.randomisation-generator-page {
  gap: 18px;
  max-width: 1380px;
  padding-top: 18px;
}

.randomisation-generator-page .sr-only {
  border: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

.randomisation-generator-page .title-row,
.randomisation-generator-page .treatments-heading-row,
.randomisation-generator-page .strata-heading-row,
.randomisation-generator-page .preview-heading {
  align-items: flex-start;
  display: flex;
  gap: 16px;
  justify-content: space-between;
}

.randomisation-generator-page .title-row .status-badge {
  flex: 0 0 auto;
  margin-top: 8px;
}

.randomisation-generator-page .scope-notice {
  background: #f5f1fb;
  border: 1px solid #d9c8eb;
  border-left: 4px solid #8654ad;
  border-radius: 7px;
  color: var(--color-ink);
  padding: 14px 16px;
}

.randomisation-generator-page .scope-notice p {
  margin: 0;
}

.randomisation-generator-page .scope-notice p + p {
  margin-top: 10px;
}

.randomisation-generator-page .randomisation-layout {
  align-items: start;
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1fr);
}

.randomisation-generator-page .randomisation-form,
.randomisation-generator-page .randomisation-results {
  min-width: 0;
}

.randomisation-generator-page .randomisation-form {
  padding: 0;
}

.randomisation-generator-page .form-section {
  border-bottom: 1px solid var(--color-border);
  padding: 24px;
}

.randomisation-generator-page .form-section:last-of-type {
  border-bottom: 0;
}

.randomisation-generator-page .two-column-fields {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.randomisation-generator-page .field-group {
  margin-bottom: 16px;
}

.randomisation-generator-page .field-group:last-child {
  margin-bottom: 0;
}

.randomisation-generator-page .method-random-row {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.randomisation-generator-page .method-random-row.single-control {
  grid-template-columns: minmax(0, 1fr);
}

.randomisation-generator-page .method-random-row label {
  display: block;
  height: 49px;
}

.randomisation-generator-page .method-random-row input,
.randomisation-generator-page .method-random-row select {
  margin: 6px 0 0;
}

.randomisation-generator-page .method-random-row select {
  margin-top: 4px;
}

.randomisation-generator-page [data-random-block-settings] input {
  margin-top: -6px;
}

.randomisation-generator-page label,
.randomisation-generator-page legend {
  color: var(--color-ink);
  font-weight: 700;
}

.randomisation-generator-page input[type="text"],
.randomisation-generator-page input[type="number"],
.randomisation-generator-page select {
  background: #fff;
  border: 1px solid #c9cdd3;
  border-radius: 6px;
  color: var(--color-ink);
  font: inherit;
  min-height: 46px;
  padding: 9px 12px;
  width: 100%;
}

.randomisation-generator-page input:focus,
.randomisation-generator-page select:focus,
.randomisation-generator-page button:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.randomisation-generator-page [aria-invalid="true"] {
  border-color: #a62e2e !important;
}

.randomisation-generator-page .treatments-heading-row {
  align-items: flex-end;
  display: flex;
  gap: 16px;
  justify-content: space-between;
}

.randomisation-generator-page .treatments-heading-row h3 {
  margin-bottom: 0;
}

.randomisation-generator-page .treatment-table-wrap {
  display: block;
  margin-top: 12px;
  min-width: 0;
  overflow-x: auto;
  width: 100%;
}

.randomisation-generator-page .treatment-table {
  min-width: 620px;
  table-layout: fixed;
}

.randomisation-generator-page .treatment-table th:first-child {
  width: 64px;
}

.randomisation-generator-page .treatment-table th:nth-child(3) {
  width: 120px;
}

.randomisation-generator-page .treatment-table th:last-child {
  width: 100px;
}

.randomisation-generator-page .treatment-table input {
  margin: 0;
  min-width: 0;
}

.randomisation-generator-page .help-text {
  color: var(--color-muted);
  font-size: 0.9rem;
  margin: 6px 0 0;
}

.randomisation-generator-page .field-error {
  color: #9b2424;
  font-size: 0.88rem;
  font-weight: 700;
  margin: 5px 0 0;
  min-height: 1.25em;
}

.randomisation-generator-page .checkbox-row {
  align-items: flex-start;
  background: var(--color-soft);
  border: 1px solid var(--color-border);
  border-radius: 7px;
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
  padding: 13px;
}

.randomisation-generator-page .checkbox-row input {
  accent-color: var(--color-primary);
  margin-top: 0.25em;
}

.randomisation-generator-page .checkbox-row small {
  color: var(--color-muted);
  display: block;
  font-weight: 400;
  margin-top: 3px;
}

.randomisation-generator-page .strata-heading-row h3,
.randomisation-generator-page .preview-heading h3 {
  margin-bottom: 0;
}

.randomisation-generator-page .seed-input-row {
  align-items: stretch;
  display: grid;
  gap: 10px;
  grid-template-columns: minmax(0, 1fr) auto;
  margin-top: 6px;
  width: 100%;
}

.randomisation-generator-page .seed-input-row input {
  margin: 0;
}

.randomisation-generator-page .seed-input-row .button-secondary {
  white-space: nowrap;
}

.randomisation-generator-page .strata-table input {
  margin: 0;
  min-width: 120px;
}

.randomisation-generator-page .strata-table td:last-child {
  text-align: right;
  width: 1%;
}

.randomisation-generator-page .compact-button {
  min-height: 38px;
  padding: 7px 11px;
  white-space: nowrap;
}

.randomisation-generator-page .remove-stratum,
.randomisation-generator-page .remove-treatment {
  background: transparent;
  border: 1px solid #ae4444;
  border-radius: 5px;
  color: #8f2525;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  min-height: 38px;
  padding: 6px 10px;
}

.randomisation-generator-page .remove-treatment:disabled,
.randomisation-generator-page [data-add-treatment]:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  transform: none;
}

.randomisation-generator-page .form-actions {
  display: flex;
  gap: 12px;
  padding: 22px 24px 24px;
}

.randomisation-generator-page .button-primary,
.randomisation-generator-page .button-secondary {
  align-items: center;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-weight: 800;
  justify-content: center;
  min-height: 44px;
  padding: 9px 14px;
}

.randomisation-generator-page .button-primary {
  background: linear-gradient(90deg, #21818a, #8654ad);
  border: 0;
  color: #fff;
}

.randomisation-generator-page .button-secondary {
  background: #fff;
  border: 1px solid var(--color-primary);
  color: var(--color-primary-strong);
}

.randomisation-generator-page .button-primary:hover,
.randomisation-generator-page .button-secondary:hover {
  box-shadow: 0 7px 18px rgba(33, 61, 76, 0.13);
  transform: translateY(-1px);
}

.randomisation-generator-page .randomisation-results {
  min-height: 280px;
}

.randomisation-generator-page .result-summary-panel {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 18px;
}

.randomisation-generator-page .result-summary-item {
  background: var(--color-soft);
  border: 1px solid var(--color-border);
  border-radius: 7px;
  display: grid;
  gap: 3px;
  padding: 13px;
}

.randomisation-generator-page .result-summary-item span {
  color: var(--color-muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.randomisation-generator-page .result-summary-item strong {
  color: var(--color-primary-strong);
  font-size: 1.35rem;
}

.randomisation-generator-page .compact-warning {
  margin-bottom: 20px;
}

.randomisation-generator-page .error-summary {
  background: #fff1f1;
  border: 1px solid #d79a9a;
  border-left: 4px solid #a62e2e;
  border-radius: 6px;
  padding: 13px 16px;
}

.randomisation-generator-page .error-summary h3 {
  color: #7c2020;
  margin-top: 0;
}

.randomisation-generator-page .calculator-output-block,
.randomisation-generator-page .calculator-wording,
.randomisation-generator-page .download-panel {
  border-top: 1px solid var(--color-border);
  margin-top: 20px;
  padding-top: 20px;
}

.randomisation-generator-page .calculator-table {
  font-size: 0.93rem;
}

.randomisation-generator-page .preview-heading [data-preview-count] {
  background: var(--color-soft);
  border-radius: 999px;
  color: var(--color-primary-strong);
  font-size: 0.82rem;
  font-weight: 800;
  padding: 5px 9px;
  white-space: nowrap;
}

.randomisation-generator-page .calculator-wording-header {
  align-items: center;
  display: flex;
  gap: 12px;
  justify-content: space-between;
}

.randomisation-generator-page .download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 12px;
}

.randomisation-generator-page [hidden] {
  display: none !important;
}

@media (max-width: 640px) {
  .randomisation-generator-page .title-row,
  .randomisation-generator-page .treatments-heading-row,
  .randomisation-generator-page .strata-heading-row,
  .randomisation-generator-page .preview-heading,
  .randomisation-generator-page .calculator-wording-header {
    align-items: stretch;
    flex-direction: column;
  }

  .randomisation-generator-page .treatment-table-wrap {
    max-width: 100%;
  }

  .randomisation-generator-page .method-random-row label {
    height: auto;
  }

  .randomisation-generator-page [data-random-block-settings] input {
    margin-top: 6px;
  }

  .randomisation-generator-page .seed-input-row {
    grid-template-columns: minmax(0, 1fr) auto;
    width: 100%;
  }

  .randomisation-generator-page .seed-input-row .button-secondary {
    font-size: 0.86rem;
    padding-inline: 10px;
  }

  .randomisation-generator-page .two-column-fields,
  .randomisation-generator-page .method-random-row,
  .randomisation-generator-page .result-summary-panel {
    grid-template-columns: 1fr;
  }

  .randomisation-generator-page .form-section,
  .randomisation-generator-page .form-actions {
    padding: 18px;
  }

  .randomisation-generator-page .form-actions,
  .randomisation-generator-page .download-actions {
    flex-direction: column;
  }

  .randomisation-generator-page .form-actions button,
  .randomisation-generator-page .download-actions button {
    width: 100%;
  }
}