.critical-css-page {
  max-width: var(--tool-page-max-width);
  margin: 0 auto;
  padding: 0 var(--tool-page-padding);
}

.critical-css-page .intro {
  margin-bottom: 2.5rem;
  line-height: 1.7;
  font-size: var(--font-size-body);
}

.seo-content {
  margin-bottom: var(--size-four);
  padding-bottom: var(--size-three);
  font-size: var(--font-size-body);
}

.seo-content h1 {
  margin-top: 0;
}

.seo-content h2 {
  margin: var(--space-heading-top) 0 1rem 0;
  font-size: var(--font-size-h3);
}

.seo-content h3 {
  font-size: var(--font-size-h4);
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.seo-content p {
  line-height: 1.7;
}

.seo-content ul {
  margin-bottom: var(--size-four);
  padding-left: var(--size-four);
}

.seo-content li {
  margin-bottom: var(--size-two);
  line-height: 1.6;
}

.seo-content a {
  color: var(--color-text-link);
}

.seo-content code {
  background: var(--color-surface-elevated);
  padding: 0.15rem 0.35rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-bodyl);
}

.tool-section {
  border-top: 1px solid oklab(1 0 0 / 0.12);
  padding-top: var(--size-five);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--size-two);
}

.form-group label {
  font-size: var(--font-size-label);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.form-group--upload {
  display: flex;
  flex-direction: column;
  gap: var(--size-two);
}

.upload-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--size-two);
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--color-text-main);
  border-radius: var(--radius-md);
  background: var(--color-white);
  color: var(--color-black);
  font-size: var(--font-size-button);
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  line-height: 1.4;
  min-height: var(--button-min-height);
}

/* ── Preset dropdown ── */
.preset-select {
  position: relative;
  width: 100%;
  @media (min-width: 768px) {
    width: auto;
  }
}

.preset-select__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--size-two);
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-text-main);
  border-radius: var(--radius-md);
  background: var(--color-white);
  color: var(--color-black);
  font-size: var(--font-size-button);
  line-height: 1.4;
  font-family: inherit;
  cursor: pointer;
  text-align: left;
}

.preset-select__trigger:focus {
  outline: 3px solid var(--color-coral);
  outline-offset: var(--size-one);
}

.preset-select__arrow {
  font-size: var(--font-size-caption);
  opacity: 0.5;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.preset-select__trigger[aria-expanded='true'] .preset-select__arrow {
  transform: rotate(180deg);
}

.preset-select__listbox {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  z-index: 10;
  margin: 0;
  padding: 0.375rem 0;
  list-style: none;
  background: var(--color-white);
  border: 2px solid var(--color-text-main);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 24px oklab(0 0 0 / 0.12);
  max-height: 280px;
  overflow-y: auto;
}

.preset-select__listbox[hidden] {
  display: none;
}

.preset-select__listbox [role='option'] {
  padding: 0.625rem 1rem;
  font-size: var(--font-size-button);
  color: var(--color-black);
  line-height: 1.4;
  cursor: pointer;
  user-select: none;
}

.preset-select__listbox [role='option']:hover {
  background: var(--color-surface-elevated);
}

.preset-select__listbox [role='option'][aria-selected='true'] {
  font-weight: 700;
  background: oklab(1 0 0 / 0.04);
}

.preset-select__listbox [role='option'].preset-option--focus {
  outline: 2px solid var(--color-coral);
  outline-offset: -2px;
}

/* ── End preset dropdown ── */

.upload-trigger:hover {
  border-color: var(--color-coral);
  color: var(--color-coral);
}

.upload-trigger:focus {
  outline: 3px solid var(--color-coral);
  outline-offset: var(--size-one);
}

.upload-status {
  margin: 0;
  font-size: var(--font-size-body);
  line-height: 1.5;
  min-height: 1.5em;
}

.upload-status[hidden] {
  display: none;
}

.upload-status--info {
  color: oklab(1 0 0 / 0.7);
}

.upload-status--success {
  color: var(--color-green-500);
  font-weight: 700;
}

.upload-status--error {
  color: var(--color-red-400);
  font-weight: 700;
}

.form-group input[type='url'],
.form-group input[type='text'],
.form-group input[type='number'],
.form-group select {
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-text-main);
  border-radius: var(--radius-md);
  background: var(--color-white);
  color: var(--color-black);
  font-size: var(--font-size-button);
  line-height: 1.4;
  font-family: inherit;
  box-sizing: border-box;
  @media (min-width: 768px) {
    width: 100%;
  }
}

.form-group input:focus,
.form-group select:focus {
  outline: 3px solid var(--color-coral);
  outline-offset: var(--size-one);
}

.form-group input::placeholder {
  color: var(--color-placeholder);
}

button[type='submit'] {
  display: flex;
  align-items: center;
  gap: var(--size-two);
  padding: 0.75rem 1.5rem;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  background: var(--color-coral);
  color: var(--color-white);
  font-size: var(--font-size-button);
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  line-height: 1.4;
  white-space: nowrap;
  min-height: var(--button-min-height);
}

button[type='submit']:focus {
  outline: 3px solid var(--color-coral);
  outline-offset: var(--size-one);
}

button[type='submit']:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-loading {
  display: none;
  align-items: center;
  gap: var(--size-two);
}

button[type='submit'].loading .btn-label {
  display: none;
}

button[type='submit'].loading .btn-loading {
  display: flex;
}

.spinner {
  width: var(--spinner-size);
  height: var(--spinner-size);
  animation: spin 0.9s linear infinite;
  flex-shrink: 0;
}

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

@media (prefers-reduced-motion: reduce) {
  .spinner {
    animation: none;
  }
}

.error-message {
  color: var(--color-red-600);
  font-weight: 700;
  margin-bottom: 1.25rem;
  font-size: var(--font-size-body);
}

.code-block {
  background: var(--color-surface-elevated);
  color: var(--color-text-main);
  padding: var(--size-four);
  border-radius: var(--radius-xl);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: var(--font-size-bodyl);
  line-height: 1.7;
  margin: 0;
  max-height: var(--code-block-max-height);
  overflow-y: auto;
  border: 1px solid oklab(1 0 0 / 0.08);
}

.copy-btn {
  padding: 0.3rem 0.75rem;
  border: 1px solid oklab(1 0 0 / 0.3);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-text-main);
  font-size: var(--font-size-caption);
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}

.copy-btn:hover {
  background: oklab(1 0 0 / 0.08);
}

.copy-btn:focus {
  outline: 2px solid var(--color-coral);
  outline-offset: var(--size-one);
}

.copy-btn.copied {
  border-color: var(--color-green-500);
  color: var(--color-green-500);
}

.css-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: var(--size-five);
}

.css-form button[type='submit'] {
  align-self: flex-start;
}

.form-group--checkbox label {
  display: flex;
  align-items: center;
  gap: var(--size-two);
  font-weight: 400;
  cursor: pointer;
}

.form-group--checkbox input[type='checkbox'] {
  width: 1.125rem;
  height: 1.125rem;
  accent-color: var(--color-coral);
  flex-shrink: 0;
}

.advanced-options {
  border: 1px solid oklab(1 0 0 / 0.15);
  border-radius: var(--radius-lg);
  padding: 0.75rem 1rem;
}

.advanced-toggle {
  font-size: var(--font-size-label);
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  user-select: none;
  background: none;
  border: none;
  color: inherit;
  padding: 0;
  font-family: inherit;
  text-align: left;
  width: 100%;
}

.advanced-toggle::before {
  content: '▶ ';
  font-size: var(--font-size-caption);
  opacity: 0.7;
}

.advanced-toggle[aria-expanded='true']::before {
  content: '▼ ';
}

.advanced-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--size-three);
  margin-top: var(--size-three);
}

.advanced-grid[hidden] {
  display: none;
}

@media (max-width: 480px) {
  .advanced-grid {
    grid-template-columns: 1fr;
  }
}

.form-group--checkbox {
  grid-column: 1 / -1;
}

.critical-result {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid oklab(1 0 0 / 0.12);
}

.critical-result:not([hidden]) {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.confidence-section {
  display: flex;
  flex-direction: column;
  gap: var(--size-three);
}

.confidence-badge {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  width: fit-content;
}

.confidence-badge.confidence--green {
  background: var(--color-green-900);
  border-color: var(--color-green-500);
  box-shadow: 0 0 24px oklab(0.737 0.17 0.143 / 0.2);
}

.confidence-badge.confidence--amber {
  background: var(--color-amber-900);
  border-color: var(--color-amber-500);
  box-shadow: 0 0 24px oklab(0.785 0.115 0.135 / 0.2);
}

.confidence-badge.confidence--red {
  background: var(--color-red-900);
  border-color: var(--color-red-500);
  box-shadow: 0 0 24px oklab(0.627 0.178 0.114 / 0.2);
}

.confidence-score {
  font-size: var(--font-size-display);
  font-weight: 800;
  line-height: 1;
}

.confidence-label {
  font-size: var(--font-size-body);
  font-weight: 700;
  opacity: 0.85;
}

.confidence-explanation {
  margin: 0;
  line-height: 1.65;
  font-size: var(--font-size-body);
  opacity: 0.9;
}

.edge-cases-section {
  font-size: var(--font-size-body);
}

.edge-cases-none {
  display: flex;
  align-items: center;
  gap: var(--size-two);
  padding: 0.875rem 1.25rem;
  background: var(--color-green-900);
  border: 1px solid var(--color-green-500);
  border-radius: var(--radius-lg);
  font-weight: 700;
  font-size: var(--font-size-bodyl);
}

.edge-cases-list {
  padding: 1.25rem;
  background: var(--color-amber-900);
  border: 1px solid var(--color-amber-500);
  border-radius: var(--radius-lg);
}

.edge-cases-list h3 {
  margin: 0 0 0.75rem 0;
  font-size: var(--font-size-label);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  opacity: 0.85;
}

.edge-cases-list ul {
  margin: 0;
  padding: 0 0 0 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.edge-cases-list li {
  font-size: var(--font-size-bodyl);
  line-height: 1.55;
}

.stats-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--size-three);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.875rem 1.25rem;
  background: var(--color-surface-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid oklab(1 0 0 / 0.08);
  min-width: 120px;
}

.stat-label {
  font-size: var(--font-size-caption);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  opacity: 0.65;
}

.stat-value {
  font-size: var(--font-size-bodyl);
  font-weight: 700;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--size-three);
  margin-bottom: 0.75rem;
}

.section-header h2 {
  margin: 0;
  font-size: var(--font-size-h4);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  opacity: 0.9;
}

.section-header h2 small {
  font-size: var(--font-size-caption);
  font-weight: 400;
  opacity: 0.65;
  text-transform: none;
  letter-spacing: 0;
  margin-left: var(--size-two);
}

.guide-section,
.css-section {
  display: flex;
  flex-direction: column;
}

.footer-meta {
  font-size: var(--font-size-caption);
  opacity: 0.55;
  margin: 0;
  font-style: italic;
}

@media (max-width: 374px) {
  .critical-css-page {
    word-wrap: break-word;
    overflow-x: hidden;
  }

  .stats-bar {
    flex-direction: column;
  }
}