/**
 * BCSS Shared UI - Form Enhancements
 *
 * Extends Bootstrap form styles with healthcare/admin-specific improvements.
 * Includes date pickers, multi-select, file uploads, and validation states.
 */

/* ===== Form Layout ===== */
.form-section {
    margin-bottom: var(--spacing-xl);
}

.form-section-title {
    border-bottom: 2px solid var(--gray-300);
    color: var(--gray-900);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
}

.form-row {
    display: grid;
    gap: var(--spacing-md);
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    margin-bottom: var(--spacing-md);
}

.form-row.two-col {
    grid-template-columns: repeat(2, 1fr);
}

.form-row.three-col {
    grid-template-columns: repeat(3, 1fr);
}

/* RES-005 P1: Tablet two-column layout for three-col forms */
@media (width >= 576px) and (width <= 991.98px) {
    .form-row.three-col {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile: 1 column for all */
@media (width <= 767.98px) {
    .form-row,
    .form-row.two-col,
    .form-row.three-col {
        grid-template-columns: 1fr;
    }

    /* RES-025 P2: Reduce form section spacing on mobile to prevent excessive gaps in long forms */
    .form-section {
        margin-bottom: var(--spacing-md); /* Reduced from var(--spacing-xl) 32px to 16px */
    }
}

/* ===== Enhanced Form Controls ===== */
.form-control,
.form-select {
    border: var(--border-width) solid var(--input-border);
    border-radius: var(--border-radius);
    height: var(--input-height);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--input-focus-border);
    box-shadow: var(--shadow-focus);
}

.form-control.is-invalid:focus,
.form-select.is-invalid:focus {
    border-color: var(--danger-color);
    box-shadow: var(--shadow-focus-danger);
}

.form-control.is-valid:focus,
.form-select.is-valid:focus {
    border-color: var(--success-color);
    box-shadow: var(--shadow-focus-success);
}

/* ===== Form Labels ===== */
.form-label {
    align-items: center;
    color: var(--gray-700);
    display: flex;
    font-weight: var(--font-weight-medium);
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

.form-label-info {
    color: var(--info-text-color);  /* ACC-029: Use accessible info color (4.6:1 on white) instead of --info-color (2.8:1) */
    cursor: help;
    font-size: var(--font-size-sm);
}

/* ===== Required Field Indicator ===== */
/* A6: CSS-based required asterisk (replaces th:utext HTML injection for XSS safety) */
.required-field::after {
    color: var(--danger-color);
    content: " *";
}

.required-indicator {
    color: var(--danger-color);
    font-weight: var(--font-weight-bold);
    margin-left: var(--spacing-xs);
}

.form-required-legend {
    color: var(--gray-700);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.form-required-legend::before {
    color: var(--danger-color);
    content: "* ";
    font-weight: var(--font-weight-bold);
}

/* ===== Input Groups ===== */
.input-group-icon {
    align-items: center;
    background-color: var(--gray-100);
    border: var(--border-width) solid var(--input-border);
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    border-right: none;
    display: flex;
    padding: 0 var(--spacing-md);
}

.input-group-icon + .form-control {
    border-left: none;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

/* ===== Search Input ===== */
.search-input-wrapper {
    position: relative;
}

.search-input-wrapper .form-control {
    padding-left: 2.5rem;
}

.search-input-wrapper .search-icon {
    color: var(--gray-600); /* ACC-L05: Improved from gray-500 (2.06:1) to gray-600 (4.6:1) for WCAG 3:1 non-text contrast */
    left: var(--spacing-md);
    pointer-events: none;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

/* ACC-021: Ensure 44x44px minimum touch target (WCAG 2.5.5) */
.search-input-wrapper .clear-search {
    align-items: center;
    background: none;
    border: none;
    color: var(--gray-600); /* ACC-L05: Improved from gray-500 (2.06:1) to gray-600 (4.6:1) for WCAG 3:1 non-text contrast */
    cursor: pointer;
    display: flex;
    font-size: var(--font-size-lg);
    justify-content: center;
    min-height: 44px;
    min-width: 44px;
    padding: 0;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
}

.search-input-wrapper .clear-search:hover {
    color: var(--gray-700);
}

/* ===== Date/Time Picker Integration (Flatpickr) ===== */
.flatpickr-wrapper {
    position: relative;
    width: 100%;
}

.flatpickr-input {
    cursor: pointer;
    padding-right: 2.5rem;
}

.flatpickr-calendar-icon {
    color: var(--gray-600); /* ACC-L06: Improved from gray-500 (2.06:1) to gray-600 (4.6:1) for WCAG 3:1 non-text contrast */
    pointer-events: none;
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
}

/* ===== Multi-Select Integration (Choices.js) ===== */
.choices {
    margin-bottom: 0;
}

.choices__inner {
    background-color: var(--input-bg);
    border: var(--border-width) solid var(--input-border);
    border-radius: var(--border-radius);
    min-height: var(--input-height);
    padding: 0.5rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.choices:focus-within .choices__inner {
    border-color: var(--input-focus-border);
    box-shadow: var(--shadow-focus);
}

.choices__list--multiple .choices__item {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    padding: 0.25rem 0.5rem;
}

/* ===== File Upload ===== */
.file-upload-wrapper {
    display: inline-block;
    overflow: hidden;
    position: relative;
    width: 100%;
}

.file-upload-input {
    left: -9999px;
    position: absolute;
}

.file-upload-label {
    align-items: center;
    background-color: var(--gray-100);
    border: 2px dashed var(--gray-400);
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-fast);
}

.file-upload-label:hover {
    background-color: var(--primary-lightest);
    border-color: var(--primary-color);
}

.file-upload-label.dragging {
    background-color: var(--primary-lightest);
    border-color: var(--primary-color);
    transform: scale(1.02);
}

.file-upload-icon {
    color: var(--gray-600);
    font-size: 2rem;
}

.file-upload-text {
    color: var(--gray-700);
    font-size: var(--font-size-sm);
}

.file-upload-list {
    list-style: none;
    margin-top: var(--spacing-md);
    padding: 0;
}

.file-upload-item {
    align-items: center;
    border: var(--border-width) solid var(--gray-300);
    border-radius: var(--border-radius);
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-sm);
}

.file-upload-item-info {
    align-items: center;
    display: flex;
    flex: 1;
    gap: var(--spacing-sm);
}

.file-upload-item-name {
    font-weight: var(--font-weight-medium);
}

.file-upload-item-size {
    color: var(--gray-700);
    font-size: var(--font-size-sm);
}

/* ACC-L14: Added min-height/min-width for 44px WCAG 2.5.5 touch target */
.file-upload-item-remove {
    align-items: center;
    background: none;
    border: none;
    color: var(--danger-color);
    cursor: pointer;
    display: inline-flex;
    font-size: var(--font-size-lg);
    justify-content: center;
    min-height: 44px;
    min-width: 44px;
    padding: var(--spacing-xs);
}

.file-upload-item-remove:hover {
    color: var(--danger-hover);
}

/* ===== Switch Toggle ===== */
.form-switch .form-check-input {
    cursor: pointer;
    height: 1.5rem;
    width: 3rem;
}

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

/* ===== Radio/Checkbox Cards ===== */
.form-check-card {
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius);
    cursor: pointer;
    display: block;
    padding: var(--spacing-md);
    position: relative;
    transition: all var(--transition-fast);
}

.form-check-card:hover {
    background-color: var(--primary-lightest);
    border-color: var(--primary-color);
}

.form-check-card input[type="radio"],
.form-check-card input[type="checkbox"] {
    opacity: 0;
    position: absolute;
}

.form-check-card input[type="radio"]:checked ~ label,
.form-check-card input[type="checkbox"]:checked ~ label {
    background-color: var(--primary-lightest);
    border-color: var(--primary-color);
}

.form-check-card-label {
    align-items: flex-start;
    cursor: pointer;
    display: flex;
    gap: var(--spacing-sm);
    user-select: none;
}

.form-check-card-icon {
    color: var(--primary-color-accessible);
    font-size: 1.5rem;
}

.form-check-card-content {
    flex: 1;
}

.form-check-card-title {
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
}

.form-check-card-description {
    color: var(--gray-700);
    font-size: var(--font-size-sm);
}

/* ===== Validation States ===== */
.was-validated .form-control:valid,
.form-control.is-valid {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2328a745' 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-position: right calc(0.375em + 0.1875rem) center;
    background-repeat: no-repeat;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
    border-color: var(--success-color);
    padding-right: calc(1.5em + 0.75rem);
}

.was-validated .form-control:invalid,
.form-control.is-invalid {
    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-position: right calc(0.375em + 0.1875rem) center;
    background-repeat: no-repeat;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
    border-color: var(--danger-color);
    padding-right: calc(1.5em + 0.75rem);
}

.valid-feedback,
.invalid-feedback {
    display: none;
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

.valid-feedback {
    color: var(--success-color);
}

.invalid-feedback {
    color: var(--danger-color);
}

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

.was-validated .form-control:invalid ~ .invalid-feedback,
.form-control.is-invalid ~ .invalid-feedback {
    display: block;
}

/* ===== Form Actions ===== */
.form-actions {
    align-items: center;
    border-top: var(--border-width) solid var(--gray-300);
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
}

.form-actions-left {
    margin-right: auto;
}

/* ===== Placeholder Text Visibility (A11Y-015 - P3) ===== */
.form-control::placeholder,
.form-select::placeholder,
input::placeholder,
textarea::placeholder {
    color: var(--gray-600); /* Increased from gray-500 for better visibility */
    opacity: 1; /* Ensure consistent opacity across browsers */
}

/* ===== Responsive Forms ===== */
@media (width <= 767.98px) {
    /* Prevent iOS zoom on input focus (WCAG 2.5.5, RES-007) */
    .form-control,
    .form-select,
    input[type="text"],
    input[type="email"],
    input[type="tel"],
    input[type="number"],
    input[type="password"],
    textarea {
        /* stylelint-disable-next-line declaration-no-important -- Prevent iOS zoom on input focus */
        font-size: max(16px, 1rem) !important;
    }

    .form-actions {
        align-items: stretch;
        flex-direction: column-reverse;
    }

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