/* ----------------------------------------------------------
リセット & 基本設定
----------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* 基本的なフォント、背景色、文字色、文字・行間を設定 */
body {
    font-family: "Zen Maru Gothic", 'Noto Sans JP', sans-serif;
    font-weight: 700;
    font-style: normal;
    background-color: #f7f7f7;
    color: #333;
    letter-spacing: 0.05em;
    line-height: 1.8;
}
img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ----------------------------------------------------------
ヘッダー (Block: header)
----------------------------------------------------------- */
.header {
    position: sticky;
    top: 0;
    z-index: 50;
    background-color: #fff;
    border-bottom: 1px solid #e5e7eb;
    width: 100%;
}
.header__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.75rem 1rem;
}
.header__logo-link img {
    height: 2rem;
}
.header__nav--pc {
    display: none; /* SPでは非表示 */
}
.header__nav-list {
    display: flex;
    align-items: center;
    list-style: none;
}
.header__nav-item {
    margin-left: 1.5rem;
}
.header__nav-link {
    font-size: 0.875rem;
    font-weight: 700;
    transition: color 0.3s;
}
.header__nav-link:hover {
    color: #f58220;
}
.header__menu-button {
    background: none;
    border: none;
    cursor: pointer;
    color: #374151;
}
.header__nav--sp {
    display: none; /* 通常は非表示 */
    background-color: #fff;
    border-top: 1px solid #e5e7eb;
}
.header__nav--sp.is-open {
    display: block; /* is-openクラスで表示 */
}
.header__nav-link--sp {
    display: block;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    font-weight: 700;
    border-bottom: 1px solid #f3f4f6;
    transition: background-color 0.3s;
}
.header__nav-link--sp:hover {
    background-color: #f9fafb;
}

/* ----------------------------------------------------------
メインコンテンツ
----------------------------------------------------------- */
/* メインビジュアル */
.main-visual {
    background-image: url(../img/bg_mv.png);
    background-size: 60px auto;
    line-height: 0; /* 画像下の余白を削除 */
}
.main-visual__image {
    width: 100%;
    display: block;
    margin: 0 auto;
}
.main-visual__image--pc {
    display: none; /* SPでは非表示 */
    max-width: 1580px;
}
.main-visual__image--sp {
    display: block; /* SPでは表示 */
}

/* 各セクションの共通設定 */
.section {
    padding: 1.5rem;
}
.section__inner {
    max-width: 640px;
    margin: 0 auto;
}
.section__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #F84F96;
    text-align: center;
    margin-bottom: 1rem;
}
.section--white {
    background-color: #fff;
}
.section--pink {
    /* background-color: #F84F96; */
    background-image: url(../img/bg_mv.png);
    background-size: 60px auto;
    color: #fff;
}
.section--light-pink {
    background-color: #fff0f6;
}

/* ----------------------------------------------------------
各セクションの個別スタイル
----------------------------------------------------------- */
/* イベント導入セクション */
.intro {
    text-align: center;
}
.intro__image {
    display: block;
    max-width: 90%;
    margin: 0 auto 1.5rem;
}
.intro__text {
    text-align: center;
    font-weight: 700;
    font-size: 0.875rem;
}
.intro__question {
    font-weight: 700;
    margin-top: 1rem;
}

/* イベント詳細セクション */
.event-details__image {
    display: block;
    margin: 0 auto 1rem;
    border-radius: 0.5rem;
}
.event-details__box {
    background-color: #fff;
    color: #333;
    padding: 0.5rem;
    border-radius: 0.5rem;
    text-align: center;
    margin-bottom: 1rem;
}
.event-details__box p {
    font-weight: 700;
}
.event-details__note {
    font-size: 0.75rem;
    margin-top: 0.5rem;
}

/* 広告ギャラリーセクション */
.ad-gallery__text {
    margin-bottom: 0.5rem;
}
.ad-gallery__note {
    font-size: 0.75rem;
    margin-bottom: 1rem;
}
.slider {
    position: relative;
    overflow: hidden;
}
.slider__track {
    display: flex;
    transition: transform 0.5s ease-in-out;
}
.slider__item {
    width: 100%;
    flex-shrink: 0;
}
.slider__button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.5);
    border: none;
    border-radius: 9999px;
    width: 2.5rem;
    height: 2.5rem;
    color: #F84F96;
    cursor: pointer;
    transition: background-color 0.3s;
}
.slider__button:hover {
    background-color: rgba(255, 255, 255, 0.75);
}
.slider__button--prev {
    left: 0.75rem;
}
.slider__button--next {
    right: 0.75rem;
}
.slider__pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 1rem;
}
.slider__dot {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 9999px;
    background-color: #d1d5db;
    border: none;
    cursor: pointer;
    margin: 0 0.25rem;
    transition: background-color 0.3s;
}
.slider__dot--active {
    background-color: #F84F96;
}

/* キャンペーンセクション */
section.campaign {
    padding: 1.5rem 1.5rem 3.5rem;
}
.campaign__section {
    text-align: center;
}
.campaign__section--fanm {
    border-top: 2px dashed #F84F96;
    padding-top: 1.5rem;
    margin-top: 1.5rem;
}
.campaign__sns-button {
    display: inline-flex;
    align-items: center;
    background-color: #000;
    color: #fff;
    font-weight: 700;
    padding: 0.75rem 2rem;
    border-radius: 9999px;
    margin-top: 1rem;
}
.campaign__sns-button svg {
    width: 1.25rem;
    height: 1.25rem;
    margin-right: 0.5rem;
}
.campaign__banner-link {
    display: block;
    margin-top: 1rem;
}
.campaign__banner-image {
    border-radius: 0.5rem;
}
.campaign__period {
    font-size: 0.875rem;
    margin-top: 1rem;
}
.campaign__text {
    text-align: left;
}

/* Instagramギャラリーセクション */
.insta-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.25rem;
}
.insta-gallery__item {
    position: relative;
    aspect-ratio: 1 / 1;
}
.insta-gallery__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.insta-gallery__overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background-color 0.3s;
}
.insta-gallery__item:hover .insta-gallery__overlay {
    background-color: rgba(0, 0, 0, 0.3);
}
.insta-gallery__icon {
    color: #fff;
    font-size: 1.875rem;
    opacity: 0;
    transition: opacity 0.3s;
}
.insta-gallery__item:hover .insta-gallery__icon {
    opacity: 1;
}

/* ----------------------------------------------------------
フッター (Block: footer)
----------------------------------------------------------- */
.footer {
    color: #4b5563;
    font-size: 0.875rem;
    width: 100%;
    /* background-color: #F84F96; */
    background-image: url(../img/bg_mv.png);
    background-size: 60px auto;
}
.footer__inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}
.footer__nav-container {
    margin-bottom: 2rem;
}
.footer__company-info {
    margin-bottom: 2rem;
}
.footer__logo-image {
    height: 2rem;
    margin-bottom: 0.5rem;
}
.footer__address {
    font-size: 0.75rem;
    font-style: normal;
}
.footer__sitemap {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    list-style: none;
}
.footer__sitemap-link {
    font-size: 0.75rem;
    font-weight: 700;
}
.footer__sitemap-link:hover {
    text-decoration: underline;
    color: #f58220;
}
.footer__copyright {
    text-align: center;
    font-size: 0.75rem;
    color: #fff;
}

/* ----------------------------------------------------------
ページトップへ戻るボタン (Block: page-top)
----------------------------------------------------------- */
.page-top {
    position: fixed;
    bottom: 1.25rem;
    right: 1.25rem;
    z-index: 50;
    width: 6rem;
    transition: opacity 0.3s, visibility 0.3s;
}
.page-top:hover {
    opacity: 0.8;
}
.page-top__icon {
    color: #fff;
}
.page-top--hidden {
    opacity: 0;
    visibility: hidden;
}
.br-pc {
    display: none;
}

/* ----------------------------------------------------------
メディアクエリ (PC表示用のスタイル)
----------------------------------------------------------- */
@media (min-width: 1024px) {
    .header__logo-link img {
        height: 2.5rem;
    }
    .header__nav--pc {
        display: flex;
    }
    .header__menu-button {
        display: none;
    }
    .main-visual__image--pc {
        display: block; /* PCでは表示 */
    }
    .main-visual__image--sp {
        display: none; /* PCでは非表示 */
    }
    .section {
        padding: 3.75rem 2.5rem;
    }
    .section__title {
        font-size: 1.875rem;
    }
    .intro__image {
        max-width: 100%;
    }
    .intro__text {
        font-size: 1rem;
    }
    .intro__question {
        font-size: 1.2rem;
    }
    .campaign__sns-button:hover,
    .campaign__banner-link:hover {
        opacity: 0.8;
        transition: opacity 0.3s;
    }
    .campaign__text {
        text-align: center;
    }
    .footer__nav-container {
        display: flex;
        justify-content: space-between;
    }
    .footer__company-info {
        margin-bottom: 0;
    }
    .footer__sitemap {
        grid-template-columns: repeat(3, 1fr);
    }
    .br-sp {
        display: none;
    }
    .br-pc {
        display: block;
    }
}