/* ============================================================
   Sona blog theme
   Applies the Sona Marketing Site Design System to the blog
   index and article pages only.

   Tokens are scoped to .sona-blog (never :root) so they cannot
   leak into the homepage or results page, which still run on the
   older palette in style.css. Same containment approach as
   new-design/new-design.css, which scopes to .avp.

   Load AFTER style.css. Source of truth for values:
   design_system/tokens.css
   ============================================================ */

.sona-blog {
  /* ---- Brand / core ---- */
  --sona-navy: var(--sona-primary-400);
  --sona-navy-hover: var(--sona-navy-hover);
  --sona-navy-deep: var(--sona-primary-700);
  --sona-navy-mid: var(--sona-primary-300);
  --sona-pink: var(--sona-secondary-200);
  --sona-pink-link: var(--sona-secondary-100);
  --sona-pink-pill: var(--sona-secondary-60);
  --sona-gradient-navy: linear-gradient(
    279deg,
    var(--sona-primary-400) 6.59%,
    var(--sona-primary-700) 32.47%,
    var(--sona-primary-400) 49.58%,
    var(--sona-primary-700) 67.11%,
    var(--sona-primary-400) 93.41%
  );

  /* ---- Surfaces ---- */
  --surface-light: var(--sona-primary-10);
  --surface-light-alt: var(--sona-primary-05);
  --surface-card: var(--sona-surface-card);
  --surface-chrome: var(--sona-chrome);

  /* ---- Pills / chips ---- */
  --pill-bg: var(--sona-primary-40);
  --pill-border: var(--sona-primary-60);
  --pill-hover: #e4e6f7;

  /* ---- Text on light ---- */
  --text-heading: var(--sona-neutral-800);
  --text-heading-2: var(--sona-heading-alt);
  --text-body: var(--sona-neutral-600);
  --text-body-2: var(--sona-neutral-500);
  --text-muted: var(--sona-neutral-400);
  --text-muted-2: var(--sona-neutral-100);
  --text-muted-3: var(--sona-text-fine);
  --text-label: var(--sona-primary-80);

  /* ---- Text on navy ---- */
  --text-on-dark-heading: var(--sona-neutral-05);
  --text-on-dark-body: var(--sona-neutral-30);

  /* ---- Borders ---- */
  --border-light: var(--sona-border-cool);
  --border-divider: var(--sona-neutral-30);
  --border-button: var(--sona-neutral-50);

  /* ---- Status ---- */
  --status-success: var(--sona-status-success);
  --color-success-500: var(--sona-success-500);
  --color-error: var(--sona-error-300);
  --color-warning-500: var(--sona-warning-500);

  /* ---- Radii ---- */
  --r-pill: 9999px;
  --r-sm: 6px;
  --r-md: 8px;
  /* --r-feature is the radius for every card surface across the blog: index
     cards, related cards, key-takeaway callouts, FAQ items and tables. Keep
     them on one token so an article page can never drift from /blog/.
     --r-card stays in the scale for smaller inset surfaces only. */
  --r-card: 16px;
  --r-feature: 20px;
  --r-panel: 32px;

  /* ---- Shadows ---- */
  --shadow-analytics: 0 0 8px 0 rgba(41, 64, 185, 0.01), 0 0 6px 0 rgba(41, 64, 185, 0.02),
    0 0 5px 0 rgba(41, 64, 185, 0.04), 0 0 4px 0 rgba(41, 64, 185, 0.08),
    0 0 2px 0 rgba(41, 64, 185, 0.1);
  --shadow-window: 0 40px 90px rgba(29, 45, 130, 0.1), 0 12px 30px rgba(29, 45, 130, 0.04);

  /* ---- Motion ---- */
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 150ms;
  --dur-base: 200ms;
  --dur-slow: 300ms;

  /* ---- Type ---- */
  --font-sans: "Satoshi", system-ui, -apple-system, "Segoe UI", sans-serif;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-black: 900;

  font-family: var(--font-sans);
}

/* ============================================================
   Page canvas
   ============================================================ */

.sona-blog .blog-main {
  background: var(--surface-light);
}

/* ============================================================
   Blog index hero
   ============================================================ */

.sona-blog .blog-hero {
  background: var(--sona-gradient-navy);
  border-bottom: none;
  padding: 72px 0 64px;
}
.sona-blog .blog-hero h1 {
  font-weight: var(--fw-bold);
  font-size: 48px;
  line-height: 1.15;
  letter-spacing: -1.2px;
  color: var(--text-on-dark-heading);
  margin: 16px 0 0;
}
.sona-blog .blog-hero p {
  font-size: 20px;
  font-weight: var(--fw-medium);
  line-height: 1.5;
  color: var(--text-on-dark-body);
  margin: 16px 0 0;
}
.sona-blog .blog-hero .breadcrumb {
  color: rgba(255, 255, 255, 0.55);
}
.sona-blog .blog-hero .breadcrumb a {
  color: var(--sona-pink-link);
}

/* ============================================================
   Breadcrumb
   ============================================================ */

.sona-blog .breadcrumb {
  font-size: 14px;
  font-weight: var(--fw-medium);
  color: var(--text-muted-2);
}
.sona-blog .breadcrumb a {
  color: var(--sona-navy-mid);
  text-decoration: none;
}
.sona-blog .breadcrumb a:hover {
  color: var(--sona-navy);
  text-decoration: underline;
}

/* ============================================================
   Article layout
   ============================================================ */

.sona-blog .article-wrap {
  max-width: 780px;
  padding: 56px 24px 80px;
}
.sona-blog .article-meta {
  font-size: 14px;
  font-weight: var(--fw-medium);
  color: var(--text-muted-2);
  gap: 10px;
}
.sona-blog .article-meta .dot {
  background: var(--text-muted-3);
}

/* Content-page h1 is 700, not 900. 900 is reserved for marketing heroes. */
.sona-blog .article-wrap h1 {
  font-weight: var(--fw-bold) !important;
  font-size: 44px !important;
  line-height: 1.15 !important;
  letter-spacing: -1.1px !important;
  color: var(--text-heading-2);
  margin: 12px 0 28px !important;
}

/* ============================================================
   Prose
   ============================================================ */

.sona-blog .prose {
  font-size: 18px;
  line-height: 1.65;
  color: var(--text-body);
}
.sona-blog .prose h2 {
  font-size: 30px;
  font-weight: var(--fw-bold);
  line-height: 1.25;
  letter-spacing: -0.7px;
  color: var(--text-heading);
  margin: 52px 0 16px;
}
.sona-blog .prose h3 {
  font-size: 22px;
  font-weight: var(--fw-bold);
  line-height: 1.3;
  letter-spacing: -0.3px;
  color: var(--text-heading);
  margin: 36px 0 12px;
}
.sona-blog .prose p {
  color: var(--text-body);
  margin: 0 0 20px;
}
.sona-blog .prose ul,
.sona-blog .prose ol {
  color: var(--text-body);
  padding-left: 22px;
}
.sona-blog .prose li {
  margin-bottom: 10px;
}
.sona-blog .prose li::marker {
  color: var(--text-muted-3);
}
.sona-blog .prose a {
  color: var(--sona-navy-mid);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  transition: color var(--dur-base) var(--ease-standard);
}
.sona-blog .prose a:hover {
  color: var(--sona-pink);
}
.sona-blog .prose strong {
  color: var(--text-heading);
  font-weight: var(--fw-bold);
}
.sona-blog .prose code {
  background: var(--pill-bg);
  border: 1px solid var(--pill-border);
  border-radius: var(--r-sm);
  color: var(--sona-navy-mid);
  padding: 1px 6px;
  font-size: 0.875em;
}
.sona-blog .prose pre {
  background: var(--sona-navy-deep);
  border-radius: var(--r-md);
}
.sona-blog .prose pre code {
  background: none;
  border: none;
  color: inherit;
  padding: 0;
}
.sona-blog .prose blockquote {
  border-left: 3px solid var(--sona-pink);
  background: var(--surface-card);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  color: var(--text-body);
}

/* Key takeaway callout */
.sona-blog .prose .key-takeaway {
  background: var(--surface-card);
  border: 1px solid var(--border-light);
  border-left: 3px solid var(--sona-pink);
  border-radius: var(--r-feature);
  box-shadow: var(--shadow-analytics);
  padding: 24px 28px;
  margin: 0 0 36px;
}
.sona-blog .prose .key-takeaway p {
  color: var(--text-body);
  font-size: 17px;
  line-height: 1.6;
}

/* ============================================================
   Comparison tables
   ============================================================ */

.sona-blog .table-scroll {
  border: 1px solid var(--border-light);
  border-radius: var(--r-feature);
  background: var(--surface-card);
  box-shadow: var(--shadow-analytics);
  margin: 0 0 12px;
}
.sona-blog .compare-table {
  font-size: 15px;
}
.sona-blog .compare-table th,
.sona-blog .compare-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--border-divider);
  color: var(--text-body);
}
.sona-blog .compare-table thead th {
  background: var(--pill-bg);
  color: var(--text-heading);
  font-weight: var(--fw-bold);
  font-size: 12px;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  white-space: normal;
  line-height: 1.35;
}
.sona-blog .compare-table tbody th {
  color: var(--text-heading);
  font-weight: var(--fw-semibold);
}
.sona-blog .compare-table tbody tr:nth-child(even) {
  background: var(--surface-light-alt);
}
.sona-blog .compare-table .yes {
  color: var(--color-success-500);
  font-weight: var(--fw-semibold);
}
.sona-blog .compare-table .partial {
  color: var(--color-warning-500);
  font-weight: var(--fw-medium);
}
.sona-blog .compare-table .no {
  color: var(--text-muted-2);
}
.sona-blog .table-note {
  font-size: 13px;
  color: var(--text-muted-3);
  line-height: 1.55;
  margin: 0 0 32px;
}

/* ============================================================
   In-article CTA
   ============================================================ */

.sona-blog .article-cta {
  background: var(--sona-gradient-navy);
  border-radius: var(--r-panel);
  box-shadow: var(--shadow-window);
  padding: 40px 32px;
  margin: 56px 0 0;
}
.sona-blog .article-cta h3 {
  font-size: 28px;
  font-weight: var(--fw-bold);
  letter-spacing: -0.6px;
  color: var(--text-on-dark-heading);
  margin: 0 0 10px;
}
.sona-blog .article-cta p {
  font-size: 16px;
  font-weight: var(--fw-medium);
  color: var(--text-on-dark-body);
  margin: 0 0 24px;
}
/* .prose a sets an underline; the CTA is a button, not a link in prose. */
.sona-blog .article-cta .btn,
.sona-blog .article-cta .btn:hover {
  text-decoration: none;
}
.sona-blog .article-cta .btn {
  background: var(--sona-pink);
  color: var(--text-on-dark-heading);
  border-radius: var(--r-pill);
  font-weight: var(--fw-medium);
  font-size: 16px;
  padding: 0 28px;
  transition: background-color var(--dur-base) var(--ease-standard);
}
.sona-blog .article-cta .btn:hover {
  background: #d81f6f;
}

/* ============================================================
   FAQ
   ============================================================ */

.sona-blog .faq-section {
  background: var(--surface-light);
  padding: 72px 0;
  border-top: 1px solid var(--border-light);
}
/* Articles are a 780px measure. Pull the FAQ and related blocks onto the same
   column so the page reads as one continuous piece rather than a narrow
   article followed by two full-bleed sections. */
.sona-blog .article-wrap ~ .faq-section .container,
.sona-blog .article-wrap ~ .article-related {
  max-width: 780px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.sona-blog .faq-section .section-label {
  font-size: 12px;
  font-weight: var(--fw-bold);
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--sona-navy-mid);
}
.sona-blog .faq-section h2 {
  font-size: 30px;
  font-weight: var(--fw-bold);
  letter-spacing: -0.7px;
  line-height: 1.25;
  color: var(--text-heading);
  margin-top: 10px;
}
.sona-blog .faq-list {
  gap: 12px;
  margin-top: 36px;
}
.sona-blog .faq-item {
  background: var(--sona-tint);
  border: 1px solid var(--border-light);
  border-radius: var(--r-feature);
  box-shadow: var(--shadow-analytics);
  transition: background var(--dur-base) var(--ease-standard);
}
/* The accordion JS toggles .is-open on the <details> and only removes the
   `open` attribute at transitionend, so key off .is-open to keep the tint in
   sync with the height animation. */
.sona-blog .faq-item:hover,
.sona-blog .faq-item.is-open {
  background: var(--pill-bg);
}
.sona-blog .faq-item summary {
  padding: 20px 24px;
  font-size: 20px;
  font-weight: var(--fw-bold);
  line-height: 1.3;
  letter-spacing: -0.2px;
  color: var(--text-heading);
}
.sona-blog .faq-item summary::after {
  border-right: 2px solid var(--text-body);
  border-bottom: 2px solid var(--text-body);
  transition: transform var(--dur-slow) var(--ease-standard);
}
.sona-blog .faq-item p {
  padding: 0 24px 20px;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-muted);
}
.sona-blog .faq-item p a {
  color: var(--sona-navy-mid);
}

/* ============================================================
   Cards: blog index listing and related posts
   ============================================================ */

.sona-blog .blog-list {
  padding: 56px 0 88px;
}
/* Heading block above the card grid. Shares the grid's left edge (no auto
   margin) so the title, the description and the first card all line up. */
.sona-blog .blog-list-head {
  margin: 0 0 36px;
}
.sona-blog .blog-list-head .section-label {
  display: block;
  font-size: 12px;
  font-weight: var(--fw-bold);
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--sona-navy-mid);
  margin: 0 0 10px;
}
.sona-blog .blog-list-head h2 {
  font-size: 30px;
  font-weight: var(--fw-bold);
  line-height: 1.25;
  letter-spacing: -0.7px;
  color: var(--text-heading);
  margin: 0 0 12px;
}
.sona-blog .blog-list-head p {
  font-size: 17px;
  line-height: 1.6;
  color: var(--text-muted);
  margin: 0;
}
.sona-blog .blog-list-grid,
.sona-blog .article-related-grid {
  gap: 20px;
}
.sona-blog .resource-card {
  background: var(--surface-card);
  border: 1px solid var(--border-light);
  border-radius: var(--r-feature);
  box-shadow: var(--shadow-analytics);
  padding: 24px;
  transition: transform var(--dur-base) var(--ease-standard),
    box-shadow var(--dur-base) var(--ease-standard),
    border-color var(--dur-base) var(--ease-standard);
}
.sona-blog .resource-card:hover {
  transform: translateY(-2px);
  border-color: var(--pill-border);
  box-shadow: var(--shadow-window);
}
.sona-blog .resource-tag {
  display: inline-block;
  background: var(--pill-bg);
  border: 1px solid var(--pill-border);
  border-radius: var(--r-pill);
  padding: 4px 12px;
  font-size: 12px;
  font-weight: var(--fw-bold);
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--sona-navy-mid);
}
.sona-blog .resource-card h3 {
  font-size: 20px;
  font-weight: var(--fw-bold);
  line-height: 1.3;
  letter-spacing: -0.3px;
  color: var(--text-heading);
  margin: 14px 0 8px;
}
.sona-blog .resource-card p {
  font-size: 15px;
  line-height: 1.55;
  color: var(--text-muted);
}
.sona-blog .resource-link {
  color: var(--sona-navy-mid);
  font-weight: var(--fw-semibold);
  font-size: 15px;
}
.sona-blog .resource-card:hover .resource-link {
  color: var(--sona-pink);
}

/* ============================================================
   Related posts section
   ============================================================ */

.sona-blog .article-related {
  border-top: 1px solid var(--border-light);
  padding: 64px 24px 88px;
}
.sona-blog .article-related h2 {
  font-size: 30px;
  font-weight: var(--fw-bold);
  letter-spacing: -0.7px;
  color: var(--text-heading);
}

/* ============================================================
   Blog index intro prose
   ============================================================ */

/* The intro runs the full container width so it shares both edges with the
   card grid below it, rather than sitting in a narrow column with a third of
   the row left empty. The `.container` override undoes the 760px the markup
   used to pin here. */
.sona-blog .blog-intro {
  padding: 56px 0 8px;
}
.sona-blog .blog-intro > .container {
  max-width: 1440px !important;
}
.sona-blog .blog-intro .prose {
  max-width: none;
}
.sona-blog .blog-intro .prose h2 {
  font-size: 26px;
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 900px) {
  .sona-blog .blog-list-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .sona-blog .blog-hero {
    padding: 48px 0 40px;
  }
  .sona-blog .blog-hero h1 {
    font-size: 30px;
    letter-spacing: -0.7px;
  }
  .sona-blog .blog-hero p {
    font-size: 17px;
  }
  .sona-blog .article-wrap {
    padding: 36px 20px 56px;
  }
  .sona-blog .article-wrap h1 {
    font-size: 30px !important;
    letter-spacing: -0.7px !important;
  }
  .sona-blog .prose {
    font-size: 17px;
  }
  .sona-blog .prose h2 {
    font-size: 24px;
    letter-spacing: -0.5px;
    margin-top: 40px;
  }
  .sona-blog .prose h3 {
    font-size: 19px;
  }
  .sona-blog .prose .key-takeaway {
    padding: 20px;
  }
  .sona-blog .faq-section h2 {
    font-size: 28px;
    letter-spacing: -0.6px;
  }
  .sona-blog .faq-item summary {
    font-size: 17px;
    padding: 18px 20px;
  }
  .sona-blog .faq-item p {
    padding: 0 20px 18px;
    font-size: 15px;
  }
  .sona-blog .blog-list-grid,
  .sona-blog .article-related-grid {
    grid-template-columns: 1fr;
  }
  .sona-blog .article-cta {
    padding: 32px 24px;
    border-radius: var(--r-feature);
  }
  .sona-blog .article-cta h3 {
    font-size: 23px;
  }
  .sona-blog .article-related {
    padding: 48px 20px 64px;
  }
}