/* Vital SEO — Heading Structure & Topical Relevance Analyser */
/* Tool-specific presentation only. Existing shared styles remain unchanged. */

.heading-topical-layout {
  --heading-blue: #2788cb;
  --heading-teal: #36a5ad;
  --heading-purple: #7778c9;
  --heading-gold: #d6a441;
  --heading-border: rgba(80, 125, 165, .23);
  --heading-soft: rgba(39, 136, 203, .055);
}

.heading-topical-layout *,
.heading-topical-layout *::before,
.heading-topical-layout *::after {
  box-sizing: border-box;
}

.heading-topical-layout #headingTopicalForm {
  display: grid;
  gap: 14px;
}

.heading-topical-layout #headingTopicalForm label {
  font-weight: 650;
}

.heading-topical-layout #headingTargetTopic {
  width: 100%;
  min-width: 0;
  padding: 13px 15px;
  border: 1px solid var(--heading-border);
  border-radius: 10px;
  font: inherit;
  color: inherit;
  background: transparent;
}

.heading-topical-layout #headingTargetTopic:focus-visible,
.heading-topical-layout .heading-level-filters button:focus-visible,
.heading-topical-layout .heading-export-controls button:focus-visible {
  outline: 3px solid var(--heading-blue);
  outline-offset: 3px;
}

.heading-topical-layout #headingTopicalResults {
  margin-top: 30px;
}

.heading-topical-layout #headingTopicalResults[hidden],
.heading-topical-layout #headingCloudEmpty[hidden],
.heading-topical-layout #headingTruncatedNotice[hidden] {
  display: none !important;
}

.heading-topical-layout #headingTopicalSummary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}

.heading-topical-layout #headingTopicalSummary > div {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  border: 1px solid var(--heading-border);
  border-radius: 0;
  background: var(--heading-soft);
}

.heading-topical-layout #headingTopicalSummary strong {
  font-size: clamp(1.45rem, 2.4vw, 2.1rem);
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
}

.heading-topical-layout #headingTopicalSummary span {
  font-size: .86rem;
  line-height: 1.4;
}

.heading-topical-layout #headingTopicalResults > section {
  margin-block: 30px;
}

.heading-topical-layout #headingTopicalResults h3 {
  margin-bottom: 12px;
}

.heading-topical-layout .heading-level-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0;
}

.heading-topical-layout .heading-level-filters button {
  padding: 9px 15px;
  border: 1px solid var(--heading-border);
  border-radius: 10px;
  background: transparent;
  color: inherit;
  font: inherit;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color .2s ease, border-color .2s ease,
    box-shadow .2s ease;
}

.heading-topical-layout .heading-level-filters button[aria-pressed="true"] {
  color: #fff;
  border-color: var(--heading-blue);
  background: var(--heading-blue);
}

.heading-topical-layout .heading-level-filters button:hover {
  box-shadow: 0 3px 12px rgba(39, 136, 203, .13);
}

.heading-topical-layout .heading-cloud-frame {
  position: relative;
  min-height: 260px;
  padding: 14px;
  border: 1px solid var(--heading-border);
  border-radius: 0;
  background: var(--heading-soft);
  overflow: hidden;
}

.heading-topical-layout #headingWordCloud {
  display: block;
  width: 100%;
  height: auto;
  max-height: 480px;
  min-height: 230px;
}

.heading-topical-layout #headingWordCloud text {
  font-family: Inter, system-ui, sans-serif;
  font-weight: 650;
  cursor: default;
  transition: opacity .18s ease;
}

.heading-topical-layout #headingWordCloud text:hover {
  opacity: .7;
}

.heading-topical-layout .heading-distribution-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 22px;
  align-items: start;
}

.heading-topical-layout .heading-distribution-grid > section {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--heading-border);
  border-radius: 0;
  background: var(--heading-soft);
}

.heading-topical-layout .heading-distribution-grid h4 {
  margin: 0 0 16px;
}

.heading-topical-layout #headingDoughnutChart {
  display: block;
  width: 100%;
  max-width: 330px;
  height: auto;
  margin: 0 auto;
  overflow: visible;
}

.heading-topical-layout #headingRankedTerms {
  display: grid;
  gap: 14px;
}

.heading-topical-layout .heading-ranked-item {
  min-width: 0;
}

.heading-topical-layout .heading-ranked-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
  font-size: .89rem;
}

.heading-topical-layout .heading-ranked-label span:first-child {
  overflow-wrap: anywhere;
}

.heading-topical-layout .heading-ranked-label span:last-child {
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.heading-topical-layout .heading-ranked-track {
  width: 100%;
  height: 10px;
  overflow: hidden;
  border-radius: 8px;
  background: rgba(90, 135, 170, .15);
}

.heading-topical-layout .heading-ranked-fill {
  display: block;
  height: 100%;
  min-width: 2px;
  border-radius: inherit;
  background: var(--heading-blue);
}

.heading-topical-layout .heading-table-scroll {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.heading-topical-layout .heading-results-table {
  width: 100%;
  min-width: 590px;
  border-collapse: collapse;
  text-align: left;
  font-size: .9rem;
}

.heading-topical-layout .heading-results-table th,
.heading-topical-layout .heading-results-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--heading-border);
  vertical-align: top;
}

.heading-topical-layout .heading-results-table th {
  font-weight: 700;
  background: var(--heading-soft);
}

.heading-topical-layout .heading-results-table td {
  overflow-wrap: anywhere;
}

.heading-topical-layout .heading-level-tag {
  display: inline-block;
  min-width: 38px;
  padding: 4px 7px;
  border-radius: 6px;
  color: #fff;
  background: var(--heading-blue);
  text-align: center;
  font-size: .8rem;
  font-weight: 700;
}

.heading-topical-layout .heading-finding {
  margin: 10px 0;
  padding: 13px 16px;
  border-left: 3px solid var(--heading-blue);
  background: var(--heading-soft);
  line-height: 1.55;
}

.heading-topical-layout .heading-finding[data-severity="warning"] {
  border-left-color: var(--heading-gold);
}

.heading-topical-layout .heading-finding[data-severity="positive"] {
  border-left-color: var(--heading-teal);
}

.heading-topical-layout #headingMetadataComparison {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.heading-topical-layout .heading-metadata-row {
  padding: 14px 16px;
  border: 1px solid var(--heading-border);
  background: var(--heading-soft);
  overflow-wrap: anywhere;
}

.heading-topical-layout .heading-metadata-row strong {
  display: block;
  margin-bottom: 5px;
}

.heading-topical-layout .heading-export-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.heading-topical-layout .heading-export-controls button {
  cursor: pointer;
}

.heading-topical-layout .heading-export-controls button:disabled {
  cursor: not-allowed;
  opacity: .55;
}

@media (max-width: 760px) {
  .heading-topical-layout #headingTopicalSummary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .heading-topical-layout .heading-distribution-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .heading-topical-layout .heading-distribution-grid > section {
    padding: 16px;
  }

  .heading-topical-layout .heading-cloud-frame {
    padding: 6px;
  }

  .heading-topical-layout #headingWordCloud {
    min-height: 190px;
  }
}

@media (max-width: 420px) {
  .heading-topical-layout #headingTopicalSummary > div {
    padding: 12px;
  }

  .heading-topical-layout .heading-level-filters button {
    padding: 8px 11px;
    font-size: .82rem;
  }

  .heading-topical-layout .heading-export-controls {
    flex-direction: column;
  }

  .heading-topical-layout .heading-export-controls button {
    width: 100%;
  }
}

/* Follow the existing Vital SEO dark-mode selectors. */
html[data-theme="dark"] .heading-topical-layout,
body.dark-mode .heading-topical-layout {
  --heading-border: rgba(155, 191, 225, .24);
  --heading-soft: rgba(89, 149, 204, .09);
}

html[data-theme="dark"] .heading-topical-layout #headingTargetTopic,
body.dark-mode .heading-topical-layout #headingTargetTopic {
  background: rgba(12, 31, 52, .65);
  color: #eef6ff;
  border-color: var(--heading-border);
}

@media (prefers-reduced-motion: reduce) {
  .heading-topical-layout .heading-level-filters button,
  .heading-topical-layout #headingWordCloud text {
    transition: none;
  }
}


/* Heading analyser: contextual SEO recommendations */
.heading-topical-layout .heading-seo-tips-section {
  margin-top: 28px;
}

.heading-topical-layout #headingSeoTips {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.heading-topical-layout .heading-seo-tip {
  --tip-accent: #2788cb;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  margin: 0;
  padding: 20px 22px;
  border: 1px solid var(--heading-border);
  border-left: 4px solid var(--tip-accent);
  border-radius: 0;
  background: var(--heading-soft);
  overflow-wrap: anywhere;
}

.heading-topical-layout .heading-seo-tip[data-severity="high"] {
  --tip-accent: #c46b35;
}

.heading-topical-layout .heading-seo-tip[data-severity="review"] {
  --tip-accent: #c19a3b;
}

.heading-topical-layout .heading-seo-tip[data-severity="positive"] {
  --tip-accent: #358e72;
}

.heading-topical-layout .heading-seo-tip[data-severity="information"] {
  --tip-accent: #2788cb;
}

.heading-topical-layout .heading-seo-tip strong {
  display: block;
  font-size: 1.05rem;
  line-height: 1.4;
  color: inherit;
}

.heading-topical-layout .heading-seo-tip p {
  margin: 0;
  line-height: 1.65;
}

.heading-topical-layout .heading-seo-tip p.tool-help {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--heading-border);
  font-size: .88rem;
  line-height: 1.55;
  opacity: .85;
}

@media (max-width: 760px) {
  .heading-topical-layout #headingSeoTips {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .heading-topical-layout .heading-seo-tip {
    padding: 17px 18px;
  }
}


/* Heading analyser workspace refinements only. */
.heading-topical-layout #tool-heading-topical-relevance-analyser {
  padding-top: 28px !important;
}

.heading-topical-layout #tool-heading-topical-relevance-analyser
  > .tool-star-widget {
  position: static;
  width: max-content;
  max-width: 100%;
  margin: 0 0 16px auto;
}

.heading-topical-layout #tool-heading-topical-relevance-analyser
  > .vital-tool-panel-title {
  margin: 0 0 20px;
}

.heading-topical-layout #tool-heading-topical-relevance-analyser
  > .vital-share-box {
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--heading-border);
}

.heading-topical-layout .vital-share-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--heading-border);
  border-radius: 10px;
  background: var(--heading-soft);
  color: inherit;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.heading-topical-layout .vital-share-toggle:hover {
  border-color: var(--heading-blue);
}

@media (max-width: 760px) {
  .heading-topical-layout #tool-heading-topical-relevance-analyser {
    padding-top: 22px !important;
  }
}


/* Heading analyser title and instructions alignment. */
.heading-topical-layout .heading-analyser-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}

.heading-topical-layout .heading-analyser-title-row
  > .vital-tool-panel-title {
  flex: 1 1 auto;
  min-width: 0;
  margin: 3px 0 0;
}

.heading-topical-layout .heading-analyser-title-row
  > .tool-star-widget {
  position: static;
  flex: 0 0 auto;
  width: max-content;
  max-width: 100%;
  margin: 0;
  display: grid;
  justify-items: center;
  gap: 8px;
}

.heading-topical-layout .heading-analyser-instructions {
  margin: 0 0 26px;
  padding: 15px 18px;
  border: 1px solid var(--heading-border);
  border-radius: 10px;
  background: var(--heading-soft);
}

.heading-topical-layout .heading-analyser-instructions summary {
  cursor: pointer;
  font-weight: 700;
  color: inherit;
}

.heading-topical-layout .heading-analyser-instructions p {
  margin: 14px 0 0;
  line-height: 1.6;
}

@media (max-width: 760px) {
  .heading-topical-layout .heading-analyser-title-row {
    flex-wrap: wrap;
    gap: 14px;
  }

  .heading-topical-layout .heading-analyser-title-row
    > .vital-tool-panel-title {
    flex-basis: 100%;
  }

  .heading-topical-layout .heading-analyser-title-row
    > .tool-star-widget {
    margin-left: auto;
  }
}