.file-preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.8);
    z-index: 9999;
    display: flex;
    flex-direction: column;
}

.preview-header {
    background: #1d2327;
    color: white;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.preview-header h3 {
    margin: 0;
    font-size: 16px;
}

.close-preview {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 0 10px;
}

.preview-content {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.unsupported-preview {
    text-align: center;
    color: white;
}

.unsupported-preview .button {
    margin-top: 10px;
    background: #2271b1;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 3px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}