:root{
  --bg:#f4f6fb;--panel:#ffffff;--panel2:#f8f9fd;--text:#171a2b;--muted:#747a91;--border:#e5e8f0;
  --brand:#5b5cf0;--brand2:#7a5cf0;--brand-soft:#ececff;--danger:#e5484d;--success:#20a464;--shadow:0 14px 40px rgba(31,35,62,.12);
}
body.dark{--bg:#0b0e18;--panel:#121726;--panel2:#171d2e;--text:#f5f7ff;--muted:#9aa3bb;--border:#252d42;--brand-soft:#24244d;--shadow:0 18px 50px rgba(0,0,0,.35)}
*{box-sizing:border-box}html,body{height:100%;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}button,input,textarea,select{font:inherit}button{cursor:pointer}a{color:var(--brand)}.hidden{display:none!important}.muted{color:var(--muted)}code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.center-screen{min-height:100%;display:grid;place-items:center;padding:24px}.setup-card{max-width:620px;background:var(--panel);border:1px solid var(--border);border-radius:24px;padding:32px;box-shadow:var(--shadow)}.setup-card pre{white-space:pre-wrap;background:var(--panel2);padding:16px;border-radius:14px;border:1px solid var(--border)}
.logo{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;color:white;background:linear-gradient(135deg,var(--brand),var(--brand2));font-weight:800;box-shadow:0 8px 24px rgba(91,92,240,.28)}.logo.big{width:72px;height:72px;font-size:30px;border-radius:24px}.hero-logo{width:88px;height:88px;font-size:36px;border-radius:28px}
.auth-shell{min-height:100%;display:grid;grid-template-columns:minmax(340px,1.1fr) minmax(360px,.9fr);background:radial-gradient(circle at 20% 20%,rgba(91,92,240,.14),transparent 35%),var(--bg)}.auth-hero{padding:10vw;display:flex;flex-direction:column;justify-content:center}.auth-hero h1{font-size:clamp(38px,6vw,70px);margin:18px 0 6px;letter-spacing:-.04em}.auth-hero p{font-size:20px;color:var(--muted)}.auth-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.auth-points span{padding:9px 13px;border:1px solid var(--border);background:var(--panel);border-radius:999px;color:var(--muted)}.auth-card{align-self:center;justify-self:center;width:min(460px,90%);background:var(--panel);border:1px solid var(--border);border-radius:26px;padding:28px;box-shadow:var(--shadow)}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;background:var(--panel2);border-radius:14px;padding:4px;margin-bottom:24px}.auth-tabs button{border:0;background:transparent;padding:12px;border-radius:11px;color:var(--muted)}.auth-tabs button.active{background:var(--panel);color:var(--text);box-shadow:0 4px 16px rgba(0,0,0,.07)}.stack{display:grid;gap:16px}.stack h2{margin:0 0 4px}.stack label{display:grid;gap:7px;font-size:14px;color:var(--muted)}input,textarea,select{width:100%;border:1px solid var(--border);background:var(--panel2);color:var(--text);padding:12px 14px;border-radius:12px;outline:none}.stack input:focus,.stack textarea:focus,#messageInput:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(91,92,240,.12)}.password-wrap{display:flex;gap:8px}.password-wrap input{flex:1}.primary{border:0;background:linear-gradient(135deg,var(--brand),var(--brand2));color:white;padding:12px 16px;border-radius:12px;font-weight:700}.ghost{border:1px solid var(--border);background:var(--panel);color:var(--text);border-radius:10px;padding:0 12px}.link-btn{border:0;background:transparent;color:var(--brand);padding:0;text-align:left}
.app-shell{height:100%;display:grid;grid-template-columns:360px 1fr;overflow:hidden}.sidebar{background:var(--panel);border-right:1px solid var(--border);display:flex;flex-direction:column;min-width:0}.side-top{display:flex;align-items:center;justify-content:space-between;padding:18px 18px 12px}.brand{display:flex;align-items:center;gap:10px}.brand>div{display:grid}.brand small{font-size:11px;color:var(--success)}.top-actions,.chat-tools{display:flex;gap:8px}.icon-btn{width:40px;height:40px;border:1px solid var(--border);background:var(--panel2);color:var(--text);border-radius:12px;display:grid;place-items:center}.icon-btn:hover{background:var(--brand-soft);border-color:transparent}.primary-soft{color:var(--brand);background:var(--brand-soft)}.me-card{margin:0 16px 12px;background:var(--panel2);border:1px solid var(--border);border-radius:16px;padding:12px;display:flex;align-items:center;gap:12px}.me-card .copy{min-width:0}.me-card b,.me-card small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.me-card small{color:var(--muted)}.avatar{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,#8f91ff,#5b5cf0);display:grid;place-items:center;color:white;font-weight:800;overflow:hidden;flex:0 0 auto}.avatar img{width:100%;height:100%;object-fit:cover}.avatar.lg{width:78px;height:78px;border-radius:24px;font-size:24px}.search-row{display:flex;gap:8px;padding:0 16px 10px}.search-row input{flex:1}.search-panel{margin:0 16px 10px;border:1px solid var(--border);background:var(--panel);border-radius:14px;max-height:260px;overflow:auto;box-shadow:var(--shadow);z-index:5}.search-item{display:flex;align-items:center;gap:10px;padding:10px;border-bottom:1px solid var(--border)}.search-item:last-child{border-bottom:0}.search-item:hover{background:var(--panel2)}.filters{display:flex;gap:6px;padding:0 16px 10px;overflow:auto}.filters button{border:0;background:var(--panel2);color:var(--muted);padding:7px 10px;border-radius:999px;white-space:nowrap}.filters button.active{background:var(--brand-soft);color:var(--brand)}.chat-list{flex:1;overflow:auto;padding:0 8px 12px}.chat-row{display:flex;align-items:center;gap:11px;padding:10px;border-radius:14px;position:relative}.chat-row:hover,.chat-row.active{background:var(--panel2)}.chat-row.active{outline:1px solid var(--border)}.chat-row .content{min-width:0;flex:1}.chat-row .line1{display:flex;align-items:center;justify-content:space-between;gap:10px}.chat-row .line1 b,.chat-row p{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-row p{margin:4px 0 0;color:var(--muted);font-size:13px}.chat-row time{font-size:11px;color:var(--muted);white-space:nowrap}.badge{min-width:20px;height:20px;border-radius:999px;background:var(--brand);color:white;font-size:11px;display:grid;place-items:center;padding:0 6px}.pin{font-size:11px;color:var(--muted)}.side-bottom{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--border);padding:10px;gap:6px}.side-bottom button{border:0;background:transparent;color:var(--text);padding:10px;border-radius:10px;text-align:left}.side-bottom button:hover{background:var(--panel2)}.danger-text{color:var(--danger)!important}
.main-pane{min-width:0;background:radial-gradient(circle at 70% 30%,rgba(91,92,240,.07),transparent 30%),var(--bg);position:relative}.empty-state{height:100%;display:grid;place-items:center;align-content:center;text-align:center;color:var(--muted);padding:20px}.empty-state h2{color:var(--text);margin:18px 0 6px}.chat-view{height:100%;display:grid;grid-template-rows:auto auto 1fr auto auto auto;position:relative}.chat-header{height:72px;background:color-mix(in srgb,var(--panel) 94%,transparent);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px;padding:0 18px;z-index:2}.chat-head-copy{display:grid;min-width:0;flex:1}.chat-head-copy b,.chat-head-copy small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-head-copy small{color:var(--muted);font-size:12px}.message-search{display:flex;gap:8px;padding:8px 16px;background:var(--panel);border-bottom:1px solid var(--border)}.message-search button{width:40px;border:0;background:transparent;color:var(--muted)}.messages{overflow:auto;padding:24px max(18px,6vw);scroll-behavior:smooth}.date-sep{text-align:center;margin:18px 0;color:var(--muted);font-size:12px}.date-sep span{background:var(--panel);border:1px solid var(--border);padding:6px 10px;border-radius:999px}.message{max-width:min(680px,78%);margin:8px 0;display:flex;flex-direction:column;align-items:flex-start}.message.mine{margin-left:auto;align-items:flex-end}.bubble{background:var(--panel);border:1px solid var(--border);border-radius:18px 18px 18px 5px;padding:10px 12px;box-shadow:0 4px 14px rgba(31,35,62,.05);min-width:92px;position:relative}.message.mine .bubble{background:linear-gradient(135deg,var(--brand),var(--brand2));border-color:transparent;color:white;border-radius:18px 18px 5px 18px}.sender-name{font-size:11px;font-weight:700;color:var(--brand);margin-bottom:4px}.message.mine .sender-name{display:none}.reply-mini{border-left:3px solid currentColor;padding-left:8px;opacity:.72;font-size:12px;margin-bottom:6px;max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.bubble .text{white-space:pre-wrap;word-break:break-word;line-height:1.42}.bubble .meta{display:flex;gap:5px;align-items:center;justify-content:flex-end;font-size:10px;opacity:.68;margin-top:6px}.attachment-image{max-width:min(420px,65vw);max-height:420px;border-radius:13px;display:block;margin-bottom:7px}.file-card,.voice-card{display:flex;gap:10px;align-items:center;min-width:220px}.file-card .file-icon{font-size:28px}.file-card a{color:inherit;text-decoration:none;display:grid}.file-card small{opacity:.7}.voice-card audio{max-width:260px}.reactions{display:flex;gap:4px;flex-wrap:wrap;margin-top:4px}.reaction-chip{border:1px solid var(--border);background:var(--panel);color:var(--text);border-radius:999px;padding:3px 7px;font-size:12px}.message.mine .reaction-chip{background:var(--panel2)}.scroll-down{position:absolute;right:24px;bottom:88px;border:0;background:var(--panel);color:var(--text);border-radius:999px;padding:9px 12px;box-shadow:var(--shadow);z-index:4}.reply-bar{margin:0 14px;padding:9px 12px;background:var(--panel2);border:1px solid var(--border);border-bottom:0;border-radius:13px 13px 0 0;display:flex;align-items:center;justify-content:space-between}.reply-bar>div{display:grid;min-width:0}.reply-bar small{color:var(--muted)}.reply-bar span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:60vw}.reply-bar button{border:0;background:transparent;color:var(--muted);font-size:22px}.typing-bar{min-height:20px;padding:0 20px 4px;color:var(--muted);font-size:12px}.composer{margin:0 14px 14px;background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:8px;display:flex;align-items:flex-end;gap:8px;box-shadow:0 10px 28px rgba(31,35,62,.08)}.composer textarea{border:0;background:transparent;resize:none;min-height:40px;max-height:140px;padding:10px 6px;box-shadow:none!important}.send-btn{width:42px;height:42px;border:0;border-radius:13px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:white}.emoji-panel{position:absolute;bottom:78px;left:26px;width:300px;max-height:220px;overflow:auto;background:var(--panel);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);padding:10px;display:flex;flex-wrap:wrap;gap:4px;z-index:5}.emoji-panel button{border:0;background:transparent;font-size:22px;padding:7px;border-radius:8px}.emoji-panel button:hover{background:var(--panel2)}.recording-bar{position:absolute;left:14px;right:14px;bottom:14px;background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:12px 14px;display:flex;align-items:center;gap:12px;z-index:6;box-shadow:var(--shadow)}.record-dot{width:10px;height:10px;border-radius:50%;background:var(--danger);animation:pulse 1s infinite}.recording-bar button{border:0;background:transparent;color:var(--text);padding:8px 10px;border-radius:10px}.recording-bar .primary{margin-left:auto;color:white;background:var(--brand)}@keyframes pulse{50%{opacity:.3}}
.modal{position:fixed;inset:0;background:rgba(7,9,17,.55);display:grid;place-items:center;padding:18px;z-index:30;backdrop-filter:blur(5px)}.modal-card{position:relative;width:min(620px,100%);max-height:88vh;overflow:auto;background:var(--panel);border:1px solid var(--border);border-radius:22px;padding:24px;box-shadow:var(--shadow)}.modal-close{position:absolute;right:14px;top:14px;width:36px;height:36px;border:0;border-radius:10px;background:var(--panel2);color:var(--text);font-size:20px}.modal h2,.modal h3{margin-top:0}.form-grid{display:grid;gap:14px}.form-grid label{display:grid;gap:6px;color:var(--muted);font-size:13px}.modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:18px}.danger-btn{border:0;background:var(--danger);color:white;padding:10px 14px;border-radius:11px}.secondary{border:1px solid var(--border);background:var(--panel2);color:var(--text);padding:10px 14px;border-radius:11px}.member-list{display:grid;gap:8px}.member-row{display:flex;align-items:center;gap:10px;padding:9px;border:1px solid var(--border);border-radius:12px}.member-row .member-copy{flex:1;min-width:0}.member-row small{color:var(--muted)}.member-check{display:flex!important;grid-template-columns:auto 1fr!important;align-items:center;gap:9px!important;padding:8px;border:1px solid var(--border);border-radius:10px}.member-check input{width:auto}.context-menu{display:grid;gap:6px}.context-menu button{border:0;background:var(--panel2);color:var(--text);padding:11px 12px;border-radius:10px;text-align:left}.context-menu button:hover{background:var(--brand-soft)}.context-menu .danger-text{color:var(--danger)}
#toast{position:fixed;right:20px;top:20px;z-index:100;display:grid;gap:8px}.toast{background:var(--text);color:var(--panel);padding:11px 14px;border-radius:12px;box-shadow:var(--shadow);max-width:360px}.toast.error{background:var(--danger);color:#fff}.toast.success{background:var(--success);color:#fff}
.status-dot{width:9px;height:9px;border-radius:50%;background:var(--success);border:2px solid var(--panel);position:absolute;right:1px;bottom:1px}.avatar-wrap{position:relative}.mobile-only{display:none}
@media(max-width:820px){.auth-shell{grid-template-columns:1fr}.auth-hero{display:none}.auth-card{margin:auto}.app-shell{grid-template-columns:1fr}.sidebar{position:absolute;inset:0;z-index:10}.main-pane{position:absolute;inset:0}.app-shell.chat-open .sidebar{display:none}.app-shell:not(.chat-open) .main-pane{display:none}.mobile-only{display:grid}.messages{padding:18px 12px}.message{max-width:88%}.chat-header{padding:0 10px}.composer{margin:0 8px 8px}.emoji-panel{left:10px;bottom:72px;width:calc(100% - 20px)}.side-bottom{grid-template-columns:1fr 1fr}.auth-shell{padding:18px}.auth-card{width:100%}}

.google-btn{
width:100%;
display:flex;
align-items:center;
justify-content:center;
gap:10px;
padding:12px 16px;
margin-bottom:14px;
border:1px solid var(--border);
border-radius:12px;
background:var(--panel);
color:var(--text);
font-weight:700;
}

.google-btn:hover{
background:var(--panel2);
}

.google-g{
width:24px;
height:24px;
border-radius:50%;
display:grid;
place-items:center;
font-weight:900;
background:white;
color:#4285F4;
border:1px solid #ddd;
}

.auth-divider{
display:flex;
align-items:center;
gap:10px;
margin:8px 0 18px;
color:var(--muted);
font-size:12px;
}

.auth-divider::before,
.auth-divider::after{
content:"";
height:1px;
background:var(--border);
flex:1;
}