:root{
  --bg:#0f172a;
  --card:#0b1220;
  --text:#e5e7eb;
  --muted:#94a3b8;
  --line:#1f2937;
  --btn:#1d4ed8;
  --btn2:#0b3aa4;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background:var(--bg);
  color:var(--text);
}

.wrap{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:16px;
}

.card{
  width:min(720px, 100%);
  border:1px solid var(--line);
  background:var(--card);
  padding:20px;
}

.header h1{margin:0 0 6px 0; font-size:22px}
.sub{margin:0 0 16px 0; color:var(--muted); font-size:14px}

.grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
}

label span{
  display:block;
  font-size:12px;
  color:var(--muted);
  margin-bottom:6px;
}

input{
  width:100%;
  padding:10px 12px;
  background:transparent;
  color:var(--text);
  border:1px solid var(--line);
  outline:none;
}

.row{
  display:flex;
  gap:12px;
  align-items:center;
  margin-top:12px;
}

button{
  border:1px solid var(--line);
  background:transparent;
  color:var(--text);
  padding:10px 12px;
  cursor:pointer;
}

button.primary{
  border-color:transparent;
  background:var(--btn);
}

button.primary:hover{background:var(--btn2)}
.quote{color:var(--muted); font-size:14px}
.status{color:var(--muted); font-size:14px}
.fine{margin-top:12px; color:var(--muted); font-size:12px}

/* Mobile: stack inputs */
@media (max-width: 640px){
  .grid{grid-template-columns:1fr}
  .row{flex-direction:column; align-items:stretch}
}