/* Checkbox Component Styles - Modern Mobile App Design */
.ui-checkbox-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.ui-checkbox-label {
    display: inline-flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
    position: relative;
    -webkit-tap-highlight-color: transparent;
}

.ui-checkbox-label:has(.ui-checkbox:disabled) {
    cursor: not-allowed;
    opacity: 0.6;
}

/* Hide default checkbox */
.ui-checkbox {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    margin: 0;
    padding: 0;
}

/* Custom checkbox */
.ui-checkbox-custom {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    min-width: 24px;
    min-height: 24px;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    background-color: #ffffff;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
    margin-top: 2px;
}

/* Checkmark icon */
.ui-checkbox-custom::after {
    content: '';
    position: absolute;
    width: 6px;
    height: 10px;
    border: solid #ffffff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0);
    transition: transform 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
}

/* Checked state */
.ui-checkbox:checked + .ui-checkbox-custom {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px var(--color-primary-shadow);
}

.ui-checkbox:checked + .ui-checkbox-custom::after {
    transform: rotate(45deg) scale(1);
    opacity: 1;
}

/* Hover state */
.ui-checkbox-label:hover:not(:has(.ui-checkbox:disabled)) .ui-checkbox-custom {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-primary-light);
}

/* Focus state */
.ui-checkbox:focus-visible + .ui-checkbox-custom {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-color: var(--color-primary);
}

/* Active/pressed state */
.ui-checkbox-label:active:not(:has(.ui-checkbox:disabled)) .ui-checkbox-custom {
    transform: scale(0.95);
}

/* Disabled state */
.ui-checkbox:disabled + .ui-checkbox-custom {
    background-color: var(--color-gray-light);
    border-color: var(--color-border);
    cursor: not-allowed;
    opacity: 0.6;
}

/* Checkbox text */
.ui-checkbox-text {
    display: inline-block;
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    flex: 1;
}

.ui-checkbox-required {
    color: var(--color-danger);
    margin-left: 2px;
}

/* Help text */
.ui-checkbox-help {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: calc(var(--spacing-xs) * 0.5);
    margin-left: calc(24px + var(--spacing-sm));
}

/* Error text */
.ui-checkbox-error {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-danger);
    margin-top: calc(var(--spacing-xs) * 0.5);
    margin-left: calc(24px + var(--spacing-sm));
    font-weight: var(--font-weight-medium);
}

/* Indeterminate state (optional, for tri-state checkboxes) */
.ui-checkbox:indeterminate + .ui-checkbox-custom {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.ui-checkbox:indeterminate + .ui-checkbox-custom::after {
    content: '';
    width: 10px;
    height: 2px;
    border: none;
    background-color: #ffffff;
    transform: scale(1);
    opacity: 1;
    border-radius: 1px;
}