/**
 * Form Validation Styles
 * 
 * Provides visual feedback for form validation states
 * Works with FormValidator.js and ARIA attributes
 */

/* Invalid field styling */
.form-control.is-invalid,
.form-select.is-invalid {
    border-color: var(--bs-form-invalid-border-color, #dc3545);
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.form-control.is-invalid:focus,
.form-select.is-invalid:focus {
    border-color: var(--bs-form-invalid-border-color, #dc3545);
    box-shadow: 0 0 0 0.25rem rgba(220, 53, 69, 0.25);
}

/* Valid field styling (optional, for positive feedback) */
.form-control.is-valid,
.form-select.is-valid {
    border-color: var(--bs-form-valid-border-color, #198754);
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23198754' d='M2.3 6.73.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.form-control.is-valid:focus,
.form-select.is-valid:focus {
    border-color: var(--bs-form-valid-border-color, #198754);
    box-shadow: 0 0 0 0.25rem rgba(25, 135, 84, 0.25);
}

/* Error message styling */
.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: var(--bs-form-invalid-color, #dc3545);
}

.invalid-feedback[style*="display: block"] {
    display: block !important;
}

/* Valid feedback (optional) */
.valid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: var(--bs-form-valid-color, #198754);
}

.valid-feedback[style*="display: block"] {
    display: block !important;
}

/* Ensure error messages are associated with fields */
.form-control[aria-invalid="true"] + .invalid-feedback,
.form-select[aria-invalid="true"] + .invalid-feedback {
    display: block;
}

/* Focus styling for accessibility */
.form-control:focus,
.form-select:focus,
textarea.form-control:focus {
    outline: 2px solid var(--bs-primary, #0d6efd);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .form-control.is-invalid,
    .form-select.is-invalid {
        border-width: 2px;
    }
    
    .invalid-feedback {
        font-weight: 600;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .invalid-feedback {
        color: #ff6b6b;
    }
    
    .valid-feedback {
        color: #51cf66;
    }
}

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

/* Ensure input groups work with validation */
.input-group .form-control.is-invalid,
.input-group .form-select.is-invalid {
    z-index: 3;
}

/* Textarea specific styling */
textarea.form-control.is-invalid {
    background-position: top calc(0.375em + 0.1875rem) right calc(0.375em + 0.1875rem);
}

/* File input styling */
.form-control[type="file"].is-invalid {
    background-image: none;
    padding-right: 0.75rem;
}

/* Required field indicator (optional) */
.form-label.required::after {
    content: " *";
    color: var(--bs-danger, #dc3545);
}

/* Form submit button state when form is invalid */
form:has([aria-invalid="true"]) .btn-primary {
    /* Optional: dim submit button when form has errors */
    /* opacity: 0.65; */
}