/* css/main.css — Milestone 5 application pass (matte/frost + editorial grain). NO layout changes. */

/* ======== Reset ======== */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* ======== Accessibility ======== */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-links { position: absolute; top: 0; left: 0; z-index: 9999; }

.skip-link {
  position: absolute;
  top: -100px; left: var(--space-4);
  padding: var(--space-3) var(--space-6);
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 2px solid var(--color-focus);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus { top: var(--space-4); outline: none; }

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* ======== V3 Layout ======== */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: 100vh;
}

/* ======== COST CTA ======== */
.cost-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-default);
  background: linear-gradient(180deg, var(--bg-glass-hover), var(--bg-glass));
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  font-size: var(--text-xs);
  font-weight: 600;
  transition: transform var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.cost-cta:hover { box-shadow: var(--glow-soft); }

.cost-cta:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

.mobile-nav__link--cta {
  border: 1px solid var(--border-default);
  background: var(--bg-glass);
  border-radius: var(--radius-md);
}

/* ======== Sidebar ======== */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--surface-saturation, 120%));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--surface-saturation, 120%));
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  z-index: var(--z-sticky);
  overflow-y: auto;
  transition: background-color var(--transition-theme);
}

.sidebar__header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
  text-align: center;
}

/* Logo - Larger and centered */
.site-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--text-primary);
}

.site-logo__img {
  width: clamp(100px, 8vw, 140px);
  height: auto;
  color: var(--logo-color);
  transition: color var(--transition-theme);
}

.site-logo__img svg,
.site-logo__img img {
  width: 100%;
  height: auto;
  display: block;
}

/* Navigation */
.sidebar__nav { flex: 1; padding: var(--space-4) 0; }
.nav-list { list-style: none; }

.nav-link {
  display: block;
  position: relative;
  padding: var(--space-3) var(--space-5);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-lg);
  margin: 2px var(--space-3);
  transition:
    color var(--transition-base),
    background-color var(--transition-base),
    box-shadow var(--transition-base);
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--nav-hover-bg);
  box-shadow: 0 0 0 1px var(--nav-hover-border);
}

.nav-link:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.nav-link--active {
  color: var(--color-link);
  background: var(--nav-active-bg);
  box-shadow: 0 0 0 1px var(--nav-active-border);
}

.nav-link--active::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 50%;
  width: 2px;
  height: 60%;
  transform: translateY(-50%);
  border-radius: 999px;
  background: linear-gradient(180deg, transparent, var(--color-link), transparent);
  box-shadow: none; /* Milestone 5: reduce neon-like glow */
}

/* Sidebar Subsections */
.nav-sub {
  padding-left: var(--space-4);
  list-style: none;
}
.nav-sub .nav-link {
  font-size: 0.9em;
  padding: var(--space-2) var(--space-5);
}
.nav-label {
  display: block;
  padding: var(--space-2) var(--space-5);
  color: var(--text-muted);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-top: var(--space-2);
}

/* WG Leader Header */
.wg-leader-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  display: block;
}

.sidebar__footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-subtle);
}

.sidebar__external-link {
  display: block;
  padding: var(--space-2) 0;
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.sidebar__external-link:hover { color: var(--color-link); }

/* ======== Sidebar Controls ======== */
.sidebar__controls {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.control-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--text-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.control-btn:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}

.control-btn__icon { font-size: 1rem; }

/* ======== Mobile Header ======== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--surface-saturation, 120%));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--surface-saturation, 120%));
  border-bottom: 1px solid var(--glass-border);
  padding: 0 var(--space-4);
  align-items: center;
  justify-content: space-between;
  z-index: var(--z-sticky);
}

.mobile-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
}

.mobile-logo__img {
  height: 40px;
  width: auto;
}

.mobile-menu-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-glass);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mobile-menu-btn:hover { background: var(--bg-glass-hover); }

.mobile-menu-btn__icon {
  font-size: 0.75em;
  transition: transform var(--transition-fast);
}

.mobile-menu-btn[aria-expanded="true"] .mobile-menu-btn__icon {
  transform: rotate(180deg);
}

.mobile-nav {
  position: fixed;
  top: var(--header-height);
  left: 0; right: 0;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--surface-saturation, 120%));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--surface-saturation, 120%));
  border-bottom: 1px solid var(--glass-border);
  z-index: calc(var(--z-sticky) - 1);
  max-height: calc(100vh - var(--header-height));
  overflow-y: auto;
}

.mobile-nav[hidden] { display: none; }
.mobile-nav__list { list-style: none; padding: var(--space-4); }

.mobile-nav__link {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.mobile-nav__link:hover { background: var(--bg-glass-hover); }

/* ======== Main Content ======== */
.main-content { grid-column: 2; min-width: 0; }

@media (max-width: 1024px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .mobile-header { display: flex; }
  .main-content { grid-column: 1; margin-top: var(--header-height); }
}

/* ======== Typography ======== */
h1, h2, h3, h4 {
  line-height: var(--leading-tight);
  color: var(--text-primary);
  letter-spacing: -0.025em;
}

h1 { font-size: var(--text-5xl); font-weight: 700; }
h2 { font-size: var(--text-3xl); font-weight: 600; margin-bottom: var(--space-8); }
h3 { font-size: var(--text-xl); font-weight: 600; margin-bottom: var(--space-4); }

p { margin-bottom: var(--space-4); }
p:last-child { margin-bottom: 0; }

a { color: var(--color-link); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-link-hover); }

/* ======== Continuous Background Canvas ======== */
.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background: var(--bg-page);
  isolation: isolate;
}

.bg-layer {
  position: absolute;
  inset: -1.5%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  will-change: opacity, filter, transform;
  filter: var(--bg-filter);
  transform: translateZ(0) scale(1.02);
  backface-visibility: hidden;
  transition: opacity 220ms ease, filter var(--transition-theme);
}

.bg-canvas__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: var(--bg-overlay);
  opacity: 0.98;
  will-change: opacity, background;
  transition: background var(--transition-theme), opacity 180ms ease;
  transform: translateZ(0);
}

/* Blend edges so transitions never produce hard seams */
.bg-canvas::before,
.bg-canvas::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 22vh;
  z-index: 3;
  pointer-events: none;
  filter: blur(10px);
  transform: translateZ(0);
}

.bg-canvas::before {
  top: -6vh;
  background: linear-gradient(180deg, var(--bg-page) 0%, transparent 100%);
}

.bg-canvas::after {
  bottom: -6vh;
  background: linear-gradient(0deg, var(--bg-page) 0%, transparent 100%);
}

/* Milestone 5: Editorial grain + microscopy slide noise (CSS-only) */
.bg-canvas__overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: var(--bg-noise-opacity);
  background-image:
    radial-gradient(circle at 18% 22%, rgba(255,255,255,0.06), rgba(255,255,255,0) 42%),
    radial-gradient(circle at 72% 64%, rgba(0,0,0,0.05), rgba(0,0,0,0) 46%),
    repeating-radial-gradient(circle at 10% 20%, rgba(255,255,255,0.018) 0 1px, rgba(0,0,0,0) 1px 3px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.010) 0px, rgba(255,255,255,0.010) 1px, rgba(0,0,0,0) 2px, rgba(0,0,0,0) 5px),
    repeating-linear-gradient(90deg, rgba(0,0,0,0.014) 0px, rgba(0,0,0,0.014) 1px, rgba(0,0,0,0) 2px, rgba(0,0,0,0) 6px);
  mix-blend-mode: overlay;
}

.reduce-motion .bg-layer,
.reduce-motion .bg-canvas__overlay {
  transition: none !important;
}

/* ======== Sections ======== */
.section {
  position: relative;
  padding: var(--space-20) var(--space-8);
  overflow: clip;
  background: transparent;
  z-index: 1;
}

/* Legacy per-section bg nodes are no longer used. */
.section__bg { display: none !important; }

.section__inner {
  position: relative;
  max-width: var(--content-max);
  margin: 0 auto;
  z-index: 1;
}

/* ======== Reading Surfaces (matte/frost) ======== */
.content-surface {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: clamp(18px, 2.5vw, 28px);
  border-radius: var(--radius-2xl);
  background: var(--content-surface-bg);
  border: 1px solid var(--content-surface-border);
  box-shadow: var(--content-surface-shadow);
  backdrop-filter: blur(var(--content-surface-blur)) saturate(var(--surface-saturation, 120%));
  -webkit-backdrop-filter: blur(var(--content-surface-blur)) saturate(var(--surface-saturation, 120%));
}

.content-surface--narrow { max-width: 860px; }
.content-surface--wide { max-width: 1040px; }
.content-surface--hero { max-width: 920px; padding: clamp(22px, 3vw, 34px); }

.content-surface::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: var(--content-surface-sheen);
  opacity: var(--content-surface-sheen-opacity);
  mix-blend-mode: var(--content-surface-sheen-blend);
}

.content-surface::before{
  content:'';
  position:absolute;
  inset:0;
  border-radius:inherit;
  pointer-events:none;
  opacity: var(--surface-grain-opacity, 0.045);
  background-image:
    radial-gradient(circle at 20% 30%, rgba(0,0,0,0.06), rgba(0,0,0,0) 45%),
    repeating-radial-gradient(circle at 60% 40%, rgba(255,255,255,0.020) 0 1px, rgba(0,0,0,0) 1px 3px);
  mix-blend-mode: overlay;
}

.content-surface > * { position: relative; z-index: 1; }

/* ======== Section scrim behind content (readability) ======== */
.section { isolation: isolate; }
.section::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: var(--section-scrim);
}
.section__inner { position: relative; z-index: 1; }

/* ======== Card sheen for glass elements (matte diffusion) ======== */
.glass-card,
.wg-card,
.leader-card,
.grant-card,
.join-card,
.map-section {
  position: relative;
  overflow: hidden;
}

.glass-card::before,
.wg-card::before,
.leader-card::before,
.grant-card::before,
.join-card::before,
.map-section::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: var(--card-sheen);
  opacity: var(--card-sheen-opacity);
  mix-blend-mode: soft-light;
}

.glass-card::after,
.wg-card::after,
.leader-card::after,
.grant-card::after,
.join-card::after,
.map-section::after{
  content:'';
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity: calc(var(--surface-grain-opacity, 0.045) * 0.85);
  background-image:
    repeating-linear-gradient(0deg, rgba(255,255,255,0.010) 0px, rgba(255,255,255,0.010) 1px, rgba(0,0,0,0) 2px, rgba(0,0,0,0) 6px),
    repeating-radial-gradient(circle at 30% 30%, rgba(0,0,0,0.03) 0 1px, rgba(0,0,0,0) 1px 4px);
  mix-blend-mode: overlay;
}

.glass-card > *,
.wg-card > *,
.leader-card > *,
.grant-card > *,
.join-card > *,
.map-section > * {
  position: relative;
  z-index: 1;
}

.section--hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
}

/* ======== Hero ======== */
.hero__kicker {
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}

.hero__title {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
  max-width: 800px;
  margin-bottom: var(--space-6);
  text-shadow: var(--hero-title-shadow);
}

.hero__lead {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: var(--space-8);
  line-height: var(--leading-relaxed);
}

.hero__cta { display: flex; flex-wrap: wrap; gap: var(--space-4); }

/* ======== Buttons ======== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

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

.btn--primary:hover {
  background: var(--color-blue-600);
  box-shadow: var(--glow-soft);
}

.btn--secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border-color: var(--border-default);
  backdrop-filter: blur(8px) saturate(var(--surface-saturation, 120%));
}

.btn--secondary:hover {
  background: var(--bg-glass-hover);
  border-color: var(--color-link);
  box-shadow: var(--glow-soft);
}

.btn--large { padding: var(--space-4) var(--space-8); font-size: var(--text-lg); }

/* ======== Cards ======== */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--surface-saturation, 120%));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--content-surface-shadow);
  transition: background-color var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: var(--glow-soft);
}

/* === Home Registrations Grid === */
.registrations-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--border-default);
}

@media (min-width: 700px) {
  .registrations-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.feature-alert {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  transition: background-color 0.2s;
}

.feature-alert:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--color-accent);
}


/* === Editorial Rail Layout === */
.rail-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin: var(--space-4) 0;
}

@media (min-width: 800px) {
  .rail-block {
    grid-template-columns: 200px 1fr;
    gap: var(--space-8);
  }
}

.rail-block__sidebar {
  padding-top: var(--space-1);
}

.rail-block__label {
  display: block;
  font-family: monospace;
  font-size: var(--text-xs);
  color: var(--color-accent);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.rail-block__title {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin: 0;
  color: var(--text-primary);
}

.rail-block__content p {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 65ch;
}

.rail-block__content p:first-child {
  color: var(--text-primary);
}

.drop-cap::first-letter {
  float: left;
  font-size: 3.5em;
  line-height: 0.8;
  margin-right: 0.1em;
  font-weight: 700;
  color: var(--color-accent);
}

.rail-divider {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--border-subtle), transparent);
  margin: var(--space-8) 0;
}

/* Ledger Strips (Mission/Scope/Instruments) */
.ledger-group {
  margin-top: var(--space-8);
  border-top: 1px solid var(--border-subtle);
}

.ledger-strip {
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color var(--transition-fast);
}

.ledger-strip:hover {
  background: rgba(255,255,255,0.02);
}

.ledger-strip__summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-4) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ledger-strip__summary::-webkit-details-marker { display: none; }

.ledger-strip__title {
  font-family: monospace;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  margin: 0;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.ledger-strip:hover .ledger-strip__title {
  color: var(--text-primary);
}

.ledger-strip__icon {
  position: relative;
  width: 12px; height: 12px;
}

.ledger-strip__icon::before,
.ledger-strip__icon::after {
  content: '';
  position: absolute;
  background: var(--color-link);
  transition: transform 0.2s;
}

/* Plus icon construction */
.ledger-strip__icon::before { top: 5px; left: 0; width: 12px; height: 2px; }
.ledger-strip__icon::after { top: 0; left: 5px; width: 2px; height: 12px; }

details[open] .ledger-strip__icon::after { transform: rotate(90deg); } /* Minus */

.ledger-strip__content {
  padding-bottom: var(--space-6);
  color: var(--text-secondary);
  max-width: 60ch;
  animation: slideDown 0.2s ease-out;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === Trinity Nexus Layout (WG) === */
.trinity-system {
  margin-top: var(--space-8);
}

/* The Nexus Selector */
.trinity-nexus {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .trinity-nexus {
    flex-direction: row;
    justify-content: center;
    gap: 0; /* Connected */
  }
}

.trinity-node {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-6);
  background: var(--bg-glass);
  border: 1px solid var(--border-default);
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.3s;
  z-index: 2;
  min-width: 220px;
}

.trinity-node:hover {
  background: var(--bg-glass-hover);
  border-color: var(--text-muted);
}

.trinity-node.active {
  background: var(--bg-surface-elevated);
  box-shadow: 0 0 0 1px var(--color-accent), var(--glow-soft);
  border-color: var(--color-accent);
}

/* Marker Circle (1, 2, 3) */
.trinity-node__marker {
  display: flex;
  align-items: center;
  justify-content: center;
  /* Increased size to fit "WG1" */
  width: 44px; 
  height: 44px;
  min-width: 44px; /* Prevents shrinking */
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.85rem;
  background: var(--bg-page);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all 0.3s;
}

/* Theme-specific accent colors per WG */
.trinity-node--wg1.active .trinity-node__marker { background: var(--color-wg1); color: #fff; border-color: transparent; }
.trinity-node--wg2.active .trinity-node__marker { background: var(--color-wg2); color: #fff; border-color: transparent; }
.trinity-node--wg3.active .trinity-node__marker { background: var(--color-wg3); color: #fff; border-color: transparent; }

.trinity-node__label {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.trinity-node.active .trinity-node__label { color: var(--text-primary); }

/* The Connector Line */
.trinity-connector {
  width: 2px;
  height: 20px;
  background: var(--border-default);
  transition: background 0.3s;
}

@media (min-width: 768px) {
  .trinity-connector {
    width: 60px;
    height: 1px;
  }
}

.trinity-node.active + .trinity-connector,
.trinity-connector:has(+ .trinity-node.active) {
  background: var(--color-accent); /* Lit up circuit */
}

/* The Viewport */
.trinity-viewport {
  position: relative;
  min-height: 400px;
}

.trinity-panel {
  display: none;
  animation: fadeIn 0.4s ease;
}

.trinity-panel.active { display: block; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }

.trinity-panel__content {
  max-width: 75ch;
  margin: 0 auto;
}

.trinity-panel__lead {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
}

/* Premium List */
.trinity-details {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  background: rgba(255,255,255,0.02);
}

.trinity-details__summary {
  font-weight: 600;
  color: var(--color-link);
  cursor: pointer;
  margin-bottom: var(--space-2);
}

.premium-list {
  list-style: none;
  counter-reset: p-list;
  padding: 0;
}

.premium-list li {
  position: relative;
  padding-left: 2rem;
  margin-bottom: var(--space-3);
  color: var(--text-secondary);
  line-height: 1.6;
}

.premium-list li::before {
  counter-increment: p-list;
  content: counter(p-list);
  position: absolute;
  left: 0; top: 2px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  border: 1px solid var(--border-subtle);
  width: 1.4rem; height: 1.4rem;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
}

.trinity-panel__footer {
  margin-top: var(--space-8);
  display: flex;
  justify-content: center;
}

/* Fix for universe button reused class */
.wg-card__toggle { width: auto; }

/* ======== Lab universe templates (used inside overlay) ======== */
.wg-universe { --wg1-intensity: 0.65; --wg3-stress: 0.4; width: 100%; }

.wg-universe__shell {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.4fr);
  gap: var(--space-6);
  align-items: center;
}

@media (max-width: 900px) { .wg-universe__shell { grid-template-columns: minmax(0, 1fr); } }

.wg-universe__visual {
  position: relative;
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* universal canvas host (WG1/WG3) */
.wg-universe__canvas {
  width: min(520px, 82vw);
  height: min(520px, 82vw);
  max-width: 520px;
  max-height: 520px;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.42);
  box-shadow: var(--surface-shadow);
  background: rgba(2,6,23,0.92);
}
.wg-universe__canvas > canvas { display: block; width: 100%; height: 100%; }

/* chemistry scope host (WG2) */
.wg-chemistry-scope {
  width: min(520px, 82vw);
  height: min(520px, 82vw);
  max-width: 520px;
  max-height: 520px;
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.42);
  box-shadow: var(--surface-shadow);
  background: rgba(2,6,23,0.92);
}

.wg-chemistry__zoom-wrap { position: relative; width: 100%; height: 100%; }

.wg-chemistry__zoom-bg {
  position: absolute;
  inset: -8%;
  background-size: cover;
  background-position: center;
  filter: blur(0.6px) saturate(1.05) contrast(1.05);
  transform: scale(1.05);
  will-change: transform, filter;
}

.wg-chemistry__layer { position: absolute; inset: 0; opacity: 0; }
.wg-chemistry__canvas { width: 100%; height: 100%; display: block; }

.wg-chemistry__vignette {
  position: absolute;
  inset: 0;
  box-shadow: inset 0 0 70px rgba(0,0,0,0.75);
  pointer-events: none;
}

/* Universe panel: map to matte surface tokens */
.wg-universe__panel {
  background: var(--content-surface-bg);
  border-radius: var(--radius-xl);
  border: 1px solid var(--content-surface-border);
  padding: var(--space-5);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.50);
  backdrop-filter: blur(var(--content-surface-blur)) saturate(var(--surface-saturation, 120%));
  -webkit-backdrop-filter: blur(var(--content-surface-blur)) saturate(var(--surface-saturation, 120%));
}

.wg-universe__eyebrow {
  font-size: var(--text-xl); /* Slightly larger */
  font-weight: 700; /* Bold */
  text-transform: uppercase;
  color: var(--color-accent); /* Color pop */
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}


.wg-universe__title { font-size: var(--text-2xl); letter-spacing: -0.04em; margin-bottom: var(--space-3); }
.wg-universe__copy { font-size: var(--text-sm); color: var(--text-secondary); margin-bottom: var(--space-4); }

.wg-universe__control { display: grid; gap: var(--space-2); }

.wg-universe__control-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-muted);
}

.wg-universe__slider { width: 100%; }
.wg-universe__slider::-webkit-slider-thumb { cursor: pointer; }
.wg-universe__slider::-moz-range-thumb { cursor: pointer; }

.wg-universe__range-row { display: flex; align-items: center; gap: var(--space-3); }

.wg-universe__range-value {
  font-size: var(--text-xs);
  color: var(--text-muted);
  min-width: 3ch;
  text-align: right;
}

.wg-universe__control-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.wg-universe__check { display: inline-flex; align-items: center; gap: 0.55rem; font-size: var(--text-xs); color: var(--text-secondary); }
.wg-universe__check input { accent-color: var(--color-link); }

/* ======== WG Lab Universes – cinematic overlay (matte) ======== */
.wg-universe-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 220ms ease;
}

.wg-universe-overlay.is-visible { pointer-events: auto; opacity: 1; }

.wg-universe-overlay__backdrop {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 12% 0%, rgba(70,170,170,0.22), transparent 58%),
    radial-gradient(circle at 88% 100%, rgba(170,140,235,0.18), transparent 62%),
    radial-gradient(circle at 55% 85%, rgba(220,170,90,0.10), transparent 62%),
    rgba(2, 6, 23, 0.90);
  backdrop-filter: blur(26px) saturate(145%);
  -webkit-backdrop-filter: blur(26px) saturate(145%);
}

[data-theme="light"] .wg-universe-overlay__backdrop {
  background:
    radial-gradient(circle at 12% 0%, rgba(70,170,170,0.18), transparent 58%),
    radial-gradient(circle at 88% 100%, rgba(170,140,235,0.14), transparent 62%),
    radial-gradient(circle at 55% 85%, rgba(220,170,90,0.10), transparent 62%),
    rgba(246,245,240,0.92);
  backdrop-filter: blur(26px) saturate(125%);
  -webkit-backdrop-filter: blur(26px) saturate(125%);
}

.wg-universe-overlay__frame {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  width: min(100% - 1.5rem, 1120px);
  max-height: min(92vh, 850px);
  border-radius: var(--radius-2xl);
  padding: clamp(var(--space-4), 3vw, var(--space-8));
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

.wg-universe-overlay__frame::before{
  content:'';
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity: calc(var(--surface-grain-opacity, 0.045) * 0.9);
  background-image:
    repeating-linear-gradient(0deg, rgba(255,255,255,0.010) 0px, rgba(255,255,255,0.010) 1px, rgba(0,0,0,0) 2px, rgba(0,0,0,0) 6px),
    repeating-radial-gradient(circle at 40% 40%, rgba(0,0,0,0.03) 0 1px, rgba(0,0,0,0) 1px 4px);
  mix-blend-mode: overlay;
}

.wg-universe-overlay__close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-glass);
  color: var(--text-primary);
  font-size: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.wg-universe-overlay__close:hover {
  background: var(--bg-glass-hover);
  border-color: var(--color-link);
  box-shadow: var(--glow-soft);
  transform: translateY(-1px);
}

/* ======== Leadership ======== */
.leadership-subsection { margin-bottom: var(--space-12); }

.leader-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

.leader-card {
  background: var(--glass-bg);
  backdrop-filter: blur(8px) saturate(var(--surface-saturation, 120%));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  text-align: center;
  transition: all var(--transition-fast);
}

.leader-card:hover { border-color: rgba(255, 255, 255, 0.15); }

.leader-card--leadership { border-left: 3px solid var(--color-leadership); }
.leader-card--wg1 { border-left: 3px solid var(--color-wg1); }
.leader-card--wg2 { border-left: 3px solid var(--color-wg2); }
.leader-card--wg3 { border-left: 3px solid var(--color-wg3); }

.leader-card__name { font-weight: 600; margin-bottom: var(--space-1); }
.leader-card__role { font-size: var(--text-sm); color: var(--color-link); margin-bottom: var(--space-1); }
.leader-card__country { font-size: var(--text-xs); color: var(--text-muted); }

/* ======== Grants ======== */
.grant-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-4);
}

.grant-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--surface-saturation, 120%));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition-fast);
}

.grant-card:hover { border-color: rgba(255, 255, 255, 0.15); }
.grant-card h3 { font-size: var(--text-lg); margin-bottom: var(--space-2); }
.grant-card p { font-size: var(--text-sm); color: var(--text-secondary); }

.status-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-3);
}

.status-badge--open { background: rgba(34, 197, 94, 0.15); color: var(--color-success); }
.status-badge--soon { background: rgba(234, 179, 8, 0.15); color: var(--color-warning); }
.status-badge--closed { background: rgba(243, 167, 209, 0.479); color: var(--color-error); }
/* ======== Steps ======== */
.steps-list {
  list-style: none;
  counter-reset: step;
  margin-bottom: var(--space-8);
}

.steps-list li {
  counter-increment: step;
  position: relative;
  padding-left: 3.5rem;
  margin-bottom: var(--space-6);
}

.steps-list li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  width: 2.5rem; height: 2.5rem;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  box-shadow: var(--glow-soft);
}

.steps-list strong { display: block; margin-bottom: var(--space-1); }
.steps-list p { font-size: var(--text-sm); color: var(--text-secondary); margin: 0; }

/* ======== Footer ======== */
.site-footer {
  position: relative; /* Ensure it accepts z-index */
  z-index: 1;         /* Lift it above the background canvas */
  padding: var(--space-12) var(--space-6);
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  text-align: center;
  transition: background-color var(--transition-theme);
}

/* Fix desktop layout so footer respects sidebar width */
@media (min-width: 1025px) {
  .site-footer {
    margin-left: var(--sidebar-width);
  }
}

.site-footer p { font-size: var(--text-sm); color: var(--text-secondary); margin-bottom: var(--space-2); }
.site-footer__copyright { font-size: var(--text-xs); color: var(--text-muted); }
.site-footer__logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-6); /* Space between the two logos */
  margin-bottom: var(--space-4); /* Space between logos and the text below */
}

.site-footer__logo {
  height: 60px; /* Restricts the height to 60px as requested */
  width: auto;  /* Maintains the correct aspect ratio */
}
/* ======== Accessibility Panel ======== */
.a11y-panel {
  position: fixed;
  top: 0; right: 0;
  width: 320px;
  max-width: 90vw;
  height: 100vh;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--surface-saturation, 120%));
  border-left: 1px solid var(--glass-border);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  z-index: var(--z-modal);
  overflow-y: auto;
}

.a11y-panel[aria-hidden="false"] { transform: translateX(0); }

.a11y-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
}

.a11y-panel__title { font-size: var(--text-lg); font-weight: 600; }

.a11y-panel__close {
  width: 36px; height: 36px;
  background: var(--bg-glass);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--text-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.a11y-panel__close:hover { background: var(--bg-glass-hover); }

.a11y-panel__content { padding: var(--space-6); }

.a11y-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.a11y-option:last-child { border-bottom: none; }
.a11y-option__label { font-size: var(--text-sm); font-weight: 500; }
.a11y-option__desc { font-size: var(--text-xs); color: var(--text-muted); margin-top: var(--space-1); }

/* Toggle Switch */
.toggle-switch { position: relative; width: 48px; height: 26px; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }

.toggle-switch__slider {
  position: absolute;
  inset: 0;
  background: var(--bg-glass);
  border: 1px solid var(--border-default);
  border-radius: 13px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.toggle-switch__slider::before {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 20px; height: 20px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.toggle-switch input:checked + .toggle-switch__slider {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.toggle-switch input:checked + .toggle-switch__slider::before {
  transform: translateX(22px);
  background: var(--color-white);
}

.toggle-switch input:focus-visible + .toggle-switch__slider {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* Overlay */
.a11y-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: calc(var(--z-modal) - 1);
}

.a11y-overlay--visible { opacity: 1; visibility: visible; }

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

/* ======== Utility ======== */
.text-right { text-align: right; }
.text-center { text-align: center; }

@media (max-width: 960px) {
  .wg-universe__shell { grid-template-columns: 1fr; }
  .wg-universe__visual { order: -1; }

  .wg-universe__canvas,
  .wg-chemistry-scope {
    width: min(420px, 100%);
    height: min(420px, 100%);
  }
}

@media (max-width: 640px) {
  .section {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .wg-overlay__frame {
    max-height: 100vh;
    padding: var(--space-4);
  }

  .wg-universe__panel { padding: var(--space-4); }
}

/* ======== Forms ======== */
.form-grid {
  display: grid;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

@media (min-width: 640px) {
  .form-grid--2-col { grid-template-columns: 1fr 1fr; }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-left: var(--space-1);
}

.input-field {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-glass); /* Matches sidebar/cards */
  backdrop-filter: blur(var(--glass-blur)); 
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg); /* Rounded corners */
  color: var(--text-primary);
  font-family: inherit;
  font-size: var(--text-base);
  transition: all var(--transition-fast);
}

.input-field:hover {
  background: var(--bg-glass-hover);
  border-color: var(--text-muted);
}

.input-field:focus {
  outline: none;
  border-color: var(--color-link);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15); /* Soft glow */
  background: var(--bg-surface);
}

/* Fix for Select dropdowns */
select.input-field {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='gray' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* Radio/Checkbox groups */
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.radio-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  cursor: pointer;
}

.radio-label input[type="radio"] {
  accent-color: var(--color-accent);
  width: 1.1em;
  height: 1.1em;
}