:root{
  --navy:#122a36;
  --paper:#f6f4f0;
  --ink:#171a1d;
  --muted:#697076;
  --line:#ddd8cf;
  --gold:#b99a62;
  --green:#2e6b57;
  --red:#9b4b45;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:Arial,Helvetica,sans-serif;
  background:#ece9e3;
  color:var(--ink);
}
.app{
  min-height:100vh;
  display:grid;
  grid-template-columns:300px minmax(520px,1fr) 430px;
}
.sidebar{
  background:var(--navy);
  color:#fff;
  padding:28px 20px;
}
.brand{
  font-size:22px;
  letter-spacing:1px;
  margin-bottom:8px;
}
.sub{
  font-size:13px;
  color:#bfc9ce;
  margin-bottom:20px;
}
.connection{
  padding:13px;
  border:1px solid rgba(255,255,255,.15);
  border-radius:7px;
  margin-bottom:22px;
  background:rgba(255,255,255,.05);
  font-size:12px;
  line-height:1.45;
}
.connection strong{display:block;margin-bottom:4px}
.connection.ok strong{color:#9ed1b6}
.connection.bad strong{color:#f2b4ae}
.connection span{color:#c6d0d4;word-break:break-all}
.topic-list{display:flex;flex-direction:column;gap:10px}
.topic-item{
  display:grid;
  grid-template-columns:24px 1fr 42px;
  align-items:center;
  gap:10px;
  padding:13px 12px;
  border:1px solid rgba(255,255,255,.12);
  border-radius:7px;
  background:rgba(255,255,255,.05);
  cursor:pointer;
}
.topic-item.selected{
  background:rgba(255,255,255,.12);
  border-color:rgba(255,255,255,.30);
}
.topic-item.disabled{opacity:.52}
.drag{color:#97a8b0;font-size:18px}
.topic-name{font-size:14px;line-height:1.25}
.switch{position:relative;width:38px;height:22px}
.switch input{display:none}
.slider{position:absolute;inset:0;background:#66747a;border-radius:22px;transition:.2s}
.slider:before{
  content:"";
  position:absolute;
  width:16px;height:16px;
  left:3px;top:3px;
  background:#fff;
  border-radius:50%;
  transition:.2s;
}
.switch input:checked+.slider{background:#78a88e}
.switch input:checked+.slider:before{transform:translateX(16px)}
.editor{
  padding:34px 38px 50px;
  background:#f8f7f4;
}
.toolbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:18px;
  margin-bottom:28px;
  padding-bottom:18px;
  border-bottom:1px solid var(--line);
}
.interval{display:flex;align-items:center;gap:10px}
.interval input{width:75px}
.editor h1{font-size:28px;margin:0 0 8px;font-weight:500}
.hint{color:var(--muted);font-size:14px;margin-bottom:28px}
.field{margin-bottom:20px}
.field label{
  display:block;
  font-size:13px;
  font-weight:bold;
  margin-bottom:7px;
}
input[type=text],input[type=number],textarea,select{
  width:100%;
  border:1px solid #ccc7bd;
  border-radius:6px;
  padding:12px 13px;
  font-size:15px;
  font-family:inherit;
  background:#fff;
}
textarea{min-height:110px;resize:vertical}
button{
  border:0;
  border-radius:6px;
  padding:11px 18px;
  cursor:pointer;
  font-size:14px;
}
.save{background:var(--navy);color:#fff}
.secondary{background:#e5e1d9;color:#222}
.background-box{
  border:1px solid var(--line);
  border-radius:8px;
  padding:18px;
  margin:26px 0;
  background:#fff;
}
.background-title{font-size:14px;font-weight:bold;margin-bottom:14px}
.upload-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.current-file{font-size:12px;color:var(--muted);margin-top:10px;word-break:break-all}
.status{margin-top:16px;font-size:13px;color:#586066}
.status.ok{color:var(--green)}
.status.bad{color:var(--red)}
.preview-wrap{
  background:#d8d4cc;
  padding:24px;
  border-left:1px solid #cfcac1;
}
.preview-title{
  font-size:13px;
  text-transform:uppercase;
  letter-spacing:2px;
  color:#5f6568;
  margin-bottom:14px;
}
.preview{
  width:360px;
  height:640px;
  margin:auto;
  background:var(--navy);
  position:sticky;
  top:24px;
  overflow:hidden;
  box-shadow:0 10px 35px rgba(0,0,0,.22);
  color:#fff;
}
.preview-media{
  position:absolute;inset:0;
  width:100%;height:100%;
  object-fit:cover;
  display:none;
}
.preview-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,20,27,.08),rgba(10,20,27,.72));
  display:none;
}
.preview-logo{
  position:absolute;
  top:18px;right:18px;
  font-size:10px;
  letter-spacing:1px;
  z-index:4;
}
.preview-line{
  position:absolute;
  left:22px;top:90px;
  width:2px;height:190px;
  background:var(--gold);
  z-index:4;
}
.preview-copy{
  position:absolute;
  left:38px;right:28px;
  bottom:92px;
  z-index:4;
}
.preview-kicker{
  font-size:9px;
  letter-spacing:1.8px;
  text-transform:uppercase;
  margin-bottom:13px;
}
.preview-headline{
  font-size:32px;
  line-height:1.02;
  text-transform:uppercase;
  font-weight:600;
}
.preview-body{
  font-size:12px;
  line-height:1.4;
  margin-top:15px;
  color:#e4eaec;
}
.preview-footer{
  position:absolute;
  left:0;right:0;bottom:0;
  height:70px;
  background:#fff;color:#222;
  display:flex;
  align-items:center;
  justify-content:space-around;
  font-size:9px;
  z-index:5;
}
@media(max-width:1200px){
  .app{grid-template-columns:260px 1fr}
  .preview-wrap{display:none}
}