/* AVCO Chat Widget - 与主站风格一致 */
:root{--chat-primary:#0077B6;--chat-primary-light:#00B4D8;--chat-primary-dark:#023E8A;--chat-bg:#ffffff;--chat-text:#0F172A;--chat-text-light:#475569;--chat-border:#E2E8F0;--chat-radius:16px;--chat-shadow:0 8px 40px rgba(0,0,0,0.15);--chat-bubble-bg:#f0f9ff}
#chat-widget{position:fixed;right:24px;bottom:90px;top:auto;transform:none;z-index:9999;font-family:'Noto Sans SC','Inter',-apple-system,sans-serif}
#chat-bubble{width:64px;height:64px;background:linear-gradient(135deg,var(--chat-primary),var(--chat-primary-light));border-radius:50%;box-shadow:var(--chat-shadow);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all 0.3s;position:relative;border:none}
#chat-bubble:hover{transform:scale(1.08);box-shadow:0 12px 48px rgba(0,119,182,0.35)}
#chat-bubble svg{width:28px;height:28px;fill:#fff;transition:transform 0.3s}
#chat-bubble .chat-badge{position:absolute;top:-4px;right:-4px;width:20px;height:20px;background:#ef4444;border-radius:50%;color:#fff;font-size:11px;font-weight:700;display:none;align-items:center;justify-content:center;border:2px solid #fff}
#chat-bubble .chat-badge.show{display:flex}
#chat-bubbleMinimized{position:relative}
#chat-bubbleMinimized .chat-mini-msg{position:absolute;bottom:72px;right:0;background:#fff;border-radius:12px;padding:10px 16px;font-size:14px;color:var(--chat-text);box-shadow:var(--chat-shadow);white-space:nowrap;opacity:0;transform:translateY(10px);transition:all 0.3s;pointer-events:none;border-left:3px solid var(--chat-primary)}
#chat-bubbleMinimized:hover .chat-mini-msg{opacity:1;transform:translateY(0)}
#chat-window{display:none;position:absolute;bottom:80px;right:0;width:380px;height:540px;background:var(--chat-bg);border-radius:var(--chat-radius);box-shadow:var(--chat-shadow);overflow:hidden;flex-direction:column;border:1px solid var(--chat-border);animation:chatSlideIn 0.3s ease}
#chat-window.open{display:flex}
@keyframes chatSlideIn{from{opacity:0;transform:translateY(20px) scale(0.95)}to{opacity:1;transform:translateY(0) scale(1)}}
.chat-header{background:linear-gradient(135deg,var(--chat-primary),var(--chat-primary-light));color:#fff;padding:16px 20px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0}
.chat-header-info{display:flex;align-items:center;gap:12px}
.chat-avatar{width:40px;height:40px;background:rgba(255,255,255,0.2);border-radius:50%;display:flex;align-items:center;justify-content:center}
.chat-avatar svg{width:22px;height:22px;fill:#fff}
.chat-header-text h3{font-size:15px;font-weight:700;margin:0}
.chat-header-text p{font-size:12px;opacity:0.85;margin:0}
.chat-status{width:10px;height:10px;background:#22c55e;border-radius:50%;display:inline-block;margin-right:4px}
.chat-header-actions{display:flex;gap:8px}
.chat-header-btn{background:none;border:none;cursor:pointer;color:#fff;opacity:0.8;padding:4px;border-radius:6px;transition:all 0.2s;display:flex;align-items:center;justify-content:center}
.chat-header-btn:hover{opacity:1;background:rgba(255,255,255,0.15)}
.chat-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px;background:#f8fafc}
.chat-msg{display:flex;gap:8px;max-width:85%}
.chat-msg.admin{max-align-self:flex-start}
.chat-msg.visitor{max-align-self:flex-end;flex-direction:row-reverse}
.chat-msg-avatar{width:28px;height:28px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}
.chat-msg.admin .chat-msg-avatar{background:var(--chat-primary);color:#fff}
.chat-msg.visitor .chat-msg-avatar{background:var(--chat-primary-light);color:#fff}
.chat-msg.admin .chat-msg-avatar svg{width:14px;height:14px;fill:#fff}
.chat-msg-content{max-width:calc(100% - 36px)}
.chat-msg-bubble{padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.5;word-break:break-word}
.chat-msg.admin .chat-msg-bubble{background:#fff;color:var(--chat-text);border:1px solid var(--chat-border);border-bottom-left-radius:4px}
.chat-msg.visitor .chat-msg-bubble{background:linear-gradient(135deg,var(--chat-primary),var(--chat-primary-light));color:#fff;border-bottom-right-radius:4px}
.chat-msg-time{font-size:11px;color:#94a3b8;margin-top:4px;padding:0 4px}
.chat-msg.ai .chat-msg-bubble{background:var(--chat-bubble-bg);color:var(--chat-text);border:1px solid rgba(0,119,182,0.15);border-bottom-left-radius:4px}
.chat-msg.ai .chat-msg-avatar{background:#10b981;color:#fff;font-size:10px}
.chat-msg-system{text-align:center;font-size:12px;color:#94a3b8;padding:4px 0}
.chat-input-area{padding:12px 16px;background:#fff;border-top:1px solid var(--chat-border);display:flex;gap:8px;align-items:flex-end;flex-shrink:0}
.chat-input-wrap{flex:1;position:relative}
.chat-input{width:100%;padding:10px 14px;background:#f8fafc;border:2px solid var(--chat-border);border-radius:12px;font-size:14px;resize:none;max-height:80px;font-family:inherit;transition:border-color 0.2s;outline:none;color:var(--chat-text)}
.chat-input:focus{border-color:var(--chat-primary)}
.chat-input::placeholder{color:#94a3b8}
.chat-send-btn{width:44px;height:44px;background:linear-gradient(135deg,var(--chat-primary),var(--chat-primary-light));border:none;border-radius:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all 0.2s;flex-shrink:0}
.chat-send-btn:hover{transform:scale(1.05);box-shadow:0 4px 12px rgba(0,119,182,0.3)}
.chat-send-btn svg{width:18px;height:18px;fill:#fff}
.chat-typing{font-size:12px;color:#94a3b8;padding:8px 16px;display:none}
.chat-typing.show{display:block}
.chat-typing-dots{display:inline-flex;gap:3px;margin-left:6px}
.chat-typing-dots span{width:6px;height:6px;background:#94a3b8;border-radius:50%;animation:typingBounce 1.4s infinite ease-in-out}
.chat-typing-dots span:nth-child(1){animation-delay:-0.32s}
.chat-typing-dots span:nth-child(2){animation-delay:-0.16s}
@keyframes typingBounce{0%,80%,100%{transform:scale(0)}50%{transform:scale(1)}}
.chat-quick-replies{display:flex;flex-wrap:wrap;gap:6px;padding:8px 16px;background:#f8fafc;border-top:1px solid var(--chat-border)}
.chat-quick-btn{background:#fff;border:1px solid var(--chat-border);border-radius:20px;padding:6px 14px;font-size:12px;color:var(--chat-text);cursor:pointer;transition:all 0.2s;font-family:inherit}
.chat-quick-btn:hover{background:var(--chat-primary);color:#fff;border-color:var(--chat-primary)}
@media(max-width:480px){#chat-window{width:calc(100vw - 32px);right:-12px;height:480px}#chat-bubble{width:56px;height:56px}}