:root{--bg:#0b1117;--panel:#101820;--panel2:#15212b;--panel3:#1b2a36;--text:#edf4f7;--muted:#8fa4b0;--line:#263845;--accent:#25a67a;--accent2:#1b7f5d;--danger:#e46b6b;--bubble:#182630;--mine:#1b4b3f;--shadow:0 18px 60px rgba(0,0,0,.35)}
*{box-sizing:border-box}html,body{height:100%;margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}button,input,textarea{font:inherit}button{cursor:pointer}.hidden{display:none!important}.app{height:100dvh;display:grid;grid-template-columns:360px 1fr;overflow:hidden}.sidebar{background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:0}.side-header,.chat-header{height:64px;display:flex;align-items:center;padding:0 16px;border-bottom:1px solid var(--line);flex:0 0 auto}.side-header{justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-weight:700}.brand.big{font-size:22px;margin-bottom:22px}.brand small{display:block;color:var(--muted);font-size:12px;font-weight:500}.brand-mark,.empty-logo{display:grid;place-items:center;background:linear-gradient(145deg,var(--accent),#146247);color:white;font-weight:900}.brand-mark{width:34px;height:34px;border-radius:11px}.empty-logo{width:76px;height:76px;border-radius:24px;font-size:34px;box-shadow:var(--shadow)}.icon-btn{border:0;background:transparent;color:var(--muted);font-size:22px;padding:7px 10px;border-radius:10px}.icon-btn:hover{background:var(--panel3);color:var(--text)}.side-actions{padding:12px;display:grid;grid-template-columns:1fr auto;gap:8px;border-bottom:1px solid var(--line)}input,textarea{border:1px solid var(--line);background:var(--panel2);color:var(--text);outline:none;border-radius:12px;padding:11px 13px;min-width:0}input:focus,textarea:focus{border-color:var(--accent)}#chat-search{grid-column:1/-1}.primary{border:0;background:var(--accent);color:white;border-radius:12px;padding:11px 15px;font-weight:700}.primary:hover{background:var(--accent2)}.chat-list{overflow:auto;flex:1}.chat-item{display:grid;grid-template-columns:48px 1fr auto;gap:10px;padding:11px 13px;align-items:center;border-bottom:1px solid rgba(38,56,69,.55);cursor:pointer}.chat-item:hover,.chat-item.active{background:var(--panel2)}.avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--panel3);color:#c8e7dc;font-weight:800;flex:0 0 auto}.chat-meta{min-width:0}.chat-meta strong,.chat-meta small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-meta small{color:var(--muted);margin-top:4px}.chat-tail{text-align:right;color:var(--muted);font-size:11px}.badge{display:inline-grid;place-items:center;min-width:22px;height:22px;border-radius:12px;background:var(--accent);color:white;font-size:11px;font-weight:800;margin-top:5px;padding:0 6px}.chat-pane{min-width:0;background:radial-gradient(circle at 80% 20%,rgba(37,166,122,.08),transparent 25%),var(--bg);height:100dvh}.empty-chat{height:100%;display:grid;place-items:center;align-content:center;gap:16px;color:var(--muted)}.chat-view{height:100%;display:flex;flex-direction:column}.chat-header{background:rgba(16,24,32,.95);backdrop-filter:blur(10px)}.chat-head-text{min-width:0;margin-left:10px}.chat-head-text strong,.chat-head-text small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-head-text small{color:var(--muted);margin-top:2px}.messages{flex:1;overflow:auto;padding:22px max(18px,calc((100% - 920px)/2));display:flex;flex-direction:column;gap:8px;scroll-behavior:smooth}.day-sep{align-self:center;color:var(--muted);background:rgba(16,24,32,.78);padding:5px 10px;border-radius:12px;font-size:12px;margin:8px}.message{max-width:min(74%,720px);align-self:flex-start;background:var(--bubble);border:1px solid rgba(255,255,255,.03);padding:8px 10px;border-radius:14px 14px 14px 4px;box-shadow:0 3px 12px rgba(0,0,0,.09);position:relative}.message.mine{align-self:flex-end;background:var(--mine);border-radius:14px 14px 4px 14px}.sender{font-size:12px;color:#69cfa8;font-weight:700;margin-bottom:4px}.message-text{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.38}.message.deleted .message-text{color:var(--muted);font-style:italic}.msg-meta{display:flex;justify-content:flex-end;align-items:center;gap:5px;color:#93aaaf;font-size:10px;margin-top:4px}.msg-actions{display:none;gap:4px;position:absolute;top:-24px;right:5px;background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:2px;z-index:3}.message:hover .msg-actions{display:flex}.msg-actions button{background:transparent;border:0;color:var(--muted);padding:3px 6px}.reply-snippet{border-left:3px solid var(--accent);padding:4px 7px;margin-bottom:6px;background:rgba(0,0,0,.12);border-radius:6px;font-size:12px;color:#c1d2d8}.attachments{display:flex;flex-direction:column;gap:6px;margin-top:6px}.attachment-image{max-width:100%;max-height:420px;border-radius:10px;object-fit:contain;background:#080c0f}.file-link{display:flex;gap:9px;align-items:center;color:var(--text);text-decoration:none;background:rgba(0,0,0,.15);padding:9px;border-radius:9px}.typing{height:20px;padding:0 max(18px,calc((100% - 920px)/2));color:var(--muted);font-size:12px}.composer{display:flex;gap:8px;align-items:flex-end;padding:10px max(14px,calc((100% - 940px)/2)) calc(10px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:rgba(16,24,32,.96)}.attach-btn,.send-btn{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;flex:0 0 auto}.attach-btn{background:var(--panel2);font-size:20px;cursor:pointer}.send-btn{border:0;background:var(--accent);color:white;font-size:20px}.compose-main{flex:1;min-width:0}.compose-main textarea{width:100%;resize:none;max-height:130px;min-height:44px}.file-preview{display:flex;flex-wrap:wrap;gap:6px}.file-chip{background:var(--panel3);padding:5px 8px;border-radius:8px;color:var(--muted);font-size:11px;max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.reply-bar{display:flex;justify-content:space-between;align-items:center;padding:7px max(18px,calc((100% - 920px)/2));background:var(--panel2);border-top:1px solid var(--line)}.reply-bar small,.reply-bar span{display:block}.reply-bar small{color:var(--accent)}.reply-bar span{color:var(--muted);max-width:70vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.auth{height:100dvh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 50% 0,rgba(37,166,122,.18),transparent 32%),var(--bg)}.auth-card{width:min(440px,100%);background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:var(--shadow)}.stack{display:flex;flex-direction:column;gap:11px}.stack h2{margin:0 0 8px}.error{min-height:20px;color:var(--danger);margin-top:12px;font-size:13px}.modal{position:fixed;inset:0;background:rgba(0,0,0,.6);display:grid;place-items:center;padding:18px;z-index:50}.modal-card{width:min(560px,100%);max-height:min(780px,90dvh);overflow:auto;background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.modal-head{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line)}.modal-head h3{margin:0}.modal-body{padding:16px}.user-row{display:flex;align-items:center;gap:10px;padding:10px;border-radius:12px;cursor:pointer}.user-row:hover{background:var(--panel2)}.user-row .meta{flex:1;min-width:0}.user-row small{display:block;color:var(--muted)}.section{padding:12px 0;border-bottom:1px solid var(--line)}.section:last-child{border:0}.section h4{margin:0 0 10px}.setting-row{display:flex;gap:10px;align-items:center;justify-content:space-between;margin:8px 0}.codebox{background:#091015;border:1px solid var(--line);padding:10px;border-radius:10px;overflow-wrap:anywhere;color:#b8d9cd}.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#202f39;border:1px solid var(--line);border-radius:12px;padding:10px 14px;box-shadow:var(--shadow);z-index:70}.mobile-only{display:none}
@media(max-width:760px){.app{display:block}.sidebar,.chat-pane{position:absolute;inset:0;width:100%;height:100dvh}.chat-pane{transform:translateX(100%);transition:transform .18s ease;z-index:10}.app.chat-open .chat-pane{transform:translateX(0)}.app.chat-open .sidebar{visibility:hidden}.mobile-only{display:inline-block}.side-header,.chat-header{height:58px}.side-actions{grid-template-columns:1fr auto}.messages{padding:15px 10px}.message{max-width:86%}.composer{padding:8px 8px calc(8px + env(safe-area-inset-bottom))}.typing,.reply-bar{padding-left:12px;padding-right:12px}.auth-card{padding:22px}.msg-actions{display:flex;position:static;background:transparent;border:0;justify-content:flex-end;margin-top:2px}.msg-actions button{font-size:12px}.attachment-image{max-height:55dvh}}

.auth-note{margin:0;color:var(--muted);font-size:14px;line-height:1.45}
.link-btn{background:transparent;border:0;color:var(--accent);padding:6px 0;cursor:pointer;text-align:left}
.link-btn:hover{text-decoration:underline}
.security-status{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:8px 0;color:var(--muted)}
.security-status strong{color:var(--text)}

.consent-row{display:grid;grid-template-columns:20px 1fr;align-items:start;gap:9px;color:var(--muted);font-size:13px;line-height:1.42;padding:3px 1px}.consent-row input{width:18px;height:18px;margin:1px 0 0;accent-color:var(--accent);padding:0}.inline-link{display:inline;background:none;border:0;padding:0;color:var(--accent);font:inherit;text-decoration:underline;cursor:pointer}.auth-footer{margin-top:5px;border-top:1px solid var(--line);padding-top:10px}.legal-card{width:min(760px,100%)}.legal-tabs{display:flex;gap:4px;padding:10px 14px 0;border-bottom:1px solid var(--line);overflow-x:auto}.legal-tab{background:transparent;border:0;color:var(--muted);padding:10px 12px;border-bottom:2px solid transparent;white-space:nowrap}.legal-tab.active{color:var(--text);border-bottom-color:var(--accent)}.legal-content{padding:18px 20px 24px}.legal-panel{line-height:1.58;color:#d7e0e4}.legal-panel h2{margin:0 0 4px}.legal-panel h4{margin:22px 0 7px;color:var(--text)}.legal-panel p{margin:7px 0}.legal-version{color:var(--muted);font-size:13px}.legal-panel strong{color:var(--text)}