:root{--green:#169b4b;--green2:#0e7a3b;--mint:#eff9f1;--mint2:#e1f3e6;--bg:#f4f7f5;--panel:#fff;--text:#132017;--muted:#718078;--line:#e4ebe6;--bubble:#dff4e4;--shadow:0 18px 50px rgba(13,63,32,.08)}*{box-sizing:border-box}html,body{margin:0;height:100%;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:var(--bg)}button,input,textarea{font:inherit}button{cursor:pointer}.hidden{display:none!important}.muted{color:var(--muted)}.small{font-size:13px}.shell{height:100dvh;display:grid;grid-template-columns:68px 330px minmax(380px,1fr) 330px;background:var(--panel)}.rail{border-right:1px solid var(--line);display:flex;flex-direction:column;align-items:center;padding:16px 10px;gap:12px}.mini-logo{width:42px;height:42px;border-radius:14px;background:var(--mint2);display:grid;place-items:center;color:var(--green);font-size:24px}.railbtn,.icon,.avatar-btn{border:0;background:transparent;border-radius:12px}.railbtn{width:44px;height:44px;font-size:20px}.railbtn.active,.railbtn:hover{background:var(--mint);color:var(--green)}.rail-spacer{flex:1}.avatar-btn{width:40px;height:40px;background:var(--green);color:white}.sidebar{border-right:1px solid var(--line);min-width:0;display:flex;flex-direction:column}.side-head,.chat-head{height:70px;display:flex;align-items:center;padding:0 18px;gap:12px}.side-head{justify-content:space-between}.brand b{font-size:25px;letter-spacing:-1px;color:var(--green2)}.brand.big b{font-size:46px}.pencil{font-size:36px;color:var(--green);margin-right:10px}.icon{width:40px;height:40px;font-size:22px}.icon:hover{background:var(--mint)}.disabled{opacity:.35}.search{height:44px;margin:0 14px 10px;background:#f3f6f4;border-radius:14px;display:flex;align-items:center;padding:0 12px;gap:8px}.search input{border:0;outline:0;background:transparent;width:100%}.tabs{display:flex;gap:6px;padding:0 14px 12px}.tabs button{border:0;background:transparent;padding:8px 10px;border-radius:999px;font-size:12px;color:var(--muted)}.tabs button.active{background:var(--mint2);color:var(--green2)}.chat-list{overflow:auto;padding:0 8px 20px}.chat-item{display:grid;grid-template-columns:50px 1fr auto;gap:10px;padding:10px;border-radius:16px;align-items:center}.chat-item:hover,.chat-item.active{background:var(--mint)}.chat-avatar{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#dff4e4,#b8e5c4);color:var(--green2);font-weight:800;overflow:hidden}.chat-avatar img,.avatar-img{width:100%;height:100%;object-fit:cover}.chat-main{min-width:0}.chat-line{display:flex;justify-content:space-between;gap:10px}.chat-line b,.chat-preview{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-preview{font-size:13px;color:var(--muted);margin-top:3px}.unread{min-width:22px;height:22px;padding:0 6px;border-radius:12px;background:var(--green);color:#fff;font-size:11px;display:grid;place-items:center}.pin{font-size:12px;color:var(--green)}.conversation{position:relative;background:linear-gradient(rgba(246,251,247,.92),rgba(246,251,247,.92)),radial-gradient(circle at 20% 20%,#d8f0df 0 2px,transparent 3px);min-width:0}.empty{height:100%;display:grid;place-content:center;text-align:center;color:var(--muted)}.empty-pencil{font-size:74px;color:#b5d8be}.chat-view{height:100%;display:flex;flex-direction:column}.chat-head{background:rgba(255,255,255,.9);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.chat-title-wrap{display:flex;flex-direction:column;min-width:0;flex:1}.chat-title-wrap span{font-size:12px;color:var(--muted)}.messages{flex:1;overflow:auto;padding:22px clamp(14px,5vw,70px);display:flex;flex-direction:column;gap:7px}.message-row{display:flex;gap:8px;align-items:flex-end}.message-row.mine{justify-content:flex-end}.bubble{max-width:min(72%,680px);padding:9px 11px;border-radius:18px 18px 18px 5px;background:white;box-shadow:0 1px 0 rgba(0,0,0,.04)}.mine .bubble{background:var(--bubble);border-radius:18px 18px 5px 18px}.sender{font-size:12px;font-weight:700;color:var(--green2);margin-bottom:3px}.meta{display:flex;justify-content:flex-end;gap:7px;font-size:10px;color:#789083;margin-top:3px}.attachment-card{display:block;margin:6px 0;max-width:100%;border-radius:13px;overflow:hidden;color:inherit;text-decoration:none}.attachment-card img,.attachment-card video{display:block;max-width:360px;width:100%;border-radius:13px}.file-card{padding:12px;background:rgba(255,255,255,.55);border-radius:12px}.reactions{display:flex;gap:4px;flex-wrap:wrap;margin-top:5px}.reaction{border:1px solid #cce6d3;background:white;border-radius:999px;padding:2px 6px;font-size:12px}.message-actions{opacity:0;display:flex;gap:2px}.message-row:hover .message-actions{opacity:1}.message-actions button{border:0;background:white;border-radius:8px;padding:5px}.composer{padding:10px 14px calc(10px + env(safe-area-inset-bottom));display:flex;align-items:flex-end;gap:7px;background:rgba(255,255,255,.92);border-top:1px solid var(--line)}.composer textarea{resize:none;max-height:120px;min-height:40px;flex:1;border:0;outline:0;padding:10px 12px;background:#f2f6f3;border-radius:16px}.send{border:0;width:42px;height:42px;border-radius:50%;background:var(--green);color:white;font-size:18px}.typing{height:20px;padding-left:22px;font-size:12px;color:var(--green)}.replybar{display:flex;justify-content:space-between;padding:8px 16px;background:var(--mint);border-top:1px solid var(--line);font-size:13px}.replybar button{border:0;background:transparent}.info{border-left:1px solid var(--line);padding:24px;overflow:auto;position:relative}.close-info{position:absolute;right:12px;top:12px;border:0;background:transparent;font-size:24px}.info-profile{text-align:center}.info-profile .big-avatar{width:90px;height:90px;border-radius:50%;margin:auto;background:var(--mint2);display:grid;place-items:center;font-size:30px;color:var(--green2)}.member{display:flex;align-items:center;gap:10px;padding:8px 0}.member .chat-avatar{width:36px;height:36px}.auth-screen{min-height:100dvh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 30% 0,#e3f5e8,transparent 42%),#f7faf8}.auth-card{width:min(420px,100%);background:white;padding:36px;border-radius:30px;box-shadow:var(--shadow)}.auth-card input{display:block;width:100%;padding:14px 15px;border:1px solid var(--line);border-radius:13px;margin:10px 0;outline:0}.auth-card input:focus{border-color:#79c48e}.auth-card button{width:100%;border:0;background:var(--green);color:white;padding:14px;border-radius:13px;margin-top:10px}.auth-card .ghost{background:var(--mint);color:var(--green2)}.modal{position:fixed;inset:0;background:rgba(12,25,17,.3);backdrop-filter:blur(6px);display:grid;place-items:center;padding:18px;z-index:20}.modal-card{position:relative;width:min(520px,100%);max-height:90dvh;overflow:auto;background:white;border-radius:24px;padding:25px;box-shadow:var(--shadow)}.modal-x{position:absolute;right:14px;top:12px;border:0;background:transparent;font-size:26px}.modal-card input,.modal-card textarea,.modal-card select{width:100%;padding:12px;border:1px solid var(--line);border-radius:12px;margin:6px 0 10px}.modal-card .primary{width:100%;border:0;border-radius:13px;padding:13px;background:var(--green);color:white}.person-row{display:flex;align-items:center;gap:10px;padding:10px;border-radius:13px}.person-row:hover{background:var(--mint)}.person-row .grow{flex:1}.badge{font-size:11px;background:var(--mint2);color:var(--green2);padding:4px 7px;border-radius:999px}.profile-actions{display:grid;gap:8px}.profile-actions button{padding:11px;border:0;border-radius:12px}.mobile-back{display:none;border:0;background:transparent;font-size:30px}#toast{position:fixed;right:20px;bottom:20px;z-index:99}.toast{background:#132017;color:white;padding:11px 14px;border-radius:12px;margin-top:6px;box-shadow:var(--shadow)}
body.dark{--bg:#0f1712;--panel:#121b15;--text:#edf6ef;--muted:#8da196;--line:#25342a;--bubble:#153c24;--mint:#18291e;--mint2:#1d3525;background:#0f1712}.dark .conversation{background:#101812}.dark .chat-head,.dark .composer{background:rgba(18,27,21,.94)}.dark .search,.dark .composer textarea{background:#1b261f;color:white}.dark .bubble,.dark .message-actions button,.dark .modal-card,.dark .auth-card{background:#18231c}.dark .reaction{background:#18231c}.dark .auth-screen{background:#0f1712}
@media(max-width:1150px){.shell{grid-template-columns:64px 310px 1fr}.info{position:absolute;right:0;top:0;bottom:0;width:330px;background:var(--panel);z-index:8;box-shadow:-12px 0 40px rgba(0,0,0,.08)}}@media(max-width:760px){.shell{display:block;position:relative}.rail{display:none}.sidebar{position:absolute;inset:0;background:var(--panel);z-index:2}.conversation{position:absolute;inset:0;z-index:1}.conversation.open{z-index:3}.mobile-back{display:block}.messages{padding:14px 10px}.bubble{max-width:86%}.chat-head{height:62px;padding:0 9px}.sidebar.chat-open{display:none}.info{width:100%;z-index:10}.tabs{overflow:auto}.side-head{height:62px}.auth-card{padding:27px 22px;border-radius:24px}}