:root{
  --navy:#0b2a5b;--navy-2:#123873;--green:#1fa463;--green-d:#178a52;--paper:#f7f6f2;
  --ink:#1f2329;--muted:#5d6672;--line:#e3e1da;--card:#fff;--red:#c0392b;--amber:#b7791f;
  --bubble-in:#ffffff;--bubble-out:#dcf3e6;--bubble-app:#e8eefb;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--paper);color:var(--ink);font-size:15px}
a{color:var(--navy)}
button,input,select,textarea{font:inherit}
.btn{display:inline-flex;align-items:center;gap:8px;border:0;border-radius:10px;padding:10px 16px;font-weight:600;cursor:pointer;background:var(--navy);color:#fff}
.btn:hover{background:var(--navy-2)}
.btn.green{background:var(--green)}.btn.green:hover{background:var(--green-d)}
.btn.ghost{background:transparent;color:var(--navy);border:1px solid var(--line)}
.btn.ghost:hover{background:#fff}
.btn.small{padding:6px 10px;font-size:13px}
.btn:disabled{opacity:.55;cursor:not-allowed}
input,select,textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid rgba(31,164,99,.35);border-color:var(--green)}
label{display:block;font-size:13px;font-weight:600;margin:12px 0 6px;color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px}
.muted{color:var(--muted)}
.err{color:var(--red);font-size:14px;min-height:20px;margin-top:10px}
.ok{color:var(--green-d)}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--navy);text-decoration:none;font-size:18px}
.logo img{width:34px;height:34px;border-radius:9px}

/* auth */
.auth{min-height:100%;display:grid;place-items:center;padding:24px 16px}
.auth .card{width:100%;max-width:420px}
.auth h1{font-size:22px;margin:18px 0 4px}
.tabs{display:flex;gap:6px;background:#f0efe9;border-radius:10px;padding:4px;margin-top:18px}
.tabs button{flex:1;border:0;background:transparent;padding:8px;border-radius:8px;font-weight:600;color:var(--muted);cursor:pointer}
.tabs button.on{background:#fff;color:var(--navy);box-shadow:0 1px 2px rgba(0,0,0,.06)}

/* layout */
.top{height:58px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.top .right{display:flex;align-items:center;gap:10px;font-size:14px}
.wrap{max-width:1180px;margin:0 auto;padding:22px 16px}
.grid{display:grid;gap:16px}
.channels{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.chan{cursor:pointer;transition:border-color .15s}
.chan:hover{border-color:var(--green)}
.chan .phone{font-size:18px;font-weight:700}
.pill{display:inline-block;font-size:12px;font-weight:700;padding:3px 8px;border-radius:999px;background:#eef6f1;color:var(--green-d)}
.pill.coex{background:#eef2fb;color:var(--navy)}
.pill.off{background:#fbeeee;color:var(--red)}
.connect-box{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.empty{text-align:center;padding:40px 20px}

/* inbox */
.inbox{display:grid;grid-template-columns:320px 1fr;height:calc(100vh - 58px)}
.side{border-right:1px solid var(--line);background:#fff;display:flex;flex-direction:column;min-height:0}
.side .head{padding:12px;border-bottom:1px solid var(--line);display:flex;gap:8px}
.list{overflow:auto;flex:1}
.contact{padding:12px 14px;border-bottom:1px solid #f1efe9;cursor:pointer;display:flex;justify-content:space-between;gap:8px}
.contact:hover,.contact.on{background:#f6f8f7}
.contact .n{font-weight:600}
.contact .p{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:220px}
.badge{background:var(--green);color:#fff;border-radius:999px;font-size:12px;font-weight:700;padding:1px 7px;height:20px}
.chat{display:flex;flex-direction:column;min-height:0;background:#efeae2}
.chat .head{background:#fff;padding:12px 16px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:10px}
.msgs{flex:1;overflow:auto;padding:18px 6%}
.msg{max-width:72%;margin:6px 0;padding:8px 11px;border-radius:10px;background:var(--bubble-in);box-shadow:0 1px 1px rgba(0,0,0,.06);white-space:pre-wrap;word-wrap:break-word}
.msg.out{margin-left:auto;background:var(--bubble-out)}
.msg.out.app{background:var(--bubble-app)}
.msg .meta{font-size:11px;color:var(--muted);margin-top:4px;text-align:right}
.msg.failed{border:1px solid var(--red)}
.composer{background:#f0f0f0;padding:10px 12px;border-top:1px solid var(--line)}
.composer .row{display:flex;gap:8px;align-items:flex-end}
.composer textarea{resize:none;min-height:44px;max-height:140px}
.notice{font-size:13px;padding:8px 10px;border-radius:8px;background:#fff6e5;color:#7a5410;margin-bottom:8px}
.notice.okn{background:#eaf6ef;color:#1d6b43}
.modal{position:fixed;inset:0;background:rgba(10,20,40,.45);display:none;align-items:center;justify-content:center;padding:16px;z-index:20}
.modal.show{display:flex}
.modal .card{width:100%;max-width:520px;max-height:90vh;overflow:auto}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:9px 8px;border-bottom:1px solid var(--line)}
th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em}
.back{display:none}
@media (max-width:820px){
  .inbox{grid-template-columns:1fr}
  .inbox.chatting .side{display:none}
  .inbox:not(.chatting) .chat{display:none}
  .back{display:inline-flex}
  .msgs{padding:14px 10px}
  .msg{max-width:88%}
}