:root{--bg: #f4f5f7;--panel: #ffffff;--sidebar: #fafafb;--border: #e4e6ea;--border-soft: #eef0f3;--text: #1f2328;--dim: #6b7280;--faint: #9aa2ad;--accent: #4a90d9;--accent-text: #ffffff;--bubble-other: #ffffff;--danger: #d64545;--hover: rgba(0, 0, 0, .04);--shadow: 0 1px 2px rgba(0, 0, 0, .06), 0 4px 16px rgba(0, 0, 0, .04)}@media(prefers-color-scheme:dark){:root{--bg: #141619;--panel: #1b1e23;--sidebar: #171a1e;--border: #2a2f36;--border-soft: #23272d;--text: #e6e8ea;--dim: #98a1ac;--faint: #6f7883;--accent: #4a8fd4;--accent-text: #ffffff;--bubble-other: #262b32;--danger: #e06a6a;--hover: rgba(255, 255, 255, .05);--shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .2)}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font:15px/1.55 -apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft 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button{flex:1;padding:7px;border-radius:8px;color:var(--dim);font-size:14px}.tabs button.active{background:var(--panel);color:var(--text);font-weight:600;box-shadow:0 1px 2px #00000014}.auth-card label{display:flex;flex-direction:column;gap:5px;font-size:13px;color:var(--dim)}.auth-card input{font:inherit;padding:10px 12px;border-radius:9px;border:1px solid var(--border);background:var(--bg);color:var(--text);outline:none}.auth-card input:focus{border-color:var(--accent);background:var(--panel)}.auth-error{background:color-mix(in srgb,var(--danger) 12%,transparent);color:var(--danger);border-radius:8px;padding:8px 10px;font-size:13px}button.primary{margin-top:4px;padding:11px;border-radius:10px;background:var(--accent);color:var(--accent-text);font-weight:600}button.primary:disabled{opacity:.6;cursor:default}.app{height:100%;display:flex;background:var(--panel)}.sidebar{width:280px;flex:none;border-right:1px solid 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var(--sidebar)}.dot.on{background:#3fa35f}.dot.off{background:var(--faint)}.main{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0;position:relative}.chat-header{display:flex;align-items:center;gap:10px;padding:11px 16px;border-bottom:1px solid var(--border-soft);background:var(--panel)}.chat-name{font-weight:600;font-size:15px}.chat-sub{font-size:12px;color:var(--dim)}.back-btn{display:none;font-size:26px;line-height:1;width:30px;color:var(--dim)}.conn-banner{background:color-mix(in srgb,var(--danger) 12%,transparent);color:var(--danger);font-size:12.5px;text-align:center;padding:5px}.message-list{flex:1;overflow-y:auto;padding:12px 0 16px;background:var(--bg);min-height:0;overscroll-behavior:contain}.load-more,.list-top,.empty{text-align:center;padding:8px 0 14px;font-size:12.5px;color:var(--faint)}.load-more button{color:var(--accent);font-size:12.5px}.empty{padding:40px 0}.divider{text-align:center;font-size:11.5px;color:var(--faint);margin:14px 0 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.main,.app.show-chat .sidebar{display:none}.back-btn{display:block}.row-content{max-width:82%}}