/*
 * クーポン詳細ページ用スタイル。
 * 詳細情報、画像カルーセル、同エリアおすすめクーポンをまとめる。
 */

/* クーポン詳細の外枠 */
.coupon-detail {
    margin: 40px 16px;
}

.coupon-detail h2 {
    text-align: left;
    margin-left: 24px;
}

/* 購入アクション */
.coupon-detail .btn-group {
    display: flex;
    justify-content: flex-start;
    gap: 12px;
    margin-bottom: 24px;
}

.coupon-detail .btn-group button,
.coupon-detail-buy-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #fde68a;
    border: none;
    border-radius: 24px;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: bold;
    color: #555;
    cursor: pointer;
    text-decoration: none;
}

/* 画像カルーセルと商品情報の2カラム */
.coupon-detail .detail-body {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    justify-content: flex-start;
}

.coupon-detail .carousel-wrapper {
    flex: 1;
    min-width: 320px;
    max-width: 600px;
}

.coupon-detail .info-panel {
    flex: 1;
    min-width: 280px;
    max-width: 350px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.coupon-detail .info-panel .tab {
    align-self: flex-start;
    padding: 6px 80px;
    border: 2px solid var(--site-color-brand);
    border-radius: 9999px;
    color: var(--site-color-brand);
    font-weight: bold;
    font-size: 14px;
}

.coupon-detail .store-image {
    margin: 8px 0 14px;
}

.coupon-detail .store-image img {
    width: 100%;
    max-height: 180px;
    object-fit: cover;
    border-radius: 8px;
    display: block;
}

/* 詳細ページで画像が未設定・未配置のときの代替表示 */
.coupon-detail-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    box-sizing: border-box;
    width: 100%;
    border: 1px dashed #d9c6b1;
    border-radius: 8px;
    background: linear-gradient(135deg, #fff8f0 0%, #ffffff 100%);
    color: var(--site-color-brand);
    text-align: center;
}

.coupon-detail-placeholder__title {
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.04em;
}

.coupon-detail-placeholder__text {
    color: var(--site-color-muted);
    font-size: 13px;
    font-weight: 700;
}

.coupon-detail-placeholder--main {
    height: 100%;
    min-height: 340px;
}

.coupon-detail-placeholder--thumb {
    height: 80px;
}

.coupon-detail-placeholder--thumb .coupon-detail-placeholder__text {
    font-size: 11px;
}

.coupon-detail-placeholder--store {
    min-height: 120px;
}

.coupon-detail .info-panel .info {
    line-height: 1.6;
    color: #333;
    font-size: 14px;
}

/* Swiper本体とサムネイル */
.swiper {
    position: relative;
}

.swiper-button-prev,
.swiper-button-next {
    color: #1e40af;
}

.swiper-main {
    width: 100%;
    aspect-ratio: 16 / 9;
    min-height: 340px;
    margin-bottom: 12px;
}

.swiper-main .swiper-slide {
    display: flex;
    justify-content: center;
    align-items: center;
}

.swiper-main .swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 8px;
    display: block;
}

.swiper-thumbs {
    width: 100%;
    height: 80px;
}

.swiper-thumbs .swiper-slide {
    width: 20%;
    opacity: 0.4;
}

.swiper-thumbs .swiper-slide-thumb-active {
    opacity: 1;
}

.swiper-thumbs .swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 4px;
}

/* 同じエリアのおすすめクーポン */
.recommend-section {
    max-width: 1200px;
    margin: 60px auto;
}

.recommend-separator {
    border: none;
    border-top: 2px solid var(--site-color-brand);
    margin-bottom: 16px;
}

.recommend-title {
    font-size: 18px;
    color: #333;
    margin-bottom: 24px;
}

.recommend-grid {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(4, 1fr);
}

a.recommend-item {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: box-shadow 0.2s, transform 0.2s;
}

a.recommend-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.recommend-grid a.recommend-item {
    width: 100%;
}

.card-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 3 / 2;
    overflow: hidden;
    background: #fff8f0;
}

.card-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.coupon-detail-placeholder--recommend {
    height: 100%;
    border-radius: 0;
}

.recommend-info {
    padding: 12px;
    font-size: 13px;
    line-height: 1.4;
    color: #333;
}

.recommend-info .price {
    font-weight: bold;
    margin: 4px 0;
}

.recommend-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px 12px;
}

.icons {
    display: flex;
    gap: 8px;
}

.icon-btn {
    border: none;
    background: none;
    font-size: 16px;
    cursor: pointer;
}

.icon-btn.heart {
    color: #e74c3c;
}

.icon-btn.share {
    color: #555;
}

@media (max-width: 1024px) {
    .recommend-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .recommend-grid {
        grid-template-columns: 1fr;
    }
}