:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #51627a;
  --border: #cdd6e3;
  --focus: #0056d6;
  --error-bg: #fdecec;
  --error-border: #f5b7b1;
  --error-text: #8f1d18;
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f7faff 0%, #ecf1f9 100%);
}

.app {
  max-width: 980px;
  margin: 0 auto;
  padding: 1.25rem;
  display: grid;
  gap: 1rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}

label {
  font-weight: 700;
}

textarea,
button {
  font: inherit;
}

textarea {
  width: 100%;
  margin-top: 0.45rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem;
  resize: vertical;
}

.actions {
  margin-top: 0.7rem;
  display: flex;
  gap: 0.5rem;
}

button {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
}

button:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.error {
  min-height: 1.35rem;
  margin-top: 0.7rem;
  border-radius: 8px;
  padding: 0.45rem 0.6rem;
}

.error.active {
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
}

.field-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 0.75rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid #e9eef5;
}

.field-row span {
  color: var(--muted);
}

code {
  white-space: pre-wrap;
  word-break: break-word;
}

.query-block {
  margin-top: 0.8rem;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  border-bottom: 1px solid #e9eef5;
  padding: 0.45rem;
}

@media (max-width: 640px) {
  .field-row {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}