:root{color-scheme:dark;--bg:#070711;--panel:#111328;--soft:#1b1f3d;--text:#eef1ff;--muted:#a7add1;--accent:#7c5cff;--ok:#38d996;--err:#ff657a}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;background:radial-gradient(circle at top left,#252057,var(--bg) 42%);color:var(--text)}.app{display:grid;grid-template-columns:320px 1fr;min-height:100vh}aside{padding:28px;background:rgba(17,19,40,.78);border-right:1px solid #2a2e54}h1{margin-top:0}.budget{display:grid;gap:8px;padding:16px;background:var(--soft);border-radius:16px;margin:22px 0}.budget span,small,p{color:var(--muted)}main{display:grid;grid-template-rows:1fr auto;max-height:100vh}#chat{overflow:auto;padding:28px;display:flex;flex-direction:column;gap:14px}.msg{max-width:780px;padding:16px 18px;border-radius:18px;background:var(--panel);box-shadow:0 10px 30px rgba(0,0,0,.2)}.msg.user{align-self:flex-end;background:#253063}.msg.assistant{align-self:flex-start;border:1px solid #353a6f}#composer{display:grid;grid-template-columns:auto 1fr auto;gap:12px;padding:18px;border-top:1px solid #2a2e54;background:rgba(7,7,17,.88)}textarea,input{width:100%;border:1px solid #34395f;border-radius:14px;padding:13px 14px;background:#0b0d1b;color:var(--text)}textarea{min-height:58px;resize:vertical}button{border:0;border-radius:14px;padding:12px 16px;background:var(--accent);color:white;font-weight:700;cursor:pointer}.login{display:grid;place-items:center;min-height:100vh}.card{width:min(420px,92vw);padding:28px;border:1px solid #34395f;border-radius:24px;background:rgba(17,19,40,.9)}label{display:block;margin:14px 0}.err{color:var(--err)}@media(max-width:800px){.app{grid-template-columns:1fr}aside{border-right:0;border-bottom:1px solid #2a2e54}main{max-height:none}}