:root{--font-sans:"Inter", system-ui, -apple-system, sans-serif;--font-mono:"JetBrains Mono", monospace;--bg-page:radial-gradient(circle at top, #161925 0%, #090a0f 100%);--bg-card:#161925a6;--border-color:#ffffff14;--accent:#8b5cf6;--accent-hover:#7c3aed;--accent-light:#a78bfa;--accent-gradient:linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);--text-primary:#f3f4f6;--text-secondary:#9ca3af;--text-muted:#6b7280;--bubble-user:var(--accent-gradient);--bubble-assistant:#ffffff0a}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background:var(--bg-page);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;width:100vw;height:100vh;overflow:hidden}#root{width:100%;height:100%}.chat-window-wrapper{justify-content:center;align-items:center;width:100vw;height:100vh;padding:20px;display:flex}.app-container{background-color:var(--bg-card);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border-color);border-radius:24px;width:1060px;max-width:100%;height:82vh;max-height:820px;animation:.4s ease-out fadeIn;display:flex;overflow:hidden;box-shadow:0 20px 50px #0006,0 0 30px #8b5cf60d}.sidebar{border-right:1px solid var(--border-color);background-color:#00000026;flex-direction:column;flex-shrink:0;width:240px;display:flex}.sidebar-header{border-bottom:1px solid var(--border-color);padding:14px 12px}.new-chat-btn{width:100%;color:var(--accent-light);font-family:var(--font-sans);cursor:pointer;background:#8b5cf61f;border:1px solid #8b5cf640;border-radius:10px;align-items:center;gap:8px;padding:9px 12px;font-size:.85rem;font-weight:500;transition:all .2s;display:flex}.new-chat-btn:hover{border-color:var(--accent);background:#8b5cf638}.conv-list{flex-direction:column;flex:1;gap:2px;padding:8px;display:flex;overflow-y:auto}.conv-empty{color:var(--text-muted);text-align:center;margin-top:16px;font-size:.8rem}.conv-item{cursor:pointer;border:1px solid #0000;border-radius:8px;align-items:center;gap:8px;min-width:0;padding:9px 10px;transition:all .15s;display:flex}.conv-item:hover{background-color:#ffffff0d}.conv-item.active{background-color:#8b5cf61f;border-color:#8b5cf640}.conv-icon{color:var(--text-muted);flex-shrink:0}.conv-title{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;flex:1;min-width:0;font-size:.83rem;overflow:hidden}.conv-item.active .conv-title{color:var(--text-primary)}.conv-delete-btn{color:var(--text-muted);cursor:pointer;opacity:0;background:0 0;border:none;border-radius:4px;flex-shrink:0;align-items:center;padding:3px;transition:opacity .15s,color .15s;display:flex}.conv-item:hover .conv-delete-btn{opacity:1}.conv-delete-btn:hover{color:#ef4444;background:#ef44441a}.chat-card{background-color:#0000;flex-direction:column;flex:1;min-width:0;display:flex;overflow:hidden}.chat-empty{color:var(--text-muted);flex:1;justify-content:center;align-items:center;font-size:.9rem;display:flex}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.chat-card-header{border-bottom:1px solid var(--border-color);background-color:#ffffff03;justify-content:space-between;align-items:center;padding:20px 24px;display:flex}.logo-container{align-items:center;gap:12px;display:flex}.logo-icon{background:var(--accent-gradient);border-radius:8px;justify-content:center;align-items:center;width:32px;height:32px;display:flex;box-shadow:0 0 12px #8b5cf666}.logo-text{letter-spacing:-.5px;background:linear-gradient(90deg,#fff,#a78bfa);-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:1.1rem;font-weight:700}.session-badge{color:#10b981;background-color:#10b9811a;border:1px solid #10b98133;border-radius:20px;align-items:center;gap:6px;padding:4px 10px;font-size:.78rem;font-weight:500;display:flex}.session-badge:before{content:"";background-color:#10b981;border-radius:50%;width:6px;height:6px;display:inline-block}.messages-feed{flex-direction:column;flex:1;gap:20px;padding:24px;display:flex;overflow-y:auto}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#ffffff14;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#fff3}.msg-wrapper{gap:12px;max-width:85%;animation:.3s cubic-bezier(.4,0,.2,1) forwards slideUp;display:flex}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.msg-wrapper.user{flex-direction:row-reverse;align-self:flex-end}.msg-wrapper.assistant{align-self:flex-start}.msg-avatar{-webkit-user-select:none;user-select:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:.8rem;font-weight:600;display:flex}.msg-wrapper.user .msg-avatar{background:var(--accent-gradient);color:#fff;box-shadow:0 0 10px #8b5cf64d}.msg-wrapper.assistant .msg-avatar{color:var(--accent-light);border:1px solid var(--border-color);background-color:#ffffff14}.msg-bubble-container{flex-direction:column;gap:4px;display:flex}.msg-wrapper.user .msg-bubble-container{align-items:flex-end}.msg-bubble{word-break:break-word;border-radius:16px;padding:12px 16px;font-size:.92rem;line-height:1.45;box-shadow:0 2px 8px #0000001a}.msg-wrapper.user .msg-bubble{background:var(--bubble-user);color:#fff;border-bottom-right-radius:4px}.msg-wrapper.assistant .msg-bubble{background-color:var(--bubble-assistant);color:var(--text-primary);border:1px solid var(--border-color);border-bottom-left-radius:4px}.msg-time{color:var(--text-muted);margin-top:2px;font-size:.7rem}.msg-bubble-md{flex-direction:column;gap:10px;display:flex}.msg-bubble-md p{margin:0;line-height:1.6}.msg-bubble-md h1,.msg-bubble-md h2,.msg-bubble-md h3,.msg-bubble-md h4{color:var(--text-primary);margin:4px 0 2px;font-weight:600}.msg-bubble-md h1{font-size:1.15rem}.msg-bubble-md h2{font-size:1.05rem}.msg-bubble-md h3{font-size:.97rem}.msg-bubble-md ul,.msg-bubble-md ol{flex-direction:column;gap:4px;padding-left:20px;display:flex}.msg-bubble-md li{line-height:1.5}.msg-bubble-md strong{color:var(--text-primary);font-weight:600}.msg-bubble-md em{color:var(--text-secondary);font-style:italic}.msg-bubble-md code{font-family:var(--font-mono);background:#ffffff14;border-radius:4px;padding:2px 6px;font-size:.85em}.msg-bubble-md pre{border:1px solid var(--border-color);background:#0000004d;border-radius:8px;padding:12px 14px;overflow-x:auto}.msg-bubble-md pre code{background:0 0;padding:0;font-size:.83rem}.msg-bubble-md hr{border:none;border-top:1px solid var(--border-color);margin:4px 0}.msg-bubble-md blockquote{border-left:3px solid var(--accent);color:var(--text-secondary);padding-left:12px}.input-form{border-top:1px solid var(--border-color);background-color:#ffffff01;padding:20px 24px}.input-bar-container{border:1px solid var(--border-color);background-color:#0003;border-radius:14px;align-items:center;gap:12px;padding:6px 6px 6px 14px;transition:all .2s;display:flex}.input-bar-container:focus-within{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent), 0 0 15px #8b5cf626}.chat-input-field{color:var(--text-primary);font-family:var(--font-sans);background:0 0;border:none;outline:none;flex:1;height:38px;font-size:.95rem}.chat-input-field::placeholder{color:var(--text-muted)}.send-btn{background:var(--accent-gradient);color:#fff;cursor:pointer;border:none;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;transition:all .2s cubic-bezier(.4,0,.2,1);display:flex}.send-btn:hover:not(:disabled){transform:scale(1.04);box-shadow:0 0 10px #8b5cf64d}.send-btn:disabled{color:var(--text-muted);cursor:not-allowed;background:#ffffff0a}@media (width<=640px){.chat-window-wrapper{padding:0}.app-container{border:none;border-radius:0;width:100%;height:100vh;max-height:100vh}.sidebar{width:180px}}.typing-dot{color:var(--accent-light);font-size:1.5rem;line-height:.5;animation:1.4s infinite both typingBounce}@keyframes typingBounce{0%,80%,to{opacity:.2;transform:translateY(0)}40%{opacity:1;transform:translateY(-6px)}}.sidebar-footer{border-top:1px solid var(--border-color);align-items:center;gap:8px;padding:12px;display:flex}.sidebar-user-email{color:var(--text-muted);white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:.73rem;overflow:hidden}.sign-out-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:6px;flex-shrink:0;align-items:center;padding:4px;transition:color .15s,background .15s;display:flex}.sign-out-btn:hover{color:var(--text-primary);background:#ffffff0f}.login-wrapper{justify-content:center;align-items:center;width:100vw;height:100vh;display:flex}.login-card{background:var(--bg-card);border:1px solid var(--border-color);-webkit-backdrop-filter:blur(20px);border-radius:24px;flex-direction:column;align-items:center;gap:10px;padding:48px 44px;animation:.4s ease-out fadeIn;display:flex;box-shadow:0 20px 50px #0006,0 0 30px #8b5cf60d}.login-logo{width:48px;height:48px;margin-bottom:6px}.login-title{letter-spacing:-.5px;background:linear-gradient(90deg,#fff,#a78bfa);-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:1.6rem;font-weight:700}.login-subtitle{color:var(--text-muted);margin-bottom:12px;font-size:.88rem}.google-btn{color:#333;cursor:pointer;background:#fff;border:none;border-radius:10px;align-items:center;gap:10px;padding:11px 20px;font-size:.9rem;font-weight:500;transition:box-shadow .2s,background .2s;display:flex}.google-btn:hover{background:#f5f5f5;box-shadow:0 2px 10px #00000040}