:root{
  --bg:#0f0d17;--panel:#181526;--panel2:#1f1b31;--line:#2c2745;--txt:#ecebf5;--muted:#9a95b8;
  --brand:#8b5cf6;--brand2:#ec4899;--ok:#22c55e;--warn:#f59e0b;--bad:#ef4444;--blue:#38bdf8;
  --radius:12px;
}
@media (prefers-color-scheme: light){
  :root{--bg:#f4f3fa;--panel:#fff;--panel2:#f0eef9;--line:#e0dcf0;--txt:#1d1a2f;--muted:#6f6a8c}
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{background:var(--bg);color:var(--txt);font:14px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:inherit;text-decoration:none}
h1,h2,h3{margin:0 0 .5em}
h1{font-size:22px}h2{font-size:17px}h3{font-size:14px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.muted{color:var(--muted)}.small{font-size:12px}.right{text-align:right}.mt{margin-top:16px}.grow{flex:1}
.shell{display:flex;height:100vh}
.side{width:210px;flex:none;background:var(--panel);border-right:1px solid var(--line);padding:14px 10px;display:flex;flex-direction:column;gap:2px;overflow:auto}
.brand{font-size:18px;padding:6px 10px 16px;display:flex;gap:8px;align-items:center}
.brand b{color:var(--brand)}
.nav{display:flex;gap:10px;align-items:center;padding:9px 10px;border-radius:9px;color:var(--muted)}
.nav i{font-style:normal;width:20px;text-align:center}
.nav:hover{background:var(--panel2);color:var(--txt)}
.nav.on{background:linear-gradient(90deg,rgba(139,92,246,.25),rgba(236,72,153,.12));color:var(--txt);font-weight:600}
.nav.out{margin-top:auto}
.main{flex:1;overflow:auto;padding:22px 26px;min-width:0}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.grid{display:grid;gap:14px}
.g4{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
.g2{grid-template-columns:repeat(auto-fit,minmax(340px,1fr))}
.kpi .v{font-size:26px;font-weight:700;margin-top:4px}
.kpi .l{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.05em}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.between{justify-content:space-between}
.btn{border:1px solid var(--line);background:var(--panel2);color:var(--txt);padding:7px 13px;border-radius:9px;cursor:pointer;font:inherit}
.btn:hover{border-color:var(--brand)}
.btn.primary{background:linear-gradient(90deg,var(--brand),var(--brand2));border:0;color:#fff;font-weight:600}
.btn.danger{color:var(--bad)}
.btn.sm{padding:4px 9px;font-size:12px}
.btn:disabled{opacity:.5;cursor:default}
input,select,textarea{width:100%;background:var(--panel2);color:var(--txt);border:1px solid var(--line);border-radius:9px;padding:8px 10px;font:inherit}
textarea{resize:vertical;min-height:70px}
input:focus,select:focus,textarea:focus{outline:2px solid rgba(139,92,246,.5);border-color:var(--brand)}
label{display:block;color:var(--muted);font-size:12px;margin-bottom:10px}
label>input,label>select,label>textarea{margin-top:4px;color:var(--txt);font-size:14px}
label.chk{display:flex;gap:8px;align-items:center}label.chk input{width:auto;margin:0}
table{width:100%;border-collapse:collapse}
th{text-align:left;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.04em;padding:8px;border-bottom:1px solid var(--line)}
td{padding:9px 8px;border-bottom:1px solid var(--line);vertical-align:top}
.tag{display:inline-block;padding:2px 8px;border-radius:99px;font-size:11px;background:rgba(139,92,246,.18);color:#c4b5fd;margin:0 4px 4px 0;white-space:nowrap}
.pill{display:inline-block;padding:2px 9px;border-radius:99px;font-size:11px;font-weight:600}
.pill.ok{background:rgba(34,197,94,.16);color:var(--ok)}.pill.warn{background:rgba(245,158,11,.16);color:var(--warn)}
.pill.bad{background:rgba(239,68,68,.16);color:var(--bad)}.pill.blue{background:rgba(56,189,248,.16);color:var(--blue)}
.alert{background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.4);color:#fca5a5;padding:9px 12px;border-radius:9px;margin-bottom:12px}
.note{background:rgba(245,158,11,.10);border:1px solid rgba(245,158,11,.35);padding:9px 12px;border-radius:9px;margin-bottom:12px;color:var(--txt)}
.bars{display:flex;align-items:flex-end;gap:6px;height:130px}
.bars .b{flex:1;background:linear-gradient(180deg,var(--brand),var(--brand2));border-radius:5px 5px 0 0;min-height:2px;position:relative}
.bars .b span{position:absolute;bottom:100%;left:50%;transform:translateX(-50%);font-size:10px;color:var(--muted);white-space:nowrap}
.bars-x{display:flex;gap:6px;color:var(--muted);font-size:10px}.bars-x div{flex:1;text-align:center}
.funnel .f{margin-bottom:9px}.funnel .bar{height:22px;border-radius:6px;background:linear-gradient(90deg,var(--brand),var(--brand2));min-width:3px}
/* login */
.login-body{display:grid;place-items:center;min-height:100vh}
.login{width:340px;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:28px}
.login .logo{font-size:36px}.login h1 b{color:var(--brand)}
.login .btn{width:100%;margin-top:6px;padding:10px}
/* toast */
#toast{position:fixed;right:18px;bottom:18px;display:flex;flex-direction:column;gap:8px;z-index:99}
#toast div{background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--brand);padding:10px 14px;border-radius:9px;box-shadow:0 8px 24px rgba(0,0,0,.35);max-width:340px}
#toast div.err{border-left-color:var(--bad)}
/* inbox */
.inbox{display:grid;grid-template-columns:320px 1fr 290px;gap:0;height:calc(100vh - 44px);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--panel)}
.inbox>div{min-height:0;display:flex;flex-direction:column}
.list{border-right:1px solid var(--line)}
.list .items{overflow:auto;flex:1}
.ct{padding:10px 12px;border-bottom:1px solid var(--line);cursor:pointer;display:flex;gap:10px}
.ct:hover,.ct.on{background:var(--panel2)}
.avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2));display:grid;place-items:center;font-weight:700;color:#fff;flex:none}
.ct .nm{font-weight:600;display:flex;justify-content:space-between;gap:6px}
.ct .pv{color:var(--muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:200px}
.badge{background:var(--brand2);color:#fff;border-radius:99px;font-size:11px;padding:1px 7px}
.chat{min-width:0}
.chat .msgs{flex:1;overflow:auto;padding:16px;display:flex;flex-direction:column;gap:6px;background:var(--bg)}
.m{max-width:72%;padding:8px 11px;border-radius:12px;word-break:break-word;font-size:14px;flex:none}
.m .body{white-space:pre-wrap}
.m.in{background:var(--panel2);align-self:flex-start;border-top-left-radius:3px}
.m.out{background:rgba(139,92,246,.30);align-self:flex-end;border-top-right-radius:3px}
.m.out.ai{background:rgba(56,189,248,.22)}.m.out.human{background:rgba(34,197,94,.22)}
.m .meta{font-size:10px;color:var(--muted);margin-top:3px;text-align:right}
.m.note{align-self:center;background:transparent;color:var(--muted);font-size:12px;border:1px dashed var(--line)}
.m.failed{outline:1px solid var(--bad)}
.m audio,.m video,.m img{max-width:100%;border-radius:8px}
.composer{padding:10px;border-top:1px solid var(--line);display:flex;gap:8px}
.composer textarea{min-height:42px;height:42px}
.details{border-left:1px solid var(--line);padding:14px;overflow:auto}
.head{padding:11px 14px;border-bottom:1px solid var(--line);display:flex;gap:10px;align-items:center;flex-wrap:wrap}
@media (max-width:1000px){.inbox{grid-template-columns:280px 1fr}.details{display:none}}
@media (max-width:720px){.side{width:60px}.side .nav span,.brand span{display:none}.main{padding:14px}.inbox{grid-template-columns:1fr}.list.hide{display:none}}
/* flow editor */
.editor{display:grid;grid-template-columns:1fr 340px;height:calc(100vh - 44px);gap:12px}
.canvas-wrap{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:
  radial-gradient(circle,var(--line) 1px,transparent 1px) 0 0/22px 22px,var(--bg);cursor:grab}
.canvas-wrap.panning{cursor:grabbing}
#canvas{position:absolute;left:0;top:0;transform-origin:0 0}
#edges{position:absolute;left:0;top:0;overflow:visible;pointer-events:none;width:1px;height:1px}
#edges path{fill:none;stroke:#7c7aa8;stroke-width:2}
#edges path.hl{stroke:var(--brand2);stroke-width:3}
.node{position:absolute;width:250px;background:var(--panel);border:1.5px solid var(--line);border-radius:12px;box-shadow:0 6px 18px rgba(0,0,0,.28);user-select:none}
.node.sel{border-color:var(--brand);box-shadow:0 0 0 3px rgba(139,92,246,.3)}
.node .nh{padding:7px 10px;font-weight:600;border-radius:11px 11px 0 0;display:flex;gap:8px;align-items:center;cursor:move;font-size:13px}
.node .nb{padding:8px 10px;font-size:12px;color:var(--muted);max-height:96px;overflow:hidden;white-space:pre-wrap;word-break:break-word}
.node .ports{border-top:1px solid var(--line);padding:2px 0}
.node .port{position:relative;padding:4px 22px 4px 10px;font-size:12px;text-align:right;color:var(--muted)}
.node .port .dot{position:absolute;right:-7px;top:50%;margin-top:-6px;width:12px;height:12px;border-radius:50%;background:var(--brand);border:2px solid var(--panel);cursor:crosshair}
.node .port .dot:hover{background:var(--brand2);transform:scale(1.3)}
.node .inp{position:absolute;left:-8px;top:14px;width:14px;height:14px;border-radius:50%;background:var(--panel2);border:2px solid var(--muted)}
.t-start .nh{background:rgba(34,197,94,.22)}.t-content .nh{background:rgba(139,92,246,.25)}.t-menu .nh{background:rgba(236,72,153,.25)}
.t-question .nh{background:rgba(236,72,153,.18)}.t-action .nh{background:rgba(245,158,11,.22)}.t-condition .nh{background:rgba(56,189,248,.22)}
.t-randomizer .nh{background:rgba(56,189,248,.16)}.t-wait .nh{background:rgba(148,163,184,.22)}.t-flow .nh{background:rgba(52,211,153,.2)}
.t-ai_agent .nh{background:linear-gradient(90deg,rgba(56,189,248,.3),rgba(139,92,246,.3))}.t-end .nh{background:rgba(239,68,68,.2)}
.toolbar{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}
.toolbar .btn{background:var(--panel)}
.editor{grid-template-rows:auto}
.editor .left{display:flex;flex-direction:column;min-height:0}
.editor .left .canvas-wrap{flex:1}
.panel{overflow:auto}
.item{border:1px solid var(--line);border-radius:10px;padding:9px;margin-bottom:8px;background:var(--panel2)}