/* ============================================================
   JueJin Style — 仿掘金 Typecho 主题
   配色参照 juejin.cn：品牌蓝 #1e80ff / 背景 #f4f5f5
   ============================================================ */

:root {
    --jj-primary: #1e80ff;
    --jj-primary-hover: #1171ee;
    --jj-primary-light: #eaf2ff;
    --jj-bg: #f4f5f5;
    --jj-card: #ffffff;
    --jj-border: #e4e6eb;
    --jj-text: #252933;
    --jj-text-2: #515767;
    --jj-text-3: #8a919f;
    --jj-green: #26aa78;
    --jj-red: #ff5c5c;
    --jj-radius: 4px;
    --jj-shadow: 0 1px 2px rgba(0, 0, 0, .04);
    --jj-shadow-hover: 0 4px 16px rgba(30, 128, 255, .08);
    --jj-nav-height: 60px;
    --jj-code-bg: #1e1e28;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body.jj-body {
    background: var(--jj-bg);
    color: var(--jj-text);
    font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC",
        "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", WenQuanYi, sans-serif;
    font-size: 15px;
    line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--jj-primary); }
img { max-width: 100%; }
ul, ol { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* ============ 顶部导航栏 ============ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--jj-card);
    border-bottom: 1px solid #f1f1f1;
    box-shadow: 0 1px 2px rgba(0, 0, 0, .03);
}

.navbar-inner {
    display: flex;
    align-items: center;
    height: var(--jj-nav-height);
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}
.logo-full {
    display: block;
    height: 34px;
    width: auto;
}
.logo-badge {
    display: inline-flex;
    width: 32px;
    height: 32px;
    filter: drop-shadow(0 1px 3px rgba(30, 128, 255, .35));
}
.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--jj-text);
    letter-spacing: .3px;
}
.logo-tld {
    color: var(--jj-primary);
    font-weight: 600;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 0 1 auto;
    overflow: hidden;
}
.nav-link {
    padding: 6px 12px;
    border-radius: var(--jj-radius);
    color: var(--jj-text-2);
    font-size: 14px;
    white-space: nowrap;
    transition: all .15s;
}
.nav-link:hover { background: var(--jj-primary-light); color: var(--jj-primary); }
.nav-link.active { color: var(--jj-primary); font-weight: 600; }

.search-form {
    display: flex;
    align-items: center;
    margin-left: auto;
    position: relative;
    width: 240px;
    flex-shrink: 0;
}
.search-icon {
    position: absolute;
    left: 10px;
    color: var(--jj-text-3);
    pointer-events: none;
}
.search-input {
    width: 100%;
    height: 34px;
    padding: 0 12px 0 32px;
    border: 1px solid transparent;
    border-radius: 17px;
    background: #f2f3f5;
    color: var(--jj-text);
    font-size: 13px;
    outline: none;
    transition: all .2s;
}
.search-input::placeholder { color: var(--jj-text-3); }
.search-input:focus {
    background: #fff;
    border-color: var(--jj-primary);
    box-shadow: 0 0 0 3px rgba(30, 128, 255, .12);
}

.navbar-right { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 34px;
    padding: 0 16px;
    border: none;
    border-radius: var(--jj-radius);
    font-size: 14px;
    cursor: pointer;
    white-space: nowrap;
    transition: all .15s;
}
.btn-primary { background: var(--jj-primary); color: #fff; }
.btn-primary:hover { background: var(--jj-primary-hover); color: #fff; }
.btn-plain { color: var(--jj-primary); background: transparent; }
.btn-plain:hover { background: var(--jj-primary-light); color: var(--jj-primary); }

/* 移动端抽屉菜单 */
.navbar-toggle { display: none; }
.navbar-drawer { display: none; }

/* ============ 三栏布局 ============ */
.layout {
    display: grid;
    grid-template-columns: 140px minmax(0, 1fr) 300px;
    gap: 20px;
    align-items: start;
    padding-top: 20px;
    padding-bottom: 40px;
}

.layout-single { grid-template-columns: minmax(0, 1fr) 300px; }

/* ============ 左侧分类导航 ============ */
.cat-nav {
    position: sticky;
    top: calc(var(--jj-nav-height) + 20px);
    background: var(--jj-card);
    border-radius: var(--jj-radius);
    box-shadow: var(--jj-shadow);
    padding: 8px 0;
}
.cat-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    color: var(--jj-text-2);
    font-size: 14px;
    border-left: 2px solid transparent;
    transition: all .15s;
}
.cat-item:hover { color: var(--jj-primary); background: var(--jj-primary-light); }
.cat-item.active {
    color: var(--jj-primary);
    background: var(--jj-primary-light);
    border-left-color: var(--jj-primary);
    font-weight: 600;
}
.cat-icon { flex-shrink: 0; opacity: .85; }

/* ============ 信息流 ============ */
.feed { min-width: 0; }

.feed-banner {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 16px 20px;
    background: var(--jj-card);
    border-radius: var(--jj-radius);
    box-shadow: var(--jj-shadow);
    margin-bottom: 12px;
    border-bottom: 1px solid var(--jj-border);
}
.feed-banner-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--jj-text);
}
.feed-banner-sub { font-size: 13px; color: var(--jj-text-3); }

.feed-desc {
    padding: 12px 20px;
    margin-bottom: 12px;
    background: var(--jj-primary-light);
    border-radius: var(--jj-radius);
    color: var(--jj-primary);
    font-size: 13px;
}

.feed-card {
    background: var(--jj-card);
    border-radius: var(--jj-radius);
    box-shadow: var(--jj-shadow);
    margin-bottom: 12px;
    transition: box-shadow .2s;
}
.feed-card:hover { box-shadow: var(--jj-shadow-hover); }

.feed-card-body { display: flex; padding: 20px; gap: 16px; }
.feed-main { flex: 1; min-width: 0; }

.feed-title {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 8px;
}
.feed-title a { color: var(--jj-text); }
.feed-title a:hover { color: var(--jj-primary); }

.feed-excerpt {
    color: var(--jj-text-3);
    font-size: 13px;
    line-height: 1.6;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.feed-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    color: var(--jj-text-3);
    font-size: 13px;
}
.meta-dot { color: var(--jj-border); }
.meta-author { color: var(--jj-text-2); }
.meta-cat { color: var(--jj-primary); }
.meta-item:hover { color: var(--jj-primary); }

.feed-thumb { flex-shrink: 0; width: 120px; height: 80px; border-radius: var(--jj-radius); overflow: hidden; }
.feed-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }

.tag-item {
    display: inline-block;
    padding: 2px 10px;
    background: #f2f3f5;
    color: var(--jj-text-3);
    font-size: 12px;
    border-radius: 2px;
    transition: all .15s;
}
.tag-item:hover { color: var(--jj-primary); background: var(--jj-primary-light); }

.feed-empty {
    padding: 60px 20px;
    text-align: center;
    color: var(--jj-text-3);
    background: var(--jj-card);
    border-radius: var(--jj-radius);
}

/* 分页 */
.feed-pagination { display: flex; justify-content: center; gap: 6px; padding: 24px 0; }
.feed-pagination a, .feed-pagination .current, .feed-pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 10px;
    border-radius: var(--jj-radius);
    background: var(--jj-card);
    color: var(--jj-text-2);
    font-size: 14px;
    box-shadow: var(--jj-shadow);
}
.feed-pagination a:hover { color: var(--jj-primary); background: var(--jj-primary-light); }
.feed-pagination .current { background: var(--jj-primary); color: #fff; }

/* ============ 右侧边栏 ============ */
.sidebar { display: flex; flex-direction: column; gap: 12px; min-width: 0; }

.side-card {
    background: var(--jj-card);
    border-radius: var(--jj-radius);
    box-shadow: var(--jj-shadow);
    padding: 16px 20px;
}
.side-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 12px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--jj-border);
}
.side-card-title { font-size: 15px; font-weight: 700; color: var(--jj-text); }

/* 用户信息卡 */
.user-card-top { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.user-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--jj-primary), #6b9fff);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    flex-shrink: 0;
}
.user-info { display: flex; flex-direction: column; min-width: 0; }
.user-name { font-size: 16px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-desc {
    font-size: 12px;
    color: var(--jj-text-3);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.user-card-stats { display: flex; text-align: center; }
.user-card-stats .stat { flex: 1; display: flex; flex-direction: column; }
.stat-num { font-size: 18px; font-weight: 700; color: var(--jj-text); }
.stat-label { font-size: 12px; color: var(--jj-text-3); }

/* 侧栏文章列表 */
.side-post-list li {
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding: 8px 0;
}
.side-post-item + .side-post-item { border-top: 1px dashed var(--jj-border); }
.side-post-link {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--jj-text-2);
    font-size: 14px;
}
.side-post-meta { color: var(--jj-text-3); font-size: 12px; flex-shrink: 0; }
.ranked .rank {
    flex-shrink: 0;
    font-size: 14px;
    font-weight: 700;
    font-style: italic;
    color: #c3c6cf;
}
.rank-1 { color: var(--jj-red); }
.rank-2 { color: #ff9f43; }
.rank-3 { color: #feca57; }

.side-cat-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 7px 0;
}
.side-cat-list a { color: var(--jj-text-2); font-size: 14px; }
.side-cat-count { color: var(--jj-text-3); font-size: 12px; background: #f2f3f5; padding: 1px 8px; border-radius: 10px; }
.side-tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.side-empty { color: var(--jj-text-3); font-size: 13px; }

/* ============ 文章页 ============ */
.post-card {
    background: var(--jj-card);
    border-radius: var(--jj-radius);
    box-shadow: var(--jj-shadow);
    padding: 32px 36px;
}

.post-header { margin-bottom: 24px; border-bottom: 1px solid var(--jj-border); padding-bottom: 20px; }
.post-title {
    font-size: 26px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 14px;
}
.post-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; font-size: 13px; color: var(--jj-text-3); }

.post-tags { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px; }

.post-nav {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--jj-border);
}
.post-nav a {
    color: var(--jj-text-2);
    font-size: 14px;
    padding: 10px 14px;
    background: #f7f8fa;
    border-radius: var(--jj-radius);
    max-width: 48%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.post-nav a:hover { color: var(--jj-primary); background: var(--jj-primary-light); }

/* ---- 正文排版（仿掘金 markdown 样式） ---- */
.entry-content { color: var(--jj-text-2); font-size: 16px; line-height: 1.8; word-break: break-word; }
.entry-content a { color: var(--jj-primary); border-bottom: 1px solid rgba(30, 128, 255, .35); }
.entry-content a:hover { border-bottom-color: var(--jj-primary); }
.entry-content p { margin: 16px 0; }

.entry-content h1, .entry-content h2, .entry-content h3,
.entry-content h4, .entry-content h5, .entry-content h6 {
    color: var(--jj-text);
    font-weight: 700;
    margin: 32px 0 16px;
    line-height: 1.4;
}
.entry-content h1 { font-size: 24px; }
.entry-content h2 { font-size: 22px; padding-bottom: 8px; border-bottom: 1px solid var(--jj-border); }
.entry-content h3 { font-size: 19px; }
.entry-content h4 { font-size: 17px; }

.entry-content blockquote {
    margin: 16px 0;
    padding: 12px 16px;
    background: #f7f8fa;
    border-left: 3px solid var(--jj-primary);
    border-radius: 0 var(--jj-radius) var(--jj-radius) 0;
    color: var(--jj-text-3);
}

.entry-content ul, .entry-content ol { margin: 16px 0; padding-left: 24px; }
.entry-content ul { list-style: disc; }
.entry-content ol { list-style: decimal; }
.entry-content li { margin: 6px 0; }

.entry-content img { border-radius: var(--jj-radius); margin: 16px auto; display: block; }

.entry-content code {
    background: #fff5f5;
    color: var(--jj-red);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 87%;
    font-family: "JetBrains Mono", "Fira Code", Consolas, Menlo, monospace;
}

.entry-content pre {
    background: var(--jj-code-bg);
    border-radius: var(--jj-radius);
    padding: 16px 20px;
    margin: 20px 0;
    overflow-x: auto;
}
.entry-content pre code {
    background: transparent;
    color: #abb2bf;
    padding: 0;
    font-size: 14px;
    line-height: 1.7;
}

.entry-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 14px;
}
.entry-content th, .entry-content td {
    border: 1px solid var(--jj-border);
    padding: 10px 14px;
    text-align: left;
}
.entry-content th { background: #f7f8fa; color: var(--jj-text); font-weight: 600; }
.entry-content tr:nth-child(2n) td { background: #fafbfc; }

.entry-content hr { border: none; border-top: 1px solid var(--jj-border); margin: 32px 0; }

/* ============ 评论 ============ */
.comments { margin-top: 12px; }
.comments-header { background: var(--jj-card); border-radius: var(--jj-radius) var(--jj-radius) 0 0; box-shadow: var(--jj-shadow); padding: 16px 20px 0; }
.comment-list { background: var(--jj-card); border-radius: 0 0 var(--jj-radius) var(--jj-radius); box-shadow: var(--jj-shadow); padding: 0 20px 12px; }

.comment-item { padding: 16px 0; }
.comment-item + .comment-item { border-top: 1px dashed var(--jj-border); }

.comment-author { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.comment-author img { width: 40px; height: 40px; border-radius: 50%; }
.comment-name { font-size: 14px; font-weight: 600; color: var(--jj-text); }
.comment-badge {
    font-size: 11px;
    color: var(--jj-primary);
    background: var(--jj-primary-light);
    padding: 1px 8px;
    border-radius: 3px;
}
.comment-content { font-size: 14px; color: var(--jj-text-2); margin-bottom: 8px; }
.comment-content p { margin: 6px 0; }
.comment-meta { display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--jj-text-3); }
.comment-reply { color: var(--jj-primary); cursor: pointer; }
.comment-children { margin-left: 50px; padding-left: 16px; border-left: 2px solid var(--jj-primary-light); }

.comment-respond { background: var(--jj-card); border-radius: var(--jj-radius); box-shadow: var(--jj-shadow); padding: 16px 20px; }
.comment-form { display: flex; flex-direction: column; gap: 10px; }
.comment-fields { display: flex; gap: 10px; }
.comment-input {
    flex: 1;
    height: 34px;
    padding: 0 12px;
    border: 1px solid var(--jj-border);
    border-radius: var(--jj-radius);
    font-size: 13px;
    outline: none;
    min-width: 0;
}
.comment-input:focus { border-color: var(--jj-primary); }
.comment-logged { font-size: 13px; color: var(--jj-text-2); }
.comment-logged a { color: var(--jj-primary); margin-left: 8px; }
.comment-textarea {
    padding: 10px 12px;
    border: 1px solid var(--jj-border);
    border-radius: var(--jj-radius);
    font-size: 14px;
    font-family: inherit;
    resize: vertical;
    outline: none;
}
.comment-textarea:focus { border-color: var(--jj-primary); }
.comment-actions { display: flex; justify-content: flex-end; }
.comments-closed { padding: 16px 20px; color: var(--jj-text-3); font-size: 13px; background: var(--jj-card); border-radius: var(--jj-radius); text-align: center; }

/* ============ 页脚 ============ */
.site-footer {
    background: var(--jj-card);
    border-top: 1px solid var(--jj-border);
    padding: 28px 0 40px;
    text-align: center;
    color: var(--jj-text-3);
    font-size: 13px;
}
.footer-links { margin-bottom: 8px; }
.footer-links a { color: var(--jj-text-2); }
.footer-links a:hover { color: var(--jj-primary); }
.footer-copy { color: var(--jj-text-3); }

/* 回到顶部 */
.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 32px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--jj-card);
    color: var(--jj-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--jj-shadow-hover);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all .25s;
    z-index: 99;
    border: 1px solid var(--jj-border);
}
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--jj-primary); color: #fff; }

/* ============ 响应式 ============ */
@media (max-width: 1100px) {
    .layout { grid-template-columns: minmax(0, 1fr) 260px; }
    .cat-nav { display: none; }
}

@media (max-width: 768px) {
    .layout { grid-template-columns: minmax(0, 1fr); padding-top: 12px; }
    .navbar-nav, .navbar-right, .search-form:not(.drawer-search) { display: none; }

    .navbar-toggle {
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 4px;
        margin-left: auto;
        width: 36px;
        height: 36px;
        padding: 8px;
        background: transparent;
        border: none;
        cursor: pointer;
    }
    .navbar-toggle span { display: block; height: 2px; background: var(--jj-text); border-radius: 2px; }
    .navbar-drawer.open { display: block; padding: 12px 16px 16px; border-top: 1px solid var(--jj-border); background: var(--jj-card); }
    .drawer-search { width: 100%; margin: 0 0 10px; }
    .drawer-nav { display: flex; flex-wrap: wrap; gap: 6px; }
    .drawer-nav .nav-link { padding: 6px 12px; background: #f2f3f5; border-radius: 14px; }

    .post-card { padding: 20px 18px; }
    .post-title { font-size: 21px; }
    .feed-card-body { padding: 16px; }
    .feed-thumb { width: 88px; height: 64px; }
    .comment-fields { flex-direction: column; }
    .comment-children { margin-left: 16px; }
}

@media (max-width: 480px) {
    .feed-thumb { display: none; }
    .search-form { width: 150px; }
    .logo-full { height: 28px; }
}