/* 全体のレイアウト設定 */
body, html {
    height: 100%;
    margin: 0;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background-color: #f8f9fa;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* ログインカード */
.login-card {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    text-align: center;
    max-width: 350px;
    width: 90%;
}

h1 {
    font-size: 24px;
    color: #333;
    margin-bottom: 30px;
    line-height: 1.2;
}

/* Google風ログインボタン */
.google-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: #fff;
    color: #757575;
    border: 1px solid #dadce0;
    padding: 10px 20px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color .2s, box-shadow .2s;
    cursor: pointer;
    width: 100%;
    box-sizing: border-box;
}

.google-btn:hover {
    background-color: #f7f8f8;
    box-shadow: 0 1px 2px rgba(60,64,67,0.3), 0 1px 3px 1px rgba(60,64,67,0.15);
}

.google-icon {
    width: 18px;
    height: 18px;
    margin-right: 10px;
}

.footer-text {
    margin-top: 20px;
    font-size: 12px;
    color: #999;
}