/* ======== 博客样式 — 清新绿植 ======== */
:root {
  --bl-bg: #f5faf3;
  --bl-panel: #ffffff;
  --bl-border: #d4e8d0;
  --bl-text: #2e3b2c;
  --bl-muted: #7a8e75;
  --bl-accent: #4a9c5d;
  --bl-accent-light: #e8f5e9;
  --bl-warm: #e8a838;
  --bl-code-bg: #f0f5ed;
  --bl-radius: 10px;
  --bl-shadow: 0 2px 12px rgba(76, 140, 74, 0.08);
  --bl-sidebar-w: 260px;
  --bl-font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

body.pg-blog {
  font-family: var(--bl-font);
  background: var(--bl-bg);
  color: var(--bl-text);
  line-height: 1.7;
  min-height: 100vh;
}

/* ---- 悬浮侧边栏 ---- */
.blog-sidebar {
  position: fixed; top: 0; left: 0; height: 100vh;
  width: var(--bl-sidebar-w); z-index: 200;
  background: var(--bl-panel);
  box-shadow: 4px 0 24px rgba(0,0,0,0.12);
  border-right: 1px solid var(--bl-border);
  padding: 28px 18px;
  overflow-y: auto;
  transform: translateX(0);
  transition: transform .25s ease;
}
.blog-sidebar:not(.open) {
  transform: translateX(-100%);
  box-shadow: none;
}
.blog-sidebar .toggle-icon { transition: transform .25s; display: inline-block; }
.blog-sidebar:not(.open) .toggle-icon { transform: rotate(180deg); }

/* 折叠箭头 — 绿色小色块嵌在侧栏边缘 */
.blog-sidebar-toggle {
  position: fixed; top: 50%;
  transform: translateY(-50%);
  width: 18px; height: 44px;
  background: var(--bl-accent);
  border: none;
  border-radius: 0 6px 6px 0;
  cursor: pointer; z-index: 201;
  padding: 0; margin: 0;
  display: flex; align-items: center; justify-content: center;
  transition: left .25s ease, opacity .25s, background .25s;
  opacity: 0.6;
  box-shadow: 0 2px 8px rgba(74,156,93,0.25);
}
.blog-sidebar-toggle:hover { opacity: 1; }
.blog-sidebar-toggle .toggle-icon {
  font-size: 0.75rem; color: #fff;
  transition: transform .25s; display: inline-block;
  line-height: 1;
}

/* 展开态：色块贴在侧栏右边，方角贴侧栏、圆角朝外 */
.blog-sidebar.open ~ .blog-sidebar-toggle {
  left: calc(var(--bl-sidebar-w) - 2px);
  border-radius: 0 6px 6px 0;
}

/* 收起态：色块靠在屏幕左边 */
.blog-sidebar:not(.open) ~ .blog-sidebar-toggle {
  left: 0;
  border-radius: 0 6px 6px 0;
  background: var(--bl-accent);
  opacity: 0.7;
}
.blog-sidebar:not(.open) ~ .blog-sidebar-toggle:hover { opacity: 1; }

/* 遮罩 */
.blog-sidebar-backdrop {
  display: none;
  position: fixed; inset: 0; z-index: 199;
  background: rgba(0,0,0,0.25);
}
.blog-sidebar-backdrop.show { display: block; }

/* 主区 */
.blog-main {
  padding: 36px 48px;
  /* 不限制最大宽度，由 grid auto-fill 自然控制 */
  margin-left: var(--bl-sidebar-w);
  transition: margin-left .25s;
}
.blog-sidebar:not(.open) ~ .blog-main { margin-left: 0; }

/* 文章列表：固定 720px 卡片，auto-fill 自动列数，居中 */
.blog-main.list-view {
  display: grid;
  grid-template-columns: repeat(auto-fill, 720px);
  gap: 24px 28px;
  justify-content: center;
}

/* ---- 侧栏内容 ---- */
.blog-brand {
  display: inline-block;
  color: var(--bl-muted);
  text-decoration: none;
  font-size: 0.85rem;
  margin-bottom: 20px;
  transition: color .2s;
}
.blog-brand:hover { color: var(--bl-accent); }

.blog-nav-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bl-muted);
  margin-bottom: 12px;
}

.blog-cat-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.blog-cat-list li {
  padding: 12px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.93rem;
  color: var(--bl-text);
  transition: all .15s;
  min-height: 44px;
  display: flex; align-items: center;
}
/* 父分类展开/折叠 */
/* 搜索框 */
.blog-search {
  width: 100%; padding: 9px 36px 9px 12px; min-height: 44px;
  border: 1px solid var(--bl-border); border-radius: 6px;
  font-size: 0.88rem; background: var(--bl-bg);
  color: var(--bl-text); font-family: var(--bl-font);
}
.blog-search::placeholder { color: var(--bl-muted); }

.bl-cat-parent {
  font-weight: 600;
}
.bl-cat-arrow {
  display: inline-block; width: 18px; font-size: 0.75rem; margin-right: 4px; transition: transform .15s;
}
.bl-cat-children {
  list-style: none; padding-left: 24px;
}
.bl-cat-children li {
  font-size: 0.88rem; padding: 8px 12px; font-weight: normal;
}
.blog-cat-list li:hover { background: var(--bl-accent-light); }
.blog-cat-list li.active { background: var(--bl-accent); color: #fff; }

.blog-side-actions {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--bl-border);
}

.btn-side {
  display: block;
  width: 100%;
  padding: 11px;
  min-height: 44px;
  border: 1px solid var(--bl-border);
  border-radius: 6px;
  background: var(--bl-panel);
  color: var(--bl-accent);
  cursor: pointer;
  font-size: 0.85rem;
  text-align: center;
  transition: all .15s;
}
.btn-side:hover { background: var(--bl-accent-light); }
.btn-side + .btn-side { margin-top: 8px; }

/* ---- 文章列表 ---- */
.post-list-item {
  padding: 20px 0;
  min-height: 44px;
  border-bottom: 1px solid var(--bl-border);
  cursor: pointer;
  transition: background .15s;
}
.post-list-item:hover { background: var(--bl-accent-light); border-radius: var(--bl-radius); padding-left: 12px; padding-right: 12px; }

.post-list-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--bl-text);
  margin-bottom: 6px;
}
.post-list-pin {
  display: inline-block; background: var(--bl-warm); color: #fff;
  padding: 1px 8px; border-radius: 8px; font-size: 0.7rem;
  margin-right: 6px; vertical-align: middle;
}

.post-list-meta {
  display: flex;
  gap: 14px;
  font-size: 0.82rem;
  color: var(--bl-muted);
  flex-wrap: wrap;
}

.post-list-tag {
  display: inline-block;
  background: var(--bl-accent-light);
  color: var(--bl-accent);
  padding: 1px 8px;
  border-radius: 10px;
  font-size: 0.75rem;
}

/* ---- 文章详情 ---- */
/* 限制行宽，提升阅读体验 */
.blog-main.article-view {
  max-width: 760px;
  margin-left: auto; margin-right: auto;
}
@media (min-width: 1281px) {
  .blog-main.article-view {
    max-width: 760px;
    margin-left: calc(var(--bl-sidebar-w) + (100vw - var(--bl-sidebar-w) - 760px) / 2);
  }
}
.blog-sidebar:not(.open) ~ .blog-main.article-view {
  margin-left: auto; margin-right: auto;
}
@media (min-width: 1281px) {
  .blog-sidebar:not(.open) ~ .blog-main.article-view {
    margin-left: calc((100vw - 760px) / 2);
  }
}
.article-header {
  margin-bottom: 28px;
}

.article-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--bl-text);
  line-height: 1.3;
  margin-bottom: 10px;
}

.article-meta {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--bl-muted);
  flex-wrap: wrap;
  align-items: center;
}

.article-tag {
  display: inline-block;
  background: var(--bl-accent-light);
  color: var(--bl-accent);
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.78rem;
}

.article-content {
  font-size: 1rem;
  line-height: 1.85;
  color: #333;
}

.article-content h1 { font-size: 1.6rem; margin: 28px 0 12px; }
.article-content h2 { font-size: 1.35rem; margin: 24px 0 10px; border-bottom: 1px solid var(--bl-border); padding-bottom: 6px; }
.article-content h3 { font-size: 1.15rem; margin: 18px 0 8px; }
.article-content p { margin: 10px 0; }
.article-content ul, .article-content ol { padding-left: 24px; margin: 8px 0; }
.article-content li { margin: 4px 0; }
.article-content blockquote {
  border-left: 3px solid var(--bl-accent);
  padding: 8px 16px;
  margin: 14px 0;
  background: var(--bl-accent-light);
  border-radius: 0 var(--bl-radius) var(--bl-radius) 0;
  color: #4a6b43;
}
.article-content code {
  background: var(--bl-code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: 'Cascadia Code', 'Fira Code', monospace;
}
.article-content pre {
  background: #1e2b1c;
  color: #c8e6c0;
  padding: 16px 20px;
  border-radius: var(--bl-radius);
  overflow-x: auto;
  margin: 14px 0;
  font-size: 0.88rem;
  line-height: 1.6;
}
.article-content pre code { background: none; padding: 0; color: inherit; }
.article-content img { max-width: 100%; border-radius: 8px; margin: 12px 0; }
.article-content table {
  width: 100%; border-collapse: collapse; margin: 14px 0;
}
.article-content th, .article-content td {
  border: 1px solid var(--bl-border); padding: 8px 12px; text-align: left;
}
.article-content th { background: var(--bl-accent-light); font-weight: 600; }
.article-content a { color: var(--bl-accent); text-decoration: underline; }

/* TOC */
.article-toc {
  background: var(--bl-panel);
  border: 1px solid var(--bl-border);
  border-radius: var(--bl-radius);
  padding: 16px 20px;
  margin-bottom: 24px;
}
.article-toc h4 { font-size: 0.85rem; color: var(--bl-muted); margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.05em; }
.article-toc ul { list-style: none; padding: 0; }
.article-toc li { padding: 3px 0; font-size: 0.88rem; }
.article-toc a { color: var(--bl-text); text-decoration: none; }
.article-toc a:hover { color: var(--bl-accent); }

.blog-empty {
  text-align: center;
  color: var(--bl-muted);
  padding: 60px 20px;
  font-size: 1rem;
}
.blog-loading {
  text-align: center; padding: 80px 20px;
  color: var(--bl-muted); font-size: 1.1rem;
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ---- Toast ---- */
.blog-toast {
  position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%);
  background: #2e3b2c; color: #e8f5e9;
  padding: 10px 24px; border-radius: 20px;
  font-size: 0.88rem; opacity: 0; pointer-events: none;
  transition: opacity .3s; z-index: 1000;
}
.blog-toast.show { opacity: 1; }

/* 两级分类选择 */
.bl-cat-select {
  width: 100%; padding: 10px 12px; min-height: 44px;
  border: 1px solid var(--bl-border); border-radius: 6px;
  font-size: 0.93rem; background: var(--bl-bg);
  color: var(--bl-text); font-family: inherit;
}

/* ---- 可访问性：焦点样式 ---- */
a:focus-visible, button:focus-visible, input:focus-visible,
li[tabindex]:focus-visible, .blog-cat-list li:focus-visible,
.bl-cat-pill:focus-visible, .bl-tag-pill:focus-visible,
.post-list-item:focus-visible, .bl-drop-zone:focus-within {
  outline: 2px solid var(--bl-accent);
  outline-offset: 2px;
}

/* ---- 投稿弹窗 ---- */
.blog-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.35);
  display: flex; align-items: center; justify-content: center;
  z-index: 500; opacity: 0; pointer-events: none;
  transition: opacity .25s;
}
.blog-overlay.open { opacity: 1; pointer-events: auto; }

.blog-dialog {
  background: var(--bl-panel);
  border-radius: 14px; padding: 32px;
  width: min(520px, 94vw); max-height: 90vh; overflow-y: auto;
  position: relative;
  box-shadow: 0 8px 32px rgba(0,0,0,.15);
}
.blog-dialog h3 { font-size: 1.2rem; margin-bottom: 18px; }

.bl-form-label {
  display: block; margin-bottom: 6px;
}
.bl-form-label > span {
  display: block; font-size: 0.83rem; color: var(--bl-muted); margin-bottom: 4px;
}
#submitForm input[type="text"] {
  width: 100%; padding: 9px 12px; border: 1px solid var(--bl-border);
  border-radius: 6px; font-size: 0.93rem; background: var(--bl-bg);
  color: var(--bl-text); font-family: inherit;
  margin-bottom: 14px;
}

.bl-field-hint { margin: 0 0 8px; font-size: 0.78rem; }
.bl-hint-err { color: #d44; }

/* ---- 分类胶囊 ---- */
.bl-cat-pills {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 14px;
}
.bl-cat-pill {
  padding: 10px 18px; border-radius: 20px;
  min-height: 44px; display: inline-flex; align-items: center;
  border: 1.5px solid var(--bl-border);
  background: #f5faf3; color: var(--bl-muted);
  font-size: 0.88rem; cursor: pointer;
  transition: all .2s; user-select: none;
  font-family: inherit;
}
.bl-cat-pill:hover { border-color: var(--bl-accent); color: var(--bl-accent); }
.bl-cat-pill.selected {
  background: var(--bl-accent); color: #fff;
  border-color: var(--bl-accent);
}

/* ---- 标签池 ---- */
.bl-tag-pool {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-bottom: 10px;
}
.bl-tag-pill {
  padding: 8px 16px; border-radius: 16px;
  min-height: 44px; display: inline-flex; align-items: center;
  border: 1.5px solid var(--bl-border);
  background: #f9fcf7; color: var(--bl-muted);
  font-size: 0.82rem; cursor: pointer;
  transition: all .2s; user-select: none;
}
.bl-tag-pill:hover { border-color: var(--bl-accent); color: var(--bl-accent); }
.bl-tag-pill.selected {
  background: var(--bl-accent); color: #fff;
  border-color: var(--bl-accent);
}

/* 自定义标签输入 */
.bl-tag-input-wrap { margin-bottom: 8px; }
.bl-tag-input-wrap input {
  width: 100%; padding: 8px 12px; border: 1px dashed var(--bl-border);
  border-radius: 6px; font-size: 0.88rem; background: var(--bl-bg);
  color: var(--bl-text); font-family: inherit;
}

/* 已选标签展示 */
.bl-tag-selected {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-bottom: 14px; min-height: 6px;
}
.bl-tag-chip {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 10px; border-radius: 14px;
  background: #e8f5e9; color: var(--bl-accent);
  font-size: 0.8rem;
}
.bl-tag-chip .bl-chip-x {
  cursor: pointer; font-weight: bold; font-size: 0.85rem;
  line-height: 1; opacity: 0.6;
  width: 20px; height: 20px; display: inline-flex; align-items: center; justify-content: center;
}
.bl-tag-chip .bl-chip-x:hover { opacity: 1; }

/* ---- 拖拽上传区 ---- */
.bl-drop-zone {
  border: 2px dashed var(--bl-border);
  border-radius: 10px; padding: 28px 16px;
  text-align: center; transition: border-color .2s, background .2s;
  cursor: pointer; margin-bottom: 18px;
}
.bl-drop-zone.drag-over {
  border-color: var(--bl-accent);
  background: #f0faf2;
}
.bl-drop-prompt {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  color: var(--bl-muted); font-size: 0.88rem;
}
.bl-drop-icon { font-size: 2rem; }
.bl-link-btn {
  background: none; border: none; color: var(--bl-accent);
  text-decoration: underline; cursor: pointer; font-family: inherit; font-size: inherit;
}
.bl-drop-name {
  margin-top: 8px; color: var(--bl-accent);
  font-size: 0.85rem; font-weight: 500;
}

.btn-submit {
  width: 100%; padding: 13px;
  min-height: 48px;
  background: var(--bl-accent); color: #fff;
  border: none; border-radius: 8px; font-size: 0.95rem;
  cursor: pointer; transition: background .2s;
}
.btn-submit:hover { background: #3d854d; }
.btn-submit:disabled { opacity: .6; cursor: not-allowed; }

.btn-close {
  position: absolute; top: 12px; right: 12px;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  background: none; border: none; font-size: 1.3rem;
  cursor: pointer; color: var(--bl-muted);
}

/* ---- 响应式 ---- */
/* 平板：侧栏变窄，卡片自适应 */
@media (max-width: 1060px) {
  .blog-main.list-view { grid-template-columns: minmax(0, 720px); }
}
/* 平板竖屏：主区缩进、字号调整 */
@media (max-width: 820px) {
  .blog-main { padding: 24px 28px; margin-left: 0; }
  .blog-main.article-view { max-width: 100%; margin-left: auto; margin-right: auto; }
  .article-title { font-size: 1.4rem; }
}
/* 手机横屏 */
@media (max-width: 720px) {
  .blog-sidebar {
    width: 260px; z-index: 200;
    padding: 60px 16px 16px !important;
  }
  .blog-sidebar-toggle { left: 6px; }
  .blog-sidebar.open ~ .blog-sidebar-toggle { left: 266px; }
  .blog-main { padding: 16px; margin-left: 0; }
  .blog-main.list-view { grid-template-columns: 1fr; }
  .blog-main.article-view { max-width: 100%; margin-left: auto; margin-right: auto; }
  .article-title { font-size: 1.35rem; }
  .blog-dialog { padding: 24px 16px; }
  .bl-cat-pill { padding: 10px 14px; font-size: 0.84rem; }
}
/* 小手机 */
@media (max-width: 480px) {
  .blog-main { padding: 12px; }
  .article-title { font-size: 1.2rem; }
  .article-content { font-size: 0.95rem; }
  .blog-dialog { width: 100vw; border-radius: 0; }
  .bl-drop-zone { padding: 20px 10px; }
  .bl-drop-prompt { font-size: 0.8rem; }
}