/* ==========================================================
   Doc.Edit AI 资料库 — 样式
   ========================================================== */
:root {
  --primary: #12395e;
  --primary-2: #1e5e9e;
  --accent: #2e7d46;
  --bg: #f4f6f9;
  --card: #ffffff;
  --border: #dde5ee;
  --text: #1c2b3a;
  --muted: #6b7785;
  --danger: #c0392b;
  --radius: 8px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* ================= 登录页 ================= */
.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(1000px 500px at 15% -10%, #eaf2fb 0%, transparent 60%),
    radial-gradient(900px 500px at 110% 110%, #e2f2ea 0%, transparent 55%),
    linear-gradient(160deg, #eef3f9 0%, #f6f8fb 100%);
}
.login-wrap { width: 100%; max-width: 420px; padding: 20px; }
.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 34px 34px 30px;
  box-shadow: 0 18px 48px rgba(18, 57, 94, .10);
}
.login-logo {
  font-size: 26px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: .5px;
}
.login-logo span {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-2);
  margin-top: 4px;
  letter-spacing: 2px;
}
.login-sub { color: var(--muted); font-size: 13px; margin: 8px 0 24px; }
.field { display: block; margin-bottom: 16px; }
.field span {
  display: block;
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 6px;
}
.field input {
  width: 100%;
  height: 42px;
  padding: 0 14px;
  border: 1px solid #c9d5e3;
  border-radius: var(--radius);
  font-size: 14px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.field input:focus {
  border-color: var(--primary-2);
  box-shadow: 0 0 0 3px rgba(30, 94, 158, .12);
}
.login-error {
  background: #fdeeec;
  color: var(--danger);
  border: 1px solid #f5c6c0;
  border-radius: 6px;
  font-size: 13px;
  padding: 9px 12px;
  margin: 0 0 14px;
}
.btn-primary {
  width: 100%;
  height: 44px;
  border: 0;
  border-radius: var(--radius);
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 6px;
  cursor: pointer;
  transition: background .15s;
}
.btn-primary:hover { background: #1a4a78; }

/* ================= 主界面骨架 ================= */
.app-body { height: 100vh; overflow: hidden; }
.topbar {
  height: 56px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  padding: 0 18px;
  gap: 18px;
  box-shadow: 0 2px 8px rgba(18, 57, 94, .25);
  position: relative;
  z-index: 20;
}
.brand { font-weight: 800; font-size: 18px; letter-spacing: .5px; white-space: nowrap; }
.brand span {
  font-size: 11px;
  font-weight: 600;
  opacity: .85;
  margin-left: 8px;
  letter-spacing: 2px;
  vertical-align: middle;
}
.top-search { flex: 1; max-width: 340px; margin: 0 auto; }
.top-search input {
  width: 100%;
  height: 34px;
  border: 0;
  border-radius: 17px;
  padding: 0 16px;
  font-size: 13px;
  background: rgba(255, 255, 255, .14);
  color: #fff;
  outline: none;
}
.top-search input::placeholder { color: rgba(255, 255, 255, .65); }
.top-search input:focus { background: rgba(255, 255, 255, .22); }
.top-user { display: flex; align-items: center; gap: 12px; white-space: nowrap; }
.user-name { font-size: 13px; opacity: .9; }
.logout {
  color: #fff;
  font-size: 12.5px;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, .45);
  border-radius: 14px;
  padding: 4px 14px;
  transition: background .15s;
}
.logout:hover { background: rgba(255, 255, 255, .15); }
.pwd-link {
  color: #fff;
  font-size: 12.5px;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, .45);
  border-radius: 14px;
  padding: 4px 14px;
  transition: background .15s;
}
.pwd-link:hover { background: rgba(255, 255, 255, .15); }

.layout { display: flex; height: calc(100vh - 56px); }
.sidebar {
  width: 292px;
  min-width: 292px;
  background: var(--card);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 12px 10px 40px;
}
.menu { display: flex; flex-direction: column; gap: 6px; }
.cat-block { border-radius: 8px; }
.cat-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  cursor: pointer;
  border-radius: 7px;
  user-select: none;
  font-size: 14px;
}
.cat-head:hover { background: #eef3f9; }
.cat-head.open { background: #e8f0f8; }
.cat-caret { font-size: 11px; color: var(--muted); transition: transform .15s; width: 12px; }
.cat-block.open .cat-caret { transform: rotate(90deg); }
.cat-name { font-weight: 700; color: var(--primary); flex: 1; }
.cat-count {
  font-style: normal;
  font-size: 11px;
  color: var(--muted);
  background: #eef2f7;
  border-radius: 10px;
  padding: 1px 8px;
}
.doc-list { list-style: none; margin: 2px 0 6px; padding: 0; display: none; }
.cat-block.open .doc-list { display: block; }
.doc-list a {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text);
  font-size: 13px;
  line-height: 1.45;
  padding: 7px 10px 7px 22px;
  border-radius: 6px;
}
.doc-list a:hover { background: #f2f6fb; color: var(--primary-2); }
.doc-list a.active { background: #e3edf7; color: var(--primary); font-weight: 600; }
.doc-title { flex: 1; min-width: 0; }
.doc-list a.hidden { display: none; }
.cat-block.hidden { display: none; }

/* 类型徽标（菜单内小标签） */
.doc-list a i {
  font-style: normal;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 4px;
  white-space: nowrap;
}
.t-pdf  { background: #fdecea; color: #c0392b; }
.t-md   { background: #e8f1fa; color: #1e5e9e; }
.t-docx { background: #e9f3ef; color: #1e7d45; }
.t-xlsx { background: #f2f6e4; color: #6b7a1e; }
.t-html { background: #f5ede4; color: #a05a17; }
.t-file { background: #eef1f5; color: #55606c; }

.main { flex: 1; min-width: 0; background: var(--bg); }
#contentFrame {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  background: var(--card);
}

/* ================= 文档内容页（iframe 内） ================= */
.doc-body { background: var(--bg); padding: 18px 22px 34px; }
.doc-wrap { max-width: 1280px; margin: 0 auto; }
.doc-head {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 22px 14px;
  margin-bottom: 14px;
}
.doc-crumb { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.doc-crumb a { color: var(--primary-2); text-decoration: none; }
.doc-head h1.doc-title { margin: 0 0 10px; font-size: 21px; color: var(--primary); line-height: 1.35; }
.doc-meta { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.doc-meta i {
  font-style: normal;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 9px;
  border-radius: 11px;
}
.doc-file { font-size: 12px; color: var(--muted); word-break: break-all; }
.btn-download {
  margin-left: auto;
  font-size: 12.5px;
  text-decoration: none;
  color: var(--primary);
  border: 1px solid var(--primary-2);
  border-radius: 14px;
  padding: 4px 14px;
  transition: background .15s, color .15s;
}
.btn-download:hover { background: var(--primary); color: #fff; }
.doc-tools { display: flex; justify-content: flex-end; }
.doc-desc {
  margin-top: 12px;
  background: #eef5fc;
  border-left: 4px solid var(--primary-2);
  border-radius: 0 6px 6px 0;
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: #2c4258;
}
.viewer {
  width: 100%;
  height: calc(100vh - 232px);
  min-height: 560px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 4px 16px rgba(18, 57, 94, .06);
}
.empty-state {
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 60px 20px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}
.empty-state .muted { font-size: 12px; }

/* ================= Markdown 渲染样式 ================= */
.md-body {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 26px 30px 34px;
  line-height: 1.75;
  font-size: 14.5px;
  overflow-x: auto;
}
.md-body h1 { font-size: 24px; color: var(--primary); border-bottom: 2px solid #e3edf7; padding-bottom: 8px; }
.md-body h2 { font-size: 19px; color: var(--primary); border-left: 4px solid var(--primary-2); padding-left: 10px; margin-top: 26px; }
.md-body h3 { font-size: 16px; color: #23405c; }
.md-body p { margin: 10px 0; }
.md-body a { color: var(--primary-2); }
.md-body blockquote {
  margin: 12px 0;
  padding: 8px 14px;
  background: #f6f9fc;
  border-left: 4px solid var(--primary-2);
  color: #3a4a5c;
  border-radius: 0 6px 6px 0;
}
.md-body code {
  background: #eef2f7;
  border-radius: 4px;
  padding: 1.5px 6px;
  font-size: 13px;
  font-family: Consolas, Menlo, "Courier New", monospace;
}
.md-body pre {
  background: #0f1b2a;
  color: #dbe7f4;
  padding: 14px 16px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
}
.md-body pre code { background: transparent; padding: 0; color: inherit; }
.md-body table {
  border-collapse: collapse;
  width: 100%;
  margin: 14px 0;
  font-size: 13.5px;
  display: block;
  overflow-x: auto;
}
.md-body th {
  background: var(--primary);
  color: #fff;
  padding: 9px 12px;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}
.md-body td {
  border-bottom: 1px solid var(--border);
  padding: 8px 12px;
  vertical-align: top;
}
.md-body tr:nth-child(even) td { background: #f5f8fb; }
.md-body ul, .md-body ol { padding-left: 22px; }
.md-body li { margin: 4px 0; }
.md-body hr { border: 0; border-top: 1px solid var(--border); margin: 22px 0; }

/* ================= 响应式 ================= */
@media (max-width: 960px) {
  .sidebar { width: 230px; min-width: 230px; }
  .top-search { display: none; }
  .doc-meta .btn-download { margin-left: 0; }
}
@media (max-width: 680px) {
  .layout { display: block; height: auto; }
  .sidebar { width: 100%; min-width: 0; max-height: 40vh; }
  .main { height: calc(100vh - 96px - 40vh); }
  .user-name { display: none; }
}