.pdf-to-ppt-converter {
    max-width: 600px;
    margin: 20px auto;
    padding: 30px;
    border: 1px solid #ddd;
    border-radius: 10px;
    background: white;
}

.upload-area {
    border: 2px dashed #007cba;
    border-radius: 10px;
    padding: 40px 20px;
    text-align: center;
    margin: 20px 0;
    background: #f9f9f9;
}

.upload-btn, #convertBtn, .download-btn {
    padding: 15px 30px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    margin: 10px 0;
    text-decoration: none;
    display: inline-block;
}

.upload-btn { background: #007cba; color: white; }
#convertBtn { background: #28a745; color: white; }
.download-btn { background: #17a2b8; color: white; }

#convertBtn:disabled { background: #6c757d; cursor: not-allowed; }

.file-info {
    background: #e9ecef;
    padding: 15px;
    border-radius: 5px;
    margin: 15px 0;
}

#status {
    padding: 12px;
    border-radius: 5px;
    margin: 15px 0;
}

.status-success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.status-error { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
.status-processing { background: #cce7ff; color: #004085; border: 1px solid #b3d9ff; }

#downloadSection {
    background: #d4edda;
    padding: 20px;
    border-radius: 10px;
    margin: 20px 0;
    text-align: center;
}