/* ========================================
   購入手続きゲートウェイ（ログイン/登録/ゲスト選択）
   1rem = 10px @1920px
   ======================================== */

/* パンくずリスト */
.gate-breadcrumb {
    background-color: var(--cream-bg);
    padding: 2.8rem 0 0;
}

.gate-breadcrumb-inner {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 11.2rem;
}

.gate-breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 1.4rem;
    font-size: 2rem;
    color: var(--text-light);
}

.gate-breadcrumb-list a {
    color: var(--accent-blue);
    font-weight: 500;
}

.gate-breadcrumb-list a:hover {
    text-decoration: underline;
}

.gate-breadcrumb-separator {
    color: var(--text-light);
    font-size: 1.8rem;
}

.gate-breadcrumb-current {
    color: var(--text-color);
    font-weight: 600;
}

/* メインセクション */
.gate-section {
    background-color: var(--cream-bg);
    padding: 5.6rem 0 8.4rem;
}

.gate-section-inner {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 11.2rem;
}

.gate-title {
    font-size: 4.2rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1.4rem;
    padding-bottom: 1.4rem;
    border-bottom: 0.42rem solid var(--primary-color);
    display: inline-block;
}

.gate-description {
    font-size: 2.2rem;
    color: var(--text-light);
    margin-bottom: 4.2rem;
}

/* カード3列レイアウト */
.gate-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3.5rem;
    margin-bottom: 4.2rem;
}

.gate-card {
    background-color: var(--bg-white);
    border-radius: 1.4rem;
    padding: 4.2rem 3.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: box-shadow 0.2s ease;
}

.gate-card:hover {
    box-shadow: 0 0.7rem 2.8rem rgba(0, 0, 0, 0.08);
}

.gate-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 8rem;
    height: 8rem;
    border-radius: 50%;
    background-color: var(--primary-light, #FDF4D0);
    color: var(--primary-dark);
    margin-bottom: 2.8rem;
}

.gate-card-icon svg {
    width: 4rem;
    height: 4rem;
}

.gate-card-title {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1.4rem;
}

.gate-card-desc {
    font-size: 1.82rem;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 2.8rem;
}

/* ボタン */
.gate-btn {
    display: block;
    width: 100%;
    padding: 1.75rem 2.8rem;
    border-radius: 0.7rem;
    font-size: 2.1rem;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: auto;
}

.gate-btn-primary {
    background-color: var(--primary-color);
    color: #fff;
    border: 0.28rem solid var(--primary-color);
}

.gate-btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
}

.gate-btn-secondary {
    background-color: #fff;
    color: var(--text-color);
    border: 0.28rem solid var(--border-color);
}

.gate-btn-secondary:hover {
    background-color: #f5f5f5;
    border-color: var(--text-light);
}

/* ゲスト購入カードは控えめなスタイル */
.gate-card-guest {
    background-color: #fafbfc;
    border: 0.18rem solid var(--border-color);
}

/* カートに戻るリンク */
.gate-back {
    text-align: center;
    margin-top: 2.8rem;
}

.gate-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    font-size: 2rem;
    font-weight: 600;
    color: var(--accent-blue);
    text-decoration: none;
}

.gate-back-link:hover {
    text-decoration: underline;
}

/* ========================================
   レスポンシブ: タブレット/モバイル（768px以下）
   ======================================== */
@media (max-width: 768px) {
    .gate-breadcrumb-inner {
        padding: 0 4.2rem;
    }

    .gate-section {
        padding: 4.2rem 0 6.3rem;
    }

    .gate-section-inner {
        padding: 0 4.2rem;
    }

    .gate-title {
        font-size: 3.5rem;
    }

    .gate-description {
        font-size: 2rem;
    }

    .gate-cards {
        grid-template-columns: 1fr;
        gap: 2.8rem;
    }

    .gate-card {
        padding: 3.5rem 2.8rem;
    }
}

/* ========================================
   レスポンシブ: 小画面モバイル（480px以下）
   ======================================== */
@media (max-width: 480px) {
    .gate-breadcrumb-inner {
        padding: 0 2.8rem;
    }

    .gate-breadcrumb-list {
        font-size: 1.96rem;
    }

    .gate-section {
        padding: 2.8rem 0 5.6rem;
    }

    .gate-section-inner {
        padding: 0 2.8rem;
    }

    .gate-title {
        font-size: 3.2rem;
    }

    .gate-card {
        padding: 2.8rem 2.1rem;
    }

    .gate-card-icon {
        width: 6.4rem;
        height: 6.4rem;
    }

    .gate-card-icon svg {
        width: 3.2rem;
        height: 3.2rem;
    }

    .gate-card-title {
        font-size: 2.52rem;
    }

    .gate-btn {
        font-size: 2rem;
        padding: 1.4rem 2.1rem;
    }
}