:root{font-family:Inter,system-ui,sans-serif;color:#f7f7fb;background:#101321}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at top,#38406d,#101321 55%);display:grid;place-items:center;padding:18px}.shell{width:min(100%,760px)}.card{background:#171b2e;border:1px solid #3a4170;border-radius:22px;box-shadow:0 18px 60px #0006;padding:24px}.auth-card{max-width:440px;margin:auto}.eyebrow{margin:0 0 4px;text-transform:uppercase;letter-spacing:.12em;font-size:.75rem;font-weight:800;color:#aab6ff}h1{font-size:clamp(1.5rem,5vw,2.1rem);margin:0 0 8px}.subtle,.notice{color:#b8bdd7}.notice{min-height:1.3em;font-size:.9rem}form{display:grid;gap:14px;margin-top:22px}label{display:grid;gap:6px;font-size:.9rem;font-weight:700}input{background:#0e1120;border:1px solid #4a5288;border-radius:10px;color:#fff;font:inherit;padding:12px}button{background:#8594ff;border:0;border-radius:10px;color:#101321;cursor:pointer;font:inherit;font-weight:800;padding:12px 16px}button:hover{filter:brightness(1.08)}.text-button{background:transparent;color:#bac4ff;padding:10px 0;text-decoration:underline}.chat-card{min-height:75vh;display:grid;grid-template-rows:auto 1fr auto}.chat-header{border-bottom:1px solid #353c65;display:flex;justify-content:space-between;gap:12px;padding-bottom:16px}.chat-header h1{font-size:1.3rem}.account{text-align:right;font-size:.9rem;color:#c7cbe1}.account .text-button{display:block;margin-left:auto}.messages{overflow-y:auto;min-height:350px;padding:18px 0;display:flex;flex-direction:column;gap:14px}.message{display:grid;gap:3px}.message-meta{color:#aab1d1;font-size:.78rem}.message-body{overflow-wrap:anywhere}.system{align-self:center;text-align:center;color:#aab6ff;font-size:.85rem}.composer{grid-template-columns:1fr auto;margin:0}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@media(max-width:520px){.card{padding:18px;border-radius:16px}.chat-card{min-height:calc(100vh - 36px)}.composer button{padding:12px}.chat-header{align-items:start}}