------------------------------------------------------------------------- */
.toggle__track {
  position: relative;
  width: 36px;
  height: 20px;
  background-color: var(--bg-overlay);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast);
  flex-shrink: 0;
}

/* ---------------------------------------------------------------------------
   Thumb (knob)
   --------------------------------------------------------------------------- */
.toggle__track::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  background-color: var(--text-secondary);
  border-radius: var(--radius-full);
  transition:
    transform var(--transition-fast),
    background-color var(--transition-fast);
  will-change: transform;
}

/* ---------------------------------------------------------------------------
   Checked state
   --------------------------------------------------------------------------- */
.toggle__input:checked + .toggle__track {
  background-color: var(--accent-muted);
  border-color: var(--accent);
}

.toggle__input:checked + .toggle__track::after {
  transform: translateX(16px);
  background-color: var(--accent);
}

/* ---------------------------------------------------------------------------
   Hover
   --------------------------------------------------------------------------- */
.toggle:hover .toggle__track {
  border-color: var(--text-muted);
}

.toggle:hover .toggle__input:checked + .toggle__track {
  border-color: var(--accent-hover);
}

/* ---------------------------------------------------------------------------
   Focus
   --------------------------------------------------------------------------- */
.toggle__input:focus-visible + .toggle__track {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------------------------------------------------------------------------
   Disabled
   --------------------------------------------------------------------------- */
.toggle__input:disabled + .toggle__track {
  opacity: 0.4;
  cursor: not-allowed;
}

.toggle:has(.toggle__input:disabled) {
  cursor: not-allowed;
}

/* ---------------------------------------------------------------------------
   Label text
   --------------------------------------------------------------------------- */
.toggle__label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1;
  transition: color var(--transition-fast);
}

.toggle__input:checked ~ .toggle__label {
  color: var(--text-primary);
}

/* ---------------------------------------------------------------------------
   Small variant
   --------------------------------------------------------------------------- */
.toggle--sm .toggle__track {
  width: 28px;
  height: 16px;
}

.toggle--sm .toggle__track::after {
  width: 10px;
  height: 10px;
}

.toggle--sm .toggle__input:checked + .toggle__track::after {
  transform: translateX(12px);
}

.toggle--sm .toggle__label {
  font-size: var(--text-xs);
}

/* ---------------------------------------------------------------------------
   Large variant
   --------------------------------------------------------------------------- */
.toggle--lg .toggle__track {
  width: 44px;
  height: 24px;
}

.toggle--lg .toggle__track::after {
  width: 18px;
  height: 18px;
}

.toggle--lg .toggle__input:checked + .toggle__track::after {
  transform: translateX(20px);
}

/* ---------------------------------------------------------------------------
   Status colors (e.g., toggle that represents on/off for danger zones)
   --------------------------------------------------------------------------- */
.toggle--danger .toggle__input:checked + .toggle__track {
  background-color: var(--color-error-bg);
  border-color: var(--color-error);
}

.toggle--danger .toggle__input:checked + .toggle__track::after {
  background-color: var(--color-error);
}

/* ---------------------------------------------------------------------------
   Reduced motion
   --------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .toggle__track,
  .toggle__track::after {
    transition: none;
  }
}