.pdf-tool-container {
    max-width: 600px;
    margin: 20px auto;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.pdf-upload-zone {
    border: 2px dashed #ccc;
    border-radius: 8px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    position: relative;
    background: #fafafa;
    transition: all 0.3s ease;
}

.pdf-upload-zone:hover {
    border-color: #007cba;
    background: #f0f8ff;
}

.pdf-upload-zone input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 10px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background: #007cba;
    color: white;
}

.btn-primary:hover {
    background: #005a87;
}

.btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.result-container {
    margin-top: 20px;
}