/* =========================================================================
   Blora Design 2.0 - Checkbox component
   Spec §11.1: Native input + visual box, no JS required
   ========================================================================= */

blora-checkbox {
  display: inline-block;
}

blora-checkbox[data-group] {
  display: block;
}

/* Options are inline-flex; a margin-top stack does not space them. */
blora-checkbox[data-group] [role="group"] {
  display: flex;
  flex-flow: column;
  align-items: flex-start;
  gap: var(--blora-space-3);
}

blora-checkbox[data-group] [role="group"] > * + * {
  margin-top: 0;
}

.blora-checkbox {
  display: inline-flex;
  align-items: center;
  gap: var(--blora-space-2);
  cursor: pointer;
  user-select: none;
  font-size: var(--blora-text-sm);
  color: var(--blora-color-text-emphasis);
}

.blora-checkbox > input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.blora-checkbox__box {
  width: 1.15em;
  height: 1.15em;
  flex: none;
  border: 1.5px solid var(--blora-color-text-subtle);
  border-radius: var(--blora-radius-xs);
  background: var(--blora-color-surface-default);
  display: inline-block;
  transition:
    background-color var(--blora-duration-fast) var(--blora-easing-standard),
    border-color var(--blora-duration-fast) var(--blora-easing-standard);
  position: relative;

  /* Keep box geometry independent of line-height / flex stretch */
  box-sizing: border-box;
  flex-shrink: 0;
}

/*
 * Checkmark geometry
 * -------------------
 * A border-drawn ✓ is an asymmetric L rotated 45°. Grid/flex "center" only
 * centers that element's border-box, not the ink — so the tick reads as
 * bottom-left (and looks different at different font sizes / DPR).
 *
 * Force a single optical center:
 *  - absolute + top/left 50%
 *  - translate(-50%, -60%) lifts ink so the glyph mass sits on the crosshair
 *  - em-based stroke so scale stays consistent with the box
 * Keep the same recipe on .blora-transfer__check.
 */
.blora-checkbox__box::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  box-sizing: border-box;
  width: 0.3em;
  height: 0.52em;
  border: solid var(--blora-color-text-on-accent);
  border-width: 0 0.15em 0.15em 0;
  opacity: 0;
  transform: translate(-50%, -60%) rotate(45deg) scale(0.4);
  transform-origin: center center;
  transition:
    opacity var(--blora-duration-fast) var(--blora-easing-overshoot),
    transform var(--blora-duration-fast) var(--blora-easing-overshoot);
}

.blora-checkbox > input:checked + .blora-checkbox__box {
  background: var(--blora-color-action-primary-default);
  border-color: var(--blora-color-action-primary-default);
}

.blora-checkbox > input:checked + .blora-checkbox__box::after {
  opacity: 1;
  transform: translate(-50%, -60%) rotate(45deg) scale(1);
}

.blora-checkbox > input:focus-visible + .blora-checkbox__box {
  box-shadow: var(--blora-focus-ring-strong);
}

.blora-checkbox > input:disabled + .blora-checkbox__box {
  opacity: 0.4;
}

/* Indeterminate */
.blora-checkbox[data-indeterminate] > input + .blora-checkbox__box {
  background: var(--blora-color-action-primary-default);
  border-color: var(--blora-color-action-primary-default);
}

.blora-checkbox[data-indeterminate] > input + .blora-checkbox__box::after {
  position: absolute;
  top: 50%;
  inset-inline-start: 50%;
  width: 0.44em;
  height: 0.44em;
  border: 0;
  background: var(--blora-color-text-on-accent);
  opacity: 1;
  transform: translate(-50%, -50%);
  border-radius: 1px;
}