.upload-section {
    animation: fadeInUp 0.6s ease-out;
}

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

.upload-card {
    animation: fadeInUp 0.6s ease-out backwards;
}

.image-card {
    animation-delay: 0.1s;
}

.pdf-card {
    animation-delay: 0.2s;
}

.upload-area {
    animation: fadeInUp 0.6s ease-out 0.3s backwards;
}

.uploading .upload-icon {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.upload-card.selected {
    border: 2px solid var(--primary);
    background: linear-gradient(135deg, rgba(79, 172, 254, 0.1), rgba(0, 242, 254, 0.1));
}

.upload-card.selected::after {
    content: '✓';
    position: absolute;
    top: 10px;
    left: 10px;
    width: 20px;
    height: 20px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}