/* === Reset & Base === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#1a1a1a;--bg2:#222;--bg3:#2a2a2a;--card:#222;
  --text:#ddd;--text2:#999;--accent:#fff;--accent2:#ccc;
  --green:#4a4;--orange:#c90;--red:#c44;--blue:#68c;
  --border:#333;--radius:8px;--font:14px/1.6 -apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --nav-h:48px;
}
html{background:var(--bg)}body{font:var(--font);background:var(--bg);color:var(--text);overflow:hidden;height:100vh}
html.light body,html.light{background:#F5F7FA;color:#1D2129;--bg:#F5F7FA;--bg2:#FFFFFF;--bg3:#F9FAFB;--card:#FFFFFF;--text:#1D2129;--text2:#4E5969;--border:#E5E6EB;--accent:#1D2129;--accent2:#4E5969}
html.light #nav{background:#FFFFFF;border-color:#E5E6EB}
html.light #nav .menu a:hover,html.light #nav .menu a.active{background:#EFF6FF;color:#2563EB}
html.light #nav .brand{color:#1D2129}
html.light #nav .brand .ver{background:#EFF6FF}
html.light #pageBar{background:#FFFFFF;border-color:#E5E6EB}
html.light .page-bar{background:#FFFFFF;border-color:#E5E6EB}
html.light .bar-title{color:#1D2129}
html.light .col-left,html.light .col-right,html.light .side-section,html.light .tree-item,html.light .version-item,html.light .version-header,html.light .card,html.light .board-col{background:#FFFFFF;border-color:#E5E6EB}
html.light .col-mid{background:#F5F7FA}
html.light #main{background:#F5F7FA}
html.light .tree-item:hover{background:#F9FAFB;color:#1D2129}
html.light .tree-item.active{background:#EFF6FF;color:#2563EB}
html.light .md-body h1,html.light .md-body h2,html.light .md-body strong,html.light .card-title,html.light .version-header .v-title,html.light .home-title,html.light .data-card .dc-value{color:#1D2129}
html.light .md-body blockquote{background:#F9FAFB}
html.light .md-body pre{background:#F9FAFB;border-color:#E5E6EB}
html.light .md-body th{background:#F9FAFB;color:#1D2129}
html.light .home-search input{background:#FFFFFF;border-color:#E5E6EB}
html.light .home-search button{background:#F9FAFB;color:#1D2129}
html.light .home-search button:hover{background:#EFF6FF}
html.light .modal{background:#FFFFFF;border-color:#E5E6EB}
html.light .modal h3{color:#1D2129}
html.light .modal-tab.active{color:#2563EB;border-color:#2563EB}
html.light .data-card{background:rgba(255,255,255,0.94);border-color:#E5E6EB}
html.light .data-card .dc-value{color:#1D2129}
html.light .editor-textarea{background:#F9FAFB;border-color:#E5E6EB;color:#1D2129}
html.light .ai-field input,.light .ai-field textarea{background:#F9FAFB;border-color:#E5E6EB;color:#1D2129}
html.light .board-item{background:#F9FAFB;border-color:#E5E6EB}
html.light .toolbar button,.light .modal-foot button{background:#F9FAFB;border-color:#E5E6EB;color:#1D2129}
html.light .toolbar button:hover,.light .modal-foot button:hover{background:#EFF6FF;color:#1D2129}
html.light .modal-foot button.primary{background:#2563EB;border-color:#2563EB;color:#fff}
html.light .modal-foot button.primary:hover{background:#1D4ED8}
html.light .modal-overlay{background:rgba(0,0,0,.3)}
html.light .side-tag{background:#F9FAFB;border-color:#E5E6EB}
html.light .side-tag:hover{background:#EFF6FF;color:#1D2129}
html.light .empty{color:#86909C}
html.light .pw-btn.primary{background:#2563EB;border-color:#2563EB;color:#fff}
html.light .pw-btn.primary:hover{background:#1D4ED8}
html.light .pw-btn.cancel{color:#4E5969;border-color:#E5E6EB}
html.light .pw-btn.cancel:hover{color:#1D2129;border-color:#86909C}
html.light .admin-save-btn.primary{background:#2563EB;border-color:#2563EB;color:#fff}
html.light .admin-save-btn.primary:hover{background:#1D4ED8}
html.light .admin-save-btn.cancel{color:#4E5969;border-color:#E5E6EB}
html.light .admin-save-btn.cancel:hover{color:#1D2129;border-color:#86909C}

/* === Nav === */
#nav{display:flex;align-items:center;height:var(--nav-h);background:#111;border-bottom:1px solid var(--border);padding:0 16px;position:fixed;top:0;left:0;right:0;z-index:100}
#nav .brand{font-size:17px;font-weight:700;color:#fff;white-space:nowrap;margin-right:24px}
#nav .brand .ver{font-size:10px;font-weight:400;color:var(--text2);background:var(--bg3);padding:1px 6px;border-radius:8px;margin-left:6px;vertical-align:middle}
#nav .menu{display:flex;gap:4px;flex:1;justify-content:center}
#nav .menu a{color:var(--text2);text-decoration:none;padding:6px 0;width:100px;text-align:center;border-radius:6px;font-size:13px;transition:.2s;cursor:pointer;white-space:nowrap}
#nav .menu a:hover,#nav .menu a.active{color:#fff;background:#333}
#nav .nav-right{display:flex;align-items:center;gap:12px;white-space:nowrap}
#nav .info{font-size:12px;color:var(--text2)}
#nav .theme-btn{font-size:16px;cursor:pointer;color:var(--text2);padding:2px 6px;border-radius:4px;transition:.2s}
#nav .theme-btn:hover{color:#fff;background:#333}
#nav .avatar{display:flex;align-items:center;cursor:pointer;opacity:.7;transition:.2s}
#nav .avatar:hover{opacity:1}

/* === Layout === */
#pageBar{position:fixed;top:var(--nav-h);left:0;right:0;z-index:99}
#main{margin-top:calc(var(--nav-h) + 42px);height:calc(100vh - var(--nav-h) - 42px);overflow:hidden}
.page{display:none;height:100%}
.page.active{display:flex;justify-content:center}

/* === Three-Column (Knowledge) === */
.three-col{display:flex;height:100%;overflow:hidden;width:100%;max-width:1500px}
.col-left{width:260px;min-width:200px;background:var(--bg2);border-right:1px solid var(--border);overflow-y:auto;overflow-x:hidden;flex-shrink:0}
.col-mid{flex:1;overflow-y:auto;padding:20px 24px;min-width:0;background:var(--bg);display:flex;flex-direction:column;align-items:center}
.col-mid>*{width:100%;max-width:860px}
.col-right{width:220px;min-width:160px;background:var(--bg2);border-left:1px solid var(--border);overflow-y:auto;overflow-x:hidden;flex-shrink:0}

/* === Directory Tree === */
.tree{font-size:13px;line-height:1.8}
.tree-item{padding:3px 8px;cursor:pointer;display:flex;align-items:center;gap:3px;border-radius:3px;margin:1px 4px;color:var(--text2);user-select:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex-wrap:wrap}
.tree-item:hover{background:var(--bg3);color:var(--text)}
.tree-item.active{background:#444;color:#fff;font-weight:600}
.tree-item .icon{font-size:12px;width:15px;text-align:center;flex-shrink:0}
.tree-item .label{overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0}
.tree-children{width:100%;padding-left:12px}
.tree-children.collapsed{display:none}
.tree-toggle{cursor:pointer;width:12px;text-align:center;font-size:9px;flex-shrink:0;color:var(--text2)}

/* === Markdown Content === */
.md-body{max-width:860px;line-height:1.8}
.md-body h1{font-size:22px;border-bottom:2px solid var(--border);padding-bottom:10px;margin-bottom:20px;color:#fff}
.md-body h2{font-size:17px;margin-top:28px;margin-bottom:10px;color:#eee}
.md-body h3{font-size:14px;margin-top:20px;color:var(--text)}
.md-body h4{font-size:13px;margin-top:16px;color:var(--text2)}
.md-body p{margin:10px 0}
.md-body pre{background:#111;padding:14px;border-radius:6px;overflow-x:auto;font-size:12px;line-height:1.6;border:1px solid var(--border)}
.md-body code{font-size:12px;background:var(--bg3);padding:2px 5px;border-radius:3px}
.md-body pre code{background:none;padding:0}
.md-body table{border-collapse:collapse;width:100%;margin:14px 0;font-size:12px}
.md-body td,.md-body th{border:1px solid var(--border);padding:7px 10px}
.md-body th{background:var(--bg3);font-weight:600;color:#fff}
.md-body blockquote{border-left:3px solid #555;padding:6px 14px;margin:10px 0;color:var(--text2);background:var(--bg2);border-radius:0 4px 4px 0}
.md-body hr{border:none;border-top:2px solid var(--border);margin:24px 0}
.md-body a{color:var(--blue)}
.md-body img{max-width:100%;border-radius:6px}
.md-body ul,.md-body ol{padding-left:24px;margin:8px 0}
.md-body li{margin:4px 0}
.md-body strong{color:#fff}

/* === Sidebar === */
.side-section{margin-bottom:18px}
.side-title{font-size:14px;color:#fff;margin-bottom:8px;letter-spacing:.5px;font-weight:600}
.side-tags{display:flex;flex-wrap:wrap;gap:4px}
.side-tag{font-size:12px;padding:3px 8px;border-radius:10px;background:var(--bg3);color:var(--text2);cursor:pointer;border:1px solid var(--border)}
.side-tag:hover{background:#444;color:#fff;border-color:#555}
.side-text{font-size:12px;color:var(--text2);line-height:1.7;word-break:break-all}
.col-right{padding:4px 8px}
.col-left{padding:4px 0}

/* === Toolbar === */
.toolbar{display:flex;gap:8px;margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--border);background:transparent}
.toolbar button{padding:6px 0;width:72px;border-radius:6px;border:1px solid var(--border);background:var(--bg3);color:var(--text);cursor:pointer;font-size:12px;transition:.2s;text-align:center}
.toolbar button:hover{background:#444;border-color:#555;color:#fff}
.toolbar button.primary{background:#555;border-color:#555;color:#fff}
.toolbar button.primary:hover{background:#666}
.toolbar button.danger:hover{background:var(--red);border-color:var(--red);color:#fff}

/* === Cards === */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;padding:20px 24px;overflow-y:auto;height:100%;align-content:start;max-width:1400px;margin:0 auto}
.card-grid.four-col{grid-template-columns:repeat(4,1fr)}
@media(min-width:1600px){.card-grid{grid-template-columns:repeat(5,1fr)}}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;cursor:pointer;transition:.2s;display:flex;flex-direction:column;height:148px}
.card:hover{border-color:#555;background:var(--bg3)}
.card-title{font-size:14px;font-weight:600;color:#fff;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.card-meta{font-size:11px;color:var(--text2);margin-top:auto}
.card-preview{font-size:12px;color:var(--text2);margin-top:8px;line-height:1.5;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;flex-shrink:0}

/* === Graph Page === */
.graph-wrap{position:relative;flex:1;height:100%;display:flex}
.graph-wrap iframe{width:100%;height:100%;border:none;background:#111}
.data-cards{position:absolute;right:16px;top:8px;width:260px;display:flex;flex-direction:column;gap:4px;z-index:10;max-height:calc(100% - 28px);overflow-y:auto}
.dc-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px}
.data-card{background:rgba(30,30,30,0.94);border:1px solid var(--border);border-radius:var(--radius);padding:10px 12px;backdrop-filter:blur(6px)}
.data-card .dc-label{font-size:10px;color:var(--text2);margin-bottom:3px;letter-spacing:.3px}
.data-card .dc-value{font-size:20px;font-weight:700;color:#fff}
.data-card .dc-sub{font-size:10px;color:var(--text2);margin-top:2px}
.data-card .dc-item{font-size:12px;color:var(--text2);padding:3px 0;display:flex;justify-content:space-between;line-height:1.6}
.data-card .dc-item .rank{color:#ccc;font-weight:600;margin-right:4px}
.dc-bar-row{display:flex;align-items:center;gap:6px;margin-bottom:4px}
.dc-bar-label{font-size:10px;color:var(--text2);width:56px;text-align:left;flex-shrink:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dc-bar{flex:1;height:5px;background:rgba(255,255,255,.1);border-radius:3px;overflow:hidden}
.dc-bar-inner{height:100%;border-radius:3px}
.dc-bar-val{font-size:10px;color:var(--text2);width:22px;text-align:right;flex-shrink:0}

/* === Todo Board === */
.board{display:flex;gap:14px;padding:20px 24px;height:100%;overflow-x:auto}
.board-col{flex:1;min-width:240px;background:var(--bg2);border-radius:var(--radius);padding:14px;display:flex;flex-direction:column}
.board-col h3{font-size:13px;color:var(--text2);margin-bottom:12px;letter-spacing:.5px;font-weight:600}
.board-items{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:6px}
.board-item{background:var(--bg3);border:1px solid var(--border);border-radius:6px;padding:10px 12px;cursor:grab;font-size:12px}
.board-item:hover{border-color:#555}
.board-item .bi-title{font-weight:600;margin-bottom:4px;color:var(--text)}
.board-item .bi-desc{font-size:11px;color:var(--text2)}
.board-add{margin-top:8px;padding:8px;border:1px dashed var(--border);border-radius:6px;text-align:center;cursor:pointer;font-size:12px;color:var(--text2)}
.board-add:hover{border-color:#555;color:var(--text)}

/* === Modal === */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:200;align-items:center;justify-content:center}
.modal-overlay.show{display:flex}
.modal{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:24px;width:1000px;max-width:92vw;height:68vh;max-height:85vh;display:flex;flex-direction:column;overflow:hidden}
.modal h3{margin-bottom:16px;color:#fff;font-size:18px;flex-shrink:0}
.modal .modal-body{flex:1;overflow-y:auto;min-height:0;display:flex;justify-content:center}
.modal .modal-body>*{width:100%;max-width:860px}
.modal .modal-foot{flex-shrink:0;padding-top:16px;border-top:1px solid var(--border);margin-top:16px}
.modal input,.modal textarea,.modal select{width:100%;padding:8px 12px;margin-bottom:12px;background:var(--bg3);border:1px solid var(--border);border-radius:6px;color:var(--text);font-size:13px}
.modal textarea{min-height:200px;font-family:monospace;resize:vertical}
.modal-actions{display:flex;gap:10px;justify-content:center;margin-top:12px}
.modal-foot{display:flex;justify-content:center;gap:12px}
.modal-foot button{padding:9px 0;border-radius:6px;cursor:pointer;font-size:13px;transition:.2s;width:140px}
.modal-foot button.cancel{background:transparent;border:1px solid var(--border);color:var(--text2)}
.modal-foot button.cancel:hover{color:var(--text);border-color:#555}
.modal-foot button.primary{background:#555;border:1px solid #555;color:#fff}
.modal-foot button.primary:hover{background:#666;border-color:#666}

/* === AI Action Buttons === */
.ai-actions{display:flex;gap:8px;margin-bottom:12px}
.ai-actions button{padding:8px 16px;border-radius:6px;border:1px solid var(--border);cursor:pointer;background:var(--bg3);color:var(--text2);font-size:12px;transition:.2s}
.ai-actions button:hover{background:#444;color:#fff;border-color:#555}

/* === Editor === */
.editor-textarea{width:100%;min-height:450px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-family:"JetBrains Mono","SF Mono",monospace;font-size:13px;line-height:1.7;padding:16px;resize:vertical}

/* === Scrollbar === */
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:#555}

/* === Homepage === */
.home-wrap{display:flex;flex-direction:column;align-items:center;padding-top:18vh;height:100%}
.home-title{font-size:32px;font-weight:300;color:#fff;margin-bottom:32px;letter-spacing:2px}
.home-search{display:flex;gap:8px;width:560px;max-width:80vw}
.home-search input{flex:1;padding:12px 18px;background:var(--bg2);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:15px;outline:none;transition:.2s;line-height:1.4}
.home-search input:focus{border-color:#555}
.home-search button{padding:12px 24px;background:#333;border:1px solid var(--border);border-radius:8px;color:var(--text);cursor:pointer;font-size:15px;transition:.2s;line-height:1.4}
.home-search button:hover{background:#444;color:#fff}
.search-input-wrap{flex:1;position:relative}
.search-input-wrap input{width:100%}

/* === Search Dropdown === */
.search-dropdown{display:none;position:absolute;top:100%;left:0;right:0;margin-top:4px;background:var(--bg2);border:1px solid var(--border);border-radius:8px;overflow:hidden;z-index:150;box-shadow:0 8px 24px rgba(0,0,0,.4)}
.search-dropdown.show{display:block}
.search-item{padding:10px 16px;cursor:pointer;transition:.15s;border-bottom:1px solid var(--border);display:flex;flex-direction:column;gap:2px}
.search-item:last-child{border-bottom:none}
.search-item:hover{background:var(--bg3)}
.si-title{font-size:13px;color:var(--text);font-weight:500}
.si-path{font-size:11px;color:var(--text2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
html.light .search-dropdown{box-shadow:0 8px 24px rgba(0,0,0,.1)}

/* === Search Results (Knowledge Page) === */
.search-result-list{padding:4px 0;overflow-y:auto;height:100%}
.search-result-item{display:flex;gap:10px;padding:10px 12px;cursor:pointer;transition:.15s;border-bottom:1px solid var(--border);align-items:flex-start}
.search-result-item:hover{background:var(--bg3)}
.search-result-item.active{background:#444}
.search-result-item.active .sr-title{color:#fff}
.sr-num{font-size:11px;color:var(--text2);width:20px;text-align:center;flex-shrink:0;line-height:1.8}
.sr-info{flex:1;min-width:0}
.sr-title{font-size:13px;color:var(--text);font-weight:500;margin-bottom:2px}
.sr-path{font-size:10px;color:var(--text2);margin-bottom:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sr-snippet{font-size:11px;color:var(--text2);line-height:1.5;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
html.light .search-result-item.active{background:#EFF6FF}
html.light .search-result-item.active .sr-title{color:#2563EB}

/* === Page Title Bar === */
.page-bar{display:flex;align-items:center;padding:10px 20px;background:#1c1c1c;border-bottom:1px solid var(--border);height:42px;gap:12px}
.bar-title{font-size:14px;font-weight:600;color:#fff}
.page-sub{font-size:11px;color:var(--text2)}

/* === Empty State === */
.empty{padding:40px;text-align:center;color:var(--text2);font-size:14px}

/* === Page Title === */
.page-title{font-size:16px;color:#fff;margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid var(--border)}

/* === Add Card === */
.card.add-card{display:flex;align-items:center;justify-content:center;flex-direction:column;border:2px dashed var(--border);background:transparent}
.card.add-card:hover{border-color:#555;background:var(--bg2)}
.card.add-card .plus{font-size:28px;color:var(--text2);margin-bottom:6px}
.card.add-card .label{font-size:12px;color:var(--text2)}

/* === Modal Tabs === */
.modal-tabs{display:flex;gap:0;margin-bottom:0;padding-bottom:12px;border-bottom:1px solid var(--border)}
.modal-tab{padding:8px 20px;cursor:pointer;font-size:13px;color:var(--text2);border-bottom:2px solid transparent;margin-bottom:-2px;transition:.2s}
.modal-tab:hover{color:var(--text)}
.modal-tab.active{color:#fff;border-bottom-color:#fff}
.modal-tab-panel{display:none}
.modal-tab-panel.active{display:block}

/* === AI Panel === */
.ai-field{margin-bottom:12px}
.ai-field label{display:block;font-size:12px;color:var(--text2);margin-bottom:4px}
.ai-field input,.ai-field textarea{width:100%;padding:8px 12px;background:var(--bg3);border:1px solid var(--border);border-radius:6px;color:var(--text);font-size:13px}
.ai-field textarea{min-height:100px;resize:vertical;font-family:var(--font)}

/* === Version History === */
.version-list{width:1000px;max-width:92vw;margin:0 auto;padding:20px 24px;overflow-y:auto;height:100%}
.version-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;background:var(--bg2);overflow:hidden}
.version-header{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;cursor:pointer;transition:.2s}
.version-header:hover{background:var(--bg3)}
.version-header .v-title{font-size:14px;font-weight:600;color:#fff}
.version-header .v-date{font-size:11px;color:var(--text2)}
.version-header .v-toggle{font-size:12px;color:var(--text2);transition:.2s}
.version-body{display:none;padding:0 18px 16px;font-size:13px;line-height:1.8;color:var(--text);white-space:pre-wrap}
.version-body.open{display:block}
.version-item.open .v-toggle{transform:rotate(180deg)}

/* === Nav Login & Admin Link === */
.nav-login{font-size:12px;color:var(--text2);cursor:pointer;padding:2px 6px;border-radius:4px;transition:.2s;user-select:none}
.nav-login:hover{color:#fff;background:#333}
.nav-login.logged-in{color:var(--green)}
html.light .nav-login:hover{color:#2563EB;background:#EFF6FF}
#adminLink{font-size:12px;color:var(--text2);cursor:pointer;padding:2px 6px;border-radius:4px;transition:.2s;user-select:none}
#adminLink:hover{color:#fff;background:#333}
html.light #adminLink:hover{color:#2563EB;background:#EFF6FF}
.login-error{color:var(--red);font-size:12px;margin-top:8px;text-align:center}

/* === Password Gate === */
.pw-gate{display:flex;align-items:center;justify-content:center;height:100%;width:100%}
.pw-card{width:360px;padding:40px 32px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg2);text-align:center}
.pw-icon{font-size:36px;margin-bottom:16px}
.pw-title{font-size:16px;font-weight:600;color:var(--text);margin-bottom:20px}
.pw-input{width:100%;padding:10px 14px;background:var(--bg3);border:1px solid var(--border);border-radius:6px;color:var(--text);font-size:14px;text-align:center;outline:none;letter-spacing:4px}
.pw-input:focus{border-color:#555}
.pw-error{height:20px;line-height:20px;font-size:12px;color:var(--red);margin-top:8px}
.pw-btns{display:flex;gap:12px;margin-top:16px}
.pw-btn{padding:9px 0;flex:1;border-radius:6px;cursor:pointer;font-size:13px;transition:.2s}
.pw-btn.cancel{background:transparent;border:1px solid var(--border);color:var(--text2)}
.pw-btn.cancel:hover{color:var(--text);border-color:#555}
.pw-btn.primary{background:#555;border:1px solid #555;color:#fff}
.pw-btn.primary:hover{background:#666;border-color:#666}

/* === Admin Page === */
.admin-wrap{width:100%;max-width:720px;margin:0 auto;padding:20px 0;height:100%;overflow-y:auto;display:flex;flex-direction:column}
.admin-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;flex-shrink:0}
.admin-back{font-size:12px;color:var(--text2);cursor:pointer;transition:.2s;user-select:none;margin-right:8px}
.admin-back:hover{color:var(--blue,#68c)}
.admin-title{font-size:16px;font-weight:600;color:var(--text)}
.admin-tabs{display:flex;gap:0;margin-bottom:20px;flex-shrink:0;border-bottom:1px solid var(--border)}
.admin-tab{padding:10px 24px;cursor:pointer;font-size:14px;color:var(--text2);border-bottom:2px solid transparent;margin-bottom:-1px;transition:.2s;user-select:none}
.admin-tab:hover{color:var(--text)}
.admin-tab.active{color:#fff;border-bottom-color:#fff}
html.light .admin-tab.active{color:#2563EB;border-bottom-color:#2563EB}
.admin-body{flex:1;overflow-y:auto;min-height:0}
.admin-actions{flex-shrink:0;display:flex;justify-content:center;padding-top:20px;gap:12px}
.admin-save-btn{padding:9px 0;width:400px;border-radius:6px;cursor:pointer;font-size:13px;transition:.2s;text-align:center;line-height:1.3}
.admin-save-btn.cancel{background:transparent;border:1px solid var(--border);color:var(--text2)}
.admin-save-btn.cancel:hover{color:var(--text);border-color:#555}
.admin-save-btn.primary{background:#555;border:1px solid #555;color:#fff}
.admin-save-btn.primary:hover{background:#666;border-color:#666}
.btn-sub{display:block;font-size:10px;opacity:.6;margin-top:1px}

/* === Admin Card === */
.admin-card{border:1px solid var(--border);border-radius:var(--radius);background:var(--bg2);padding:20px 24px;margin-bottom:16px}
.admin-section{margin-bottom:20px}
.admin-section:last-child{margin-bottom:0}
.sec-title{font-size:12px;color:var(--text2);margin-bottom:12px;letter-spacing:.5px;font-weight:600}

/* === Admin Row === */
.admin-row{display:flex;align-items:center;justify-content:space-between;padding:7px 0}
.row-label{font-size:13px;color:var(--text)}

/* === Toggle Switch === */
.toggle-switch{cursor:pointer;display:inline-flex;align-items:center;gap:10px;user-select:none}
.toggle-track{width:44px;height:24px;border-radius:12px;background:#555;display:inline-block;position:relative;transition:background .2s}
.toggle-switch input:checked+.toggle-track{background:#888}
.toggle-thumb{width:18px;height:18px;border-radius:50%;background:#999;position:absolute;top:3px;left:3px;transition:transform .2s}
.toggle-switch input:checked+.toggle-track .toggle-thumb{background:#fff;transform:translateX(20px)}
html.light .toggle-track{background:#C9CDD4}
html.light .toggle-switch input:checked+.toggle-track{background:#2563EB}
html.light .toggle-thumb{background:#86909C}
html.light .toggle-switch input:checked+.toggle-track .toggle-thumb{background:#fff}
.toggle-state{font-size:12px;color:var(--text2);width:24px;display:inline-block}

/* === Radio === */
.radio-label{font-size:13px;color:var(--text2);cursor:pointer;margin-left:16px;display:inline-flex;align-items:center;gap:4px}
.radio-label input[type="radio"]{accent-color:#888}
html.light .radio-label input[type="radio"]{accent-color:#2563EB}

/* === User Table === */
.user-table{width:100%;border-collapse:collapse;font-size:13px}
.user-table th{text-align:left;padding:8px 12px;font-size:11px;color:var(--text2);font-weight:600;border-bottom:1px solid var(--border)}
.user-table td{padding:10px 12px;border-bottom:1px solid var(--border);vertical-align:middle}
.user-table .uname{font-weight:600;color:var(--text)}
.u-actions{display:flex;gap:8px}
.btn-text{padding:3px 8px;border-radius:4px;border:none;background:transparent;color:var(--text2);cursor:pointer;font-size:12px;transition:.2s}
.btn-text:hover{color:var(--text);background:var(--bg3)}
.btn-text.danger:hover{color:var(--red);background:rgba(204,68,68,.1)}
.btn-text.ok:hover{color:var(--green)}
.add-user-row{padding-top:12px}
.add-user-btn{padding:8px 16px;border-radius:6px;border:1px dashed var(--border);background:transparent;color:var(--text2);cursor:pointer;font-size:13px;transition:.2s;width:100%}
.add-user-btn:hover{border-color:#555;color:var(--text)}

/* === Badges === */
.role-badge{display:inline-block;padding:2px 10px;border-radius:10px;font-size:11px;font-weight:600}
.role-admin{background:#555;color:#fff}
.role-editor{background:rgba(68,170,68,.15);color:var(--green)}
.role-viewer{background:var(--bg3);color:var(--text2)}
.status-badge{font-size:11px}
.status-on{color:var(--green)}
.status-off{color:var(--red)}

/* === Permission List === */
.perm-list{display:flex;flex-direction:column;gap:8px}
.perm-item{display:flex;align-items:center;gap:12px}
.perm-desc{font-size:12px;color:var(--text2)}

/* === Toast === */
.toast{position:fixed;bottom:24px;right:24px;padding:12px 24px;border-radius:8px;background:#333;color:#fff;font-size:13px;z-index:300;opacity:0;transform:translateY(10px);transition:opacity .3s,transform .3s;pointer-events:none}
.toast.show{opacity:1;transform:translateY(0)}
.toast.toast-error{background:var(--red)}
html.light .toast{background:#1D2129;color:#fff}

/* === 头像下拉 === */
#avatarBtn{position:relative;cursor:default;transition:opacity .2s}
#avatarBtn:hover{opacity:.8}
.avatar-dropdown{position:absolute;top:44px;right:16px;background:var(--bg2);border:1px solid var(--border);border-radius:8px;padding:4px 0;min-width:140px;z-index:200;box-shadow:0 4px 12px rgba(0,0,0,.15)}
.av-drop-item{padding:8px 16px;font-size:13px;color:var(--text);white-space:nowrap;cursor:pointer}
.av-drop-item:hover{background:var(--bg3)}
.av-drop-name{font-weight:600;cursor:default}
.av-drop-name:hover{background:transparent}
.av-drop-role{color:var(--text2);font-size:12px;padding-top:0;cursor:default}
.av-drop-role:hover{background:transparent}
.av-drop-sep{height:1px;background:var(--border);margin:4px 8px;cursor:default}
.av-drop-action{cursor:pointer;color:var(--red,#c44)}

/* === Admin Page Body Centering === */
#page-admin .admin-wrap{justify-content:flex-start}
#page-admin.active{display:flex}

/* === AI 问答页 === */
#page-ask{display:none;flex-direction:column;height:100%}
#page-ask.active{display:flex}
.ask-wrap{display:flex;flex-direction:column;height:100%;max-width:800px;margin:0 auto;width:100%}
.ask-list{flex:1;overflow-y:auto;padding:16px 24px;display:flex;flex-direction:column;gap:12px}
.ask-welcome{text-align:center;padding:60px 20px 20px}
.ask-welcome-icon{font-size:48px;margin-bottom:12px}
.ask-welcome-title{font-size:20px;font-weight:700;color:var(--accent);margin-bottom:8px}
.ask-welcome-sub{font-size:13px;color:var(--text2)}
.ask-msg{display:flex;max-width:85%}
.ask-user{align-self:flex-end}
.ask-ai{align-self:flex-start;flex-direction:column}
.ask-bubble{padding:10px 14px;border-radius:12px;font-size:14px;line-height:1.6}
.ask-user .ask-bubble{background:var(--blue,#68c);color:#fff;border-bottom-right-radius:4px}
.ask-ai .ask-bubble{background:var(--bg3);color:var(--text);border-bottom-left-radius:4px}
.ask-error .ask-bubble{color:var(--red,#c44)}
.ask-bubble code{background:rgba(0,0,0,.15);padding:1px 5px;border-radius:3px;font-size:12px}
.ask-bubble strong{color:inherit}
.ask-loading .ask-bubble{min-width:40px;text-align:center}
.ask-dot{animation:ask-pulse 1.4s infinite}
@keyframes ask-pulse{0%,80%,100%{opacity:.3}40%{opacity:1}}
.ask-sources{margin-top:8px;padding:0 14px;font-size:12px;color:var(--text2);display:flex;flex-direction:column;gap:2px}
.ask-src-label{font-weight:500;margin-bottom:2px}
.ask-src-link{color:var(--blue,#68c);cursor:pointer;text-decoration:none;padding:2px 0}
.ask-src-link:hover{opacity:.8;text-decoration:underline}
.ask-foot{border-top:1px solid var(--border);padding:24px;background:var(--bg)}
.ask-input-row{display:flex;gap:8px;align-items:stretch}
.ask-input-row input{flex:1;padding:10px 14px;background:var(--bg2);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:14px;outline:none}
.ask-input-row input:focus{border-color:var(--blue,#68c)}
.ask-send-btn{display:none}
.ask-actions{display:flex;justify-content:flex-end;margin-top:4px}
.ask-action-link{font-size:12px;color:var(--text2);cursor:pointer}
.ask-action-link:hover{color:var(--text)}

/* === AI 复用弹窗 === */
.reuse-result{margin-top:12px;max-height:360px;overflow-y:auto}
.reuse-content{font-size:14px;line-height:1.6;color:var(--text);white-space:pre-line}
.reuse-content h1,.reuse-content h2,.reuse-content h3{color:var(--accent);margin:8px 0 4px}
.reuse-loading,.ai-loading{padding:12px 0;text-align:center;color:var(--text2);font-size:13px}

/* === 管理设置 AI Key === */
.ai-key-input{padding:6px 10px;background:var(--bg2);border:1px solid var(--border);border-radius:6px;color:var(--text);font-size:13px;outline:none;width:100%;max-width:400px;flex-shrink:0}
.ai-key-input:focus{border-color:var(--blue,#68c)}

/* === 图片懒加载 === */
.lazy-img{opacity:0;transition:opacity .3s;background:var(--bg3);min-width:20px;min-height:20px}
.lazy-img.loaded{opacity:1;background:transparent}

/* === 浅色模式补充 === */
html.light .ask-user .ask-bubble{background:#2563EB;color:#fff}
html.light .ask-src-link{color:#2563EB}