/* ============ 文章列表样式（list.css） ============ */

/* 加载中文字样式 */
#article-loading,
.list-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #999;
    padding: 80px 20px;
    font-size: 16px;
    letter-spacing: 2px;
}

#list-error {
    text-align: center;
    color: #c44;
    padding: 60px 20px;
    font-size: 16px;
}
#list-error a {
    color: #3370ff;
    text-decoration: none;
}

/* 列表容器：移动端/平板单栏，pc 双栏网格（按行顺序） */
#list-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 8px 12px 44px;
    columns: 1;
}

/* ---------- 文章卡片（横向：左图右文，图片纵向占满卡片） ---------- */
.article-card {
    position: relative;
    display: flex;
    gap: 16px;
    padding: 16px;
    margin-bottom: 20px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: 20px;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
    break-inside: avoid;
    text-decoration: none;
    color: inherit;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

/* 图片区域：默认宽约 40%，纵向占满卡片高度；JS 会按 4:3 收敛调整宽度 */
.card-media {
    flex: 0 0 auto;
    width: 40%;
    max-width: 45%;
    min-width: 110px;
    align-self: stretch;
    border-radius: 12px;
    overflow: hidden;
    background: #e8eaed;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #9aa0a8;
    font-size: 14px;
    font-style: normal;
    font-weight: 700;
    letter-spacing: 2px;
}
.card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 右侧文字区 */
.card-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.card-title {
    margin: 0;
    font-size: 20px;
    font-weight: 700;
    color: #111;
    line-height: 1.35;
}
.card-desc {
    margin: 8px 0 0;
    font-size: 14px;
    line-height: 1.7;
    color: #888;
    font-style: italic;
}
/* 底部元信息行：id 靠左、时间靠右 */
.card-meta {
    margin-top: 10px;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 10px;
}
.card-id {
    font-size: 13px;
    color: #999;
    font-family: 'Courier New', monospace;
}
.card-date {
    font-size: 12.5px;
    color: #aaa;
    letter-spacing: 0.5px;
}

/* 卡片入场动画 */
@keyframes cardFadeInUp {
    from { opacity: 0; transform: translateY(26px); }
    to { opacity: 1; transform: translateY(0); }
}
.article-card {
    opacity: 0;
    animation: cardFadeInUp 0.55s ease-out forwards;
}

/* ---------- 移动端（<768px）：垂直布局，图在标题上方，无 hover ---------- */
@media (max-width: 767px) {
    #list-container {
        padding: 8px 12px 44px;
    }
    .article-card {
        flex-direction: column;
        gap: 12px;
        padding: 14px;
        margin-bottom: 18px;
        height: auto;             /* 移动端不固定高度 */
    }
    .card-media {
        align-self: auto;
        width: 100%;
        max-width: 100%;
        min-width: 0;
        aspect-ratio: 4 / 3;
    }
    .card-title {
        font-size: 19px;
    }
    .card-desc {
        font-size: 13.5px;
        flex: 0 0 auto;
        display: block;
        overflow: visible;
    }
}

/* 移动端阅读进度小栏（文章页显示时）：从下到上渐显 */
#mobile-toc-bar {
    animation: tocBarUp 0.45s cubic-bezier(0.22, 0.8, 0.36, 1) both;
}
@keyframes tocBarUp {
    from { opacity: 0; transform: translateY(120%); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------- pad 端（768-1024px）：单栏瀑布流，横向卡片 ---------- */
@media (min-width: 768px) and (max-width: 1024px) {
    #list-container {
        columns: 1;
        padding: 16px 20px 56px;
    }
    .article-card {
        gap: 20px;
        padding: 20px;
        margin-bottom: 24px;
        height: 220px;            /* 固定卡片高度，保证双栏/单栏整齐 */
    }
    .card-body {
        justify-content: space-between;
    }
    .card-title {
        font-size: 22px;
    }
    .card-desc {
        font-size: 14.5px;
        flex: 1;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
}

/* ---------- pc 端（>=1025px）：双栏网格，按行顺序排列 ---------- */
@media (min-width: 1025px) {
    #list-container {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 24px;
        padding: 20px 32px 56px;
        max-width: 1440px;   /* 横向拉宽卡片 */
        align-items: start;   /* 同排卡片高度独立，不互相撑高 */
    }
    .article-card {
        margin-bottom: 0;
        gap: 20px;
        padding: 20px;
        height: 220px;            /* 固定卡片高度 */
    }
    .card-body {
        justify-content: space-between;
    }
    .card-title {
        font-size: 22px;
    }
    .card-desc {
        font-size: 14.5px;
        flex: 1;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
}

/* ---------- hover 效果（对话气泡 + 上浮，仅 pad/pc；移动端无 hover） ---------- */
@media (min-width: 768px) {
    .article-card:hover {
        transform: translateY(-3px);
        box-shadow: 0 14px 40px rgba(0, 0, 0, 0.12);
    }
    .article-card::before,
    .article-card::after {
        position: absolute;
        right: 14px;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
        z-index: 5;
        pointer-events: none;
    }
    .article-card::before {
        content: "";
        top: 40px;
        width: 10px;
        height: 10px;
        background: rgba(0, 0, 0, 0.78);
        border-radius: 2px;
        transform: rotate(45deg);
    }
    .article-card::after {
        content: "点击跳转";
        top: 14px;
        background: rgba(0, 0, 0, 0.78);
        color: #fff;
        padding: 7px 14px;
        border-radius: 12px;
        font-size: 12.5px;
        letter-spacing: 1px;
        white-space: nowrap;
        box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
    }
    .article-card:hover::before {
        opacity: 1;
        visibility: visible;
        transform: translateX(-34px) rotate(45deg);
    }
    .article-card:hover::after {
        opacity: 1;
        visibility: visible;
        transform: translateY(3px);
    }
}

/* ---------- Bing 式搜索栏 ---------- */
#article-search {
    position: relative;
    max-width: 820px;
    margin: 0 auto 34px;
    padding: 0 12px;
}
.search-box {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 999px;
    padding: 16px 26px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: box-shadow 0.25s ease, border-color 0.25s ease;
}
.search-box:focus-within {
    box-shadow: 0 6px 28px rgba(52, 152, 219, 0.2);
    border-color: rgba(52, 152, 219, 0.55);
}
.search-icon {
    flex-shrink: 0;
    opacity: 0.75;
    width: 22px;
    height: 22px;
}
.search-box input {
    flex: 1;
    min-width: 0;
    border: none;
    outline: none;
    background: transparent;
    font-size: 17px;
    color: #333;
}
.search-box input::placeholder {
    color: #aaa;
}

/* 下拉结果面板（带动画） */
.search-results {
    position: absolute;
    top: calc(100% + 8px);
    left: 12px;
    right: 12px;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 16px;
    box-shadow: 0 16px 44px rgba(0, 0, 0, 0.16);
    max-height: 320px;
    overflow-y: auto;
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.98);
    transform-origin: top center;
    transition: opacity 0.22s ease, transform 0.22s cubic-bezier(0.25, 0.8, 0.25, 1), visibility 0.22s;
}
.search-results.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}
.search-result-item {
    display: block;
    padding: 14px 20px;
    text-decoration: none;
    color: inherit;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    cursor: pointer;
    position: relative;
    transition: background 0.18s ease;
}
.search-result-item:last-child {
    border-bottom: none;
}
.search-result-item:hover {
    background: rgba(52, 152, 219, 0.08);
}
.search-result-title {
    font-weight: 600;
    color: #222;
    font-size: 15.5px;
    line-height: 1.4;
    padding-right: 40px;
}
.search-result-desc {
    color: #888;
    font-size: 13.5px;
    line-height: 1.6;
    margin-top: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.search-result-id {
    position: absolute;
    right: 14px;
    top: 12px;
    font-size: 12px;
    color: #b0b4bb;
    font-family: 'Courier New', monospace;
}
.search-result-empty {
    padding: 16px 18px;
    text-align: center;
    color: #999;
    font-size: 14px;
}

/* 关键词高亮 */
mark {
    background: #ffe58a;
    color: inherit;
    border-radius: 3px;
    padding: 0 2px;
}

/* 搜索结果点击后的目标卡片闪烁 */
.article-card.search-target {
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.55);
    transition: box-shadow 0.3s ease;
}