/* Shared COVRU styles used by blog pages. The home page (index.html) keeps its own inline styles. */

:root {
  --bg: #0a0a0f;
  --bg-elevated: #0f0f16;
  --text: #f0f0f4;
  --text-body: #c4c4ca;
  --text-secondary: #b0b0b8;
  --text-tertiary: #8a8a92;
  --cyan: #00f0ff;
  --violet: #8b5cf6;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.15);
  --max: 1400px;
  --reading: 720px;
  --nav-h: 80px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.ambient-glow {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 15% 20%, rgba(0, 240, 255, 0.06), transparent 55%),
    radial-gradient(ellipse at 85% 80%, rgba(139, 92, 246, 0.05), transparent 55%);
}

/* Nav (shared with home) */
nav.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 110;
  padding: 20px 48px;
  display: flex;
  align-items: center;
  gap: 32px;
  background: rgba(10, 10, 15, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.site-nav .logo-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  transition: filter 0.3s ease, transform 0.3s ease;
}
.site-nav .logo-link:hover {
  filter: drop-shadow(0 0 14px rgba(0, 240, 255, 0.35));
  transform: translateY(-1px);
}
.site-nav .logo-svg {
  width: 168px;
  height: auto;
  display: block;
}
.site-nav .nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-left: auto;
}
.site-nav .nav-links a {
  color: var(--text-secondary);
  transition: color 0.25s;
}
.site-nav .nav-links a:hover,
.site-nav .nav-links a[aria-current="page"] { color: var(--text); }
.site-nav .nav-links a[aria-current="page"] { color: var(--cyan); }
.site-nav .nav-cta {
  padding: 10px 20px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 100px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: #fff;
  transition: all 0.3s;
}
.site-nav .nav-cta:hover { background: #fff; color: var(--bg); }

/* Hamburger button (hidden on desktop, shown on mobile) */
.hamburger {
  display: none;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  padding: 0;
  cursor: pointer;
  position: relative;
  z-index: 102;
  margin-left: auto;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
}
.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.35s ease, opacity 0.25s ease;
  transform-origin: center;
}
.hamburger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* Mobile menu overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 101;
  background: rgba(6, 6, 10, 0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 48px;
  padding: 100px 24px 60px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.mobile-menu.open {
  display: flex;
  animation: mobileMenuFadeIn 0.3s ease-out;
}
@keyframes mobileMenuFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.mobile-menu-links {
  list-style: none;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 0;
  margin: 0;
}
.mobile-menu-links a {
  color: var(--text);
  font-size: 30px;
  font-weight: 500;
  letter-spacing: -0.02em;
  text-decoration: none;
  transition: color 0.25s;
}
.mobile-menu-links a:hover,
.mobile-menu-links a:focus-visible {
  color: var(--cyan);
}
.mobile-menu-cta {
  display: inline-block;
  padding: 16px 36px;
  background: #fff;
  color: var(--bg);
  border-radius: 100px;
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: background 0.3s;
}
.mobile-menu-cta:hover { background: var(--cyan); }

@media (max-width: 900px) {
  .site-nav .nav-cta { display: none; }
  .hamburger { display: flex; }
}

/* Main content area */
main {
  position: relative;
  z-index: 2;
  padding-top: calc(var(--nav-h) + 24px);
}

/* Footer (shared) */
footer.site-footer {
  position: relative;
  z-index: 2;
  padding: 40px 48px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-tertiary);
  letter-spacing: 0.05em;
  max-width: var(--max);
  margin: 80px auto 0;
}
.site-footer .footer-social {
  display: flex;
  gap: 24px;
}
.site-footer .footer-social a {
  color: var(--text-tertiary);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.25s;
}
.site-footer .footer-social a:hover { color: var(--cyan); }

/* Focus states */
:focus-visible {
  outline: 2px solid rgba(0, 240, 255, 0.55);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Emphasis = Fraunces italic */
em, .emphasis-serif {
  font-family: 'Fraunces', 'Instrument Serif', Georgia, serif;
  font-style: italic;
  font-weight: 400;
  color: var(--text);
  letter-spacing: -0.005em;
}

/* ===== Blog catalog ===== */
.blog-hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 60px 48px 40px;
}
.blog-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 32px;
}
.blog-eyebrow::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
}
.blog-hero h1 {
  font-size: clamp(44px, 7vw, 88px);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin-bottom: 28px;
  max-width: 18ch;
}
.blog-hero .blog-sub {
  color: var(--text-body);
  font-size: 18px;
  line-height: 1.6;
  max-width: 56ch;
}

.blog-grid {
  max-width: var(--max);
  margin: 0 auto;
  padding: 40px 48px 80px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.blog-grid .featured {
  grid-column: span 3;
}

.blog-card {
  display: flex;
  flex-direction: column;
  background: rgba(15, 15, 22, 0.6);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
  color: inherit;
  height: 100%;
}
.blog-card:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 240, 255, 0.35);
  background: rgba(0, 240, 255, 0.03);
}
.blog-card-image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #05050a;
}
.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.blog-card:hover .blog-card-image img { transform: scale(1.03); }
.blog-card-meta-overlay {
  position: absolute;
  top: 16px; left: 16px; right: 16px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
}
.blog-category {
  background: rgba(10, 10, 15, 0.75);
  backdrop-filter: blur(8px);
  padding: 6px 12px;
  border-radius: 100px;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(0, 240, 255, 0.25);
}
.blog-read-time {
  background: rgba(10, 10, 15, 0.75);
  backdrop-filter: blur(8px);
  padding: 6px 12px;
  border-radius: 100px;
  font-size: 11px;
  color: var(--text-secondary);
}
.blog-card-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.featured .blog-card-body {
  padding: 36px 40px;
}
.blog-card h2 {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.25;
  margin-bottom: 14px;
  color: var(--text);
}
.featured .blog-card h2 { font-size: 30px; max-width: 22ch; }
.blog-card h2 em {
  font-family: 'Fraunces', 'Instrument Serif', Georgia, serif;
  font-style: italic;
  font-weight: 400;
  color: var(--cyan);
}
.blog-card p {
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.65;
  margin-bottom: 24px;
  flex: 1;
}
.featured .blog-card p { font-size: 16px; max-width: 60ch; }
.blog-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}
.blog-card-footer .arrow {
  color: var(--text-tertiary);
  transition: color 0.3s, transform 0.3s;
}
.blog-card:hover .blog-card-footer .arrow {
  color: var(--cyan);
  transform: translateX(4px);
}

/* ===== Blog post article ===== */
.article-hero {
  max-width: var(--reading);
  margin: 0 auto;
  padding: 60px 24px 40px;
}
.article-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  margin-bottom: 32px;
  transition: color 0.25s;
}
.article-back:hover { color: var(--cyan); }

.article-meta {
  display: flex;
  align-items: center;
  gap: 14px 24px;
  flex-wrap: wrap;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 28px;
}
.article-meta .dot {
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--text-tertiary);
}
.article-meta .category { color: var(--cyan); }

.article-hero h1 {
  font-size: clamp(36px, 5.6vw, 60px);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin-bottom: 32px;
  color: var(--text);
}
.article-hero h1 em {
  font-family: 'Fraunces', 'Instrument Serif', Georgia, serif;
  font-style: italic;
  font-weight: 400;
  color: var(--cyan);
}

.article-author {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}
.author-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00f0ff, #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Fraunces', Georgia, serif;
  font-style: italic;
  font-weight: 500;
  color: var(--bg);
  font-size: 18px;
  flex-shrink: 0;
}
.author-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.author-info .author-name {
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
}
.author-info .author-date {
  font-size: 12px;
  color: var(--text-tertiary);
  letter-spacing: 0.05em;
}

.article-hero-image {
  max-width: var(--reading);
  margin: 0 auto 48px;
  padding: 0 24px;
}
.article-hero-image img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--border);
}

/* Article body: the reading experience */
.article-body {
  max-width: var(--reading);
  margin: 0 auto 80px;
  padding: 0 24px;
  color: var(--text-body);
  font-size: 17px;
  line-height: 1.78;
}
.article-body p { margin-bottom: 22px; }
.article-body strong { color: var(--text); font-weight: 500; }
.article-body em {
  font-family: 'Fraunces', 'Instrument Serif', Georgia, serif;
  font-style: italic;
  font-weight: 400;
  color: var(--text);
}
.article-body h2 {
  font-size: 28px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.02em;
  margin: 56px 0 20px;
  line-height: 1.25;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
  margin: 36px 0 14px;
  line-height: 1.3;
}
.article-body h4 {
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.005em;
  margin: 28px 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--cyan);
}
.article-body ul,
.article-body ol {
  padding-left: 0;
  list-style: none;
  margin: 0 0 28px;
}
.article-body ul li,
.article-body ol li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 10px;
  line-height: 1.7;
}
.article-body ul li::before {
  content: '';
  position: absolute;
  left: 8px; top: 12px;
  width: 6px; height: 1px;
  background: var(--cyan);
}
.article-body ol {
  counter-reset: olist;
}
.article-body ol li {
  counter-increment: olist;
}
.article-body ol li::before {
  content: counter(olist, lower-roman) '.';
  position: absolute;
  left: 0;
  font-family: 'Fraunces', Georgia, serif;
  font-style: italic;
  color: var(--cyan);
  font-size: 14px;
}

.article-body blockquote {
  border-left: 2px solid var(--cyan);
  padding: 10px 0 10px 24px;
  margin: 40px 0;
  font-family: 'Fraunces', 'Instrument Serif', Georgia, serif;
  font-style: italic;
  font-weight: 400;
  font-size: 22px;
  line-height: 1.5;
  color: var(--text);
  max-width: 40em;
  letter-spacing: -0.005em;
}

.article-body .callout {
  background: rgba(15, 15, 22, 0.8);
  border: 1px solid var(--border);
  border-left: 2px solid var(--cyan);
  border-radius: 4px;
  padding: 28px;
  margin: 36px 0;
}
.article-body .callout-intro {
  background: linear-gradient(180deg, rgba(0, 240, 255, 0.04), rgba(10, 10, 15, 0.6));
  border-left-color: var(--cyan);
  font-size: 18px;
  line-height: 1.65;
  color: var(--text);
}
.article-body .callout-tldr {
  background: rgba(15, 15, 22, 0.8);
  border-color: var(--border);
  border-left-color: var(--violet);
}
.article-body .callout h3 {
  margin-top: 0;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--cyan);
  margin-bottom: 14px;
  font-weight: 500;
}
.article-body .callout-tldr h3 { color: var(--violet); }
.article-body .callout ul,
.article-body .callout ol { margin-bottom: 0; }
.article-body .callout p:last-child { margin-bottom: 0; }

.article-body .two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 36px 0;
}
.article-body .two-col .col {
  background: rgba(15, 15, 22, 0.6);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 22px;
}
.article-body .two-col h4 {
  margin-top: 0;
  margin-bottom: 10px;
}
.article-body .two-col ul { margin-bottom: 0; }
.article-body .two-col ul li { margin-bottom: 6px; font-size: 15px; }

.article-body .three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 36px 0;
}
.article-body .three-col .col {
  background: rgba(15, 15, 22, 0.6);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
}
.article-body .three-col h4 {
  margin-top: 0;
  font-size: 13px;
}
.article-body .three-col p {
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 0;
}

.article-body .stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin: 36px 0;
}
.article-body .stat-row .stat {
  background: var(--bg-elevated);
  padding: 22px 16px;
  text-align: center;
}
.article-body .stat-row .num {
  font-family: 'Fraunces', 'Instrument Serif', Georgia, serif;
  font-style: italic;
  font-weight: 400;
  font-size: 28px;
  color: var(--cyan);
  line-height: 1;
  margin-bottom: 6px;
}
.article-body .stat-row .label {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-secondary);
  line-height: 1.3;
}

.article-body .conclusion {
  padding-top: 32px;
  margin-top: 48px;
  border-top: 1px solid var(--border);
  font-family: 'Fraunces', 'Instrument Serif', Georgia, serif;
  font-style: italic;
  font-weight: 400;
  font-size: 19px;
  line-height: 1.55;
  color: var(--text);
}

/* Article CTA bar */
.article-cta {
  max-width: var(--reading);
  margin: 60px auto 40px;
  padding: 32px;
  background: rgba(0, 240, 255, 0.05);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: 12px;
  text-align: center;
}
.article-cta h3 {
  font-size: 22px;
  color: var(--text);
  margin-bottom: 10px;
  font-weight: 500;
}
.article-cta p {
  color: var(--text-body);
  margin-bottom: 20px;
  font-size: 15px;
}
.article-cta a {
  display: inline-block;
  padding: 14px 28px;
  background: var(--cyan);
  color: var(--bg);
  border-radius: 100px;
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.04em;
  transition: transform 0.25s, box-shadow 0.25s;
}
.article-cta a:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 240, 255, 0.25);
}

/* Related posts */
.related-posts {
  max-width: var(--max);
  margin: 80px auto 0;
  padding: 60px 48px 0;
  border-top: 1px solid var(--border);
}
.related-posts h3 {
  font-size: 13px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 32px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* Responsive */
@media (max-width: 900px) {
  nav.site-nav { padding: 16px 24px; }
  .site-nav .nav-links { display: none; }
  .site-nav .logo-svg { width: 136px; }
  .blog-hero { padding: 48px 24px 32px; }
  .blog-grid { padding: 32px 24px 60px; grid-template-columns: 1fr; gap: 24px; }
  .blog-grid .featured { grid-column: span 1; }
  .featured .blog-card-body { padding: 24px; }
  .featured .blog-card h2 { font-size: 22px; }
  .article-hero { padding: 40px 20px 32px; }
  .article-hero-image { padding: 0 20px; margin-bottom: 32px; }
  .article-body { padding: 0 20px; font-size: 16px; }
  .article-body .two-col, .article-body .three-col { grid-template-columns: 1fr; }
  .article-body .stat-row { grid-template-columns: 1fr; }
  .article-cta { margin: 40px 20px; padding: 28px 24px; }
  .related-posts { padding: 40px 24px 0; }
  .related-grid { grid-template-columns: 1fr; }
  .site-footer {
    flex-direction: column;
    gap: 12px;
    text-align: center;
    padding: 32px 24px;
  }
  .site-footer .footer-social { justify-content: center; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}