:root{
  --bg:#0b0d10;
  --card:#12161c;
  --muted:#9aa4b2;
  --text:#e7eef7;
  --accent:#5dd6ff;
  --danger:#ff6b6b;
  --ok:#7CFFB2;
  --border:rgba(255,255,255,0.08);
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background: linear-gradient(180deg, #07090c 0%, #0b0d10 60%, #07090c 100%);
  color:var(--text);
}
a{color:inherit; text-decoration:none}
.topbar{
  position:sticky; top:0;
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 16px;
  background:rgba(8,10,13,0.85);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--border);
  z-index:10;
}
.brand{font-weight:700; letter-spacing:0.2px}
.nav a{margin-left:14px; color:var(--muted)}
.nav a:hover{color:var(--text)}
.app{max-width:820px; margin:0 auto; padding:18px 14px 40px}
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:18px;
  padding:16px;
  box-shadow: 0 10px 35px rgba(0,0,0,0.35);
}
.h1{font-size:20px; margin:0 0 8px}
.h2{font-size:16px; margin:0 0 8px}
.p{color:var(--muted); margin:0 0 12px; line-height:1.35}
.grid{display:grid; gap:12px}
.grid-2{grid-template-columns: repeat(2, minmax(0, 1fr));}
@media (max-width:640px){ .grid-2{grid-template-columns:1fr;} }
.btn{
  appearance:none; border:0; cursor:pointer;
  padding:12px 14px; border-radius:14px;
  font-weight:650;
  background:rgba(93,214,255,0.14);
  color:var(--text);
  border:1px solid rgba(93,214,255,0.25);
}
.btn:hover{background:rgba(93,214,255,0.18)}
.btn.secondary{
  background:transparent;
  border:1px solid var(--border);
  color:var(--text);
}
.btn.danger{
  background:rgba(255,107,107,0.12);
  border:1px solid rgba(255,107,107,0.25);
}
.row{display:flex; gap:10px; align-items:center; flex-wrap:wrap}
.input, select, textarea{
  width:100%;
  padding:12px 12px;
  border-radius:14px;
  border:1px solid var(--border);
  background:#0b0f14;
  color:var(--text);
  outline:none;
}
textarea{min-height:100px; resize:vertical}
.label{font-size:12px; color:var(--muted); margin:0 0 6px}
.kv{display:flex; justify-content:space-between; gap:12px; padding:10px 0; border-bottom:1px dashed rgba(255,255,255,0.08)}
.kv:last-child{border-bottom:0}
.badge{
  display:inline-flex; align-items:center;
  padding:4px 10px; border-radius:999px;
  font-size:12px; color:var(--muted);
  border:1px solid var(--border);
}
.badge.ok{color:var(--ok); border-color:rgba(124,255,178,0.25)}
.badge.bad{color:var(--danger); border-color:rgba(255,107,107,0.25)}
.small{font-size:12px; color:var(--muted)}
.footer{
  border-top:1px solid var(--border);
  padding:14px 16px;
  text-align:center;
}
hr.sep{
  border:0; border-top:1px solid var(--border); margin:16px 0;
}
.list{
  display:flex; flex-direction:column; gap:10px;
}
.item{
  padding:12px; border-radius:14px; border:1px solid var(--border);
  background:#0b0f14;
}
.stepper{
  display:flex; gap:8px; flex-wrap:wrap; margin:0 0 12px;
}
.step{
  padding:6px 10px; border-radius:999px;
  border:1px solid var(--border);
  color:var(--muted); font-size:12px;
}
.step.active{color:var(--text); border-color:rgba(93,214,255,0.35)}