:root{
  --bg:#0e1120; --panel:#161a2d; --panel2:#1c2138; --line:#2a3050;
  --text:#e9ebf8; --muted:#8c93b8;
  --g1:#3fd0c9; --g2:#ff9e6b; --user:#a58bff; --bad:#ff6b7d; --ok:#5fe3a1;
  --head:'Bricolage Grotesque',system-ui,sans-serif; --body:'Instrument Sans',system-ui,sans-serif;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:radial-gradient(1200px 600px at 15% -10%,#1b2142 0,transparent 60%),radial-gradient(900px 500px at 100% 110%,#2a1d2e 0,transparent 55%),var(--bg);
  color:var(--text);font-family:var(--body);display:flex;flex-direction:column;min-height:100vh}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--user);outline-offset:2px}

.top{display:flex;justify-content:space-between;align-items:center;padding:14px 22px;border-bottom:1px solid var(--line)}
.brand h1{font-family:var(--head);font-weight:800;font-size:1.6rem;letter-spacing:.04em;margin:0;
  background:linear-gradient(90deg,var(--g1) 0 48%,var(--g2) 52% 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.brand p{margin:0;color:var(--muted);font-size:.85rem}
.top-right{display:flex;gap:10px;align-items:center}
.pill{padding:5px 12px;border-radius:99px;background:var(--panel2);border:1px solid var(--line);font-size:.82rem;color:var(--muted)}
.pill.running{color:var(--ok);border-color:var(--ok)} .pill.paused{color:var(--g2);border-color:var(--g2)} .pill.ended{color:var(--bad);border-color:var(--bad)}

.stage{flex:1;display:grid;grid-template-columns:230px minmax(0,1fr) 230px;gap:18px;padding:18px 22px;min-height:0}
.profile{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:20px 16px;text-align:center;align-self:start;position:relative}
.profile.p1{border-top:3px solid var(--g1)} .profile.p2{border-top:3px solid var(--g2)}
.profile.talking{box-shadow:0 0 0 1px var(--c),0 0 28px -6px var(--c)}
.p1{--c:var(--g1)} .p2{--c:var(--g2)}
.avatar{width:84px;height:84px;border-radius:50%;margin:0 auto 12px;display:grid;place-items:center;font:800 2rem var(--head);color:#0e1120;background:var(--c)}
.profile h2{font-family:var(--head);margin:0;font-size:1.25rem}
.model{margin:2px 0 8px;color:var(--muted);font-size:.8rem}
.persona{font-size:.85rem;color:#c3c8e6;line-height:1.4;margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.meta{margin:4px 0;font-size:.82rem;color:var(--muted);display:flex;gap:6px;justify-content:center;align-items:center}
.dot{width:8px;height:8px;border-radius:50%;background:var(--bad)} .dot.on{background:var(--ok)}
.typing{display:flex;gap:5px;justify-content:center;margin:12px 0 0}
.typing[hidden]{display:none}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--c);animation:bounce 1s infinite}
.typing i:nth-child(2){animation-delay:.15s} .typing i:nth-child(3){animation-delay:.3s}
@keyframes bounce{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-6px);opacity:1}}

.chat{background:var(--panel);border:1px solid var(--line);border-radius:18px;display:flex;flex-direction:column;min-height:0;height:calc(100vh - 130px)}
.chat-head{display:flex;justify-content:space-between;padding:10px 18px;border-bottom:1px solid var(--line);color:var(--muted);font-size:.82rem}
.log{flex:1;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:12px;scroll-behavior:smooth}
.empty{margin:auto;color:var(--muted);text-align:center;max-width:32ch}
.msg{max-width:78%;padding:10px 14px;border-radius:16px;line-height:1.5;animation:pop .28s ease-out;white-space:pre-wrap;overflow-wrap:anywhere}
.msg .who{display:block;font-size:.75rem;font-weight:600;margin-bottom:3px;opacity:.85}
.msg time{display:block;font-size:.68rem;opacity:.5;margin-top:4px}
.msg.g1{align-self:flex-start;background:#123a3d;border:1px solid #1f6a6b;border-bottom-left-radius:4px} .msg.g1 .who{color:var(--g1)}
.msg.g2{align-self:flex-end;background:#40261c;border:1px solid #8a4a2e;border-bottom-right-radius:4px} .msg.g2 .who{color:var(--g2)}
.msg.user{align-self:center;background:#2a2450;border:1px solid #4d41a0;max-width:70%;text-align:center} .msg.user .who{color:var(--user)}
@keyframes pop{from{opacity:0;transform:translateY(10px) scale(.97)}to{opacity:1;transform:none}}

.errorbar{margin:0 18px 8px;padding:10px 14px;border-radius:12px;background:#3a1620;border:1px solid var(--bad);color:#ffc9d1;font-size:.88rem}
.errorbar[hidden]{display:none}
.controls{display:flex;flex-wrap:wrap;gap:8px;padding:12px 18px;border-top:1px solid var(--line)}
.send{display:flex;gap:8px;padding:0 18px 16px}
.send input{flex:1;min-width:0}

.btn{border:1px solid var(--line);background:var(--panel2);padding:9px 14px;border-radius:10px;cursor:pointer;font-weight:600;font-size:.8rem;transition:background .15s,border-color .15s}
.btn:hover:not(:disabled){border-color:var(--muted);background:#232a47}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn.primary{background:var(--g1);color:#07201f;border-color:var(--g1)} .btn.primary:hover:not(:disabled){background:#62e0da}
.btn.accent{background:var(--user);color:#150f33;border-color:var(--user)} .btn.accent:hover:not(:disabled){background:#bba8ff}
.btn.danger{color:var(--bad);border-color:#5a2a37}
.btn.ghost{background:transparent}
.btn.small{padding:7px 10px}

input,select,textarea{width:100%;background:#10142a;border:1px solid var(--line);border-radius:10px;padding:10px 12px}
textarea{resize:vertical}

.drawer{position:fixed;inset:0;background:rgba(5,7,16,.7);display:flex;justify-content:flex-end;z-index:10}
.drawer[hidden]{display:none}
.sheet{width:min(860px,100%);background:var(--panel);height:100%;overflow-y:auto;padding:22px;border-left:1px solid var(--line);animation:slide .25s ease-out}
@keyframes slide{from{transform:translateX(40px);opacity:0}to{transform:none;opacity:1}}
.sheet-head{display:flex;justify-content:space-between;align-items:center}
.sheet-head h2{font-family:var(--head);margin:0}
.note{color:var(--muted);font-size:.85rem}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.col{border:1px solid var(--line);border-radius:14px;padding:14px;margin:0;display:grid;gap:12px;min-width:0}
.col legend{font-family:var(--head);font-weight:800;padding:0 8px}
.c1 legend{color:var(--g1)} .c2 legend{color:var(--g2)}
.col label{display:grid;gap:6px;font-size:.85rem;color:var(--muted)}
.row{display:flex;gap:6px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}

@media (max-width:900px){
  .stage{grid-template-columns:1fr 1fr;padding:12px}
  .chat{grid-column:1 / -1;grid-row:2;height:70vh}
  .profile{padding:14px 10px}
  .persona{display:none}
  .avatar{width:56px;height:56px;font-size:1.4rem}
  .cols,.grid3{grid-template-columns:1fr}
  .msg{max-width:90%}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;scroll-behavior:auto!important}}