:root{--ai-bg-primary:#0f1722;--ai-bg-secondary:#1a2332;--ai-bg-tertiary:#243044;--ai-text-primary:#fff;--ai-text-secondary:#a0aec0;--ai-accent:#3b82f6;--ai-accent-light:#60a5fa;--ai-border:#2d3a4d;--ai-shadow:0 10px 40px rgba(0,0,0,.4);--ai-transition:all 0.3s cubic-bezier(0.4,0,0.2,1)}.ai-floating-button{align-items:center;background:var(--ai-bg-primary);border-radius:8px;bottom:24px;color:var(--ai-text-primary);cursor:pointer;display:flex;font-size:34px;height:48px;justify-content:center;position:fixed;right:24px;transition:var(--ai-transition);width:48px;z-index:99999}.ai-floating-button:hover{transform:scale(1.05)}.ai-floating-button:active{transform:scale(.98)}.ai-chat-window{animation:slideUp .3s ease-out;background:var(--ai-bg-primary);border-radius:16px;bottom:24px;display:flex;flex-direction:column;height:600px;max-height:calc(100vh - 48px);overflow:hidden;position:fixed;right:24px;width:400px;z-index:99999}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.ai-chat-header{background:var(--ai-bg-primary);border-bottom:1px solid var(--ai-border);display:flex;justify-content:flex-end;padding:16px}.ai-close-button{align-items:center;background:none;border:none;border-radius:8px;color:var(--ai-text-secondary);cursor:pointer;display:flex;justify-content:center;padding:4px;transition:var(--ai-transition)}.ai-close-button:hover{background:var(--ai-bg-tertiary);color:var(--ai-text-primary)}.ai-chat-messages{display:flex;flex:1;flex-direction:column;gap:16px;overflow-y:auto;padding:20px}.ai-chat-messages::-webkit-scrollbar{width:6px}.ai-chat-messages::-webkit-scrollbar-track{background:var(--ai-bg-secondary)}.ai-chat-messages::-webkit-scrollbar-thumb{background:var(--ai-border);border-radius:3px}.ai-chat-welcome{color:var(--ai-text-secondary);padding:40px 20px;text-align:center}.ai-chat-welcome p{font-size:15px;line-height:1.5;margin:8px 0}.ai-message{display:flex;flex-direction:column}.ai-message-user{align-items:flex-end}.ai-message-assistant{align-items:flex-start}.ai-message-bubble{background:var(--ai-bg-tertiary);border-radius:20px;line-height:1.5;max-width:85%;padding:12px 18px}.ai-message-bubble,.ai-message-content{color:var(--ai-text-primary);font-size:14px}.ai-message-content{line-height:1.7;white-space:pre-wrap}.ai-message-content ol,.ai-message-content ul{margin:8px 0;padding-left:20px}.ai-message-content li{margin:4px 0}.ai-typing-indicator{display:flex;gap:4px;padding:12px 0}.ai-typing-indicator span{animation:bounce 1.4s ease-in-out infinite both;background:var(--ai-accent);border-radius:50%;height:8px;width:8px}.ai-typing-indicator span:first-child{animation-delay:-.32s}.ai-typing-indicator span:nth-child(2){animation-delay:-.16s}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.ai-chat-input-container{align-items:center;background:var(--ai-bg-secondary);border-top:1px solid var(--ai-border);display:flex;gap:12px;padding:16px}.ai-input-wrapper{align-items:center;display:flex;flex:1;position:relative}.ai-chat-input{background:var(--ai-bg-primary);border:1px solid var(--ai-border);border-radius:24px;color:var(--ai-text-primary);font-size:14px;outline:none;padding:12px 60px 12px 20px;transition:var(--ai-transition);width:100%}.ai-char-counter{color:var(--ai-text-secondary);font-size:11px;pointer-events:none;position:absolute;right:16px}.ai-chat-input::-moz-placeholder{color:var(--ai-text-secondary)}.ai-chat-input::placeholder{color:var(--ai-text-secondary)}.ai-chat-input:focus{border-color:var(--ai-accent);box-shadow:0 0 0 3px rgba(59,130,246,.15)}.ai-chat-input:disabled{cursor:not-allowed;opacity:.6}.ai-send-button{align-items:center;background:var(--ai-bg-primary);border:2px solid var(--ai-border);border-radius:50%;color:var(--ai-text-primary);cursor:pointer;display:flex;flex-shrink:0;height:44px;justify-content:center;transition:var(--ai-transition);width:44px}.ai-send-button:hover:not(:disabled){background:var(--ai-accent);border-color:var(--ai-accent)}.ai-send-button:disabled{cursor:not-allowed;opacity:.4}@media (max-width:480px){.ai-chat-window{bottom:16px;height:calc(100vh - 100px);right:16px;width:calc(100vw - 32px)}.ai-floating-button{bottom:16px;height:56px;right:16px;width:56px}}.ai-login-prompt{align-items:center;display:flex;flex-direction:column;gap:16px;height:100%;justify-content:center}.ai-login-prompt p{margin:4px 0}.ai-login-button{background:var(--ai-accent);border-radius:24px;color:var(--ai-text-primary);display:inline-block;font-size:14px;font-weight:600;margin-top:16px;padding:12px 32px;text-decoration:none;transition:var(--ai-transition)}.ai-login-button:hover{background:var(--ai-accent-light);transform:scale(1.02)}