/* TRẠM THÁM TỬ V2 — Telegram-style panel */
:root{
  --bg:#0e1621;--header:#17212b;--panel:#17212b;--line:#101921;
  --bubble-in:#182533;--bubble-out:#2b5278;--bubble-note:#3a3420;
  --accent:#64b3f4;--gold:#c9a96e;
  --text:#f1f1f1;--muted:#7f91a4;--faint:#5a6b7c;
  --ok:#7fb69b;--alert:#e0a94f;--incident:#e06b6b;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html{-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,"Noto Sans",sans-serif;min-height:100vh;min-height:100dvh;line-height:1.45}
a{color:var(--accent);text-decoration:none}

/* ===== chat page layout ===== */
.chat{display:flex;flex-direction:column;height:100vh;height:100dvh;max-width:720px;margin:0 auto;background:var(--bg)}
.chat-bg{background:
  radial-gradient(circle at 20% 30%,rgba(201,169,110,.05),transparent 40%),
  radial-gradient(circle at 80% 70%,rgba(100,179,244,.04),transparent 40%),
  var(--bg)}

/* header */
.hdr{flex:none;display:flex;align-items:center;gap:11px;padding:9px 13px;background:var(--header);border-bottom:1px solid var(--line);position:relative;z-index:5}
.hdr .back{color:var(--accent);font-size:22px;padding:4px 8px 4px 0;cursor:pointer;background:none;border:none;line-height:1}
.ava{width:40px;height:40px;border-radius:50%;flex:none;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;color:#141210;background:linear-gradient(135deg,#c9a96e,#8a6d3b)}
.ava.blue{background:linear-gradient(135deg,#64b3f4,#3a7bbf);color:#0b1520}
.hdr .tt{min-width:0;flex:1}
.hdr .tt .nm{font-size:15.5px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hdr .tt .st{font-size:12.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hdr .tt .st.live{color:var(--ok)}
.hdr-pill{flex:none;font-size:10px;font-weight:800;letter-spacing:1px;color:var(--gold);border:1px solid rgba(201,169,110,.5);border-radius:99px;padding:3px 9px}

/* feed */
.feed{flex:1;overflow-y:auto;padding:12px 12px 8px;-webkit-overflow-scrolling:touch}
.daysep{display:flex;justify-content:center;margin:10px 0 4px}
.daysep span{background:rgba(0,0,0,.35);color:#cdd8e3;font-size:12px;padding:3px 12px;border-radius:99px}
.msg{display:flex;margin-top:7px;max-width:88%}
.msg.in{justify-content:flex-start}
.msg.out{justify-content:flex-end;margin-left:auto}
.bub{position:relative;background:var(--bubble-in);border-radius:14px;border-bottom-left-radius:5px;padding:7px 10px 6px;min-width:110px;max-width:100%;box-shadow:0 1px 1px rgba(0,0,0,.25)}
.msg.out .bub{background:var(--bubble-out);border-radius:14px;border-bottom-right-radius:5px;border-bottom-left-radius:14px}
.bub .from{font-size:13px;font-weight:700;color:var(--gold);margin-bottom:1px}
.bub .from.c2{color:#7cc4a0}.bub .from.c3{color:#e4a0d8}.bub .from.c4{color:#8ab6f0}
.tagline{display:inline-flex;align-items:center;gap:5px;font-size:10.5px;font-weight:800;letter-spacing:.7px;border-radius:6px;padding:1px 7px;margin:2px 0 3px}
.tagline.ok{color:var(--ok);background:rgba(127,182,155,.12)}
.tagline.alert{color:var(--alert);background:rgba(224,169,79,.14)}
.tagline.incident{color:var(--incident);background:rgba(224,107,107,.15)}
.bub .txt{font-size:14.5px;white-space:pre-wrap;word-break:break-word}
.bub .foot{display:flex;justify-content:flex-end;align-items:center;gap:4px;font-size:11px;color:var(--faint);margin-top:2px;font-variant-numeric:tabular-nums}
.msg.out .bub .foot{color:#9fc0dd}
.bub .foot .ed{font-style:italic}
.pgrid{display:grid;gap:3px;border-radius:9px;overflow:hidden;margin:4px 0}
.pgrid.n1{grid-template-columns:1fr}
.pgrid.n2,.pgrid.n4{grid-template-columns:1fr 1fr}
.pgrid.n3,.pgrid.n5,.pgrid.n6{grid-template-columns:1fr 1fr 1fr}
.pgrid img{width:100%;aspect-ratio:1;object-fit:cover;display:block;cursor:pointer}
.pgrid.n1 img{aspect-ratio:4/3;max-height:280px}
.sysline{text-align:center;color:var(--faint);font-size:12.5px;padding:30px 16px}

/* composer */
.comp{flex:none;background:var(--header);border-top:1px solid var(--line);padding:7px 9px calc(7px + env(safe-area-inset-bottom))}
.comp-previews{display:flex;gap:7px;flex-wrap:wrap;padding:0 2px 7px}
.comp-previews .th{position:relative;width:54px;height:54px}
.comp-previews img{width:54px;height:54px;object-fit:cover;border-radius:8px}
.comp-previews .x{position:absolute;top:-6px;right:-6px;width:19px;height:19px;border-radius:99px;background:#3b4a5a;color:#fff;border:none;font-size:10px;cursor:pointer;line-height:1}
.comp-row{display:flex;align-items:flex-end;gap:7px}
.icobtn{flex:none;width:38px;height:38px;border-radius:50%;border:none;background:none;color:var(--muted);font-size:21px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.icobtn:active{color:var(--accent)}
.comp-input{flex:1;background:var(--bubble-in);border:none;border-radius:19px;color:var(--text);padding:9px 14px;font-size:15px;font-family:inherit;outline:none;resize:none;max-height:110px;line-height:1.4}
.comp-input::placeholder{color:var(--faint)}
.sendbtn{flex:none;width:38px;height:38px;border-radius:50%;border:none;background:linear-gradient(135deg,#c9a96e,#a9884f);color:#141210;font-size:17px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform .1s}
.sendbtn:active{transform:scale(.92)}
.sendbtn:disabled{opacity:.4}
.sendbtn.blue{background:linear-gradient(135deg,#64b3f4,#3a7bbf);color:#0b1520}
.lvbar{display:flex;gap:6px;padding:0 2px 7px}
.lvbar button{flex:1;background:var(--bubble-in);border:1px solid transparent;border-radius:99px;padding:6px 4px;color:var(--muted);font-size:11.5px;font-weight:700;cursor:pointer;font-family:inherit}
.lvbar button.on-ok{border-color:var(--ok);color:var(--ok)}
.lvbar button.on-alert{border-color:var(--alert);color:var(--alert)}
.lvbar button.on-incident{border-color:var(--incident);color:var(--incident)}
.namebar{padding:0 2px 7px}
.namebar input{width:100%;background:var(--bubble-in);border:none;border-radius:99px;color:var(--text);padding:7px 14px;font-size:13px;font-family:inherit;outline:none}

/* ===== chat-list (admin home) ===== */
.list-feed{flex:1;overflow-y:auto}
.chatrow{display:flex;gap:12px;align-items:center;padding:10px 14px;cursor:pointer;border-bottom:1px solid rgba(255,255,255,.03)}
.chatrow:active{background:rgba(255,255,255,.04)}
.chatrow .ava{width:52px;height:52px;font-size:19px}
.chatrow .mid{flex:1;min-width:0}
.chatrow .r1{display:flex;align-items:baseline;gap:8px}
.chatrow .nm{font-size:15.5px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}
.chatrow .tm{font-size:12px;color:var(--faint);flex:none;font-variant-numeric:tabular-nums}
.chatrow .r2{display:flex;align-items:center;gap:8px;margin-top:2px}
.chatrow .prev{font-size:13.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}
.cnt{flex:none;min-width:21px;height:21px;border-radius:99px;background:#3b4a5a;color:#dfe8f0;font-size:11.5px;font-weight:700;display:flex;align-items:center;justify-content:center;padding:0 6px}
.cnt.gold{background:var(--gold);color:#141210}
.fab{position:fixed;right:18px;bottom:calc(20px + env(safe-area-inset-bottom));width:54px;height:54px;border-radius:50%;border:none;background:linear-gradient(135deg,#c9a96e,#a9884f);color:#141210;font-size:26px;cursor:pointer;box-shadow:0 6px 20px rgba(0,0,0,.45);z-index:20}
.searchwrap{padding:8px 12px;background:var(--header)}
.searchwrap input{width:100%;background:var(--bubble-in);border:none;border-radius:99px;color:var(--text);padding:8px 15px;font-size:14px;font-family:inherit;outline:none}

/* sheets / modals */
.sheet-back{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:40;display:flex;align-items:flex-end;justify-content:center}
.sheet{background:var(--header);border-radius:16px 16px 0 0;width:100%;max-width:720px;padding:18px 16px calc(20px + env(safe-area-inset-bottom))}
.sheet h3{font-size:15px;font-weight:700;margin-bottom:12px}
.sheet input,.sheet textarea,.sheet select{width:100%;background:var(--bubble-in);border:1px solid transparent;border-radius:11px;color:var(--text);padding:11px 13px;font-size:15px;font-family:inherit;outline:none;margin-bottom:9px}
.sheet input:focus,.sheet textarea:focus{border-color:var(--accent)}
.sheet .btn{width:100%;border:none;border-radius:11px;padding:12px;font-size:15px;font-weight:700;cursor:pointer;font-family:inherit;margin-top:2px}
.btn-gold{background:linear-gradient(135deg,#c9a96e,#a9884f);color:#141210}
.btn-flat{background:var(--bubble-in);color:var(--text)}
.btn-red{background:rgba(224,107,107,.14);color:var(--incident)}
.menu{position:fixed;z-index:50;background:#1e2c3a;border-radius:12px;box-shadow:0 8px 30px rgba(0,0,0,.5);overflow:hidden;min-width:190px}
.menu button{display:flex;align-items:center;gap:10px;width:100%;background:none;border:none;color:var(--text);padding:11px 15px;font-size:14.5px;font-family:inherit;cursor:pointer;text-align:left}
.menu button:active{background:rgba(255,255,255,.06)}
.menu button.danger{color:var(--incident)}
.menu-back{position:fixed;inset:0;z-index:45}

/* misc */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.94);display:flex;align-items:center;justify-content:center;z-index:99;padding:14px}
.lightbox img{max-width:100%;max-height:94vh;border-radius:8px}
.toast{position:fixed;bottom:80px;left:50%;transform:translateX(-50%);background:#1e2c3a;color:var(--text);padding:10px 20px;border-radius:99px;font-size:13.5px;z-index:98;box-shadow:0 8px 30px rgba(0,0,0,.5);white-space:nowrap}
.login{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100dvh;padding:24px;gap:14px;max-width:380px;margin:0 auto}
.login .biglogo{width:84px;height:84px;border-radius:24px;background:linear-gradient(135deg,#c9a96e,#8a6d3b);display:flex;align-items:center;justify-content:center;font-size:42px}
.login h1{font-size:19px;font-weight:800;letter-spacing:.5px}
.login p{color:var(--muted);font-size:13.5px;text-align:center;margin-top:-6px}
.login input{width:100%;background:var(--bubble-in);border:1px solid transparent;border-radius:12px;color:var(--text);padding:13px 15px;font-size:16px;font-family:inherit;outline:none;text-align:center}
.login input:focus{border-color:var(--gold)}
.login .btn{width:100%;border:none;border-radius:12px;padding:13px;font-size:15px;font-weight:700;cursor:pointer;font-family:inherit}
.linkline{display:flex;align-items:center;gap:8px;background:var(--bubble-in);border-radius:11px;padding:10px 12px;margin-bottom:8px}
.linkline b{flex:none;font-size:10px;letter-spacing:.8px;color:var(--gold)}
.linkline span{flex:1;font-size:11.5px;color:var(--muted);word-break:break-all}
.linkline button{flex:none;background:none;border:none;color:var(--accent);font-size:13px;font-weight:700;cursor:pointer;font-family:inherit}