:root{--font-display:"Eurostile","Bank Gothic","Rajdhani","Avenir Next Condensed",sans-serif;--font-body:"IBM Plex Sans","Segoe UI",sans-serif;--font-mono:"JetBrains Mono","SFMono-Regular","Menlo",monospace;--bg:#030712;--bg-2:#0b1222;--ink:#dbeafe;--ink-soft:#8aa0c2;--panel:rgba(12,22,42,0.82);--line:rgba(80,122,192,0.35);--accent:#22d3ee;--accent-soft:#2dd4bf;--ok:#34d399;--error:#fb7185}*{box-sizing:border-box}body,html{margin:0;padding:0;background:radial-gradient(circle at 12% 8%,rgba(34,211,238,.18),transparent 30%),radial-gradient(circle at 88% 88%,rgba(45,212,191,.14),transparent 32%),linear-gradient(160deg,var(--bg) 0,var(--bg-2) 52%,#04091a 100%);color:var(--ink)}body{min-height:100vh;font-family:var(--font-body);letter-spacing:.01em}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.shell{min-height:100vh;display:grid;grid-template-columns:320px 1fr}.sidebar{border-right:1px solid var(--line);background:linear-gradient(180deg,rgba(7,18,36,.86),rgba(6,15,30,.75));-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:20px;gap:14px}.main,.sidebar{display:flex;flex-direction:column}.main{min-height:100vh}.toolbar{border-bottom:1px solid var(--line);background:rgba(9,18,33,.58);box-shadow:inset 0 -1px 0 rgba(34,211,238,.12);padding:14px 20px;justify-content:space-between;gap:16px}.toolbar,.toolbar-controls{display:flex;align-items:center}.toolbar-controls{gap:12px}.messages{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1 1;overflow-y:auto;max-height:calc(100vh - 170px)}.message{border:1px solid var(--line);border-radius:14px;padding:12px;background:var(--panel);box-shadow:0 10px 30px rgba(0,0,0,.22);max-width:900px;white-space:pre-wrap}.message.user{align-self:flex-end;border-color:rgba(34,211,238,.62);background:linear-gradient(140deg,rgba(10,28,54,.95),rgba(10,45,62,.9))}.message.assistant{align-self:flex-start}.message-title{font-size:12px;color:var(--ink-soft);margin-bottom:8px;text-transform:uppercase;letter-spacing:.12em;font-family:var(--font-mono)}.composer{border-top:1px solid var(--line);padding:14px 20px;display:flex;gap:10px}.composer textarea{flex:1 1;border:1px solid var(--line);border-radius:12px;background:rgba(8,18,35,.85);color:var(--ink);padding:10px;min-height:84px;box-shadow:inset 0 0 0 1px rgba(34,211,238,.06)}.btn{border:1px solid rgba(34,211,238,.45);border-radius:10px;background:rgba(8,19,38,.72);color:var(--ink);padding:8px 12px;cursor:pointer;transition:.18s ease}.btn:hover{transform:translateY(-1px);border-color:rgba(34,211,238,.8);box-shadow:0 0 0 1px rgba(34,211,238,.22),0 6px 20px rgba(34,211,238,.14)}.btn.primary{background:linear-gradient(130deg,#06b6d4,#0ea5e9);color:#02101d;border-color:transparent;font-weight:700}.btn.danger{border-color:var(--error);color:var(--error);background:rgba(59,16,27,.35)}.chat-list{display:flex;flex-direction:column;gap:8px;overflow-y:auto}.chat-item{border:1px solid var(--line);border-radius:10px;padding:10px;background:rgba(8,18,35,.75);cursor:pointer;display:flex;justify-content:space-between;gap:8px}.chat-item.active{border-color:rgba(34,211,238,.9);box-shadow:inset 0 0 0 1px rgba(34,211,238,.35)}.step-card{border:1px dashed var(--line);border-radius:12px;padding:10px;background:rgba(9,23,43,.82)}.step-card.error{border-color:var(--error);background:rgba(61,17,28,.38)}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.login-card{width:min(420px,100%);border:1px solid var(--line);background:rgba(8,19,38,.85);box-shadow:0 30px 80px rgba(0,0,0,.42);border-radius:16px;padding:24px;display:flex;flex-direction:column;gap:14px}.input{border:1px solid var(--line);border-radius:10px;padding:10px;background:rgba(8,18,35,.86);color:var(--ink)}.label{font-size:13px;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.08em;font-family:var(--font-mono)}@media (max-width:980px){.shell{grid-template-columns:1fr}.sidebar{border-right:none;border-bottom:1px solid var(--line);max-height:230px}.messages{max-height:calc(100vh - 390px)}}