:root {
  --rc-accent: #0f766e;
  --rc-accent-2: #1d4ed8;
  --rc-shell: linear-gradient(180deg, #eff6ff 0%, #ffffff 54%);
  --rc-border: #bfdbfe;
  --rc-note: #475569;
  --rc-muted: #64748b;
  --rc-result-bg: linear-gradient(180deg, #eff6ff 0%, #f0fdf4 100%);
  --rc-warn-bg: #fff7ed;
  --rc-warn-border: #fdba74;
  --rc-error-bg: #fef2f2;
  --rc-error-border: #fca5a5;
}

.rc-shell {
  border: 1px solid var(--rc-border);
  background:
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.12), transparent 18rem),
    radial-gradient(circle at left center, rgba(16, 185, 129, 0.12), transparent 18rem),
    var(--rc-shell);
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--rc-accent-2);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.rc-tabs,
.rc-example-row,
.rc-button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.rc-tabs {
  margin-bottom: 16px;
}

.rc-tabs .button.active {
  background: linear-gradient(135deg, var(--rc-accent), var(--rc-accent-2));
  border-color: var(--rc-accent);
  color: #fff;
}

.rc-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.95fr);
}

.rc-card,
.rc-subcard {
  background: #fff;
  border: 1px solid var(--border, #dbe3f0);
  border-radius: 16px;
  padding: 18px;
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.05);
}

.rc-heading-row {
  display: grid;
  gap: 10px;
  margin-bottom: 14px;
}

.rc-mini-grid,
.rc-compare-grid {
  display: grid;
  gap: 12px;
}

.rc-mini-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.rc-compare-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-bottom: 12px;
}

.rc-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rc-summary-grid {
  display: grid;
  gap: 10px;
}

.rc-summary-item {
  border: 1px solid var(--border, #dbe3f0);
  border-radius: 14px;
  padding: 14px;
  background: #fff;
}

.rc-summary-item--primary {
  background: var(--rc-result-bg);
}

.rc-summary-item--full {
  grid-column: 1 / -1;
}

.rc-summary-label {
  display: block;
  color: var(--rc-muted);
  font-size: 0.92rem;
}

.rc-summary-value {
  display: block;
  margin-top: 4px;
  font-size: 1.5rem;
  font-weight: 800;
  color: #0f172a;
}

.rc-summary-note,
.rc-note {
  color: var(--rc-note);
}

.rc-message {
  margin-bottom: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid transparent;
}

.rc-message ul {
  margin: 0;
  padding-left: 18px;
}

.rc-message--warn {
  background: var(--rc-warn-bg);
  border-color: var(--rc-warn-border);
}

.rc-message--error {
  background: var(--rc-error-bg);
  border-color: var(--rc-error-border);
}

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

.rc-table th,
.rc-table td {
  padding: 10px 8px;
  border-bottom: 1px solid var(--border, #dbe3f0);
  text-align: left;
  vertical-align: top;
}

.rc-table th {
  font-size: 0.9rem;
  color: var(--rc-muted);
}

@media (max-width: 940px) {
  .rc-grid {
    grid-template-columns: 1fr;
  }
}