/* Additional custom styles for PDF Train OCR */

/* Smooth scrolling for the page */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

/* Focus states for accessibility */
.upload-zone:focus-within {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* Animation for cards */
.card-custom {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* Loading animation enhancement */
@keyframes pulse {
    0% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        opacity: 1;
    }
}

.loading p {
    animation: pulse 2s infinite;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .main-container {
        margin: 1rem;
        padding: 1.5rem;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .upload-zone {
        padding: 2rem 1rem;
    }
    
    .btn-custom, .btn-export {
        width: 100%;
        margin: 5px 0;
    }
    
    .preview-image {
        max-height: 250px;
    }
}