.shell{display:grid;grid-template-columns:240px 1fr;height:100vh;overflow:hidden}.nav-rail{background:linear-gradient(180deg,#1b1e3a,#14162b);color:#cbd0e6;display:flex;flex-direction:column;justify-content:space-between;padding:20px 14px;min-height:0}.nav-brand{display:flex;align-items:center;gap:11px;padding:4px 8px 20px}.nav-brand-mark{width:38px;height:38px;border-radius:10px;font-size:19px}.nav-brand-title{font-weight:700;font-size:15px;color:#fff;letter-spacing:-.01em}.nav-brand-sub{font-size:11px;color:#8b90b5;text-transform:uppercase;letter-spacing:.08em}.nav-items{display:flex;flex-direction:column;gap:4px}.nav-item{display:flex;align-items:center;gap:12px;width:100%;padding:11px 12px;border:none;background:transparent;color:#b6bbd8;border-radius:10px;font-size:14px;font-weight:500;text-align:left;transition:background .14s,color .14s}.nav-item:hover{background:#ffffff0f;color:#fff}.nav-item.active{background:var(--primary);color:#fff;box-shadow:0 4px 12px #4f46e566}.nav-item-icon{font-size:16px;width:20px;text-align:center}.nav-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:14px}.nav-user{display:flex;align-items:center;gap:10px;padding:4px 8px 12px}.nav-user-avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--primary),#7c73f0);color:#fff;display:grid;place-items:center;font-weight:700;font-size:14px}.nav-user-name{font-size:13px;font-weight:600;color:#fff}.nav-user-role{font-size:11px;color:#8b90b5}.nav-logout{width:100%;padding:9px;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);color:#cbd0e6;border-radius:9px;font-size:13px;font-weight:600;transition:background .14s}.nav-logout:hover{background:#ef44442e;border-color:#ef444466;color:#fecaca}.shell-main{min-width:0;min-height:0;overflow:hidden;display:flex;flex-direction:column}.btn{border:1px solid var(--border-strong);background:#fff;color:var(--text);padding:9px 16px;border-radius:9px;font-size:13px;font-weight:600;transition:background .12s,box-shadow .12s,opacity .12s}.btn:hover{background:var(--surface-2)}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:var(--shadow-sm)}.btn-primary:hover{background:var(--primary-dark)}.btn:disabled{opacity:.6;cursor:default}.updated{font-size:12px;color:var(--text-faint)}.login{height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;background:radial-gradient(circle at 30% 20%,#23264a,#14162b 55%,#0e1020);padding:24px}.login-card{width:100%;max-width:380px;background:var(--surface);border-radius:16px;padding:34px 32px 26px;box-shadow:0 24px 60px #00000059}.login-brand{text-align:center;margin-bottom:26px}.login-mark{width:52px;height:52px;border-radius:14px;font-size:26px;margin:0 auto 12px}.login-brand-title{font-size:20px;font-weight:700;letter-spacing:-.02em}.login-brand-sub{font-size:13px;color:var(--text-muted);margin-top:2px}.login-form{display:flex;flex-direction:column;gap:16px}.field{display:flex;flex-direction:column;gap:6px}.field>span{font-size:12px;font-weight:600;color:var(--text-muted)}.field input{width:100%;padding:11px 13px;border:1px solid var(--border);border-radius:10px;font-size:14px;background:var(--surface-2);outline:none;transition:border-color .15s,box-shadow .15s,background .15s}.field input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft);background:#fff}.pw-wrap{position:relative}.pw-toggle{position:absolute;right:8px;top:50%;transform:translateY(-50%);border:none;background:transparent;color:var(--text-muted);font-size:12px;font-weight:600;padding:4px 8px}.login-error{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;font-size:13px;padding:9px 12px;border-radius:9px}.login-submit{margin-top:4px;padding:12px;font-size:14px}.login-hint{margin-top:20px;text-align:center;font-size:12px;color:var(--text-faint)}.login-hint code{background:var(--surface-2);border:1px solid var(--border);padding:1px 6px;border-radius:5px;font-size:11px;color:var(--text)}.login-footer{font-size:12px;color:#6b7099}.dashboard{height:100%;overflow-y:auto;padding:28px 32px 40px}.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:24px}.page-head h1{margin:0;font-size:24px;font-weight:700;letter-spacing:-.02em}.page-head p{margin:4px 0 0;font-size:14px;color:var(--text-muted)}.page-head-actions{display:flex;align-items:center;gap:14px}.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:22px}.kpi{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;display:flex;gap:14px;align-items:flex-start;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}.kpi:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px}.kpi-indigo:before{background:#4f46e5}.kpi-green:before{background:#10b981}.kpi-amber:before{background:#f59e0b}.kpi-pink:before{background:#ec4899}.kpi-icon{width:44px;height:44px;border-radius:11px;display:grid;place-items:center;font-size:21px;flex-shrink:0}.kpi-indigo .kpi-icon{background:#eef2ff}.kpi-green .kpi-icon{background:#ecfdf5}.kpi-amber .kpi-icon{background:#fffbeb}.kpi-pink .kpi-icon{background:#fdf2f8}.kpi-label{font-size:12px;color:var(--text-muted);font-weight:600}.kpi-value{font-size:27px;font-weight:700;line-height:1.1;margin:4px 0;letter-spacing:-.02em}.kpi-sub{font-size:12px;color:var(--text-faint)}.dash-row{display:grid;grid-template-columns:1.6fr 1fr;gap:18px;margin-bottom:22px}.dash-col{display:flex;flex-direction:column;gap:18px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm)}.card-title{margin:0 0 16px;font-size:14px;font-weight:700;color:var(--text)}.chart-caption{font-size:13px;color:var(--text-muted);margin-bottom:14px}.chart-caption strong{color:var(--primary)}.hour-chart{display:flex;align-items:flex-end;gap:3px;height:180px}.hour-col{flex:1;display:flex;flex-direction:column;align-items:center;height:100%}.hour-bar-track{flex:1;width:100%;display:flex;align-items:flex-end;justify-content:center}.hour-bar{width:100%;max-width:16px;min-height:2px;background:#e5e7eb;border-radius:4px 4px 0 0;transition:height .3s ease}.hour-bar.has{background:linear-gradient(180deg,#6366f1,#4f46e5)}.hour-label{font-size:9px;color:var(--text-faint);margin-top:6px;white-space:nowrap}.split-bar{display:flex;height:30px;border-radius:8px;overflow:hidden;background:var(--surface-2)}.split-seg{transition:width .3s ease}.seg-user{background:#4f46e5}.seg-bot{background:#10b981}.split-legend{display:flex;flex-direction:column;gap:8px;margin-top:14px}.legend-item{display:flex;align-items:center;gap:8px;font-size:13px}.dot{width:10px;height:10px;border-radius:3px}.dot-user{background:#4f46e5}.dot-bot{background:#10b981}.legend-item .muted{color:var(--text-faint)}.big-stat{margin-bottom:14px}.big-stat-value{font-size:24px;font-weight:700;color:var(--text)}.big-stat-label{font-size:12px;color:var(--text-faint)}.weekday{display:flex;align-items:flex-end;gap:6px;height:70px}.weekday-col{flex:1;display:flex;flex-direction:column;align-items:center;height:100%}.weekday-track{flex:1;width:100%;display:flex;align-items:flex-end;justify-content:center}.weekday-bar{width:100%;max-width:20px;min-height:2px;background:linear-gradient(180deg,#a5b4fc,#6366f1);border-radius:4px 4px 0 0}.weekday-label{font-size:10px;color:var(--text-faint);margin-top:5px}.empty-mini,.table-empty{padding:30px;text-align:center;color:var(--text-faint);font-size:13px}.table-card .card-body{overflow-x:auto}.table{min-width:640px}.table-head,.table-row{display:grid;grid-template-columns:90px 1fr 100px 130px 70px;align-items:center;gap:12px}.table-head{padding:0 4px 12px;border-bottom:1px solid var(--border);font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-faint);font-weight:600}.table-row{padding:12px 4px;border-bottom:1px solid var(--surface-2);font-size:13px}.table-row:last-child{border-bottom:none}.col-num{text-align:center}.cell-id{font-family:ui-monospace,SF Mono,Menlo,monospace;font-weight:700;color:var(--primary);font-size:12px}.cell-msg{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text);font-weight:500}.cell-time{color:var(--text-muted)}.pill{background:var(--surface-2);border:1px solid var(--border);padding:2px 10px;border-radius:20px;font-size:12px;font-weight:600}.link-btn{border:none;background:transparent;color:var(--primary);font-weight:600;font-size:13px;padding:0}.link-btn:hover{text-decoration:underline}.history{display:grid;grid-template-columns:320px 1fr;height:100%;min-height:0}.session-panel{background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;min-height:0}.history-main{display:flex;flex-direction:column;min-width:0;min-height:0}.search{position:relative;padding:16px 16px 6px}.search input{width:100%;padding:10px 32px 10px 34px;border:1px solid var(--border);border-radius:10px;font-size:13px;background:var(--surface-2);outline:none;transition:border-color .15s,box-shadow .15s}.search input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft);background:#fff}.search-icon{position:absolute;left:26px;top:26px;font-size:13px;opacity:.5}.search-clear{position:absolute;right:26px;top:22px;border:none;background:var(--border);color:var(--text-muted);width:20px;height:20px;border-radius:50%;font-size:15px;line-height:1;display:grid;place-items:center}.session-count{padding:8px 20px 10px;font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--text-faint);font-weight:600}.session-list{overflow-y:auto;flex:1;padding:0 12px 16px;min-height:0}.list-empty{padding:24px 12px;color:var(--text-faint);font-size:13px;text-align:center}.session-item{display:block;width:100%;text-align:left;background:transparent;border:1px solid transparent;border-radius:10px;padding:12px;margin-bottom:4px;transition:background .12s,border-color .12s}.session-item:hover{background:var(--surface-2)}.session-item.active{background:var(--primary-soft);border-color:#c7d2fe}.session-item-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}.session-id{font-size:12px;font-weight:700;color:var(--primary);font-family:ui-monospace,SF Mono,Menlo,monospace}.session-badge{font-size:10px;font-weight:600;color:var(--text-muted);background:var(--surface-2);border:1px solid var(--border);padding:2px 7px;border-radius:20px}.session-item.active .session-badge{background:#fff}.session-preview{font-size:13px;color:var(--text);font-weight:500;line-height:1.35;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.session-time{margin-top:6px;font-size:11px;color:var(--text-faint)}.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:16px 28px;display:flex;align-items:center;justify-content:space-between;gap:24px}.topbar-title h1{margin:0;font-size:19px;font-weight:700;letter-spacing:-.02em}.topbar-title p{margin:3px 0 0;font-size:13px;color:var(--text-muted)}.topbar-right{display:flex;align-items:center;gap:28px}.stat{text-align:right}.stat-value{font-size:22px;font-weight:700;line-height:1;color:var(--text)}.stat-label{font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--text-faint);font-weight:600;margin-top:4px}.topbar-actions{display:flex;align-items:center;gap:14px;padding-left:24px;border-left:1px solid var(--border)}.content{flex:1;overflow-y:auto;min-height:0}.conversation{max-width:900px;margin:0 auto;padding:28px}.conv-header{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;margin-bottom:24px;box-shadow:var(--shadow-sm)}.conv-header h2{margin:0;font-size:18px;font-weight:700}.conv-meta-id{font-size:12px;color:var(--text-faint);font-family:ui-monospace,SF Mono,Menlo,monospace;margin-top:4px}.conv-meta{display:flex;flex-wrap:wrap;gap:28px;margin-top:18px;padding-top:18px;border-top:1px solid var(--border)}.conv-meta-item{display:flex;flex-direction:column;gap:3px}.conv-meta-label{font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-faint);font-weight:600}.conv-meta-value{font-size:14px;font-weight:600;color:var(--text)}.messages{display:flex;flex-direction:column;gap:20px}.msg-row{display:flex;gap:12px;align-items:flex-start}.msg-row.user{flex-direction:row-reverse}.avatar{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:700;flex-shrink:0;color:#fff}.avatar.bot{background:linear-gradient(135deg,var(--primary),#7c73f0)}.avatar.user{background:#374151}.msg{max-width:76%;display:flex;flex-direction:column}.msg-row.user .msg{align-items:flex-end}.msg-role{font-size:11px;font-weight:600;color:var(--text-faint);margin-bottom:5px;text-transform:uppercase;letter-spacing:.04em}.bubble{border-radius:14px;padding:12px 16px;font-size:14px;line-height:1.55;box-shadow:var(--shadow-sm)}.msg-row.assistant .bubble{background:var(--bot-bubble);border:1px solid var(--border);border-top-left-radius:4px;color:var(--text)}.msg-row.user .bubble{background:var(--user-bubble);color:#fff;border-top-right-radius:4px}.bubble p{margin:0 0 8px}.bubble p:last-child{margin-bottom:0}.bubble ul{margin:6px 0;padding-left:20px}.bubble li{margin:3px 0}.bubble strong{font-weight:700}.msg-time{font-size:11px;color:var(--text-faint);margin-top:5px}.center-state{height:100%;min-height:400px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:40px;color:var(--text-muted)}.center-icon{font-size:48px;margin-bottom:16px}.center-title{font-size:18px;font-weight:700;color:var(--text)}.center-subtitle{font-size:14px;color:var(--text-muted);margin-top:8px;max-width:420px}.center-action{margin-top:20px}@media (max-width: 1100px){.kpi-grid{grid-template-columns:repeat(2,1fr)}.dash-row{grid-template-columns:1fr}}@media (max-width: 860px){.shell{grid-template-columns:64px 1fr}.nav-brand-text,.nav-item-label,.nav-user-info{display:none}.nav-item{justify-content:center}.history{grid-template-columns:1fr}.session-panel{display:none}}:root{--bg: #f5f6fa;--surface: #ffffff;--surface-2: #f9fafb;--border: #e5e7eb;--border-strong: #d1d5db;--text: #111827;--text-muted: #6b7280;--text-faint: #9ca3af;--primary: #4f46e5;--primary-dark: #4338ca;--primary-soft: #eef2ff;--user-bubble: #4f46e5;--bot-bubble: #ffffff;--shadow-sm: 0 1px 2px rgba(16, 24, 40, .05);--shadow-md: 0 4px 12px rgba(16, 24, 40, .08);--radius: 12px;--font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:var(--font);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}button{font-family:inherit;cursor:pointer}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:8px;border:2px solid transparent;background-clip:content-box}::-webkit-scrollbar-thumb:hover{background:#b6bcc6;background-clip:content-box}