/**
 * Input Validation Styles
 * Modern, accessible styling for form validation
 */

/* Validation container */
.validation-container {
    position: relative;
    margin-bottom: 1rem;
}

/* Input validation states */
.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 1.88-1.88L6.14 2.8l.94.94L4.12 6.73l-.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);
    padding-right: calc(1.5em + 0.75rem);
}

.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 1.4m0-1.4-1.4 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);
    padding-right: calc(1.5em + 0.75rem);
}

.form-control.is-validating {
    border-color: #ffc107;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23ffc107'%3e%3cpath d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z'/%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);
    padding-right: calc(1.5em + 0.75rem);
}

/* Error message styling */
.validation-error-container {
    margin-top: 0.25rem;
}

.validation-error-message {
    font-size: 0.875rem;
    color: #dc3545;
    display: flex;
    align-items: center;
    animation: fadeIn 0.2s ease-in-out;
}

.validation-error-message i {
    margin-right: 0.25rem;
    font-size: 0.75rem;
}

/* Success message styling */
.validation-success-message {
    font-size: 0.875rem;
    color: #198754;
    display: flex;
    align-items: center;
    animation: fadeIn 0.2s ease-in-out;
}

.validation-success-message i {
    margin-right: 0.25rem;
    font-size: 0.75rem;
}

/* Form validation state */
.was-validated .form-control:invalid {
    border-color: #dc3545;
}

.was-validated .form-control:valid {
    border-color: #198754;
}

/* Focus states */
.form-control:focus.is-valid {
    border-color: #198754;
    box-shadow: 0 0 0 0.2rem rgba(25, 135, 84, 0.25);
}

.form-control:focus.is-invalid {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

/* Animation for validation state changes */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-5px);
    }
    75% {
        transform: translateX(5px);
    }
}

/* Shake animation for invalid inputs */
.form-control.is-invalid.shake {
    animation: shake 0.5s ease-in-out;
}

/* Loading spinner for validating state */
.form-control.is-validating::after {
    content: '';
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    width: 1rem;
    height: 1rem;
    border: 2px solid #ffc107;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translateY(-50%) rotate(0deg); }
    100% { transform: translateY(-50%) rotate(360deg); }
}

/* Accessibility improvements */
.form-control:focus {
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .form-control.is-valid {
        border-width: 2px;
    }
    
    .form-control.is-invalid {
        border-width: 2px;
    }
    
    .validation-error-message {
        font-weight: bold;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .validation-error-message,
    .validation-success-message {
        animation: none;
    }
    
    .form-control.is-invalid.shake {
        animation: none;
    }
    
    .form-control.is-validating::after {
        animation: none;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .form-control.is-valid {
        background-color: rgba(25, 135, 84, 0.1);
    }
    
    .form-control.is-invalid {
        background-color: rgba(220, 53, 69, 0.1);
    }
    
    .validation-error-message {
        color: #ff6b6b;
    }
    
    .validation-success-message {
        color: #51cf66;
    }
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .validation-error-message {
        font-size: 0.8rem;
    }
    
    .validation-container {
        margin-bottom: 0.75rem;
    }
}

/* Print styles */
@media print {
    .validation-error-container,
    .validation-success-message {
        display: none;
    }
    
    .form-control.is-valid,
    .form-control.is-invalid {
        background-image: none;
        padding-right: 0.75rem;
    }
}