:root{--bg:#f5f6f8;--card:#fff;--ink:#111827;--muted:#6b7280;--line:#e5e7eb;--brand:#2563eb;--brand-soft:#eff4ff;--danger:#dc2626;--ok:#16a34a;--warn:#d97706}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:14.5px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
h1{font-size:22px;margin:0 0 16px}h2{font-size:17px;margin:0 0 12px}h3{font-size:15px;margin:18px 0 8px}h4{font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin:16px 0 6px}
code{background:#f3f4f6;padding:2px 6px;border-radius:6px;font-size:13px}
.muted{color:var(--muted)}.small{font-size:12.5px}.hidden{display:none!important}.pad{padding:16px}.nowrap{white-space:nowrap}
.top{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:20px;background:#0f172a;color:#fff;padding:0 20px;height:56px}
.brand{color:#fff;font-size:19px;letter-spacing:-.01em}.brand b{color:#93c5fd}.brand:hover{text-decoration:none}
.brand.big{color:var(--ink);font-size:26px;text-align:center;margin-bottom:18px}.brand.big b{color:var(--brand)}
.top nav{display:flex;gap:4px;flex:1;align-items:center}
.top nav a{color:#cbd5e1;padding:8px 12px;border-radius:8px}.top nav a:hover{background:rgba(255,255,255,.08);text-decoration:none;color:#fff}
.top nav a.on{background:rgba(255,255,255,.14);color:#fff}.top nav .out{margin-left:auto}
.menu{display:none;background:none;border:0;color:#fff;font-size:22px;margin-left:auto;cursor:pointer}
main{max-width:1280px;margin:0 auto;padding:24px 20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;margin-bottom:18px}
.card.flush{padding:0;overflow-x:auto}
.bar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}.bar h1{margin:0}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px 20px;align-items:start}.span2{grid-column:1/-1}
.form label{display:flex;flex-direction:column;gap:5px;font-weight:600;font-size:13.5px;margin-bottom:12px}
.form label.check{flex-direction:row;align-items:center;font-weight:400;gap:8px}
input,select,textarea{font:inherit;color:inherit;border:1px solid #d1d5db;border-radius:8px;padding:8px 10px;background:#fff;width:100%}
input[type=checkbox],input[type=radio]{width:auto}input[type=color]{padding:2px;height:38px;width:80px}
textarea{resize:vertical}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brand-soft);border-color:var(--brand)}
.btn{display:inline-block;background:var(--brand);color:#fff;border:0;border-radius:8px;padding:9px 16px;font:inherit;font-weight:600;cursor:pointer}
.btn:hover{filter:brightness(1.06);text-decoration:none}.btn.sm{padding:6px 12px;font-size:13px}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid #d1d5db}.btn.danger{background:var(--danger)}
.linkbtn{background:none;border:0;color:var(--brand);cursor:pointer;font:inherit;padding:0}.linkbtn.danger{color:var(--danger)}
.icon{background:#fff;border:1px solid var(--line);border-radius:6px;width:26px;height:26px;cursor:pointer}
form.inline{display:inline-flex;gap:6px;align-items:center;margin:4px 8px 4px 0}
.danger-zone input{width:130px}
.flash{background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46;padding:10px 14px;border-radius:10px;margin-bottom:16px}
.err{color:var(--danger)}.ok{color:var(--ok)}
.tbl{width:100%;border-collapse:collapse}.tbl th,.tbl td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl th{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);background:#fafafa}
.tbl tr.dim td{opacity:.55}.clip{max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tag{display:inline-block;font-size:11.5px;font-weight:600;padding:2px 8px;border-radius:999px;background:#f3f4f6;color:#374151;text-transform:capitalize}
.tag.new{background:#eff6ff;color:#1d4ed8}.tag.open,.tag.active{background:#ecfdf5;color:#047857}.tag.pending{background:#fffbeb;color:#b45309}
.tag.resolved,.tag.disabled{background:#f3f4f6;color:#6b7280}.tag.needs,.tag.banned{background:#fef2f2;color:#b91c1c}
.pill{display:inline-block;min-width:20px;text-align:center;background:#ef4444;color:#fff;border-radius:999px;font-size:11.5px;font-weight:700;padding:1px 6px}
.live{color:#22c55e;font-size:11px;margin-left:5px}
.snippet{display:flex;gap:10px;align-items:center;background:#0f172a;border-radius:10px;padding:12px 14px;margin:8px 0}
.snippet code{background:none;color:#e2e8f0;flex:1;overflow-x:auto;white-space:nowrap}
.steps li{margin-bottom:12px}.plain{list-style:none;padding:0;margin:0}.plain li{padding:6px 0;border-bottom:1px solid var(--line)}
.kvs{display:grid;grid-template-columns:130px 1fr;gap:6px 12px;margin:0 0 10px}.kvs dt{color:var(--muted)}.kvs dd{margin:0;word-break:break-word}
.journey{list-style:none;padding:0;margin:0;font-size:13px}.journey li{padding:5px 0;border-bottom:1px dashed var(--line)}

/* inbox */
.inbox{display:grid;grid-template-columns:360px 1fr;height:calc(100vh - 104px);background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.list-pane{border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}
.filters{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:12px;border-bottom:1px solid var(--line)}.filters input{grid-column:1/-1}
.conv-list{overflow-y:auto;flex:1}
.conv{display:block;padding:12px 14px;border-bottom:1px solid var(--line);color:inherit}.conv:hover{background:#f9fafb;text-decoration:none}
.conv.sel{background:var(--brand-soft)}.conv.needs{box-shadow:inset 3px 0 0 #ef4444}
.conv .r1,.conv .r3{display:flex;justify-content:space-between;gap:8px;align-items:center}.conv .who{font-weight:600}
.conv .prev{color:#374151;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.conv .tags{margin-top:5px;display:flex;gap:5px}
.chat-pane{display:flex;min-height:0}.chat-pane .empty{margin:auto;color:var(--muted)}
.chat{display:flex;flex-direction:column;flex:1;min-width:0}
.chat-head{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line)}.chat-head .who{font-weight:700;font-size:15.5px}
.back{display:none;background:none;border:0;font-size:20px;cursor:pointer}
.status-btns{margin-left:auto;display:flex;gap:6px}
.status-btns button{border:1px solid #d1d5db;background:#fff;border-radius:8px;padding:6px 12px;cursor:pointer;font:inherit;font-size:13px}
.status-btns button.on{background:#f3f4f6;font-weight:600}
.chat-body{flex:1;display:grid;grid-template-columns:1fr 260px;min-height:0}
.msgs{overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:6px;background:#f9fafb}
.bubble{max-width:72%;padding:9px 13px;border-radius:14px;white-space:pre-wrap;word-wrap:break-word}
.bubble a{color:inherit;text-decoration:underline}
.bubble.visitor{align-self:flex-start;background:#fff;border:1px solid var(--line)}
.bubble.agent{align-self:flex-end;background:var(--brand);color:#fff}
.bubble.auto{align-self:flex-end;background:#e0e7ff;color:#1e3a8a}
.bmeta{font-size:11.5px;color:var(--muted);margin-bottom:6px}.bmeta.agent,.bmeta.auto{align-self:flex-end}
.sys{align-self:center;font-size:12px;color:#b45309;background:#fffbeb;border-radius:999px;padding:3px 12px;margin:6px 0}
.vinfo{border-left:1px solid var(--line);padding:4px 16px 16px;overflow-y:auto;font-size:13px}
.vinfo .kv{display:flex;justify-content:space-between;gap:10px;padding:3px 0}.vinfo .kv span:last-child{text-align:right;word-break:break-word}
.composer{display:grid;grid-template-columns:180px 1fr auto;gap:10px;padding:12px;border-top:1px solid var(--line);align-items:end}
.composer textarea{min-height:44px;max-height:160px}

/* auth */
body.auth{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}
.auth-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:30px;width:100%;max-width:380px}
.auth-card.wide{max-width:560px}.auth-card label{display:flex;flex-direction:column;gap:5px;font-weight:600;font-size:13.5px;margin-bottom:12px}
.auth-card .btn{width:100%;margin-top:6px}.auth-card h2{margin-top:20px}

@media (max-width:900px){
  .grid2{grid-template-columns:1fr}
  .menu{display:block}.top nav{display:none;position:absolute;top:56px;left:0;right:0;background:#0f172a;flex-direction:column;align-items:stretch;padding:8px}
  body.nav-open .top nav{display:flex}.top nav .out{margin-left:0}
  main{padding:14px 10px}
  .inbox{grid-template-columns:1fr;height:calc(100vh - 84px)}
  .chat-pane{display:none}body.chat-open .chat-pane{display:flex}body.chat-open .list-pane{display:none}
  .back{display:block}.chat-body{grid-template-columns:1fr}.vinfo{display:none}
  .composer{grid-template-columns:1fr auto}.composer select{grid-column:1/-1}
  .chat-head{flex-wrap:wrap}
}