:root{--bg:#fff;--bg-2:#f1f3f6;--bg-chat:#dfe7ee;--text:#111418;--muted:#707a85;--border:#e3e6ea;--accent:#3390ec;--accent-text:#fff;--bubble:#fff;--bubble-mine:#e1f7d5;--bubble-mine-meta:#4fae4e;--danger:#e53935;--success:#43a047;--hover:#0000000d;--shadow:0 1px 2px #0000001f;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#17212b;--bg-2:#0e1621;--bg-chat:#0e1621;--text:#f5f5f5;--muted:#8a9aa9;--border:#253241;--accent:#5eb5f7;--accent-text:#0e1621;--bubble:#182533;--bubble-mine:#2b5278;--bubble-mine-meta:#7db8ea;--hover:#ffffff0f;--shadow:none;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg-2);color:var(--text);-webkit-tap-highlight-color:transparent;overscroll-behavior:none;font:15px/1.4 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}button{font:inherit;color:inherit;cursor:pointer}button:disabled{cursor:default;opacity:.5}input,textarea{font:inherit;color:inherit}a{color:var(--accent)}.muted{color:var(--muted)}.accent{color:var(--accent)}.icon-btn{width:40px;height:40px;color:var(--muted);background:0 0;border:0;border-radius:50%;flex:none;justify-content:center;align-items:center;display:inline-flex}.icon-btn:hover:not(:disabled){background:var(--hover)}.btn-primary,.btn-secondary,.btn-danger,.btn-join{border:0;border-radius:10px;padding:12px 16px;font-weight:600}.btn-primary{background:var(--accent);color:var(--accent-text)}.btn-secondary{background:var(--bg-2)}.btn-danger{color:var(--danger);background:0 0;width:100%;margin-top:8px}.btn-join{background:var(--success);color:#fff;border-radius:20px;align-items:center;gap:6px;padding:8px 12px;font-size:14px;display:inline-flex}input[type=text],input[type=password],input:not([type]){border:1px solid var(--border);background:var(--bg);border-radius:10px;outline:none;width:100%;padding:12px 14px}input:focus{border-color:var(--accent)}.avatar{color:#fff;-webkit-user-select:none;user-select:none;border-radius:50%;flex:none;justify-content:center;align-items:center;font-weight:600;display:flex;position:relative}.avatar-online{border:2px solid var(--bg);background:#4fce5d;border-radius:50%;width:28%;height:28%;position:absolute;bottom:0;right:0}.splash{background:var(--bg);flex-direction:column;justify-content:center;align-items:center;gap:16px;height:100%;display:flex}.splash img{border-radius:22px;width:96px;height:96px}.login{background:var(--bg-2);justify-content:center;align-items:center;height:100%;padding:16px;display:flex}.login-card{background:var(--bg);width:100%;max-width:360px;box-shadow:var(--shadow);border-radius:16px;flex-direction:column;gap:12px;padding:28px 24px;display:flex}.login-card h1{text-align:center;margin:0 0 8px;font-size:22px}.login-logo{border-radius:18px;width:80px;height:80px;margin:0 auto}.form-error{color:var(--danger);font-size:14px}.layout{height:100%;display:flex;overflow:hidden}.chatlist{background:var(--bg);border-right:1px solid var(--border);flex-direction:column;flex:none;width:340px;display:flex}.chatview{background:var(--bg-chat);flex-direction:column;flex:1;min-width:0;display:flex}.placeholder{color:var(--muted);background:var(--bg-chat);flex:1;justify-content:center;align-items:center;display:flex}.icon-btn.back{display:none}@media (width<=720px){.chatlist{border:0;width:100%}.layout.has-chat .chatlist,.layout:not(.has-chat) .chatview,.placeholder{display:none}.icon-btn.back{display:inline-flex}}.topbar{min-height:56px;padding:8px 8px 8px 12px;padding-top:max(8px, env(safe-area-inset-top));background:var(--bg);border-bottom:1px solid var(--border);flex:none;align-items:center;gap:8px;display:flex}.topbar-title{flex:1;min-width:0;font-size:16px;font-weight:600}.topbar-title>div{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.topbar-sub{color:var(--muted);font-size:13px;font-weight:400}.chatlist-items{padding:4px 6px;padding-bottom:env(safe-area-inset-bottom);flex:1;overflow-y:auto}.chat-item{text-align:left;background:0 0;border:0;border-radius:12px;align-items:center;gap:12px;width:100%;padding:8px 10px;display:flex}.chat-item:hover{background:var(--hover)}.chat-item.active{background:var(--accent);color:var(--accent-text)}.chat-item.active .chat-item-time,.chat-item.active .chat-item-preview,.chat-item.active .accent{color:inherit;opacity:.85}.chat-item-body{flex:1;min-width:0}.chat-item-row{align-items:center;gap:6px;display:flex}.chat-item-title{text-overflow:ellipsis;white-space:nowrap;flex:1;font-weight:600;overflow:hidden}.chat-item-time{color:var(--muted);font-size:12px}.chat-item-preview{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:14px;overflow:hidden}.badge{background:var(--accent);min-width:22px;height:22px;color:var(--accent-text);border-radius:11px;justify-content:center;align-items:center;padding:0 7px;font-size:12px;font-weight:600;display:inline-flex}.chat-item.active .badge{background:var(--accent-text);color:var(--accent)}.call-dot{color:var(--success);display:inline-flex}.messages{overflow-anchor:none;flex:1;padding:8px 10px 4px;overflow-y:auto}.empty,.loading-older{text-align:center;color:var(--muted);padding:24px;font-size:14px}.loading-older{padding:8px}.day-sep{text-align:center;margin:10px 0}.day-sep span{color:#fff;background:#00000040;border-radius:12px;padding:3px 10px;font-size:13px;display:inline-block}.msg-row{margin:2px 0;display:flex}.msg-row.mine{justify-content:flex-end}.bubble{background:var(--bubble);max-width:min(78%,520px);box-shadow:var(--shadow);overflow-wrap:anywhere;border-radius:14px;padding:6px 10px}.bubble.mine{background:var(--bubble-mine)}.bubble.media{padding:3px}.bubble.media .msg-meta{float:right;color:#fff;background:#00000073;border-radius:10px;margin-top:-26px;margin-right:6px;padding:1px 6px;position:relative}.bubble.failed{opacity:.85;outline:1px solid var(--danger)}.msg-author{margin-bottom:2px;font-size:13px;font-weight:600}.msg-text{white-space:pre-wrap}.msg-meta{color:var(--muted);-webkit-user-select:none;user-select:none;justify-content:flex-end;align-items:center;gap:3px;margin-top:1px;font-size:11px;display:flex}.bubble.mine .msg-meta{color:var(--bubble-mine-meta)}.msg-meta .read{color:var(--accent);display:inline-flex}.msg-error{color:var(--danger);margin-top:4px;font-size:12px}.msg-error button{color:var(--accent);background:0 0;border:0;padding:0;text-decoration:underline}.msg-image{cursor:zoom-in;background:var(--hover);border-radius:11px;min-width:120px;max-width:100%;min-height:60px;max-height:360px;display:block}video.msg-image{cursor:default}audio{max-width:100%}.msg-file{color:inherit;align-items:center;gap:10px;padding:4px 0;text-decoration:none;display:flex}.msg-file-icon{background:var(--accent);width:42px;height:42px;color:var(--accent-text);border-radius:50%;flex:none;justify-content:center;align-items:center;display:flex}.msg-file-info{flex-direction:column;min-width:0;display:flex}.msg-file-name{text-overflow:ellipsis;white-space:nowrap;font-weight:500;overflow:hidden}.msg-file-size{color:var(--muted);font-size:12px}.composer{padding:6px;padding-bottom:max(6px, env(safe-area-inset-bottom));background:var(--bg);border-top:1px solid var(--border);flex:none;align-items:flex-end;gap:4px;display:flex}.composer textarea{resize:none;background:0 0;border:0;outline:none;flex:1;max-height:160px;padding:10px 6px;font-size:16px;line-height:20px}.icon-btn.send{color:var(--accent)}.lightbox{z-index:50;background:#000000eb;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.lightbox img{object-fit:contain;max-width:100%;max-height:100%}.lightbox-actions{top:max(8px, env(safe-area-inset-top));gap:4px;display:flex;position:absolute;right:8px}.lightbox-actions .icon-btn{color:#fff}.call{z-index:40;color:#fff;background:#101418;flex-direction:column;display:flex;position:fixed;inset:0}.call-header{text-align:center;padding:12px;padding-top:max(12px, env(safe-area-inset-top))}.call-title{font-size:18px;font-weight:600}.call-sub{opacity:.7;font-size:14px}.call-grid{flex:1;gap:6px;min-height:0;padding:6px;display:grid}.call-grid.n2{grid-template-rows:1fr 1fr}.call-grid.n3,.call-grid.n4{grid-template-rows:1fr 1fr;grid-template-columns:1fr 1fr}@media (aspect-ratio>=1){.call-grid.n2{grid-template-rows:none;grid-template-columns:1fr 1fr}}.tile{background:#1d242c;border-radius:12px;justify-content:center;align-items:center;min-height:0;display:flex;position:relative;overflow:hidden}.tile video{object-fit:cover;width:100%;height:100%}.call-grid.n0 .tile,.call-grid.n1 .tile{background:#101418}.call-grid.n1 .tile video{object-fit:contain}.tile video.hidden-video{opacity:0;width:1px;height:1px;position:absolute}.tile-name{background:#00000080;border-radius:8px;padding:2px 8px;font-size:13px;position:absolute;bottom:8px;left:8px}.call-self{right:12px;bottom:calc(100px + env(safe-area-inset-bottom));object-fit:cover;background:#000;border-radius:12px;width:110px;height:150px;position:absolute;box-shadow:0 2px 10px #00000080}.call-self.off{opacity:.3}.call-controls{padding:16px;padding-bottom:max(20px, env(safe-area-inset-bottom));justify-content:center;gap:18px;display:flex}.round{color:#fff;background:#ffffff26;border:0;border-radius:50%;flex:none;justify-content:center;align-items:center;width:56px;height:56px;display:inline-flex}.round.off{color:#101418;background:#fff}.round.danger{background:var(--danger);color:#fff}.round.accept{background:var(--success);color:#fff}.round.small{width:44px;height:44px}.incoming{z-index:45;left:50%;top:max(12px, env(safe-area-inset-top));color:#fff;background:#1d242c;border-radius:18px;align-items:center;gap:10px;width:min(440px,100% - 16px);padding:12px;animation:.25s ease-out slide-in;display:flex;position:fixed;transform:translate(-50%);box-shadow:0 6px 24px #0006}.incoming-text{flex:1;min-width:0}.incoming-title{text-overflow:ellipsis;white-space:nowrap;font-weight:600;overflow:hidden}.incoming-sub{opacity:.75;text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}@keyframes slide-in{0%{transform:translate(-50%,-120%)}}.sheet-backdrop{z-index:30;background:#00000073;justify-content:center;align-items:flex-end;display:flex;position:fixed;inset:0}@media (width>=721px){.sheet-backdrop{align-items:center}}.sheet{background:var(--bg);width:100%;max-width:440px;max-height:92%;padding:8px 20px 20px;padding-bottom:max(20px, env(safe-area-inset-bottom));border-radius:18px 18px 0 0;overflow-y:auto}@media (width>=721px){.sheet{border-radius:18px}}.sheet-header{justify-content:space-between;align-items:center;display:flex}.sheet-header h2{margin:8px 0;font-size:20px}.sheet h3{color:var(--accent);margin:20px 0 8px;font-size:14px}.profile{align-items:center;gap:14px;margin-top:8px;display:flex}.profile-name{font-size:18px;font-weight:600}.switch-row{justify-content:space-between;align-items:center;gap:12px;padding:6px 0;display:flex}.switch-row input{width:22px;height:22px;accent-color:var(--accent)}.hint{color:var(--muted);margin:6px 0 0;font-size:13px}.pw-form{flex-direction:column;gap:8px;display:flex}.toast{z-index:60;left:50%;bottom:calc(80px + env(safe-area-inset-bottom));color:#fff;text-align:center;background:#14181ceb;border-radius:12px;max-width:calc(100% - 32px);padding:10px 16px;font-size:14px;position:fixed;transform:translate(-50%)}