body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: #0f1115;
  color: #eceff4;
  margin: 0;
}
.container { max-width: 1100px; margin: 24px auto; padding: 0 16px; }
.narrow { max-width: 500px; }
.header { display: flex; justify-content: space-between; align-items: center; }
.card {
  background: #161a22;
  border: 1px solid #242a35;
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 16px;
}
.muted { color: #a8b0bf; }
.error { background: #3b1220; border: 1px solid #9f1239; padding: 8px; border-radius: 6px; margin: 10px 0; }
label { display: block; margin-bottom: 10px; }
input, select, textarea, button {
  width: 100%;
  background: #0d1118;
  color: #e5e9f0;
  border: 1px solid #2f3645;
  border-radius: 6px;
  padding: 8px;
  box-sizing: border-box;
  font-family: inherit;
  font-size: inherit;
  line-height: 1.45;
}
textarea {
  min-height: 10em;
  resize: vertical;
  vertical-align: top;
}
button { cursor: pointer; width: auto; min-width: 90px; }
table { width: 100%; border-collapse: collapse; }
th, td { border-bottom: 1px solid #2a3040; text-align: left; padding: 8px; vertical-align: top; }
code { color: #9bd5ff; }
.actions { display: flex; gap: 8px; }
.actions form { margin: 0; }
#output {
  background: #0b0e14;
  border: 1px solid #2a3040;
  border-radius: 6px;
  min-height: 170px;
  max-height: 420px;
  overflow: auto;
  padding: 10px;
}
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }