:root{
  --bg:#0b1220;
  --panel:#0f1a2e;
  --text:#e5e7eb;
  --muted:#94a3b8;
  --blue:#2563eb;
  --border:#1f2a44;
}

*{ box-sizing:border-box }
body{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial;
  background: var(--bg);
  color: var(--text);
  margin:0;
  padding: 28px 18px;
}

.wrap{
  max-width: 720px;
  margin: 0 auto;
}

.header{
  display:flex;
  align-items:center;
  gap:14px;
  padding: 14px 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.header img{
  height: 44px;
  width: auto;
}

.header .titles{
  display:flex;
  flex-direction:column;
  line-height: 1.1;
}

.header .titles .h1{
  font-size: 1.15rem;
  font-weight: 700;
}
.header .titles .sub{
  font-size: .9rem;
  color: var(--muted);
}

.card{
  margin-top: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
}

.row{ margin: 10px 0; }

label{
  display:flex;
  align-items:center;
  gap:10px;
  margin: 8px 0;
}

input[type="number"]{
  width: 90px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0a1020;
  color: var(--text);
}

select{
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0a1020;
  color: var(--text);
}

.actions{
  display:flex;
  gap:10px;
  margin-top: 14px;
}

button{
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--blue);
  color: white;
  font-size: 1rem;
  cursor: pointer;
}

button.secondary{
  background: transparent;
}

button:disabled{
  opacity: .5;
  cursor: not-allowed;
}

#result{
  margin-top: 14px;
  font-size: 1.2rem;
  word-break: break-all;
  background: #070c18;
  border: 1px solid var(--border);
  padding: 12px;
  border-radius: 12px;
  min-height: 50px;
}

.foot{
  margin-top: 10px;
  color: var(--muted);
  font-size: .85rem;
}

#metrics{
  margin-top: 10px;
}