.min-vh-100 {
    min-height: 100vh;
}

.card {
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.card:hover {
    transform: translateY(-2px);
}

.btn-check:checked + .btn {
    border-color: var(--bs-primary);
    background-color: var(--bs-primary);
    color: white;
}

.color-preset {
    width: 30px;
    height: 30px;
    cursor: pointer;
    transition: transform 0.2s ease-in-out;
}

.color-preset:hover {
    transform: scale(1.1);
}

.step-number {
    transition: transform 0.2s ease-in-out;
}

.step-number:hover {
    transform: scale(1.05);
}

.form-control:focus, .form-select:focus {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 0.2rem rgba(var(--bs-primary-rgb), 0.25);
}

.bg-light {
    background-color: #f8f9fa !important;
}

/* Custom range slider */
.form-range::-webkit-slider-thumb {
    background-color: var(--bs-primary);
}

.form-range::-moz-range-thumb {
    background-color: var(--bs-primary);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .display-4 {
        font-size: 2.5rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
}

/* Animation for QR code generation */
@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

#previewResult {
    animation: fadeIn 0.5s ease-in-out;
}