body {
    font-family: sans-serif;
    padding: 2em;
    background: #f5f5f5;
    margin: 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

h2 {
    color: #333;
    border-bottom: 2px solid #4a90d9;
    padding-bottom: 0.5em;
}

code {
    background: #eee;
    padding: 0.1em 0.4em;
    border-radius: 3px;
    font-size: 0.9em;
}

.buttons {
    margin: 1em 0;
}

.params {
    margin: 0.5em 0 1em 0;
}

.params input {
    width: 80px;
    padding: 0.4em;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 0.95em;
    text-align: center;
}

.params span {
    margin: 0 0.3em;
    font-size: 1.1em;
    color: #555;
}

button {
    background: #4a90d9;
    color: #fff;
    border: none;
    padding: 0.6em 1.2em;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.95em;
    margin-right: 0.5em;
    transition: background 0.2s;
}

button:hover {
    background: #357abd;
}

#log {
    background: #fff;
    border: 1px solid #ccc;
    border-radius: 4px;
    min-height: 8em;
    padding: 1em;
    font-family: monospace;
    font-size: 0.9em;
    white-space: pre-wrap;
    overflow: auto;
}
