:root {
  color-scheme: dark;
  font-family: Inter, "Segoe UI", system-ui, sans-serif;
  background: #0f1420;
  color: #e7ecf5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 24px;
}

.shell {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}

.panel {
  background: #171e2e;
  border: 1px solid #2b3550;
  border-radius: 12px;
  padding: 16px;
}

h1,
h2 {
  margin: 0 0 8px;
}

.row,
.grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.grid input,
.grid select,
.row input,
.row select {
  flex: 1;
  min-width: 140px;
  padding: 9px 10px;
  border-radius: 8px;
  border: 1px solid #3a4664;
  background: #0f1420;
  color: #e7ecf5;
}

button {
  padding: 9px 14px;
  border-radius: 8px;
  border: 1px solid #4d68ff;
  background: #24345f;
  color: white;
  cursor: pointer;
}

button:hover {
  background: #2d4178;
}

.muted {
  color: #8b98b5;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
}

.output {
  min-height: 220px;
  margin: 0;
  padding: 12px;
  border-radius: 8px;
  background: #0a0e18;
  border: 1px solid #25304a;
  overflow: auto;
  white-space: pre-wrap;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
}