[x-cloak]{display:none !important}
:root{--bg:#fff;--bg-alt:#f9f9f9;--hover:#ececec;--border:#e5e5e5;--text:#0d0d0d;--muted:#676767;--green:#10a37f;--green-bg:#ecfdf5;--red:#ef4444;--amber:#f59e0b}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);display:flex;height:100vh;height:100dvh;overflow:hidden;font-size:15px;-webkit-font-smoothing:antialiased}

/* Sidebar */
.sidebar{width:280px;background:var(--bg);display:flex;flex-direction:column;border-right:1px solid var(--border);flex-shrink:0;overflow:hidden}
.sidebar-header{padding:16px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border)}
.sidebar-header .logo{width:28px;height:28px;background:var(--green);border-radius:6px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:13px}
.sidebar-header span{font-weight:600;font-size:16px}
.nav-section{flex:1;overflow-y:auto;padding:12px 10px}
.nav-item{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:10px;cursor:pointer;font-size:16px;font-weight:500;color:var(--text);transition:background .15s;border:none;background:none;width:100%;text-align:left;font-family:inherit;overflow:hidden}
.nav-item:hover,.nav-item.active{background:var(--hover)}
.nav-item svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.sidebar-footer{padding:16px;border-top:1px solid var(--border);display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--green);flex-shrink:0}
.logout-btn{margin-left:auto;background:none;border:none;cursor:pointer;padding:6px;border-radius:6px;color:var(--muted);transition:background .15s,color .15s;display:flex;align-items:center;justify-content:center}
.logout-btn:hover{background:var(--hover);color:var(--text)}

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

/* Topbar */
.topbar{height:56px;border-bottom:1px solid var(--border);padding:0 20px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0;background:#fff;gap:12px}
.topbar-left{display:flex;align-items:center;gap:12px;min-width:0;flex:1}
.topbar-right{display:flex;align-items:center;gap:8px;flex-shrink:0;position:relative}
.topbar-title{font-weight:600;font-size:16px}
.topbar .sel{padding:6px 28px 6px 10px;border:1px solid var(--border);border-radius:8px;font-size:13px;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23676767' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") no-repeat right 10px center;outline:none;font-family:inherit;max-width:260px;cursor:pointer;appearance:none;-webkit-appearance:none;-moz-appearance:none}
.icon-btn{width:34px;height:34px;border-radius:8px;border:1px solid var(--border);background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.15s;flex-shrink:0}
.icon-btn:hover{background:var(--hover)}
.icon-btn.active{background:var(--green-bg);border-color:var(--green)}
.icon-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.mh-btn{display:none;background:none;border:none;cursor:pointer;padding:4px;font-size:20px}
.overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:50}

/* Config dropdown */
.cfg-dropdown{position:absolute;top:44px;right:0;width:340px;background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:0 4px 24px rgba(0,0,0,.12);z-index:80}
.cfg-head{padding:14px 16px;border-bottom:1px solid var(--border);font-weight:600;font-size:14px;border-radius:12px 12px 0 0}
.cfg-body{padding:8px 0}
.cfg-item{padding:10px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.cfg-item:hover{background:var(--bg-alt)}
.cfg-info{flex:1;min-width:0}
.cfg-name{font-size:14px;font-weight:500}
.cfg-desc{font-size:12px;color:var(--muted);margin-top:1px}
.cfg-item:last-child{border-radius:0 0 12px 12px}
.cfg-ctrl{flex-shrink:0}
.cfg-select{padding:5px 8px;border:1px solid var(--border);border-radius:6px;font-size:13px;background:#fff;outline:none;font-family:inherit;min-width:100px;appearance:none;-webkit-appearance:none;-moz-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%23676767' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center;padding-right:26px;cursor:pointer}
.cfg-select:focus{border-color:var(--green)}
.cfg-num{width:72px;padding:5px 8px;border:1px solid var(--border);border-radius:6px;font-size:13px;text-align:center;outline:none}
.cfg-num:focus{border-color:var(--green)}

/* Pages */
.page-wrap{display:none;flex:1;overflow:hidden}
.page-wrap.active{display:flex;flex-direction:column}
.scroll-area{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}
.page-pad{max-width:1024px;width:100%;margin:0 auto;padding:32px 24px 80px}

.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:32px}
.stat-card{background:var(--bg-alt);border:1px solid var(--border);border-radius:12px;padding:16px;display:flex;flex-direction:column;justify-content:center;min-height:90px}
.stat-card .slabel{font-size:13px;color:var(--muted);margin-bottom:4px;font-weight:500}
.stat-card .sval{font-size:20px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;line-height:1.2}
.stat-card .sval-amber{color:var(--amber)}
.card{border:1px solid var(--border);border-radius:12px;margin-bottom:24px;background:#fff;position:relative}
.card-head{padding:16px 20px;border-bottom:1px solid var(--border);font-weight:600;font-size:15px;display:flex;align-items:center;justify-content:space-between;border-radius:12px 12px 0 0}
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:12px 16px;font-size:14px;border-bottom:1px solid var(--border)}
th{color:var(--muted);font-weight:500;font-size:13px}
tr:last-child td{border-bottom:none}
.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:500}
.badge-green{background:var(--green-bg);color:#065f46}
.badge-red{background:#fef2f2;color:#991b1b}
.badge-gray{background:#f3f4f6;color:#374151}
.btn{padding:8px 16px;border-radius:8px;border:1px solid var(--border);background:#fff;cursor:pointer;font-size:14px;font-weight:500;transition:.15s;font-family:inherit;display:inline-flex;align-items:center;gap:6px}
.btn:hover{background:var(--hover)}
.btn-primary{background:var(--green);color:#fff;border-color:var(--green)}
.btn-primary:hover{background:#0e8c6b}
.btn-danger{background:#fff;color:var(--red);border-color:var(--border)}
.btn-danger:hover{background:#fef2f2;border-color:var(--red)}
.btn-block{width:100%;justify-content:center}
.btn-sm{padding:4px 12px;font-size:13px}
.cfg-sep{height:1px;background:var(--border);margin:4px 16px}
select.sel,.sel{padding:8px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;background:#fff;outline:none;font-family:inherit;appearance:none;-webkit-appearance:none;-moz-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23676767' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;padding-right:30px;cursor:pointer}
select.sel:hover,.sel:hover{border-color:#a3a3a3}
select.sel:focus,.sel:focus{border-color:var(--green);box-shadow:0 0 0 2px rgba(16,163,127,.15)}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.table-wrap table{min-width:580px}

/* Custom Select */
.cselect{position:relative;display:inline-block;min-width:100px}
.cselect-btn{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:5px 8px;border:1px solid var(--border);border-radius:6px;font-size:13px;background:#fff;cursor:pointer;font-family:inherit;user-select:none;transition:border-color .15s;min-width:inherit}
.cselect-btn:hover{border-color:#a3a3a3}
.cselect-btn:focus,.cselect.open .cselect-btn{border-color:var(--green);box-shadow:0 0 0 2px rgba(16,163,127,.12);outline:none}
.cselect-btn .arrow{width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid var(--muted);flex-shrink:0;transition:transform .2s}
.cselect.open .cselect-btn .arrow{transform:rotate(180deg)}
.cselect-menu{position:absolute;top:calc(100% + 4px);left:0;min-width:100%;background:#fff;border:1px solid var(--border);border-radius:8px;box-shadow:0 4px 16px rgba(0,0,0,.1);z-index:90;max-height:240px;overflow-y:auto;padding:4px 0;opacity:0;transform:translateY(-4px);pointer-events:none;transition:opacity .15s,transform .15s}
.cselect.open .cselect-menu{opacity:1;transform:translateY(0);pointer-events:auto}
.cselect-opt{padding:7px 12px;font-size:13px;cursor:pointer;display:flex;align-items:center;gap:8px;transition:background .1s}
.cselect-opt:hover{background:var(--bg-alt)}
.cselect-opt.active{color:var(--green);font-weight:500}
.cselect-opt.active::before{content:'✓';font-size:12px}
.cselect-lg .cselect-btn{padding:8px 12px;font-size:14px;border-radius:8px}

/* Chat page */
#chat-page{display:none;flex-direction:column;overflow:hidden;flex:1}
#chat-page.active{display:flex}
#chat-scroll{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}
.msg{padding:20px 0}
.msg-inner{max-width:1024px;margin:0 auto;padding:0 24px;display:flex;gap:16px;width:100%}
.msg-ai{background:var(--bg-alt)}
.avatar{width:28px;height:28px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:11px;color:#fff;flex-shrink:0}
.avatar-user{background:#5436DA}
.avatar-ai{background:var(--green)}
.msg-body{flex:1;line-height:1.6;white-space:normal;word-break:break-word}
.msg-body.error{color:var(--red);white-space:pre-wrap}

/* Markdown Styles */
.markdown-body { flex: 1; color: var(--text); font-size: 15px; }
.markdown-body p { margin-bottom: 8px; }
.markdown-body p:last-child { margin-bottom: 0; }
.markdown-body h1, .markdown-body h2, .markdown-body h3, .markdown-body h4 { margin: 16px 0 8px; font-weight: 600; line-height: 1.3; }
.markdown-body h1 { font-size: 1.6em; }
.markdown-body h2 { font-size: 1.4em; border-bottom: 1px solid var(--border); padding-bottom: 4px; }
.markdown-body h3 { font-size: 1.2em; }
.markdown-body img { max-width: 100%; max-height: 600px; object-fit: contain; border-radius: 12px; margin: 8px 0; border: 1px solid var(--border); display: block; }

/* Table */
.markdown-body table { border-collapse: separate; border-spacing: 0; width: 100%; margin: 16px 0; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: #fff; }
.markdown-body th, .markdown-body td { padding: 10px 14px; border-bottom: 1px solid var(--border); border-right: 1px solid var(--border); text-align: left; }
.markdown-body th { background: var(--bg-alt); font-weight: 600; color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: 0.02em; }
.markdown-body tr:last-child td { border-bottom: none; }
.markdown-body th:last-child, .markdown-body td:last-child { border-right: none; }
.markdown-body tr:hover td { background: rgba(0,0,0,0.01); }

/* Code Blocks */
.markdown-body pre { background: #f6f8fa; padding: 16px; border-radius: 10px; overflow-x: auto; margin: 14px 0; border: 1px solid var(--border); position: relative; }
.markdown-body code { font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace; background: rgba(0,0,0,0.04); padding: 2px 5px; border-radius: 4px; font-size: 0.85em; color: #d1355b; }
.markdown-body pre code { background: transparent; padding: 0; color: inherit; font-size: 13.5px; line-height: 1.5; }

/* Links & Lists */
.markdown-body a { color: var(--green); text-decoration: none; font-weight: 500; }
.markdown-body a:hover { text-decoration: underline; }
.markdown-body ul, .markdown-body ol { padding-left: 24px; margin-bottom: 8px; }
.markdown-body li { margin-bottom: 2px; }

/* Blockquote */
.markdown-body blockquote { margin: 12px 0; padding: 0 16px; color: var(--muted); border-left: 4px solid var(--border); }

/* Math */
.katex-display { margin: 12px 0; overflow-x: auto; overflow-y: hidden; }
.katex { font-size: 1.1em; }

/* Thinking block */
.think-block{margin-bottom:8px;border:1px solid var(--border);border-radius:8px;overflow:hidden;cursor:pointer}
.think-toggle{display:flex;align-items:center;gap:6px;padding:8px 12px;font-size:13px;color:var(--muted);font-weight:500;transition:background .15s}
.think-toggle:hover{background:var(--bg-alt)}
.think-icon{font-size:14px}
.think-arrow{margin-left:auto;font-size:16px;transition:transform .2s}
.think-arrow.open{transform:rotate(90deg)}
.think-body{padding:0 12px 12px;font-size:13px;color:var(--muted);line-height:1.6;white-space:pre-wrap;word-break:break-word;max-height:300px;overflow-y:auto}
.welcome{display:flex;flex-direction:column;align-items:center;justify-content:center;height:50vh;text-align:center;color:var(--muted)}
.welcome h2{font-size:24px;font-weight:600;color:var(--text);margin-bottom:8px}

/* Input */
#input-area{flex-shrink:0;padding:8px 24px 20px;background:#fff;display:flex;justify-content:center}
#input-box{width:100%;border:1px solid var(--border);border-radius:12px;box-shadow:0 0 8px rgba(0,0,0,.04);display:flex;align-items:flex-end;padding:8px;gap:6px;background:#fff}
#input-box:focus-within{border-color:#a3a3a3}
#input-box textarea{flex:1;border:none;outline:none;resize:none;font-family:inherit;font-size:15px;padding:6px 8px;max-height:200px;min-height:24px;line-height:1.5;background:transparent}
#input-box .send{width:32px;height:32px;border-radius:8px;background:var(--green);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0}
#input-box .send:disabled{background:var(--border);cursor:default}
#input-box .send svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2.5}

/* Toast */
.toast{position:fixed;bottom:16px;right:16px;background:#1e1e1e;color:#fff;padding:10px 16px;border-radius:8px;font-size:14px;z-index:200;opacity:0;transition:opacity .3s;pointer-events:none}
.toast.show{opacity:1}

/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center;z-index:150;padding:16px}
.modal{background:#fff;border-radius:14px;box-shadow:0 8px 40px rgba(0,0,0,.18);width:100%;max-width:520px;display:flex;flex-direction:column;max-height:90vh}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border);font-weight:600;font-size:16px}
.modal-close{background:none;border:none;font-size:22px;cursor:pointer;color:var(--muted);padding:0 4px;line-height:1}
.modal-close:hover{color:var(--text)}
.modal-body{padding:20px;overflow-y:auto;display:flex;flex-direction:column;gap:16px}
.modal-field{display:flex;flex-direction:column;gap:6px}
.modal-field label{font-size:13px;font-weight:500}
.modal-input{padding:8px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;outline:none}
.modal-input:focus{border-color:var(--green);box-shadow:0 0 0 2px rgba(16,163,127,.15)}
.modal-textarea{padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:13px;font-family:monospace;outline:none;resize:vertical;line-height:1.6}
.modal-textarea:focus{border-color:var(--green);box-shadow:0 0 0 2px rgba(16,163,127,.15)}
.modal-foot{display:flex;justify-content:flex-end;gap:8px;padding:12px 20px;border-top:1px solid var(--border)}

@media(max-width:768px){
  .sidebar{position:fixed;inset:0;z-index:60;transform:translateX(-100%);transition:transform .3s;width:300px}
  .sidebar.open{transform:translateX(0)}
  .overlay.open{display:block}
  .mh-btn{display:block}
  .topbar .sel{max-width:150px;font-size:12px}
  .stat-grid{grid-template-columns:1fr}
  .cfg-dropdown{width:calc(100vw - 32px);right:-8px}
  .msg-inner{padding:0 16px}
  #input-area{padding:8px 16px 16px}
}

/* Image Upload & Preview */
.upload-btn{width:32px;height:32px;border-radius:8px;background:none;color:var(--muted);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .15s,color .15s}
.upload-btn:hover{background:var(--hover);color:var(--text)}
.upload-btn svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:2}

.preview-container{display:flex;flex-wrap:wrap;gap:8px;padding:4px 8px;width:100%}
.preview-item{position:relative;width:64px;height:64px;border-radius:8px;overflow:hidden;border:1px solid var(--border)}
.preview-item img{width:100%;height:100%;object-fit:cover}
.preview-remove{position:absolute;top:2px;right:2px;width:16px;height:16px;background:rgba(0,0,0,0.5);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;cursor:pointer;border:none;line-height:1}
.preview-remove:hover{background:rgba(0,0,0,0.8)}

.input-wrap{max-width:1024px;width:100%;display:flex;flex-direction:column;gap:8px}

.msg-images{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.msg-img-item{max-width:300px;max-height:300px;border-radius:8px;overflow:hidden;border:1px solid var(--border);cursor:pointer}
.msg-img-item img{display:block;max-width:100%;height:auto}