/* ===========================================================
   Ech0 风格 MWeb 主题
   =========================================================== */

:root {
    --accent: #f97316;
    --accent-soft: #f973161a;
    --bg: #fafaf9;
    --bg-card: #ffffff;
    --bg-elev: #f5f5f4;
    --border: #e7e5e4;
    --border-strong: #d6d3d1;
    --text: #1c1917;
    --text-soft: #57534e;
    --text-mute: #a8a29e;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 4px 16px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 2px 4px rgba(0, 0, 0, 0.05), 0 12px 32px rgba(0, 0, 0, 0.06);
    --radius: 14px;
    --radius-sm: 8px;
    --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
        sans-serif;
    --font-mono: "SF Mono", "JetBrains Mono", Menlo, Consolas,
        "Liberation Mono", monospace;
}

html[data-theme="dark"] {
    --accent: #fb923c;
    --accent-soft: #fb923c1f;
    --bg: #0c0a09;
    --bg-card: #1c1917;
    --bg-elev: #292524;
    --border: #292524;
    --border-strong: #44403c;
    --text: #fafaf9;
    --text-soft: #d6d3d1;
    --text-mute: #78716c;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-hover: 0 2px 4px rgba(0, 0, 0, 0.4), 0 12px 32px rgba(0, 0, 0, 0.3);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.25s ease, color 0.25s ease;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: opacity 0.15s ease;
}

a:hover {
    opacity: 0.75;
}

img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
}

hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2em 0;
}

/* ---------- 顶部导航 ---------- */
.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in srgb, var(--bg) 85%, transparent);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--border);
}

.topbar-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    font-weight: 700;
    font-size: 17px;
    letter-spacing: 0.2px;
}

.brand .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-soft);
}

.nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav a {
    color: var(--text-soft);
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
}

.nav a:hover {
    background: var(--bg-elev);
    opacity: 1;
    color: var(--text);
}

.theme-toggle {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-soft);
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-left: 6px;
}

.theme-toggle:hover {
    border-color: var(--border-strong);
    color: var(--text);
    transform: rotate(15deg);
}

.theme-toggle svg {
    width: 16px;
    height: 16px;
}

html[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}
html[data-theme="dark"] .theme-toggle .icon-moon {
    display: none;
}
html:not([data-theme="dark"]) .theme-toggle .icon-sun {
    display: none;
}
html:not([data-theme="dark"]) .theme-toggle .icon-moon {
    display: block;
}

/* ---------- 主布局 ---------- */
.layout {
    max-width: 1100px;
    margin: 0 auto;
    padding: 32px 24px 64px;
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    grid-template-areas: "sidebar main";
    gap: 32px;
    align-items: start;
}

.layout > .sidebar {
    grid-area: sidebar;
    min-width: 0;
}

.layout > .main {
    grid-area: main;
    min-width: 0;
}

@media (max-width: 880px) {
    .layout {
        grid-template-columns: 1fr;
        grid-template-areas:
            "sidebar"
            "main";
        padding: 20px 16px 48px;
        gap: 20px;
    }
}

/* ---------- 侧边栏：个人卡片 ---------- */
.sidebar {
    position: sticky;
    top: 80px;
    align-self: start;
}

@media (max-width: 880px) {
    .sidebar {
        position: static;
    }
}

.profile {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 22px;
    box-shadow: var(--shadow);
    text-align: center;
}

.profile-avatar {
    width: 84px;
    height: 84px;
    border-radius: 50%;
    margin: 0 auto 14px;
    border: 3px solid var(--bg-card);
    outline: 1px solid var(--border);
    object-fit: cover;
    background: var(--bg-elev);
}

.profile-name {
    font-size: 20px;
    font-weight: 700;
    margin: 0 0 4px;
    color: var(--text);
}

.profile-bio {
    font-size: 13px;
    color: var(--text-soft);
    margin: 0 0 16px;
    line-height: 1.5;
}

.profile-stats {
    display: flex;
    justify-content: center;
    gap: 18px;
    padding: 14px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-bottom: 16px;
}

.profile-stats .stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.profile-stats .stat-num {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    font-family: var(--font-mono);
}

.profile-stats .stat-label {
    font-size: 11px;
    color: var(--text-mute);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    margin-top: 2px;
}

.profile-links {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.profile-links a {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--bg-elev);
    color: var(--text-soft);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.18s ease;
}

.profile-links a:hover {
    background: var(--accent);
    color: #fff;
    opacity: 1;
    transform: translateY(-2px);
}

.profile-links svg {
    width: 16px;
    height: 16px;
}

/* 侧边栏小节 */
.side-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    margin-top: 16px;
    box-shadow: var(--shadow);
}

.side-card-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-mute);
    margin: 0 0 12px;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tag-cloud a {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--bg-elev);
    color: var(--text-soft);
    border: 1px solid transparent;
    transition: all 0.15s ease;
}

.tag-cloud a:hover {
    border-color: var(--accent);
    color: var(--accent);
    opacity: 1;
}

.tag-cloud .count {
    color: var(--text-mute);
    font-size: 11px;
    margin-left: 3px;
}

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

.recent-list li {
    margin-bottom: 10px;
    line-height: 1.4;
}

.recent-list li:last-child {
    margin-bottom: 0;
}

.recent-list a {
    color: var(--text-soft);
    font-size: 13px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.recent-list a:hover {
    color: var(--accent);
    opacity: 1;
}

/* ---------- 主内容区 ---------- */
.main {
    min-width: 0;
}

.timeline-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
    padding: 0 4px;
}

.timeline-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-soft);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.timeline-title::before {
    content: "";
    width: 4px;
    height: 14px;
    background: var(--accent);
    border-radius: 2px;
}

.timeline-count {
    font-size: 12px;
    color: var(--text-mute);
    font-family: var(--font-mono);
}

/* ---------- 时间线卡片 ---------- */
.echo-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.echo {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px 24px;
    box-shadow: var(--shadow);
    transition: transform 0.18s ease, box-shadow 0.18s ease,
        border-color 0.18s ease;
    position: relative;
    overflow: hidden;
    max-height: 320px;
    display: flex;
    flex-direction: column;
}

.echo:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    border-color: var(--border-strong);
}

.echo-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    color: var(--text-mute);
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.echo-meta time {
    font-family: var(--font-mono);
}

.echo-meta .sep {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: var(--text-mute);
    opacity: 0.5;
}

.echo-meta .cat {
    color: var(--accent);
    font-weight: 600;
}

.echo-title {
    font-size: 20px;
    font-weight: 700;
    margin: 0 0 10px;
    line-height: 1.35;
    letter-spacing: -0.2px;
}

.echo-title a {
    color: var(--text);
}

.echo-title a:hover {
    color: var(--accent);
    opacity: 1;
}

.echo-excerpt {
    color: var(--text-soft);
    font-size: 14.5px;
    line-height: 1.7;
    margin: 0;
    overflow: hidden;
    word-break: break-word;
    overflow-wrap: anywhere;
    max-height: 7em;
    position: relative;
}

.echo-excerpt::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2.4em;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        var(--bg-card) 95%
    );
    pointer-events: none;
}

.echo-excerpt > * {
    margin: 0 0 0.5em !important;
    padding: 0 !important;
}

.echo-excerpt > *:last-child {
    margin-bottom: 0 !important;
}

.echo-excerpt p {
    margin: 0 0 0.5em;
    font-size: inherit;
    line-height: inherit;
    color: inherit;
}

.echo-excerpt h1,
.echo-excerpt h2,
.echo-excerpt h3,
.echo-excerpt h4,
.echo-excerpt h5,
.echo-excerpt h6 {
    font-size: 14.5px !important;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 0.4em !important;
    border: none !important;
    padding: 0 !important;
    line-height: 1.5 !important;
}

.echo-excerpt pre,
.echo-excerpt code {
    display: none;
}

.echo-excerpt blockquote {
    margin: 0.4em 0 !important;
    padding: 0 0.8em !important;
    border-left: 2px solid var(--border-strong);
    background: transparent !important;
    color: var(--text-mute);
    font-size: 13.5px;
    border-radius: 0 !important;
}

.echo-excerpt img,
.echo-excerpt video,
.echo-excerpt iframe,
.echo-excerpt table,
.echo-excerpt figure,
.echo-excerpt .octicon,
.echo-excerpt .anchor {
    display: none !important;
}

.echo-excerpt ul,
.echo-excerpt ol {
    margin: 0.3em 0 0.5em !important;
    padding-left: 1.4em !important;
}

.echo-excerpt li {
    margin: 0 !important;
    line-height: 1.6;
}

.echo-excerpt a {
    color: var(--text-soft);
    text-decoration: none;
    pointer-events: none;
    border-bottom: none !important;
}

.echo-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 14px;
}

.echo-tags:empty {
    display: none;
}

.echo-tags a {
    font-size: 12px;
    color: var(--text-mute);
    padding: 2px 8px;
    border-radius: 4px;
    background: var(--bg-elev);
    transition: all 0.15s ease;
}

.echo-tags a:hover {
    color: var(--accent);
    background: var(--accent-soft);
    opacity: 1;
}

.echo-readmore {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 14px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
}

.echo-readmore:hover {
    gap: 8px;
    opacity: 1;
}

/* ---------- 翻页 ---------- */
.pager {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 28px;
}

.pager a {
    padding: 8px 18px;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--text-soft);
    font-size: 13px;
    background: var(--bg-card);
    transition: all 0.15s ease;
}

.pager a[href=""],
.pager a:not([href]) {
    display: none;
}

.pager a:hover {
    border-color: var(--accent);
    color: var(--accent);
    opacity: 1;
}

/* ---------- 文章详情页 ---------- */
.post {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 40px;
    box-shadow: var(--shadow);
}

@media (max-width: 600px) {
    .post {
        padding: 24px 20px;
    }
}

.post-header {
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.post-title {
    font-size: 28px;
    font-weight: 800;
    line-height: 1.3;
    margin: 0 0 12px;
    letter-spacing: -0.4px;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-mute);
    flex-wrap: wrap;
}

.post-meta .cat {
    color: var(--accent);
    font-weight: 600;
}

.post-meta time {
    font-family: var(--font-mono);
}

.post-content {
    font-size: 15.5px;
    line-height: 1.85;
    color: var(--text);
    word-break: break-word;
}

.post-content .anchor,
.post-content .octicon {
    display: none;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
    font-weight: 700;
    line-height: 1.4;
    margin: 1.6em 0 0.6em;
    letter-spacing: -0.2px;
}

.post-content h1 {
    font-size: 1.6em;
}
.post-content h2 {
    font-size: 1.4em;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.3em;
}
.post-content h3 {
    font-size: 1.2em;
}
.post-content h4 {
    font-size: 1.05em;
}

.post-content p {
    margin: 0 0 1.1em;
}

.post-content blockquote {
    margin: 1.2em 0;
    padding: 0.4em 1em;
    border-left: 3px solid var(--accent);
    background: var(--accent-soft);
    color: var(--text-soft);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.post-content blockquote p:last-child {
    margin-bottom: 0;
}

.post-content code {
    font-family: var(--font-mono);
    font-size: 0.88em;
    padding: 2px 6px;
    border-radius: 4px;
    background: var(--bg-elev);
    color: #d97706;
}

html[data-theme="dark"] .post-content code {
    color: #fbbf24;
}

.post-content pre {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px 18px;
    overflow-x: auto;
    margin: 1.2em 0;
    line-height: 1.6;
}

.post-content pre code {
    background: transparent;
    padding: 0;
    color: var(--text);
    font-size: 0.92em;
}

.post-content ul,
.post-content ol {
    padding-left: 1.6em;
    margin: 0 0 1.1em;
}

.post-content li {
    margin-bottom: 0.4em;
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.2em 0;
    font-size: 0.95em;
}

.post-content th,
.post-content td {
    border: 1px solid var(--border);
    padding: 8px 12px;
    text-align: left;
}

.post-content th {
    background: var(--bg-elev);
    font-weight: 600;
}

.post-content img {
    display: block;
    margin: 1.2em auto;
    box-shadow: var(--shadow);
}

.post-content a {
    border-bottom: 1px dashed var(--accent);
}

.post-content a:hover {
    border-bottom-style: solid;
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.post-tags a {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--bg-elev);
    color: var(--text-soft);
    border-bottom: none;
}

.post-tags a:hover {
    background: var(--accent);
    color: #fff;
    opacity: 1;
}

/* 文章导航（上一篇/下一篇） */
.post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 18px;
}

@media (max-width: 600px) {
    .post-nav {
        grid-template-columns: 1fr;
    }
}

.post-nav a {
    display: block;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 18px;
    color: var(--text-soft);
    font-size: 13px;
    transition: all 0.15s ease;
}

.post-nav a:hover {
    border-color: var(--accent);
    color: var(--accent);
    opacity: 1;
    transform: translateY(-1px);
}

.post-nav .label {
    display: block;
    font-size: 11px;
    color: var(--text-mute);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    margin-bottom: 4px;
}

.post-nav .next {
    text-align: right;
}

/* ---------- 归档页 ---------- */
.archive-year {
    font-size: 22px;
    font-weight: 700;
    margin: 28px 0 12px;
    color: var(--text);
    font-family: var(--font-mono);
    letter-spacing: -0.3px;
}

.archive-year:first-child {
    margin-top: 0;
}

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

.archive-list li {
    display: flex;
    align-items: baseline;
    gap: 14px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}

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

.archive-list .date {
    color: var(--text-mute);
    font-size: 13px;
    font-family: var(--font-mono);
    flex-shrink: 0;
    width: 56px;
}

.archive-list a {
    color: var(--text);
    flex: 1;
}

.archive-list a:hover {
    color: var(--accent);
    opacity: 1;
}

/* ---------- 页脚 ---------- */
.footer {
    text-align: center;
    color: var(--text-mute);
    font-size: 12.5px;
    padding: 28px 16px 36px;
    border-top: 1px solid var(--border);
    margin-top: 40px;
}

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

.footer .heart {
    color: var(--accent);
    font-style: normal;
}

/* ---------- 工具 ---------- */
.empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-mute);
    font-size: 14px;
}

::selection {
    background: var(--accent-soft);
    color: var(--accent);
}