/* ==========================================================================
   Doing++ · 首页「最新资讯」区块（对齐腾讯官网 section-happening）
   --------------------------------------------------------------------------
   依赖：doingxx.css 的 --dx-* 变量（--dx-brand / --dx-text-1 / --dx-border 等）
   位置：content/templates/doingxx/css/news.css，在 header.php 中于 doingxx.css 之后引入
   深色模式：仅使用 CSS 变量 + 少量 [data-theme="dark"] 覆盖，自动跟随主题
   ========================================================================== */

/* ---------- 区块容器：复用 .dx-section 的宽度与留白 ---------- */
.dx-news {
    /* 腾讯内容宽 1160，本站 .dx-section 为 1180，取 1160 更接近原版比例 */
    --dxn-gap: 24px;
    --dxn-radius: 10px;
    /* 标题/日期颜色：对齐腾讯（纯黑标题、#64676a 日期），深色模式单独覆盖 */
    --dxn-title: #000;
    --dxn-date: #64676a;
}

/* ---------- 标题行 ---------- */
.dx-news-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 32px;
}

.dx-news-head h2 {
    margin: 0;
    font-size: 24px;
    font-weight: 600;
    line-height: 1.35;
    color: var(--dxn-title);
    letter-spacing: .25px;
}

/* 「浏览更多」：悬停下划线由左向右展开，箭头同步加深 */
.dx-news-more {
    position: relative;
    display: inline-flex;
    align-items: center;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.6;
    color: var(--dx-brand);
    text-decoration: none;
    white-space: nowrap;
    transition: color .3s ease-out;
}

.dx-news-more-text {
    position: relative;
    display: inline-block;
}

.dx-news-more-text::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 1px;
    background-color: currentColor;
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform .25s ease-in-out;
    transition-delay: .15s;
}

.dx-news-more-ico {
    width: 16px;
    height: 16px;
    margin-left: 10px;
    fill: currentColor;
    transition: fill .3s ease-out;
}

.dx-news-more:hover {
    color: var(--dx-brand-hover);
}

.dx-news-more:hover .dx-news-more-text::after {
    transform: scaleX(1);
    transform-origin: bottom left;
    transition-delay: .15s;
}

/* ---------- 栅格：大卡 6 列，两张小卡各 3 列（共 12 列） ---------- */
.dx-news-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--dxn-gap);
    align-items: start;
}

.dx-news-item {
    grid-column: span 3;
    min-width: 0;
}

.dx-news-hero {
    grid-column: span 6;
}

/* ---------- 图片容器：圆角 + 比例锁定 + hover ---------- */
.dx-news .dx-news-media {
    position: relative;
    display: block;
    overflow: hidden;
    border-radius: var(--dxn-radius);
    background: var(--dx-bg-soft);
    /* 修 iOS 上圆角被图片盖住 */
    -webkit-mask-image: -webkit-radial-gradient(#fff, #000);
}

/* 用 padding-top 撑比例，避免 flex/grid 下高度塌陷 */
.dx-news .dx-news-media.is-169 { padding-top: 56.2%; }   /* 16:9 */
.dx-news .dx-news-media.is-square { padding-top: 100%; } /* 1:1  */

.dx-news .dx-news-media img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform .4s ease-out;
}

/* 无封面时的占位块 */
.dx-news .dx-news-noimg {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    font-weight: 600;
    color: var(--dx-brand);
    background: var(--dx-brand-light);
    user-select: none;
}

/* hover：轻微放大 + 淡蒙层 */
.dx-news .dx-news-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, .15);
    opacity: 0;
    pointer-events: none;
    transition: opacity .4s ease-out;
}

.dx-news .dx-news-media:hover img {
    transform: scale(1.03);
}

.dx-news .dx-news-media:hover::after {
    opacity: 1;
}

/* ---------- 标题与日期 ---------- */
.dx-news .dx-news-title {
    margin: 16px 0 8px;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    letter-spacing: .25px;
}

.dx-news .dx-news-title a {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--dxn-title);
    text-decoration: none;
    transition: color .3s ease-out;
}

.dx-news .dx-news-title a:hover {
    color: var(--dx-brand);
}

.dx-news .dx-news-title.is-hero {
    font-size: 24px;
    line-height: 1.2;
}

.dx-news .dx-news-date {
    font-size: 12px;
    line-height: 18px;
    font-weight: 300;
    color: var(--dxn-date);
}

/* ==========================================================================
   响应式
   ≥993：6 / 3 / 3 并排（与腾讯 ≥992 一致）
   769–992：大卡独占 12 列，两小卡各 6 列（避免小卡过窄，图上文下）
   ≤768：全部单列，小卡改为「图左文右」（与腾讯移动端一致）
   ========================================================================== */

@media (max-width: 992px) {
    .dx-news-head {
        margin-bottom: 24px;
    }
    .dx-news-head h2 {
        font-size: 22px;
    }

    /* 小卡先定义 span 6，大卡再用更高特异性覆盖为 span 12（顺序不能反） */
    .dx-news .dx-news-item {
        grid-column: span 6;
    }
    .dx-news .dx-news-item.dx-news-hero {
        grid-column: span 12;
        margin-bottom: 8px;
    }
    .dx-news .dx-news-title.is-hero {
        font-size: 20px;
        line-height: 1.35;
    }

    /* 该区间小卡也统一为「图上文下」，两张并排 */
    .dx-news .dx-news-item:not(.dx-news-hero) {
        display: block;
    }
    .dx-news .dx-news-item:not(.dx-news-hero) .dx-news-title {
        margin: 12px 0 6px;
    }
}

@media (max-width: 768px) {
    .dx-news {
        --dxn-gap: 16px;
    }
    .dx-news-head h2 {
        font-size: 20px;
    }
    .dx-news-more {
        font-size: 15px;
    }

    .dx-news .dx-news-item,
    .dx-news .dx-news-item.dx-news-hero {
        grid-column: span 12;
    }

    /* 小卡：图左文右（与腾讯 <768px 一致）
       用两列 + 三行：图片跨全部行高，标题/日期依次落在右侧 */
    .dx-news .dx-news-item:not(.dx-news-hero) {
        display: grid;
        grid-template-columns: 120px minmax(0, 1fr);
        grid-template-rows: auto auto 1fr;
        grid-template-areas:
            "media title"
            "media date"
            "media .";
        column-gap: 16px;
        align-content: start;
        align-items: start;
    }

    .dx-news .dx-news-item:not(.dx-news-hero) .dx-news-media {
        grid-area: media;
    }

    .dx-news .dx-news-item:not(.dx-news-hero) .dx-news-title {
        grid-area: title;
        margin: 0 0 6px;
        font-size: 16px;
        line-height: 1.4;
    }

    .dx-news .dx-news-item:not(.dx-news-hero) .dx-news-date {
        grid-area: date;
    }

    /* 原先这里给标题/日期右侧留 64px，避开站点固定悬浮工具栏
       （.side-toolbar，right:20px / 宽 40px）。按「手机上不必预留、
       按钮可以盖在文字上」的要求，这条规则整体取消，文字回归满宽。 */

    /* 大卡标题也收一点，避免小屏过大 */
    .dx-news .dx-news-title.is-hero {
        font-size: 19px;
    }
}

/* ---------- 深色模式微调 ---------- */
/* --dx-* 变量已在 doingxx-dark-fix.css 里随主题切换，这里只处理图片占位底色 */
[data-theme="dark"] .dx-news {
    --dxn-title: rgba(255, 255, 255, .92);
    --dxn-date: rgba(255, 255, 255, .45);
}

[data-theme="dark"] .dx-news .dx-news-media {
    background: rgba(255, 255, 255, .06);
}

[data-theme="dark"] .dx-news .dx-news-noimg {
    background: rgba(0, 82, 217, .18);
    color: rgba(255, 255, 255, .85);
}

/* ---------- 无障碍：尊重减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
    .dx-news-media img,
    .dx-news-media::after,
    .dx-news-more-text::after {
        transition: none;
    }
}