/**
 * Booking Validation Styles
 * Professional styling for validation messages and form feedback
 * 
 * @since Session 9
 */

/* Error Container */
.booking-errors-container {
    margin: 20px 0;
    animation: slideDown 0.3s ease-in-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.booking-errors-container .alert {
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(220, 53, 69, 0.15);
    border-left: 5px solid #dc3545;
}

.booking-errors-container .alert-heading {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #721c24;
    display: flex;
    align-items: center;
    gap: 10px;
}

.booking-errors-container .alert-heading i {
    font-size: 18px;
}

.booking-error-list {
    padding: 10px 0;
}

.booking-error-list ul {
    list-style: none;
}

.booking-error-list li {
    padding: 8px 0;
    color: #721c24;
    font-size: 14px;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.booking-error-list li:last-child {
    border-bottom: none;
}

.booking-error-list li::before {
    content: "✕ ";
    font-weight: bold;
    margin-right: 8px;
    color: #dc3545;
}

/* Form Field Validation States */
.booking-form-container input.is-invalid,
.booking-form-container select.is-invalid,
.booking-form-container textarea.is-invalid,
form[id*="booking"] input.is-invalid,
form[id*="booking"] select.is-invalid,
form[id*="booking"] textarea.is-invalid {
    border-color: #dc3545 !important;
    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 fill='%23dc3545' d='M8 4a.5.5 0 0 0-.5-.5h-3a.5.5 0 0 0 0 1h3A.5.5 0 0 0 8 4z'/%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);
}

.booking-form-container input.is-valid,
.booking-form-container select.is-valid,
.booking-form-container textarea.is-valid,
form[id*="booking"] input.is-valid,
form[id*="booking"] select.is-valid,
form[id*="booking"] textarea.is-valid {
    border-color: #198754 !important;
    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-4.6 7.05c-.9.9-1.9.2-2.2-.5z'/%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);
}

.booking-form-container input:focus.is-invalid,
.booking-form-container select:focus.is-invalid,
.booking-form-container textarea:focus.is-invalid,
form[id*="booking"] input:focus.is-invalid,
form[id*="booking"] select:focus.is-invalid,
form[id*="booking"] textarea:focus.is-invalid {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.booking-form-container input:focus.is-valid,
.booking-form-container select:focus.is-valid,
.booking-form-container textarea:focus.is-valid,
form[id*="booking"] input:focus.is-valid,
form[id*="booking"] select:focus.is-valid,
form[id*="booking"] textarea:focus.is-valid {
    border-color: #198754;
    box-shadow: 0 0 0 0.2rem rgba(25, 135, 84, 0.25);
}

/* Label styling for required fields */
.booking-form-container label.required::after,
form[id*="booking"] label.required::after {
    content: " *";
    color: #dc3545;
    font-weight: bold;
}

/* Submit button disabled state during validation */
.booking-form-container button:disabled,
form[id*="booking"] button:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .booking-errors-container .alert {
        padding: 15px;
    }

    .booking-errors-container .alert-heading {
        font-size: 15px;
    }

    .booking-error-list li {
        font-size: 13px;
        padding: 7px 0;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .booking-errors-container .alert {
        background-color: rgba(220, 53, 69, 0.1);
        border-color: #dc3545;
    }

    .booking-errors-container .alert-heading {
        color: #ff6b6b;
    }

    .booking-error-list li {
        color: #ff6b6b;
        border-bottom-color: rgba(255, 255, 255, 0.1);
    }
}

/* Focus visible for accessibility */
.booking-errors-container button:focus-visible {
    outline: 2px solid #0d6efd;
    outline-offset: 2px;
}

/* Spinner animation for loading state */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.booking-form-container .submitting button,
form[id*="booking"] .submitting button {
    pointer-events: none;
    opacity: 0.7;
}

.booking-form-container .submitting button::after {
    content: "";
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-left: 8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}