/* 中央揃えレイアウト */
.main {
    min-height: calc(100vh - 48px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    padding-top: calc(48px + 24px);
    /* 固定ヘッダー分の余白 */
}

/* ログインカード */
.card {
    width: 420px;
    max-width: 92vw;
    background: var(--color-white);
    border-radius: 10px;
    box-shadow: 0 10px 26px rgba(0, 0, 0, .10);
    padding: 22px 26px 24px;
    border: 1px solid rgba(0, 0, 0, .04);
    text-align: center;
}

.card__title {
    margin: 4px 0 10px;
    font-size: 18px;
    font-weight: 700;
}

.card__desc {
    margin: 0 0 18px;
    font-size: 12px;
    color: var(--color-gray-500);
}

.btnWrap {
    display: flex;
    justify-content: center;
    margin: 14px 0 10px;
}

.ssoBtn {
    width: 100%;
    max-width: 260px;
    height: 40px;
    border: none;
    border-radius: 9999px;
    cursor: pointer;
    color: var(--color-white);
    font-weight: 600;
    font-size: 14px;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    box-shadow: var(--shadow-sm);
    transition: transform 0.1s ease, opacity 0.1s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-decoration: none;
}

.ssoBtn:hover {
    filter: brightness(1.03);
}

.ssoBtn:active {
    transform: translateY(1px);
}

.icon {
    width: 18px;
    height: 18px;
    border-radius: 6px;
    background: rgba(255, 255, 255, .22);
    display: grid;
    place-items: center;
    font-size: 11px;
    font-weight: 900;
}

.note {
    margin: 10px 0 0;
    padding-top: 12px;
    border-top: 1px solid rgba(0, 0, 0, .06);
    font-size: 11px;
    color: var(--color-gray-500);
    line-height: 1.7;
    text-align: left;
}

.note b {
    color: var(--color-gray-600);
}

.links {
    margin-top: 8px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.link {
    font-size: 11px;
    color: #2563eb;
    text-decoration: none;
    border-bottom: 1px dotted rgba(37, 99, 235, .6);
}

.link:hover {
    filter: brightness(1.05);
}

@media (max-width: 480px) {
    .card {
        padding: 20px 18px 22px;
    }

    .ssoBtn {
        width: 100%;
    }

    .note {
        text-align: left;
    }
}