* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: #f5f7fa;
  color: #1f2933;
}
header {
  padding: 24px 32px;
  background: #0d3b66;
  color: #fff;
}
header h1 { margin: 0; font-size: 24px; }
.subtitle { margin: 4px 0 0; opacity: 0.85; font-size: 14px; }
main {
  max-width: 1100px;
  margin: 24px auto;
  padding: 0 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.panel {
  background: #fff;
  border: 1px solid #e4e7eb;
  border-radius: 8px;
  padding: 16px;
}
.panel h2 { margin: 0 0 12px; font-size: 16px; }
label {
  display: block;
  font-size: 13px;
  margin-bottom: 12px;
}
label.inline { display: flex; align-items: center; gap: 8px; }
input[type=text] {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #cbd2d9;
  border-radius: 6px;
  font-size: 14px;
  margin-top: 4px;
}
textarea {
  width: 100%;
  height: 360px;
  font-family: ui-monospace, "Cascadia Mono", Menlo, monospace;
  font-size: 12px;
  padding: 10px;
  border: 1px solid #cbd2d9;
  border-radius: 6px;
  resize: vertical;
}
iframe {
  width: 100%;
  height: 360px;
  border: 1px solid #cbd2d9;
  border-radius: 6px;
  background: #fff;
}
.actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}
button {
  padding: 10px 16px;
  border: 1px solid #cbd2d9;
  background: #fff;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
}
button.primary {
  background: #0d3b66;
  border-color: #0d3b66;
  color: #fff;
}
.status {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 13px;
  min-height: 20px;
}
.status.ok { color: #157f1f; }
.status.err { color: #b00020; }
.hint { font-size: 12px; color: #52606d; margin: 0 0 8px; }
.hint code { background: #eef1f5; padding: 1px 4px; border-radius: 3px; }