:root {
    --bg-color: #0d1117;
    --text-color: #c9d1d9;
    --accent: #58a6ff;
    --panel-bg: #161b22;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: system-ui, -apple-system, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

#app-container {
    background-color: var(--panel-bg);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid #30363d;
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    width: 100%;
    max-width: 600px;
}

button {
    background-color: var(--accent);
    color: #000;
    border: none;
    padding: 10px 16px;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: opacity 0.2s;
}

button:hover {
    opacity: 0.8;
}

pre {
    background-color: #010409;
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    margin-top: 1rem;
    border: 1px solid #30363d;
}