/* ================= 主题变量 ================= */
:root {
  --bg: #f5f4ef;
  --bg-content: #fdfdfa;
  --bg-sidebar: #efeee6;
  --bg-hover: #e9e7dc;
  --bg-active: #e3e0d3;
  --bg-code: #f3f2ec;
  --bg-inline-code: #ecebe3;
  --text: #26251f;
  --text-soft: #57554c;
  --muted: #8a877a;
  --border: #e2e0d4;
  --border-strong: #d1cfc0;
  --accent: #c15f3c;
  --accent-soft: #f8e9e2;
  --link: #a8552f;
  --shadow: 0 1px 3px rgba(60, 55, 40, .07), 0 8px 24px rgba(60, 55, 40, .06);
  --radius: 10px;
  --sans: ui-sans-serif, -apple-system, "SF Pro Text", "Segoe UI", Roboto,
          "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Cascadia Code",
          "PingFang SC", "Microsoft YaHei", monospace;
}
:root[data-theme="dark"] {
  --bg: #262624;
  --bg-content: #2b2a27;
  --bg-sidebar: #1f1e1b;
  --bg-hover: #34332e;
  --bg-active: #3c3a33;
  --bg-code: #232320;
  --bg-inline-code: #3a3831;
  --text: #eceae2;
  --text-soft: #b8b5a9;
  --muted: #86836f;
  --border: #3a3833;
  --border-strong: #4a4840;
  --accent: #d97757;
  --accent-soft: #4a3328;
  --link: #e08b6d;
  --shadow: 0 1px 3px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; height: 100%; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
button { font-family: inherit; }

/* ================= 布局 ================= */
.app { display: flex; height: 100vh; height: 100dvh; overflow: hidden; }
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

/* ================= 侧边栏 ================= */
.sidebar {
  width: 288px; flex-shrink: 0;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  transition: margin-left .22s ease;
  overflow: hidden;
}
.app.sidebar-hidden .sidebar { margin-left: -288px; }
.sidebar-mask { display: none; }

.brand {
  display: flex; align-items: center; gap: 8px;
  padding: 16px 16px 10px; font-weight: 700; font-size: 16px;
}
.brand-icon { font-size: 20px; }
.brand-name { flex: 1; }
.sidebar-close { display: none; }

.tabs { display: flex; gap: 4px; padding: 0 12px 10px; }
.tab {
  flex: 1; padding: 7px 4px; border: none; border-radius: 8px;
  background: transparent; color: var(--text-soft); cursor: pointer;
  font-size: 13px; white-space: nowrap;
}
.tab:hover { background: var(--bg-hover); }
.tab.active { background: var(--bg-active); color: var(--text); font-weight: 600; }

.panel { display: none; flex-direction: column; min-height: 0; }
.panel.active { display: flex; }
.panel-head {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 16px 6px; font-size: 12px; font-weight: 600;
  color: var(--muted); text-transform: uppercase; letter-spacing: .04em;
}

.file-list { overflow-y: auto; padding: 0 8px 12px; }
.file-group {
  font-size: 11px; color: var(--muted); font-weight: 600;
  padding: 10px 10px 4px; letter-spacing: .03em;
}
.file-item {
  display: block; width: 100%; text-align: left; border: none; cursor: pointer;
  background: transparent; color: var(--text);
  padding: 7px 10px; border-radius: 8px; font-size: 13.5px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.file-item:hover { background: var(--bg-hover); }
.file-item.active { background: var(--bg-active); font-weight: 600; }
.file-item .meta { display: block; font-size: 11px; color: var(--muted); font-weight: 400; }

.dropzone {
  margin: 12px 16px; padding: 28px 16px; text-align: center;
  border: 1.5px dashed var(--border-strong); border-radius: var(--radius);
  color: var(--text-soft); cursor: pointer; font-size: 13.5px;
  transition: border-color .15s, background .15s;
}
.dropzone:hover, .dropzone.drag { border-color: var(--accent); background: var(--accent-soft); }
.dz-icon { font-size: 26px; margin-bottom: 8px; }

.url-form { display: flex; flex-direction: column; gap: 10px; padding: 12px 16px; }
.url-form input {
  padding: 9px 12px; border: 1px solid var(--border-strong); border-radius: 8px;
  background: var(--bg-content); color: var(--text); font-size: 13.5px; outline: none;
}
.url-form input:focus { border-color: var(--accent); }

.outline-wrap {
  border-top: 1px solid var(--border);
  margin-top: 10px; min-height: 0; flex: 1;
  display: flex; flex-direction: column;
}
.outline { overflow-y: auto; padding: 0 8px 16px; }
.outline a {
  display: block; padding: 4px 10px; border-radius: 6px;
  color: var(--text-soft); text-decoration: none; font-size: 13px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.outline a:hover { background: var(--bg-hover); color: var(--text); }
.outline a.active { color: var(--accent); font-weight: 600; }
.outline a.lv2 { padding-left: 22px; }
.outline a.lv3 { padding-left: 34px; font-size: 12.5px; }
.outline a.lv4 { padding-left: 46px; font-size: 12.5px; }

/* ================= 工具栏 ================= */
.toolbar {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px; border-bottom: 1px solid var(--border);
  background: var(--bg); position: relative; z-index: 5;
}
.doc-title { display: flex; align-items: center; gap: 8px; min-width: 0; flex: 1; }
.doc-name {
  font-weight: 650; font-size: 14.5px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.doc-badge {
  font-size: 11px; padding: 2px 8px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent); font-weight: 600;
  flex-shrink: 0;
}
.toolbar-actions { display: flex; align-items: center; gap: 6px; }

.btn {
  padding: 7px 14px; border-radius: 8px; border: 1px solid var(--border-strong);
  background: var(--bg-content); color: var(--text); cursor: pointer; font-size: 13.5px;
}
.btn:hover { background: var(--bg-hover); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.btn.primary:hover { filter: brightness(1.07); }
.btn:disabled { opacity: .5; cursor: default; }

.icon-btn {
  width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center;
  border: none; border-radius: 8px; background: transparent; color: var(--text-soft);
  cursor: pointer; font-size: 15px;
}
.icon-btn:hover { background: var(--bg-hover); color: var(--text); }

.seg { display: flex; background: var(--bg-active); border-radius: 8px; padding: 2px; }
.seg-btn {
  border: none; background: transparent; padding: 5px 14px; border-radius: 6px;
  cursor: pointer; font-size: 13px; color: var(--text-soft);
}
.seg-btn.active { background: var(--bg-content); color: var(--text); font-weight: 600; box-shadow: 0 1px 2px rgba(0,0,0,.08); }

/* ================= 欢迎页 ================= */
.empty { flex: 1; display: flex; align-items: center; justify-content: center; padding: 24px; }
.empty-card { text-align: center; max-width: 420px; }
.empty-icon { font-size: 52px; margin-bottom: 12px; }
.empty-card h1 { font-size: 24px; margin: 0 0 8px; }
.empty-actions { display: flex; gap: 10px; justify-content: center; margin-top: 22px; flex-wrap: wrap; }

/* ================= 阅读视图 ================= */
.reader { flex: 1; overflow-y: auto; scroll-behavior: smooth; }
.reader .markdown-body {
  max-width: 800px; margin: 0 auto;
  padding: 40px 48px 120px;
}

/* ================= 编辑视图 ================= */
.editor { flex: 1; display: flex; min-height: 0; }
.editor-pane { flex: 1; min-width: 0; border-right: 1px solid var(--border); display: flex; }
.editor-pane textarea {
  flex: 1; border: none; outline: none; resize: none;
  padding: 28px 30px; background: var(--bg-content); color: var(--text);
  font-family: var(--mono); font-size: 13.5px; line-height: 1.8;
  tab-size: 2;
}
.preview-pane { flex: 1; min-width: 0; overflow-y: auto; }
.preview-pane .markdown-body { padding: 28px 34px 80px; max-width: 760px; margin: 0 auto; }

/* ================= Markdown 排版(Claude 风格) ================= */
.markdown-body {
  font-size: 16px; line-height: 1.75; color: var(--text);
  word-wrap: break-word;
}
.markdown-body > :first-child { margin-top: 0; }

.markdown-body h1, .markdown-body h2, .markdown-body h3,
.markdown-body h4, .markdown-body h5, .markdown-body h6 {
  font-weight: 700; line-height: 1.35; margin: 1.8em 0 .7em;
  scroll-margin-top: 20px;
}
.markdown-body h1 { font-size: 1.9em; margin-top: .4em; padding-bottom: .35em; border-bottom: 1px solid var(--border); }
.markdown-body h2 { font-size: 1.45em; padding-bottom: .25em; border-bottom: 1px solid var(--border); }
.markdown-body h3 { font-size: 1.2em; }
.markdown-body h4 { font-size: 1.05em; }
.markdown-body h5, .markdown-body h6 { font-size: 1em; color: var(--text-soft); }

.markdown-body p { margin: .9em 0; }
.markdown-body a { color: var(--link); text-decoration: none; }
.markdown-body a:hover { text-decoration: underline; }
.markdown-body strong { font-weight: 650; }
.markdown-body hr { border: none; border-top: 1px solid var(--border-strong); margin: 2.2em 0; }
.markdown-body img { max-width: 100%; border-radius: 8px; }

.markdown-body ul, .markdown-body ol { padding-left: 1.6em; margin: .9em 0; }
.markdown-body li { margin: .35em 0; }
.markdown-body li > p { margin: .35em 0; }
.markdown-body li.task { list-style: none; margin-left: -1.45em; }
.markdown-body li.task input { margin-right: .5em; accent-color: var(--accent); vertical-align: -1px; }

.markdown-body blockquote {
  margin: 1.1em 0; padding: .2em 1.1em;
  border-left: 3px solid var(--border-strong);
  color: var(--text-soft); background: var(--bg-code);
  border-radius: 0 8px 8px 0;
}

.markdown-body code {
  font-family: var(--mono); font-size: .875em;
  background: var(--bg-inline-code); padding: .18em .42em; border-radius: 5px;
}
.markdown-body pre code { background: none; padding: 0; font-size: .865em; }

.codeblock {
  margin: 1.15em 0; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; background: var(--bg-code);
}
.codeblock-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 12px; font-size: 12px; color: var(--muted);
  border-bottom: 1px solid var(--border); font-family: var(--mono);
}
.codeblock-copy {
  border: none; background: transparent; color: var(--muted); cursor: pointer;
  font-size: 12px; padding: 2px 6px; border-radius: 5px; font-family: var(--sans);
}
.codeblock-copy:hover { background: var(--bg-hover); color: var(--text); }
.codeblock pre { margin: 0; padding: 14px 16px; overflow-x: auto; line-height: 1.6; }
.hljs { background: transparent !important; }

.table-wrap { overflow-x: auto; margin: 1.15em 0; }
.markdown-body table { border-collapse: collapse; font-size: .93em; min-width: 50%; }
.markdown-body th, .markdown-body td {
  border: 1px solid var(--border-strong); padding: 8px 14px; text-align: left;
}
.markdown-body th { background: var(--bg-code); font-weight: 650; }
.markdown-body tr:nth-child(2n) td { background: var(--bg-code); }

.mermaid-box { margin: 1.15em 0; text-align: center; overflow-x: auto; }
.mermaid-box svg { max-width: 100%; }
.render-error {
  border: 1px solid #d99; background: rgba(220, 80, 80, .08);
  border-radius: 8px; padding: 10px 14px; font-size: 13px; margin: 1em 0;
  white-space: pre-wrap; font-family: var(--mono);
}
.katex-display { overflow-x: auto; overflow-y: hidden; padding: 2px 0; }
.katex-block { margin: 1.15em 0; overflow-x: auto; overflow-y: hidden; text-align: center; }
.katex-block .katex-display { margin: 0; }
.math-error {
  color: #b3403a; background: rgba(220, 80, 80, .08);
  padding: .1em .4em; border-radius: 4px; font-family: var(--mono); font-size: .9em;
}
.file-item .oversize {
  font-size: 10px; color: #b3773a; border: 1px solid currentColor;
  border-radius: 4px; padding: 0 4px; margin-left: 4px; vertical-align: 1px;
}

/* ================= Toast ================= */
.toast-wrap {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; gap: 8px; z-index: 100; align-items: center;
}
.toast {
  background: var(--text); color: var(--bg-content);
  padding: 9px 18px; border-radius: 999px; font-size: 13.5px;
  box-shadow: var(--shadow); animation: toast-in .2s ease;
  max-width: 80vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.toast.err { background: #b3403a; color: #fff; }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } }

.muted { color: var(--muted); }
.small { font-size: 12px; }
.pad { padding: 10px 12px; }

/* ================= 侧边栏底部 / 登录 ================= */
.sidebar-foot {
  margin-top: auto; padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--border); display: flex; gap: 8px;
}
.foot-btn {
  flex: 1; padding: 8px; border: 1px solid var(--border-strong); border-radius: 8px;
  background: var(--bg-content); color: var(--text-soft); cursor: pointer; font-size: 13px;
}
.foot-btn:hover { background: var(--bg-hover); color: var(--text); }

.modal-mask {
  position: fixed; inset: 0; z-index: 200; background: rgba(0,0,0,.4);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal {
  background: var(--bg-content); border: 1px solid var(--border); border-radius: 14px;
  padding: 22px; width: 340px; max-width: 100%; box-shadow: var(--shadow);
}
.modal-title { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.modal input {
  width: 100%; margin-top: 14px; padding: 10px 12px; border: 1px solid var(--border-strong);
  border-radius: 8px; background: var(--bg); color: var(--text); font-size: 15px; outline: none;
}
.modal input:focus { border-color: var(--accent); }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
.modal-err { margin-top: 12px; color: #b3403a; font-size: 13px; }

/* ================= 项目面板 ================= */
.project-list { overflow-y: auto; padding: 6px 8px 12px; }
.project-card { border: 1px solid var(--border); border-radius: 10px; margin-bottom: 8px; overflow: hidden; background: var(--bg-content); }
.project-head {
  display: flex; align-items: center; gap: 8px; padding: 9px 11px; cursor: pointer; user-select: none;
}
.project-head:hover { background: var(--bg-hover); }
.proj-caret { color: var(--muted); font-size: 11px; width: 12px; }
.proj-name { font-weight: 600; font-size: 13.5px; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.proj-count { font-size: 11px; color: var(--muted); background: var(--bg-active); border-radius: 999px; padding: 1px 8px; }
.project-body { border-top: 1px solid var(--border); padding: 8px; }
.project-bar { display: flex; gap: 5px; flex-wrap: wrap; margin-bottom: 8px; }
.mini {
  border: 1px solid var(--border-strong); background: var(--bg); color: var(--text-soft);
  border-radius: 6px; padding: 3px 8px; font-size: 12px; cursor: pointer;
}
.mini:hover { background: var(--bg-hover); color: var(--text); }
.mini.danger:hover { background: #b3403a; color: #fff; border-color: #b3403a; }
.proj-tree { display: flex; flex-direction: column; }
.proj-shares { margin-top: 8px; border-top: 1px dashed var(--border); padding-top: 8px; }
.share-row { display: flex; align-items: center; gap: 6px; padding: 3px 0; }
.share-link { flex: 1; font-family: var(--mono); font-size: 11.5px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* 分享只读模式:隐藏管理入口,只留分享目录树 */
.app.share-mode .tabs, .app.share-mode .sidebar-foot { display: none; }

/* 项目/主区拖拽高亮 */
.project-card.drag { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
.main.drop-target::after {
  content: "拖放到此处上传到当前项目"; position: absolute; inset: 8px; z-index: 30;
  border: 2px dashed var(--accent); border-radius: 12px; background: var(--accent-soft);
  display: flex; align-items: center; justify-content: center; color: var(--accent); font-weight: 600;
  pointer-events: none;
}
.main { position: relative; }

/* 后台管理整页 */
.settings { flex: 1; overflow-y: auto; }
.settings-inner { max-width: 760px; margin: 0 auto; padding: 28px 32px 100px; }
.settings-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.settings-head h1 { font-size: 22px; margin: 0; }
.set-card { background: var(--bg-content); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; margin-top: 16px; }
.set-card h2 { font-size: 15px; margin: 0 0 12px; }
.set-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 10px; }
.set-row input { flex: 1; min-width: 140px; padding: 9px 11px; border: 1px solid var(--border-strong); border-radius: 8px; background: var(--bg); color: var(--text); font-size: 14px; outline: none; }
.set-row input:focus { border-color: var(--accent); }
.set-field { margin-bottom: 6px; }
.set-field label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.set-path-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.set-path-row code { flex: 1; min-width: 200px; font-family: var(--mono); font-size: 13px; background: var(--bg-code); padding: 8px 10px; border-radius: 8px; overflow-x: auto; white-space: nowrap; }

.data-table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
.data-table th, .data-table td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; }
.data-table th { background: var(--bg-code); font-weight: 600; font-size: 12px; color: var(--text-soft); }
.data-table .ta-right { text-align: right; white-space: nowrap; }
.data-table .you { color: var(--accent); font-size: 11px; }

.share-group { margin-bottom: 12px; }
.share-group-h { font-size: 13px; font-weight: 600; margin-bottom: 4px; }
.share-item { border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; margin-bottom: 10px; }
.share-item .share-row { padding: 3px 0; }
.share-tag {
  font-size: 10px; color: var(--muted); border: 1px solid var(--border-strong);
  border-radius: 4px; padding: 1px 5px; flex-shrink: 0;
}
.data-table tr.row-off td { opacity: .55; }
.proj-owner {
  font-size: 10px; color: var(--accent); background: var(--accent-soft);
  border-radius: 4px; padding: 1px 6px; flex-shrink: 0;
}
.oidc-info { display: flex; flex-direction: column; gap: 6px; }
.kv { display: flex; gap: 10px; align-items: baseline; font-size: 13px; flex-wrap: wrap; }
.kv > span { color: var(--muted); min-width: 76px; }
.kv code { font-family: var(--mono); font-size: 12px; background: var(--bg-code); padding: 2px 6px; border-radius: 5px; word-break: break-all; }
#local-login input { width: 100%; margin-top: 10px; padding: 10px 12px; border: 1px solid var(--border-strong); border-radius: 8px; background: var(--bg); color: var(--text); font-size: 15px; outline: none; }
#local-login input:focus { border-color: var(--accent); }

/* ================= 移动端 ================= */
@media (max-width: 860px) {
  .sidebar {
    position: fixed; z-index: 20; height: 100%;
    box-shadow: var(--shadow);
  }
  .app.sidebar-hidden .sidebar { margin-left: -300px; }
  .app:not(.sidebar-hidden) .sidebar-mask {
    display: block; position: fixed; inset: 0; z-index: 15;
    background: rgba(0, 0, 0, .35);
  }
  .sidebar-close { display: inline-flex; }
  .reader .markdown-body { padding: 24px 20px calc(100px + env(safe-area-inset-bottom)); }
  .editor { flex-direction: column; }
  .editor-pane { border-right: none; border-bottom: 1px solid var(--border); }
  .toolbar { padding-top: calc(10px + env(safe-area-inset-top)); gap: 4px; }
  .toolbar-actions { gap: 2px; }
  .doc-badge { display: none; }   /* 窄屏优先展示文件名,省出空间 */
  .seg-btn { padding: 5px 10px; }
  /* iOS 上聚焦时字号 <16px 会触发自动放大,统一设为 16px 规避 */
  .url-form input, .editor-pane textarea { font-size: 16px; }
}

/* ================= 打印(导出 PDF) ================= */
@media print {
  /* 强制浅色排版,避免深色主题下打印几乎不可读 */
  :root, :root[data-theme="dark"] {
    --bg: #fff; --bg-content: #fff; --bg-code: #f6f6f2; --bg-inline-code: #eceae2;
    --text: #1a1a1a; --text-soft: #333; --muted: #666;
    --border: #ddd; --border-strong: #bbb; --link: #9a4f2c;
  }
  .sidebar, .sidebar-mask, .toolbar, .toast-wrap { display: none !important; }
  .app, .main, .reader { display: block; height: auto; overflow: visible; }
  html, body { background: #fff !important; color: #000; }
  .reader .markdown-body { max-width: none; padding: 0; color: #000; }
  .markdown-body .hljs, .codeblock { background: #f6f6f2 !important; }
  .codeblock, .markdown-body blockquote, .markdown-body table,
  .markdown-body img, .mermaid-box, .katex-block { break-inside: avoid; }
  .markdown-body h1, .markdown-body h2, .markdown-body h3 { break-after: avoid; }
  .codeblock pre { white-space: pre-wrap; word-break: break-all; }
  .codeblock-copy { display: none; }
  a { color: #000 !important; text-decoration: underline; }
}