/* ============================================================
   EZZO.SG — Blog Styles (shared across all blog articles)
   ============================================================ */

/* ── Blog Hero ─────────────────────────────────────────── */
.blog-hero {
  position: relative;
  background: linear-gradient(135deg, #0e2340 0%, #1a3a5c 60%, #0a1828 100%);
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  overflow: hidden;
}

.blog-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 80% 50%, rgba(176,138,74,0.12) 0%, transparent 70%),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 79px,
      rgba(255,255,255,0.025) 79px,
      rgba(255,255,255,0.025) 80px
    );
  pointer-events: none;
}

.blog-hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
}

.blog-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.blog-hero__category {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(176,138,74,0.12);
  border: 1px solid rgba(176,138,74,0.3);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

.blog-hero__meta-sep {
  color: rgba(255,255,255,0.2);
}

.blog-hero__meta {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.04em;
}

.blog-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 1rem + 3.5vw, 3.5rem);
  font-weight: 600;
  color: #f4f5f6;
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 820px;
  margin-bottom: var(--space-6);
}

.blog-hero__title em {
  font-style: italic;
  color: var(--color-accent);
}

.blog-hero__lead {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: rgba(220,228,237,0.75);
  line-height: 1.65;
  max-width: 640px;
}

/* ── Blog Layout: Two-Column (prose + sidebar) ─────────── */
.blog-layout {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: clamp(var(--space-10), 4vw, var(--space-16));
  align-items: start;
}

@media (max-width: 900px) {
  .blog-layout {
    grid-template-columns: 1fr;
  }
  .blog-sidebar {
    order: -1;
  }
}

/* ── Prose ─────────────────────────────────────────────── */
.blog-prose {
  min-width: 0;
}

.blog-prose h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 1rem + 1.5vw, 2.25rem);
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.15;
  margin-top: clamp(var(--space-10), 5vw, var(--space-16));
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
  scroll-margin-top: 100px;
}

[data-theme="dark"] .blog-prose h2 {
  color: var(--color-primary);
}

.blog-prose h3 {
  font-family: var(--font-display);
  font-size: clamp(1.125rem, 0.9rem + 0.75vw, 1.5rem);
  font-weight: 500;
  color: var(--color-text);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
  scroll-margin-top: 100px;
}

.blog-prose p {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: var(--space-5);
  max-width: 72ch;
}

.blog-prose a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(26,58,92,0.35);
  transition: color var(--transition-interactive), text-decoration-color var(--transition-interactive);
}

.blog-prose a:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}

.blog-prose ul,
.blog-prose ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-6);
}

.blog-prose li {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  max-width: 68ch;
}

.blog-prose ul li {
  list-style: none;
  position: relative;
  padding-left: var(--space-5);
}

.blog-prose ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

.blog-prose strong {
  font-weight: 600;
  color: var(--color-text);
}

/* ── Callout / Stat Boxes ──────────────────────────────── */
.blog-callout {
  background: var(--color-surface-offset);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-5) var(--space-6);
  margin-block: var(--space-8);
}

.blog-callout p {
  margin: 0;
  font-size: var(--text-base);
  color: var(--color-text);
}

.blog-callout strong {
  color: var(--color-primary);
}

/* ── Stat Grid ─────────────────────────────────────────── */
.blog-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
  margin-block: var(--space-8);
}

.blog-stat {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  text-align: center;
}

.blog-stat__number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 1rem + 2vw, 2.5rem);
  font-weight: 600;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.blog-stat__label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* ── Diagram / Illustration blocks ────────────────────── */
.blog-diagram {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  margin-block: var(--space-8);
  overflow: hidden;
}

.blog-diagram__caption {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
  margin-top: var(--space-4);
  letter-spacing: 0.04em;
}

/* ── Comparison Table ──────────────────────────────────── */
.blog-table-wrap {
  overflow-x: auto;
  margin-block: var(--space-8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.blog-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: var(--text-sm);
}

.blog-table th {
  background: var(--color-surface-offset);
  padding: var(--space-4) var(--space-5);
  font-weight: 600;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.blog-table td {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-divider);
  color: var(--color-text);
  vertical-align: top;
  line-height: 1.55;
}

.blog-table tr:last-child td {
  border-bottom: none;
}

.blog-table tr:nth-child(even) td {
  background: color-mix(in oklab, var(--color-surface-offset) 40%, transparent);
}

.blog-table__check {
  color: var(--color-success);
  font-weight: 600;
}

.blog-table__cross {
  color: var(--color-error);
  font-weight: 600;
}

/* ── Product Range Cards ───────────────────────────────── */
.blog-products {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-4);
  margin-block: var(--space-8);
}

.blog-product-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}

.blog-product-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.blog-product-card__name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

[data-theme="dark"] .blog-product-card__name {
  color: var(--color-primary);
}

.blog-product-card__spec {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-3);
}

.blog-product-card__badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(176,138,74,0.12);
  border: 1px solid rgba(176,138,74,0.25);
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
}

/* ── Sidebar ───────────────────────────────────────────── */
.blog-sidebar {
  position: sticky;
  top: 100px;
}

.blog-toc {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.blog-toc__title {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
}

.blog-toc__list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.blog-toc__link {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  line-height: 1.4;
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.blog-toc__link:hover,
.blog-toc__link.is-active {
  color: var(--color-primary);
  background: var(--color-surface-offset);
}

.blog-toc__link.is-active {
  font-weight: 500;
  border-left: 2px solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* ── Sidebar CTA ───────────────────────────────────────── */
.blog-sidebar-cta {
  background: linear-gradient(135deg, #1a3a5c 0%, #0e2340 100%);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
}

.blog-sidebar-cta__headline {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: #f4f5f6;
  margin-bottom: var(--space-3);
  line-height: 1.2;
}

.blog-sidebar-cta__body {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: rgba(220,228,237,0.7);
  line-height: 1.6;
  margin-bottom: var(--space-5);
  max-width: 100%;
}

/* ── CTA Section (end of article) ─────────────────────── */
.blog-cta {
  background: linear-gradient(135deg, #0e2340 0%, #1a3a5c 60%, #142e4a 100%);
  padding: clamp(var(--space-12), 6vw, var(--space-20));
  text-align: center;
  position: relative;
  overflow: hidden;
}

.blog-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 50% 70% at 50% 0%, rgba(176,138,74,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.blog-cta__inner {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin-inline: auto;
}

.blog-cta__eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.blog-cta__headline {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 1rem + 2.5vw, 2.75rem);
  font-weight: 600;
  color: #f4f5f6;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-5);
}

.blog-cta__body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: rgba(220,228,237,0.7);
  line-height: 1.7;
  margin-bottom: var(--space-8);
  max-width: 100%;
}

.blog-cta__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Button tokens (if not in components.css) ──────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1;
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition-interactive), border-color var(--transition-interactive),
    color var(--transition-interactive), box-shadow var(--transition-interactive);
}

.btn--accent {
  background: var(--color-accent);
  color: #0e1520;
  border-color: var(--color-accent);
}

.btn--accent:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

.btn--outline-light {
  background: transparent;
  color: #f4f5f6;
  border-color: rgba(255,255,255,0.3);
}

.btn--outline-light:hover {
  border-color: rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.06);
}

/* ── Related Articles ──────────────────────────────────── */
.blog-related {
  background: var(--color-surface-offset);
  padding: clamp(var(--space-12), 6vw, var(--space-20));
}

.blog-related__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
}

.blog-related__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 1rem + 1.5vw, 2rem);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-8);
}

.blog-related__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}

.blog-related-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-decoration: none;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive), transform var(--transition-interactive);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.blog-related-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.blog-related-card__cat {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.blog-related-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.25;
}

.blog-related-card__desc {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
  max-width: 100%;
}

.blog-related-card__read {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.06em;
  margin-top: auto;
}

/* ── SVG Diagram Styles ────────────────────────────────── */
.tb-diagram {
  width: 100%;
  max-width: 560px;
  margin-inline: auto;
  display: block;
}

/* ── Active TOC link scroll tracking ──────────────────── */
@media (prefers-reduced-motion: no-preference) {
  .blog-toc__link {
    transition: color 150ms ease, background 150ms ease, border-color 150ms ease;
  }
}

/* ── Reading Progress Bar ──────────────────────────────────── */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-divider);
  z-index: 1001;
  pointer-events: none;
}

.reading-progress__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
  width: 0%;
  transition: width 80ms linear;
}