:root{--bg-primary: #ffffff;--bg-secondary: #f7f7f8;--bg-message-user: #000000;--bg-message-agent: #f0f0f0;--text-primary: #1a1a1a;--text-secondary: #6b6b6b;--text-message-user: #ffffff;--text-message-agent: #1a1a1a;--border: #e5e5e5;--accent: #000000;--error: #dc2626;--radius: 16px;--radius-sm: 8px}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%;width:100%;overflow:hidden;position:fixed;top:0;left:0}@supports (height: 100dvh){html,body,#root{height:100dvh;position:static}}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:16px;line-height:1.5;color:var(--text-primary);background:var(--bg-primary);-webkit-font-smoothing:antialiased}.chat-container{display:flex;flex-direction:column;height:100%;max-width:600px;margin:0 auto;overflow:hidden}.chat-header{padding:16px 20px;border-bottom:1px solid var(--border);background:var(--accent);color:#fff;flex-shrink:0}.header-brand{display:flex;align-items:center;justify-content:space-between}.header-logo{height:28px;width:auto;flex-shrink:0}.header-text{text-align:right}.header-text h1{font-size:18px;font-weight:600;color:#fff}.header-text p{font-size:13px;color:#ffffffb3;margin-top:1px}.messages-container{flex:1;overflow-y:auto;overflow-x:hidden;padding:20px;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;touch-action:pan-y;min-height:0}.message{margin-bottom:16px;max-width:85%;animation:fadeIn .2s ease}.message-agent{margin-right:auto}.message-user{margin-left:auto}.message-bubble{padding:12px 16px;border-radius:var(--radius);font-size:15px;line-height:1.5;word-wrap:break-word}.message-bubble p{margin-bottom:12px}.message-bubble p:last-child{margin-bottom:0}.message-agent .message-bubble{background:var(--bg-message-agent);color:var(--text-message-agent);border-bottom-left-radius:4px}.message-user .message-bubble{background:var(--bg-message-user);color:var(--text-message-user);border-bottom-right-radius:4px}.status-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;color:var(--text-secondary);font-size:14px;animation:fadeIn .3s ease}.status-bar-dot{width:6px;height:6px;background:var(--text-secondary);border-radius:50%;animation:statusPulse 1.5s infinite ease-in-out;flex-shrink:0}@keyframes statusPulse{0%,to{opacity:.3}50%{opacity:1}}.connection-banner{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;background:var(--error);color:#fff;font-size:13px;flex-shrink:0}.banner-dismiss{background:none;border:none;color:#fff;text-decoration:underline;cursor:pointer;font-size:13px;padding:0}.input-container{padding:12px 16px;padding-bottom:calc(12px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--border);background:var(--bg-primary);flex-shrink:0}.input-form{display:flex;gap:8px;align-items:flex-end}.input-field{flex:1;border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;font-size:16px;font-family:inherit;resize:none;outline:none;max-height:120px;min-height:44px;line-height:1.4}.input-field:focus{border-color:var(--accent)}.send-button{width:44px;height:44px;border-radius:50%;border:none;background:var(--accent);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:18px}.mic-button{width:44px;height:44px;border-radius:50%;border:1px solid var(--border);background:var(--bg-primary);cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:18px;transition:background .2s,border-color .2s}.mic-button:disabled{opacity:.4;cursor:not-allowed}.mic-active{background:var(--error);border-color:var(--error);color:#fff;animation:micPulse 1.5s infinite}@keyframes micPulse{0%,to{box-shadow:0 0 #dc262666}50%{box-shadow:0 0 0 8px #dc262600}}.send-button:disabled{opacity:.4;cursor:not-allowed}.typing-indicator{display:flex;gap:4px;padding:12px 16px;background:var(--bg-message-agent);border-radius:var(--radius);border-bottom-left-radius:4px;width:fit-content;margin-bottom:16px}.typing-dot{width:8px;height:8px;background:var(--text-secondary);border-radius:50%;animation:typingBounce 1.4s infinite ease-in-out}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:16px;padding:20px}.loading-screen p{color:var(--text-secondary);font-size:15px}.loading-spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}.error-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:16px;padding:40px 20px;text-align:center}.error-screen h2{font-size:20px}.error-screen p{color:var(--text-secondary);font-size:15px;max-width:320px}.retry-button,.fallback-button{padding:12px 24px;border-radius:var(--radius);font-size:15px;font-weight:500;cursor:pointer;border:none;min-height:44px}.retry-button{background:var(--accent);color:#fff}.fallback-button{background:transparent;color:var(--text-secondary);text-decoration:underline}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}@keyframes typingBounce{0%,80%,to{transform:scale(.6);opacity:.4}40%{transform:scale(1);opacity:1}}@keyframes spin{to{transform:rotate(360deg)}}@media(min-width:768px){.chat-container{max-width:640px;border-left:1px solid var(--border);border-right:1px solid var(--border)}}