body{background:linear-gradient(135deg,#e0e7ff 0%,#4b88c5 100%);font-family:Segoe UI,Arial,sans-serif;margin:0;padding:0}html,body{max-width:100%;overflow-x:hidden;-webkit-overflow-scrolling:touch}*,*:before,*:after{box-sizing:border-box}.chat-container{max-width:1000px;height:90vh;margin:40px auto;background:#fff;border-radius:18px;box-shadow:0 6px 32px #00000014;padding:32px 24px 24px;position:relative;display:flex;flex-direction:column;box-sizing:border-box}.chat-title{text-align:center;font-size:1.5rem;color:#2563eb;margin-bottom:8px}.subtitle{font-size:1rem;color:#64748b;font-weight:400}.chat-history{flex:1;padding:20px 0;overflow-y:auto}.chat-bubble{display:flex;flex-direction:column;max-width:100%;margin-bottom:12px;padding:12px 16px;border-radius:14px;box-shadow:0 2px 8px #0000000a;font-size:1rem;line-height:1.5}.chat-bubble.user{align-self:flex-end;background:#e0f2fe;color:#2563eb}.chat-bubble.assistant{align-self:flex-start;background:#f3f4f6;color:#334155}.chat-role{font-weight:700;margin-bottom:4px;font-size:.95em}.chat-content{word-break:break-word}.user .chat-content{background-color:#e0f2fe;color:#2563eb}.assistant .chat-content{background-color:#f3f4f6}.empty-chat{text-align:center;color:#94a3b8;font-style:italic;margin-top:40px}.typing-indicator{display:flex;justify-content:flex-start;align-items:center;margin:8px 0;padding-left:8px}.dot{width:8px;height:8px;margin:0 2px;background:#2563eb;border-radius:50%;display:inline-block;animation:blink 1.2s infinite both}.dot:nth-child(2){animation-delay:.2s}.dot:nth-child(3){animation-delay:.4s}.markdown-body a{color:#2563eb;font-weight:500;text-decoration:underline;cursor:pointer}.markdown-body a:hover{color:#1d4ed8}@keyframes blink{0%,80%,to{opacity:.2}40%{opacity:1}}.chat-form{display:flex;gap:8px;margin-top:12px;border-top:1px solid #e2e8f0;padding:12px;background:#fff}.chat-input{flex:1;padding:10px 14px;border:1px solid #cbd5e1;border-radius:8px;font-size:1rem;outline:none;transition:border .2s}.chat-input:focus{border-color:#2563eb}.send-btn{background:#2563eb;color:#fff;border:none;border-radius:8px;padding:0 18px;height:40px;min-width:60px;font-size:1rem;cursor:pointer;display:flex;align-items:center;justify-content:center}.send-btn:hover{background:#1d4ed8}@media screen and (max-width: 768px){body{background:#f8fafc}.chat-container{height:100vh;margin:0;padding:0;max-width:100%;border-radius:0;box-shadow:none;padding-left:env(safe-area-inset-left,0px);padding-right:env(safe-area-inset-right,0px);padding-bottom:env(safe-area-inset-bottom,0px)}.chat-title{font-size:1.2rem;margin:12px 0 4px}.subtitle{font-size:.9rem;margin-bottom:8px}.chat-history{flex:1;padding:12px;margin:0;overflow-y:auto;background:#f9fafb}.chat-bubble{font-size:.95rem;border-radius:12px;margin:10px;max-width:100%}.chat-form{display:flex;gap:6px;padding:8px 15px;padding-left:calc(15px + env(safe-area-inset-left));padding-right:calc(15px + env(safe-area-inset-right));padding-bottom:calc(8px + env(safe-area-inset-bottom));background:#fff;position:sticky;bottom:0;left:0;right:0}.chat-input{flex:1;padding:10px 12px;font-size:.95rem}.send-btn{width:42px;height:42px;min-width:unset;padding:0;font-size:1.2rem;border-radius:50%}}