body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    color: #333;
}
.container {
    text-align: center;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}
h1 { margin-bottom: 0.5rem; }
p { color: #666; margin-bottom: 2rem; }
.ball {
    width: 80px;
    height: 80px;
    background-color: #007bff;
    border-radius: 50%;
    margin: 20px auto;
    transition: all 0.3s ease;
    cursor: pointer;
}
.ball:hover { transform: scale(1.1); }
button {
    padding: 12px 24px;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    background: #007bff;
    color: white;
    border-radius: 8px;
    transition: background 0.2s;
}
button:hover { background: #0056b3; }
.status { margin-top: 1.5rem; font-size: 0.9rem; color: #888; }
#status-text { color: #28a745; font-weight: bold; }