.platform-preview {
    border: 1px solid #ddd;
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 5px;
}

.copy-btn {
    float: right;
}

.character-count {
    color: #666;
    font-size: 0.9em;
}

.preview-header {
    background: #f8f9fa;
    padding: 10px;
    margin: -15px -15px 15px -15px;
    border-radius: 5px 5px 0 0;
    border-bottom: 1px solid #ddd;
}

.copy-btn {
    transition: all 0.3s ease;
}

.copy-btn.btn-success {
    background-color: #28a745;
    border-color: #28a745;
    color: white;
}

.copy-btn.btn-warning {
    background-color: #ffc107;
    border-color: #ffc107;
    color: black;
}

.callout {
    padding: 1.25rem;
    margin-bottom: 1.25rem;
    border-left: 4px solid;
    border-radius: 4px;
}

.callout.info {
    background-color: #e3f2fd;
    border-color: #2196f3;
}

.callout.warning {
    background-color: #fff3e0;
    border-color: #ff9800;
}

blockquote.highlight {
    font-size: 1.1em;
    border-left: 4px solid #4caf50;
    padding: 1rem;
    margin: 1.5rem 0;
    background-color: #f5f5f5;
}