@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;600;800&display=swap');

:root {
  --bg-color: #f7f9fc;
  --panel-bg: #ffffff;
  --panel-border: #e7edf5;
  --text-primary: #1f2933;
  --text-secondary: #4c5d73;
  --accent-color: #1e2a78;
  --accent-secondary: #0f6e8c;
  --mobile-sidebar-offset: 0px;
  
  --font-main: 'Inter', "Segoe UI", Arial, sans-serif;
  --font-heading: 'Outfit', "Segoe UI", Arial, sans-serif;
  
  --transition-smooth: all 0.3s ease;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  min-width: 320px;
}

img {
  max-width: 100%;
  height: auto;
}

.bg-blobs {
  display: none;
}

/* Layout */
.container {
  display: flex;
  min-height: 100vh;
  margin: 0;
  width: 100%;
  align-items: flex-start;
}

/* Sidebar */
.sidebar {
  flex: 0 0 280px;
  width: 280px;
  position: fixed;
  height: 100vh;
  padding: 32px 24px;
  background: linear-gradient(180deg, #1e2a78 0%, #16324f 100%);
  color: #ffffff;
  display: flex;
  flex-direction: column;
  z-index: 100;
  box-shadow: 2px 0 14px rgba(0, 0, 0, 0.08);
  overflow-y: auto;
}

.sidebar-brand {
  margin-bottom: 40px;
}

.sidebar h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.3;
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 0;
}

.sidebar nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.sidebar nav a {
  color: #e5eefc;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
}

.sidebar nav a:hover, .sidebar nav a.active {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  transform: translateX(4px);
}

.sidebar-portal-link-wrap {
  margin-top: 2rem;
  padding: 0 16px;
}

.sidebar-portal-link {
  display: block;
  width: 100%;
  text-align: center;
  background: var(--accent-secondary);
  color: #ffffff;
  padding: 12px;
  border-radius: var(--radius-md);
}

/* Main Content */
.content {
  flex: 1;
  margin-left: 280px;
  min-width: 0;
  padding: 50px 5vw;
  max-width: 1800px; /* allows dynamic wider expansion */
  width: 100%;
}

/* Keyword Highlights */
.keyword-highlight {
  background-color: #eef4fb;
  color: #0f6e8c;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.ontology-subtitle {
  color: var(--accent-color);
  font-weight: 600;
  margin-bottom: 24px;
}

section {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3vw, 40px);
  margin-bottom: 32px;
  box-shadow: 0 4px 14px rgba(22, 50, 79, 0.04);
  opacity: 1;
  transform: translateY(0);
  width: 100%;
  min-width: 0;
}

.tab-section {
  display: none;
}

.tab-section.active-tab {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--accent-color);
  margin-bottom: 8px;
  line-height: 1.12;
}

h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.55rem, 3vw, 1.9rem);
  font-weight: 700;
  color: var(--accent-color);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid #dce7f5;
}

h3 {
  font-family: var(--font-heading);
  font-size: clamp(1.1rem, 2.3vw, 1.3rem);
  font-weight: 600;
  margin-bottom: 12px;
  margin-top: 24px;
  color: var(--accent-secondary);
}

p, li {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 14px;
  overflow-wrap: anywhere;
}

ul {
  padding-left: 24px;
  margin-bottom: 20px;
}

ul li {
  margin-bottom: 8px;
}

strong {
  color: var(--accent-color);
  font-weight: 600;
}

/* Glass Panels (Now solid boxes) */
.glass-panel {
  background: #f9fbfe;
  border: 1px solid #dfe8f3;
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
  min-width: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  background: linear-gradient(135deg, #1e2a78 0%, #0f6e8c 100%);
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-smooth);
  border: none;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(30, 42, 120, 0.15);
  opacity: 0.95;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--accent-secondary);
  color: var(--accent-secondary);
}

.btn-outline:hover {
  background: var(--accent-secondary);
  color: #ffffff;
}

/* Files Grid */
.files-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

/* SPARQL Queries & Data Tables */
.query-block {
  margin-bottom: 24px;
  background: #ffffff;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(22, 50, 79, 0.03);
  min-width: 0;
}

.query-header {
  padding: 16px 20px;
  background: #f9fbfe;
  border-bottom: 1px solid var(--panel-border);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  transition: background 0.2s ease;
}

.query-header:hover {
  background: #f0f4f9;
}

.query-header h3 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--accent-color);
  flex: 1;
  min-width: 0;
  line-height: 1.4;
}

.query-icon {
  transition: transform 0.3s ease;
  color: var(--accent-color);
  flex: 0 0 auto;
  line-height: 1;
}

.query-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.query-block.open .query-content {
  max-height: 4200px;
}

.query-block.open .query-icon {
  transform: rotate(180deg);
}

.code-box {
  padding: 20px;
  border-right: 1px solid var(--panel-border);
  background: #f4f7fb;
  min-width: 0;
}

.code-box pre {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9rem;
  color: #1f2933;
  overflow-x: auto;
  white-space: pre;
  max-width: 100%;
  padding-bottom: 2px;
}

.code-box code {
  color: #1e2a78;
  background: transparent;
  padding: 0;
}

.data-box {
  padding: 20px;
  background: #ffffff;
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-box h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--accent-color);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

table {
  width: max-content;
  min-width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  padding: 10px 14px;
  text-align: left;
  border: 1px solid #dbe4ef;
  vertical-align: top;
}

th {
  background: #eef4fb;
  color: var(--accent-color);
  font-weight: 600;
}

td {
  color: var(--text-primary);
  word-break: break-word;
}

tr:hover td {
  background: #f9fbfe;
}

/* Image Visuals */
.visual-block {
  text-align: center;
  margin-bottom: 30px;
  background: #f9fbfe;
  border: 1px solid #dfe8f3;
  border-radius: var(--radius-md);
  padding: 24px;
  min-width: 0;
}

.visual-block img {
  width: 100%;
  max-width: 450px;
  border-radius: var(--radius-sm);
  border: 1px solid #d8e2ee;
  box-shadow: 0 4px 12px rgba(22, 50, 79, 0.08);
  display: block;
  margin: 16px auto 0 auto;
}

/* Ontology Cards */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.ontology-card {
  background: #ffffff;
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  box-shadow: 0 2px 8px rgba(22, 50, 79, 0.04);
  border: 1px solid var(--panel-border);
  transition: var(--transition-smooth);
  min-width: 0;
}

.ontology-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(22, 50, 79, 0.08);
}

.ontology-card h4 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 6px;
  margin-top: 0;
}

.ontology-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 0;
}

.ontology-card.border-blue {
  border-top: 4px solid #1e2a78;
  background: linear-gradient(to bottom, #f3f6fc, #ffffff);
}
.ontology-card.border-blue h4 { color: #1e2a78; }

.ontology-card.border-green {
  border-top: 4px solid #0f6e8c;
  background: linear-gradient(to bottom, #f0f7f9, #ffffff);
}
.ontology-card.border-green h4 { color: #0f6e8c; }

.ontology-card.border-orange {
  border-top: 4px solid #d97706;
  background: linear-gradient(to bottom, #fff8f0, #ffffff);
}
.ontology-card.border-orange h4 { color: #d97706; }

/* Metadata & Use Case Enhancements */
.metadata-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.meta-card {
  background: #ffffff;
  border: 1px solid var(--panel-border);
  padding: 16px;
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--accent-color);
}
.meta-card span {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
  font-weight: 600;
}
.meta-card strong {
  font-size: 1.1rem;
  color: var(--text-primary);
}

.namespace-list {
  background: #f4f7fb;
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--panel-border);
}
.namespace-list p { margin-bottom: 8px; font-weight: 600; color: var(--accent-color); }
.namespace-list ul { margin: 0; list-style: none; padding: 0; }
.namespace-list li { margin-bottom: 8px; font-family: 'Courier New', monospace; font-size: 0.9rem; border-bottom: 1px dashed #dce7f5; padding-bottom: 8px; }
.namespace-list li:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.namespace-list li { overflow-wrap: anywhere; }
.namespace-list code { font-weight: 700; display: inline-block; min-width: 60px; margin-right: 10px; }

.variant-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.tag {
  background: #eef4fb;
  color: var(--accent-secondary);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.95rem;
  font-weight: 500;
  border: 1px solid #dce7f5;
  transition: all 0.2s ease;
}
.tag:hover {
  background: var(--accent-secondary);
  color: white;
}

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.usecase-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: #ffffff;
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--panel-border);
  transition: var(--transition-smooth);
  min-width: 0;
}
.usecase-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(22, 50, 79, 0.08);
  border-color: #0f6e8c;
}
.usecase-icon {
  font-size: 1.8rem;
  background: #f9fbfe;
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
  border: 1px solid #e7edf5;
}
.usecase-card p {
  margin: 0;
  font-weight: 500;
  line-height: 1.5;
  color: var(--text-primary);
}

/* Visuals Grid layout */
.visuals-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}
.visual-block {
  margin-top: 0 !important;
  margin-bottom: 0 !important;
  display: flex;
  flex-direction: column;
}
.visual-block img {
  max-width: 100% !important;
  margin-top: 16px;
  background: white;
}

/* Lightbox Modal */
.lightbox {
  display: none;
  position: fixed;
  z-index: 9999;
  padding-top: 50px;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  overflow: auto;
}
.lightbox-content {
  margin: auto;
  display: block;
  max-width: 90%;
  max-height: 90vh;
  object-fit: contain;
  animation: zoomIn 0.3s ease;
}
.lightbox-close {
  position: absolute;
  top: 30px;
  right: 40px;
  color: #fff;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  transition: 0.2s;
}
.lightbox-close:hover {
  color: #bbb;
}
@keyframes zoomIn {
  from {transform: scale(0.9); opacity: 0;}
  to {transform: scale(1); opacity: 1;}
}

.expandable-img {
  cursor: zoom-in;
  transition: transform 0.2s;
  display: block;
  width: 100%;
  height: auto;
}
.expandable-img:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 24px rgba(22, 50, 79, 0.12);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  background: var(--accent-color);
  color: #ffffff !important;
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  margin-top: 4px;
}
.btn:hover {
  background: var(--accent-secondary);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.hero-visual,
.visual-image {
  width: 100%;
}

.contributors-panel,
.acknowledgements-panel,
.file-card,
.variant-panel {
  min-width: 0;
}

.contributors-panel {
  text-align: center;
}

.contributors-title {
  margin-top: 0;
}

.contributor-people {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 18px;
  margin-top: 24px;
  font-size: 1.1rem;
}

.contributor-person {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}

.contributor-affiliations {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 24px;
  margin-top: 16px;
}

.affiliation-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}

.affiliation-index {
  color: var(--accent-secondary);
  font-weight: 700;
}

.affiliation-link,
.reference-link {
  color: var(--text-primary);
  text-decoration: underline;
  font-weight: 500;
  text-underline-offset: 3px;
}

.reference-link {
  color: var(--accent-secondary);
  font-weight: 600;
}

.reference-entry {
  overflow-wrap: anywhere;
}

.visual-block-title,
.visual-block-copy {
  text-align: center;
}

.visual-link {
  align-self: center;
}

/* Responsive */
@media (max-width: 1100px) {
  .container {
    flex-direction: column;
    padding-top: var(--mobile-sidebar-offset, 148px);
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: auto;
    max-height: min(100vh, 220px);
    padding: calc(16px + env(safe-area-inset-top, 0px)) clamp(16px, 3.5vw, 28px) 16px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    overflow-x: hidden;
    gap: 12px;
  }

  .sidebar-brand {
    display: none;
  }

  .sidebar nav {
    flex-direction: row;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 2px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .sidebar nav::-webkit-scrollbar {
    display: none;
  }

  .sidebar nav a {
    flex: 0 0 auto;
    white-space: nowrap;
  }

  .sidebar nav a:hover,
  .sidebar nav a.active {
    transform: none;
  }

  .sidebar-portal-link-wrap {
    margin-top: 0;
    padding: 0;
  }

  .sidebar-portal-link {
    width: 100%;
    max-width: 260px;
  }

  .content {
    margin-left: 0;
    max-width: none;
    width: 100%;
    padding: clamp(20px, 4vw, 36px);
  }
}

@media (max-width: 900px) {
  .query-content {
    grid-template-columns: 1fr;
  }

  .code-box {
    border-right: none;
    border-bottom: 1px solid var(--panel-border);
  }

  .visuals-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  section {
    margin-bottom: 24px;
  }

  .files-grid,
  .cards-grid,
  .usecase-grid,
  .metadata-grid {
    grid-template-columns: 1fr;
  }

  .query-header {
    padding: 14px 16px;
  }

  .query-header h3 {
    font-size: 1rem;
  }

  .code-box,
  .data-box,
  .visual-block,
  .glass-panel {
    padding: 18px;
  }

  .contributor-people {
    font-size: 1rem;
    gap: 10px 14px;
  }

  .contributor-affiliations {
    justify-content: flex-start;
  }

  th,
  td {
    padding: 10px 12px;
  }

  .lightbox-close {
    top: 18px;
    right: 20px;
  }
}

@media (max-width: 560px) {
  .sidebar {
    padding: 16px;
  }

  .sidebar nav a {
    padding: 9px 12px;
    font-size: 0.9rem;
  }

  .content {
    padding: 16px;
  }

  section {
    padding: 20px 16px;
    border-radius: 14px;
  }

  .btn,
  .visual-link,
  .sidebar-portal-link {
    width: 100%;
  }

  .variant-tags {
    gap: 8px;
  }

  .tag {
    width: 100%;
    text-align: center;
  }

  table {
    font-size: 0.85rem;
  }

  .contributor-affiliations {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}