/**
 * Enhanced Form Styling CSS
 * Provides validation styling, accessibility improvements, and modern form design
 */

/* Form validation styling */
.form-control.is-valid {
    border-color: #198754;
    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 6.73.94-.94 1.44-1.44L6.7 2.3l.94.94L4.68 6.2l-.94.94-.94-.94z'/%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 {
    border-color: #dc3545;
    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 d='m5.8 4.6 1.4 1.4 1.4-1.4'/%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);
}

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

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

/* Loading button styling */
.btn-loading .spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

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

/* Visually hidden utility class for accessibility */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Focus improvements for accessibility */
.form-control:focus {
    border-color: #86b7fe;
    outline: 0;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

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

/* Additional form enhancements */
.form-control {
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:hover:not(:focus):not(.is-invalid):not(.is-valid) {
    border-color: #ced4da;
}

/* Button hover and active states */
.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
}

.btn-primary:active {
    background-color: #0a58ca;
    border-color: #0a53be;
}

/* Form group spacing */
.form-group {
    margin-bottom: 1rem;
}

/* Responsive adjustments */
@media (max-width: 576px) {
    .form-control {
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .btn {
        font-size: 16px;
        padding: 0.75rem 1rem;
    }
}