*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body{-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;background:var(--cs-bg);width:100%;height:100%;color:var(--cs-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;overflow:hidden}#app{flex-direction:column;height:100%;display:flex;overflow:hidden}.nav-bar{padding:calc(8px + env(safe-area-inset-top,0px)) 16px 8px;min-height:calc(64px + env(safe-area-inset-top,0px));background:var(--cs-nav);border-bottom:1px solid var(--cs-border);flex-shrink:0;align-items:center;gap:12px;display:flex}.nav-back{background:rgba(var(--cs-primary-rgb), .15);cursor:pointer;width:32px;height:32px;color:var(--cs-primary);border:none;border-radius:50%;justify-content:center;align-items:center;font-size:18px;transition:background .2s;display:flex}.nav-back:active{background:rgba(var(--cs-primary-rgb), .3)}[dir=rtl] .nav-back{transform:scaleX(-1)}.nav-avatar{background:var(--cs-gradient);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;font-size:19px;display:flex}.nav-info{flex-direction:column;flex:1;justify-content:center;gap:2px;min-width:0;display:flex}.nav-title{color:var(--cs-text);white-space:nowrap;text-overflow:ellipsis;font-size:16px;font-weight:600;line-height:1.2;overflow:hidden}.nav-subtitle{color:var(--cs-text-secondary);font-size:12px;font-weight:400;line-height:1.2}[dir=rtl] .nav-info{text-align:right}.chat-area{-webkit-overflow-scrolling:touch;overscroll-behavior:contain;flex-direction:column;flex:1;gap:12px;padding:16px;display:flex;overflow:hidden auto}#messageList{flex-direction:column;gap:8px;display:flex}.date-separator{justify-content:center;padding:4px 0;display:flex}.date-chip{background:rgba(var(--cs-primary-rgb), .08);color:var(--cs-text-muted);border-radius:999px;padding:4px 14px;font-size:11px;font-weight:500}.history-btn{border:1px solid rgba(var(--cs-primary-rgb), .2);background:rgba(var(--cs-primary-rgb), .08);color:var(--cs-primary);cursor:pointer;border-radius:999px;align-self:center;padding:6px 12px;font-size:12px;font-weight:500}.history-btn:disabled{opacity:.6;cursor:default}.msg-row{max-width:80%;animation:.25s ease-out msgIn;display:flex}.msg-row--agent{align-self:flex-start}.msg-row--user{align-self:flex-end;position:relative}[dir=rtl] .msg-row--agent{align-self:flex-end}[dir=rtl] .msg-row--user{align-self:flex-start}.msg-fail-icon{color:#fff;text-align:center;cursor:pointer;-webkit-tap-highlight-color:transparent;background:#ef4444;border:none;border-radius:50%;width:28px;height:28px;font-size:16px;font-weight:700;line-height:28px;transition:transform .15s,box-shadow .15s;position:absolute;top:50%;left:-34px;transform:translateY(-50%);box-shadow:0 2px 8px #ef444459}.msg-fail-icon:active{transform:translateY(-50%)scale(.85);box-shadow:0 1px 4px #ef44444d}[dir=rtl] .msg-fail-icon{left:auto;right:-34px}@keyframes msgIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.bubble{word-break:break-word;padding:10px 14px 4px;font-size:14px;line-height:1.5;position:relative}.bubble--agent{background:var(--cs-bubble-agent);color:var(--cs-bubble-agent-text);border-radius:16px 16px 16px 4px}.bubble--user{background:var(--cs-gradient);color:var(--cs-bubble-user-text);border-radius:16px 16px 4px}[dir=rtl] .bubble--agent{border-radius:16px 16px 4px}[dir=rtl] .bubble--user{border-radius:16px 16px 16px 4px}.bubble-img{cursor:pointer;object-fit:contain;border-radius:8px;max-width:100%;max-height:240px;display:block}.bubble-meta{font-variant-numeric:tabular-nums;justify-content:flex-end;align-items:center;gap:4px;margin-top:6px;padding-bottom:2px;display:flex}.bubble-time{color:var(--cs-text-secondary);font-size:11px}.bubble--user .bubble-time{color:#ffffffb8}.bubble-status{opacity:.84;align-items:center;font-size:11px;display:inline-flex}.bubble--user .bubble-status{color:#ffffffb8}.status-read{color:rgba(var(--cs-primary-rgb), .8)}.quick-replies{flex-wrap:wrap;gap:6px;margin-top:8px;display:flex}.qr-btn{border:1px solid var(--cs-primary);color:var(--cs-primary);cursor:pointer;background:0 0;border-radius:999px;padding:6px 14px;font-family:inherit;font-size:12px;font-weight:500;transition:all .2s}.qr-btn:active{background:var(--cs-primary);color:#fff}.typing-indicator{align-self:flex-start;align-items:flex-end;gap:8px;display:flex}[dir=rtl] .typing-indicator{flex-direction:row-reverse;align-self:flex-end}.typing-dots{background:var(--cs-bubble-agent);border-radius:16px 16px 16px 4px;gap:4px;padding:12px 16px;display:flex}[dir=rtl] .typing-dots{border-radius:16px 16px 4px}.typing-dot{background:var(--cs-primary);border-radius:50%;width:6px;height:6px;animation:1.4s infinite typingBounce}.typing-dot:nth-child(2){opacity:.7;animation-delay:.2s}.typing-dot:nth-child(3){opacity:.4;animation-delay:.4s}@keyframes typingBounce{0%,80%,to{transform:scale(.8)}40%{transform:scale(1.2)}}.input-area{background:var(--cs-surface);border-top:1px solid var(--cs-border);flex-shrink:0}.input-row{align-items:center;gap:8px;padding:10px 12px;display:flex}.emoji-panel{background:var(--cs-card);border-top:1px solid var(--cs-border);flex-wrap:wrap;max-height:200px;padding:10px;display:flex;overflow-y:auto}.emoji-item{text-align:center;cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:6px;width:12.5%;padding:6px 0;font-family:Apple Color Emoji,Segoe UI Emoji,Noto Color Emoji,Segoe UI Symbol,emoji;font-size:24px;line-height:1.2}.emoji-item:active{background:#0000001a}[data-theme=dark] .emoji-item:active{background:#ffffff1a}.input-btn{cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:20px;transition:all .2s;display:flex}.btn-attach{background:var(--cs-card);color:var(--cs-text-secondary)}.btn-attach:active,.btn-emoji:active{opacity:.8;transform:scale(.92)}.btn-emoji,.btn-refresh{color:var(--cs-text-secondary);background:0 0}.btn-refresh:active{opacity:.8;transform:scale(.92)}.btn-send{background:var(--cs-gradient);color:#fff}.btn-send:active{transform:scale(.92)}.btn-send:disabled{opacity:.4}.input-field{background:var(--cs-input-bg);height:36px;color:var(--cs-text);border:none;border-radius:18px;outline:none;flex:1;padding:0 14px;font-family:inherit;font-size:14px}.input-field::placeholder{color:var(--cs-text-muted)}[dir=rtl] .input-field{text-align:right}.safe-area-bottom{height:env(safe-area-inset-bottom,20px);background:var(--cs-surface)}.system-msg{text-align:center;color:var(--cs-text-muted);padding:4px 0;font-size:12px}.connection-status{text-align:center;color:#fff;opacity:0;background:#ef4444;flex-shrink:0;max-height:0;padding:0 12px;font-size:12px;font-weight:600;transition:max-height .24s,padding .24s,opacity .24s;overflow:hidden}.connection-status.show{opacity:1;max-height:36px;padding:8px 12px}.connection-status.connected{background:#34d399}.chat-area::-webkit-scrollbar{width:0}.msg-card{background:linear-gradient(135deg, rgba(var(--cs-primary-rgb), .2), rgba(var(--cs-primary-rgb), .05));border:1px solid rgba(var(--cs-primary-rgb), .15);border-radius:12px;margin-top:8px;padding:12px}.msg-card-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.msg-card-title{color:#fbbf24;align-items:center;gap:6px;font-size:13px;font-weight:600;display:flex}.msg-card-badge{color:#34d399;background:#34d39926;border-radius:999px;padding:2px 8px;font-size:10px;font-weight:600}.msg-card-row{justify-content:space-between;padding:2px 0;font-size:11px;display:flex}.msg-card-label{color:var(--cs-text-muted)}.msg-card-value{color:var(--cs-text);font-weight:500}.msg-card-value.error{color:#f87171}.sending-dots{align-items:center;gap:3px;padding:2px 0;display:inline-flex}.sending-dots i{background:#fff9;border-radius:50%;width:5px;height:5px;animation:1.2s ease-in-out infinite sendDot;display:block}.bubble--agent .sending-dots i{background:var(--cs-text-muted)}.sending-dots i:nth-child(2){animation-delay:.15s}.sending-dots i:nth-child(3){animation-delay:.3s}@keyframes sendDot{0%,80%,to{opacity:.4;transform:scale(.6)}40%{opacity:1;transform:scale(1)}}.cs-toast{color:#fff;white-space:nowrap;pointer-events:none;opacity:0;z-index:9999;background:#000000bf;border-radius:20px;padding:10px 20px;font-size:13px;transition:opacity .25s,transform .25s;position:fixed;bottom:100px;left:50%;transform:translate(-50%)translateY(20px)}.cs-toast.show{opacity:1;transform:translate(-50%)translateY(0)}.scroll-fab{background:var(--cs-primary,#3b82f6);color:#fff;cursor:pointer;z-index:100;-webkit-tap-highlight-color:transparent;border:none;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;font-size:18px;transition:transform .15s;display:flex;position:fixed;bottom:80px;right:16px;box-shadow:0 3px 12px #00000040}.scroll-fab:active{transform:scale(.9)}[dir=rtl] .scroll-fab{left:16px;right:auto}.scroll-fab-arrow{font-size:18px;line-height:1}.scroll-fab-badge{color:#fff;text-align:center;background:#ef4444;border-radius:9px;min-width:18px;height:18px;padding:0 4px;font-size:10px;font-weight:700;line-height:18px;position:absolute;top:-4px;right:-4px}[dir=rtl] .scroll-fab-badge{left:-4px;right:auto}