/* public/css/case.css */

/* ========== Banner ========== */
.banner-v1 {
    width: 100%;
    height: 900px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
}

.banner-bg-v1 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-content-v1 {
    position: relative;
    z-index: 2;
    padding: 0 80px 80px 0;
    max-width: 1400px;
    width: 100%;
    text-align: right;
}

.banner-content-v1 h1 {
    font-size: 40px;
    font-weight: 700;
    color: #333;
    margin-bottom: 8px;
    letter-spacing: 2px;
}

.banner-content-v1 h1 .highlight-v1 {
    color: #b71c1c;
}

.banner-content-v1 h2 {
    font-size: 40px;
    font-weight: 400;
    color: #333;
    margin-bottom: 8px;
}

.banner-content-v1 h3 {
    font-size: 40px;
    font-weight: 700;
    color: #b71c1c;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.banner-content-v1 .en-subtitle-v1 {
    font-size: 22px;
    color: black;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.banner-line-v1 {
    margin-top: 10px;
}

.banner-line-v1 img {
    height: 40px;
    object-fit: contain;
}

/* ========== 合作案例主体内容 ========== */
.case-main {
    background: #f5f5f5;
}

/* 标题区 */
.case-header-section {
    max-width: 1600px;
    margin: 0 auto;
    padding: 60px 40px 0;
}

.case-header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.case-title {
    display: flex;
    align-items: center;
    gap: 16px;
}

.case-title-bar {
    width: 6px;
    height: 40px;
    background: #b71c1c;
    flex-shrink: 0;
}

.case-title-text h2 {
    font-size: 28px;
    font-weight: 700;
    color: #b71c1c;
    margin-bottom: 2px;
}

.case-title-text p {
    font-size: 14px;
    color: #999;
    letter-spacing: 2px;
    font-style: italic;
}

.case-tabs {
    display: flex;
    align-items: center;
    gap: 32px;
}

.case-tab {
    font-size: 16px;
    color: #333;
    cursor: pointer;
    padding-bottom: 8px;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
    white-space: nowrap;
}

.case-tab:hover {
    color: #b71c1c;
}

.case-tab.active {
    color: #b71c1c;
    border-bottom-color: #b71c1c;
}

.case-header-divider {
    height: 1px;
    background: #ddd;
}

/* 案例卡片网格 */
.case-grid-section {
    max-width: 1600px;
    margin: 0 auto;
    padding: 60px 40px 80px;
}

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

.case-card {
    cursor: pointer;
}

.case-card-img {
    position: relative;
    overflow: hidden;
    /* border-radius: 8px; */
    background: #e0e0e0;
    aspect-ratio: 4 / 3;
    cursor: pointer;
}

.case-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s;
}

.case-card-img:hover img {
    transform: scale(1.05);
}

.case-card-caption {
    /* margin-top: 12px; */
	font-size: 18px;
	color: #333;
	line-height: 1.5;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
	background-color: #e0e0e0;
	padding: 15px;
}
.case-card-img:hover .case-card-caption {
	background-color: darkred;
	color: white;
}
/* ========== 图片弹框 ========== */
.case-lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.case-lightbox.active {
    display: flex;
}

.case-lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-lightbox-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
}

.case-lightbox-close {
    position: fixed;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: #fff;
    cursor: pointer;
    z-index: 10000;
    line-height: 1;
    transition: transform 0.3s;
}

.case-lightbox-close:hover {
    transform: scale(1.2);
}

/* ========== 响应式 ========== */

/* 平板及以下 ≤1200px */
@media screen and (max-width: 1200px) {
    .banner-content-v1 {
        padding-right: 40px;
        padding-bottom: 60px;
    }

    .case-header-section,
    .case-grid-section {
        padding-left: 30px;
        padding-right: 30px;
    }

    .case-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 平板竖屏 ≤992px */
@media screen and (max-width: 992px) {
    .banner-content-v1 {
        padding-right: 30px;
        padding-bottom: 50px;
    }

    .banner-content-v1 h1 {
        font-size: 32px;
    }

    .banner-content-v1 h2,
    .banner-content-v1 h3 {
        font-size: 28px;
    }

    .banner-content-v1 .en-subtitle-v1 {
        font-size: 16px;
    }

    .banner-line-v1 img {
        height: 30px;
    }

    .case-header-top {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }

    .case-tabs {
        flex-wrap: wrap;
        gap: 20px;
    }

    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 手机横屏 ≤768px */
@media screen and (max-width: 768px) {
    .banner-content-v1 {
        padding-right: 20px;
        padding-bottom: 40px;
    }

    .banner-content-v1 h1 {
        font-size: 26px;
    }

    .banner-content-v1 h2,
    .banner-content-v1 h3 {
        font-size: 22px;
    }

    .banner-content-v1 .en-subtitle-v1 {
        font-size: 14px;
    }

    .banner-line-v1 img {
        height: 24px;
    }

    .case-header-section,
    .case-grid-section {
        padding-left: 20px;
        padding-right: 20px;
    }

    .case-title-text h2 {
        font-size: 22px;
    }

    .case-tab {
        font-size: 14px;
    }

    .case-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

/* 手机竖屏 ≤480px */
@media screen and (max-width: 480px) {
    .banner-v1 {
        height: 380px;
    }

    .banner-content-v1 {
        padding-right: 16px;
        padding-bottom: 30px;
    }

    .banner-content-v1 h1 {
        font-size: 22px;
    }

    .banner-content-v1 h2,
    .banner-content-v1 h3 {
        font-size: 18px;
    }

    .banner-content-v1 .en-subtitle-v1 {
        font-size: 12px;
    }

    .banner-line-v1 img {
        height: 18px;
    }

    .case-grid {
        grid-template-columns: 1fr;
    }

    .case-tabs {
        gap: 16px;
    }
}