/*
Theme Name: Lime Personal Blog
Author: lime初中生
Author URI: https://example.com
Description: 深色风格个人博客主题，支持深色/浅色主题切换，包含首页、项目、文章列表。
Version: 1.4.1
Requires at least: 5.6
Requires PHP: 7.2
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: lime-blog
Tags: blog, dark, light, minimalist, personal
*/

/*
*! lime-blog
*! Theme Version: 1.4.1
*/

body {
    --max-width: 1200px;
    --theme-color: #f04494;
    --focus-color: var(--theme-color);
    --focus-shadow-color: rgba(240, 68, 148, 0.25);

    --key-color: #333;
    --main-color: #4e5358;
    --main-shadow: rgba(116, 116, 116, 0.08);
    --muted-color: #777;
    --muted-2-color: #999;
    --muted-3-color: #b1b1b1;
    --muted-4-color: #d2d2d2;

    --body-bg-color: #f5f6f7;
    --main-bg-color: #fff;
    --muted-bg-color: #eee;
    --main-border-color: rgba(50, 50, 50, 0.06);
    --muted-border-color: rgba(0, 0, 0, 0.03);
    --main-radius: 8px;

    --blur-bg: rgba(255, 255, 255, 0.8);
    --float-btn-bg: rgba(200, 200, 200, 0.4);

    --header-bg: var(--blur-bg);
    --header-color: var(--main-color);
    --footer-bg: var(--main-bg-color);
    --footer-color: var(--muted-2-color);
}

.dark-theme {
    --key-color: #f8fafc;
    --main-color: #e5eef7;
    --main-shadow: rgba(24, 24, 24, 0.1);
    --muted-color: #b4b6bb;
    --muted-2-color: #888a8f;
    --muted-3-color: #636469;
    --muted-4-color: #43454a;

    --body-bg-color: #292a2d;
    --main-bg-color: #323335;
    --muted-bg-color: #2d2e31;
    --main-border-color: rgba(114, 114, 114, 0.1);
    --muted-border-color: rgba(184, 184, 184, 0.02);

    --blur-bg: rgba(50, 51, 53, 0.8);
    --float-btn-bg: rgba(70, 70, 70, 0.4);

    --header-bg: var(--blur-bg);
    --header-color: var(--main-color);
    --footer-bg: var(--main-bg-color);
    --footer-color: var(--muted-2-color);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--body-bg-color);
    color: var(--main-color);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    transition: background 0.3s ease, color 0.3s ease;
}

a {
    color: var(--theme-color);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

a:hover {
    opacity: 0.75;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 9999;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--main-border-color);
    padding: 14px 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.site-branding {
    font-size: 22px;
    font-weight: 700;
    color: var(--key-color);
    letter-spacing: 0.5px;
}

.site-branding:hover {
    opacity: 1;
}

.main-navigation ul {
    display: flex;
    list-style: none;
    gap: 6px;
    margin: 0;
    padding: 0;
}

.main-navigation ul li a {
    display: inline-block;
    padding: 7px 16px;
    font-size: 15px;
    color: var(--main-color);
    border-radius: 100px;
    transition: background 0.2s, color 0.2s;
}

.main-navigation ul li a:hover {
    background: var(--focus-shadow-color);
    color: var(--theme-color);
    opacity: 1;
}

.main-navigation ul li.current-menu-item a,
.main-navigation ul li.current-page-ancestor a {
    background: var(--theme-color);
    color: #fff;
}

/* ===== Theme Toggle ===== */
.theme-toggle {
    width: 42px;
    height: 42px;
    border: none;
    background: var(--muted-bg-color);
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, transform 0.2s;
    flex-shrink: 0;
}

.theme-toggle:hover {
    background: var(--focus-shadow-color);
    transform: scale(1.08);
}

/* ===== Mobile Menu ===== */
.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: none;
    background: transparent;
    cursor: pointer;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    border-radius: 50%;
    transition: background 0.2s;
}

.menu-toggle:hover {
    background: var(--muted-bg-color);
}

.menu-toggle .bar {
    width: 22px;
    height: 2px;
    background: var(--key-color);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}

.menu-toggle.open .bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle.open .bar:nth-child(2) {
    opacity: 0;
}

.menu-toggle.open .bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===== Footer ===== */
.site-footer {
    background: var(--footer-bg);
    color: var(--footer-color);
    padding: 40px 0;
    margin-top: 60px;
    border-top: 1px solid var(--muted-border-color);
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
}

.footer-inner .copyright {
    font-size: 14px;
}

.footer-inner .meta {
    font-size: 13px;
    color: var(--muted-3-color);
}

/* ===== Search Form ===== */
.search-form {
    position: relative;
    display: flex;
    flex-shrink: 0;
}

.search-form .search-field {
    padding: 9px 16px;
    font-size: 14px;
    border: 1px solid var(--main-border-color);
    border-radius: 100px;
    background: var(--main-bg-color);
    color: var(--main-color);
    min-width: 180px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.search-form .search-field:focus {
    outline: none;
    border-color: var(--theme-color);
    box-shadow: 0 0 0 3px var(--focus-shadow-color);
}

.search-form .search-submit {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--muted-2-color);
    cursor: pointer;
    font-size: 16px;
    padding: 4px;
}

.search-form .search-submit:hover {
    color: var(--theme-color);
}

/* ===== Back to top ===== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--float-btn-bg);
    color: var(--main-color);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s, transform 0.3s, background 0.2s;
    z-index: 9999;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--theme-color);
    color: #fff;
    transform: translateY(-3px);
}

/* ===== Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}


/* ===== Skip Link ===== */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    background: var(--theme-color);
    color: #fff;
    border-radius: var(--main-radius);
    z-index: 10000;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 10px;
    outline: none;
}

/* ===== Breadcrumbs ===== */
.breadcrumbs {
    margin-bottom: 24px;
    font-size: 14px;
}

.breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    color: var(--muted-2-color);
}

.breadcrumb-item:not(:last-child)::after {
    content: '/';
    margin-left: 6px;
    color: var(--muted-3-color);
}

.breadcrumb-item a {
    color: var(--muted-2-color);
    transition: color 0.2s;
}

.breadcrumb-item a:hover {
    color: var(--theme-color);
    opacity: 1;
}

.breadcrumb-item.active {
    color: var(--main-color);
    font-weight: 500;
}

/* ===== Table of Contents ===== */
.table-of-contents {
    background: var(--muted-bg-color);
    border-radius: var(--main-radius);
    padding: 20px;
    margin: 24px 0;
    border: 1px solid var(--muted-border-color);
}

.toc-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--key-color);
    margin: 0 0 12px 0;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--muted-border-color);
}

.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-item {
    margin-bottom: 6px;
}

.toc-item:last-child {
    margin-bottom: 0;
}

.toc-item a {
    display: block;
    font-size: 13px;
    color: var(--muted-color);
    line-height: 1.6;
    padding: 2px 0;
    transition: color 0.2s;
    border-left: 2px solid transparent;
    padding-left: 10px;
    margin-left: -10px;
}

.toc-item a:hover {
    color: var(--theme-color);
    border-left-color: var(--theme-color);
}

.toc-level-3 {
    padding-left: 16px !important;
    margin-left: -16px !important;
}

.toc-level-4 {
    padding-left: 32px !important;
    margin-left: -32px !important;
}

/* ===== Reading Progress ===== */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: transparent;
    z-index: 10001;
    pointer-events: none;
}

.reading-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--theme-color), #e03e8a);
    transition: width 0.1s linear;
    border-radius: 0 0 4px 0;
}

/* ===== Social Sharing ===== */
.social-sharing {
    display: flex;
    gap: 10px;
    margin: 24px 0;
    padding: 16px 0;
    border-top: 1px solid var(--muted-border-color);
    border-bottom: 1px solid var(--muted-border-color);
}

.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: none;
    background: var(--muted-bg-color);
    color: var(--main-color);
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    transition: background 0.2s, color 0.2s, transform 0.2s;
    position: relative;
}

.share-btn:hover {
    background: var(--focus-shadow-color);
    color: var(--theme-color);
    transform: scale(1.08);
}

.share-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--focus-shadow-color);
}

.share-wechat {
    position: relative;
}

.wechat-qrcode {
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--main-bg-color);
    border-radius: var(--main-radius);
    padding: 12px;
    box-shadow: 0 4px 20px var(--main-shadow);
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s, transform 0.2s;
    transform: translateX(-50%) translateY(10px);
    z-index: 100;
    white-space: nowrap;
}

.wechat-qrcode.visible {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.wechat-qrcode img {
    display: block;
    margin: 0 auto 8px;
}

.wechat-qrcode p {
    font-size: 12px;
    color: var(--muted-color);
    margin: 0;
}

/* ===== Comments ===== */
.comments-section {
    padding: 40px 0;
    max-width: 800px;
    margin: 0 auto;
}

.section-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--key-color);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--theme-color);
    display: inline-block;
}

.comment-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.comment-list .comment {
    padding: 20px 0;
    border-bottom: 1px solid var(--muted-border-color);
}

.comment-list .comment:last-child {
    border-bottom: none;
}

.comment-body {
    display: flex;
    gap: 12px;
}

.comment-avatar {
    flex-shrink: 0;
}

.comment-avatar img {
    width: 44px;
    height: 44px;
    border-radius: 50%;
}

.comment-inner {
    flex: 1;
}

.comment-meta {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.comment-author {
    font-weight: 600;
    font-size: 14px;
    color: var(--key-color);
}

.comment-author a {
    color: inherit;
}

.comment-author a:hover {
    color: var(--theme-color);
}

.comment-metadata {
    font-size: 13px;
    color: var(--muted-3-color);
}

.comment-metadata a {
    color: inherit;
}

.comment-metadata a:hover {
    color: var(--theme-color);
}

.edit-link {
    font-size: 13px;
    color: var(--muted-3-color);
}

.edit-link a {
    color: inherit;
}

.edit-link a:hover {
    color: var(--theme-color);
}

.comment-content {
    font-size: 15px;
    line-height: 1.8;
    color: var(--main-color);
}

.comment-footer {
    margin-top: 8px;
}

.comment-reply-link {
    font-size: 13px;
    color: var(--muted-2-color);
    padding: 4px 10px;
    border-radius: 100px;
    transition: background 0.2s, color 0.2s;
}

.comment-reply-link:hover {
    background: var(--focus-shadow-color);
    color: var(--theme-color);
}

.comment-list .children {
    list-style: none;
    padding-left: 48px;
    margin-top: 16px;
    border-left: 2px solid var(--muted-border-color);
}

.comment-list .children .comment {
    padding-top: 16px;
    border-bottom: none;
}

/* Comment Form */
.comment-respond {
    margin-top: 40px;
}

.comment-respond h2,
.comment-reply-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--key-color);
    margin-bottom: 20px;
}

.comment-form p {
    margin-bottom: 14px;
}

.comment-form label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--main-color);
    margin-bottom: 6px;
}

.comment-form .required {
    color: var(--theme-color);
}

.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 14px;
    border: 1px solid var(--main-border-color);
    border-radius: var(--main-radius);
    background: var(--main-bg-color);
    color: var(--main-color);
    transition: border-color 0.2s, box-shadow 0.2s;
    font-family: inherit;
}

.comment-form input:focus,
.comment-form textarea:focus {
    outline: none;
    border-color: var(--theme-color);
    box-shadow: 0 0 0 3px var(--focus-shadow-color);
}

.comment-form textarea {
    min-height: 120px;
    resize: vertical;
}

.comment-form .submit {
    padding: 11px 28px;
    font-size: 15px;
    font-weight: 500;
    background: var(--theme-color);
    color: #fff;
    border: none;
    border-radius: 100px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.comment-form .submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--focus-shadow-color);
}

.comment-form .submit:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--focus-shadow-color);
}

.comment-notes {
    font-size: 13px;
    color: var(--muted-2-color);
    margin-bottom: 16px;
}

.logged-in-as,
.must-log-in {
    font-size: 13px;
    color: var(--muted-2-color);
    margin-bottom: 16px;
}

.logged-in-as a,
.must-log-in a {
    color: var(--theme-color);
}

.comment-lead,
.comments-closed {
    font-size: 14px;
    color: var(--muted-2-color);
    text-align: center;
    padding: 20px 0;
}

/* Comment navigation */
.comment-navigation {
    display: flex;
    justify-content: space-between;
    padding-top: 20px;
    margin-top: 20px;
    border-top: 1px solid var(--muted-border-color);
}

.comment-navigation .nav-previous,
.comment-navigation .nav-next {
    font-size: 14px;
}

.comment-navigation a {
    color: var(--main-color);
    transition: color 0.2s;
}

.comment-navigation a:hover {
    color: var(--theme-color);
}

/* ===== Page Article ===== */
.page-article {
    padding: 40px 0;
    max-width: 800px;
    margin: 0 auto;
}

.page-header {
    margin-bottom: 30px;
}

.page-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    color: var(--key-color);
    line-height: 1.3;
}

.page-content {
    font-size: 16px;
    line-height: 1.9;
    color: var(--main-color);
}

.page-content p {
    margin-bottom: 1.2em;
}

.page-content h1,
.page-content h2,
.page-content h3,
.page-content h4 {
    color: var(--key-color);
    font-weight: 700;
    margin-top: 1.6em;
    margin-bottom: 0.8em;
    line-height: 1.4;
}

.page-content h1 { font-size: 1.8em; }
.page-content h2 { font-size: 1.5em; }
.page-content h3 { font-size: 1.3em; }
.page-content h4 { font-size: 1.1em; }

.page-content a {
    color: var(--theme-color);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.page-content a:hover {
    opacity: 0.8;
}

.page-links {
    display: flex;
    gap: 8px;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--muted-border-color);
    font-size: 14px;
    color: var(--muted-2-color);
}

.page-links a {
    padding: 8px 14px;
    border: 1px solid var(--main-border-color);
    border-radius: var(--main-radius);
    color: var(--main-color);
    transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.page-links a:hover {
    border-color: var(--theme-color);
    color: var(--theme-color);
    background: var(--focus-shadow-color);
}

.page-links .current {
    padding: 8px 14px;
    background: var(--theme-color);
    color: #fff;
    border-color: var(--theme-color);
    border-radius: var(--main-radius);
}

/* ===== Post Navigation (already exists but ensuring) */
.post-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.nav-link {
    display: block;
    font-size: 14px;
    color: var(--main-color);
    transition: color 0.2s;
    max-width: 40%;
}

.nav-link a {
    color: inherit;
}

.nav-link a:hover {
    color: var(--theme-color);
    opacity: 1;
}

.nav-link.disabled {
    color: var(--muted-3-color);
    cursor: default;
}

.nav-center {
    text-align: center;
}

.nav-center a {
    font-size: 13px;
    color: var(--muted-2-color);
    text-decoration: none;
}

.nav-center a:hover {
    color: var(--theme-color);
}

/* ===== No Posts / Empty States ===== */
.no-posts,
.notfound-section {
    text-align: center;
    padding: 80px 0;
}

.empty-title,
.notfound-title {
    font-size: 24px;
    color: var(--key-color);
    margin-bottom: 10px;
}

.notfound-title {
    font-size: 120px;
    font-weight: 800;
    color: var(--theme-color);
    opacity: 0.3;
    line-height: 1;
}

.empty-desc,
.notfound-desc {
    font-size: 15px;
    color: var(--muted-2-color);
    margin-bottom: 24px;
}

/* ===== Pagination ===== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 20px;
}

.pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    font-size: 14px;
    color: var(--main-color);
    border-radius: var(--main-radius);
    transition: background 0.2s, color 0.2s;
}

.pagination .page-numbers:hover {
    background: var(--focus-shadow-color);
    color: var(--theme-color);
}

.pagination .page-numbers.current {
    background: var(--theme-color);
    color: #fff;
}

.pagination .page-numbers.dots {
    background: transparent;
}

/* ===== Screen Reader ===== */
.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ===== Dark theme overrides ===== */
.dark-theme .post-card {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.dark-theme .post-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.dark-theme .table-of-contents {
    border-color: var(--muted-border-color);
}

.dark-theme .comment-list .children {
    border-left-color: var(--muted-border-color);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .posts-grid {
        grid-template-columns: 1fr;
    }

    .post-article,
    .comments-section,
    .page-article {
        max-width: 100%;
        padding: 20px 0;
    }

    .hero-section {
        padding: 40px 0;
    }

    .post-navigation {
        flex-direction: column;
        gap: 10px;
    }

    .nav-link {
        max-width: 100%;
    }

    .comment-list .children {
        padding-left: 24px;
    }

    .table-of-contents {
        padding: 16px;
    }

    .social-sharing {
        flex-wrap: wrap;
        justify-content: center;
    }

    .breadcrumb-list {
        gap: 4px;
    }

    .breadcrumb-item:not(:last-child)::after {
        margin-left: 4px;
    }
}

/* ===== Print Styles ===== */

/* ===== Header Social Links ===== */
.header-social {
    flex-shrink: 0;
}

.social-list {
    display: flex;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--muted-2-color);
    background: var(--muted-bg-color);
    border-radius: 50%;
    transition: background 0.2s, color 0.2s, transform 0.2s;
}

.social-link:hover {
    background: var(--focus-shadow-color);
    color: var(--theme-color);
    transform: scale(1.08);
    opacity: 1;
}

/* ===== Footer Text ===== */
.footer-text {
    font-size: 13px;
    color: var(--muted-3-color);
    margin: 8px 0 0;
    line-height: 1.6;
}

.footer-text a {
    color: var(--theme-color);
}

/* ===== Layout: Sidebar Positions ===== */
.layout-wrap {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    align-items: start;
}

.layout-wrap.no-sidebar {
    grid-template-columns: 1fr;
    max-width: 800px;
    margin: 0 auto;
}

.content-area {
    min-width: 0;
}

.sidebar {
    position: sticky;
    top: 100px;
}

.sidebar-left .content-area {
    order: 2;
}

.sidebar-left .sidebar {
    order: 1;
}

.sidebar-right .sidebar {
    order: 2;
}

.sidebar-right .content-area {
    order: 1;
}

/* ===== Hero Section (updated) ===== */
.hero-section {
    padding: 60px 0;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
}

.hero-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 4px 12px var(--main-shadow);
}

.hero-title {
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 700;
    color: var(--key-color);
    line-height: 1.2;
}

.hero-greeting {
    font-size: 20px;
    color: var(--main-color);
    margin: 0;
}

.hero-bio {
    font-size: 16px;
    color: var(--muted-color);
    max-width: 500px;
    line-height: 1.8;
    margin: 0;
}

.hero-buttons {
    display: flex;
    gap: 14px;
    margin-top: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

/* ===== Body Font Classes ===== */
body.font-system {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

body.font-serif {
    font-family: Georgia, Cambria, "Times New Roman", serif;
}

body.font-mono {
    font-family: "SF Mono", "Fira Code", Consolas, monospace;
}

body.font-custom {
    /* Custom font loaded via @import in customize CSS */
}

/* ===== Search Results ===== */
.search-results .archive-title {
    font-size: 24px;
}

/* ===== Author Archive ===== */
.author-header {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 40px 0;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--muted-border-color);
}

.author-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
}

.author-info h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--key-color);
    margin-bottom: 8px;
}

.author-info .author-bio {
    color: var(--muted-color);
    line-height: 1.8;
}

/* ===== Category/Tag Archive Header ===== */
.archive-header .archive-description {
    margin-top: 12px;
    color: var(--muted-color);
    font-size: 15px;
    line-height: 1.7;
}

/* ===== Post Meta Enhancements ===== */
.post-meta .reading-time {
    margin-left: 8px;
    color: var(--muted-3-color);
    font-size: 13px;
}

.card-meta .reading-time {
    margin-left: 8px;
    color: var(--muted-3-color);
    font-size: 12px;
}

/* ===== Related Posts ===== */
.related-posts {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--muted-border-color);
}

.related-posts h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--key-color);
    margin-bottom: 24px;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.related-post-card {
    background: var(--main-bg-color);
    border-radius: var(--main-radius);
    overflow: hidden;
    box-shadow: 0 1px 3px var(--main-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.related-post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--main-shadow);
}

.related-post-thumb {
    display: block;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.related-post-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.related-post-card:hover .related-post-thumb img {
    transform: scale(1.05);
}

.related-post-body {
    padding: 16px;
}

.related-post-title {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.5;
    color: var(--key-color);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-post-title:hover {
    color: var(--theme-color);
}

/* ===== Enhanced Focus States ===== */
*:focus-visible {
    outline: 2px solid var(--theme-color);
    outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--theme-color);
    outline-offset: 2px;
}

/* ===== Print Styles (moved to end) ===== */
@media print {
    .site-header,
    .site-footer,
    .sidebar,
    .back-to-top,
    .theme-toggle,
    .menu-toggle,
    .social-sharing,
    .post-navigation,
    .comment-respond,
    .reading-progress,
    .header-social,
    .hero-buttons,
    .toc-list a::after {
        display: none !important;
    }

    .post-article,
    .page-article,
    .comments-section,
    .hero-section {
        max-width: 100% !important;
        padding: 0 !important;
    }

    body {
        background: #fff !important;
        color: #000 !important;
    }

    a {
        color: #000 !important;
        text-decoration: underline !important;
    }

    .post-card,
    .table-of-contents {
        break-inside: avoid;
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }

    .hero-avatar {
        box-shadow: none !important;
    }
}


/* ===== Excerpt More Link ===== */
.excerpt-more-link {
    display: inline-block;
    margin-top: 8px;
    font-size: 14px;
    color: var(--theme-color);
    font-weight: 500;
    transition: opacity 0.2s;
}

.excerpt-more-link:hover {
    opacity: 0.75;
}

/* ===== Custom Logo ===== */
.site-branding img {
    max-height: 80px;
    width: auto;
}

/* ===== Custom Logo in Footer ===== */
.site-footer .site-branding img {
    max-height: 40px;
}



/* ===== Copy Code Button ===== */
.post-content pre,
.wp-block-code,
.wp-block-preformatted {
    position: relative;
}

.copy-code-btn:hover {
    background: var(--focus-shadow-color) !important;
    color: var(--theme-color) !important;
}

.copy-code-btn:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--focus-shadow-color);
}

/* ===== Image Lightbox ===== */
.image-lightbox {
    display: inline-block;
    cursor: zoom-in;
    position: relative;
}

.image-lightbox::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0) 50%, rgba(0,0,0,.1) 100%);
    opacity: 0;
    transition: opacity .2s;
    pointer-events: none;
    border-radius: inherit;
}

.image-lightbox:hover::after {
    opacity: 1;
}

.image-lightbox:hover img {
    transform: scale(1.02);
}

.image-lightbox img {
    transition: transform .3s ease;
}

/* ===== TOC Toggle ===== */
.toc-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.toc-toggle:hover {
    color: var(--theme-color) !important;
}

.toc-toggle:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--focus-shadow-color);
    border-radius: 4px;
}

.toc-list {
    transition: opacity .2s, height .2s, margin .2s;
    overflow: hidden;
}

/* ===== Keyboard Shortcuts Help ===== */
.shortcuts-help {
    /* styles injected via JS */
}

/* ===== Reading Position Indicator (optional visual) ===== */
.reading-position-indicator {
    position: fixed;
    bottom: 80px;
    right: 20px;
    padding: 8px 12px;
    background: var(--theme-color);
    color: #fff;
    border-radius: 100px;
    font-size: 12px;
    box-shadow: 0 4px 12px var(--focus-shadow-color);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity .3s, transform .3s;
    z-index: 1000;
    pointer-events: none;
}

.reading-position-indicator.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Enhanced Focus States for New Elements ===== */
.copy-code-btn:focus-visible,
.toc-toggle:focus-visible,
.theme-toggle:focus-visible,
.menu-toggle:focus-visible,
.back-to-top:focus-visible,
.share-btn:focus-visible,
.social-link:focus-visible,
.nav-link a:focus-visible,
.pagination .page-numbers:focus-visible,
.btn:focus-visible,
.search-field:focus-visible,
.comment-form input:focus-visible,
.comment-form textarea:focus-visible {
    outline: 2px solid var(--theme-color);
    outline-offset: 2px;
}

/* ===== Smooth Scroll for Anchor Links ===== */
html {
    scroll-behavior: smooth;
}

/* Disable smooth scroll for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===== Print Enhancements ===== */
@media print {
    .copy-code-btn,
    .toc-toggle,
    .theme-toggle,
    .menu-toggle,
    .back-to-top,
    .social-sharing,
    .reading-progress,
    .image-lightbox::after,
    .shortcuts-help {
        display: none !important;
    }
    
    .image-lightbox {
        cursor: default;
    }
    
    .image-lightbox img {
        transform: none !important;
    }
    
    .toc-list {
        display: block !important;
    }
    
    .post-content pre {
        page-break-inside: avoid;
    }
    
    .post-content pre code {
        background: transparent !important;
        color: #000 !important;
    }
}



/* ===== Sticky TOC in Sidebar ===== */
.toc-sticky {
    background: var(--main-bg-color);
    border-radius: var(--main-radius);
    padding: 16px;
    box-shadow: 0 1px 3px var(--main-shadow);
}

.toc-sticky .toc-title {
    font-size: 14px;
    margin-bottom: 12px;
    padding-bottom: 8px;
}

.toc-sticky .toc-list {
    font-size: 12px;
    line-height: 1.6;
}

.toc-sticky .toc-item a {
    padding: 3px 0 3px 8px;
    margin-left: -8px;
    border-left-width: 2px;
}

.toc-sticky .toc-level-3 {
    padding-left: 12px !important;
    margin-left: -12px !important;
}

.toc-sticky .toc-level-4 {
    padding-left: 20px !important;
    margin-left: -20px !important;
}

/* Hide sticky TOC on mobile */
@media (max-width: 1023px) {
    .toc-sticky {
        display: none !important;
    }
    
    .table-of-contents {
        display: block !important;
    }
}

/* ===== Load More Comments Button ===== */
.load-more-comments {
    display: block;
    text-align: center;
}

.load-more-comments:hover {
    background: var(--focus-shadow-color);
    color: var(--theme-color);
}

/* ===== Back to Top Progress Ring ===== */
.back-to-top {
    position: relative;
}

.back-to-top svg {
    width: 48px;
    height: 48px;
}

.back-top-progress {
    transition: stroke-dashoffset 0.1s linear;
}

/* ===== Comment Fade-in Animation ===== */
.comment-list .comment {
    opacity: 0;
    transform: translateY(10px);
    animation: commentFadeIn 0.4s ease forwards;
}

.comment-list .comment:nth-child(1) { animation-delay: 0ms; }
.comment-list .comment:nth-child(2) { animation-delay: 50ms; }
.comment-list .comment:nth-child(3) { animation-delay: 100ms; }
.comment-list .comment:nth-child(4) { animation-delay: 150ms; }
.comment-list .comment:nth-child(5) { animation-delay: 200ms; }
.comment-list .comment:nth-child(n+6) { animation-delay: 250ms; }

@keyframes commentFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.comment-list .comment.visible {
    animation: none;
    opacity: 1;
    transform: translateY(0);
}

/* ===== Smooth Scroll for Hash Links ===== */
:target {
    scroll-margin-top: 100px;
}

/* ===== Code Block Hover Effect ===== */
.post-content pre:hover .copy-code-btn {
    opacity: 1 !important;
}

/* ===== Reduced Motion for New Animations ===== */
@media (prefers-reduced-motion: reduce) {
    .comment-list .comment {
        animation: none;
        opacity: 1;
        transform: none;
    }
    
    .back-top-progress {
        transition: none;
    }
    
    .toc-sticky {
        transition: none;
    }
}


@media print {
    .site-header,
    .site-footer,
    .sidebar,
    .back-to-top,
    .theme-toggle,
    .menu-toggle,
    .social-sharing,
    .post-navigation,
    .comment-respond,
    .reading-progress {
        display: none !important;
    }

    .post-article,
    .page-article,
    .comments-section {
        max-width: 100% !important;
        padding: 0 !important;
    }

    body {
        background: #fff !important;
        color: #000 !important;
    }

    a {
        color: #000 !important;
        text-decoration: underline !important;
    }

    .post-card,
    .table-of-contents {
        break-inside: avoid;
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
}
/* ===== Responsive ===== */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .main-navigation {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--header-bg);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--main-border-color);
        display: none;
        padding: 16px;
    }

    .main-navigation.open {
        display: block;
    }

    .main-navigation ul {
        flex-direction: column;
        gap: 2px;
    }

    .main-navigation ul li a {
        display: block;
        padding: 12px 16px;
    }

    .site-branding {
        font-size: 18px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }

    .site-footer {
        margin-top: 40px;
        padding: 30px 0;
    }
}

/* ===== Back to Top Ring Colors（var 在 SVG 属性中不生效，改由 CSS 提供）===== */
.back-to-top .back-top-track {
    stroke: var(--muted-border-color);
}

.back-to-top .back-top-progress {
    stroke: var(--theme-color);
}

/* ===== Lightbox Overlay ===== */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100000;
    padding: 32px;
    animation: lightboxFade 0.2s ease;
}

@keyframes lightboxFade {
    from { opacity: 0; }
    to { opacity: 1; }
}

.lightbox-figure {
    margin: 0;
    max-width: 90vw;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.lightbox-img {
    max-width: 100%;
    max-height: 78vh;
    object-fit: contain;
    border-radius: var(--main-radius);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.5);
}

.lightbox-caption {
    color: #fff;
    font-size: 14px;
    text-align: center;
    max-width: 640px;
    line-height: 1.6;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 24px;
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-close:hover {
    background: var(--theme-color);
}

@media (prefers-reduced-motion: reduce) {
    .lightbox-overlay {
        animation: none;
    }
}

/* ═══════════════════════════════════════════════
   Visual Polish v2 — 界面美化层
   （位于文件末尾，同优先级下覆盖前述规则）
   ═══════════════════════════════════════════════ */

/* ===== 1. 设计令牌微调 ===== */
body {
    --main-radius: 14px;
    --main-shadow: rgba(100, 100, 120, 0.1);
    color-scheme: light;
}

body.dark-theme {
    color-scheme: dark;
    --main-shadow: rgba(0, 0, 0, 0.35);
}

/* ===== 2. 滚动条 & 选中色 ===== */
html {
    scrollbar-width: thin;
    scrollbar-color: var(--muted-3-color) transparent;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--muted-3-color);
    border-radius: 8px;
    border: 2px solid var(--body-bg-color);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--theme-color);
}

::selection {
    background: var(--theme-color);
    color: #fff;
}

/* ===== 3. 背景氛围光斑 ===== */
body::before,
body::after {
    content: '';
    position: fixed;
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
    filter: blur(70px);
}

body::before {
    top: -18%;
    right: -8%;
    width: 460px;
    height: 460px;
    background: radial-gradient(circle, var(--focus-shadow-color), transparent 68%);
    opacity: 0.8;
}

body::after {
    bottom: -22%;
    left: -10%;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.10), transparent 68%);
}

body.dark-theme::before { opacity: 0.5; }
body.dark-theme::after  { opacity: 0.4; }

/* ===== 4. 头部 ===== */
.site-header {
    backdrop-filter: blur(16px) saturate(1.4);
    -webkit-backdrop-filter: blur(16px) saturate(1.4);
}

.site-branding {
    display: inline-flex;
    align-items: center;
    transition: opacity 0.2s;
}

/* 站点名前的小圆点（有 Logo 图片时不显示） */
@supports selector(:has(*)) {
    .site-branding:not(:has(img))::before {
        content: '';
        width: 10px;
        height: 10px;
        border-radius: 50%;
        margin-right: 10px;
        background: linear-gradient(135deg, var(--theme-color), color-mix(in srgb, var(--theme-color) 70%, #6366f1));
        box-shadow: 0 0 8px var(--focus-shadow-color);
    }
}

.theme-toggle-icon {
    display: inline-block;
    transition: transform 0.3s ease;
}

.theme-toggle:hover .theme-toggle-icon {
    transform: rotate(18deg) scale(1.15);
}

/* ===== 5. Hero 区 ===== */
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
    .hero-title {
        background: linear-gradient(120deg, var(--key-color) 30%, var(--theme-color));
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
        color: transparent;
    }
}

.hero-avatar {
    box-shadow:
        0 0 0 3px var(--main-bg-color),
        0 0 0 6px var(--focus-shadow-color),
        0 12px 28px var(--focus-shadow-color);
    animation: limeFloat 6s ease-in-out infinite;
}

@keyframes limeFloat {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-8px); }
}

/* ===== 6. 按钮 ===== */
.btn {
    letter-spacing: 0.01em;
}

.btn-primary {
    background-color: var(--theme-color);
    background-image: linear-gradient(
        135deg,
        color-mix(in srgb, var(--theme-color) 88%, #fff),
        color-mix(in srgb, var(--theme-color) 85%, #000)
    );
    box-shadow: 0 4px 14px var(--focus-shadow-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px var(--focus-shadow-color);
    opacity: 1;
}

.btn-primary:active {
    transform: translateY(0) scale(0.98);
}

.btn-secondary {
    background: var(--main-bg-color);
    border: 1px solid var(--main-border-color);
}

.btn-secondary:hover {
    border-color: var(--theme-color);
    background: var(--focus-shadow-color);
}

/* ===== 7. 文章卡片 ===== */
.post-card,
.related-post-card {
    border: 1px solid var(--main-border-color);
    border-radius: var(--main-radius);
}

.post-card:hover {
    border-color: var(--focus-shadow-color);
}

.card-thumb {
    position: relative;
}

.card-thumb::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.18), transparent 45%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.post-card:hover .card-thumb::after {
    opacity: 1;
}

/* 分类徽章胶囊 */
.card-cat {
    padding: 2px 10px;
    font-size: 12px;
    background: var(--focus-shadow-color);
    color: var(--theme-color);
    border-radius: 100px;
}

/* 标题下划线生长动效 */
.card-title a,
.related-post-title a {
    background-image: linear-gradient(var(--theme-color), var(--theme-color));
    background-size: 0% 2px;
    background-repeat: no-repeat;
    background-position: 0 100%;
    transition: background-size 0.3s ease;
    padding-bottom: 2px;
}

.card-title a:hover,
.related-post-title a:hover {
    background-size: 100% 2px;
    opacity: 1;
}

.post-card:active {
    transform: translateY(-2px) scale(0.995);
}

/* ===== 8. 归档标题强调条 ===== */
.archive-title {
    position: relative;
    padding-left: 16px;
}

.archive-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 4px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--theme-color), transparent);
}

/* ===== 9. 面包屑分隔符 ===== */
.breadcrumb-item:not(:last-child)::after {
    content: '›';
    font-weight: 600;
}

/* ===== 10. 章节标题渐变短杠 ===== */
.section-title {
    border-bottom: none;
    padding-bottom: 10px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 48px;
    height: 3px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--theme-color), transparent);
}

/* ===== 11. TOC 目录 ===== */
.table-of-contents {
    border-left: 3px solid var(--theme-color);
    backdrop-filter: blur(8px);
}

.toc-item a {
    border-radius: 6px;
    transition: color 0.2s, background 0.2s, border-color 0.2s;
}

.toc-item a:hover {
    background: var(--focus-shadow-color);
    transform: translateX(2px);
}

.toc-list a.active {
    color: var(--theme-color);
    border-left-color: var(--theme-color);
    background: var(--focus-shadow-color);
    font-weight: 500;
}

/* ===== 12. 正文阅读体验 ===== */
.post-content,
.page-content {
    font-size: 16.5px;
}

.post-content h2,
.post-content h3,
.page-content h2,
.page-content h3 {
    letter-spacing: -0.015em;
}

.post-content code,
.page-content code {
    background: var(--focus-shadow-color);
    color: var(--theme-color);
    padding: 2px 7px;
    border-radius: 6px;
}

.post-content pre {
    border: 1px solid var(--main-border-color);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.04);
}

.post-content img {
    box-shadow: 0 4px 16px var(--main-shadow);
}

.post-content blockquote {
    position: relative;
    padding-left: 52px;
}

.post-content blockquote::before {
    content: '\201C';
    position: absolute;
    left: 12px;
    top: -4px;
    font-size: 52px;
    line-height: 1;
    font-family: Georgia, serif;
    color: var(--theme-color);
    opacity: 0.35;
}

.post-content hr {
    border: none;
    height: 2px;
    margin: 2.2em auto;
    max-width: 160px;
    border-radius: 2px;
    background: linear-gradient(90deg, transparent, var(--theme-color), transparent);
}

.post-content tbody tr {
    transition: background 0.15s ease;
}

.post-content tbody tr:hover td {
    background: var(--focus-shadow-color);
}

/* ===== 13. 标签胶囊 ===== */
.post-tags .tag {
    background: transparent;
    border: 1px solid var(--main-border-color);
}

.post-tags .tag:hover {
    border-color: var(--theme-color);
}

/* ===== 14. 分页 ===== */
.pagination .page-numbers {
    border-radius: 100px;
    border: 1px solid transparent;
}

.pagination .page-numbers:hover {
    border-color: var(--focus-shadow-color);
}

.pagination .page-numbers.current {
    box-shadow: 0 4px 12px var(--focus-shadow-color);
}

/* ===== 15. 评论卡片化 ===== */
.comment-list .comment {
    border-bottom: none;
    padding: 10px 0;
}

.comment-list .comment-body {
    background: var(--main-bg-color);
    border: 1px solid var(--muted-border-color);
    border-radius: var(--main-radius);
    padding: 16px 18px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.comment-list .comment-body:hover {
    border-color: var(--focus-shadow-color);
    box-shadow: 0 4px 16px var(--main-shadow);
}

.comment-avatar img {
    box-shadow: 0 0 0 2px var(--focus-shadow-color);
}

.comment-reply-link {
    border: 1px solid var(--muted-border-color);
}

/* ===== 16. 侧边栏小工具卡片化 ===== */
.widget {
    background: var(--main-bg-color);
    border: 1px solid var(--muted-border-color);
    border-radius: var(--main-radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px var(--main-shadow);
}

.widget-title {
    font-size: 15px;
    padding-bottom: 10px;
    margin-bottom: 14px;
    border-bottom: 1px solid var(--muted-border-color);
    position: relative;
}

.widget-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 32px;
    height: 2px;
    background: var(--theme-color);
    border-radius: 2px;
}

.widget-posts li,
.widget-categories li {
    padding: 7px 0;
    border-bottom: 1px dashed var(--muted-border-color);
}

.widget-posts li:last-child,
.widget-categories li:last-child {
    border-bottom: none;
}

.widget-posts a {
    transition: color 0.2s, padding-left 0.2s;
}

.widget-posts a:hover {
    color: var(--theme-color);
    padding-left: 4px;
}

.cat-count {
    font-size: 11px;
    background: var(--muted-bg-color);
    padding: 1px 8px;
    border-radius: 100px;
    color: var(--muted-2-color);
}

/* ===== 17. 返回顶部 & 分享按钮 ===== */
.back-to-top {
    border: 1px solid var(--main-border-color);
    box-shadow: 0 4px 16px var(--main-shadow);
}

.share-btn {
    border: 1px solid var(--muted-border-color);
    background: var(--main-bg-color);
}

/* ===== 18. 页脚渐变顶线 ===== */
.site-footer {
    position: relative;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 10%;
    right: 10%;
    height: 1.5px;
    background: linear-gradient(90deg, transparent, var(--theme-color), transparent);
    opacity: 0.45;
}

/* ===== 19. 阅读进度条发光 ===== */
.reading-progress-bar {
    box-shadow: 0 0 8px var(--focus-shadow-color);
}

/* ===== 20. 移动端菜单滑入动画 ===== */
@keyframes limeSlideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.main-navigation.open {
    animation: limeSlideDown 0.25s ease;
}

/* ===== 21. 深色模式专属微调 ===== */
.dark-theme .post-card,
.dark-theme .related-post-card,
.dark-theme .widget,
.dark-theme .comment-list .comment-body {
    border-color: var(--main-border-color);
}

.dark-theme .card-thumb::after {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.38), transparent 45%);
}

.dark-theme .site-footer::before {
    opacity: 0.3;
}

/* ===== 22. 小屏适配 ===== */
@media (max-width: 768px) {
    body::before,
    body::after {
        width: 260px;
        height: 260px;
        filter: blur(50px);
    }

    .post-content blockquote {
        padding-left: 40px;
    }

    .post-content blockquote::before {
        font-size: 40px;
        left: 8px;
    }

    .widget {
        padding: 16px;
    }
}

/* ===== 23. 减弱动画偏好下关闭浮动 ===== */
@media (prefers-reduced-motion: reduce) {
    .hero-avatar {
        animation: none;
    }

    .main-navigation.open {
        animation: none;
    }
}

/* ═══════════════════════════════════════════════
   Feature Styles — 公告 / 点赞 / 浏览量 / 时间线
   ═══════════════════════════════════════════════ */

/* ===== 公告栏 ===== */
.site-notice {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    font-size: 14px;
    line-height: 1.7;
    background: linear-gradient(90deg, var(--focus-shadow-color), transparent 60%), var(--main-bg-color);
    border-bottom: 1px solid var(--muted-border-color);
    animation: limeSlideDown 0.3s ease;
}

.site-notice.closing {
    opacity: 0;
    transform: translateY(-100%);
    transition: opacity 0.22s ease, transform 0.22s ease;
}

.notice-icon {
    flex-shrink: 0;
    font-size: 18px;
}

.notice-text {
    flex: 1;
    min-width: 0;
    color: var(--main-color);
}

.notice-text p {
    margin: 0;
}

.notice-text p + p {
    margin-top: 4px;
}

.notice-link {
    flex-shrink: 0;
    font-size: 13px;
    font-weight: 500;
    color: var(--theme-color);
    white-space: nowrap;
}

.notice-link:hover {
    opacity: 0.8;
}

.notice-close {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--muted-2-color);
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s;
}

.notice-close:hover {
    background: var(--focus-shadow-color);
    color: var(--theme-color);
}

@media (max-width: 768px) {
    .site-notice {
        padding: 10px 16px;
        font-size: 13px;
        gap: 8px;
    }
}

/* ===== 文章点赞 ===== */
.like-box {
    margin: 40px 0 10px;
    text-align: center;
}

.like-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 34px;
    font-size: 15px;
    font-weight: 500;
    color: var(--main-color);
    background: var(--main-bg-color);
    border: 1px solid var(--main-border-color);
    border-radius: 100px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.like-btn:hover {
    transform: translateY(-2px);
    border-color: var(--theme-color);
    box-shadow: 0 6px 18px var(--focus-shadow-color);
    color: var(--theme-color);
}

.like-btn:focus-visible {
    outline: 2px solid var(--theme-color);
    outline-offset: 2px;
}

.like-btn.sending {
    opacity: 0.6;
    pointer-events: none;
}

.like-btn.liked {
    background: var(--theme-color);
    border-color: var(--theme-color);
    color: #fff;
    box-shadow: 0 6px 18px var(--focus-shadow-color);
}

.like-btn.liked .like-icon {
    animation: limeLikeBounce 0.4s ease;
}

.like-btn.pop {
    animation: limeLikePop 0.4s ease;
}

.like-count {
    font-weight: 700;
    min-width: 1.5em;
    text-align: center;
    font-variant-numeric: tabular-nums;
}

.like-hint {
    margin: 12px 0 0;
    font-size: 13px;
    color: var(--muted-3-color);
}

@keyframes limeLikePop {
    0%   { transform: scale(1); }
    40%  { transform: scale(1.12); }
    100% { transform: scale(1); }
}

@keyframes limeLikeBounce {
    0%   { transform: scale(1) rotate(0); }
    40%  { transform: scale(1.35) rotate(-12deg); }
    100% { transform: scale(1) rotate(0); }
}

/* ===== 浏览量标识 ===== */
.card-views,
.widget-post-meta {
    font-size: 12px;
    color: var(--muted-3-color);
    font-variant-numeric: tabular-nums;
}

.post-views {
    font-size: 13px;
    color: var(--muted-2-color);
    font-variant-numeric: tabular-nums;
}

.widget-popular li {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
}

.widget-popular a {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ===== 页脚运行天数 ===== */
.site-running-days {
    font-variant-numeric: tabular-nums;
}

/* ===== 时间线归档页 ===== */
.timeline-page {
    padding: 40px 0;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-intro {
    font-size: 15px;
    color: var(--muted-color);
    line-height: 1.9;
    margin-bottom: 32px;
}

.timeline {
    position: relative;
    margin-left: 6px;
    padding-left: 28px;
    border-left: 2px solid var(--main-border-color);
}

.timeline-year {
    position: relative;
    margin: 28px 0 12px -40px;
}

.timeline-year-badge {
    display: inline-block;
    padding: 5px 18px;
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    background: var(--theme-color);
    border-radius: 100px;
    box-shadow: 0 4px 14px var(--focus-shadow-color);
    font-variant-numeric: tabular-nums;
}

.timeline-group {
    margin-bottom: 8px;
}

.timeline-item {
    position: relative;
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 8px 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -35px;
    top: 50%;
    transform: translateY(-50%);
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--theme-color);
    box-shadow: 0 0 0 3px var(--focus-shadow-color);
    transition: transform 0.2s ease;
}

.timeline-item:hover::before {
    transform: translateY(-50%) scale(1.4);
}

.timeline-date {
    flex-shrink: 0;
    font-size: 13px;
    color: var(--muted-3-color);
    font-variant-numeric: tabular-nums;
    width: 44px;
}

.timeline-link {
    font-size: 15px;
    color: var(--main-color);
    line-height: 1.6;
    transition: color 0.2s;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.timeline-link:hover {
    color: var(--theme-color);
    opacity: 1;
}

@media (max-width: 768px) {
    .timeline {
        padding-left: 20px;
        margin-left: 2px;
    }

    .timeline-year {
        margin-left: -32px;
    }

    .timeline-item::before {
        left: -27px;
    }

    .timeline-link {
        white-space: normal;
    }
}

/* ===== 减动效 ===== */
@media (prefers-reduced-motion: reduce) {
    .site-notice,
    .like-btn,
    .like-btn.liked .like-icon,
    .like-btn.pop,
    .timeline-item::before {
        animation: none;
        transition: none;
    }
}

/* ===== 阅读时间徽章（文章内容顶部）===== */
.entry-content > .reading-time {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--muted-2-color);
    background: var(--muted-bg-color);
    border: 1px solid var(--muted-border-color);
    border-radius: 100px;
    padding: 5px 14px;
    margin-bottom: 22px;
}

.entry-content > .reading-time::before {
    content: '\23F1';
    font-size: 14px;
}

/* ===== 侧边栏搜索小工具（区块与经典两种标记）===== */
.sidebar .wp-block-search {
    display: flex;
    align-items: stretch;
    gap: 8px;
    margin: 0;
}

.sidebar .wp-block-search .wp-block-search__label {
    display: none;
}

.sidebar .wp-block-search .wp-block-search__input {
    flex: 1;
    min-width: 0;
    height: auto;
    padding: 9px 14px;
    font-size: 13px;
    line-height: 1.5;
    background: var(--muted-bg-color);
    border: 1px solid var(--main-border-color);
    border-radius: 100px;
    color: var(--main-color);
    box-sizing: border-box;
}

.sidebar .wp-block-search .wp-block-search__input:focus {
    outline: none;
    border-color: var(--theme-color);
    box-shadow: 0 0 0 3px var(--focus-shadow-color);
}

.sidebar .wp-block-search .wp-block-search__button {
    flex-shrink: 0;
    margin: 0;
    padding: 9px 18px;
    font-size: 13px;
    line-height: 1.5;
    background: var(--theme-color);
    color: #fff;
    border: none;
    border-radius: 100px;
    cursor: pointer;
    transition: opacity 0.2s;
}

.sidebar .wp-block-search .wp-block-search__button:hover {
    opacity: 0.88;
}

.sidebar .search-form .search-field {
    width: 100%;
    min-width: 0;
}

.sidebar .widget .search-form {
    display: flex;
    gap: 8px;
}

/* ═════════ v1.3.0 修复与补全 ═════════ */

/* 修复：no-sidebar 类在 body 上，原选择器 .layout-wrap.no-sidebar 永不匹配 → "无侧边栏"选项实际无效 */
body.no-sidebar .layout-wrap {
    grid-template-columns: 1fr;
    max-width: 860px;
    margin: 0 auto;
}

body.no-sidebar .layout-wrap .sidebar {
    display: none;
}

/* 通用小工具元素（分类下拉/页面列表/标签云/区块小工具） */
.sidebar .widget ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.sidebar .widget ul li {
    padding: 7px 0;
    border-bottom: 1px dashed var(--muted-border-color);
}

.sidebar .widget ul li:last-child {
    border-bottom: none;
}

.sidebar .widget a {
    color: var(--main-color);
    transition: color 0.2s;
}

.sidebar .widget a:hover {
    color: var(--theme-color);
}

.sidebar .widget select {
    width: 100%;
    padding: 8px 12px;
    font-size: 13px;
    border: 1px solid var(--main-border-color);
    border-radius: var(--main-radius);
    background: var(--main-bg-color);
    color: var(--main-color);
}

.sidebar .tagcloud,
.sidebar .wp-block-tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.sidebar .tagcloud a,
.sidebar .wp-block-tag-cloud a {
    font-size: 12px !important;
    padding: 4px 12px;
    background: var(--muted-bg-color);
    color: var(--muted-color);
    border-radius: 100px;
    transition: background 0.2s, color 0.2s;
}

.sidebar .tagcloud a:hover,
.sidebar .wp-block-tag-cloud a:hover {
    background: var(--focus-shadow-color);
    color: var(--theme-color);
}

.sidebar .wp-block-categories-list,
.sidebar .wp-block-archives-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

/* 置顶徽章 */
.sticky-badge {
    display: inline-block;
    margin-bottom: 8px;
    padding: 2px 10px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    color: #fff;
    background: var(--theme-color);
    border-radius: 100px;
}

/* 页脚社交图标 */
.footer-social {
    margin-top: 4px;
}

.footer-social .social-list {
    justify-content: center;
}

.footer-social .social-link {
    width: 36px;
    height: 36px;
}

/* 404 搜索框 */
.notfound-search {
    max-width: 380px;
    margin: 0 auto;
}

.notfound-search .search-form .search-field {
    width: 100%;
    min-width: 0;
}

/* 图注 */
.post-content figcaption,
.page-content figcaption {
    font-size: 13px;
    color: var(--muted-3-color);
    text-align: center;
    margin-top: 10px;
    line-height: 1.6;
}

/* 密码保护表单 */
.post-password-form input[type="password"] {
    width: 100%;
    max-width: 320px;
    padding: 10px 16px;
    border: 1px solid var(--main-border-color);
    border-radius: var(--main-radius);
    background: var(--main-bg-color);
    color: var(--main-color);
}

.post-password-form input[type="submit"] {
    padding: 10px 26px;
    background: var(--theme-color);
    color: #fff;
    border: none;
    border-radius: 100px;
    cursor: pointer;
    font-size: 14px;
    transition: opacity 0.2s;
}

.post-password-form input[type="submit"]:hover {
    opacity: 0.88;
}