/* 后台。观感对齐 vue-element-admin（深色侧栏 / 面包屑 / 统计卡 / Element 配色），
   但不引 Vue 和 Element —— 站点是零依赖静态页，组件用手写 CSS 复刻。 */
:root {
  --ea-primary: #409eff;
  --ea-primary-dark: #337ecc;
  --ea-success: #67c23a;
  --ea-warning: #e6a23c;
  --ea-danger: #f56c6c;
  --ea-info: #909399;
  --ea-sidebar: #304156;
  --ea-sidebar-hover: #263445;
  --ea-sidebar-active: #1f2d3d;
  --ea-logo: #2b2f3a;
  --ea-bg: #f0f2f5;
  --ea-line: #ebeef5;
  --ea-text: #303133;
  --ea-text-sub: #606266;
  --ea-text-mute: #909399;
  --ea-card: #ffffff;
  --ea-head: #fafafa;
  --ea-quote: #f8f8f8;
}

/* 深后台：跟站点同一套开关。侧栏本来就深，主要翻的是内容区与卡片 */
[data-theme="dark"] {
  --ea-primary: #6aa9ff;
  --ea-primary-dark: #85baff;
  --ea-success: #7cc142;
  --ea-warning: #e6b45c;
  --ea-danger: #f78989;
  --ea-sidebar: #1b1f27;
  --ea-sidebar-hover: #232833;
  --ea-sidebar-active: #2c323e;
  --ea-logo: #16191f;
  --ea-bg: #141513;
  --ea-line: #302e2a;
  --ea-text: #e8e6e1;
  --ea-text-sub: #b3afa7;
  --ea-text-mute: #948f87;
  --ea-card: #1c1b19;
  --ea-head: #242320;
  --ea-quote: #242320;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ea-bg);
  color: var(--ea-text);
  font: 14px/1.6 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* ---------- 侧栏 ---------- */
.ea-aside {
  position: fixed; left: 0; top: 0; bottom: 0; width: 210px;
  background: var(--ea-sidebar); overflow-y: auto; z-index: 100;
  transition: width .2s;
}
.ea-logo {
  height: 50px; display: flex; align-items: center; gap: 9px;
  padding: 0 14px; background: var(--ea-logo); color: #fff;
}
.ea-logo .dot {
  width: 22px; height: 22px; border-radius: 5px; flex: 0 0 auto;
  background: var(--ea-primary); color: #fff;
  font-size: 12px; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
}
.ea-logo span { font-size: 14.5px; font-weight: 600; letter-spacing: .02em; }

.ea-menu { list-style: none; margin: 0; padding: 8px 0; }
.ea-menu li {
  display: flex; align-items: center; gap: 9px;
  padding: 11px 16px; color: #bfcbd9; cursor: pointer;
  font-size: 14px; border-left: 3px solid transparent;
}
.ea-menu li:hover { background: var(--ea-sidebar-hover); color: #fff; }
.ea-menu li.on {
  background: var(--ea-sidebar-active); color: var(--ea-primary);
  border-left-color: var(--ea-primary);
}
.ea-menu .ico {
  width: 16px; height: 16px; flex: 0 0 auto; opacity: .9;
}
.ea-menu .badge {
  margin-left: auto; min-width: 18px; height: 18px; padding: 0 5px;
  border-radius: 9px; background: var(--ea-danger); color: #fff;
  font-size: 11px; line-height: 18px; text-align: center;
}
.ea-menu .badge.zero { background: #5a6470; }
.ea-menu .sec {
  font-size: 11.5px; color: #6b7684; padding: 14px 16px 6px;
  cursor: default; letter-spacing: .04em;
}
.ea-menu .sec:hover { background: none; color: #6b7684; }

/* ---------- 右侧主体 ---------- */
.ea-wrap { margin-left: 210px; min-height: 100vh; }

.ea-navbar {
  height: 50px; background: #fff; border-bottom: 1px solid var(--ea-line);
  display: flex; align-items: center; gap: 12px; padding: 0 20px;
}
.ea-crumb { font-size: 13.5px; color: var(--ea-text-sub); }
.ea-crumb b { color: var(--ea-text); font-weight: 500; }
.ea-navbar .spacer { margin-left: auto; }
.ea-chip {
  font-size: 12px; padding: 3px 10px; border-radius: 12px;
  background: #f4f4f5; color: var(--ea-text-mute);
}
.ea-chip.ok { background: #f0f9eb; color: var(--ea-success); }
.ea-chip.bad { background: #fef0f0; color: var(--ea-danger); }

.ea-main { padding: 18px 20px 40px; }

/* ---------- 卡片 ---------- */
.ea-card {
  background: #fff; border-radius: 4px; box-shadow: 0 1px 4px rgba(0, 21, 41, .08);
  margin-bottom: 16px; overflow: hidden;
}
.ea-card-head {
  padding: 13px 18px; border-bottom: 1px solid var(--ea-line);
  display: flex; align-items: center; gap: 10px;
}
.ea-card-head h3 { margin: 0; font-size: 14.5px; font-weight: 600; }
.ea-card-head .sub { font-size: 12.5px; color: var(--ea-text-mute); }
.ea-card-head .spacer { margin-left: auto; }
.ea-card-body { padding: 16px 18px; }
.ea-card-body.tight { padding: 8px 18px 14px; }

/* 统计卡 */
.ea-panels { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 16px; }
.ea-panel {
  background: #fff; border-radius: 4px; padding: 16px 18px;
  box-shadow: 0 1px 4px rgba(0, 21, 41, .08);
  display: flex; align-items: center; gap: 14px; cursor: pointer;
  transition: box-shadow .2s;
}
.ea-panel:hover { box-shadow: 0 2px 10px rgba(0, 21, 41, .14); }
.ea-panel .pic {
  width: 46px; height: 46px; border-radius: 4px; flex: 0 0 auto;
  display: flex; align-items: center; justify-content: center;
}
.ea-panel .pic svg { width: 22px; height: 22px; fill: #fff; }
.ea-panel .num { font-size: 22px; font-weight: 600; line-height: 1.2; }
.ea-panel .cap { font-size: 12.5px; color: var(--ea-text-mute); }
.p-blue { background: #409eff; } .p-green { background: #67c23a; }
.p-orange { background: #e6a23c; } .p-red { background: #f56c6c; }
.p-cyan { background: #13c2c2; } .p-gray { background: #909399; }

/* ---------- 按钮 / 标签 ---------- */
.ea-btn {
  font: inherit; font-size: 13px; cursor: pointer; padding: 7px 15px;
  border-radius: 4px; border: 1px solid #dcdfe6; background: #fff; color: var(--ea-text-sub);
  transition: .15s;
}
.ea-btn:hover { color: var(--ea-primary); border-color: #c6e2ff; background: #ecf5ff; }
.ea-btn.primary { background: var(--ea-primary); border-color: var(--ea-primary); color: #fff; }
.ea-btn.primary:hover { background: var(--ea-primary-dark); border-color: var(--ea-primary-dark); color: #fff; }
.ea-btn.success { background: var(--ea-success); border-color: var(--ea-success); color: #fff; }
.ea-btn.success:hover { background: #85ce61; border-color: #85ce61; color: #fff; }
.ea-btn.danger { background: var(--ea-danger); border-color: var(--ea-danger); color: #fff; }
.ea-btn.danger:hover { background: #f78989; border-color: #f78989; color: #fff; }
.ea-btn.warn { background: var(--ea-warning); border-color: var(--ea-warning); color: #fff; }
.ea-btn.warn:hover { background: #ebb563; border-color: #ebb563; color: #fff; }
.ea-btn.text { border: none; background: none; padding: 6px 8px; }
.ea-btn:disabled { opacity: .55; cursor: default; }

.ea-tag {
  display: inline-block; font-size: 12px; line-height: 20px; padding: 0 7px;
  border-radius: 3px; border: 1px solid; white-space: nowrap;
}
/* 标签底色用语义色的 14% 透明混色 —— 深浅两个主题都成立，不用各写一套 */
.ea-tag.info { color: var(--ea-info); background: color-mix(in srgb, var(--ea-info) 14%, transparent); border-color: color-mix(in srgb, var(--ea-info) 30%, transparent); }
.ea-tag.primary { color: var(--ea-primary); background: color-mix(in srgb, var(--ea-primary) 14%, transparent); border-color: color-mix(in srgb, var(--ea-primary) 30%, transparent); }
.ea-tag.success { color: var(--ea-success); background: color-mix(in srgb, var(--ea-success) 14%, transparent); border-color: color-mix(in srgb, var(--ea-success) 30%, transparent); }
.ea-tag.warning { color: var(--ea-warning); background: color-mix(in srgb, var(--ea-warning) 14%, transparent); border-color: color-mix(in srgb, var(--ea-warning) 30%, transparent); }
.ea-tag.danger { color: var(--ea-danger); background: color-mix(in srgb, var(--ea-danger) 14%, transparent); border-color: color-mix(in srgb, var(--ea-danger) 30%, transparent); }
.ea-tag.mono { font-family: var(--mono); }

/* ---------- 列表卡 ---------- */
.ea-item { border: 1px solid var(--ea-line); border-radius: 4px; padding: 13px 15px; margin-bottom: 12px; background: #fff; }
.ea-item:last-child { margin-bottom: 0; }
.ea-item.errcard { border-left: 3px solid var(--ea-danger); }
.ea-item-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; padding-bottom: 9px; border-bottom: 1px dashed var(--ea-line); }
.ea-pid {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px;
  color: var(--ea-primary); text-decoration: none; padding: 1px 6px;
  border: 1px solid #d9ecff; background: #ecf5ff; border-radius: 3px;
}
.ea-pid:hover { background: var(--ea-primary); color: #fff; }
.ea-meta { font-size: 12.5px; color: var(--ea-text-mute); }
.ea-meta .spacer { margin-left: auto; }

.ea-stuck { font-size: 14px; font-weight: 600; color: var(--ea-text); padding: 9px 0 4px; }
.ea-quote {
  border-left: 2px solid var(--ea-line); padding: 4px 0 4px 10px; margin: 6px 0;
  font-size: 13.5px; color: var(--ea-text-sub);
}
.ea-quote .who { font-size: 12px; color: var(--ea-text-mute); display: block; margin-bottom: 1px; }
/* 书库划词提问带的原文引用，跟往来帖子区分开 */
.ea-quote.src { background: var(--ea-bg); border-left-color: var(--ea-line); }
.ea-quote.src .who { color: var(--ea-primary); }
.ea-quote.answer { border-left-color: var(--ea-success); }
.ea-quote.answer .who { color: var(--ea-success); }

.ea-write { display: flex; gap: 10px; align-items: flex-start; margin-top: 10px; }
.ea-write textarea, .ea-field input {
  width: 100%; font: inherit; font-size: 13.5px; color: var(--ea-text);
  background: var(--ea-card); border: 1px solid var(--ea-line); border-radius: 4px;
  padding: 8px 11px; outline: none; resize: vertical;
}
.ea-write textarea:focus, .ea-field input:focus { border-color: var(--ea-primary); }
.ea-write .btns { display: flex; flex-direction: column; gap: 6px; flex: 0 0 auto; }
.ea-acts { margin-top: 9px; padding-top: 9px; border-top: 1px dashed var(--ea-line); display: flex; gap: 7px; align-items: center; flex-wrap: wrap; }
.ea-acts .tip { margin-left: auto; font-size: 12.5px; color: var(--ea-success); }

/* ---------- 表格 ---------- */
.ea-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.ea-table th {
  text-align: left; font-weight: 500; color: var(--ea-text-sub); font-size: 12.5px;
  padding: 9px 10px; background: var(--ea-head); border-bottom: 1px solid var(--ea-line);
  white-space: nowrap;
}
.ea-table td { padding: 9px 10px; border-bottom: 1px solid var(--ea-line); }
.ea-table tbody tr:hover { background: var(--ea-head); }
.ea-table td.n { text-align: right; font-variant-numeric: tabular-nums; }
.ea-bar { display: inline-block; height: 6px; border-radius: 3px; background: var(--ea-primary); vertical-align: middle; min-width: 4px; }

/* ---------- 附件 ---------- */
.ea-att { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 7px; }
.ea-att a { text-decoration: none; display: block; }
.ea-att img {
  max-height: 140px; max-width: 100%;
  border: 1px solid var(--ea-line); border-radius: 4px;
}
.ea-att img:hover { border-color: var(--ea-primary); }
.ea-att .pdf-link {
  display: inline-flex; align-items: center; font-size: 13px;
  color: var(--ea-primary); background: var(--ea-head);
  border: 1px solid var(--ea-line); border-radius: 4px; padding: 6px 11px;
}
.ea-att .pdf-link:hover { background: var(--ea-primary); color: #fff; }
.ea-pick { display: flex; align-items: center; gap: 9px; margin-top: 9px; flex-wrap: wrap; }
.ea-pick .hint { font-size: 12.5px; color: var(--ea-text-mute); }
.ea-prev { position: relative; width: 72px; border: 1px solid var(--ea-line); border-radius: 4px; overflow: hidden; }
.ea-prev img { width: 100%; height: 56px; object-fit: cover; display: block; }
.ea-prev .pdf {
  height: 56px; display: flex; align-items: center; justify-content: center;
  font-size: 11px; color: var(--ea-primary); background: #ecf5ff;
  padding: 3px; text-align: center; word-break: break-all; line-height: 1.25;
}
.ea-prev .x {
  position: absolute; right: 2px; top: 2px; width: 17px; height: 17px;
  line-height: 15px; text-align: center; cursor: pointer; padding: 0;
  font-size: 13px; color: #fff; background: rgba(0, 0, 0, .45);
  border: none; border-radius: 50%;
}

/* ---------- 空状态 / 提示 ---------- */
.ea-empty { text-align: center; padding: 34px 0; color: var(--ea-text-mute); font-size: 13.5px; }
.ea-empty .box { width: 54px; height: 42px; margin: 0 auto 10px; opacity: .45; }
.ea-alert {
  padding: 9px 13px; border-radius: 4px; font-size: 13px; margin-bottom: 14px;
  background: #fef0f0; color: var(--ea-danger); border: 1px solid #fde2e2; display: none;
}
.ea-alert.show { display: block; }

/* 登录卡 */
.ea-login { max-width: 380px; margin: 90px auto; background: #fff; border-radius: 4px; box-shadow: 0 1px 4px rgba(0, 21, 41, .08); }
.ea-login h2 { margin: 0; padding: 16px 22px; font-size: 15px; border-bottom: 1px solid var(--ea-line); }
.ea-login .body { padding: 22px; }
.ea-login .ea-field { margin-bottom: 14px; }
.ea-login .hint { font-size: 12.5px; color: var(--ea-text-mute); margin-top: 10px; line-height: 1.7; }

/* 代码块（沉淀导出） */
.ea-code {
  background: #f5f7fa; border: 1px solid var(--ea-line); border-radius: 4px;
  padding: 14px 16px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12.5px; line-height: 1.7; white-space: pre-wrap; word-break: break-word;
  max-height: 460px; overflow: auto; margin: 0;
}

/* 勘误：编辑区与新建区。后台的输入框此前没有统一样式，这里补齐 */
.ea-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.ea-edit { margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--ea-line); }
.ea-edit textarea,
.ea-new textarea,
.ea-item.errcard textarea,
.ea-item.errcard input,
.ea-item.errcard select {
  font: inherit; font-size: 14px; line-height: 1.6;
  color: var(--ea-text); background: var(--ea-card);
  border: 1px solid var(--ea-line); border-radius: 4px; padding: 7px 10px;
  width: 100%; box-sizing: border-box; resize: vertical;
}
.ea-item.errcard select { width: auto; }
.ea-item.errcard input:focus,
.ea-item.errcard textarea:focus,
.ea-item.errcard select:focus { outline: none; border-color: var(--ea-primary); }
.ea-item.errcard textarea { margin-bottom: 8px; }

/* 讲义学习数据：每节一行，四列数字。后台只做「看」，不做分析。 */
.ea-lrow{
  display:grid; grid-template-columns:1.2fr 1fr 1fr 1fr 1fr;
  gap:8px; padding:7px 2px; font-size:.92em;
  border-top:1px solid var(--bd, rgba(128,128,128,.18));
}
.ea-lrow.head{
  font-size:.84em; color:var(--muted, #888); font-weight:600; border-top:0;
}
.ea-lrow .sec{font-weight:600}

/* 统一功能树与新增管理视图，沿用后台的颜色和卡片。 */
.ea-tree ul { list-style: none; margin: 0 12px 8px 20px; padding: 0 0 0 8px; border-left: 1px solid #5a6470; }
.ea-logo span { font-size: 13px; }
.ea-tree summary { padding: 12px 16px 8px; color: #bfcbd9; cursor: pointer; font-size: 13px; }
.ea-tree li { display: block; padding: 0; border: 0; }
.ea-tree button { display: flex; align-items: center; gap: 8px; width: 100%; min-height: 44px; padding: 10px; border: 0; border-radius: 4px; background: transparent; color: #bfcbd9; font: inherit; text-align: left; cursor: pointer; }
.ea-tree button:hover { background: var(--ea-sidebar-hover); color: #fff; }
.ea-tree button.on { background: var(--ea-sidebar-active); color: var(--ea-primary); }
.ea-tree button:focus-visible, .ea-tree summary:focus-visible, .ea-btn:focus-visible { outline: 2px solid var(--ea-primary); outline-offset: -2px; }
.ea-navbar, .ea-card, .ea-panel { background: var(--ea-card); }
.ea-main { --surface: var(--ea-card); --line: var(--ea-line); --ink: var(--ea-text); --ink-2: var(--ea-text-sub); --ink-3: var(--ea-text-mute); --bg: var(--ea-bg); --accent: var(--ea-primary); --sunken: var(--ea-head); --accent-soft: var(--ea-quote); --r-lg: 4px; --r-sm: 4px; }
.ea-tool-row { display: flex; align-items: end; flex-wrap: wrap; gap: 12px; margin-bottom: 16px; }
.ea-tool-row .ea-field { flex: 1; min-width: 180px; margin: 0; }
.ea-field { display: block; font-size: 13px; color: var(--ea-text-sub); margin: 12px 0; }
.ea-input { display: block; width: 100%; margin-top: 6px; padding: 9px 10px; border: 1px solid var(--ea-line); border-radius: 4px; font: inherit; font-size: 16px; color: var(--ea-text); background: var(--ea-card); }
.ea-input:focus { outline: 2px solid var(--ea-primary); outline-offset: 1px; }
textarea.ea-input { resize: vertical; min-height: 100px; }
.ea-status { font-size: 13px; color: var(--ea-text-mute); overflow-wrap: anywhere; }
.ea-status.error { color: var(--ea-danger); }
.ea-field.ea-model-toggle { display: flex; align-items: center; gap: 8px; }
.ea-model-toggle input[type=checkbox] { width: auto; margin: 0; padding: 0; }
.ea-btn:disabled { opacity: .5; cursor: wait; }
.ea-table-scroll { overflow-x: auto; }
.ea-table-scroll td { max-width: 360px; overflow-wrap: anywhere; white-space: normal; }
.ea-content-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; align-items: start; }
.ea-content-fields { min-width: 0; }
.ea-content-node { padding: 8px 12px; border: 1px solid var(--ea-line); border-radius: 4px; margin: 8px 0; }
.ea-content-node summary { cursor: pointer; overflow-wrap: anywhere; }
.ea-content-source { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; line-height: 1.7; }
.ea-book-preview { min-width: 0; padding: 16px; border: 1px solid var(--ea-line); border-radius: 4px; background: var(--ea-card); overflow-wrap: anywhere; --text: var(--ea-text); --text-light: var(--ea-text-sub); --bd: var(--ea-line); }
.ea-book-preview .md { overflow-x: auto; }
.ea-book-preview img { max-width: 100%; }
.ea-store.st-page { padding: 0; margin: 0; max-width: none; }
.ea-store .st-form { margin-top: 16px; }
.ea-store .st-field { width: 100%; font-size: 16px; }
.ea-store .st-form > .st-button { justify-self: start; }
.ea-store .st-admin-workspace > .st-panel { margin-top: 0; }
.ea-store .st-table-wrap { margin-top: 24px; }
.ea-store .st-admin-pane[hidden] { display: none; }
.ea-store .st-panel { background: var(--ea-card); }
@media (max-width: 850px) {
  .ea-aside { position: static; width: auto; }
  .ea-wrap { margin-left: 0; }
  .ea-tree { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
  .ea-navbar { height: auto; min-height: 50px; flex-wrap: wrap; padding: 10px 16px; }
  .ea-main { padding: 16px 12px; }
  .ea-content-split { grid-template-columns: minmax(0, 1fr); }
}