:root{
  --bg:#0a0f1d;
  --bg2:#0e1526;
  --card:#121a2e;
  --card2:#16203a;
  --line:#233052;
  --ink:#e8eefc;
  --ink-dim:#9aa8c7;
  --ink-faint:#6b7a9e;
  --accent:#6ea8fe;
  --accent2:#22d3a6;
  --warn:#f0b429;
  --danger:#f2667e;
  --radius:14px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:
    radial-gradient(1100px 600px at 85% -10%, rgba(110,168,254,.10), transparent 60%),
    radial-gradient(900px 500px at 5% 110%, rgba(34,211,166,.08), transparent 60%),
    var(--bg);
  color:var(--ink);
  font-family:"Vazirmatn","IRANSans",system-ui,-apple-system,"Segoe UI",Tahoma,sans-serif;
  -webkit-font-smoothing:antialiased;
}
[d dir="ltr"], code, pre, .mono, input[type=range]{font-family:var(--mono)}
h1,h2,h3{font-weight:700;letter-spacing:-.01em}

/* ---------------- gate ---------------- */
.gate{min-height:100vh;display:grid;place-items:center;padding:24px}
.gate-card{
  width:100%;max-width:420px;background:linear-gradient(180deg,var(--card),var(--bg2));
  border:1px solid var(--line);border-radius:20px;padding:36px 28px;text-align:center;
  box-shadow:0 30px 80px -40px rgba(0,0,0,.9);
}
.gate-logo{font-size:44px;line-height:1}
.gate-card h1{font-size:24px;margin:14px 0 6px}
.gate-sub{color:var(--ink-dim);font-size:14px;line-height:1.9;margin-bottom:22px}
.gate-foot{color:var(--ink-faint);font-size:12px;margin:16px 0 0}
.btn-accent{
  background:linear-gradient(180deg,#7db4ff,#5b93ec);border:1px solid #86baff;color:#08111f;
  font-weight:700;border-radius:10px;
}
.btn-accent:hover{background:linear-gradient(180deg,#8fc0ff,#6ba0f5);color:#08111f}
.btn-accent:disabled{opacity:.55}

/* ---------------- shell ---------------- */
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 22px;border-bottom:1px solid var(--line);
  background:rgba(10,15,29,.82);backdrop-filter:blur(10px);
  position:sticky;top:0;z-index:20;
}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{font-size:26px}
.brand-name{font-weight:800;font-size:16px}
.brand-sub{color:var(--ink-faint);font-size:12px;margin-top:2px}
.topbar-right{display:flex;align-items:center;gap:10px}
.chip{
  background:var(--card2);border:1px solid var(--line);border-radius:999px;
  padding:5px 12px;font-size:12px;color:var(--ink-dim);
}

.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:18px;
  padding:18px 22px 40px;max-width:1400px;margin:0 auto;align-items:start;
}
@media (max-width:1040px){
  .layout{grid-template-columns:1fr;padding:14px}
}

/* ---------------- chat ---------------- */
.chat-col{display:flex;flex-direction:column;min-height:calc(100vh - 130px)}
.thread{flex:1;display:flex;flex-direction:column;gap:16px;overflow-y:auto;padding:4px 2px 12px}
.empty-state{
  margin:auto;text-align:center;max-width:560px;color:var(--ink-dim);
  background:var(--card);border:1px dashed var(--line);border-radius:var(--radius);padding:30px 26px;
}
.empty-state h2{font-size:19px;margin:0 0 8px;color:var(--ink)}
.empty-state p{font-size:13.5px;line-height:1.9;margin:0 0 18px}
.suggestions{display:grid;gap:8px}
.suggestion{
  text-align:right;background:var(--card2);border:1px solid var(--line);color:var(--ink);
  border-radius:10px;padding:11px 14px;font-size:13px;transition:.15s;
}
.suggestion:hover{border-color:var(--accent);background:#1a2542;transform:translateX(-2px)}

.msg{display:flex;gap:10px;align-items:flex-start}
.msg .avatar{
  width:30px;height:30px;border-radius:9px;display:grid;place-items:center;flex:0 0 auto;
  background:var(--card2);border:1px solid var(--line);font-size:15px;
}
.msg-body{min-width:0;flex:1}
.msg-who{font-size:11.5px;color:var(--ink-faint);margin-bottom:5px}
.bubble{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:12px 15px;font-size:14px;line-height:1.95;white-space:pre-wrap;word-break:break-word;
}
.msg.user .bubble{background:#182342;border-color:#2b3c66}
.msg.agent .bubble{background:var(--card)}
.meta-row{display:flex;gap:8px;align-items:center;margin-top:8px;flex-wrap:wrap}
.pill{
  font-size:11px;padding:3px 9px;border-radius:999px;border:1px solid var(--line);
  background:var(--bg2);color:var(--ink-dim);font-family:var(--mono)
}
.pill.ok{color:#8ef0cd;border-color:#1d5b4a}
.pill.bad{color:#ffb3c1;border-color:#5b2431}
.steps-toggle{
  font-size:11.5px;background:none;border:1px solid var(--line);color:var(--accent);
  border-radius:999px;padding:3px 11px;
}
.steps-toggle:hover{background:var(--card2)}
.steps{margin-top:10px;display:none;flex-direction:column;gap:8px}
.steps.open{display:flex}
.step{
  border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--bg2);
}
.step-h{
  display:flex;align-items:center;gap:8px;padding:7px 11px;font-size:12px;
  background:var(--card2);border-bottom:1px solid var(--line);
}
.step-h .n{
  width:19px;height:19px;border-radius:5px;display:grid;place-items:center;
  background:#1d2b4d;color:var(--accent);font-family:var(--mono);font-size:11px
}
.step-h code{color:var(--ink);font-size:12px}
.step-body{padding:9px 11px;font-family:var(--mono);font-size:11.5px;color:var(--ink-dim);
  white-space:pre-wrap;line-height:1.7;max-height:260px;overflow:auto}
.step-label{color:var(--ink-faint);font-size:10.5px;margin-bottom:3px;font-family:inherit}

.composer{
  display:flex;gap:10px;align-items:flex-end;padding-top:12px;border-top:1px solid var(--line);
}
.composer textarea{
  flex:1;background:var(--card);border:1px solid var(--line);color:var(--ink);
  border-radius:12px;padding:11px 14px;font-size:14px;resize:none;line-height:1.7;
}
.composer textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(110,168,254,.15)}
.composer .btn{height:44px;padding:0 22px}
.composer-note{font-size:11.5px;color:var(--ink-faint);min-height:18px;margin-top:8px}

/* ---------------- side ---------------- */
.side-col{display:flex;flex-direction:column;gap:14px;position:sticky;top:82px}
@media (max-width:1040px){.side-col{position:static}}
.card{
  background:linear-gradient(180deg,var(--card),var(--bg2));
  border:1px solid var(--line);border-radius:var(--radius);padding:15px 16px;
}
.card-head{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  font-weight:700;font-size:13px;margin-bottom:12px;color:var(--ink)
}
.muted{color:var(--ink-dim)}
.small{font-size:11.5px}
.kpi-row{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.kpi{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:9px 6px;text-align:center}
.kpi-v{font-family:var(--mono);font-size:14px;color:var(--accent2);font-weight:700}
.kpi-l{font-size:10.5px;color:var(--ink-faint);margin-top:3px}
.mini-table{width:100%;font-size:12.5px;border-collapse:collapse}
.mini-table td{padding:5px 0;color:var(--ink-dim)}
.mini-table td:last-child{text-align:left;font-family:var(--mono);color:var(--ink)}
.budget{margin-top:12px}
.bar{height:6px;background:#0a1020;border:1px solid var(--line);border-radius:999px;margin-top:6px;overflow:hidden}
.bar-fill{height:100%;background:linear-gradient(90deg,var(--accent2),var(--accent));transition:width .4s}
.fine{font-size:11px;color:var(--ink-faint);line-height:1.8;margin:10px 0 0}
.badge-soft{
  font-family:var(--mono);font-size:11px;background:#12312a;color:#7ff0cb;
  border:1px solid #1d5b4a;border-radius:999px;padding:2px 9px;
}
.field{margin-top:10px}
.field label{font-size:11.5px;color:var(--ink-dim);display:block;margin-bottom:2px}
.field label b{color:var(--accent)}
input[type=range]{accent-color:var(--accent);width:100%}
.savings-box{margin-top:14px;display:grid;gap:6px;background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:11px 12px}
.savings-box>div{display:flex;justify-content:space-between;align-items:center;font-size:12.5px}
.savings-box b{font-family:var(--mono)}
.savings-net{border-top:1px solid var(--line);padding-top:7px;margin-top:2px}
.savings-net b{color:var(--accent2);font-size:14px}
.loop{margin:0;padding-inline-start:18px;font-size:12.3px;line-height:1.95;color:var(--ink-dim)}
.loop li{margin-bottom:5px}
.loop b{color:var(--ink)}

/* ---------------- toast ---------------- */
.toast-box{
  position:fixed;bottom:22px;inset-inline-start:22px;z-index:99;max-width:420px;
  background:#2a1620;border:1px solid #5b2431;color:#ffc9d3;border-radius:12px;
  padding:11px 15px;font-size:12.5px;box-shadow:0 18px 40px -20px #000;
}
.typing{display:inline-flex;gap:4px;align-items:center}
.typing i{width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:.4;animation:tp 1.1s infinite}
.typing i:nth-child(2){animation-delay:.18s}
.typing i:nth-child(3){animation-delay:.36s}
@keyframes tp{0%,60%,100%{opacity:.25;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}