:root{
  --bg:#0b0f1a; --panel:#121829; --panel2:#1a2236; --line:#26304a;
  --ink:#eef2ff; --muted:#9aa6c4; --brand:#4f46e5; --brand2:#7c3aed;
  --client:#4f46e5; --agent:#1f2a44; --ok:#22c55e; --warn:#f59e0b; --err:#ef4444;
  --radius:18px; --safe-b:env(safe-area-inset-bottom,0px); --safe-t:env(safe-area-inset-top,0px);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font:16px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased; overscroll-behavior-y:none;
}
.view{position:fixed; inset:0; display:flex; flex-direction:column}
[hidden]{display:none !important}
button{font:inherit; cursor:pointer}
.ghost{background:none; border:none; color:var(--muted)}
.error{color:var(--err); font-size:14px; margin:6px 0 0}

/* ---------- login ---------- */
#view-login{align-items:center; justify-content:center; padding:24px;
  background:radial-gradient(120% 80% at 50% 0%, #1a1f3a 0%, var(--bg) 60%)}
.login-card{width:100%; max-width:400px; background:var(--panel); border:1px solid var(--line);
  border-radius:24px; padding:28px 24px calc(24px + var(--safe-b)); box-shadow:0 20px 60px rgba(0,0,0,.45)}
.brand{text-align:center; margin-bottom:18px}
.brand img{border-radius:14px}
.brand h1{font-size:22px; margin:10px 0 2px}
.brand .sub{color:var(--muted); margin:0; font-size:14px}
#login-form{display:flex; flex-direction:column; gap:6px}
#login-form label{font-size:13px; color:var(--muted); margin-top:10px}
#login-form input{background:var(--panel2); border:1px solid var(--line); color:var(--ink);
  border-radius:12px; padding:13px 14px; font-size:16px}
#login-form input:focus{outline:2px solid var(--brand); border-color:transparent}
#login-btn{margin-top:18px; background:linear-gradient(135deg,var(--brand),var(--brand2));
  color:#fff; border:none; border-radius:12px; padding:14px; font-weight:600; font-size:16px}
#login-btn:disabled{opacity:.6}
.foot{color:var(--muted); font-size:12.5px; text-align:center; margin:16px 0 0}

/* ---------- topbar ---------- */
.topbar{display:flex; align-items:center; justify-content:space-between; gap:10px;
  padding:calc(10px + var(--safe-t)) 14px 10px; background:var(--panel);
  border-bottom:1px solid var(--line)}
.who{display:flex; align-items:center; gap:10px; min-width:0}
.who .dot{width:9px; height:9px; border-radius:50%; background:var(--ok); flex:none;
  box-shadow:0 0 0 3px rgba(34,197,94,.18)}
.biz{font-weight:600; font-size:15px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
.cid{color:var(--muted); font-size:12px}
.top-actions{display:flex; align-items:center; gap:8px; flex:none}
.pill{font-size:11px; padding:3px 9px; border-radius:999px; background:rgba(34,197,94,.15);
  color:#86efac; border:1px solid rgba(34,197,94,.3)}
.pill.off{background:rgba(245,158,11,.15); color:#fcd34d; border-color:rgba(245,158,11,.35)}
#logout-btn{font-size:14px}

/* ---------- feed ---------- */
.feed{flex:1; overflow-y:auto; padding:16px 12px 12px; display:flex; flex-direction:column; gap:10px;
  -webkit-overflow-scrolling:touch}
.empty{margin:auto; text-align:center; color:var(--muted); max-width:280px}
.empty .hint{font-size:13px; margin-top:4px}
.msg{max-width:82%; padding:9px 12px; border-radius:16px; word-wrap:break-word; white-space:pre-wrap;
  position:relative; font-size:15px}
.msg .meta{display:block; font-size:10.5px; opacity:.7; margin-top:4px}
.msg.client{align-self:flex-end; background:linear-gradient(135deg,var(--brand),var(--brand2));
  color:#fff; border-bottom-right-radius:5px}
.msg.agent{align-self:flex-start; background:var(--agent); color:var(--ink);
  border:1px solid var(--line); border-bottom-left-radius:5px}
.msg img{max-width:100%; border-radius:12px; margin:2px 0 4px; display:block}
.msg .status{font-size:10.5px}
.msg .status.queued{color:#fcd34d}
.msg .status.failed{color:#fca5a5}
.msg .status.sending{color:#c7d2fe}
.day-sep{align-self:center; font-size:11px; color:var(--muted); background:var(--panel);
  padding:3px 10px; border-radius:999px; border:1px solid var(--line)}

/* ---------- preview + composer ---------- */
.preview-bar{display:flex; align-items:center; gap:10px; padding:8px 12px; background:var(--panel);
  border-top:1px solid var(--line)}
.preview-bar img{height:56px; width:56px; object-fit:cover; border-radius:10px; border:1px solid var(--line)}
.composer{display:flex; align-items:flex-end; gap:8px; padding:8px 10px calc(8px + var(--safe-b));
  background:var(--panel); border-top:1px solid var(--line)}
.composer .cam{display:flex; align-items:center; justify-content:center; width:44px; height:44px;
  border-radius:12px; color:var(--muted); background:var(--panel2); flex:none}
.composer textarea{flex:1; resize:none; max-height:120px; background:var(--panel2); color:var(--ink);
  border:1px solid var(--line); border-radius:14px; padding:11px 14px; font-size:16px; line-height:1.35}
.composer textarea:focus{outline:2px solid var(--brand); border-color:transparent}
.composer .send{width:44px; height:44px; border-radius:50%; border:none; flex:none; color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand2)); display:flex; align-items:center; justify-content:center}
.composer .send:disabled{opacity:.45}

/* ---------- toast ---------- */
.toast{position:fixed; left:50%; bottom:calc(84px + var(--safe-b)); transform:translateX(-50%);
  background:#000d; color:#fff; padding:9px 15px; border-radius:999px; font-size:13px; z-index:50;
  border:1px solid var(--line); max-width:90vw}

@media (min-width:520px){ .view{max-width:480px; margin:0 auto; border-left:1px solid var(--line); border-right:1px solid var(--line)} }