.chat-layout{display:flex;flex-direction:column;flex:1;min-height:0;width:100%;background-color:#fff;font-family:Inter,system-ui,Segoe UI,sans-serif}.chat-wrapper{flex:1;min-height:0;display:flex;flex-direction:column;justify-content:flex-start;width:100%;max-width:900px;margin:0 auto;gap:12px;overflow-y:auto;padding:0 0 80px;position:relative}.input-container{max-width:900px;margin:0 auto;width:100%;position:fixed;bottom:0;left:0;right:0;background:#fff;z-index:20;box-shadow:0 -2px 6px #0000000d}.scroll-to-bottom{position:fixed;bottom:70px;left:50%;transform:translate(-50%);display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:#f0f0f0e6;border:1px solid #ccc;cursor:pointer;-webkit-user-select:none;user-select:none;z-index:30}.scroll-to-bottom .arrow{font-size:20px;color:#000;line-height:1}.messages{display:flex;flex-direction:column;gap:12px}.message{margin:4px 0;display:flex;width:100%}.assistant-message{align-self:flex-start;width:100%}.assistant-message .message-content{background-color:transparent;color:#000;text-align:left;max-width:100%}.user-message{display:flex;justify-content:flex-end}.user-message .message-content{background:#f0f0f0;border-radius:12px;padding:8px 12px;max-width:70%;word-wrap:break-word;color:#000}.message-content{padding:10px 14px;border-radius:12px;font-size:14px;line-height:1.4;white-space:pre-wrap}@media (max-width: 768px){.chat-wrapper{max-width:100%;width:100%}.input-container{max-width:100%}}.message-input{display:flex;flex-direction:column;align-items:center;width:100%;flex-shrink:0;background:#fff;border-top:1px solid #e0e0e0;padding:8px 0;box-sizing:border-box}.input-row{display:flex;align-items:center;justify-content:center;width:100%;gap:8px}.input-row textarea{flex:1;padding:10px 12px;border:1px solid #e0e0e0;border-radius:12px;font-size:14px;font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;resize:none;overflow:hidden;min-height:1.8em;max-height:40vh;line-height:1.4;box-sizing:border-box}.input-row textarea::placeholder{font-family:inherit;color:#999}.input-row .attach-btn,.input-row .send-btn{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0}.input-row .attach-btn{background:#f5f5f5;border:1px solid #ddd;font-size:20px;color:#333}.input-row .send-btn{background:#000;border:none;color:#fff}.input-row .send-btn:disabled{opacity:.5;cursor:not-allowed}html,body,#root{margin:0;padding:0;height:100%;width:100%;font-family:system-ui,sans-serif;background:#fff}#root{display:flex;flex-direction:column;min-height:100vh}