:root{--accent: #e82127;--radius: 10px;--bg: #15171c;--panel: #1b1e24;--panel-2: #20242b;--elev: #262a32;--border: #2b2f37;--text: #e6e8ec;--muted: #99a0ad;--ok: #16a34a;--bad: #ef4444;--shadow: 0 1px 2px rgba(0,0,0,.3), 0 12px 30px -16px rgba(0,0,0,.6);--shadow-lg: 0 30px 70px -24px rgba(0,0,0,.7);--canvas: #0f1115}:root[data-theme=light]{--bg: #f4f5f7;--panel: #ffffff;--panel-2: #f1f2f5;--elev: #ffffff;--border: #e3e6eb;--text: #181b20;--muted: #5b626e;--shadow: 0 1px 2px rgba(15,23,42,.06), 0 12px 30px -18px rgba(15,23,42,.25);--shadow-lg: 0 30px 70px -24px rgba(15,23,42,.3);--canvas: #e9ebef}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px;-webkit-font-smoothing:antialiased}button{font-family:inherit;color:inherit}.muted{color:var(--muted)}.small{font-size:12px}.row{display:flex;align-items:center}.gap{gap:8px}.brand{font-size:15px;letter-spacing:-.01em}button{background:var(--panel-2);border:1px solid var(--border);color:var(--text);border-radius:calc(var(--radius) - 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32px);height:520px;max-height:calc(100vh - 40px);background:var(--panel);border:1px solid var(--border);border-radius:calc(var(--radius) + 6px);box-shadow:var(--shadow-lg);display:flex;flex-direction:column;overflow:hidden;z-index:70}.chat-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--border);font-weight:600;background:var(--panel-2)}.chat-body{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px}.chat-msg{max-width:85%;padding:9px 12px;border-radius:12px;font-size:13px;line-height:1.5;white-space:pre-wrap;word-wrap:break-word}.chat-msg.assistant{align-self:flex-start;background:var(--panel-2);border:1px solid var(--border);border-bottom-left-radius:4px}.chat-msg.user{align-self:flex-end;background:var(--accent);color:#fff;border-bottom-right-radius:4px}.chat-msg.typing{color:var(--muted);font-style:italic}.chat-input{display:flex;gap:8px;padding:10px;border-top:1px solid var(--border)}.chat-input input{flex:1}.toaster{position:fixed;bottom:20px;left:50%;transform:translate(-50%);display:flex;flex-direction:column;gap:8px;z-index:90;align-items:center}.toast{background:var(--elev);border:1px solid var(--border);color:var(--text);padding:10px 16px;border-radius:999px;box-shadow:var(--shadow-lg);font-size:13px;cursor:pointer}.toast.ok{border-color:var(--ok)}.toast.err{border-color:var(--bad)}@media (max-width: 1100px){.workspace{grid-template-columns:220px 1fr 320px}}