.st-form {
  display: flex; flex-direction: column; gap: 10px;
  border: 1px solid var(--twb-border); border-radius: 6px;
  background: var(--twb-bg-1);
  padding: 16px;
  margin: 14px 0;
}
.st-row { display: flex; align-items: center; gap: 12px; }
.st-row > label:first-child { flex: 0 0 130px; }
.st-inline { display: flex; align-items: center; gap: 8px; flex: 1; }
.st-unit { color: var(--twb-text-soft); font-size: 13px; }

.st-form input[type="text"],
.st-form input[type="number"],
.st-form input[type="time"],
.st-form input[type="date"],
.st-form select {
  background: var(--twb-bg-0); color: var(--twb-text-normal);
  border: 1px solid var(--twb-border); border-radius: 6px;
  font-family: var(--twb-font-mono); font-size: 13px;
  padding: 5px 10px;
}
.st-form input[type="text"] { flex: 1; }
.st-form input[type="number"] { width: 90px; }
.st-form input:focus, .st-form select:focus {
  outline: none; border-color: var(--twb-accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--twb-accent) 25%, transparent);
}
.st-check { display: flex; align-items: center; gap: 8px; font-size: 13.5px; }
.st-check input { accent-color: var(--twb-accent); }

.st-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.st-chip input { display: none; }
.st-chip span {
  display: inline-block; cursor: pointer;
  font-family: var(--twb-font-mono); font-size: 12px;
  border: 1px solid var(--twb-border); border-radius: 4px;
  background: var(--twb-bg-0); color: var(--twb-text-soft);
  padding: 2px 8px;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease;
}
.st-chip input:checked + span {
  background: color-mix(in srgb, var(--twb-accent) 15%, transparent);
  border-color: color-mix(in srgb, var(--twb-accent) 40%, var(--twb-border));
  color: var(--twb-accent);
}

.st-short { flex: 1; min-width: 0; }
.st-short-line { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.st-short-line code { color: var(--twb-accent-alt); word-break: break-all; }
.st-short-btn {
  font-family: var(--twb-font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.06em;
  background: color-mix(in srgb, var(--twb-accent-alt) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--twb-accent-alt) 30%, var(--twb-border));
  border-radius: 4px; color: var(--twb-accent-alt);
  padding: 2px 8px; cursor: pointer;
  transition: background 120ms ease, color 120ms ease;
}
.st-short-btn:hover { background: var(--twb-accent-alt); color: var(--twb-text-on-accent); }
.st-verify { word-break: break-all; }

.st-error {
  margin: 14px 0; padding: 10px 14px;
  border: 1px solid color-mix(in srgb, var(--twb-red) 34%, var(--twb-border));
  border-left: 3px solid var(--twb-red);
  background: color-mix(in srgb, var(--twb-red) 9%, var(--twb-bg-0));
  border-radius: 6px;
  font-family: var(--twb-font-mono); font-size: 13px;
}
.st-error div { padding: 1px 0; }

.st-summary {
  margin: 14px 0; padding: 10px 14px;
  border: 1px solid color-mix(in srgb, var(--twb-accent) 34%, var(--twb-border));
  border-left: 3px solid var(--twb-accent);
  background: color-mix(in srgb, var(--twb-accent) 9%, var(--twb-bg-0));
  border-radius: 6px;
  font-size: 14px;
}

#st-output { white-space: pre-wrap; word-break: break-all; }
.st-note { color: var(--twb-text-muted); font-size: 12.5px; }

/* --- Last Run Result code reference --- */
.rc-section { margin-top: 40px; border-top: 1px solid var(--twb-border); padding-top: 8px; }
.rc-section > p { color: var(--twb-text-soft); font-size: 14px; }

.rc-controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: stretch; }
#rc-input {
  flex: 1 1 260px; min-width: 0;
  background: var(--twb-bg-1); color: var(--twb-text-normal);
  border: 1px solid var(--twb-border); border-radius: 6px;
  font-family: var(--twb-font-mono); font-size: 15px; padding: 10px 12px;
}
#rc-input:focus {
  outline: none; border-color: var(--twb-accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--twb-accent) 25%, transparent);
}
.rc-controls select {
  background: var(--twb-bg-1); color: var(--twb-text-normal);
  border: 1px solid var(--twb-border); border-radius: 6px;
  font-family: var(--twb-font-mono); font-size: 13px; padding: 0 10px; cursor: pointer;
}
.rc-controls select:focus { outline: none; border-color: var(--twb-accent); }

.rc-count { color: var(--twb-text-muted); font-size: 12.5px; margin: 10px 0 6px; }
.rc-empty { color: var(--twb-text-muted); font-style: italic; padding: 12px 0; }

.rc-table-wrap {
  max-height: 620px; overflow-y: auto;
  border: 1px solid var(--twb-border); border-radius: 6px;
}
/* border-collapse: collapse breaks position: sticky (collapsed borders don't
   travel with the stuck header, so rows bleed through the seam); separate
   borders stick with the cell. Top borders dropped so row lines don't double. */
#rc-table { margin: 0; width: 100%; border: none; border-collapse: separate; border-spacing: 0; }
#rc-table th { position: sticky; top: 0; z-index: 1; }
#rc-table th, #rc-table td { border-left: none; border-right: none; border-top: none; }
#rc-table td { vertical-align: top; }
.rc-code-col { width: 1%; white-space: nowrap; }
.rc-sev-col { width: 1%; white-space: nowrap; text-align: center; }
#rc-table tbody td:nth-child(4) { text-align: center; }

.rc-code {
  font-family: var(--twb-font-mono); font-size: 13.5px;
  color: var(--twb-accent); white-space: nowrap;
}
.rc-const { font-family: var(--twb-font-mono); font-size: 12px; color: var(--twb-text-muted); }
.rc-generic { font-size: 12px; font-style: italic; color: var(--twb-text-muted); }
.rc-meaning { font-size: 13.5px; }
.rc-fix { display: block; margin-top: 4px; color: var(--twb-text-soft); font-size: 12.5px; }
.rc-fix::before {
  content: "fix"; margin-right: 7px;
  font-family: var(--twb-font-mono); font-size: 10px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.07em; color: var(--twb-accent-alt);
}

.rc-sev {
  font-family: var(--twb-font-mono); font-size: 10.5px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.05em;
  border: 1px solid currentColor; border-radius: 4px; padding: 0 6px;
  white-space: nowrap;
}
.rc-sev-high { color: var(--twb-red); }
.rc-sev-medium { color: var(--twb-orange); }
.rc-sev-low { color: var(--twb-accent-alt); }
.rc-sev-info { color: var(--twb-text-muted); }