:root {
  --bg-dark: #0b1220;
  --bg-card-dark: rgba(255,255,255,0.06);
  --border-dark: rgba(255,255,255,0.12);
  --text-dark: #f8fafc;
  --muted-dark: #cbd5e1;

  --bg-light: #f4f7fb;
  --bg-card-light: #ffffff;
  --border-light: #e5e7eb;
  --text-light: #0f172a;
  --muted-light: #475569;

  --primary: #3b82f6;
  --primary-soft: rgba(59,130,246,0.12);
}

body.ui2 {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: linear-gradient(180deg, #0b1220 0%, #0e1627 100%);
  color: var(--text-dark);
  padding-top: 0;
}

body.ui2.light {
  background: linear-gradient(180deg, #eef4ff 0%, #f8fafc 100%);
  color: var(--text-light);
}

body.ui2 a { color: inherit; text-decoration: none; }

body.ui2 .main-content {
  padding-top: 0;
}

body.ui2 header {
  position: sticky;
  top: 14px;
  padding: 0.75rem 0;
  background: transparent;
  box-shadow: none;
}

body.ui2 .header-container {
  max-width: 1200px;
  padding: 0 1.5rem;
}

body.ui2 .topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0.95rem;
  border-radius: 999px;
  border: 1px solid var(--border-light);
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(14px);
  box-shadow: none;
}

body.ui2.dark-mode .topbar,
body.ui2:not(.light) .topbar {
  border-color: var(--border-dark);
  background: rgba(15,23,42,0.75);
}

body.ui2 .logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 180px;
  font-weight: 700;
}

body.ui2 .logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: transparent;
  display: grid;
  place-items: center;
}

body.ui2 .logo-icon img {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: block;
  object-fit: contain;
}

body.ui2 .logo-text {
  font-weight: 800;
  font-size: 1.05rem;
  color: inherit;
  letter-spacing: -0.01em;
}

body.ui2 nav ul,
body.ui2 #mainNav ul {
  list-style: none;
  display: none;
  gap: 0.9rem;
  align-items: center;
  justify-content: center;
  padding: 0;
  margin: 0;
}

body.ui2 nav a,
body.ui2 #mainNav a {
  font-size: 0.92rem;
  color: inherit;
  opacity: 0.8;
  padding: 0.35rem 0.55rem;
  border-radius: 10px;
  transition: all 0.25s ease-in-out;
}

body.ui2 nav a:hover,
body.ui2 #mainNav a:hover {
  background: rgba(15, 23, 42, 0.06);
  opacity: 1;
}

body.ui2.dark-mode nav a:hover,
body.ui2:not(.light) nav a:hover,
body.ui2.dark-mode #mainNav a:hover,
body.ui2:not(.light) #mainNav a:hover {
  background: rgba(255,255,255,0.06);
}

body.ui2 .header-buttons .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  border-radius: 999px;
  padding: 0.7rem 1.05rem;
  font-weight: 650;
  border: 1px solid transparent;
  transition: all 0.25s ease-in-out;
  white-space: nowrap;
}

body.ui2 .header-buttons .btn-primary {
  background: linear-gradient(120deg, var(--primary), #60a5fa);
  color: #fff;
  box-shadow: 0 18px 36px rgba(37, 99, 235, 0.35);
}

body.ui2 .header-buttons .btn-primary:hover {
  transform: translateY(-2px);
}

body.ui2 .header-buttons .btn-secondary {
  background: rgba(255,255,255,0.72);
  border-color: var(--border-light);
  color: inherit;
}

body.ui2.dark-mode .header-buttons .btn-secondary,
body.ui2:not(.light) .header-buttons .btn-secondary {
  background: rgba(255,255,255,0.08);
  border-color: var(--border-dark);
}

body.ui2 .header-buttons .btn-secondary:hover {
  transform: translateY(-2px);
  border-color: rgba(59, 130, 246, 0.35);
}

body.ui2 .mobile-menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid var(--border-light);
  background: rgba(255,255,255,0.7);
  color: inherit;
  cursor: pointer;
  transition: all 0.25s ease-in-out;
}

body.ui2.dark-mode .mobile-menu-toggle,
body.ui2:not(.light) .mobile-menu-toggle {
  border-color: var(--border-dark);
  background: rgba(255,255,255,0.08);
}

body.ui2 .mobile-menu-toggle:hover {
  transform: translateY(-2px);
  border-color: rgba(59, 130, 246, 0.35);
}

@media (min-width: 980px) {
  body.ui2 nav ul,
  body.ui2 #mainNav ul { display: inline-flex; }
  body.ui2 .mobile-menu-toggle { display: none; }
}

@media (max-width: 980px) {
  body.ui2 .header-container { padding: 0 1rem; }
  body.ui2 .topbar { border-radius: 20px; padding: 0.75rem; }
  body.ui2 .logo-text { font-size: 1rem; }
  body.ui2 .header-buttons .btn { padding: 0.6rem 0.9rem; }
}

body.ui2 .page {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem 4rem;
  display: grid;
  gap: 2rem;
}

@media (min-width: 1024px) {
  body.ui2 .page { grid-template-columns: 260px minmax(0, 1fr); }
}

@media (max-width: 1024px) {
  body.ui2 .page { padding: 0 1.25rem 3rem; }
  body.ui2 .sidebar { display: none; }
}

body.ui2 .content { min-width: 0; }

body.ui2 .sidebar {
  display: none;
  position: sticky;
  top: 98px;
  align-self: start;
  border-radius: 20px;
  padding: 1.25rem;
  background: rgba(255,255,255,0.85);
  border: 1px solid var(--border-light);
  box-shadow: 0 24px 45px rgba(15,23,42,0.08);
}

body.ui2.dark-mode .sidebar,
body.ui2:not(.light) .sidebar {
  background: rgba(15,23,42,0.7);
  border-color: var(--border-dark);
}

@media (min-width: 1024px) {
  body.ui2 .sidebar { display: grid; gap: 1.2rem; }
}

body.ui2 .sidebar-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: 16px;
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--border-light);
}

body.ui2.dark-mode .sidebar-logo,
body.ui2:not(.light) .sidebar-logo {
  background: rgba(255,255,255,0.08);
  border-color: var(--border-dark);
}

body.ui2 .sidebar-logo img {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  object-fit: contain;
  background: #fff;
  padding: 6px;
}

body.ui2 .sidebar-logo strong { display: block; font-size: 0.98rem; }
body.ui2 .sidebar-logo span { display: block; font-size: 0.78rem; color: var(--muted-light); }
body.ui2.dark-mode .sidebar-logo span,
body.ui2:not(.light) .sidebar-logo span { color: var(--muted-dark); }

body.ui2 .sidebar-section { display: grid; gap: 0.75rem; }
body.ui2 .sidebar-title {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted-light);
}
body.ui2.dark-mode .sidebar-title,
body.ui2:not(.light) .sidebar-title { color: var(--muted-dark); }

body.ui2 .sidebar-nav { display: grid; gap: 0.45rem; }
body.ui2 .sidebar-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  padding: 0.65rem 0.8rem;
  border-radius: 12px;
  border: 1px solid transparent;
  background: rgba(255,255,255,0.8);
  color: inherit;
  font-size: 0.92rem;
  transition: all 0.25s ease-in-out;
}
body.ui2.dark-mode .sidebar-link,
body.ui2:not(.light) .sidebar-link { background: rgba(255,255,255,0.06); }
body.ui2 .sidebar-link:hover {
  border-color: rgba(59,130,246,0.35);
  transform: translateX(2px);
}

body.ui2 .sidebar-card {
  padding: 0.85rem;
  border-radius: 14px;
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.25);
  color: inherit;
  font-size: 0.85rem;
}

body.ui2 .sidebar-actions { display: grid; gap: 0.6rem; }

body.ui2 .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  border-radius: 999px;
  padding: 0.7rem 1.05rem;
  font-weight: 650;
  border: 1px solid transparent;
  transition: all 0.25s ease-in-out;
  white-space: nowrap;
}

body.ui2 .button.primary {
  background: linear-gradient(120deg, var(--primary), #60a5fa);
  color: #fff;
  box-shadow: 0 18px 36px rgba(37, 99, 235, 0.35);
}

body.ui2 .button.primary:hover { transform: translateY(-2px); }

body.ui2 .button.ghost {
  background: rgba(255,255,255,0.72);
  border-color: var(--border-light);
  color: inherit;
}

body.ui2.dark-mode .button.ghost,
body.ui2:not(.light) .button.ghost {
  background: rgba(255,255,255,0.08);
  border-color: var(--border-dark);
}

body.ui2 .button.ghost:hover {
  transform: translateY(-2px);
  border-color: rgba(59, 130, 246, 0.35);
}

body.ui2 .theme {
  position: fixed;
  bottom: 18px;
  right: 18px;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid var(--border-light);
  background: rgba(255,255,255,0.9);
  color: var(--text-light);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(15,23,42,0.12);
  z-index: 120;
  transition: all 0.25s ease-in-out;
}

body.ui2 .theme:hover { transform: translateY(-2px); border-color: rgba(59,130,246,0.35); }

body.ui2.dark-mode .theme,
body.ui2:not(.light) .theme {
  background: rgba(15,23,42,0.85);
  color: var(--text-dark);
  border-color: var(--border-dark);
  box-shadow: 0 10px 25px rgba(0,0,0,0.35);
}

body.ui2 .search-hero,
body.ui2 .collections-hero,
body.ui2 .journals-hero,
body.ui2 .wiki-hero {
  background: linear-gradient(135deg, #dbeafe, #eff6ff) !important;
  color: inherit !important;
  border-radius: 24px;
  margin: 2rem auto 3rem;
  max-width: 1200px;
  padding: 3rem;
  box-shadow: 0 16px 30px rgba(15, 23, 42, 0.08);
}

@media (max-width: 900px) {
  body.ui2 .search-hero,
  body.ui2 .collections-hero,
  body.ui2 .journals-hero,
  body.ui2 .wiki-hero {
    padding: 2.25rem 1.5rem;
    margin: 1.5rem auto 2rem;
  }
  body.ui2 .hero-title { font-size: 2rem; }
  body.ui2 .hero-subtitle { font-size: 0.98rem; }
}

body.ui2 .hero-title {
  font-size: 2.6rem;
  line-height: 1.15;
}

body.ui2 .hero-subtitle {
  font-size: 1.05rem;
  opacity: 0.85;
}

body.ui2.dark-mode .search-hero,
body.ui2.dark-mode .collections-hero,
body.ui2.dark-mode .journals-hero,
body.ui2.dark-mode .wiki-hero,
body.ui2:not(.light) .search-hero,
body.ui2:not(.light) .collections-hero,
body.ui2:not(.light) .journals-hero,
body.ui2:not(.light) .wiki-hero {
  background: linear-gradient(135deg, #1e3a8a, #0f172a) !important;
  color: var(--text-dark) !important;
}

body.ui2 .search-box {
  background: transparent;
  box-shadow: none;
  margin-top: -2.5rem;
}

body.ui2 .search-form-large {
  background: rgba(255,255,255,0.7);
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(12px);
}

body.ui2.dark-mode .search-form-large,
body.ui2:not(.light) .search-form-large {
  background: rgba(15,23,42,0.7);
  border-color: var(--border-dark);
}

body.ui2 .search-input {
  background: transparent;
  border-radius: 14px;
}

body.ui2 .search-form-collections,
body.ui2 .search-form-wiki {
  background: rgba(255,255,255,0.7);
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(12px);
}

body.ui2 .advanced-search-options {
  background: rgba(255,255,255,0.6);
  border-radius: 16px;
  border: 1px solid var(--border-light);
  backdrop-filter: blur(12px);
}

body.ui2 select,
body.ui2 .search-input {
  background: rgba(255,255,255,0.7);
  border-color: var(--border-light);
}

body.ui2 .search-input-group {
  gap: 0.75rem;
}

body.ui2 .search-input {
  padding: 0.9rem 1.1rem;
  font-size: 1rem;
}

body.ui2 .advanced-search-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: rgba(59,130,246,0.12);
  color: var(--primary);
  font-weight: 600;
  margin-top: 0.5rem;
}

body.ui2 .content-type-tabs {
  background: transparent;
  box-shadow: none;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  body.ui2 .search-input-group { flex-direction: column; }
  body.ui2 .search-form-large { padding: 1.25rem; }
  body.ui2 .search-input { width: 100%; }
  body.ui2 .search-form-large .btn { width: 100%; justify-content: center; }
  body.ui2 .content-type-tabs .tabs-container { flex-wrap: wrap; justify-content: center; }
  body.ui2 .content-type-tab { flex: 1 1 auto; text-align: center; }
}

body.ui2 .content-type-tabs .tabs-container {
  background: rgba(255,255,255,0.8);
  border: 1px solid var(--border-light);
  border-radius: 999px;
  padding: 0.35rem;
  backdrop-filter: blur(12px);
}

body.ui2 .collections-nav,
body.ui2 .collections-tabs,
body.ui2 .wiki-categories-section {
  background: transparent;
  box-shadow: none;
}

body.ui2 .collections-tabs,
body.ui2 .wiki-categories-filters {
  gap: 0.75rem;
}

body.ui2 .collections-tab,
body.ui2 .wiki-category-btn {
  border-radius: 999px;
  background: rgba(255,255,255,0.65);
  border: 1px solid var(--border-light);
}

body.ui2 .collections-tab.active,
body.ui2 .wiki-category-btn.active {
  background: linear-gradient(120deg, var(--primary), #60a5fa);
  color: #fff;
  border-color: transparent;
}

body.ui2 .content-type-tab {
  border-radius: 999px;
  font-weight: 600;
}

body.ui2 .content-type-tab.active {
  background: linear-gradient(120deg, var(--primary), #60a5fa);
  color: #fff;
}

body.ui2 .search-results-grid,
body.ui2 .journals-grid,
body.ui2 .collections-grid,
body.ui2 .wiki-grid {
  gap: 1.5rem;
}

body.ui2 .result-card,
body.ui2 .journal-card,
body.ui2 .collection-card,
body.ui2 .wiki-card {
  border-radius: 16px;
  border: 1px solid var(--border-light);
  box-shadow: 0 16px 30px rgba(15, 23, 42, 0.08);
}

body.ui2 .result-card:hover,
body.ui2 .journal-card:hover,
body.ui2 .collection-card:hover,
body.ui2 .wiki-card:hover {
  transform: translateY(-4px);
}

body.ui2.dark-mode .search-form-large,
body.ui2:not(.light) .search-form-large {
  border-color: var(--border-dark);
}

body.ui2.dark-mode .content-type-tabs .tabs-container,
body.ui2:not(.light) .content-type-tabs .tabs-container {
  background: rgba(15,23,42,0.6);
  border-color: var(--border-dark);
}

body.ui2.dark-mode .collections-tab,
body.ui2.dark-mode .wiki-category-btn,
body.ui2:not(.light) .collections-tab,
body.ui2:not(.light) .wiki-category-btn {
  background: rgba(15,23,42,0.65);
  border-color: var(--border-dark);
}

body.ui2.dark-mode .search-form-collections,
body.ui2.dark-mode .search-form-wiki,
body.ui2:not(.light) .search-form-collections,
body.ui2:not(.light) .search-form-wiki {
  background: rgba(15,23,42,0.7);
  border-color: var(--border-dark);
}

body.ui2.dark-mode .advanced-search-options,
body.ui2:not(.light) .advanced-search-options {
  background: rgba(15,23,42,0.6);
  border-color: var(--border-dark);
}

body.ui2.dark-mode select,
body.ui2.dark-mode .search-input,
body.ui2:not(.light) select,
body.ui2:not(.light) .search-input {
  background: rgba(15,23,42,0.6);
  color: var(--text-dark);
  border-color: var(--border-dark);
}

body.ui2.dark-mode .result-card,
body.ui2:not(.light) .result-card,
body.ui2.dark-mode .journal-card,
body.ui2.dark-mode .collection-card,
body.ui2.dark-mode .wiki-card,
body.ui2:not(.light) .journal-card,
body.ui2:not(.light) .collection-card,
body.ui2:not(.light) .wiki-card {
  background: rgba(255,255,255,0.06);
  border-color: var(--border-dark);
}

body.ui2.dark-mode .result-title,
body.ui2:not(.light) .result-title {
  color: #e1e1e1;
}

body.ui2.dark-mode .result-author,
body.ui2.dark-mode .result-meta,
body.ui2.dark-mode .result-stats,
body.ui2.dark-mode .result-description,
body.ui2.dark-mode .result-year,
body.ui2.dark-mode .result-filesize,
body.ui2.dark-mode .result-publisher,
body.ui2.dark-mode .result-location,
body.ui2.dark-mode .result-curator,
body.ui2:not(.light) .result-author,
body.ui2:not(.light) .result-meta,
body.ui2:not(.light) .result-stats,
body.ui2:not(.light) .result-description,
body.ui2:not(.light) .result-year,
body.ui2:not(.light) .result-filesize,
body.ui2:not(.light) .result-publisher,
body.ui2:not(.light) .result-location,
body.ui2:not(.light) .result-curator {
  color: #a0a0a0;
}