/* ========== 全局 ========== */
*{
    margin:0;padding:0;box-sizing:border-box;
    font-family:'PingFang SC','Helvetica Neue',Arial,sans-serif;
}
body{
    background:#f5f5f5;
    color:#333;
    max-width:500px;
    margin:0 auto;
    position:relative;
    padding-bottom:30px;
}

/* ========== 轮播图 ========== */
.swiper-container{
    width:100%;height:375px;position:relative;overflow:hidden;
}
.swiper-wrapper{display:flex;transition:transform .3s;}
.swiper-slide{flex:0 0 100%;height:375px;}
.swiper-slide img{width:100%;height:100%;object-fit:contain;background:#fff;}

.swiper-pagination{
    position:absolute;bottom:10px;left:50%;
    transform:translateX(-50%);display:flex;gap:6px;
}
.swiper-dot{
    width:8px;height:8px;border-radius:50%;
    background:rgba(255,255,255,.5);transition:all .3s;
}
.swiper-dot.active{background:#ff5000;width:16px;border-radius:4px;}

/* ========== 商品信息 ========== */
.product-info{background:#fff;padding:15px;margin-bottom:10px;}
.price-row{display:flex;align-items:center;margin-bottom:12px;}

.current-price{color:#ff5000;font-size:28px;font-weight:bold;}
.current-price::before{content:"￥";font-size:18px;}

.original-price{
    color:#999;font-size:16px;text-decoration:line-through;margin-left:8px;
}
.original-price::before{content:"￥";}
.title{font-size:18px;font-weight:bold;line-height:1.4;margin-bottom:10px;}

/* 促销行 */
.promo-row{display:flex;align-items:center;gap:6px;margin-top:6px;}
.promo-tag{
    flex-shrink:0;
    display:inline-block;
    background:linear-gradient(90deg,#ff2c2c,#ff6b22);
    color:#fff;font-size:12px;padding:2px 6px;border-radius:2px;
}
.promo-box{
    display:inline-block;font-size:13px;padding:2px 6px;
    border-radius:4px;font-weight:600;line-height:1.2;white-space:nowrap;
}
.promo-box.drop,
.promo-box.sold{
    background:linear-gradient(90deg,#ff7e00,#ff5000);
    color:#fff;
}

/* ========== 拼单列表 ========== */
.group-buying{background:#fff;padding:15px;margin-bottom:10px;position:relative;overflow:hidden;}
.section-title{
    font-size:16px;font-weight:bold;margin-bottom:12px;position:relative;padding-left:10px;
}
.section-title::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:3px;height:16px;background:#ff5000;border-radius:2px;
}

.group-users{height:120px;position:relative;overflow:hidden;}
.user-list{position:absolute;top:0;left:0;width:100%;transition:transform .5s ease;}

.user-item{
    display:flex;align-items:center;padding:8px 0;border-bottom:1px solid #f5f5f5;
}
.user-item:last-child{border-bottom:none;}

.user-avatar{
    width:40px;height:40px;border-radius:50%;background:#f5f5f5;
    display:flex;align-items:center;justify-content:center;margin-right:10px;
    color:#999;font-size:20px;
}

.user-info{flex:1;}
.user-name{font-size:15px;font-weight:bold;margin-bottom:4px;}
.user-status{font-size:13px;color:#666;}

.countdown{
    display:inline-block;background:#ff5000;color:#fff;
    padding:1px 4px;border-radius:2px;margin-left:5px;
}

.buy-btn{
    background:linear-gradient(90deg,#ff2c2c,#ff6b22);
    color:#fff;border:none;border-radius:4px;padding:6px 15px;
    font-size:14px;font-weight:bold;cursor:pointer;
}

/* ========== 底部操作栏 ========== */
.action-bar{
    position:fixed;inset-inline:0;bottom:0;max-width:500px;margin:0 auto;
    background:#fff;display:flex;height:60px;
    box-shadow:0 -2px 10px rgba(0,0,0,.1);z-index:100;
}
.action-btn{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
    font-size:12px;color:#666;
}
.action-btn i{font-size:20px;margin-bottom:4px;}

.purchase-btn{flex:2;display:flex;}
.btn-single,
.btn-group{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:2px;border:none;cursor:pointer;
}
.btn-single{background:#ff9500;color:#fff;}
.btn-group {background:#ff5000;color:#fff;}

.btn-price{font-size:18px;font-weight:700;line-height:1;}
.btn-label{font-size:12px;line-height:1;}

/* ========== 支付弹窗 ========== */
.payment-overlay{
    position:fixed;inset:0;z-index:9999;
    background:rgba(0,0,0,.55);display:flex;align-items:center;justify-content:center;
    backdrop-filter:blur(2px);
}
.payment-modal{
    width:300px;max-width:90vw;padding:26px 28px 30px;background:#fff;
    border-radius:12px;box-shadow:0 12px 30px rgba(0,0,0,.18);
    font-size:14px;line-height:1.45;text-align:center;
}
.payment-modal h3{font-size:18px;margin:0 0 14px;color:#333;}
.payment-modal p{margin:6px 0;color:#555;word-break:break-all;}
.payment-modal .copyable{color:#ff5000;cursor:pointer;text-decoration:underline;}

.modal-buttons{margin-top:22px;display:flex;gap:12px;}
.modal-buttons button{
    flex:1;padding:8px 0;border-radius:6px;font-size:14px;cursor:pointer;border:none;
}
.confirm-btn{background:#ff5000;color:#fff;}
.cancel-btn{background:#f2f3f5;color:#333;}