*{margin:0;padding:0;box-sizing:border-box}:root{--bg: #ededed;--header-bg: #2e2e2e;--header-text: #fff;--bubble-user: #95ec69;--bubble-assistant: #fff;--text-primary: #111;--text-secondary: #888;--input-bg: #fff;--border: #d9d9d9;--accent: #07c160;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);--safe-left: env(safe-area-inset-left, 0px);--safe-right: env(safe-area-inset-right, 0px)}body{font-family:SF Pro Display,PingFang SC,Noto Sans SC,-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft 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var(--border);border-radius:8px;font-size:14px;outline:none;transition:border-color .2s ease,box-shadow .2s ease;font-family:monospace}.auth-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #07c1601a}.auth-button{width:100%;padding:12px;margin-top:16px;background:var(--accent);color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:500;cursor:pointer;transition:opacity .2s ease,transform .1s ease}.auth-button:active{transform:scale(.98)}.auth-button:disabled{opacity:.5;cursor:not-allowed;transform:none}.auth-error{color:#e53935;font-size:13px;margin-top:12px}#app{width:100%;height:100dvh;display:flex;flex-direction:column;background:var(--bg);position:relative}.chat-container{display:flex;flex-direction:column;height:100dvh}.chat-header{background:var(--header-bg);color:var(--header-text);padding:12px 16px;padding-top:max(12px,var(--safe-top));padding-left:max(16px,var(--safe-left));padding-right:max(16px,var(--safe-right));display:flex;align-items:center;justify-content:space-between;flex-shrink:0}.chat-header-name{font-size:16px;font-weight:600}.chat-header-sub{display:block;font-size:11px;color:#aaa;margin-top:2px}.chat-header-right{display:flex;gap:var(--space-sm)}.header-btn{background:none;border:none;color:#aaa;cursor:pointer;padding:6px;border-radius:6px;display:flex;align-items:center;transition:color .2s ease,background .2s ease}.name-editable{cursor:pointer;border-bottom:1px dashed #666;transition:border-color .2s ease}.name-editable:hover{border-bottom-color:var(--accent)}.name-edit-input{background:#ffffff26;border:1px solid rgba(255,255,255,.3);border-radius:3px;color:#aaa;font-size:inherit;font-family:inherit;padding:0 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fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.message-row.user{align-self:flex-end}.message-row.assistant{align-self:flex-start}.avatar{width:36px;height:36px;border-radius:4px;font-size:12px;font-weight:600;display:flex;align-items:center;justify-content:center;flex-shrink:0}.avatar-yichen{object-fit:cover}.avatar-user{background:#4a90d9;color:#fff;font-size:11px}.avatar-spacer{visibility:hidden}.bubble{padding:8px 12px;border-radius:4px;font-size:15px;line-height:1.5;word-break:break-word;position:relative}.bubble-user{background:var(--bubble-user);color:#000}.bubble-assistant{background:var(--bubble-assistant);color:#000}.bubble.streaming:after{content:"▊";animation:blink .8s infinite;opacity:.5;margin-left:1px}@keyframes blink{0%,to{opacity:0}50%{opacity:.5}}.input-bar{display:flex;align-items:flex-end;gap:var(--space-sm);padding:8px 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ease}.send-button:active:not(:disabled){transform:scale(.96)}.send-button:disabled{background:#ccc;cursor:not-allowed}.messages-area::-webkit-scrollbar{width:4px}.messages-area::-webkit-scrollbar-thumb{background:#ccc;border-radius:2px}@media(min-width:480px){.auth-card{max-width:380px;padding:44px 32px}.auth-avatar{width:72px;height:72px}.auth-title{font-size:24px}.auth-subtitle{font-size:14px;margin-bottom:32px}.message-row{max-width:85%}}@media(min-width:768px){body{background:linear-gradient(135deg,#e8e8e8,#d5d5d5,#c8c8c8)}#app{background:transparent;height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px}.auth-card{max-width:400px;padding:56px 40px}.auth-avatar{width:80px;height:80px}.chat-container{width:90%;max-width:800px;height:calc(100dvh - 40px);border-radius:12px;box-shadow:0 4px 24px #00000014,0 1px 4px #0000000a;overflow:hidden}.chat-header{border-radius:12px 12px 0 0;padding:14px 20px}.messages-area{gap:6px;background:var(--bg);padding:20px 24px}.message-row{max-width:70%}.bubble{padding:10px 14px;border-radius:6px}.avatar{width:40px;height:40px}.avatar-yichen{object-fit:cover}.input-bar{border-radius:0 0 12px 12px;padding:10px 16px}.input-textarea{padding:10px 14px;border-radius:6px}.send-button{padding:10px 20px;border-radius:6px}.empty-avatar{width:80px;height:80px}.empty-state p{font-size:15px}.messages-area::-webkit-scrollbar{width:6px}}@media(min-width:1024px){.chat-container{width:80%;max-width:900px;box-shadow:0 8px 40px #0000001f,0 2px 8px #0000000f}.auth-card{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffffff2;box-shadow:0 24px 80px #00000040,0 4px 12px #0000001a}.message-row{max-width:65%}}@media(hover:hover){.auth-button:hover:not(:disabled){opacity:.9}.header-btn:hover{color:#fff;background:#ffffff1a}.send-button:hover:not(:disabled){opacity:.9}.auth-card:hover{transform:translateY(-2px);box-shadow:0 24px 72px #00000059}}.admin-container{width:100%;max-width:1400px;margin:0 auto;padding:var(--space-md);padding-top:max(var(--space-md),var(--safe-top));padding-bottom:max(var(--space-md),var(--safe-bottom));padding-left:max(var(--space-md),var(--safe-left));padding-right:max(var(--space-md),var(--safe-right));min-height:100dvh}.admin-header{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:12px;margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--border)}.admin-title{font-size:20px;font-weight:700}.admin-subtitle{font-size:13px;color:var(--text-secondary)}.admin-header-right{display:flex;gap:var(--space-sm)}.admin-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:28px}.stat-card{background:#fff;border-radius:10px;padding:14px;border:1px solid var(--border);transition:box-shadow .2s 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ease}.key-card.key-disabled{opacity:.6;background:#fafafa}.key-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;flex-wrap:wrap;gap:var(--space-xs)}.key-name{font-size:15px;font-weight:600;display:flex;align-items:center;gap:var(--space-sm);flex-wrap:wrap}.key-id{font-size:11px;color:var(--text-secondary);font-family:monospace}.badge{font-size:10px;padding:2px 6px;border-radius:4px;font-weight:500}.badge-disabled{background:#fce4ec;color:#c62828}.key-stats-row{display:flex;gap:12px;margin-bottom:8px;flex-wrap:wrap}.key-stat{display:flex;flex-direction:column;min-width:0}.key-stat-label{font-size:11px;color:var(--text-secondary)}.key-stat-value{font-size:14px;font-weight:600}.token-bar{height:4px;background:#eee;border-radius:2px;margin-bottom:8px;overflow:hidden}.token-bar-fill{height:100%;background:var(--accent);border-radius:2px;transition:width .3s ease}.key-meta{display:flex;gap:12px;font-size:11px;color:var(--text-secondary);margin-bottom:10px;flex-wrap:wrap}.key-actions{display:flex;gap:var(--space-sm);align-items:center;flex-wrap:wrap}.token-add-group{display:flex;gap:4px;align-items:center}.token-input{width:90px;padding:4px 8px;border:1px solid var(--border);border-radius:4px;font-size:12px;outline:none;transition:border-color .2s ease}.token-input:focus{border-color:var(--accent)}.btn{border:none;border-radius:6px;cursor:pointer;font-size:13px;font-weight:500;transition:opacity .2s ease,transform .1s ease}.btn:active:not(:disabled){transform:scale(.97)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-sm{padding:5px 12px;font-size:12px}.btn-primary{background:var(--accent);color:#fff}.btn-danger{background:#e53935;color:#fff}.btn-success{background:#43a047;color:#fff}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text-primary)}.key-messages{margin-top:12px;border-top:1px solid #eee;padding-top:12px;max-height:300px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#ccc transparent}.msg-row{display:flex;gap:var(--space-sm);padding:4px 0;font-size:13px;line-height:1.4;flex-wrap:wrap}.msg-row.msg-user{background:#f9f9f9;padding:4px 6px;border-radius:4px}.msg-time{color:var(--text-secondary);font-size:11px;flex-shrink:0;width:90px}.msg-role{font-weight:600;flex-shrink:0;width:70px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.msg-content{word-break:break-word;min-width:0;flex:1}.msg-empty{text-align:center;color:var(--text-secondary);padding:20px;font-size:13px}.msg-load-more{display:block;margin:8px auto 0}.admin-tabs{display:flex;gap:0;margin-bottom:20px;border-bottom:2px solid var(--border)}.admin-tab{padding:8px 20px;font-size:14px;font-weight:500;background:none;border:none;border-bottom:2px solid transparent;margin-bottom:-2px;cursor:pointer;color:var(--text-secondary);transition:color .2s ease,border-color .2s ease}.admin-tab.active{color:var(--accent);border-bottom-color:var(--accent)}.admin-chat{display:flex;flex-direction:column;gap:12px}.admin-chat-toolbar{display:flex;gap:var(--space-sm);align-items:center;flex-wrap:wrap}.admin-chat-select{flex:1;min-width:200px;padding:8px 12px;border:1px solid var(--border);border-radius:6px;font-size:13px;outline:none;background:#fff;transition:border-color .2s ease}.admin-chat-select:focus{border-color:var(--accent)}.admin-chat-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:40px 20px;color:var(--text-secondary);font-size:14px}.admin-chat-window{display:flex;flex-direction:column;background:var(--bg);border:1px solid var(--border);border-radius:10px;overflow:hidden;height:calc(100dvh - 220px);min-height:300px}.admin-chat-messages{flex:1;overflow-y:auto;padding:var(--space-md) 12px;display:flex;flex-direction:column;gap:6px;scrollbar-width:thin;scrollbar-color:#ccc transparent}.admin-chat-messages::-webkit-scrollbar{width:4px}.admin-chat-messages::-webkit-scrollbar-thumb{background:#ccc;border-radius:2px}.admin-msg-wrapper{display:flex;flex-direction:column;gap:var(--space-xs);max-width:90%}.admin-msg-right{align-self:flex-end}.admin-msg-left{align-self:flex-start}.admin-msg-wrapper .message-row{align-self:auto;max-width:100%}.admin-msg-meta{display:flex;align-items:center;gap:6px;margin-bottom:2px}.admin-msg-sender{font-size:11px;color:var(--text-secondary)}.badge-admin{background:#e3f2fd;color:#1565c0;font-size:10px;padding:1px 6px;border-radius:3px;font-weight:500}.badge-user-source{background:#f3e5f5;color:#7b1fa2;font-size:10px;padding:1px 6px;border-radius:3px;font-weight:500}.avatar-admin{background:#1565c0;color:#fff;font-size:11px}.debug-info{display:flex;gap:12px;padding:4px 12px;margin:2px 0 4px 44px;font-size:11px;color:var(--text-secondary);background:#f5f5f5;border-radius:4px;flex-wrap:wrap}.debug-info.debug-error{background:#fce4ec;color:#c62828}.debug-info.debug-info-right{margin-left:auto;margin-right:44px}@media(max-width:479px){.admin-container{padding:12px;padding-top:max(12px,var(--safe-top));padding-bottom:max(12px,var(--safe-bottom))}.admin-title{font-size:18px}.admin-stats{grid-template-columns:1fr 1fr;gap:8px}.stat-card{padding:12px}.stat-value{font-size:18px}.key-card{padding:12px}.key-actions{flex-direction:column;align-items:stretch}.key-actions .btn-sm{text-align:center}.token-add-group{width:100%}.token-input{flex:1;width:auto}.search-input{max-width:none}.section-header{flex-direction:column;align-items:flex-start}.msg-time,.msg-role{width:auto}.msg-row{font-size:12px}.key-messages{max-height:250px}}@media(min-width:480px)and (max-width:767px){.admin-stats{grid-template-columns:repeat(2,1fr)}.key-stats-row{gap:16px}}@media(min-width:768px){body:has(.admin-container){background:var(--bg)}#app:has(.admin-container){align-items:stretch;justify-content:flex-start;padding:0;height:auto;min-height:100dvh}.admin-container{padding:var(--space-lg)}.admin-stats{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.admin-title{font-size:22px}.key-card{padding:16px}.key-messages{max-height:400px}.admin-chat-messages{padding:20px 24px}}@media(min-width:1024px){.admin-container{padding:32px 48px}.keys-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(400px,1fr))}.admin-stats{grid-template-columns:repeat(4,1fr)}}@media(hover:hover){.btn:hover:not(:disabled){opacity:.85}.stat-card:hover,.key-card:hover{box-shadow:0 2px 12px #0000000f}}