.vpc-container {
    max-width: 800px;
    margin: 20px auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.vpc-step {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

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

.vpc-upload-zone.dragover {
    border-color: #007cba;
    background-color: #e6f3ff;
    transform: scale(1.02);
}

.vpc-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.vpc-icon.success {
    color: #28a745;
}

.vpc-icon.error {
    color: #dc3545;
}

.vpc-btn {
    background: #007cba;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.vpc-btn:hover {
    background: #005a8b;
    color: white;
    text-decoration: none;
}

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

.vpc-btn-success {
    background: #28a745;
}

.vpc-btn-success:hover {
    background: #1e7e34;
}

.vpc-btn-secondary {
    background: #6c757d;
}

.vpc-btn-secondary:hover {
    background: #5a6268;
}

.vpc-btn-link {
    background: none;
    color: #007cba;
    border: none;
    cursor: pointer;
    text-decoration: underline;
}

.vpc-presets {
    margin: 20px 0;
}

.vpc-preset {
    border: 2px solid #007cba;
    background: #f0f8ff;
    border-radius: 8px;
    padding: 20px;
    cursor: pointer;
}

.vpc-badge {
    background: #007cba;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
    margin-bottom: 10px;
    display: inline-block;
}

.vpc-preset ul {
    margin: 10px 0;
    padding-left: 20px;
}

.vpc-center {
    text-align: center;
}

.vpc-progress-bar {
    background: #e0e0e0;
    border-radius: 20px;
    height: 20px;
    margin: 20px auto;
    max-width: 400px;
    overflow: hidden;
}

#vpc-progress-fill {
    background: #007cba;
    height: 100%;
    border-radius: 20px;
    width: 0%;
    transition: width 0.3s ease;
}

.vpc-buttons {
    margin-top: 20px;
}

.vpc-buttons .vpc-btn {
    margin: 0 10px;
}

#vpc-file-info {
    margin: 15px 0;
    font-weight: bold;
}