body {
    margin: 0;
    padding: 0;
    background: #111827;
    color: white;
    font-family: Arial, sans-serif;
}

.container {
    max-width: 500px;
    margin: auto;
    padding: 30px 20px;
    text-align: center;
}

h1 {
    margin-bottom: 30px;
}

.grid {
    display: grid;
    gap: 20px;
}

button {
    background: #2563eb;
    border: none;
    color: white;
    padding: 24px;
    font-size: 1.2rem;
    border-radius: 16px;
    cursor: pointer;
    transition: 0.2s;
}

button:hover {
    background: #1d4ed8;
}

button:active {
    transform: scale(0.98);
}

#status {
    margin-top: 30px;
    font-size: 1rem;
    opacity: 0.9;
}