/* PROGRESS BAR */
#read-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: var(--accent);
  z-index: 10002;
  transition: width 0.08s linear;
  pointer-events: none;
}

/* BREADCRUMB */
.breadcrumb {
  background: var(--bg-card);
  border-bottom: 1px solid #e8ede8;
  padding: 0.5rem 2rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.breadcrumb a:hover { color: var(--primary); text-decoration: underline; }
.breadcrumb .sep { margin: 0 0.45rem; }

/* BLOG PAGE HEADER */
.blog-page-header {
  background: linear-gradient(135deg, #0d4f24, #1a7a3e);
  padding: 3rem 2rem 2.5rem;
  text-align: center;
}
.blog-page-header h1 {
  font-family: 'Lora', serif;
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 0.65rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.blog-byline {
  color: rgba(255,255,255,0.82);
  font-size: 0.96rem;
  margin-bottom: 0.4rem;
}
.blog-meta-row {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}
.blog-meta-row span {
  color: rgba(255,255,255,0.62);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.blog-header-actions {
  margin-top: 1.4rem;
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* PAGE LAYOUT */
.blog-outer {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2.25rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
  align-items: start;
}

/* SIDEBAR */
.section-sidebar {
  position: sticky;
  top: 52px;
}
.sidebar-inner {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid #eaf0ea;
  padding: 1.2rem 1rem;
}
.sidebar-heading {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.75rem;
  display: block;
}
.sidebar-link {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.32rem 0.5rem;
  border-radius: 6px;
  line-height: 1.35;
  margin-bottom: 0.1rem;
  transition: background 0.15s, color 0.15s;
}
.sidebar-link:hover { color: var(--primary); background: var(--primary-light); }
.sidebar-link.active-section { color: var(--primary); background: var(--primary-light); font-weight: 600; }

/* MOBILE JUMP DROPDOWN */
.jump-wrap { display: none; margin-bottom: 1.75rem; }
.jump-wrap label { font-size: 0.83rem; font-weight: 600; color: var(--text-muted); display: block; margin-bottom: 0.35rem; }
.jump-select {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border-radius: 10px;
  border: 1px solid #d1d5db;
  font-size: 0.93rem;
  font-family: inherit;
  background: #fff;
  color: var(--text-main);
}

/* ARTICLE CONTENT */
.blog-content { min-width: 0; }

.blog-section {
  margin-bottom: 2.75rem;
  scroll-margin-top: 60px;
}
.blog-section h2 {
  font-family: 'Lora', serif;
  font-size: 1.42rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 1rem;
  line-height: 1.3;
}
.blog-section p {
  color: var(--text-main);
  font-size: 1rem;
  line-height: 1.82;
  margin-bottom: 1rem;
}
.blog-section p:last-child { margin-bottom: 0; }

.cite {
  font-size: 0.79rem;
  color: var(--text-muted);
  font-style: italic;
  margin-left: 0.1rem;
}

/* FLIP CARD */
.flip-card-wrap {
  perspective: 1200px;
  margin: 1.75rem 0;
}
.flip-card {
  position: relative;
  width: 100%;
  min-height: 240px;
  transform-style: preserve-3d;
  transition: transform 0.65s ease;
}
.flip-card.flipped { transform: rotateY(180deg); }
.flip-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
}
.flip-front {
  background: #fff8f0;
  border: 2px solid var(--accent);
}
.flip-back {
  background: var(--primary-light);
  border: 2px solid var(--primary);
  transform: rotateY(180deg);
}
.flip-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}
.flip-front .flip-label { color: var(--accent); }
.flip-back .flip-label { color: var(--primary); }
.flip-face p {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-main);
  margin: 0 0 1rem;
  flex: 1;
}
.flip-btn {
  padding: 0.5rem 1.2rem;
  border-radius: 999px;
  border: none;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.87rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  align-self: flex-start;
  transition: background 0.2s;
}
.flip-btn-front { background: var(--accent); color: #fff; }
.flip-btn-front:hover { background: #c5692a; }
.flip-btn-back { background: var(--primary); color: #fff; }
.flip-btn-back:hover { background: var(--primary-dark); }

/* STAT COUNTERS */
.stat-counter-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
  margin: 2rem 0;
}
.stat-counter-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 1.4rem 1.1rem 1.2rem;
  box-shadow: var(--shadow);
  border: 1px solid #eaf0ea;
  text-align: center;
}
.counter-num {
  font-family: 'Lora', serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  display: block;
  line-height: 1.1;
}
.counter-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
  line-height: 1.4;
}

/* DATA TABLE */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin: 1.25rem 0 0.75rem;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  font-size: 0.88rem;
  min-width: 600px;
}
.data-table th {
  background: var(--dark);
  color: #fff;
  padding: 0.8rem 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.3px;
  white-space: nowrap;
}
.data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid #eaf0ea;
  color: var(--text-main);
  vertical-align: top;
  line-height: 1.5;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tbody tr { transition: background 0.15s; }
.data-table tbody tr:hover td { background: var(--primary-light); }
.table-caption {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.6rem;
  line-height: 1.5;
}

/* TOOLTIP */
.tip-wrap {
  position: relative;
  display: inline-block;
  margin-left: 0.3rem;
  vertical-align: middle;
}
.tip-icon {
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.78rem;
  transition: color 0.15s;
}
.tip-icon:hover { color: var(--primary); }
.tip-box {
  display: none;
  position: absolute;
  bottom: calc(100% + 7px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--dark);
  color: #fff;
  font-size: 0.73rem;
  padding: 0.38rem 0.6rem;
  border-radius: 6px;
  white-space: nowrap;
  z-index: 50;
  pointer-events: none;
  line-height: 1.4;
  max-width: 220px;
  white-space: normal;
  text-align: center;
}
.tip-box::after {
  content: '';
  position: absolute;
  top: 100%; left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--dark);
}
.tip-wrap:hover .tip-box,
.tip-wrap.show .tip-box { display: block; }

/* LIFECYCLE DIAGRAM */
.lifecycle-wrap { margin: 1.5rem 0; }
.lifecycle-flow {
  display: flex;
  align-items: flex-start;
  gap: 0;
}
.lc-stage {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid #eaf0ea;
  border-radius: 12px;
  padding: 1rem 0.7rem;
  text-align: center;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
  position: relative;
  min-width: 0;
}
.lc-stage:hover, .lc-stage[aria-expanded="true"] {
  background: var(--primary-light);
  border-color: var(--primary);
  box-shadow: 0 4px 14px rgba(18,128,58,0.12);
}
.lc-icon {
  font-size: 1.35rem;
  color: var(--primary);
  margin-bottom: 0.45rem;
  display: block;
}
.lc-name {
  font-size: 0.73rem;
  font-weight: 600;
  color: var(--dark);
  line-height: 1.3;
}
.lc-desc {
  display: none;
  margin-top: 0.55rem;
  font-size: 0.74rem;
  color: var(--text-muted);
  line-height: 1.5;
  text-align: left;
}
.lc-stage[aria-expanded="true"] .lc-desc { display: block; }
.lc-arrow {
  display: flex;
  align-items: center;
  padding: 0 0.3rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  flex-shrink: 0;
  margin-top: 1.5rem;
}

/* VERDICT METER */
.verdict-wrap {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
  border: 1px solid #eaf0ea;
  margin: 0.5rem 0;
}
.verdict-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 0.65rem;
}
.verdict-left { color: var(--primary); }
.verdict-right { color: #dc2626; }
.verdict-track {
  position: relative;
  height: 10px;
  background: linear-gradient(to right, #a8e6c0, #ffd580, #fca5a5);
  border-radius: 999px;
}
.verdict-needle {
  position: absolute;
  top: 50%; left: 0%;
  transform: translate(-50%, -50%);
  width: 22px; height: 22px;
  background: var(--dark);
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.32);
  transition: left 1.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.verdict-caption {
  text-align: center;
  font-size: 0.87rem;
  color: var(--text-muted);
  margin-top: 1.1rem;
  font-style: italic;
}

/* TABS */
.tab-buttons {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.2rem;
  flex-wrap: wrap;
}
.tab-btn {
  padding: 0.52rem 1.2rem;
  border-radius: 999px;
  border: 2px solid #e5e7eb;
  background: #fff;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.tab-btn:not(.active):hover {
  border-color: var(--primary);
  color: var(--primary);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.tab-panel ul {
  list-style: none;
  padding: 0; margin: 0;
}
.tab-panel ul li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.7rem 0;
  border-bottom: 1px solid #f3f4f6;
  font-size: 0.96rem;
  color: var(--text-main);
  line-height: 1.65;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.tab-panel ul li:last-child { border-bottom: none; }
.tab-panel.active li.vis { opacity: 1; transform: translateY(0); }
.tab-panel ul li .tab-icon { margin-top: 0.25rem; flex-shrink: 0; font-size: 0.9rem; }
.sustainable-icon { color: var(--primary); }
.notsus-icon { color: #dc2626; }

/* BIBLIOGRAPHY ACCORDION */
.bib-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.72rem 1.3rem;
  background: var(--primary-light);
  border: 2px solid var(--primary);
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-dark);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s;
}
.bib-toggle:hover { background: #c8e8d4; }
.bib-toggle .bib-chevron { transition: transform 0.3s; display: inline-block; }
.bib-toggle.open .bib-chevron { transform: rotate(180deg); }
.bib-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.42s ease;
}
.bib-body ol {
  padding: 1.2rem 1rem 0.5rem 2rem;
  margin: 0;
}
.bib-body ol li {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.72;
  margin-bottom: 0.65rem;
}
.bib-body ol li a { color: var(--primary); word-break: break-all; }
.bib-body ol li a:hover { text-decoration: underline; }

/* INSIGHT CARD */
.insight-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}
.insight-icon {
  font-size: 1.5rem;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 0.1rem;
}
.insight-body { flex: 1; min-width: 0; }
.insight-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--primary);
  display: block;
  margin-bottom: 0.3rem;
}
.insight-body p { margin: 0; font-size: 0.95rem; line-height: 1.65; color: var(--text-main); }

/* QUERY COMPARISON */
.query-compare {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid #eaf0ea;
  border-radius: var(--radius);
  padding: 1.1rem 1rem;
  margin: 1.5rem 0;
  box-shadow: var(--shadow);
}
.qc-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.25rem;
}
.qc-icon { font-size: 1.5rem; color: var(--primary); }
.qc-muted .qc-icon { color: var(--text-muted); }
.qc-label { font-size: 0.78rem; font-weight: 600; color: var(--dark); line-height: 1.3; }
.qc-muted .qc-label { color: var(--text-muted); }
.qc-sub { font-size: 0.7rem; color: var(--text-muted); line-height: 1.3; }
.qc-mid {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 0.25rem;
}
.qc-mult { font-size: 1.5rem; font-weight: 800; color: var(--accent); line-height: 1; }
.qc-more { font-size: 0.6rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }

/* PULL QUOTE */
.pull-quote {
  border-left: 4px solid var(--accent);
  background: #fff8f0;
  padding: 1rem 1.35rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}
.pull-quote p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-main);
  margin: 0 0 0.45rem;
  font-style: italic;
}
.pull-quote cite { font-size: 0.8rem; color: var(--text-muted); font-style: normal; font-weight: 600; }

/* BACK TO BLOGS BUTTON */
.back-to-blogs-wrap {
  text-align: center;
  padding: 2rem 1rem 3rem;
}
.back-to-blogs-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.75rem;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  transition: background 0.2s, transform 0.2s;
}
.back-to-blogs-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* RESPONSIVE */
@media (max-width: 860px) {
  .blog-outer {
    grid-template-columns: 1fr;
    padding: 1.75rem 1.1rem 3rem;
  }
  .section-sidebar { display: none; }
  .jump-wrap { display: block; }
}
@media (max-width: 600px) {
  .blog-page-header h1 { font-size: 1.5rem; }

  /* Lifecycle: vertical flowchart, content opens right of the icon */
  .lifecycle-flow { flex-direction: column; gap: 0; align-items: stretch; }
  .lc-stage {
    flex: none;
    display: grid;
    grid-template-columns: 2.2rem 1fr;
    grid-template-rows: auto auto;
    column-gap: 0.7rem;
    align-items: start;
    text-align: left;
    padding: 0.9rem 1rem;
  }
  .lc-icon {
    grid-column: 1;
    grid-row: 1 / 3;
    align-self: start;
    font-size: 1.15rem;
    margin-bottom: 0;
    padding-top: 0.06rem;
  }
  .lc-name {
    grid-column: 2;
    grid-row: 1;
    align-self: center;
  }
  .lc-desc {
    grid-column: 2;
    grid-row: 2;
    margin-top: 0.4rem;
  }
  .lc-arrow {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 0;
    padding: 0.1rem 0;
    transform: none;
    font-size: 0.78rem;
  }
  .lc-arrow i { display: inline-block; transform: rotate(90deg); }

  /* Table: stacked card layout */
  .table-wrap { overflow-x: visible; box-shadow: none; background: transparent; }
  .data-table,
  .data-table tbody { display: block; width: 100%; }
  .data-table { min-width: 0; font-size: 0.85rem; }
  .data-table thead { display: none; }
  .data-table tbody tr {
    display: block;
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid #eaf0ea;
    margin-bottom: 1.1rem;
    overflow: hidden;
  }
  .data-table tbody tr:hover td { background: transparent; }
  .data-table td {
    display: block;
    padding: 0.55rem 1rem;
    border-bottom: 1px solid #f3f4f6;
    text-align: left;
    vertical-align: top;
  }
  .data-table td:last-child { border-bottom: none; }
  .data-table td::before {
    content: attr(data-label);
    display: block;
    font-size: 0.66rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--primary);
    margin-bottom: 0.2rem;
  }
}
@media (max-width: 480px) {
  .stat-counter-grid { grid-template-columns: 1fr; }
  .flip-card { min-height: 300px; }
  .blog-outer { padding: 1.25rem 1rem 2.5rem; }
  .query-compare { flex-direction: column; gap: 0.75rem; }
  .qc-mid { flex-direction: row; gap: 0.4rem; align-items: center; }
}

/* REDUCED MOTION */
@media (prefers-reduced-motion: reduce) {
  .flip-card { transition: none; }
  .verdict-needle { transition: none; }
  .tab-panel ul li { transition: none; opacity: 1; transform: none; }
  .bib-body { transition: none; }
  #read-progress { transition: none; }
}