:root{--w-bg:#fff;--w-fg:#1a1d2b;--w-muted:#66708a;--w-accent:#0d6efd;--w-border:#e3e6f0;--w-bubble-visitor:#0d6efd;--w-bubble-visitor-fg:#fff;--w-bubble-agent:#f5f6fa;--w-bubble-human:#fff7e6;--w-radius:14px;--w-shadow:0 6px 24px rgba(0,0,0,.08)}html,body{color:var(--w-fg);background:var(--w-bg);height:100%;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:14px;line-height:1.5}.chat-shell{background:var(--w-bg);flex-direction:column;height:100vh;display:flex}.chat-header{border-bottom:1px solid var(--w-border);align-items:center;gap:8px;padding:12px 16px;font-weight:600;display:flex}.chat-body{flex:1;padding:12px 16px;overflow-y:auto}.message-list{margin:0;padding:0;list-style:none}.msg{max-width:85%;margin-bottom:12px}.msg--visitor{text-align:right;margin-left:auto}.msg-meta{color:var(--w-muted);margin-bottom:4px;font-size:12px}.msg-body{border-radius:var(--w-radius);text-align:left;padding:10px 12px;display:inline-block}.msg--visitor .msg-body{background:var(--w-bubble-visitor);color:var(--w-bubble-visitor-fg)}.msg--agent .msg-body{background:var(--w-bubble-agent)}.msg--human .msg-body{background:var(--w-bubble-human);border:1px solid #ffe1a8}.msg-body p{margin:0 0 8px}.msg-body p:last-child{margin-bottom:0}.citations{margin-top:8px;padding-left:0;font-size:12px;list-style:none}.citation{margin-bottom:4px}.citation-link{color:var(--w-accent);align-items:baseline;gap:6px;text-decoration:none;display:inline-flex}.citation-link:hover{text-decoration:underline}.citation-rank{min-width:16px;font-weight:600}.citation-timestamp{color:var(--w-muted);font-variant-numeric:tabular-nums}.composer{border-top:1px solid var(--w-border);background:var(--w-bg);gap:8px;padding:12px 16px;display:flex}.composer-input{resize:none;border:1px solid var(--w-border);font:inherit;color:inherit;border-radius:10px;flex:1;padding:8px 10px}.composer-input:focus{outline:2px solid var(--w-accent);outline-offset:-2px}.composer-send{background:var(--w-accent);color:#fff;cursor:pointer;border:0;border-radius:10px;padding:8px 16px;font-weight:600}.composer-send:disabled{opacity:.5;cursor:not-allowed}.status-indicator{color:var(--w-muted);padding:4px 16px 8px;font-size:12px}.status-indicator .dot{background:var(--w-accent);border-radius:50%;width:6px;height:6px;margin-right:6px;animation:1.4s infinite w-pulse;display:inline-block}@keyframes w-pulse{0%,to{opacity:.4}50%{opacity:1}}.notice{background:#fff7e6;border:1px solid #ffe1a8;border-radius:10px;margin:8px 16px;padding:8px 12px;font-size:13px}.notice--rate-limit{background:#fce8e6;border-color:#f5a39d}.escalation-control{border:1px solid var(--w-accent);color:var(--w-accent);cursor:pointer;background:0 0;border-radius:8px;margin-top:6px;padding:6px 10px;font-size:13px}.email-prompt{gap:6px;margin-top:6px;display:flex}.email-prompt input{border:1px solid var(--w-border);border-radius:8px;flex:1;padding:6px 8px}@media (max-width:640px){.chat-shell{height:100vh}.chat-header,.chat-body{padding:10px 12px}.composer{padding:8px 12px}.msg{max-width:92%}}.composer-send:focus-visible{outline:2px solid var(--w-accent);outline-offset:2px}.composer-input:focus-visible{outline:2px solid var(--w-accent);outline-offset:2px}.escalation-control:focus-visible{outline:2px solid var(--w-accent);outline-offset:2px}.email-prompt button:focus-visible{outline:2px solid var(--w-accent);outline-offset:2px}.email-prompt input:focus-visible{outline:2px solid var(--w-accent);outline-offset:2px}.citation-link:focus-visible{outline:2px solid var(--w-accent);outline-offset:2px}