/* ログイン画面 */
.auth-main {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.auth-card {
    width: 100%;
    max-width: 416px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.auth-logo {
    width: 70%;
    max-width: 260px;
    height: auto;
}

.auth-form {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 32px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(2, 6, 23, .08);
}

    .auth-form h1 {
        font-size: 1.5rem;
        text-align: center;
        margin-bottom: 4px;
    }

/* 入力欄とエラーメッセージのまとまり */
.auth-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* ログインボタンは入力欄と同じ高さ（48px）に揃える */
.auth-form button[type="submit"] {
    height: 48px;
    margin-top: 4px;
}

.auth-copyright {
    margin: 0;
    color: #94a3b8;
    font-size: .8125rem;
}