/* ==========================================================================
   简方 JianFang · 布局：顶栏 / Hero / 图文流 / 列表 / 页脚
   ========================================================================== */

/* --------------------------------------------------------------------------
   顶栏
   -------------------------------------------------------------------------- */
.site-header {
    position: relative;
    z-index: 40;
}

.site-header--sticky {
    position: sticky;
    top: 0;
    background: var(--bg-translucent);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition), background var(--transition);
}

.site-header--sticky.is-scrolled {
    border-bottom-color: var(--border);
}

.site-header__inner {
    max-width: var(--page-width);
    height: var(--header-h);
    margin: 0 auto;
    padding: 0 var(--sp-5);
    display: flex;
    align-items: center;
    gap: var(--sp-4);
}

.site-brand {
    display: inline-flex;
    align-items: center;
    margin-right: auto;
    color: var(--text);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 1px;
}

.site-brand:hover {
    color: var(--accent);
}

.site-brand__img {
    height: 26px;
    width: auto;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 22px;
}

.site-nav__item {
    position: relative;
    padding: 4px 0;
    color: var(--text-secondary);
    font-size: 15px;
}

.site-nav__item:hover {
    color: var(--text);
}

.site-nav__item.is-current {
    color: var(--accent);
}

.site-nav__item.is-current::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    border-radius: 2px;
    background: var(--accent);
}

.site-header__actions {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: var(--sp-3);
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    transition: background var(--transition), color var(--transition);
}

.icon-btn:hover {
    background: var(--accent-soft);
    color: var(--accent);
}

.icon-btn--menu {
    display: none;
}

.icon-btn__sun {
    display: none;
}

[data-theme="dark"] .icon-btn__moon {
    display: none;
}

[data-theme="dark"] .icon-btn__sun {
    display: block;
}

/* --------------------------------------------------------------------------
   顶栏搜索面板（内联展开）
   -------------------------------------------------------------------------- */
.search-panel {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 39;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
}

.search-panel__form {
    max-width: var(--page-width);
    margin: 0 auto;
    padding: 0 var(--sp-5) 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--border-strong);
}

.search-panel__icon {
    flex: none;
    color: var(--text-muted);
}

.search-panel__input {
    flex: 1;
    min-width: 0;
    border: 0;
    background: transparent;
    outline: none;
    font-size: 15.5px;
    color: var(--text);
}

.search-panel__input::placeholder {
    color: var(--text-muted);
}

.search-panel__submit {
    flex: none;
    padding: 6px 18px;
    border-radius: var(--radius-full);
    background: var(--accent);
    color: var(--bg);
    font-size: 14px;
    transition: opacity var(--transition);
}

.search-panel__submit:hover {
    opacity: .88;
}

.search-panel[hidden] {
    display: none;
}

/* --------------------------------------------------------------------------
   Hero 大标题区
   -------------------------------------------------------------------------- */
.hero {
    max-width: var(--page-width);
    margin: 0 auto;
    padding: 72px var(--sp-5) 44px;
    text-align: center;
}

.hero__avatar {
    width: 64px;
    height: 64px;
    margin: 0 auto 18px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--border);
}

.hero__title {
    font-size: clamp(28px, 5vw, 44px);
    line-height: 1.28;
    letter-spacing: 2px;
}

.hero__subtitle {
    margin-top: 14px;
    font-size: 17px;
    color: var(--text-secondary);
}

.hero__desc {
    max-width: 560px;
    margin: 10px auto 0;
    font-size: 15px;
    color: var(--text-muted);
}

.hero__actions {
    margin-top: 26px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

/* --------------------------------------------------------------------------
   Hero 背景图（通栏）—— 未设置 heroBgImage 时上面这套纯纸色样式原样生效
   -------------------------------------------------------------------------- */
.hero--bg {
    position: relative;
    max-width: none;
    margin: 0;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    /* min-height: var(--hero-h, 420px); */
    padding: 64px var(--sp-5);
    overflow: hidden;
    background: var(--bg-subtle);

    /* 默认：黑遮罩 + 反白文字（霞鹜文楷笔画细，靠遮罩保可读性） */
    --hero-mask: #000;
    --hero-fg: #ffffff;
    --hero-fg-2: rgba(255, 255, 255, .84);
    --hero-fg-3: rgba(255, 255, 255, .72);
    --hero-line: rgba(255, 255, 255, .45);
    --hero-btn-bg: #ffffff;
    --hero-btn-fg: #1b1a20;
}

.hero--bg .hero__inner {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: var(--page-width);
    margin: 0 auto;
}

.hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero__bg img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* 纯装饰性背景图：禁止拖拽与选中，避免拖出幽灵图 / 高亮 */
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
}

.hero__mask {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: var(--hero-mask, #000);
    opacity: var(--hero-overlay, .5);
    pointer-events: none;
}

.hero--bg .hero__title { color: var(--hero-fg); }
.hero--bg .hero__subtitle { color: var(--hero-fg-2); }
.hero--bg .hero__desc { color: var(--hero-fg-3); }
.hero--bg .hero__avatar { border-color: var(--hero-line); }

.hero--bg .hero__btn {
    border-color: var(--hero-line);
    color: var(--hero-fg);
}

.hero--bg .hero__btn:hover {
    border-color: var(--hero-fg);
    color: var(--hero-fg);
    background: rgba(255, 255, 255, .12);
}

.hero--bg .hero__btn--primary {
    background: var(--hero-btn-bg);
    border-color: var(--hero-btn-bg);
    color: var(--hero-btn-fg);
}

.hero--bg .hero__btn--primary:hover {
    background: var(--hero-btn-bg);
    border-color: var(--hero-btn-bg);
    color: var(--hero-btn-fg);
    opacity: .86;
}

/* 浅色底图：改白遮罩 + 深色字 */
.hero--on-light {
    --hero-mask: #ffffff;
    --hero-fg: var(--text);
    --hero-fg-2: var(--text-secondary);
    --hero-fg-3: var(--text-muted);
    --hero-line: var(--border-strong);
    --hero-btn-bg: var(--accent);
    --hero-btn-fg: #ffffff;
}

.hero--on-light .hero__btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: transparent;
}

/* 暗色模式下即使选了「深色字」也强制反白，避免浅遮罩上出现浅色字 */
[data-theme="dark"] .hero--on-light {
    --hero-mask: #000000;
    --hero-fg: #ffffff;
    --hero-fg-2: rgba(255, 255, 255, .84);
    --hero-fg-3: rgba(255, 255, 255, .72);
    --hero-line: rgba(255, 255, 255, .45);
    --hero-btn-bg: #ffffff;
    --hero-btn-fg: #1b1a20;
}

[data-theme="dark"] .hero--on-light .hero__btn:hover {
    border-color: #ffffff;
    color: #ffffff;
    background: rgba(255, 255, 255, .12);
}

/* --------------------------------------------------------------------------
   文章流 / 条目
   -------------------------------------------------------------------------- */
.post-stream {
    max-width: var(--page-width);
    margin: 0 auto;
    padding: 0 var(--sp-5);
}


.entry {
    display: block;
    padding: 30px 0;
}

.entry__cover {
    display: block;
    margin-bottom: 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg-subtle);
}

.entry__cover img {
    width: 100%;
    aspect-ratio: var(--cover-ratio, 16 / 9);
    object-fit: cover;
    transition: transform 280ms ease;
}

.entry__cover:hover img {
    transform: scale(1.015);
}

.entry__title {
    font-size: 20px;
    line-height: 1.5;
}

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

.entry__title a:hover {
    color: var(--accent);
}

.entry__excerpt {
    margin-top: 10px;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.75;
}

.entry__date {
    color: var(--text-muted);
    margin-right: 2px;
}

.entry__meta {
    margin-top: 12px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    font-size: 13.5px;
    color: var(--text-muted);
}

.entry__meta a {
    color: var(--text-muted);
}

.entry__meta a:hover {
    color: var(--accent);
}

.entry__meta:empty {
    display: none;
}

.entry__sep {
    opacity: .6;
}

/* 纯文本列表（tw93 风） */
.post-stream--text .entry {
    padding: 26px 0;
}

.post-stream--text .entry:first-child {
    padding-top: 6px;
}

.post-stream--text .entry__title {
    font-size: 21px;
}

/* --------------------------------------------------------------------------
   归档页头 + 搜索
   -------------------------------------------------------------------------- */
.archive-head {
    max-width: var(--page-width);
    margin: 0 auto;
    padding: 52px var(--sp-5) 6px;
}

.archive-head__title {
    font-size: 24px;
    line-height: 1.4;
}

.search-form {
    margin-top: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-strong);
}

.search-form__input {
    flex: 1;
    min-width: 0;
    border: 0;
    background: transparent;
    outline: none;
    font-size: 15px;
}

.search-form__input::placeholder {
    color: var(--text-muted);
}

.search-form__btn {
    color: var(--text-muted);
}

.search-form__btn:hover {
    color: var(--accent);
}

/* --------------------------------------------------------------------------
   分页
   -------------------------------------------------------------------------- */
.pager {
    max-width: var(--page-width);
    margin: 52px auto 0;
    padding: 0 var(--sp-5);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-4);
    font-size: 14px;
    color: var(--text-muted);
}

.pager a {
    color: var(--text-secondary);
}

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

.pager .is-disabled {
    opacity: .38;
}

.pager__info {
    font-size: 13px;
}

/* --------------------------------------------------------------------------
   空状态 / 404
   -------------------------------------------------------------------------- */
.empty-state,
.error-page {
    max-width: var(--page-width);
    margin: 0 auto;
    padding: 64px var(--sp-5);
    text-align: center;
}

.empty-state__title,
.error-page__title {
    font-size: 19px;
}

.empty-state__desc,
.error-page__desc {
    margin-top: 10px;
    font-size: 15px;
    color: var(--text-muted);
}

.empty-state .hero__btn,
.error-page__actions {
    margin-top: 24px;
}

.error-page__code {
    font-size: 72px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: 4px;
    color: var(--accent);
}

.error-page__title {
    margin-top: 18px;
}

/* --------------------------------------------------------------------------
   页脚 / 备案合规区
   -------------------------------------------------------------------------- */
.site-footer {
    margin-top: 72px;
    border-top: 1px solid var(--border);
    background: var(--bg-subtle);
}

.site-footer__inner {
    max-width: var(--page-width);
    margin: 0 auto;
    padding: 40px var(--sp-5) 48px;
    text-align: center;
    font-size: 13.5px;
    line-height: 1.95;
    color: var(--text-secondary);
}

.site-footer__brand {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text);
}

.site-footer__intro {
    margin-top: 8px;
    font-size: 13.5px;
    color: var(--text-muted);
}

.site-footer__links {
    margin-top: 14px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px 16px;
    justify-content: center;
    color: var(--text-muted);
}

.site-footer__links a,
.site-footer__links .site-footer__contact {
    color: var(--text-muted);
}

.site-footer__links a:hover {
    color: var(--accent);
}

.site-footer__custom {
    margin-top: 14px;
}

.site-footer__rule {
    height: 1px;
    max-width: 320px;
    margin: 22px auto;
    background: var(--border);
}

.site-footer__owner {
    margin: 0 4px;
}

.site-footer__beian {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 6px 18px;
    font-size: 13px;
}

.site-footer__beian-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
}

.site-footer__beian-item:hover {
    color: var(--accent);
}

.site-footer__police-icon {
    width: 14px;
    height: 15px;
    opacity: .85;
}

.site-footer__beian--extra {
    display: block;
    font-size: 12.5px;
}

.site-footer__badge {
    display: inline-block;
    margin-top: 12px;
    padding: 2px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 12.5px;
    color: var(--text-muted);
}

.site-footer__powered {
    margin-top: 20px;
    font-size: 12.5px;
    color: var(--text-muted);
}

/* 仅保留署名行时（备案区已关闭）收窄页脚留白 */
.site-footer--minimal .site-footer__inner {
    padding-top: 20px;
    padding-bottom: 24px;
}

.site-footer--minimal .site-footer__powered {
    margin-top: 0;
}

/* 关闭「站名信息块」时（品牌 / 简介 / 邮箱与链接 / 自定义内容 / 分割线均不输出）收窄上留白 */
.site-footer--no-brand .site-footer__inner {
    padding-top: 28px;
}

.site-footer__powered a {
    color: var(--text-muted);
}

.site-footer__powered a:hover {
    color: var(--accent);
}

/* --------------------------------------------------------------------------
   时间归档页
   -------------------------------------------------------------------------- */
.archive-head__desc {
    margin-top: 10px;
    font-size: 14px;
    color: var(--text-muted);
}

.archive-list {
    max-width: var(--page-width);
    margin: 0 auto;
    padding: 26px var(--sp-5) 0;
}

.archive-year {
    padding: 30px 0 6px;
    border-top: 1px solid var(--border);
}

.archive-year:first-child {
    border-top: 0;
    padding-top: 8px;
}

.archive-year__title {
    font-size: 26px;
    letter-spacing: 2px;
    color: var(--accent);
}

.archive-month {
    margin-top: 22px;
    display: grid;
    grid-template-columns: 62px minmax(0, 1fr);
    gap: 6px 14px;
}

.archive-month__label {
    padding-top: 3px;
    font-size: 13.5px;
    color: var(--text-muted);
}

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

.archive-item {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    padding: 5px 0;
}

.archive-item__link {
    font-size: 15.5px;
    color: var(--text);
}

.archive-item__link:hover {
    color: var(--accent);
}

.archive-item__date {
    flex: none;
    font-size: 12.5px;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------------------
   标签云页
   -------------------------------------------------------------------------- */
.tag-cloud {
    max-width: var(--page-width);
    margin: 0 auto;
    padding: 30px var(--sp-5) 0;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 12px;
}

.tag-cloud__item {
    display: inline-flex;
    align-items: baseline;
    gap: 5px;
    padding: 5px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 14.5px;
    line-height: 1.7;
    color: var(--text-secondary);
    background: var(--bg-elevated);
    transition: border-color var(--transition), color var(--transition), transform var(--transition);
}

.tag-cloud__item:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
}

.tag-cloud__count {
    font-size: 11.5px;
    color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   独立搜索页
   -------------------------------------------------------------------------- */
.search-page {
    max-width: var(--page-width);
    margin: 0 auto;
    padding: 72px var(--sp-5) 0;
    text-align: center;
}

.search-page__title {
    font-size: clamp(24px, 4vw, 32px);
    letter-spacing: 2px;
}

.search-page__desc {
    margin-top: 12px;
    font-size: 15px;
    color: var(--text-muted);
}

.search-page__form {
    margin: 32px auto 0;
    max-width: 520px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 6px 6px 18px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-full);
    background: var(--bg-elevated);
    transition: border-color var(--transition);
}

.search-page__form:focus-within {
    border-color: var(--accent);
}

.search-page__input {
    flex: 1;
    min-width: 0;
    border: 0;
    background: transparent;
    outline: none;
    font-size: 15.5px;
}

.search-page__input::placeholder {
    color: var(--text-muted);
}

.search-page__submit {
    flex: none;
    padding: 8px 22px;
    border-radius: var(--radius-full);
    background: var(--accent);
    color: var(--bg);
    font-size: 14.5px;
    transition: opacity var(--transition);
}

.search-page__submit:hover {
    opacity: .88;
}

.search-page__tags {
    margin-top: 44px;
}

.search-page__tags-title {
    font-size: 13px;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.search-page__tags .tag-cloud {
    padding: 16px 0 0;
    justify-content: center;
}

/* --------------------------------------------------------------------------
   回到顶部
   -------------------------------------------------------------------------- */
.go-top {
    position: fixed;
    right: 24px;
    bottom: 28px;
    z-index: 30;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: var(--bg-elevated);
    color: var(--text-secondary);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition), color var(--transition), border-color var(--transition);
}

.go-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: none;
}

.go-top:hover {
    color: var(--accent);
    border-color: var(--accent);
}

/* --------------------------------------------------------------------------
   响应式
   -------------------------------------------------------------------------- */
@media (max-width: 860px) {
    .site-nav {
        position: absolute;
        left: 0;
        right: 0;
        top: 100%;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 6px var(--sp-5) 14px;
        background: var(--bg-elevated);
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
    }

    .site-nav.is-open {
        display: flex;
    }

    .site-nav__item {
        padding: 11px 0;
        font-size: 16px;
    }

    .site-nav__item.is-current::after {
        display: none;
    }

    .icon-btn--menu {
        display: inline-flex;
    }
}

@media (max-width: 640px) {
    .hero {
        padding: 52px 18px 34px;
    }

    .hero--bg {
        /* min-height: min(var(--hero-h, 420px), 60vh); */
        padding: 46px 18px 40px;
    }

    .hero__title {
        letter-spacing: 1px;
    }

    .post-stream,
    .archive-head,
    .archive-list,
    .tag-cloud,
    .search-page,
    .pager,
    .empty-state,
    .error-page {
        padding-left: 18px;
        padding-right: 18px;
    }

    .archive-month {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .archive-month__label {
        padding-top: 12px;
    }

    .archive-year__title {
        font-size: 22px;
    }

    .search-page {
        padding-top: 52px;
    }

    .entry {
        padding: 24px 0;
    }

    .entry__title,
    .post-stream--text .entry__title {
        font-size: 18.5px;
    }

    .site-footer__inner {
        padding-left: 18px;
        padding-right: 18px;
    }

    .go-top {
        right: 16px;
        bottom: 18px;
    }
}