/* ============================================================
   EPC Checker — Article Pages
   Editorial / Magazine aesthetic
   Authoritative UK publication feel — warm, readable, distinctive
   ============================================================ */

/* --- Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,500;0,9..144,700;0,9..144,900;1,9..144,400&family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&display=swap');

/* --- Article Design Tokens --- */
:root {
  --art-font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --art-font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  --art-ink: #1a1715;
  --art-ink-secondary: #4a4540;
  --art-ink-muted: #7a756e;
  --art-paper: #faf8f5;
  --art-paper-warm: #f5f0ea;
  --art-paper-cream: #eee8df;
  --art-white: #ffffff;

  --art-accent: #c4572a;
  --art-accent-hover: #a8461f;
  --art-accent-soft: rgba(196, 87, 42, 0.08);
  --art-accent-border: rgba(196, 87, 42, 0.2);

  --art-teal: #1a7a6d;
  --art-teal-soft: rgba(26, 122, 109, 0.07);

  /* EPC spectrum for decorative use */
  --epc-green: #008054;
  --epc-lime: #8dce46;
  --epc-yellow: #ffd500;
  --epc-orange: #ef8023;
  --epc-red: #e9153b;

  --art-radius: 4px;
  --art-reading-width: 680px;
  --art-wide-width: 960px;
  --art-shadow-subtle: 0 1px 2px rgba(26, 23, 21, 0.06);
  --art-shadow-card: 0 2px 8px rgba(26, 23, 21, 0.08), 0 1px 2px rgba(26, 23, 21, 0.04);
  --art-shadow-elevated: 0 8px 24px rgba(26, 23, 21, 0.1), 0 2px 6px rgba(26, 23, 21, 0.06);
  --art-transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Article Body Override --- */
body.article-page {
  background: var(--art-paper);
  color: var(--art-ink);
  font-family: var(--art-font-body);
  font-size: 1.0625rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Article Header (Hero Area) --- */
body.article-page .article-header {
  background: var(--art-ink);
  color: var(--art-paper);
  padding: 0;
  border-bottom: none;
  position: relative;
  overflow: hidden;
}

body.article-page .article-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(196, 87, 42, 0.15) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 80% 20%, rgba(26, 122, 109, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

/* EPC spectrum bar at very top */
body.article-page .article-header::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg,
    var(--epc-green) 0%,
    var(--epc-lime) 25%,
    var(--epc-yellow) 50%,
    var(--epc-orange) 75%,
    var(--epc-red) 100%
  );
}

body.article-page .article-header .container {
  position: relative;
  z-index: 1;
  padding-top: 3rem;
  padding-bottom: 3.5rem;
  max-width: var(--art-wide-width);
}

body.article-page .breadcrumb {
  margin-bottom: 1.5rem;
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
body.article-page .breadcrumb a {
  color: rgba(250, 248, 245, 0.6);
  transition: color var(--art-transition);
}
body.article-page .breadcrumb a:hover { color: var(--art-paper); }
body.article-page .breadcrumb span { color: rgba(250, 248, 245, 0.35); }

body.article-page .article-header h1 {
  font-family: var(--art-font-display);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  color: var(--art-paper);
  max-width: 720px;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  font-optical-sizing: auto;
}

body.article-page .updated-date {
  color: rgba(250, 248, 245, 0.5);
  font-size: 0.8125rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-weight: 500;
}

/* Reading time + meta line */
.article-meta-line {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}
.article-meta-line span {
  color: rgba(250, 248, 245, 0.5);
  font-size: 0.8125rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-weight: 500;
}
.article-meta-line span::before {
  content: '•';
  margin-right: 0.5rem;
  opacity: 0.4;
}
.article-meta-line span:first-child::before { display: none; }

/* --- Article Layout --- */
body.article-page .section {
  padding: 0;
  background: var(--art-paper);
}

body.article-page .section > .container {
  max-width: var(--art-wide-width);
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 3rem;
  padding-top: 3rem;
  padding-bottom: 4rem;
  align-items: start;
}

/* --- Article Sidebar (TOC wrapper) --- */
body.article-page .article-sidebar {
  order: 2;
  position: relative;
}

/* --- Table of Contents (Sidebar) --- */
body.article-page .toc {
  background: var(--art-white);
  border: 1px solid rgba(26, 23, 21, 0.08);
  border-radius: var(--art-radius);
  padding: 1.5rem;
  margin: 0;
  position: sticky;
  top: 80px;
  box-shadow: var(--art-shadow-subtle);
}
body.article-page .toc h4 {
  font-family: var(--art-font-display);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--art-ink-muted);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--art-accent);
}
body.article-page .toc ol {
  padding-left: 0 !important;
  margin: 0 !important;
  counter-reset: toc-items;
  list-style: none !important;
}
body.article-page .toc ol li {
  counter-increment: toc-items;
  margin-bottom: 0 !important;
  padding-left: 0 !important;
  border-left: 2px solid transparent;
  transition: border-color var(--art-transition);
  position: relative;
}
body.article-page .toc ol li::before {
  display: none !important;
}
body.article-page .toc ol li a {
  display: block;
  padding: 0.4rem 0 0.4rem 1rem;
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--art-ink-secondary);
  text-decoration: none;
  transition: all var(--art-transition);
  font-weight: 400;
}
body.article-page .toc ol li a:hover {
  color: var(--art-accent);
  text-decoration: none;
}
body.article-page .toc ol li a::before {
  content: counter(toc-items, decimal-leading-zero) "  ";
  color: var(--art-ink-muted);
  font-weight: 500;
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
  opacity: 0.6;
}
body.article-page .toc li.toc-active {
  border-left-color: var(--art-accent);
}
body.article-page .toc li.toc-active a {
  color: var(--art-accent);
  font-weight: 600;
}

/* --- Article Content --- */
body.article-page .article-content {
  max-width: var(--art-reading-width);
  padding: 0;
  order: 1;
  font-family: var(--art-font-body);
}

/* Headings */
body.article-page .article-content h2 {
  font-family: var(--art-font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  line-height: 1.2;
  color: var(--art-ink);
  letter-spacing: -0.01em;
  margin-top: 3rem;
  margin-bottom: 1rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(26, 23, 21, 0.08);
  scroll-margin-top: 90px;
}
body.article-page .article-content h2:first-of-type {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

body.article-page .article-content h3 {
  font-family: var(--art-font-display);
  font-weight: 500;
  font-size: 1.25rem;
  color: var(--art-ink);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.005em;
}

/* Paragraphs */
body.article-page .article-content p {
  margin-bottom: 1.25rem;
  color: var(--art-ink-secondary);
  font-size: 1.0625rem;
  line-height: 1.8;
}

/* First paragraph after h2 — drop cap effect via larger first line */
body.article-page .article-content h2 + p {
  font-size: 1.125rem;
  color: var(--art-ink);
}

/* Links */
body.article-page .article-content a {
  color: var(--art-accent);
  text-decoration: underline;
  text-decoration-color: var(--art-accent-border);
  text-underline-offset: 2px;
  transition: all var(--art-transition);
}
body.article-page .article-content a:hover {
  color: var(--art-accent-hover);
  text-decoration-color: var(--art-accent);
}

/* Lists */
body.article-page .article-content ul,
body.article-page .article-content ol {
  margin: 1.25rem 0;
  padding-left: 0;
}
body.article-page .article-content ul { list-style: none; }
body.article-page .article-content ul li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--art-ink-secondary);
}
body.article-page .article-content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--art-accent);
}
body.article-page .article-content ol {
  counter-reset: article-ol;
  list-style: none;
}
body.article-page .article-content ol li {
  counter-increment: article-ol;
  position: relative;
  padding-left: 2.25rem;
  margin-bottom: 0.75rem;
  color: var(--art-ink-secondary);
}
body.article-page .article-content ol li::before {
  content: counter(article-ol);
  position: absolute;
  left: 0;
  top: 0;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--art-accent-soft);
  color: var(--art-accent);
  font-weight: 700;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-variant-numeric: tabular-nums;
}
body.article-page .article-content li strong {
  color: var(--art-ink);
}

/* Blockquote — Pull quote style */
body.article-page .article-content blockquote {
  border-left: none;
  background: none;
  margin: 2.5rem 0;
  padding: 2rem 0;
  border-top: 2px solid var(--art-ink);
  border-bottom: 1px solid rgba(26, 23, 21, 0.12);
  border-radius: 0;
  position: relative;
}
body.article-page .article-content blockquote::before {
  content: '';
  position: absolute;
  top: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background: var(--art-accent);
}
body.article-page .article-content blockquote p {
  font-family: var(--art-font-display);
  font-size: 1.1875rem;
  font-weight: 500;
  font-style: italic;
  line-height: 1.6;
  color: var(--art-ink);
}
body.article-page .article-content blockquote strong {
  font-style: normal;
  color: var(--art-accent);
  font-weight: 700;
}

/* Table */
body.article-page .article-content table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 2rem 0;
  border: 1px solid rgba(26, 23, 21, 0.1);
  border-radius: var(--art-radius);
  overflow: hidden;
  box-shadow: var(--art-shadow-subtle);
}
body.article-page .article-content th {
  background: var(--art-ink);
  color: var(--art-paper);
  font-family: var(--art-font-body);
  font-weight: 600;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.875rem 1.25rem;
  border: none;
  text-align: left;
}
body.article-page .article-content td {
  padding: 0.875rem 1.25rem;
  font-size: 0.9375rem;
  border: none;
  border-bottom: 1px solid rgba(26, 23, 21, 0.06);
  color: var(--art-ink-secondary);
}
body.article-page .article-content tr:last-child td {
  border-bottom: none;
}
body.article-page .article-content tr:nth-child(even) td {
  background: rgba(26, 23, 21, 0.02);
}

/* Rating badge in tables */
body.article-page .rating-badge {
  font-family: var(--art-font-body);
  font-weight: 800;
  border-radius: 4px;
  width: 36px;
  height: 36px;
  font-size: 1rem;
}

/* --- CTA Box --- */
body.article-page .cta-box {
  background: var(--art-white);
  border: 1px solid rgba(26, 23, 21, 0.1);
  border-left: 4px solid var(--art-accent);
  border-radius: 0 var(--art-radius) var(--art-radius) 0;
  padding: 2rem 2rem 2rem 2.25rem;
  margin: 2.5rem 0;
  text-align: left;
  box-shadow: var(--art-shadow-card);
}
body.article-page .cta-box h3 {
  font-family: var(--art-font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--art-ink);
  margin-bottom: 0.5rem;
}
body.article-page .cta-box p {
  color: var(--art-ink-muted);
  font-size: 0.9375rem;
  margin-bottom: 1rem;
  line-height: 1.6;
}
body.article-page .cta-box .btn-primary {
  background: var(--art-accent);
  color: #fff !important;
  border-radius: var(--art-radius);
  font-family: var(--art-font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.75rem 1.75rem;
  transition: all var(--art-transition);
  border: none;
  text-decoration: none;
}
body.article-page .cta-box .btn-primary:hover {
  background: var(--art-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(196, 87, 42, 0.25);
}

/* --- FAQ Section --- */
body.article-page .faq-list {
  max-width: none;
  margin: 1.5rem 0 0;
}
body.article-page .faq-item {
  border-bottom: 1px solid rgba(26, 23, 21, 0.08);
}
body.article-page .faq-question {
  font-family: var(--art-font-body);
  font-weight: 600;
  font-size: 1rem;
  color: var(--art-ink);
  padding: 1.25rem 0;
  transition: color var(--art-transition);
}
body.article-page .faq-question:hover {
  color: var(--art-accent);
}
body.article-page .faq-question::after {
  color: var(--art-accent);
  font-weight: 400;
  font-size: 1.25rem;
}
body.article-page .faq-answer-inner {
  color: var(--art-ink-secondary);
  line-height: 1.75;
  font-size: 0.9375rem;
  padding-bottom: 1.5rem;
}

/* --- Related Guides Section --- */
body.article-page .article-content > h2:last-of-type + ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  background: var(--art-white);
  border: 1px solid rgba(26, 23, 21, 0.1);
  border-radius: var(--art-radius);
  overflow: hidden;
  box-shadow: var(--art-shadow-subtle);
  margin-bottom: 2rem;
}
body.article-page .article-content > h2:last-of-type + ul li {
  padding: 0;
  margin: 0;
  border-bottom: 1px solid rgba(26, 23, 21, 0.06);
}
body.article-page .article-content > h2:last-of-type + ul li:last-child {
  border-bottom: none;
}
body.article-page .article-content > h2:last-of-type + ul li::before {
  display: none;
}
body.article-page .article-content > h2:last-of-type + ul li a {
  display: flex;
  align-items: center;
  padding: 1rem 1.5rem;
  text-decoration: none;
  color: var(--art-ink);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: all var(--art-transition);
}
body.article-page .article-content > h2:last-of-type + ul li a::after {
  content: '→';
  margin-left: auto;
  color: var(--art-ink-muted);
  transition: all var(--art-transition);
}
body.article-page .article-content > h2:last-of-type + ul li a:hover {
  background: var(--art-accent-soft);
  color: var(--art-accent);
}
body.article-page .article-content > h2:last-of-type + ul li a:hover::after {
  color: var(--art-accent);
  transform: translateX(4px);
}

/* --- Network Banner (Article-specific) --- */
body.article-page .network-banner {
  background: var(--art-paper-warm);
  border-top: 1px solid rgba(26, 23, 21, 0.08);
  padding: 2.5rem 0;
}
body.article-page .network-banner h3 {
  font-family: var(--art-font-body);
  font-size: 0.75rem;
  color: var(--art-ink-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}
body.article-page .network-link {
  background: var(--art-white);
  border-color: rgba(26, 23, 21, 0.1);
  font-family: var(--art-font-body);
  font-size: 0.8125rem;
  color: var(--art-ink-secondary);
  border-radius: var(--art-radius);
}
body.article-page .network-link:hover {
  border-color: var(--art-accent);
  color: var(--art-accent);
  box-shadow: var(--art-shadow-subtle);
}

/* --- Footer Override --- */
body.article-page .site-footer {
  background: var(--art-ink);
}
body.article-page .footer-col h4 {
  font-family: var(--art-font-display);
  font-weight: 500;
  font-size: 0.9375rem;
  letter-spacing: 0;
}
body.article-page .footer-col a {
  font-family: var(--art-font-body);
}

/* --- Header Override (Sticky) --- */
body.article-page .site-header {
  background: var(--art-white);
  border-bottom: 1px solid rgba(26, 23, 21, 0.06);
  box-shadow: var(--art-shadow-subtle);
}
body.article-page .logo {
  font-family: var(--art-font-body);
  font-weight: 700;
}
body.article-page .main-nav a {
  font-family: var(--art-font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--art-ink-secondary);
}
body.article-page .main-nav a:hover {
  color: var(--art-accent);
}
body.article-page .main-nav .btn-primary {
  background: var(--art-accent);
  font-size: 0.8125rem;
  padding: 0.5rem 1rem;
  border-radius: var(--art-radius);
}
body.article-page .main-nav .btn-primary:hover {
  background: var(--art-accent-hover);
}

/* --- Scroll Progress Bar --- */
.article-progress {
  position: fixed;
  top: 64px;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--art-accent), var(--art-teal));
  z-index: 99;
  transition: width 0.1s linear;
}

/* --- Info Card — for key stats / callouts --- */
.info-card {
  background: var(--art-teal-soft);
  border: 1px solid rgba(26, 122, 109, 0.15);
  border-radius: var(--art-radius);
  padding: 1.5rem 1.75rem;
  margin: 2rem 0;
}
.info-card h4 {
  font-family: var(--art-font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--art-teal);
  margin-bottom: 0.5rem;
}
.info-card p {
  font-size: 0.9375rem;
  margin: 0;
  color: var(--art-ink-secondary);
}

/* Warning card variant */
.info-card.warning {
  background: rgba(233, 21, 59, 0.04);
  border-color: rgba(233, 21, 59, 0.15);
}
.info-card.warning h4 {
  color: #c41230;
}

/* --- Responsive --- */
@media (max-width: 860px) {
  body.article-page .section > .container {
    grid-template-columns: 1fr;
    gap: 0;
    padding-top: 0;
  }

  body.article-page .article-sidebar {
    order: 0;
  }
  body.article-page .toc {
    position: static;
    border-radius: 0;
    border-left: none;
    border-right: none;
    margin: 0 -1.25rem;
    padding: 1.25rem 1.25rem;
    background: var(--art-paper-warm);
    box-shadow: none;
    border: none;
    border-bottom: 1px solid rgba(26, 23, 21, 0.08);
  }

  body.article-page .article-content {
    padding-top: 2rem;
  }

  body.article-page .article-header .container {
    padding-top: 2rem;
    padding-bottom: 2.5rem;
  }

  body.article-page .article-header h1 {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
  }
}

@media (max-width: 480px) {
  body.article-page .article-content h2 {
    font-size: 1.375rem;
  }

  body.article-page .article-content blockquote {
    margin: 2rem -0.5rem;
    padding: 1.5rem 0.5rem;
  }

  body.article-page .cta-box {
    padding: 1.5rem;
    margin-left: -0.5rem;
    margin-right: -0.5rem;
  }
}

/* --- Print (article-specific) --- */
@media print {
  body.article-page .article-header { background: #fff; color: #000; }
  body.article-page .article-header h1 { color: #000; }
  body.article-page .article-header::before,
  body.article-page .article-header::after,
  .article-progress { display: none; }
  body.article-page .toc { display: none; }
  body.article-page .section > .container { grid-template-columns: 1fr; }
}

/* --- Entrance Animations --- */
@keyframes articleFadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

body.article-page .article-header .container > * {
  animation: articleFadeUp 0.5s cubic-bezier(0.23, 1, 0.32, 1) backwards;
}
body.article-page .breadcrumb { animation-delay: 0.05s; }
body.article-page .article-header h1 { animation-delay: 0.12s; }
body.article-page .updated-date { animation-delay: 0.18s; }
body.article-page .article-meta-line { animation-delay: 0.22s; }