/**
 * Form Validation Styles for ManageMyTrust
 * Version: 1.0.0
 * 
 * This stylesheet provides comprehensive styling for form validation,
 * error messages, success messages, and conditional field display.
 * 
 * Requirements: 7.2, 9.3
 */

/* ============================================
   1. FORM VALIDATION STATES
   ============================================ */

/* Valid form field styling */
.form-control.is-valid,
.form-select.is-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 6.73L.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: #198754;
    box-shadow: 0 0 0 0.25rem rgba(25, 135, 84, 0.25);
}

/* Invalid form field styling */
.form-control.is-invalid,
.form-select.is-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='12 12 24 24'%3e%3ccircle cx='24' cy='24' r='11' fill='none' stroke='%23dc3545' stroke-width='2'/%3e%3cpath fill='%23dc3545' d='M24 17v6m0 4v.01'/%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: #dc3545;
    box-shadow: 0 0 0 0.25rem rgba(220, 53, 69, 0.25);
}

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

/* ============================================
   2. VALIDATION FEEDBACK MESSAGES
   ============================================ */

/* Valid feedback styling */
.valid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: #198754;
}

.form-control.is-valid ~ .valid-feedback,
.form-select.is-valid ~ .valid-feedback {
    display: block;
}

/* Invalid feedback styling */
.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: #dc3545;
}

.form-control.is-invalid ~ .invalid-feedback,
.form-select.is-invalid ~ .invalid-feedback,
.invalid-feedback.d-block {
    display: block;
}

/* Feedback icon styling */
.invalid-feedback::before {
    content: "⚠ ";
    font-weight: bold;
}

.valid-feedback::before {
    content: "✓ ";
    font-weight: bold;
}

/* ============================================
   3. ALERT MESSAGES
   ============================================ */

/* Alert styling for form-level errors */
.alert {
    border-radius: 0.375rem;
    margin-bottom: 1.5rem;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Alert heading styling */
.alert-heading {
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

/* Success alert */
.alert-success {
    background-color: #d1e7dd;
    border-color: #badbcc;
    color: #0f5132;
}

.alert-success .alert-heading {
    color: #0f5132;
}

.alert-success hr {
    border-color: #badbcc;
}

.alert-success .btn-close {
    color: #0f5132;
}

/* Error alert */
.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c2c7;
    color: #842029;
}

.alert-danger .alert-heading {
    color: #842029;
}

.alert-danger hr {
    border-color: #f5c2c7;
}

.alert-danger .btn-close {
    color: #842029;
}

/* Warning alert */
.alert-warning {
    background-color: #fff3cd;
    border-color: #ffecb5;
    color: #664d03;
}

.alert-warning .alert-heading {
    color: #664d03;
}

.alert-warning hr {
    border-color: #ffecb5;
}

.alert-warning .btn-close {
    color: #664d03;
}

/* Info alert */
.alert-info {
    background-color: #cfe2ff;
    border-color: #b6d4fe;
    color: #084298;
}

.alert-info .alert-heading {
    color: #084298;
}

.alert-info hr {
    border-color: #b6d4fe;
}

.alert-info .btn-close {
    color: #084298;
}

/* Alert list styling */
.alert ul {
    margin-bottom: 0;
    padding-left: 1.5rem;
}

.alert ul li {
    margin-bottom: 0.25rem;
}

.alert ul li strong {
    font-weight: 600;
}

/* ============================================
   4. FORM FIELD STYLING
   ============================================ */

/* Form label styling */
.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: #212529;
}

.form-label .text-danger {
    margin-left: 0.25rem;
}

/* Form text (help text) styling */
.form-text {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: #6c757d;
}

/* Dependent field help text styling */
.dependent-field-help {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: #6c757d;
    font-style: italic;
}

/* Form control styling */
.form-control,
.form-select {
    border-radius: 0.375rem;
    border: 1px solid #adb5bd;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus,
.form-select:focus {
    border-color: #86b7fe;
    outline: 0;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

/* Form control disabled state */
.form-control:disabled,
.form-select:disabled {
    background-color: #e9ecef;
    opacity: 1;
    color: #6c757d;
}

/* Input group styling */
.input-group {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
    width: 100%;
}

.input-group > .form-control,
.input-group > .form-select {
    position: relative;
    flex: 1 1 auto;
    width: 1%;
    min-width: 0;
}

.input-group-text {
    display: flex;
    align-items: center;
    padding: 0.375rem 0.75rem;
    margin-bottom: 0;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: #495057;
    text-align: center;
    white-space: nowrap;
    background-color: #e9ecef;
    border: 1px solid #adb5bd;
    border-radius: 0.375rem;
}

/* ============================================
   5. CONDITIONAL FIELD STYLING
   ============================================ */

/* Conditional field styling */
.conditional-field {
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.conditional-field[style*="display: none"] {
    opacity: 0;
    visibility: hidden;
}

/* Conditional required indicator */
.conditional-required {
    color: #dc3545;
    font-weight: bold;
    margin-left: 0.25rem;
}

/* ============================================
   6. FIELDSET STYLING
   ============================================ */

/* Fieldset styling for form sections */
fieldset {
    border: none;
    padding: 0;
    margin: 0;
}

fieldset legend {
    font-size: 1rem;
    font-weight: 600;
    color: #495057;
    border-bottom: 1px solid #dee2e6;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
    width: 100%;
}

/* ============================================
   7. RADIO & CHECKBOX STYLING
   ============================================ */

/* Form check styling */
.form-check {
    padding-left: 0 !important;
    margin-bottom: 0.5rem;
    display: flex !important;
    align-items: center;
    gap: 0.6rem;
}

.form-check-input {
    width: 1.1em;
    height: 1.1em;
    margin: 0;
    flex-shrink: 0;
    cursor: pointer;
    border: 1px solid #adb5bd;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

/* Override Bootstrap's float-based layout */
.form-check .form-check-input,
.form-check-inline .form-check-input {
    float: none !important;
    margin-left: 0 !important;
    margin-top: 0 !important;
}

/* Checkboxes: rounded corners */
input[type="checkbox"].form-check-input {
    border-radius: 0.25em;
}

/* Radio buttons: circular */
input[type="radio"].form-check-input {
    border-radius: 50%;
}

.form-check-input:checked {
    background-color: #0d6efd;
    border-color: #0d6efd;
}

.form-check-input:focus {
    border-color: #86b7fe;
    outline: 0;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.form-check-input:disabled {
    pointer-events: none;
    filter: none;
    opacity: 0.5;
}

.form-check-label {
    margin: 0;
    cursor: pointer;
    user-select: none;
}

/* Inline form check */
.form-check-inline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-right: 1rem;
    margin-bottom: 0;
}

.form-check-inline .form-check-input {
    margin: 0;
}

.form-check-inline .form-check-label {
    margin: 0;
    white-space: nowrap;
}

/* Wrapper for inline radio/checkbox groups */
.form-check-inline-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
    margin: 0;
    padding: 0;
}

/* ============================================
   8. BUTTON STYLING
   ============================================ */

/* Button styling */
.btn {
    display: inline-block;
    font-weight: 500;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    user-select: none;
    border: 1px solid transparent;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: 0.375rem;
    transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.btn:hover {
    text-decoration: none;
}

.btn:focus {
    outline: 0;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.btn:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

/* Button primary */
.btn-primary {
    color: #fff;
    background-color: #0d6efd;
    border-color: #0d6efd;
}

.btn-primary:hover {
    color: #fff;
    background-color: #0b5ed7;
    border-color: #0a58ca;
}

.btn-primary:focus {
    color: #fff;
    background-color: #0b5ed7;
    border-color: #0a58ca;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.5);
}

/* Button secondary */
.btn-secondary {
    color: #fff;
    background-color: #6c757d;
    border-color: #6c757d;
}

.btn-secondary:hover {
    color: #fff;
    background-color: #5c636a;
    border-color: #565e64;
}

.btn-secondary:focus {
    color: #fff;
    background-color: #5c636a;
    border-color: #565e64;
    box-shadow: 0 0 0 0.25rem rgba(108, 117, 125, 0.5);
}

/* ============================================
   9. FORM CARD STYLING
   ============================================ */

/* Card styling for forms */
.card {
    border: 1px solid #dee2e6;
    border-radius: 0.375rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.card-header {
    padding: 1rem;
    background-color: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
    border-radius: 0.375rem 0.375rem 0 0;
}

.card-header h5 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: #212529;
}

.card-body {
    padding: 1.5rem;
}

/* ============================================
   10. FORM ACTIONS
   ============================================ */

/* Form action buttons container */
.form-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #dee2e6;
}

/* ============================================
   11. RESPONSIVE ADJUSTMENTS
   ============================================ */

/* Mobile form adjustments */
@media (max-width: 576px) {
    .form-label {
        font-size: 0.95rem;
    }

    .form-control,
    .form-select {
        font-size: 16px; /* Prevents zoom on iOS */
    }

    .form-text {
        font-size: 0.8125rem;
    }

    .alert {
        margin-bottom: 1rem;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }
}

/* Tablet form adjustments */
@media (min-width: 577px) and (max-width: 992px) {
    .form-label {
        font-size: 0.975rem;
    }
}

/* ============================================
   12. ACCESSIBILITY ENHANCEMENTS
   ============================================ */

/* Focus visible for keyboard navigation */
.form-control:focus-visible,
.form-select:focus-visible,
.btn:focus-visible {
    outline: 2px solid #0d6efd;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: more) {
    .form-control,
    .form-select {
        border-width: 2px;
    }

    .btn {
        border-width: 2px;
    }

    .invalid-feedback,
    .valid-feedback {
        font-weight: 600;
    }
}

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

    @keyframes slideDown {
        from {
            opacity: 0;
        }
        to {
            opacity: 1;
        }
    }
}

/* ============================================
   13. DARK MODE SUPPORT (Optional)
   ============================================ */

@media (prefers-color-scheme: dark) {
    .form-label {
        color: #e9ecef;
    }

    .form-control,
    .form-select {
        background-color: #212529;
        border-color: #495057;
        color: #e9ecef;
    }

    .form-control:focus,
    .form-select:focus {
        background-color: #212529;
        border-color: #86b7fe;
        color: #e9ecef;
    }

    .form-control:disabled,
    .form-select:disabled {
        background-color: #495057;
        color: #adb5bd;
    }

    .form-text {
        color: #adb5bd;
    }

    .input-group-text {
        background-color: #495057;
        border-color: #495057;
        color: #e9ecef;
    }

    .card {
        background-color: #212529;
        border-color: #495057;
        color: #e9ecef;
    }

    .card-header {
        background-color: #343a40;
        border-color: #495057;
    }

    fieldset legend {
        color: #adb5bd;
        border-color: #495057;
    }
}