/**
 * Projects Slider 样式
 * 根据卡片样式参考图(card-style.jpeg)设计
 */

/* 滑块容器 */
.projectslider-container {
    position: relative;
    margin: 0 auto;
    overflow: hidden;
    z-index: 1;
    padding: 50px 0; /* 添加上下内边距，为3D效果提供空间 */
}

/* 卡片设计 */
.projectslider-card {
    position: relative;
    width: 100%;
    /* 严格设置高度为宽度的2/3，实现3:2的比例 */
    height: 0;
    padding-bottom: 66.67%; /* 2/3 = 66.67% */
    overflow: hidden;
    border-radius: 0; /* 去掉圆角 */
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15); /* 简化阴影 */
    transition: transform 0.3s ease, box-shadow 0.3s ease; /* 只对必要属性进行过渡 */
    cursor: pointer;
    transform: translateZ(0); /* 强制启用硬件加速 */
    will-change: transform, box-shadow; /* 告知浏览器这些属性将发生变化 */
    backface-visibility: hidden; /* 隐藏背面 */
    display: block; /* 确保块级显示 */
    /* 确保子元素不会影响3:2比例 */
    box-sizing: border-box;
}

/* 鼠标悬停时增强点击感 - 仅对激活卡片生效 */
.swiper-slide-active .projectslider-card:hover {
    transform: translateY(-5px) scale(1.03); /* 减小变化幅度以提高性能 */
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.25); /* 简化阴影 */
}

/* 非激活卡片禁止悬停效果和手型指针 */
.swiper-slide:not(.swiper-slide-active) .projectslider-card {
    cursor: default; /* 改为默认指针 */
    transition: none; /* 禁用过渡动画来提高性能 */
    transform: translateZ(0) !important; /* 启用硬件加速但禁止变形 */
}

/* 中间激活卡片的样式 */
.swiper-slide-active .projectslider-card {
    transform: translateZ(0) scale(1.03); /* 使用硬件加速并缩小3D变形幅度 */
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3); /* 简化阴影以提高性能 */
}

/* 卡片图像 */
.projectslider-card-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    /* 确保图片容器完全覆盖卡片区域 */
    bottom: 0;
    right: 0;
    overflow: hidden;
}

.projectslider-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94); /* 使用强调的缓动函数 */
    filter: brightness(0.95); /* 默认略微降低亮度 */
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: block; /* 确保图片正确显示 */
    max-width: none; /* 防止最大宽度限制影响比例 */
}

.projectslider-card:hover .projectslider-card-image img {
    transform: scale(1.08); /* 增大缩放比例 */
    filter: brightness(1.05); /* 悬停时增加亮度 */
}

/* 激活卡片的图片效果 */
.swiper-slide-active .projectslider-card-image img {
    filter: brightness(1.1) contrast(1.05); /* 增强中心卡片的图像质量 */
}

/* 卡片渐变覆盖效果 */
.projectslider-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0) 40%, rgba(0,0,0,0.6) 75%, rgba(0,0,0,0.85) 100%);
    z-index: 2;
    transition: all 0.5s ease; /* 修改为all以确保所有属性进行过渡 */
    opacity: 0.9; /* 默认状态下的不透明度 */
    transform: scale(1); /* 添加初始变换值 */
}

/* 悬停时增强渐变效果 */
.projectslider-card:hover .projectslider-card-overlay {
    opacity: 1;
    transform: scale(1.05); /* 跟随卡片缩放 */
}

/* 激活卡片的覆盖效果 */
.swiper-slide-active .projectslider-card-overlay {
    background: linear-gradient(to bottom, rgba(0,0,0,0) 40%, rgba(0,0,0,0.65) 80%, rgba(0,0,0,0.9) 100%);
    opacity: 1;
    transform: scale(1.05); /* 与卡片缩放保持一致 */
}

/* 卡片内容 */
.projectslider-card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 20px 25px; /* 调整内边距以适应更性化的高度 */
    z-index: 3;
    transition: transform 0.3s ease, opacity 0.3s ease; /* 简化过渡属性和时间 */
    transform: translateY(0) translateZ(0); /* 添加硬件加速 */
    opacity: 0.9;
    will-change: transform, opacity; /* 提高性能 */
}

/* 只允许激活卡片的内容区域变化 */
.swiper-slide-active .projectslider-card:hover .projectslider-card-content {
    transform: translateY(-5px) translateZ(0); /* 减小移动距离并添加硬件加速 */
    opacity: 1;
}

/* 禁止非激活卡片的内容区域变化 */
.swiper-slide:not(.swiper-slide-active) .projectslider-card:hover .projectslider-card-content {
    transform: none;
    opacity: 0.9;
}

/* 激活卡片的内容区域效果 */
.swiper-slide-active .projectslider-card-content {
    transform: translateY(-3px) translateZ(0); /* 减小移动距离并添加硬件加速 */
    opacity: 1;
}

/* 滑动过渡动画 - 简化阴影以提高性能 */
.swiper-container-3d .swiper-slide-shadow-left,
.swiper-container-3d .swiper-slide-shadow-right {
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0)); /* 减轻阴影 */
    opacity: 0.3; /* 降低不透明度 */
}

/* 保证视差运动的丰富性 */
.swiper-container {
    width: 100%;
    height: 100%;
    overflow: visible; /* 允许内容溢出，以实现3D效果 */
}

/* 确保幻灯片保持正确比例 */
.swiper-slide {
    width: 320px; /* 固定宽度 */
    height: auto; /* 自动高度 */
    box-sizing: border-box; /* 确保盒模型计算准确 */
}

/* 强制卡片維持固定宽高比 */
.swiper-slide .projectslider-card {
    width: 100%;
    height: 0;
    padding-bottom: 66.67%; /* 2/3 = 66.67% */
    margin: 0; /* 移除可能影响比例的边距 */
    box-sizing: border-box; /* 确保盒模型计算准确 */
}

/* 卡片分类 */
.projectslider-card-category {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
    background-color: rgba(255, 255, 255, 0.2);
    padding: 5px 12px;
    border-radius: 4px;
    backdrop-filter: blur(5px);
}

/* 卡片标题 */
.projectslider-card-title {
    font-size: 24px;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 10px 0;
    line-height: 1.3;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* 位置分类 */
.projectslider-card-location {
    display: inline-block;
    font-size: 13px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    margin: 0 0 10px 0; /* 调整上边距，与标题更贴合 */
    padding: 4px 10px;
    border-radius: 4px;
    background-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(3px);
}

/* 卡片摘要 */
.projectslider-card-excerpt {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* 导航按钮 */
.projectslider-button-next,
.projectslider-button-prev {
    position: absolute;
    top: 50%;
    width: 50px;
    height: 50px;
    margin-top: -25px;
    z-index: 10;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.projectslider-button-next {
    right: 20px;
}

.projectslider-button-prev {
    left: 20px;
}

.projectslider-button-next:hover,
.projectslider-button-prev:hover {
    background-color: rgba(0, 0, 0, 0.7);
    transform: scale(1.1);
}

.projectslider-button-next svg,
.projectslider-button-prev svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* 分页 */
.projectslider-pagination {
    position: relative;
    bottom: 0;
    left: 0;
    width: 100%;
    text-align: center;
    z-index: 10;
    margin-top: 30px; /* 增加与卡片的距离 */
    padding: 10px 0; /* 增加上下内边距 */
}

.projectslider-pagination .swiper-pagination-bullet {
    width: 8px;
    height: 8px;
    display: inline-block;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0.8;
    transition: transform 0.2s ease, background 0.2s ease; /* 优化过渡效果 */
    margin: 0 5px; /* 减小间距 */
}

.projectslider-pagination .swiper-pagination-bullet-active {
    opacity: 1;
    background: #000000;
    transform: scale(1.2); /* 缩小缩放倍率 */
    box-shadow: 0 0 3px rgba(0, 0, 0, 0.2); /* 减小阴影 */
}

/* 无图像占位符 */
.projectslider-no-image-placeholder {
    width: 100%;
    height: 100%;
    background-color: #2a3f54;
    display: flex;
    align-items: center;
    justify-content: center;
}

.projectslider-no-image-placeholder:after {
    content: '无图像';
    color: rgba(255, 255, 255, 0.5);
    font-size: 20px;
}

/* 无文章消息 */
.projectslider-no-posts {
    width: 100%;
    padding: 50px 20px;
    text-align: center;
    font-size: 18px;
    color: #888;
}

/* 链接样式 */
.projectslider-card-link {
    display: block;
    width: 100%;
    height: 100%;
    text-decoration: none;
}

/* 响应式设计 */
@media screen and (max-width: 1024px) {
    .projectslider-card {
        height: 350px;
    }
    
    .projectslider-card-title {
        font-size: 20px;
    }
}

@media screen and (max-width: 767px) {
    .projectslider-card {
        height: 300px;
    }
    
    .projectslider-card-title {
        font-size: 18px;
    }
    
    .projectslider-card-content {
        padding: 20px;
    }
    
    .projectslider-button-next,
    .projectslider-button-prev {
        width: 40px;
        height: 40px;
        margin-top: -20px;
    }
}

@media screen and (max-width: 480px) {
    .projectslider-card {
        height: 250px;
    }
    
    .projectslider-card-title {
        font-size: 16px;
    }
    
    .projectslider-card-category {
        font-size: 12px;
        padding: 4px 10px;
    }
    
    .projectslider-card-content {
        padding: 15px;
    }
}