/**
 * Salt Design System - Checkbox Component
 *
 * Custom checkbox styles that override Bootstrap's default form-check styles
 * Based on Figma Design System specifications
 */

/* ============================================
   Base Checkbox Styles
   ============================================ */

.form-check-input[type="checkbox"] {
  /* Size and Shape */
  width: 1rem;
  height: 1rem;
  border-radius: 3px;

  /* Border and Background */
  border: 1.5px solid var(--color-border-base);
  background-color: var(--color-bg-surface);
  background-size: 0.75rem;
  background-position: center;

  /* Transition for smooth state changes */
  transition: background-color 0.15s ease-in-out,
              border-color 0.15s ease-in-out,
              box-shadow 0.15s ease-in-out;

  /* Cursor */
  cursor: pointer;

  /* Remove default focus outline (we'll add custom one) */
  outline: none;
}

/* ============================================
   Unchecked State (Default)
   ============================================ */

.form-check-input[type="checkbox"]:not(:checked) {
  background-color: var(--color-bg-surface);
  border-color: var(--color-border-base);
}

/* ============================================
   Checked State
   ============================================ */

.form-check-input[type="checkbox"]:checked {
  background-color: var(--color-primary) !important;
  border-color: var(--color-primary) !important;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3e%3cpath fill='none' stroke='%23fff' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='M6 10l3 3l6-6'/%3e%3c/svg%3e") !important;
}

/* ============================================
   Hover States
   ============================================ */

/* Unchecked Hover */
.form-check-input[type="checkbox"]:not(:checked):not(:disabled):hover {
  border-color: var(--color-border-strong);
  background-color: var(--color-bg-surface-subtle);
}

/* Checked Hover */
.form-check-input[type="checkbox"]:checked:not(:disabled):hover {
  background-color: var(--color-primary-hover) !important;
  border-color: var(--color-primary-hover) !important;
}

/* ============================================
   Focus States
   ============================================ */

.form-check-input[type="checkbox"]:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-purple-signal-4);
}

.form-check-input[type="checkbox"]:focus:not(:checked) {
  border-color: var(--color-primary);
  background-color: var(--color-bg-surface);
}

/* ============================================
   Disabled State
   ============================================ */

.form-check-input[type="checkbox"]:disabled {
  background-color: var(--color-bg-surface-muted);
  border-color: var(--color-border-subtle);
  cursor: not-allowed;
  opacity: 0.6;
}

.form-check-input[type="checkbox"]:checked:disabled {
  background-color: var(--color-bg-surface-muted);
  border-color: var(--color-border-subtle);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3e%3cpath fill='none' stroke='%23b9bbc6' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='M6 10l3 3l6-6'/%3e%3c/svg%3e");
}

/* Disabled label styling */
.form-check-input[type="checkbox"]:disabled ~ .form-check-label {
  color: var(--color-text-disabled);
  cursor: not-allowed;
  opacity: 0.6;
}

/* ============================================
   Indeterminate State (Optional)
   ============================================ */

.form-check-input[type="checkbox"]:indeterminate {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3e%3cpath fill='none' stroke='%23fff' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='M6 10h8'/%3e%3c/svg%3e");
}

/* ============================================
   Form Check Container
   ============================================ */

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding-left: 0;
  margin-bottom: 0.5rem;
}

.form-check .form-check-input {
  float: none;
  margin-left: 0;
  margin-top: 0.125rem; /* Align with first line of text */
}

.form-check-label {
  cursor: pointer;
  user-select: none;
  line-height: 1.5;
}

/* ============================================
   Inline Checkboxes
   ============================================ */

.form-check-inline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-right: 1rem;
  margin-bottom: 0.5rem;
}

/* ============================================
   Checkbox Sizes
   ============================================ */

/* Small Checkbox */
.form-check-sm .form-check-input[type="checkbox"] {
  width: 0.875rem;
  height: 0.875rem;
  background-size: 0.625rem;
}

.form-check-sm .form-check-label {
  font-size: 0.875rem;
}

/* Large Checkbox */
.form-check-lg .form-check-input[type="checkbox"] {
  width: 1.25rem;
  height: 1.25rem;
  background-size: 1rem;
}

.form-check-lg .form-check-label {
  font-size: 1.125rem;
}

/* ============================================
   Checkbox with Description
   ============================================ */

.form-check-with-description {
  display: flex;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: 8px;
  transition: background-color 0.15s ease-in-out;
}

.form-check-with-description:hover {
  background-color: var(--color-bg-surface-subtle);
}

.form-check-with-description .form-check-input {
  margin-top: 0.25rem;
}

.form-check-with-description .form-check-content {
  flex: 1;
}

.form-check-with-description .form-check-label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.form-check-with-description .form-check-description {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-subtle);
  line-height: 1.4;
}

/* ============================================
   Checkbox Group
   ============================================ */

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.checkbox-group-label {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text-base);
  margin-bottom: 0.5rem;
  display: block;
}

/* ============================================
   Error State
   ============================================ */

.form-check.is-invalid .form-check-input[type="checkbox"],
.form-check-input[type="checkbox"].is-invalid {
  border-color: var(--color-error);
}

.form-check.is-invalid .form-check-input[type="checkbox"]:focus,
.form-check-input[type="checkbox"].is-invalid:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px var(--color-error-3);
}

.form-check.is-invalid .form-check-label {
  color: var(--color-error);
}

.invalid-feedback {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.875rem;
  color: var(--color-error);
}

/* ============================================
   Switch Override (Keep existing switch styles)
   ============================================ */

/* Ensure switches maintain their existing styling */
.form-check.form-switch .form-check-input {
  /* Keep Bootstrap switch styles intact */
  width: 2em;
  height: 1em;
  border-radius: 2em;
  background-position: left center;
}

.form-check.form-switch .form-check-input:checked {
  background-position: right center;
}

/* ============================================
   Dark Mode Support
   ============================================ */

[data-theme="dark"] .form-check-input[type="checkbox"]:not(:checked) {
  background-color: var(--color-bg-surface);
  border-color: var(--color-border-base);
}

[data-theme="dark"] .form-check-input[type="checkbox"]:not(:checked):hover {
  background-color: var(--color-bg-surface-subtle);
  border-color: var(--color-border-strong);
}

/* ============================================
   Accessibility
   ============================================ */

/* High contrast mode support */
@media (prefers-contrast: high) {
  .form-check-input[type="checkbox"] {
    border-width: 2px;
  }

  .form-check-input[type="checkbox"]:checked {
    border-color: var(--color-primary);
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .form-check-input[type="checkbox"] {
    transition: none;
  }
}

/* Focus visible for keyboard navigation */
.form-check-input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}