/* ============================================================
   TERAVENT — Pathways Page Stylesheet
   Extends css/style.css — load both files
   ============================================================ */

/* ─── PAGE HERO ─── */
.page-hero {
  background: linear-gradient(135deg, #1a2d1e 0%, #1e3a2a 40%, #1a3530 100%);
  padding: 7rem 7rem 5rem;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(200,222,206,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,222,206,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--forest), var(--gold-mid), var(--sky), var(--forest));
  background-size: 200% 100%;
  animation: gradientFlow 6s ease infinite;
}
@keyframes gradientFlow {
  0%   { background-position: 0% 0%; }
  50%  { background-position: 100% 0%; }
  100% { background-position: 0% 0%; }
}
.page-hero-inner {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: end;
}
.page-hero-left {}
.page-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(200,222,206,0.5);
  margin-bottom: 2rem;
}
.page-breadcrumb a {
  color: rgba(200,222,206,0.5);
  transition: color 0.2s;
}
.page-breadcrumb a:hover { color: rgba(200,222,206,0.9); }
.page-breadcrumb span { color: var(--gold-light); }
.breadcrumb-sep { opacity: 0.4; }

.page-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(2.8rem, 4.5vw, 4.8rem);
  font-weight: 300;
  line-height: 1.06;
  color: var(--white);
  margin-bottom: 1.5rem;
  animation: fadeUp 0.8s 0.2s ease both;
}
.page-title em {
  font-style: italic;
  color: var(--dew);
}
.page-title .accent { color: var(--gold-light); }

.page-subtitle {
  font-size: 1.08rem;
  line-height: 1.75;
  color: rgba(200,222,206,0.72);
  max-width: 520px;
  animation: fadeUp 0.8s 0.4s ease both;
}

.page-hero-right {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  animation: fadeUp 0.8s 0.5s ease both;
}
.hero-stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(200,222,206,0.1);
}
.hero-stat-box {
  background: rgba(14,28,18,0.7);
  padding: 1.4rem 1.2rem;
  text-align: center;
  backdrop-filter: blur(8px);
}
.hero-stat-box-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.9rem;
  font-weight: 300;
  color: var(--gold-light);
  line-height: 1;
}
.hero-stat-box-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.56rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(200,222,206,0.55);
  margin-top: 0.3rem;
}
.hero-note {
  font-family: 'DM Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: rgba(200,222,206,0.35);
  text-align: right;
  padding-top: 0.4rem;
}

@keyframes fadeUp {
  from { opacity:0; transform:translateY(20px); }
  to   { opacity:1; transform:translateY(0); }
}

/* ─── FILTER BAR ─── */
.filter-bar {
  background: var(--white);
  border-bottom: 1px solid var(--border-light);
  padding: 0 7rem;
  display: flex;
  align-items: center;
  gap: 0;
  position: sticky;
  top: 72px;
  z-index: 50;
  box-shadow: 0 2px 12px rgba(26,45,30,0.06);
}
.filter-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-light);
  padding: 1.1rem 1.5rem 1.1rem 0;
  border-right: 1px solid var(--border-light);
  margin-right: 1rem;
  white-space: nowrap;
}
.filter-chips {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  padding: 0.8rem 0;
  flex: 1;
}
.filter-chip {
  font-family: 'DM Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  border: 1px solid var(--border-light);
  background: transparent;
  padding: 0.35rem 0.9rem;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.2s;
  white-space: nowrap;
}
.filter-chip:hover {
  border-color: var(--forest);
  color: var(--forest);
  background: var(--foam);
}
.filter-chip.active {
  background: var(--forest);
  border-color: var(--forest);
  color: var(--white);
}
.filter-count {
  margin-left: auto;
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--text-light);
  padding: 1.1rem 0 1.1rem 1.5rem;
  border-left: 1px solid var(--border-light);
  white-space: nowrap;
}
.filter-count span {
  color: var(--forest);
  font-weight: 500;
}

/* ─── PATHWAY EXPLORER ─── */
.pathway-explorer {
  background: var(--surface-base);
  padding: 5rem 7rem 8rem;
}

/* ─── PATHWAY ITEM (expandable) ─── */
.pathway-item {
  background: var(--white);
  border: 1px solid var(--border-light);
  margin-bottom: 1.5px;
  transition: border-color 0.3s;
  position: relative;
  overflow: hidden;
}
.pathway-item::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: transparent;
  transition: background 0.3s;
}
.pathway-item.active {
  border-color: var(--border-mid);
}
.pathway-item.active::before {
  background: var(--forest);
}
.pathway-item[data-category="marine"].active::before { background: var(--sky); }
.pathway-item[data-category="engineered"].active::before { background: var(--gold-mid); }
.pathway-item[data-category="geochemical"].active::before { background: #8a6a2e; }
.pathway-item[data-category="terrestrial"].active::before { background: var(--forest); }

.pathway-header {
  display: grid;
  grid-template-columns: 80px 1fr auto auto;
  gap: 0;
  align-items: center;
  cursor: pointer;
  padding: 0;
  transition: background 0.2s;
  user-select: none;
}
.pathway-header:hover { background: rgba(232,242,235,0.4); }

.pathway-num-col {
  padding: 2.2rem 1.5rem;
  text-align: center;
  border-right: 1px solid var(--border-light);
  align-self: stretch;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pathway-num-badge {
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--text-light);
}

.pathway-title-col {
  padding: 2.2rem 2.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.pathway-icon-wrap {
  width: 48px; height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
  transition: transform 0.2s;
}
.pathway-header:hover .pathway-icon-wrap { transform: scale(1.05); }

/* Category colours for icon bg */
[data-category="marine"]     .pathway-icon-wrap { background: rgba(46,107,126,0.12); }
[data-category="terrestrial"] .pathway-icon-wrap { background: rgba(45,94,58,0.12); }
[data-category="engineered"] .pathway-icon-wrap { background: rgba(176,142,68,0.12); }
[data-category="geochemical"] .pathway-icon-wrap { background: rgba(138,106,46,0.12); }

.pathway-title-text h3 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: 0.25rem;
}
.pathway-title-text p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.pathway-meta-col {
  padding: 2.2rem 2rem;
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  min-width: 220px;
}
.pathway-tag-sm {
  font-family: 'DM Mono', monospace;
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border: 1px solid;
  border-radius: 2px;
}
.tag-marine     { color: var(--sky); border-color: rgba(46,107,126,0.35); background: rgba(46,107,126,0.06); }
.tag-terrestrial { color: var(--forest); border-color: rgba(45,94,58,0.35); background: rgba(45,94,58,0.06); }
.tag-engineered { color: var(--gold-mid); border-color: var(--border-gold); background: var(--gold-pale); }
.tag-geochemical { color: #7a5a1e; border-color: rgba(122,90,30,0.35); background: rgba(240,230,204,0.5); }
.tag-durability {
  color: var(--text-muted);
  border-color: var(--border-light);
  background: var(--surface-tinted);
}

.pathway-toggle-col {
  padding: 2.2rem 2rem;
  border-left: 1px solid var(--border-light);
  align-self: stretch;
  display: flex;
  align-items: center;
  justify-content: center;
}
.toggle-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  transition: all 0.3s;
}
.pathway-item.active .toggle-icon {
  background: var(--forest);
  border-color: var(--forest);
  color: var(--white);
  transform: rotate(180deg);
}

/* ─── EXPAND PANEL ─── */
.pathway-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.4,0,0.2,1);
  border-top: 0px solid var(--border-light);
}
.pathway-item.active .pathway-panel {
  max-height: 900px;
  border-top-width: 1px;
}
.pathway-panel-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0;
  background: var(--border-light);
  border-top: 1px solid var(--border-light);
}
.panel-section {
  background: var(--white);
  padding: 2.5rem 2.5rem;
}
.panel-section + .panel-section {
  border-left: 1px solid var(--border-light);
}
.panel-section-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-mid);
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.panel-section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-gold);
  opacity: 0.5;
}
.panel-section h4 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 0.8rem;
  line-height: 1.25;
}
.panel-section p {
  font-size: 0.85rem;
  line-height: 1.72;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}
.panel-section p:last-child { margin-bottom: 0; }

/* Metrics */
.panel-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border-light);
  margin-top: 1.5rem;
}
.panel-metric {
  background: var(--surface-tinted);
  padding: 1rem;
}
.panel-metric-val {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--forest);
  line-height: 1;
}
.panel-metric-lbl {
  font-family: 'DM Mono', monospace;
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Sub-types list */
.subtypes-list {
  list-style: none;
  margin-top: 0.5rem;
}
.subtypes-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.84rem;
  color: var(--text-secondary);
}
.subtypes-list li:last-child { border-bottom: none; }
.subtypes-list li::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--sage-mid);
  flex-shrink: 0;
  margin-top: 0.45rem;
}

/* MRV indicators */
.mrv-bars {
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.mrv-bar-row {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.mrv-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-secondary);
}
.mrv-bar-label span:last-child {
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  color: var(--text-muted);
}
.mrv-bar-track {
  height: 4px;
  background: var(--border-light);
  border-radius: 2px;
  overflow: hidden;
}
.mrv-bar-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--forest);
  transition: width 0.8s ease;
  width: 0%;
}
.pathway-item.active .mrv-bar-fill {
  width: var(--fill-width, 70%);
}
.mrv-bar-fill.gold { background: var(--gold-mid); }
.mrv-bar-fill.sky  { background: var(--sky); }

/* Panel actions */
.panel-actions {
  grid-column: 1 / -1;
  background: var(--cream);
  padding: 1.5rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-light);
  gap: 1rem;
}
.panel-actions-left {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  align-items: center;
}
.panel-link {
  font-family: 'DM Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--forest);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: gap 0.2s;
}
.panel-link:hover { gap: 0.7rem; }
.panel-link-sep {
  color: var(--border-mid);
  font-size: 0.8rem;
}

/* ─── HIDDEN BY FILTER ─── */
.pathway-item.filtered-out {
  display: none;
}

/* ─── COMPARISON TABLE ─── */
.comparison-section {
  padding: 7rem 7rem;
  background: var(--white);
  border-top: 4px solid var(--gold-mid);
}
.comparison-header {
  max-width: 680px;
  margin: 0 auto 4rem;
  text-align: center;
}
.comparison-header .section-label { justify-content: center; }
.comparison-header .section-label::after { display: none; }
.comparison-header p {
  font-size: 0.98rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-top: 0.8rem;
}

.comparison-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-light);
  border-radius: 4px;
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}
.comparison-table th {
  background: var(--ink);
  color: rgba(200,222,206,0.8);
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 1.1rem 1.5rem;
  text-align: left;
  font-weight: 400;
  white-space: nowrap;
}
.comparison-table th:first-child { color: var(--gold-light); }
.comparison-table td {
  padding: 1.1rem 1.5rem;
  font-size: 0.84rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
}
.comparison-table tr:last-child td { border-bottom: none; }
.comparison-table tr:hover td { background: var(--foam); }
.comparison-table td:first-child {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1rem;
  font-weight: 400;
  color: var(--ink);
  white-space: nowrap;
}
.comparison-table td.td-icon { font-size: 1.2rem; }

/* Dot rating */
.dot-rating {
  display: flex;
  gap: 3px;
  align-items: center;
}
.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border-mid);
}
.dot.filled      { background: var(--forest); }
.dot.filled.gold { background: var(--gold-mid); }
.dot.filled.sky  { background: var(--sky); }

/* Status pill */
.status-pill {
  display: inline-block;
  font-family: 'DM Mono', monospace;
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
}
.status-active   { background: rgba(45,94,58,0.12); color: var(--forest); }
.status-emerging { background: rgba(176,142,68,0.15); color: var(--gold-mid); }
.status-scaling  { background: rgba(46,107,126,0.12); color: var(--sky); }

/* ─── METHODOLOGY EXPLAINER ─── */
.methodology-section {
  padding: 7rem 7rem;
  background: var(--cream);
  border-top: 4px solid var(--forest);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7rem;
  align-items: start;
}
.methodology-left {}
.methodology-left p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
}
.criteria-list {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.criteria-item {
  display: flex;
  gap: 1.2rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--border-light);
  align-items: flex-start;
  transition: padding-left 0.25s;
}
.criteria-item:first-child { border-top: 1px solid var(--border-light); }
.criteria-item:hover { padding-left: 0.4rem; }
.criteria-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.6rem;
  font-weight: 300;
  color: var(--border-mid);
  line-height: 1;
  flex-shrink: 0;
  width: 2rem;
}
.criteria-item h5 {
  font-family: 'Instrument Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.25rem;
}
.criteria-item p {
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
}

.methodology-right {}
.method-callout {
  background: var(--ink);
  color: var(--white);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.method-callout::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 120px; height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(45,94,58,0.3), transparent 70%);
}
.method-callout-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-bottom: 1rem;
}
.method-callout blockquote {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.5rem;
  font-weight: 300;
  font-style: italic;
  line-height: 1.45;
  color: var(--white);
  position: relative; z-index: 1;
}
.method-callout cite {
  display: block;
  margin-top: 1.2rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(200,222,206,0.5);
  font-style: normal;
}

.method-steps {
  background: var(--white);
  border: 1px solid var(--border-light);
  padding: 2rem;
}
.method-steps h4 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 1.5rem;
}
.method-step-row {
  display: flex;
  gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border-light);
  align-items: flex-start;
}
.method-step-row:last-child { border-bottom: none; }
.method-step-n {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--surface-tinted);
  border: 1px solid var(--border-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  color: var(--forest);
  flex-shrink: 0;
}
.method-step-text {
  font-size: 0.83rem;
  line-height: 1.6;
  color: var(--text-secondary);
}
.method-step-text strong { color: var(--ink); font-weight: 600; }

/* ─── CTA STRIP ─── */
.pathways-cta {
  padding: 6rem 7rem;
  background: linear-gradient(135deg, #2d5e3a 0%, #1e3024 55%, #1e3a32 100%);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.pathways-cta::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(200,222,206,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,222,206,0.04) 1px, transparent 1px);
  background-size: 56px 56px;
}
.pathways-cta-text { position: relative; z-index: 1; }
.pathways-cta-text h2 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.4rem;
  font-weight: 300;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 0.8rem;
}
.pathways-cta-text h2 em { font-style: italic; color: var(--dew); }
.pathways-cta-text p {
  font-size: 0.98rem;
  color: rgba(200,222,206,0.7);
  line-height: 1.7;
}
.pathways-cta-actions {
  position: relative; z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  align-items: flex-start;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1200px) {
  .page-hero { padding: 6rem 5rem 4.5rem; }
  .page-hero-inner { grid-template-columns: 1fr; gap: 3rem; }
  .hero-stat-row { grid-template-columns: repeat(3,1fr); }
  .filter-bar { padding: 0 4rem; }
  .pathway-explorer { padding: 4rem 4rem 6rem; }
  .pathway-panel-inner { grid-template-columns: 1fr 1fr; }
  .panel-section:last-of-type { grid-column: span 2; }
  .comparison-section, .methodology-section { padding: 5rem 4rem; }
  .pathways-cta { padding: 5rem 4rem; }
}
@media (max-width: 900px) {
  .page-hero { padding: 5rem 3rem 4rem; }
  .filter-bar { padding: 0 2rem; overflow-x: auto; }
  .pathway-explorer { padding: 3rem 2rem 5rem; }
  .pathway-panel-inner { grid-template-columns: 1fr; }
  .panel-section:last-of-type { grid-column: auto; }
  .pathway-header { grid-template-columns: 60px 1fr auto; }
  .pathway-meta-col { display: none; }
  .comparison-section, .methodology-section { padding: 4rem 2.5rem; }
  .methodology-section { grid-template-columns: 1fr; gap: 3rem; }
  .pathways-cta { grid-template-columns: 1fr; padding: 4rem 2.5rem; }
}