:root{--bg:#0b141a;--panel:#111b21;--panel2:#202c33;--line:#2a3942;--txt:#e9edef;--muted:#8696a0;--green:#00a884;
  --out:#005c4b;--in:#202c33;--red:#f15c6d;--r:10px;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--txt)}
a{color:#53bdeb}.hidden{display:none!important}.muted{color:var(--muted)}.err{color:var(--red)}
button{font:inherit;cursor:pointer;color:inherit}
input,textarea,select{font:inherit;color:var(--txt);background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:10px 12px;width:100%;outline:none}
input:focus,textarea:focus{border-color:var(--green)}
label{display:block;color:var(--muted);font-size:14px;margin:10px 0}label input{margin-top:4px}
.btn{border:0;border-radius:24px;padding:10px 18px;background:var(--panel2)}.btn.primary{background:var(--green);color:#fff}
.btn.danger{background:#5c1f27}.row{display:flex;gap:8px;flex-wrap:wrap}.row.end{justify-content:flex-end;margin-top:14px}
/* auth */
.auth{min-height:100vh;display:grid;place-items:center;padding:16px}
.auth-card{width:min(380px,100%);background:var(--panel);padding:28px;border-radius:14px;text-align:center}
.auth-card label{text-align:left}.auth-card .btn{width:100%;margin-top:12px}
.logo{font-size:44px}.logo.big{font-size:72px}
/* layout */
.app{display:grid;grid-template-columns:380px 1fr;height:100vh;height:100dvh}
.side{background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:0}
.bar{display:flex;align-items:center;gap:10px;padding:10px 14px;background:var(--panel2);min-height:58px}
.bar-title{font-weight:600;font-size:17px;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.icon{background:none;border:0;font-size:20px;padding:6px 8px;border-radius:50%;display:inline-flex;align-items:center}
.icon:hover{background:#ffffff14}
.avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-weight:700;color:#fff;flex:none;font-size:16px}
.avatar.huge{width:120px;height:120px;font-size:46px;margin:0 auto}
.search{margin:8px 12px;width:calc(100% - 24px);padding:8px 12px;border-radius:8px}
.hint{margin:8px 12px 0;padding:10px;border-radius:8px;background:#0a3d33;font-size:14px}
.conv-list{overflow-y:auto;flex:1}
.conv{display:flex;gap:12px;align-items:center;padding:10px 14px;cursor:pointer;border-bottom:1px solid #ffffff08}
.conv:hover,.conv.active{background:var(--panel2)}
.conv .meta{flex:1;min-width:0}.conv .top{display:flex;justify-content:space-between;gap:8px}
.conv .name{font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv .time{font-size:12px;color:var(--muted);flex:none}
.conv .prev{font-size:14px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:flex;gap:6px}
.badge{background:var(--green);color:#fff;border-radius:12px;font-size:12px;padding:1px 7px;margin-left:auto;flex:none}
.botpill{font-size:10px;background:#1f4e79;border-radius:6px;padding:1px 5px;margin-left:6px;vertical-align:middle}
/* chat */
.main{display:flex;flex-direction:column;min-width:0;background:#0b141a}
.main.empty .placeholder{display:flex}.placeholder{display:none;flex:1;flex-direction:column;align-items:center;justify-content:center;color:var(--muted);text-align:center}
.chat-meta{flex:1;min-width:0}.sub{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.back{display:none}
.msgs{flex:1;overflow-y:auto;padding:16px 6%;display:flex;flex-direction:column;gap:3px}
.day{align-self:center;background:var(--panel2);color:var(--muted);font-size:12px;padding:4px 10px;border-radius:8px;margin:10px 0}
.msg{max-width:min(560px,78%);padding:6px 9px 6px;border-radius:var(--r);position:relative;line-height:1.35;word-wrap:break-word;white-space:pre-wrap}
.msg.in{background:var(--in);align-self:flex-start;border-top-left-radius:2px}
.msg.out{background:var(--out);align-self:flex-end;border-top-right-radius:2px}
.msg.sys{align-self:center;background:#182229;color:var(--muted);font-size:13px;white-space:normal}
.msg .who{font-size:13px;font-weight:600;margin-bottom:2px}
.msg .ft{font-size:11px;color:#ffffff99;float:right;margin:6px 0 -4px 10px;white-space:nowrap}
.msg img{max-width:100%;max-height:320px;border-radius:6px;display:block;cursor:pointer}
.msg audio{width:240px;max-width:100%}
.msg .file{display:flex;gap:8px;align-items:center;background:#00000033;padding:8px;border-radius:6px;color:var(--txt);text-decoration:none}
.msg.deleted{font-style:italic;color:var(--muted)}
.typing{color:var(--green)}
.composer{display:flex;gap:6px;align-items:flex-end;padding:8px 10px calc(8px + env(safe-area-inset-bottom));background:var(--panel2)}
.composer textarea{resize:none;max-height:140px;border-radius:20px;padding:10px 14px;background:#2a3942;border:0}
.send{background:var(--green);border:0;border-radius:50%;width:44px;height:44px;flex:none;color:#fff;font-size:18px}
#btnRec.rec{background:var(--red);color:#fff}
/* call */
.call{position:fixed;inset:0;z-index:30;background:radial-gradient(circle at 50% 30%,#1e3a35,#0b141a 70%);display:flex;flex-direction:column;align-items:center;justify-content:space-between;padding:60px 20px calc(40px + env(safe-area-inset-bottom))}
.call video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;background:#000}
#localVideo{inset:auto 16px 140px auto;width:110px;height:160px;border-radius:12px;z-index:2;border:2px solid #fff3}
.call video:not([srcObject]){display:none}
.call-info{text-align:center;z-index:3}.call-info h2{margin:16px 0 4px}.reason{color:#cfd8dc;max-width:480px}
.caption{color:#9de1d3;max-width:520px;min-height:22px}
.call-actions{display:flex;gap:28px;z-index:3}
.round{width:68px;height:68px;border-radius:50%;border:0;font-size:26px;color:#fff}
.green{background:#25d366}.red{background:var(--red)}.grey{background:#ffffff26}.grey.off{background:#fff;color:#000}
.ringing .avatar.huge{animation:ring 1.2s infinite}
@keyframes ring{50%{box-shadow:0 0 0 18px #25d36633}}
/* modal / toast */
.modal{position:fixed;inset:0;z-index:40;background:#000a;display:grid;place-items:center;padding:16px}
.modal-card{background:var(--panel);border-radius:12px;padding:18px;width:min(460px,100%);max-height:90vh;overflow:auto}
.modal-card h3{margin-top:0}
.pick{display:flex;align-items:center;gap:10px;padding:8px;border-radius:8px;cursor:pointer}.pick:hover{background:var(--panel2)}
.pick input{width:auto}
.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%);background:#233138;padding:10px 16px;border-radius:8px;z-index:50;max-width:90vw}
code,.mono{font-family:ui-monospace,Consolas,monospace;font-size:12px;word-break:break-all;background:#00000040;padding:2px 4px;border-radius:4px}
@media (max-width:760px){
  .app{grid-template-columns:1fr}
  .app.chat-open .side{display:none}.app:not(.chat-open) .main{display:none}
  .back{display:inline-flex}.msgs{padding:12px 10px}.msg{max-width:86%}
}