:root{--bg:#0b0f0d;--panel:#111613;--panel2:#161c18;--border:#243028;--green:#00c36a;--green-d:#009454;--text:#e8f0ea;--muted:#8aa096;--danger:#e5484d;--radius:12px}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;min-height:100dvh}
.hidden{display:none!important}
.muted{color:var(--muted);font-size:.85em}
.error{color:var(--danger);font-size:.9em;min-height:1.2em}
#topbar{display:flex;align-items:center;gap:.6rem;padding:.7rem 1rem;background:var(--panel);border-bottom:1px solid var(--border)}
#topbar strong{color:var(--green)}#me-label{margin-left:auto;color:var(--muted);font-size:.85em}
.dot{width:.7rem;height:.7rem;border-radius:50%;background:#555}.dot.online{background:var(--green)}.dot.offline{background:var(--danger)}.dot.retry{background:orange}
#layout{display:grid;grid-template-columns:200px 300px 1fr;height:calc(100vh - 52px);height:calc(100dvh - 52px)}
#sidebar{background:var(--panel);border-right:1px solid var(--border);padding:.8rem;display:flex;flex-direction:column;gap:.4rem}
.nav-btn{background:none;border:1px solid transparent;color:var(--text);padding:.7rem;border-radius:10px;text-align:left;font-size:1rem;cursor:pointer;min-height:44px}
.nav-btn:hover{border-color:var(--border)}.nav-btn.active{background:var(--panel2);border-color:var(--green);color:var(--green)}
.badge{background:var(--danger);color:#fff;border-radius:99px;padding:0 .45em;font-size:.8em}
#me-card{margin-top:auto;padding:.6rem;background:var(--panel2);border-radius:10px;font-size:.85em}
#list-panel{border-right:1px solid var(--border);overflow-y:auto;padding:.8rem;background:var(--panel)}
#list-panel input{width:100%;padding:.65rem;border-radius:10px;border:1px solid var(--border);background:var(--bg);color:var(--text);margin-bottom:.6rem;font-size:1rem}
.row{display:flex;align-items:center;gap:.6rem;padding:.65rem;border-radius:10px;cursor:pointer;min-height:56px;border:1px solid transparent}
.row:hover{background:var(--panel2)}.row.active{border-color:var(--green);background:var(--panel2)}
.avatar{width:2.4rem;height:2.4rem;border-radius:50%;background:var(--green-d);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex:none}
.row .sub{color:var(--muted);font-size:.82em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.row .grow{flex:1;min-width:0}.unread{background:var(--green);color:#000;border-radius:99px;padding:0 .5em;font-size:.78em;font-weight:700}
.row .mini{border:1px solid var(--border);background:var(--panel2);color:var(--text);border-radius:8px;padding:.4rem .6rem;cursor:pointer;min-height:36px}
.row .mini.ok{border-color:var(--green);color:var(--green)}
#chat-panel{display:flex;flex-direction:column;background:var(--bg);min-width:0}
#chat-header{display:flex;align-items:center;gap:.6rem;padding:.6rem .9rem;background:var(--panel);border-bottom:1px solid var(--border)}
#back-btn{display:none;background:none;border:none;color:var(--green);font-size:1.4rem;cursor:pointer;padding:.4rem .6rem}
#messages{flex:1;overflow-y:auto;padding:1rem;display:flex;flex-direction:column;gap:.45rem}
.msg{max-width:75%;padding:.55rem .8rem;border-radius:14px;line-height:1.45;word-wrap:break-word}
.msg.mine{align-self:flex-end;background:var(--green);color:#04120a;border-bottom-right-radius:4px}
.msg.theirs{align-self:flex-start;background:var(--panel2);border:1px solid var(--border);border-bottom-left-radius:4px}
.msg .ts{display:block;font-size:.7em;opacity:.65;margin-top:.2rem}
#typing{padding:.2rem 1rem}
#send-form{display:flex;gap:.5rem;padding:.7rem;border-top:1px solid var(--border);background:var(--panel);padding-bottom:calc(.7rem + env(safe-area-inset-bottom))}
#send-form input{flex:1;padding:.75rem 1rem;border-radius:99px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:1rem}
#send-form button{background:var(--green);border:none;border-radius:50%;width:48px;height:48px;font-size:1.2rem;cursor:pointer;color:#04120a;flex:none}
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.75);display:flex;align-items:center;justify-content:center;z-index:50;padding:1rem}
.setup-card{background:var(--panel);border:1px solid var(--green);border-radius:16px;padding:2rem;max-width:380px;width:100%;display:flex;flex-direction:column;gap:.7rem}
.setup-card h1{color:var(--green)}.setup-card input{padding:.7rem;border-radius:10px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:1rem}
.setup-card button{background:var(--green);border:none;border-radius:10px;padding:.8rem;font-weight:700;font-size:1rem;cursor:pointer;min-height:48px}
.lang-pick{display:flex;gap:.5rem;margin:.6rem 0}
.lang-pick button{flex:1;background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:10px;padding:.8rem .4rem;font-size:1rem;cursor:pointer;min-height:48px}
.lang-pick button:hover{border-color:var(--green)}
.lang-pick button.sel{border-color:var(--green);color:var(--green);background:var(--panel2)}
.empty{padding:2rem;text-align:center;color:var(--muted)}
#bottomnav{display:none}
#view-settings label{display:flex;flex-direction:column;gap:.3rem;margin-bottom:.6rem}
#view-settings input{padding:.65rem;border-radius:10px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:1rem}
#view-settings button{display:block;width:100%;margin:.4rem 0;padding:.75rem;border-radius:10px;border:1px solid var(--green);background:none;color:var(--green);font-size:1rem;cursor:pointer;min-height:44px}
/* Tablet */
@media (max-width:1024px){#layout{grid-template-columns:64px 280px 1fr}.nav-btn{font-size:0}.nav-btn::first-letter{font-size:1.2rem}#sidebar .nav-btn{text-align:center}}
/* Phone */
@media (max-width:720px){
 #layout{display:block;height:calc(100dvh - 52px - 60px);position:relative}
 #sidebar{display:none}#bottomnav{display:flex;background:var(--panel);border-top:1px solid var(--border);position:fixed;bottom:0;left:0;right:0;padding-bottom:env(safe-area-inset-bottom)}
 #bottomnav .nav-btn{flex:1;text-align:center;font-size:1.4rem}
 #list-panel{border:none;height:100%}
 #chat-panel{position:absolute;inset:0;display:none}
 body.chatting #list-panel{display:none}body.chatting #chat-panel{display:flex}
 #back-btn{display:block}.msg{max-width:88%}
}