/* Mobile-first adjustments */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    .hero h1 {
        font-size: 1.8rem;
    }
    .hero p {
        font-size: 1rem;
    }
    .upload-zone {
        padding: 2rem 1rem;
    }
    .upload-icon {
        font-size: 3rem;
    }
    .result-controls {
        flex-direction: column;
        align-items: center;
    }
    .btn {
        width: 100%;
        max-width: 300px;
    }
    .feature-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    .before-after-slider {
        max-height: 400px;
    }
}

@media (max-width: 480px) {
    .feature-grid {
        grid-template-columns: 1fr;
    }
    .slider-handle::before,
    .slider-handle::after {
        display: none;
    }
}