/* ============================================================
   OpenHealth5G — Refined Clinical Tech Design System
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Ubuntu:wght@300;400;500;700&family=Ubuntu+Condensed:wght@400;700&display=swap');

:root {
  /* Brand palette */
  --color-primary-dark: #004182;
  --color-primary-light: #00B8E6;
  --color-bg-soft: #F4F7F9;
  --color-bg-white: #FFFFFF;
  --color-bg: var(--color-bg-soft);
  --color-border: rgba(0,65,130,0.12);
  --color-text-body: #333333;
  --color-text-muted: #6B7B8D;
  --color-text-dark: #333333;
  --color-heading: var(--font-family);
  --color-mono: 'Ubuntu Mono', 'Courier New', monospace;
  --color-primary: var(--color-primary-light);

  /* Container */
  --container-max: clamp(100%, 100vw - 4rem, 1200px);

  /* Logo-gradient (dark → light blue) */
  --gradient-primary: linear-gradient(90deg, #004182, #00B8E6);
  --gradient-subtle: linear-gradient(180deg, #004182 0%, #00B8E6 100%);

  /* Typography */
  --font-family: 'Ubuntu', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-weight-heading: 700;
  --font-weight-subheading: 500;
  --font-weight-body: 400;
  --font-weight-condensed: 400;
  --color-fw-bold: 700;
  --color-fw-semibold: 600;
  --color-fw-medium: 500;
  /* Font-size aliases */
  --color-fs-h1: clamp(2rem, 5vw, 3.5rem);
  --color-fs-h2: clamp(1.5rem, 3vw, 2rem);
  --color-fs-h3: clamp(1.2rem, 2.5vw, 1.5rem);
  --color-fs-h4: clamp(1rem, 2vw, 1.3rem);
  --color-fs-base: 1rem;
  --color-fs-small: 0.875rem;
  --color-fs-caption: 0.75rem;

  /* Spacing */
  --space-section: clamp(3rem, 8vw, 6rem);
  --space-gap: 1.5rem;
  --space-gutter: clamp(1rem, 4vw, 4rem);

  /* Grid */
  --grid-max-width: clamp(100%, 100vw - 4rem, 1600px);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  position: relative;
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  font-weight: var(--font-weight-body);
  color: var(--color-text-body);
  background-color: var(--color-bg-soft);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-primary-dark); }

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg-white);
  border-bottom: 1px solid rgba(0,65,130,0.08);
}
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--grid-max-width);
  margin: 0 auto;
  padding: 0 var(--space-gutter);
  min-height: 80px;
}
.logo {
  display: flex;
  align-items: center;
  padding: 0.5em;
  margin: 0;
}
.logo img {
  max-height: 50px;
  width: auto;
}
.site-nav { display: flex; gap: 2rem; }
.site-nav a {
  font-family: var(--font-family);
  font-weight: var(--font-weight-subheading);
  font-size: 0.95rem;
  color: var(--color-text-body);
  letter-spacing: 0.02em;
}
.site-nav a:hover { color: var(--color-primary-dark); }

/* ---- Main Nav (used by partial header) ---- */
.main-nav {
  flex: 1;
  margin-left: auto;
  display: flex;
  justify-content: flex-end;
}
.nav-list {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-family);
  font-weight: var(--font-weight-subheading);
  font-size: 0.95rem;
  color: var(--color-text-body);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--color-primary-dark);
}
.nav-link.active,
.nav-link[aria-current="page"] {
  color: var(--color-primary-dark);
  font-weight: 700;
  border-bottom: 2px solid var(--color-primary-light);
}

/* ---- Dropdown Menu ---- */
.has-dropdown {
  position: relative;
}
.nav-dropdown-trigger {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-family);
  font-weight: var(--font-weight-subheading);
  font-size: 0.95rem;
  color: var(--color-text-body);
  letter-spacing: 0.02em;
  white-space: nowrap;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem 0;
}
.nav-dropdown-trigger:hover {
  color: var(--color-primary-dark);
}
.dropdown-arrow {
  display: inline-block;
  width: 6px;
  height: 4px;
  background: var(--color-text-body);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  transition: transform 0.2s;
}
.has-dropdown:hover .dropdown-arrow,
.has-dropdown.active .dropdown-arrow {
  transform: rotate(180deg);
}
.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-top: 2px solid var(--color-primary-light);
  border-radius: 0 0 4px 4px;
  box-shadow: 0 4px 12px rgba(0,65,130,0.1);
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: 160px;
  z-index: 101;
}
.has-dropdown:hover .dropdown-menu,
.has-dropdown.active .dropdown-menu {
  display: block;
}
.dropdown-menu li {
  border-bottom: 1px solid var(--color-border);
  margin: 0;
}
.dropdown-menu li:last-child {
  border-bottom: none;
}
.dropdown-link {
  display: block;
  width: 100%;
  padding: 0.6rem 1rem;
  font-family: var(--font-family);
  font-weight: var(--font-weight-subheading);
  font-size: 0.95rem;
  color: var(--color-text-body);
  letter-spacing: 0.02em;
  white-space: nowrap;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
}
.dropdown-link:hover {
  color: var(--color-primary-dark);
  background: var(--color-bg-soft);
}
.dropdown-link.active,
.dropdown-link[aria-current="page"] {
  color: var(--color-primary-dark);
  font-weight: 700;
  border-left: 3px solid var(--color-primary-light);
  background: var(--color-bg-white);
}

/* ---- Nav Toggle (Hamburger) Button ---- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  min-width: 44px;
  min-height: 44px;
  align-self: flex-end;
}
.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-body);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
  transform-origin: center;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---- Main ---- */
.site-main { position: relative; z-index: 1; }

/* ---- Hero ---- */
.hero {
  position: relative;
  background: var(--color-bg-white);
  padding: var(--space-section) 0;
  border-bottom: 1px solid rgba(0,65,130,0.06);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-subtle);
  opacity: 0.08;
  pointer-events: none;
  z-index: 0;
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-gutter);
}
.hero-logo {
  max-width: 600px;
  width: 100%;
  height: auto;
  margin-bottom: 2.5rem;
}
.hero-title {
  font-family: var(--font-family);
  font-weight: var(--font-weight-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: var(--color-primary-dark);
  margin: 0 0 1rem;
  line-height: 1.15;
}
.hero-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  border-radius: 2px;
  background: var(--gradient-primary);
  margin: 1.25rem auto 0;
}
.hero-subtitle {
  font-family: var(--font-family);
  font-weight: var(--font-weight-subheading);
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--color-primary-light);
  margin: 0 0 2.5rem;
}

/* ---- CTA ---- */
.cta-primary {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: var(--gradient-primary);
  color: var(--color-bg-white);
  font-family: var(--font-family);
  font-weight: var(--font-weight-heading);
  font-size: 1rem;
  text-decoration: none;
  border-radius: 4px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.cta-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,65,130,0.25);
  color: var(--color-bg-white);
}

/* ---- Section utilities ---- */
.section-dark {
  background-color: var(--color-primary-dark);
  color: var(--color-bg-soft);
  padding: var(--space-section) 0;
  text-align: justify;
}
.section-dark h2 { color: var(--color-primary-light); }
.section-dark a { color: var(--color-primary-light); }

.section-white {
  background-color: var(--color-bg-white);
  padding: var(--space-section) 0;
}

.claimed-section { padding: var(--space-section) 0; }

/* ---- Section title ---- */
.section-title {
  font-family: var(--font-family);
  font-weight: var(--font-weight-heading);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  color: var(--color-primary-dark);
  text-align: center;
  margin: 0 0 var(--space-section);
}
.section-dark .section-title { color: var(--color-primary-light); }

/* ---- Grid container ---- */
.grid-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-gap);
  max-width: var(--grid-max-width);
  margin: 0 auto;
  padding: 0 var(--space-gutter);
}

/* ---- Container (used by single pages) ---- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-gutter);
}

/* ---- Cards — clinical chart aesthetic ---- */
.card {
  background: var(--color-bg-white);
  padding: 2rem;
  border-radius: 2px;
  border-left: 4px solid var(--color-primary-light);
  box-shadow: 0 2px 12px rgba(0,65,130,0.06);
  transition: box-shadow 0.2s;
}
.card:hover { box-shadow: 0 6px 24px rgba(0,65,130,0.12); }
.card img {
  width: 100%;
  max-width: 500px;
  height: auto;
  margin: 0 auto 1.5rem;
  display: block;
}
.card h3 {
  font-family: var(--font-family);
  font-weight: var(--font-weight-heading);
  font-size: 1.3rem;
  color: var(--color-primary-dark);
  margin: 0 0 0.75rem;
}
.card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ---- Dark-zone logo safe zone ---- */
.dark-logo-safe-zone {
  max-width: 600px;
  margin: 0 auto 3rem;
  padding: 1.5em;
}
.dark-logo-safe-zone img {
  width: 100%;
  height: auto;
}

/* ---- Partner row ---- */
.partner-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
  max-width: var(--grid-max-width);
  margin: 0 auto;
  padding: 0 var(--space-gutter);
}
.partner-row img {
  max-height: 60px;
  max-width: 180px;
  object-fit: contain;
  opacity: 0.7;
  transition: opacity 0.2s;
}
.partner-row img:hover { opacity: 1; }

/* ---- Section divider line ---- */
.divider-line {
  width: 60px;
  height: 3px;
  background: var(--gradient-primary);
  margin: 0 auto 2rem;
  border-radius: 2px;
}

/* ---- Footer ---- */
.site-footer {
  background: var(--color-primary-dark);
  color: var(--color-bg-soft);
  padding: 3rem 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--grid-max-width);
  margin: 0 auto;
  padding: 0 var(--space-gutter);
  gap: 2rem;
}
.footer-inner p {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(244,247,249,0.7);
}
.footer-inner a { color: var(--color-primary-light); }
.footer-partners {
  display: flex;
  gap: 2rem;
  align-items: center;
}
.footer-partners img {
  max-height: 60px;
  max-width: 120px;
  opacity: 0.5;
  filter: brightness(0) invert(0.7);
}

/* ---- Active nav link ---- */
.site-nav a.active {
  color: var(--color-primary-dark);
  font-weight: 700;
  border-bottom: 2px solid var(--color-primary-light);
}

/* ---- Page content container ---- */
.page-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-gutter);
}

.page-content h2 {
  color: var(--color-primary-dark);
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.page-content h3 {
  color: var(--color-primary-dark);
  font-size: 1.3rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.page-content p {
  margin-bottom: 1rem;
  text-align: justify;
}

.page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.page-content th,
.page-content td {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(0,65,130,0.1);
}

.page-content th {
  color: var(--color-primary-dark);
  font-weight: 700;
  background: rgba(0,65,130,0.03);
}

.page-content hr {
  border: none;
  border-top: 1px solid rgba(0,65,130,0.12);
  margin: 3rem auto;
  max-width: 600px;
}

.page-content img {
  margin: 2rem auto;
  display: block;
  max-width: 100%;
}

/* ---- Tablet Nav Density (1100px) ---- */
@media (max-width: 1100px) {
  .nav-list { gap: 1.25rem; }
  .nav-link { font-size: 0.875rem; }
}

/* ---- Dropdown hover on desktop ---- */
@media (min-width: 769px) {
  .has-dropdown:hover .dropdown-menu {
    display: block;
  }
}

/* ---- Mobile Nav & Layout (768px) ---- */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-list { display: none; }

  .main-nav {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg-white);
    padding: 2rem var(--space-gutter);
    overflow-y: auto;
    z-index: 99;
  }
  .main-nav.active { display: block; }
  .main-nav.active .nav-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }
  .main-nav .nav-item { border-bottom: 1px solid var(--color-border); }
  .main-nav .nav-link,
  .main-nav .nav-dropdown-trigger,
  .main-nav .dropdown-link {
    font-size: 1.125rem;
    padding: 0.75rem 0;
  }

  /* Mobile: dropdown expands inline */
  .has-dropdown .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    border-left: 3px solid var(--color-primary-light);
    margin-left: 1rem;
    padding-left: 0.5rem;
  }
  .has-dropdown.active .dropdown-menu {
    display: flex;
    flex-direction: column;
  }
  .has-dropdown .dropdown-menu li {
    border-bottom: 1px solid rgba(0,65,130,0.06);
  }

  .grid-container { grid-template-columns: 1fr; }
  .header-inner { flex-direction: column; gap: 1rem; min-height: auto; padding: 1rem var(--space-gutter); }
  .site-nav { gap: 1rem; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-partners { flex-direction: column; }
  .page-content table { font-size: 0.85rem; }
}

/* ---- Status badges for software cards ---- */
.status-badge {
  display: inline-block;
  padding: 0.2rem 0.7rem;
  font-family: var(--font-family);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 2px;
  white-space: nowrap;
}

.status-active {
  background: rgba(0,184,230,0.15);
  color: var(--color-primary-light);
}

.status-beta {
  background: rgba(0,65,130,0.12);
  color: var(--color-primary-dark);
}

.status-released {
  background: rgba(0,65,130,0.08);
  color: var(--color-primary-dark);
  border: 1px solid rgba(0,65,130,0.2);
}

.status-research {
  background: rgba(0,184,230,0.08);
  color: var(--color-primary-light);
  border: 1px solid rgba(0,184,230,0.25);
}

/* ---- News tag pill style ---- */
.tag-pill {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  font-family: var(--font-family);
  font-size: 0.72rem;
  font-weight: 500;
  background: var(--color-bg-soft);
  color: var(--color-primary-dark);
  border: 1px solid rgba(0,65,130,0.15);
  border-radius: 2px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* ---- Team member photo — circular crop ---- */
.team-avatar {
  width: 120px !important;
  height: 120px !important;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid rgba(0,184,230,0.4);
  flex-shrink: 0;
}

/* == Network Visualization Page == */
.network-visual-wrapper {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: start;
}
.network-canvas {
  background: var(--color-bg);
  border-radius: 8px;
  border: 1px solid var(--color-border);
  overflow: hidden;
}
#network-svg-canvas {
  display: block;
  width: 100%;
  height: auto;
  max-height: 600px;
}
.network-legend {
  background: var(--color-bg);
  border-radius: 8px;
  border: 1px solid var(--color-border);
  padding: 1.5rem;
  max-height: 600px;
  overflow-y: auto;
}
.legend-title {
  font-family: var(--color-heading);
  font-size: 1rem;
  font-weight: var(--color-fw-semibold);
  color: var(--color-primary-dark);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--color-primary-dark);
}
.legend-grid {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: var(--color-fs-base);
  font-weight: var(--color-fw-medium);
  color: var(--color-text-dark);
}
.legend-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  flex-shrink: 0;
}
.legend-text {
  line-height: 1.2;
}
.domain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}
.domain-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
  transition: border-color 0.3s;
}
.domain-card:hover {
  border-color: var(--color-primary-dark);
}
.domain-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}
.domain-card-title {
  font-family: var(--color-heading);
  font-size: var(--color-fs-base);
  font-weight: var(--color-fw-semibold);
  color: var(--color-primary-dark);
  margin: 0;
}
.domain-card-count {
  background: var(--color-primary-dark);
  color: var(--color-bg);
  font-size: var(--color-fs-small);
  font-weight: var(--color-fw-semibold);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
}
.domain-card-members {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.domain-member {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.375rem 0;
}
.domain-member-name {
  font-size: var(--color-fs-base);
  font-weight: var(--color-fw-medium);
  color: var(--color-text-dark);
}
.domain-member-affiliation {
  font-size: var(--color-fs-caption);
  color: var(--color-text-muted);
}

/* == Telehealth RSS Page == */
.rss-feed-container {
  max-width: 900px;
  margin: 0 auto;
}
.rss-feed-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 1.5rem;
  font-size: var(--color-fs-caption);
  flex-wrap: wrap;
}
.rss-status-dot {
  width: 8px;
  height: 8px;
  background: #28a745;
  border-radius: 50%;
  flex-shrink: 0;
}
.rss-status-text {
  font-weight: var(--color-fw-semibold);
  color: var(--color-text-dark);
}
.rss-feed-url {
  color: var(--color-primary);
  font-family: var(--color-mono);
  font-size: var(--color-fs-caption);
  margin-left: auto;
}
.rss-feed-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.rss-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
  transition: border-color 0.3s;
}
.rss-item:hover {
  border-color: var(--color-primary-dark);
}
.rss-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}
.rss-item-date {
  font-size: var(--color-fs-caption);
  color: var(--color-text-muted);
}
.rss-item-link {
  color: var(--color-primary);
  transition: color 0.3s;
}
.rss-item-link:hover {
  color: var(--color-primary-light);
}
.rss-item-title {
  font-family: var(--color-heading);
  font-size: var(--color-fs-base);
  font-weight: var(--color-fw-semibold);
  color: var(--color-text-dark);
  margin: 0 0 0.75rem 0;
}
.rss-item-title a {
  color: inherit;
  text-decoration: none;
}
.rss-item-title a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
  text-decoration-color: var(--color-primary-dark);
  text-underline-offset: 2px;
}
.rss-item-summary {
  font-size: var(--color-fs-base);
  line-height: 1.6;
  color: var(--color-text-dark);
  margin-bottom: 0.75rem;
}
.rss-item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}
.rss-tag {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-size: var(--color-fs-caption);
  font-weight: var(--color-fw-medium);
  padding: 0.2rem 0.625rem;
  border-radius: 999px;
  white-space: nowrap;
}
.rss-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 3rem 1.5rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  text-align: center;
}
.rss-empty p {
  color: var(--color-text-muted);
  font-size: var(--color-fs-base);
}
.rss-cta {
  background: var(--color-primary-dark);
  color: var(--color-bg);
  font-size: var(--color-fs-base);
  font-weight: var(--color-fw-medium);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
}
.rss-cta:hover {
  background: var(--color-primary);
}

/* == Single Article Pages (News, Publications, Team) == */
.single-page {
  padding-top: 0;
}
.single-hero {
  color: #fff;
}
.single-hero-inner {
  padding: 3rem 0;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}
.single-meta-line {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.single-section-label {
  font-size: var(--color-fs-small);
  font-weight: var(--color-fw-semibold);
  color: var(--color-primary-light);
  letter-spacing: 1px;
}
.single-separator {
  color: rgba(255, 255, 255, 0.3);
}
.single-date {
  font-size: var(--color-fs-small);
  color: rgba(255, 255, 255, 0.7);
}
.single-title {
  font-family: var(--color-heading);
  font-size: 2.5rem;
  font-weight: var(--color-fw-bold);
  line-height: 1.15;
  color: #fff;
  margin: 0 0 1rem 0;
}
.single-summary {
  font-size: var(--color-fs-base);
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.8);
  max-width: 65ch;
  margin-bottom: 1.25rem;
}
.single-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}
.single-tag {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-size: var(--color-fs-caption);
  font-weight: var(--color-fw-medium);
  padding: 0.2rem 0.625rem;
  border-radius: 999px;
  white-space: nowrap;
}
.single-content-section {
  padding: 3rem 0;
}
.single-content-container {
  max-width: 760px;
}
.single-content-body {
  font-size: var(--color-fs-base);
  line-height: 1.7;
}
.single-content-body h2 {
  font-family: var(--color-heading);
  font-size: var(--color-fs-h2);
  font-weight: var(--color-fw-bold);
  color: var(--color-primary-dark);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}
.single-content-body h3 {
  font-family: var(--color-heading);
  font-size: var(--color-fs-h4);
  font-weight: var(--color-fw-semibold);
  color: var(--color-text-dark);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}
.single-content-body p {
  margin-bottom: 1.25rem;
}
.single-content-body ul,
.single-content-body ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}
.single-content-body li {
  margin-bottom: 0.5rem;
}
.single-content-body img {
  border-radius: 8px;
  margin: 1.5rem 0;
}
.single-content-body blockquote {
  border-left: 4px solid var(--color-primary-dark);
  padding-left: 1.25rem;
  margin-left: 0;
  margin-right: 0;
  font-style: italic;
  color: var(--color-text-muted);
}
.single-content-body a {
  color: var(--color-primary-dark);
  text-decoration: underline;
  text-decoration-color: rgba(0, 65, 130, 0.3);
  text-underline-offset: 2px;
}
.single-content-body a:hover {
  text-decoration-color: var(--color-primary-dark);
}
.single-back-section {
  padding: 1.5rem 0 3rem;
}
.single-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-primary-dark);
  font-size: var(--color-fs-base);
  font-weight: var(--color-fw-medium);
  text-decoration: none;
  transition: color 0.3s;
}
.single-back-link:hover {
  color: var(--color-primary);
}
.single-back-arrow {
  font-size: 1.25rem;
}

/* Publication-specific */
.single-authors {
  font-size: var(--color-fs-base);
  color: rgba(255, 255, 255, 0.7);
  font-style: italic;
  margin-bottom: 1.25rem;
}
.publication-details {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.detail-row {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 0.75rem;
  align-items: center;
  font-size: var(--color-fs-base);
}
.detail-label {
  font-size: var(--color-fs-caption);
  font-weight: var(--color-fw-semibold);
  color: var(--color-primary-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.detail-value {
  color: rgba(255, 255, 255, 0.9);
}
.detail-link {
  color: var(--color-primary-light);
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  text-decoration: none;
  font-weight: var(--color-fw-medium);
}
.detail-link:hover {
  color: var(--color-bg);
  text-decoration: underline;
}

/* Team member-specific */
.member-hero-inner {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  padding: 3rem 0;
  max-width: 900px;
}
.member-photo-wrap {
  flex-shrink: 0;
}
.member-photo {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid rgba(255, 255, 255, 0.2);
}
.member-photo-placeholder {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-family: var(--color-heading);
  font-size: 2.5rem;
  font-weight: var(--color-fw-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 4px solid rgba(255, 255, 255, 0.2);
}
.member-info {
  flex: 1;
}
.member-info .single-title {
  font-size: var(--color-fs-h2);
  margin-bottom: 0.5rem;
}
.member-affiliation {
  font-size: var(--color-fs-base);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 1rem;
}
.member-socials {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.member-social-link {
  color: var(--color-primary-light);
  font-size: var(--color-fs-caption);
  font-weight: var(--color-fw-medium);
  padding: 0.375rem 0.75rem;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  text-decoration: none;
}
.member-social-link:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}
.member-bio-section {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}
.member-section-title {
  font-family: var(--color-heading);
  font-size: var(--color-fs-h3);
  font-weight: var(--color-fw-bold);
  color: var(--color-primary-dark);
  margin-bottom: 1rem;
}

/* ---- Client-side filter bar ---- */
.filter-bar {
  max-width: 900px;
  margin: 0 auto 2rem;
  padding: 0 var(--space-gutter);
}
.filter-group {
  margin-bottom: 1rem;
}
.filter-group:last-child {
  margin-bottom: 0;
}
.filter-label {
  font-family: var(--font-family);
  font-weight: var(--font-weight-condensed);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
  display: block;
}
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-family);
  font-weight: var(--font-weight-condensed);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid rgba(0,65,130,0.15);
  border-radius: 2px;
  padding: 0.2rem 0.65rem;
  cursor: pointer;
  transition: none;
  user-select: none;
  white-space: nowrap;
}
.filter-chip:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary-light);
}
.filter-chip.active {
  background: rgba(0,184,230,0.1);
  border-color: var(--color-primary-light);
  color: var(--color-primary-light);
}
.filter-chip .chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(0,65,130,0.2);
  transition: none;
}
.filter-chip:hover .chip-dot {
  background: var(--color-primary-light);
}
.filter-chip.active .chip-dot {
  background: var(--color-primary-light);
}
.filter-reset {
  font-family: var(--font-family);
  font-weight: var(--font-weight-condensed);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary-light);
  background: none;
  border: none;
  padding: 0.25rem 0;
  cursor: pointer;
  display: none;
  margin-top: 0.75rem;
}
.filter-reset.visible {
  display: inline-block;
  border-bottom: 1px solid rgba(0,184,230,0.4);
}
.filter-reset:hover {
  color: var(--color-primary-dark);
}

/* Instant toggle — zero-latency, no transitions */
.filter-item {
  transition: none;
}
.filter-item.hidden {
  display: none;
}

/* Filter bar on dark backgrounds */
.section-dark .filter-bar .filter-label {
  color: var(--color-bg-white);
  opacity: 0.5;
}
.section-dark .filter-bar .filter-chip {
  color: var(--color-bg-white);
  opacity: 0.6;
  border-color: rgba(255,255,255,0.2);
}
.section-dark .filter-bar .filter-chip:hover {
  opacity: 1;
  border-color: var(--color-primary-light);
  color: var(--color-primary-light);
}
.section-dark .filter-bar .filter-chip.active {
  opacity: 1;
  background: rgba(0,184,230,0.15);
  border-color: var(--color-primary-light);
  color: var(--color-primary-light);
}
.section-dark .filter-bar .filter-chip .chip-dot {
  background: rgba(255,255,255,0.3);
}
.section-dark .filter-bar .filter-chip:hover .chip-dot,
.section-dark .filter-bar .filter-chip.active .chip-dot {
  background: var(--color-primary-light);
}
.section-dark .filter-bar .filter-reset {
  color: var(--color-primary-light);
}
.section-dark .filter-bar .filter-reset.visible {
  border-color: var(--color-primary-light);
}

@media (max-width: 1024px) {
  .network-visual-wrapper {
    grid-template-columns: 1fr;
  }
  .network-legend {
    max-height: none;
    order: -1;
  }
}
@media (max-width: 768px) {
  .single-hero-inner,
  .member-hero-inner {
    padding: 2rem 0;
  }
  .single-title {
    font-size: var(--color-fs-h2);
  }
  .member-hero-inner {
    flex-direction: column;
    text-align: center;
  }
  .member-photo,
  .member-photo-placeholder {
    width: 120px;
    height: 120px;
  }
  .member-socials {
    justify-content: center;
  }
  .detail-row {
    grid-template-columns: 80px 1fr;
  }
  .rss-feed-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .rss-feed-url {
    margin-left: 0;
  }
  .domain-card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}