:root{--sfm-blue:#002e6d;--sfm-green:#61a60e;--sfm-blue-soft:#e9f0fa;--sfm-green-soft:#eef7e7;--text-main:#14213d;--text-muted:#65758b;--border:#d9e2ef;--surface:#fff;--background:#f4f7fb;--danger:#b42318;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{background:radial-gradient(circle at top left, #61a60e29, transparent 35%), radial-gradient(circle at top right, #002e6d29, transparent 35%), var(--background);color:var(--text-main);margin:0}button,input{font:inherit}button{cursor:pointer}.app-shell{justify-content:center;align-items:center;min-height:100vh;padding:32px 16px;display:flex}.chat-card{border:1px solid var(--border);background:#fffffff0;border-radius:28px;flex-direction:column;width:min(980px,100%);height:min(860px,100vh - 64px);display:flex;overflow:hidden;box-shadow:0 24px 80px #002e6d2e}.chat-header{border-bottom:1px solid var(--border);background:linear-gradient(135deg,#fff 0%,#f3f8ee 100%);justify-content:space-between;align-items:center;gap:16px;padding:24px 28px;display:flex}.brand{align-items:center;gap:25px;display:flex}.brand-logo{width:auto;height:62px;display:block}.brand h1{color:var(--sfm-blue);margin:0;font-size:1.65rem;line-height:1.1}.brand p{color:var(--text-muted);margin:5px 0 0;font-size:.95rem}.reset-button{color:var(--sfm-blue);background:#fff;border:1px solid #002e6d38;border-radius:999px;padding:10px 16px;font-weight:700;transition:all .2s}.reset-button:hover{background:var(--sfm-blue);color:#fff}.messages{flex-direction:column;flex:1;gap:14px;padding:26px 28px;display:flex;overflow-y:auto}.message{display:flex}.message.user{justify-content:flex-end}.message.bot{justify-content:flex-start}.message-bubble{border-radius:22px;max-width:min(680px,88%);padding:14px 16px;box-shadow:0 8px 22px #14213d14}.message.user .message-bubble{background:var(--sfm-blue);color:#fff;border-bottom-right-radius:6px}.message.bot .message-bubble{color:var(--text-main);border:1px solid var(--border);background:#fff;border-bottom-left-radius:6px}.message-error .message-bubble{color:var(--danger);border-color:#b4231859}.message-bubble p{white-space:pre-line;margin:0;line-height:1.45}.loading-bubble{align-items:center;gap:5px;width:fit-content;display:flex}.loading-bubble span{background:var(--sfm-green);border-radius:999px;width:6px;height:6px;animation:1s ease-in-out infinite bounce}.loading-bubble span:nth-child(2){animation-delay:.15s}.loading-bubble span:nth-child(3){animation-delay:.3s}@keyframes bounce{0%,80%,to{opacity:.45;transform:translateY(0)}40%{opacity:1;transform:translateY(-4px)}}.chat-form{border-top:1px solid var(--border);background:#fff;gap:12px;padding:20px 28px;display:flex}.chat-form input{border:1px solid var(--border);color:var(--text-main);background:#fbfdff;border-radius:999px;outline:none;flex:1;padding:14px 18px}.chat-form input:focus{border-color:var(--sfm-blue);box-shadow:0 0 0 4px #002e6d14}.chat-form button{background:var(--sfm-green);color:#fff;border:none;border-radius:999px;padding:14px 22px;font-weight:800;transition:all .2s}.chat-form button:hover:not(:disabled){background:#4f8c08}.chat-form button:disabled{cursor:not-allowed;opacity:.6}.demo-notice{color:var(--text-muted);text-align:center;background:#fff;padding:0 28px 18px;font-size:.78rem;line-height:1.35}@media (width<=720px){.app-shell{padding:0}.chat-card{border-radius:0;height:100vh}.chat-header{flex-direction:column;align-items:flex-start;padding:20px}.brand-logo{width:auto;height:48px}.messages,.chat-form,.demo-notice{padding-left:18px;padding-right:18px}.chat-form{flex-direction:column}.chat-form button{width:100%}.message-bubble{max-width:94%}}