:root{--background:#f4f6f8;--foreground:#17202a;--muted:#637083;--border:#dbe1e8;--panel:#fff;--accent:#0969da;--accent-dark:#0758b5;--assistant:#f0f3f7;--customer:#0969da;--danger:#b42318}*{box-sizing:border-box}body{background:var(--background);color:var(--foreground);margin:0;font-family:Arial,Helvetica,sans-serif}button,textarea{font:inherit}button{cursor:pointer}button:disabled,textarea:disabled{cursor:not-allowed;opacity:.6}.test-shell{width:min(1440px,100%);margin:0 auto;padding:32px}.test-header{justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:24px;display:flex}.test-header h1{letter-spacing:-.035em;margin:4px 0;font-size:clamp(1.75rem,3vw,2.5rem)}.test-header p,.section-heading p,.brief-heading p{color:var(--muted);margin:0}.eyebrow{letter-spacing:.12em;text-transform:uppercase;font-size:.75rem;font-weight:700;color:var(--accent)!important}.test-grid{grid-template-columns:minmax(0,1.35fr) minmax(340px,.65fr);align-items:start;gap:24px;display:grid}.chat-card,.brief-card{border:1px solid var(--border);background:var(--panel);border-radius:14px;overflow:hidden;box-shadow:0 8px 28px #0f172a0f}.section-heading{border-bottom:1px solid var(--border);align-items:center;gap:12px;padding:18px 20px;display:flex}.section-heading h2,.brief-heading h2{margin:0 0 3px;font-size:1rem}.section-heading p,.brief-heading p{font-size:.8rem}.avatar{color:#0758b5;background:#dcecff;border-radius:50%;flex:none;place-items:center;width:38px;height:38px;font-weight:800;display:grid}.messages{background:#fafbfc;height:min(58vh,620px);min-height:390px;padding:22px 20px;overflow-y:auto}.message-row{margin-bottom:16px;display:flex}.message-row.user{justify-content:flex-end}.message-bubble{background:var(--assistant);border-radius:12px;max-width:min(78%,620px);padding:11px 14px}.message-row.user .message-bubble{background:var(--customer);color:#fff}.message-bubble span{color:var(--muted);margin-bottom:5px;font-size:.72rem;font-weight:700;display:block}.message-row.user .message-bubble span{color:#dcecff}.message-bubble p{white-space:pre-wrap;margin:0;line-height:1.5}.loading-bubble p{color:var(--muted)}.composer{border-top:1px solid var(--border);padding:18px 20px 20px}.composer label{margin-bottom:7px;font-size:.8rem;font-weight:700;display:block}.composer textarea{resize:vertical;width:100%;color:var(--foreground);background:#fff;border:1px solid #b9c3cf;border-radius:9px;outline:none;padding:11px 12px;line-height:1.45}.composer textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px #0969da24}.composer-footer{justify-content:space-between;align-items:center;gap:16px;margin-top:10px;display:flex}.composer-footer p{color:var(--muted);margin:0;font-size:.74rem}.composer-footer button,.secondary-button{border:0;border-radius:8px;padding:9px 16px;font-weight:700}.composer-footer button{background:var(--accent);color:#fff}.composer-footer button:hover:not(:disabled){background:var(--accent-dark)}.secondary-button{color:var(--foreground);background:#fff;border:1px solid #b9c3cf}.secondary-button:hover{background:#f7f8fa}.error-message{color:var(--danger);background:#fff0ed;border-radius:8px;margin-top:12px;padding:10px 12px;font-size:.85rem}.internal-label{color:#6b4f00;letter-spacing:.06em;text-align:center;background:#fff4cc;padding:10px 18px;font-size:.72rem;font-weight:800}.brief-heading{border-bottom:1px solid var(--border);justify-content:space-between;align-items:flex-start;gap:14px;padding:18px;display:flex}.lead-badge{border-radius:999px;flex:none;padding:6px 9px;font-size:.72rem;font-weight:800}.lead-badge.ready{color:#16723a;background:#dff8e8}.lead-badge.not-ready{color:#526071;background:#eef1f4}.brief-summary{background:#f5f8fb;border-radius:9px;margin:18px;padding:14px}.brief-summary h3{text-transform:uppercase;letter-spacing:.05em;margin:0 0 7px;font-size:.78rem}.brief-summary p{color:#394657;margin:0;font-size:.9rem;line-height:1.5}.state-list{margin:0;padding:0 18px 18px}.state-list div{border-top:1px solid #edf0f3;grid-template-columns:130px minmax(0,1fr);gap:12px;padding:10px 0;display:grid}.state-list dt{color:var(--muted);font-size:.78rem;font-weight:700}.state-list dd{overflow-wrap:anywhere;min-width:0;margin:0;font-size:.84rem;line-height:1.4}@media (max-width:900px){.test-grid{grid-template-columns:1fr}.brief-card{order:-1}}@media (max-width:600px){.test-shell{padding:16px}.test-header,.brief-heading{flex-direction:column;align-items:stretch}.secondary-button{width:100%}.messages{height:52vh;min-height:330px}.message-bubble{max-width:90%}.composer-footer{flex-direction:column;align-items:stretch}.composer-footer button{width:100%}.state-list div{grid-template-columns:1fr;gap:4px}}