/* Reverse DNS Checker — extends domain-health-checker + spf-checker report patterns */

.reverse-dns-checker-page main .container {
  max-width: 1220px;
}

.reverse-dns-checker-page .tool-hero {
  position: relative;
  padding: 56px 0 68px;
  border-bottom: 1px solid var(--color-border-soft);
  overflow: hidden;
}

.reverse-dns-checker-page .tool-hero::after {
  content: "";
  position: absolute;
  inset: -15% -8% -25%;
  background:
    radial-gradient(ellipse 68% 52% at 78% 18%, rgba(56, 189, 248, 0.11) 0%, transparent 58%),
    radial-gradient(ellipse 52% 48% at 12% 82%, rgba(22, 199, 132, 0.09) 0%, transparent 52%);
  pointer-events: none;
  z-index: 0;
}

[data-theme="dark"] .reverse-dns-checker-page .tool-hero::after {
  background:
    radial-gradient(ellipse 68% 52% at 78% 18%, rgba(56, 189, 248, 0.12) 0%, transparent 58%),
    radial-gradient(ellipse 52% 48% at 12% 82%, rgba(34, 197, 94, 0.08) 0%, transparent 52%);
}

.reverse-dns-checker-page .tool-hero-grid {
  position: relative;
  z-index: 1;
  grid-template-columns: 1fr 420px;
  gap: 52px;
  align-items: center;
}

.reverse-dns-checker-page .tool-hero h1 {
  font-size: clamp(2.125rem, 4.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  margin-bottom: 14px;
}

/* Hero helper — IP required note */
.rdns-hero-helper {
  margin-top: 12px;
  max-width: 520px;
}

.rdns-hero-helper-note {
  margin: 0 0 8px;
  font-size: 0.75rem;
  line-height: 1.55;
  color: var(--color-muted);
}

.rdns-hero-helper-link {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  padding: 4px 10px;
  border: 1px solid var(--color-border-soft);
  border-radius: 999px;
  background: var(--color-bg-soft);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.rdns-hero-helper-link:hover {
  border-color: rgba(56, 189, 248, 0.35);
  background: rgba(56, 189, 248, 0.06);
  color: var(--color-text);
}

[data-theme="dark"] .rdns-hero-helper-note {
  color: rgba(148, 163, 184, 0.88);
}

.rdns-section-band {
  padding: 56px 0 60px;
}

.rdns-section-band--soft {
  background: var(--color-bg-soft);
}

[data-theme="dark"] .rdns-section-band--soft {
  background: rgba(148, 163, 184, 0.04);
}

/* Preview card */
.rdns-preview-card {
  border: 1px solid var(--color-border-soft);
  border-radius: 16px;
  background: var(--color-card);
  box-shadow: 0 12px 40px rgba(7, 26, 51, 0.08);
  overflow: hidden;
}

.rdns-preview-browser {
  display: flex;
  gap: 6px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-border-soft);
  background: var(--color-bg-soft);
}

.rdns-preview-browser span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(148, 163, 184, 0.45);
}

.rdns-preview-head {
  padding: 14px 18px 0;
}

.rdns-preview-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.rdns-preview-rows {
  list-style: none;
  margin: 0;
  padding: 12px 18px 8px;
}

.rdns-preview-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border-soft);
  font-size: 0.8125rem;
}

.rdns-preview-row--status {
  grid-template-columns: 1fr auto auto;
}

.rdns-preview-row:last-child {
  border-bottom: none;
}

.rdns-preview-row-label {
  color: var(--color-muted);
  font-size: 0.75rem;
  line-height: 1.3;
}

.rdns-preview-row-value {
  font-weight: 600;
  color: var(--color-text);
  text-align: right;
  font-size: 0.8125rem;
}

.rdns-preview-badge {
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
}

.rdns-preview-badge--good {
  background: rgba(22, 199, 132, 0.12);
  color: var(--color-success);
}

.rdns-preview-foot {
  margin: 0;
  padding: 10px 18px 14px;
  font-size: 0.6875rem;
  color: var(--color-muted);
  text-align: center;
}

/* Feature grid */
.rdns-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.rdns-feature-card {
  padding: 20px 18px;
  border: 1px solid var(--color-border-soft);
  border-radius: 14px;
  background: var(--color-card);
}

.rdns-feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 12px;
  border-radius: 10px;
  background: rgba(56, 189, 248, 0.1);
  color: #0284c7;
}

.rdns-feature-card h3 {
  margin: 0 0 6px;
  font-size: 0.9375rem;
  font-weight: 700;
}

.rdns-feature-card p {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--color-muted);
}

/* Who should use this */
.rdns-who-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.rdns-who-card {
  padding: 16px 16px 18px;
  border: 1px solid var(--color-border-soft);
  border-radius: 12px;
  background: var(--color-card);
}

.rdns-who-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 10px;
  border-radius: 9px;
  background: rgba(56, 189, 248, 0.1);
  color: #0284c7;
}

.rdns-who-card h3 {
  margin: 0 0 5px;
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1.3;
}

.rdns-who-card p {
  margin: 0;
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--color-muted);
}

/* Issue severity labels */
.reverse-dns-checker-page .rdns-issue-cat--warning {
  color: #B45309;
}

.reverse-dns-checker-page .rdns-issue-cat--review {
  color: #2563EB;
}

.reverse-dns-checker-page .rdns-issue-cat--timeout {
  color: #7C6A0A;
}

[data-theme="dark"] .reverse-dns-checker-page .rdns-issue-cat--warning {
  color: #FBBF24;
}

[data-theme="dark"] .reverse-dns-checker-page .rdns-issue-cat--review {
  color: #60A5FA;
}

[data-theme="dark"] .reverse-dns-checker-page .rdns-issue-cat--timeout {
  color: #FDE047;
}

/* Understanding cards */
.rdns-understanding-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}

.rdns-understanding-card {
  padding: 18px;
  border: 1px solid var(--color-border-soft);
  border-radius: 12px;
  background: var(--color-card);
}

.rdns-understanding-card h3 {
  margin: 0 0 6px;
  font-size: 0.9375rem;
}

.rdns-understanding-card p {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--color-muted);
}

.rdns-provider-note {
  margin: 0;
  padding: 14px 16px;
  border-radius: 10px;
  background: rgba(56, 189, 248, 0.08);
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--color-text);
}

.rdns-provider-note--prominent {
  padding: 16px 18px;
  border: 1px solid rgba(56, 189, 248, 0.22);
  border-left: 3px solid #0284c7;
  font-size: 0.875rem;
  line-height: 1.6;
}

.rdns-provider-note--prominent strong {
  font-weight: 700;
  color: var(--color-text);
}

[data-theme="dark"] .rdns-provider-note {
  background: rgba(56, 189, 248, 0.06);
}

[data-theme="dark"] .rdns-provider-note--prominent {
  border-color: rgba(56, 189, 248, 0.18);
  border-left-color: #38bdf8;
}

/* iHoster band */
.rdns-ihoster-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px 28px;
  border: 1px solid var(--color-border-soft);
  border-radius: 16px;
  background: var(--color-card);
}

.rdns-ihoster-icon {
  flex-shrink: 0;
  color: #0284c7;
}

.rdns-ihoster-copy h2 {
  margin: 0 0 6px;
  font-size: 1.125rem;
}

.rdns-ihoster-copy p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.55;
}

.rdns-ihoster-btn {
  flex-shrink: 0;
  margin-left: auto;
}

/* Result page */
.rdns-status-visual--confirmed .spf-status-badge-core,
.rdns-status-visual--configured .spf-status-badge-core {
  color: var(--color-success);
}

.rdns-status-visual--review .spf-status-badge-core {
  color: #d97706;
}

.rdns-status-visual--warning .spf-status-badge-core,
.rdns-status-visual--not_found .spf-status-badge-core {
  color: #d97706;
}

.rdns-status-visual--failed .spf-status-badge-core {
  color: #ef4444;
}

.rdns-report-ip {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.rdns-key-fact--warn dd {
  color: #d97706;
}

.rdns-domain-hint {
  margin: 12px 0 0;
}

.rdns-dns-link {
  display: inline-flex;
  font-size: 0.8125rem;
}

.rdns-issues-success-strip {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border: 1px solid rgba(22, 199, 132, 0.22);
  border-radius: 12px;
  background: rgba(22, 199, 132, 0.06);
}

.rdns-issues-success-icon {
  flex-shrink: 0;
  color: var(--color-success);
}

.rdns-issues-success-text {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 600;
}

.rdns-result-badge {
  display: inline-flex;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
}

.rdns-result-badge--good {
  background: rgba(22, 199, 132, 0.12);
  color: var(--color-success);
}

.rdns-result-badge--warn {
  background: rgba(245, 158, 11, 0.12);
  color: #d97706;
}

.rdns-result-badge--bad {
  background: rgba(239, 68, 68, 0.12);
  color: #ef4444;
}

.rdns-result-badge--review {
  background: rgba(59, 130, 246, 0.12);
  color: #2563eb;
}

.rdns-result-badge--neutral {
  background: rgba(148, 163, 184, 0.14);
  color: var(--color-muted);
}

.rdns-mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.8125rem;
}

.rdns-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.rdns-empty-state,
.rdns-section-empty {
  padding: 24px;
  border: 1px dashed var(--color-border-soft);
  border-radius: 12px;
  text-align: center;
}

.rdns-empty-title {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 700;
}

.rdns-empty-text {
  margin: 0 0 16px;
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.55;
}

.rdns-detail-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 20px;
  margin: 0 0 18px;
}

.rdns-detail-facts--inline {
  margin-top: 0;
}

.rdns-detail-facts--compact {
  margin: 0;
  gap: 10px 16px;
}

.rdns-detail-facts--compact .rdns-detail-item {
  padding: 10px 12px;
  border: 1px solid var(--color-border-soft);
  border-radius: 10px;
  background: var(--color-bg-soft);
}

.rdns-detail-facts--compact dt {
  margin: 0 0 3px;
  font-size: 0.625rem;
}

.rdns-detail-facts--compact .rdns-detail-value {
  font-size: 0.8125rem;
  font-weight: 600;
  word-break: break-word;
}

.rdns-detail-facts--stack {
  grid-template-columns: 1fr;
}

.rdns-detail-facts div,
.rdns-detail-facts .rdns-detail-item {
  min-width: 0;
}

.rdns-detail-facts dt {
  margin: 0 0 4px;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-muted);
}

.rdns-detail-facts dd,
.rdns-detail-value {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 600;
  word-break: break-all;
}

/* Copy hostname button */
.rdns-copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 5px 10px;
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 1;
  color: var(--color-text);
  background: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.rdns-copy-btn:hover {
  border-color: rgba(22, 199, 132, 0.35);
  background: rgba(22, 199, 132, 0.06);
  color: var(--color-accent-dark, var(--color-text));
}

.rdns-copy-btn.is-copied {
  color: var(--color-success);
  border-color: rgba(22, 199, 132, 0.35);
  background: rgba(22, 199, 132, 0.08);
}

.rdns-actions-cell {
  width: 88px;
  text-align: center;
  white-space: nowrap;
}

.rdns-results-table th:last-child,
.rdns-results-table td.rdns-actions-cell {
  width: 88px;
}

.rdns-forward-fail-note {
  margin: 0 0 14px;
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(245, 158, 11, 0.08);
  font-size: 0.8125rem;
  color: var(--color-text);
}

.rdns-resolved-cell {
  max-width: 220px;
  word-break: break-all;
}

.rdns-mail-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.rdns-mail-card {
  padding: 16px;
  border: 1px solid var(--color-border-soft);
  border-radius: 12px;
  background: var(--color-bg-soft);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rdns-mail-card--good { border-left: 3px solid var(--color-success); }
.rdns-mail-card--warn { border-left: 3px solid #f59e0b; }
.rdns-mail-card--review { border-left: 3px solid #2563eb; }

.rdns-mail-card-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-muted);
}

.rdns-mail-card-value {
  font-size: 0.9375rem;
  font-weight: 700;
}

.rdns-related-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* Hide landing when results */
.reverse-dns-checker-page.tool-page--has-results .rdns-landing-section,
.reverse-dns-checker-page.tool-page--has-results .tool-related:not(.rdns-results-related),
.reverse-dns-checker-page.tool-page--has-results .rdns-ihoster-band,
.reverse-dns-checker-page.tool-page--has-results .rdns-faq-section,
.reverse-dns-checker-page.tool-page--checking .rdns-landing-section,
.reverse-dns-checker-page.tool-page--checking .tool-related,
.reverse-dns-checker-page.tool-page--checking .rdns-ihoster-band,
.reverse-dns-checker-page.tool-page--checking .rdns-faq-section {
  display: none;
}

.reverse-dns-checker-page.tool-page--checking .tool-hero-grid,
.reverse-dns-checker-page.tool-page--has-results .tool-hero-grid {
  grid-template-columns: 1fr;
  max-width: 720px;
  margin: 0 auto;
  gap: 0;
}

.reverse-dns-checker-page.tool-page--checking .tool-hero-preview,
.reverse-dns-checker-page.tool-page--has-results .tool-hero-preview {
  display: none;
}

.reverse-dns-checker-page.tool-page--checking .hero-badge,
.reverse-dns-checker-page.tool-page--has-results .hero-badge,
.reverse-dns-checker-page.tool-page--has-results .tool-hero-subtitle,
.reverse-dns-checker-page.tool-page--has-results .tool-hero-trust,
.reverse-dns-checker-page.tool-page--checking .rdns-hero-helper,
.reverse-dns-checker-page.tool-page--has-results .rdns-hero-helper {
  display: none;
}

@media (max-width: 1024px) {
  .reverse-dns-checker-page .tool-hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .rdns-feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .rdns-who-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .rdns-mail-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .rdns-feature-grid,
  .rdns-understanding-grid,
  .rdns-who-grid {
    grid-template-columns: 1fr;
  }

  .rdns-hero-helper-link {
    width: 100%;
    justify-content: center;
  }

  .rdns-detail-facts,
  .rdns-detail-facts--compact {
    grid-template-columns: 1fr;
  }

  .rdns-table-wrap .rdns-results-table {
    min-width: 520px;
  }

  .rdns-copy-btn {
    padding: 6px 10px;
    font-size: 0.6875rem;
  }

  .rdns-ihoster-card {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
  }

  .rdns-ihoster-btn {
    width: 100%;
    margin-left: 0;
    text-align: center;
  }

  .reverse-dns-checker-page .spf-action-row--main,
  .reverse-dns-checker-page .spf-ihoster-helper-actions {
    flex-direction: column;
  }

  .reverse-dns-checker-page .spf-action-btn {
    width: 100%;
    justify-content: center;
  }

  .rdns-mail-grid,
  .rdns-related-grid {
    grid-template-columns: 1fr;
  }
}