:root{--header: #075e54;--accent: #25d366;--bg-chat: #e5ddd5;--bubble-bot: #ffffff;--bubble-user: #d9fdd3;--dark: #0f1b2d;--muted: #7c828c}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:#f4f5f7;display:flex;justify-content:center;min-height:100vh}#app{width:100%;max-width:460px;padding:16px;display:flex;flex-direction:column;gap:12px}.phone{display:flex;flex-direction:column;height:min(820px,calc(100vh - 80px));border-radius:14px;overflow:hidden;box-shadow:0 8px 32px #0f1b2d2e;background:var(--bg-chat)}.chat-header{display:flex;align-items:center;gap:10px;background:var(--header);color:#fff;padding:10px 14px}.avatar{width:38px;height:38px;border-radius:50%;background:var(--accent);color:var(--dark);font-weight:700;display:flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0}.head-info{flex:1;min-width:0}.head-name{font-weight:600;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.head-status{font-size:12px;opacity:.85}.vertical-switch{display:flex;gap:8px}.vertical-switch a{color:#fff;font-size:11px;text-decoration:none;border:1px solid rgba(255,255,255,.5);border-radius:999px;padding:3px 8px;white-space:nowrap}.vertical-switch a:hover{background:#ffffff26}.hint{display:flex;align-items:center;justify-content:space-between;gap:8px;background:#fff8e6;color:#92710a;font-size:12px;padding:8px 12px;border-bottom:1px solid #f0d080}.hint button{border:none;background:none;color:#92710a;font-size:11px;text-decoration:underline;cursor:pointer;flex-shrink:0}.chat-body{flex:1;overflow-y:auto;padding:16px 12px;display:flex;flex-direction:column;gap:6px;background-image:radial-gradient(rgba(15,27,45,.04) 1px,transparent 1px);background-size:22px 22px}.bubble{max-width:82%;padding:8px 10px 6px;border-radius:10px;font-size:14px;line-height:1.45;box-shadow:0 1px 1px #0f1b2d1f;display:inline-block;white-space:pre-wrap;word-wrap:break-word}.bubble.bot{background:var(--bubble-bot);align-self:flex-start;border-top-left-radius:2px}.bubble.user{background:var(--bubble-user);align-self:flex-end;border-top-right-radius:2px}.bubble .meta{display:block;font-size:10px;color:var(--muted);text-align:right;margin-top:3px}.bubble .checks{color:#53bdeb;margin-left:4px;letter-spacing:-2px}.bubble.document{display:flex;align-items:center;gap:8px}.doc-icon{background:#dc2626;color:#fff;font-size:10px;font-weight:700;border-radius:4px;padding:6px 5px;flex-shrink:0}.bubble.document a{color:var(--dark);font-size:13px;word-break:break-all}.menu{display:flex;flex-direction:column;gap:4px;align-self:flex-start;max-width:82%;margin:2px 0 4px}.menu-option{background:#fff;border:1px solid var(--accent);color:var(--header);border-radius:18px;padding:7px 14px;font-size:13px;text-align:left;cursor:pointer;transition:background .15s}.menu-option:hover:not(:disabled){background:#eafff1}.menu-option:disabled{opacity:.45;cursor:default}.chat-input{display:flex;gap:8px;padding:8px 10px;background:#f0f2f5}.chat-input input{flex:1;border:none;border-radius:20px;padding:10px 14px;font-size:14px;outline:none}.chat-input button{background:var(--header);color:#fff;border:none;border-radius:20px;padding:0 18px;font-size:14px;cursor:pointer}.chat-input button:hover{background:var(--accent);color:var(--dark)}.disclaimer{font-size:11px;color:var(--muted);text-align:center;line-height:1.5}