:root{
  --bg:#0b0f14; --bg2:#121922; --panel:#161f2b; --panel2:#1d2836;
  --line:#243244; --text:#e7edf5; --muted:#8aa0b8; --accent:#2f81f7;
  --accent2:#1a6ae0; --sent:#1f6feb; --recv:#1f2a38; --danger:#e5484d;
  --ok:#3fb950; --warn:#f0b429;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg); color:var(--text);
  -webkit-tap-highlight-color:transparent;
}
button{font-family:inherit;cursor:pointer}
input{font-family:inherit}
/* o atributo hidden tem que esconder SEMPRE, mesmo quando a classe define display */
[hidden]{display:none!important}

/* ----------------------------- gate / login ----------------------------- */
.gate{position:fixed;inset:0;display:grid;place-items:center;padding:18px;overflow:auto;background:
  radial-gradient(1200px 600px at 50% -10%, #16233a 0%, var(--bg) 60%);}
.gate-card{width:100%;max-width:440px;background:var(--panel);border:1px solid var(--line);
  border-radius:18px;padding:22px}
.gate-card h1{margin:0 0 14px;font-size:26px}
.warn{background:#2a1d0c;border:1px solid #6b4a12;border-radius:12px;padding:14px;font-size:14px;line-height:1.45}
.warn strong{color:var(--warn);display:block;margin-bottom:6px}
.warn p{margin:8px 0 0}
#loginForm{display:flex;flex-direction:column;gap:12px;margin-top:16px}
#loginForm label{font-size:13px;color:var(--muted)}
#loginForm input[type=text]{background:var(--bg2);border:1px solid var(--line);color:var(--text);
  padding:13px 14px;border-radius:12px;font-size:16px;outline:none}
#loginForm input[type=text]:focus{border-color:var(--accent)}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text)!important;cursor:pointer}
.check input{margin-top:2px;width:18px;height:18px;accent-color:var(--accent)}
#loginBtn{background:var(--accent);border:none;color:#fff;padding:13px;border-radius:12px;font-size:16px;font-weight:600}
#loginBtn:active{background:var(--accent2)}
.error{color:var(--danger);font-size:14px;margin:0}

/* ----------------------------- app layout ----------------------------- */
.app{display:grid;grid-template-columns:320px 1fr;height:100dvh}
.sidebar{border-right:1px solid var(--line);background:var(--bg2);display:flex;flex-direction:column;min-height:0}
.side-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--line)}
.me{display:flex;align-items:center;gap:10px;font-weight:600;min-width:0}
.me span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.avatar{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--accent2);
  color:#fff;font-weight:700;flex:none;text-transform:uppercase}
.avatar.big{width:84px;height:84px;font-size:32px}
.rec-banner{background:#2a0f12;color:#ff9ba0;font-size:12px;padding:7px 14px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:7px}
.rec-banner::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--danger);animation:blink 1.3s infinite}
@keyframes blink{50%{opacity:.25}}
.newdm{display:flex;gap:8px;padding:10px 12px;border-bottom:1px solid var(--line)}
.newdm input{flex:1;background:var(--bg);border:1px solid var(--line);color:var(--text);padding:10px;border-radius:10px;outline:none;min-width:0}
.newdm input:focus{border-color:var(--accent)}
.newdm button{background:var(--accent);border:none;color:#fff;width:42px;border-radius:10px;font-size:20px;font-weight:700;flex:none}
.convo-list{overflow-y:auto;flex:1;min-height:0}
.convo{display:flex;align-items:center;gap:11px;padding:11px 14px;border-bottom:1px solid #1a2431;cursor:pointer}
.convo:hover{background:var(--panel)}
.convo.active{background:var(--panel2)}
.convo .meta{min-width:0;flex:1}
.convo .name{font-weight:600;display:flex;align-items:center;gap:7px}
.convo .last{font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dot{width:9px;height:9px;border-radius:50%;background:#43506a;flex:none}
.dot.on{background:var(--ok)}
.badge{background:var(--accent);color:#fff;font-size:11px;min-width:19px;height:19px;border-radius:10px;
  display:grid;place-items:center;padding:0 5px;font-weight:700}

/* ----------------------------- chat ----------------------------- */
.chat{display:flex;flex-direction:column;min-width:0;min-height:0;background:
  linear-gradient(0deg, var(--bg) 0%, #0d1420 100%)}
.chat-head{display:flex;align-items:center;gap:10px;padding:10px 12px;border-bottom:1px solid var(--line);background:var(--bg2)}
.peer{display:flex;align-items:center;gap:10px;flex:1;min-width:0}
.peer-name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.peer-status{font-size:12px;color:var(--muted)}
.call-actions{display:flex;gap:4px}
.icon-btn{background:transparent;border:none;color:var(--text);font-size:21px;width:42px;height:42px;border-radius:10px}
.icon-btn:hover{background:var(--panel)}
.icon-btn:disabled{opacity:.35;cursor:not-allowed}
.icon-btn.send{color:var(--accent);font-size:23px}
.messages{flex:1;overflow-y:auto;padding:16px 14px;display:flex;flex-direction:column;gap:8px;min-height:0}
.empty{margin:auto;color:var(--muted);text-align:center;font-size:14px;padding:30px}
.msg{max-width:78%;padding:9px 12px;border-radius:15px;font-size:15px;line-height:1.35;position:relative;word-wrap:break-word;overflow-wrap:anywhere}
.msg.me{align-self:flex-end;background:var(--sent);border-bottom-right-radius:5px}
.msg.them{align-self:flex-start;background:var(--recv);border-bottom-left-radius:5px}
.msg .time{font-size:10.5px;opacity:.6;margin-top:3px;text-align:right}
.msg img,.msg video{max-width:100%;border-radius:10px;display:block;margin-bottom:3px;max-height:60vh}
.eph-chip{display:inline-flex;align-items:center;gap:7px;background:rgba(0,0,0,.25);border:1px dashed rgba(255,255,255,.3);
  border-radius:10px;padding:10px 13px;cursor:pointer;font-size:14px;min-width:170px}
.eph-chip.spent{cursor:default;opacity:.7;border-style:solid}
.caption{margin-top:5px}
.typing{padding:4px 18px;color:var(--muted);font-size:13px;font-style:italic}

/* composer */
.composer{display:flex;align-items:center;gap:6px;padding:9px 10px;border-top:1px solid var(--line);background:var(--bg2);
  padding-bottom:calc(9px + env(safe-area-inset-bottom))}
#msgInput{flex:1;background:var(--bg);border:1px solid var(--line);color:var(--text);padding:12px 14px;
  border-radius:22px;font-size:16px;outline:none;min-width:0}
#msgInput:focus{border-color:var(--accent)}

/* ----------------------------- sheet (anexo) ----------------------------- */
.sheet{position:fixed;inset:0;background:rgba(0,0,0,.55);display:flex;align-items:flex-end;justify-content:center;z-index:40}
.sheet-card{width:100%;max-width:460px;background:var(--panel);border-radius:18px 18px 0 0;padding:10px;display:flex;flex-direction:column;gap:6px}
.sheet-card button{background:var(--panel2);border:none;color:var(--text);padding:16px;border-radius:12px;font-size:16px;text-align:left}
.sheet-card .cancel{background:transparent;color:var(--muted);text-align:center}
.sheet-note{text-align:center;color:var(--warn);font-size:13px;padding:6px 4px 4px}

/* ----------------------------- viewer ----------------------------- */
.viewer{position:fixed;inset:0;background:rgba(0,0,0,.95);z-index:50;display:grid;place-items:center}
.viewer-body{max-width:100vw;max-height:100vh;padding:14px}
.viewer-body img,.viewer-body video{max-width:100vw;max-height:88vh;border-radius:8px}
.viewer-close{position:fixed;top:14px;right:16px;background:rgba(255,255,255,.12);color:#fff;border:none;
  width:44px;height:44px;border-radius:50%;font-size:20px;z-index:51}

/* ----------------------------- camera ao vivo ----------------------------- */
.camera{position:fixed;inset:0;background:#000;z-index:55;display:flex;flex-direction:column}
.camera video{width:100%;height:100%;object-fit:cover}
.camera-bar{position:absolute;bottom:calc(30px + env(safe-area-inset-bottom));left:0;right:0;display:flex;
  align-items:center;justify-content:center;gap:40px;z-index:2}
.cam-shot{width:72px;height:72px;border-radius:50%;background:#fff;border:5px solid rgba(255,255,255,.45);cursor:pointer}
.cam-shot:active{transform:scale(.94)}

/* ----------------------------- chamadas ----------------------------- */
.incoming{position:fixed;inset:0;background:rgba(0,0,0,.7);display:grid;place-items:center;z-index:60}
.incoming-card{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:28px 26px;text-align:center;width:88%;max-width:360px}
.incoming-name{font-size:21px;font-weight:700;margin-top:14px}
.incoming-kind{color:var(--muted);margin-top:4px}
.incoming-actions{display:flex;gap:14px;justify-content:center;margin-top:26px}
.call-btn{border:none;color:#fff;border-radius:50%;width:62px;height:62px;font-size:22px;display:grid;place-items:center}
.call-btn.accept{background:var(--ok)}
.call-btn.reject{background:var(--danger)}
.call{position:fixed;inset:0;background:#05080c;z-index:60;display:flex;flex-direction:column}
.call .remote{width:100%;height:100%;object-fit:contain;background:#05080c}
.call .local{position:absolute;top:16px;right:16px;width:30vw;max-width:150px;border-radius:12px;border:2px solid rgba(255,255,255,.25);object-fit:cover;background:#111;z-index:2}
.call-status{position:absolute;top:18px;left:0;right:0;text-align:center;color:#fff;font-size:15px;text-shadow:0 1px 4px #000;z-index:2}
.call-bar{position:absolute;bottom:calc(30px + env(safe-area-inset-bottom));left:0;right:0;display:flex;gap:18px;justify-content:center;z-index:2}
.call-bar .call-btn{background:rgba(255,255,255,.16)}
.call-bar .call-btn.reject{background:var(--danger)}
.call-btn.off{background:#fff!important;color:#111}

/* ----------------------------- toast ----------------------------- */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#000;color:#fff;
  padding:11px 18px;border-radius:24px;font-size:14px;z-index:90;max-width:90vw;border:1px solid var(--line)}

/* ----------------------------- mobile ----------------------------- */
.only-mobile{display:none}
@media (max-width:760px){
  .app{grid-template-columns:1fr}
  .sidebar{width:100%}
  .chat{display:none}
  .app.show-chat .sidebar{display:none}
  .app.show-chat .chat{display:flex}
  .only-mobile{display:grid}
  .msg{max-width:85%}
}