body {
    font-family: 'Arial', sans-serif;
    background-color: #f4f7f6;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

h1 { color: #ffca28; } /* 파이어베이스 노란색 느낌 */

button {
    background-color: #039be5;
    color: white;
    border: none;
    padding: 10px 20px;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
    transition: 0.3s;
}

button:hover { background-color: #0277bd; }

.status-box {
    margin-top: 20px;
    font-weight: bold;
    color: #555;
}