*{box-sizing:border-box}
:root{--bg:#f4f6f8;--card:#fff;--line:#e3e7eb;--txt:#1d2733;--muted:#6b7785;--pri:#0f8a6c;--pri2:#e6f4f0;--warn:#c77700;--bad:#c0392b;--in:#fff;--out:#d9f5e8}
body{margin:0;font:14px/1.45 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--txt)}
.hidden{display:none!important}
.muted{color:var(--muted)} .err{color:var(--bad)}
input,select,textarea{font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;width:100%}
textarea{min-height:80px;resize:vertical}
label{display:block;font-size:12px;color:var(--muted);margin:10px 0 4px}
.btn{font:inherit;border:1px solid var(--line);background:#fff;padding:7px 12px;border-radius:8px;cursor:pointer;white-space:nowrap}
.btn.primary{background:var(--pri);border-color:var(--pri);color:#fff}
.btn.danger{color:var(--bad)} .btn.sm{padding:4px 8px;font-size:12px}
.link{background:none;border:0;color:var(--pri);cursor:pointer;font:inherit}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px}
.login{min-height:100vh;display:grid;place-items:center}
.login form{width:320px;display:grid;gap:10px}.login h1{margin:0;font-size:22px}
#app{display:flex;min-height:100vh}
.nav{width:220px;background:#12302a;color:#cfe3dd;display:flex;flex-direction:column;padding:12px 8px;gap:2px;position:sticky;top:0;height:100vh}
.nav a{color:inherit;text-decoration:none;padding:8px 10px;border-radius:8px;display:flex;justify-content:space-between}
.nav a.on,.nav a:hover{background:#1d4a40;color:#fff}
.brand{font-weight:700;color:#fff;padding:6px 10px 12px}
.nav select{margin:0 4px 8px;width:auto}
.me{margin-top:auto;padding:10px;font-size:12px;display:flex;justify-content:space-between}
.badge{background:#e74c3c;color:#fff;border-radius:10px;padding:0 7px;font-size:11px}
main{flex:1;min-width:0;padding:18px;overflow:auto}
h2{margin:0 0 14px;font-size:20px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.grid{display:grid;gap:12px}.g2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.g4{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
table{width:100%;border-collapse:collapse;background:#fff}
th,td{text-align:left;padding:8px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:12px;color:var(--muted);font-weight:600}
.pill{display:inline-block;padding:1px 8px;border-radius:10px;font-size:11px;background:#eef1f4}
.pill.bot{background:var(--pri2);color:var(--pri)}.pill.human{background:#fff1dc;color:var(--warn)}.pill.closed{background:#eee;color:#777}
.kpi b{font-size:26px;display:block}.kpi span{color:var(--muted);font-size:12px}
/* inbox */
.inbox{display:grid;grid-template-columns:300px 1fr 300px;gap:0;height:calc(100vh - 36px);background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.clist{border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}
.clist .filters{padding:10px;border-bottom:1px solid var(--line);display:grid;gap:6px}
.clist .items{overflow:auto;flex:1}
.citem{padding:10px 12px;border-bottom:1px solid var(--line);cursor:pointer}
.citem:hover,.citem.on{background:#f3f8f6}
.citem .t{display:flex;justify-content:space-between;gap:6px;font-weight:600}
.citem .p{color:var(--muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.citem.wait{border-left:3px solid var(--warn)}
.chat{display:flex;flex-direction:column;min-height:0;background:#efeae2}
.chat .head{background:#fff;padding:10px 14px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}
.msgs{flex:1;overflow:auto;padding:14px;display:flex;flex-direction:column;gap:6px}
.m{max-width:75%;padding:7px 10px;border-radius:10px;white-space:pre-wrap;word-wrap:break-word;box-shadow:0 1px 1px #0001}
.m.in{background:var(--in);align-self:flex-start}
.m.out{background:var(--out);align-self:flex-end}
.m.out.agent{background:#dbeafe}.m.out.system{background:#fdf3d7}
.m .meta{font-size:10px;color:var(--muted);text-align:right;margin-top:3px}
.m.failed{border:1px solid var(--bad)}
.log{align-self:center;font-size:11px;color:#5d6b5f;background:#fff8;padding:2px 8px;border-radius:6px;max-width:90%}
.composer{background:#fff;padding:10px;border-top:1px solid var(--line);display:grid;gap:6px}
.composer .row textarea{min-height:42px;height:42px}
.side{border-left:1px solid var(--line);padding:14px;overflow:auto}
.side h4{margin:14px 0 6px;font-size:12px;color:var(--muted);text-transform:uppercase}
.empty{display:grid;place-items:center;color:var(--muted);height:100%}
/* kanban */
.kanban{display:flex;gap:10px;overflow:auto;align-items:flex-start}
.col{background:#e9edf0;border-radius:10px;min-width:230px;width:230px;padding:8px}
.col h3{font-size:13px;margin:4px 6px 8px;display:flex;justify-content:space-between}
.kcard{background:#fff;border-radius:8px;padding:8px;margin-bottom:6px;cursor:grab;font-size:13px}
.kcard small{color:var(--muted);display:block}
.col.drop{outline:2px dashed var(--pri)}
/* simulador */
.phone{max-width:420px;height:calc(100vh - 140px);border:10px solid #222;border-radius:30px;display:flex;flex-direction:column;overflow:hidden;background:#efeae2}
.phone .top{background:#075e54;color:#fff;padding:12px}
.phone .msgs .m.in{align-self:flex-end;background:var(--out)}.phone .msgs .m.out{align-self:flex-start;background:#fff}
.bar{height:10px;background:var(--pri);border-radius:4px}
#toast{position:fixed;bottom:16px;left:50%;transform:translateX(-50%);background:#222;color:#fff;padding:8px 14px;border-radius:8px;opacity:0;transition:.3s;pointer-events:none;z-index:9}
#toast.show{opacity:1}
@media (max-width:900px){
  #app{flex-direction:column}.nav{width:100%;height:auto;position:static;flex-direction:row;overflow:auto}.nav .brand,.me{display:none}
  .inbox{grid-template-columns:1fr;height:auto}.inbox .side{border:0}.chat{height:70vh}
}