.sm-scope {
  --gap: 14px;
  --radius: 12px;
  --b: #e6e8ec;
  --bg: #fff;
  --txt: #111;
  --muted: #6b7280;
  --brand: #0ea5e9;
}

.sm-scope .sm-card {
  background: var(--bg);
  border: 1px solid var(--b);
  border-radius: var(--radius);
  padding: 18px;
}

.sm-scope .sm-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
}

.sm-scope label.sm-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  color: var(--muted);
}

.sm-scope select {
  appearance: none;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--b);
  border-radius: 10px;
  background: #fff;
  color: var(--txt);
}

.sm-scope select:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, .15);
}

.sm-scope .sm-help {
  margin-top: 10px;
  font-size: 12px;
  color: var(--muted);
}

.sm-scope .sm-result {
  margin-top: 16px;
}

.sm-scope .sm-frame {
  width: 100%;
  height: min(80vh, 900px);
  border: 0;
  border-radius: 10px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .06);
}

.sm-scope .sm-status {
  padding: 14px;
  border: 1px dashed var(--b);
  border-radius: 10px;
  color: var(--muted);
  text-align: center;
}

.sm-scope .sm-spinner {
  width: 20px;
  height: 20px;
  border: 3px solid var(--b);
  border-top-color: var(--brand);
  border-radius: 50%;
  display: inline-block;
  animation: smspin .9s linear infinite;
  margin-right: 8px;
  vertical-align: -4px;
}

@keyframes smspin {
  to { transform: rotate(360deg); }
}

@media (max-width: 800px) {
  .sm-scope .sm-grid {
    grid-template-columns: 1fr;
  }
}