/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
        margin: 15px auto;
    }
    
    .upload-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .upload-btn {
        width: 100%;
        text-align: center;
    }
    
    .actions {
        flex-direction: column;
    }
    
    .action-btn {
        width: 100%;
    }
    
    .file-item,
    .result-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .file-actions,
    .result-actions {
        margin-top: 10px;
        width: 100%;
        flex-direction: column;
    }
    
    .file-actions button,
    .result-actions button {
        width: 100%;
    }
    
    .selection-option {
        flex-direction: column;
    }
    
    .selection-option input[type="radio"] {
        margin-bottom: 10px;
    }
    
    .download-grid {
        grid-template-columns: 1fr;
    }
    
    .error-notification {
        left: 10px;
        right: 10px;
        max-width: none;
    }
    
    .progress-container {
        width: 90%;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }
    
    h2 {
        font-size: 1.1rem;
    }
    
    .upload-area {
        padding: 30px 15px;
    }
    
    .pdf-icon {
        width: 50px;
    }
    
    .selection-option {
        padding: 12px;
    }
    
    .option-label {
        font-size: 0.95rem;
    }
}

/* Touch-friendly spacing for mobile devices */
@media (hover: none) and (pointer: coarse) {
    .upload-btn,
    .action-btn,
    .download-btn,
    .remove-file {
        min-height: 44px;
        min-width: 44px;
    }
    
    .selection-option {
        padding: 18px;
    }
    
    .selection-option input[type="radio"] {
        width: 24px;
        height: 24px;
    }
}