/* 产品卡片组件样式 - 水平重叠卡片效果 */

/* 新增：无缝横排 Flex 布局（不重叠） */
:root { --card-content-top: 20%; }
.features-groups-wrapper { 
    width: 100%; 
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}
.category-tabs { display: flex; gap: 10px; }
.btn-category { border-radius: 20px; padding: 0 0; font-weight: 500; border: 1px solid transparent; transition: all .2s ease; }
.btn-category.active { font-weight: 700; }

/* 按钮配色（与分组相呼应） */
.btn-category[data-group="reagent"] { background: #4f46e5; color: #fff; border-color: #4f46e5; }
.btn-category[data-group="protein"] { background: #10b981; color: #fff; border-color: #10b981; }
.btn-category[data-group="storage"] { background: #06b6d4; color: #fff; border-color: #06b6d4; }

.btn-category:hover { filter: brightness(0.95); transform: translateY(-1px); }
.btn-category.active { box-shadow: 0 6px 16px rgba(0,0,0,0.15); filter: brightness(0.92); }

.flex-cards {
    display: flex;
    width: 100%;
    height: 450px;
    gap: 0; /* 无缝接触 */
}

.flex-card {
    /* 默认平均分配，确保在JS尚未运行时也可见 */
    flex: 1 0 0;
    min-width: 0;
    /* JS 运行后将根据悬停动态设置 flex-basis */
    height: 100%;
    position: relative;
    overflow: hidden;
    border-radius: 0; /* 长方形，无圆角 */
    box-shadow: 0 0 0 rgba(0, 0, 0, 0.1);
    transition: flex-basis .3s ease, transform .3s ease, box-shadow .3s ease;
    cursor: pointer;
}

/* 悬停不改变垂直位置，保持与未激活卡片同一基线 */
.flex-card:hover { transform: none; box-shadow: 0 20px 40px rgba(0,0,0,0.15); }

/* 明确禁用任何可能的位移（防止旧样式影响） */
.flex-card, .flex-card:hover, .flex-card:active { top: 0; }

/* 复用原有图片/内容样式，适配 flex 卡片 */
.flex-card .horizontal-card-image { position: relative; width: 100%; height: 100%; overflow: hidden; }
.flex-card .horizontal-card-image img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.flex-card .horizontal-card-image i { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 6rem; color: rgba(255,255,255,0.9); }

/* 类别背景：即使图片加载失败也能看到底色 */
.flex-card[data-category="reagent"] .horizontal-card-image { background: linear-gradient(135deg, #4f46e5, #7c3aed); }
.flex-card[data-category="protein"] .horizontal-card-image { background: linear-gradient(135deg, #10b981, #059669); }
.flex-card[data-category="storage"] .horizontal-card-image { background: linear-gradient(135deg, #06b6d4, #0ea5e9); }

.flex-card .horizontal-card-content {
    position: absolute; left: 0; right: 0; top: 20% !important; bottom: auto !important; padding: 0 20px; display: flex; flex-direction: column;
    justify-content: flex-start; align-items: flex-start; background: transparent; z-index: 3;
    transform: translateY(0) !important;
}

/* 确保激活和悬停状态的文本位置也保持一致 */
.flex-card:hover .horizontal-card-content,
.flex-card.active .horizontal-card-content,
.flex-card.is-active .horizontal-card-content {
    top: 20% !important;
    bottom: auto !important;
    transform: translateY(0) !important;
}

.flex-card .horizontal-card-content h4 { color: #fff; margin-bottom: 10px; font-size: 1.4rem; font-weight: 500; text-shadow: 0 2px 10px rgba(0,0,0,0.3); }
.flex-card .horizontal-card-content p { color: rgba(255,255,255,0.95); line-height: 1.1; margin-bottom: 15px; text-shadow: 0 1px 5px rgba(0,0,0,0.3); font-size: 1.1rem; }

/* 激活/悬停：文本改为黑色，去除阴影 */
.flex-card:hover .horizontal-card-content h4,
.flex-card.active .horizontal-card-content h4,
.flex-card.is-active .horizontal-card-content h4,
.flex-card:hover .horizontal-card-content p,
.flex-card.active .horizontal-card-content p,
.flex-card.is-active .horizontal-card-content p {
    color: #000 !important;
    text-shadow: none !important;
}

/* 类别颜色覆盖（用于无图图标或轻遮罩） */
.flex-card[data-category="reagent"] .horizontal-card-image i { background: linear-gradient(135deg, rgba(79,70,229,0.35), rgba(124,58,237,0.35)); }
.flex-card[data-category="protein"] .horizontal-card-image i { background: linear-gradient(135deg, rgba(16,185,129,0.35), rgba(5,150,105,0.35)); }
.flex-card[data-category="storage"] .horizontal-card-image i { background: linear-gradient(135deg, rgba(6,182,212,0.35), rgba(14,165,233,0.35)); }

@media (max-width: 768px) {
    /* 确保整个容器在移动端可见 */
    .features-groups-wrapper {
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
        width: 100% !important;
    }
    
    .flex-cards { 
        flex-direction: column !important; 
        height: auto !important; 
        gap: 16px !important;
        display: flex !important;
        visibility: visible !important;
        opacity: 1 !important;
        width: 100% !important;
    }
    .flex-card { 
        width: 100% !important; 
        height: 360px !important; 
        position: relative !important;
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
    }
    /* 确保移动端图片正确显示 */
    .flex-card .horizontal-card-image { 
        position: relative; 
        width: 100%; 
        height: 100%; 
        overflow: hidden; 
        display: block;
    }
    .flex-card .horizontal-card-image img { 
        position: absolute; 
        inset: 0; 
        width: 100%; 
        height: 100%; 
        object-fit: cover; 
        object-position: center; 
        display: block;
    }
    .flex-card .horizontal-card-image i { 
        position: absolute; 
        inset: 0; 
        display: flex; 
        align-items: center; 
        justify-content: center; 
        font-size: 6rem; 
        color: rgba(255,255,255,0.9); 
    }
    /* 强制图片在移动端显示 */
    .flex-card .horizontal-card-image img {
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
        position: absolute !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        width: 100% !important;
        height: 100% !important;
        object-fit: cover !important;
        object-position: center !important;
        z-index: 1 !important;
        background-color: transparent !important;
    }
    /* 确保图片容器在移动端可见 */
    .flex-card .horizontal-card-image {
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
        position: relative !important;
        width: 100% !important;
        height: 100% !important;
        overflow: hidden !important;
        min-height: 200px !important;
    }
    /* 确保flex-card在移动端有正确的高度 */
    .flex-card {
        min-height: 360px !important;
    }
}


/* Recommended Products Section Header and Submodule Buttons */
.recommended-products-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 20px;
}

.recommended-products-header .section-title {
    margin-bottom: 0.5rem;
}

.submodule-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn-submodule {
    border-radius: 20px;
    padding: 8px 20px;
    font-weight: 500;
    color: white;
    transition: all 0.3s ease;
    background-color: var(--bs-primary); /* Default color */
    border-color: var(--bs-primary); /* Default color */
}

.btn-submodule:hover {
    opacity: 0.8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn-submodule.active {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
    font-weight: 700;
}

/* 响应式设计 - 50%宽度卡片布局 */
@media (max-width: 1200px) {
    .horizontal-card {
        width: 50%;
        height: 390px;
    }
    
    .horizontal-card.card-1 {
        left: 0;
    }
    
    .horizontal-card.card-2 {
        left: 25%;
    }
    
    .horizontal-card.card-3 {
        left: 50%;
    }
}

@media (max-width: 992px) {
    .horizontal-card {
        width: 50%;
        height: 360px;
    }
    
    .horizontal-card.card-1 {
        left: 0;
    }
    
    .horizontal-card.card-2 {
        left: 25%;
    }
    
    .horizontal-card.card-3 {
        left: 50%;
    }
}

@media (max-width: 768px) {
    .horizontal-overlapping-container {
        height: auto;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }
    
    .horizontal-card {
        position: relative;
        width: 90%;
        max-width: 400px;
        height: 360px;
        left: auto !important;
        top: auto !important;
        z-index: auto !important;
    }
    
    .horizontal-card:hover,
    .horizontal-card.active {
        transform: translateY(-10px) scale(1.02);
    }
    
    .horizontal-card-content {
        height: 140px;
        padding: 15px;
        top: 20% !important;
        padding-top: 0 !important;
    }
    
    .horizontal-card-content h4 {
        font-size: 1.3rem;
    }
    
    .horizontal-card-content p {
        font-size: 1rem;
        -webkit-line-clamp: 2;
        line-clamp: 2;
    }
    
    /* 确保移动端产品展示区域的文字也更大 */
    .flex-card .horizontal-card-content h4 {
        font-size: 1.3rem !important;
    }
    
    .flex-card .horizontal-card-content p {
        font-size: 1rem !important;
    }

    .recommended-products-header {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }

    .submodule-buttons {
        width: 100%;
        justify-content: flex-start;
    }

    .recommended-products-header .section-title,
    .recommended-products-header .section-subtitle {
        text-align: left;
        margin-left: 0;
        margin-right: auto;
    }
}

/* 卡片动画效果 */
@keyframes cardSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.horizontal-card {
    animation: cardSlideIn 0.6s ease-out;
}

.horizontal-card.card-1 {
    animation-delay: 0.1s;
}

.horizontal-card.card-2 {
    animation-delay: 0.2s;
}

.horizontal-card.card-3 {
    animation-delay: 0.3s;
}