@font-face{font-family:ZCOOL;src:url(/fonts/zcool.ttf) format("truetype");font-display:swap}@font-face{font-family:AlibabaPuHui;src:url(/fonts/alibaba-35.woff2) format("woff2");font-weight:300;font-display:swap}@font-face{font-family:AlibabaPuHui;src:url(/fonts/alibaba-55.woff2) format("woff2");font-weight:400;font-display:swap}@font-face{font-family:AlibabaPuHui;src:url(/fonts/alibaba-65.woff2) format("woff2");font-weight:500;font-display:swap}@font-face{font-family:Quicksand;src:url(/fonts/quicksand-regular.ttf) format("truetype");font-weight:400;font-display:swap}@font-face{font-family:Quicksand;src:url(/fonts/quicksand-medium.ttf) format("truetype");font-weight:500;font-display:swap}@font-face{font-family:Quicksand;src:url(/fonts/quicksand-bold.ttf) format("truetype");font-weight:700;font-display:swap}:root{--bg: #FFFBF5;--panel: #F8F2F4;--panel-2: #FCF6F9;--accent: #FFD6E0;--accent-2: #FFC2D6;--accent-deep: #F7A8C4;--text: #665857;--title: #443A39;--muted: #A89C9B;--border: #EAE5E2;--bubble-me-1: #FFE6EF;--bubble-me-2: #FFD6E0;--bubble-other-1: #D9EEFF;--bubble-other-2: #C9EEFF;--bubble-sys-1: #FFF6CC;--bubble-sys-2: #FFEEBB;--shadow: 0 3px 10px rgba(255, 180, 210, .12);--shadow-strong: 0 8px 24px rgba(255, 180, 210, .18);--radius-bubble: 22px;--radius-card: 18px}[data-theme=dark]{--bg: #2A2429;--panel: #383033;--panel-2: #423A3D;--accent: #B87A93;--accent-2: #A86A85;--accent-deep: #C98AA3;--text: #EAE0E1;--title: #F3E9EA;--muted: #B5A7A9;--border: #4A4145;--bubble-me-1: #C98AA3;--bubble-me-2: #B87A93;--bubble-other-1: #7FA9C4;--bubble-other-2: #6A99BB;--bubble-sys-1: #5A5340;--bubble-sys-2: #4A4536;--shadow: 0 3px 10px rgba(0, 0, 0, .3);--shadow-strong: 0 8px 24px rgba(0, 0, 0, .4)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:AlibabaPuHui,PingFang SC,Microsoft YaHei,system-ui,sans-serif;font-weight:400;background:var(--bg);color:var(--text);background-image:radial-gradient(rgba(255,214,224,.18) 1px,transparent 1px);background-size:22px 22px;transition:background-color .3s,color .3s}button{cursor:pointer;font:inherit;font-family:AlibabaPuHui,sans-serif}input{font:inherit;font-family:AlibabaPuHui,sans-serif}.font-happy{font-family:ZCOOL,AlibabaPuHui,sans-serif;color:var(--title)}.font-quick{font-family:Quicksand,sans-serif}.auth-wrap{height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#fff0f7,#e4f5ff);position:relative;overflow:hidden}.auth-card{width:360px;background:var(--panel);padding:34px 30px 30px;border-radius:var(--radius-card);border:1px solid var(--border);box-shadow:var(--shadow-strong);position:relative;z-index:1;animation:popIn .4s cubic-bezier(.2,.9,.3,1.2) both}.auth-card:before{content:"☁️";position:absolute;top:-20px;left:50%;transform:translate(-50%);font-size:38px;filter:drop-shadow(0 2px 4px rgba(255,180,210,.3))}.auth-card h1{margin:8px 0 4px;font-size:26px;text-align:center;font-family:ZCOOL,sans-serif;color:var(--title)}.auth-card p{margin:0 0 22px;color:var(--muted);font-size:13px;text-align:center}.auth-card input{width:100%;padding:12px 14px;margin-bottom:14px;border-radius:14px;border:1.5px solid var(--border);background:#fff;color:var(--text);outline:none;transition:border-color .25s,box-shadow .25s}.auth-card input:focus{border-color:var(--accent);box-shadow:0 0 0 4px #ffd6e040}.auth-card button{width:100%;padding:12px;border:none;border-radius:14px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-weight:500;font-family:ZCOOL,sans-serif;font-size:16px;transition:transform .15s,box-shadow .25s;box-shadow:var(--shadow)}.auth-card button:hover{transform:scale(1.02);box-shadow:var(--shadow-strong)}.auth-card button:active{transform:scale(.96)}.auth-switch{margin-top:16px;font-size:13px;color:var(--muted);text-align:center}.auth-switch span{color:var(--accent-deep);cursor:pointer;font-weight:500}.auth-err{color:#e6739f;font-size:13px;margin-bottom:10px;min-height:16px;text-align:center}.auth-notice{color:#6bbf8a;font-size:13px;margin-bottom:10px;min-height:16px;text-align:center}.app{display:grid;grid-template-columns:300px 1fr 240px;height:100%;position:relative;z-index:1}.sidebar{background:linear-gradient(180deg,#fff0f7,#ffe3ee);border-right:1px solid var(--border);display:flex;flex-direction:column;min-width:0}.sidebar-head{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--border)}.sidebar-head .me{font-weight:500;font-family:ZCOOL,sans-serif;color:var(--title);font-size:18px}.sidebar-head button{background:#fff9;border:1px solid var(--border);color:var(--text);border-radius:12px;padding:6px 10px;font-size:13px;transition:transform .15s,box-shadow .2s}.sidebar-head button:hover{transform:scale(1.03);box-shadow:var(--shadow)}.sidebar-head button:active{transform:scale(.96)}.conv-list{overflow-y:auto;flex:1;padding:8px}.conv-item{padding:12px 14px;border-radius:16px;cursor:pointer;display:flex;flex-direction:column;gap:4px;margin-bottom:6px;border:1px solid transparent;transition:background .2s,transform .15s}.conv-item:hover{background:#ffffffb3;transform:translateY(-1px)}.conv-item.active{background:#fff;border-color:var(--accent);box-shadow:var(--shadow)}.conv-item .title{font-weight:500;font-size:14px;color:var(--title)}.conv-item .preview{color:var(--muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat{display:flex;flex-direction:column;min-width:0;background:transparent;position:relative}.chat-empty{flex:1;display:flex;align-items:center;justify-content:center;color:var(--muted);flex-direction:column;gap:8px}.chat-empty:before{content:"💬";font-size:48px;opacity:.5}.chat-head{padding:16px 20px;border-bottom:1px solid var(--border);font-weight:500;font-family:ZCOOL,sans-serif;font-size:18px;color:var(--title);display:flex;align-items:center;justify-content:space-between;background:#ffffff80}.messages{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:14px;position:relative}.msg{max-width:70%;padding:11px 15px;border-radius:var(--radius-bubble);font-size:14px;line-height:1.5;word-break:break-word;position:relative;animation:msgIn .35s ease both;box-shadow:var(--shadow)}@keyframes msgIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.msg.me{align-self:flex-end;background:linear-gradient(135deg,var(--bubble-me-1),var(--bubble-me-2));color:#6b4a55;border-bottom-right-radius:6px}.msg.me:after{content:"🎀";position:absolute;right:-6px;bottom:-8px;font-size:14px}.msg.other{align-self:flex-start;background:linear-gradient(135deg,var(--bubble-other-1),var(--bubble-other-2));color:#4a6072;border-bottom-left-radius:6px}.msg.other:before{content:"⭐";position:absolute;left:-6px;bottom:-8px;font-size:13px}.msg.sys{align-self:center;background:linear-gradient(135deg,var(--bubble-sys-1),var(--bubble-sys-2));color:#8a7a3a;font-size:12px;border-radius:14px;box-shadow:none}.msg .meta{font-size:11px;color:#00000059;margin-top:5px;font-family:Quicksand,sans-serif}.msg img{max-width:240px;border-radius:12px;display:block}.msg a.file{color:#d36a93;text-decoration:underline}.composer{display:flex;gap:10px;padding:14px 18px;border-top:1px solid var(--border);align-items:center;background:#ffffff80}.composer input[type=text]{flex:1;padding:12px 16px;border-radius:18px;border:1.5px solid var(--accent);background:#fff;color:var(--text);outline:none;transition:box-shadow .25s,border-color .25s}.composer input[type=text]:focus{border-color:var(--accent-deep);box-shadow:0 0 0 5px #ffd6e04d}.composer button.send{padding:12px 22px;border:none;border-radius:18px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-weight:500;font-family:ZCOOL,sans-serif;font-size:15px;transition:transform .15s,box-shadow .25s;box-shadow:var(--shadow)}.composer button.send:hover{transform:scale(1.03);box-shadow:var(--shadow-strong)}.composer button.send:active{transform:scale(.96)}.composer label.attach{padding:12px 16px;border-radius:18px;border:1.5px solid var(--accent);color:var(--accent-deep);cursor:pointer;transition:transform .15s,background .2s}.composer label.attach:hover{background:#ffd6e033;transform:scale(1.05)}.members{background:linear-gradient(180deg,#eaf6ff,#f8f2f4);border-left:1px solid var(--border);display:flex;flex-direction:column;min-width:0}.members-head{padding:16px;font-family:ZCOOL,sans-serif;font-size:16px;color:var(--title);border-bottom:1px solid var(--border)}.members-list{overflow-y:auto;flex:1;padding:10px}.member-row{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:14px;transition:background .2s}.member-row:hover{background:#ffffffb3}.member-avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--bubble-other-2));display:flex;align-items:center;justify-content:center;color:#fff;font-family:ZCOOL,sans-serif;font-size:14px;flex-shrink:0}.member-name{font-size:13px;color:var(--text);font-weight:500}.member-tag{font-size:11px;color:var(--muted)}#particles-bg{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;pointer-events:none}.modal-mask{position:fixed;top:0;right:0;bottom:0;left:0;background:#3c283240;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:flex;align-items:center;justify-content:center;z-index:10;animation:fadeIn .25s ease both}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{width:400px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-strong);animation:popIn .3s cubic-bezier(.2,.9,.3,1.3) both}@keyframes popIn{0%{opacity:0;transform:scale(.9) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}.modal h3{margin:0 0 16px;font-family:ZCOOL,sans-serif;color:var(--title)}.modal input[type=text]{width:100%;padding:11px 14px;margin-bottom:12px;border-radius:14px;border:1.5px solid var(--border);background:#fff;color:var(--text)}.modal input[type=text]:focus{border-color:var(--accent);box-shadow:0 0 0 4px #ffd6e040}.user-row{display:flex;align-items:center;gap:10px;padding:9px;border-radius:12px;cursor:pointer;transition:background .2s}.user-row:hover{background:#ffd6e026}.user-row.selected{background:#ffd6e04d;outline:1.5px solid var(--accent)}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:8px}.modal-actions button{padding:10px 18px;border-radius:12px;border:1px solid var(--border);background:transparent;color:var(--text);transition:transform .15s}.modal-actions button:active{transform:scale(.96)}.modal-actions button.primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));border-color:transparent;color:#fff;font-family:ZCOOL,sans-serif}.theme-toggle{position:fixed;bottom:18px;right:18px;z-index:20;width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2));border:none;color:#fff;font-size:20px;box-shadow:var(--shadow-strong);cursor:pointer;transition:transform .2s}.theme-toggle:hover{transform:scale(1.1) rotate(15deg)}.theme-toggle:active{transform:scale(.92)}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-thumb{background:var(--accent);border-radius:8px}::-webkit-scrollbar-track{background:transparent}