:root {
  --gbc-border: #e5e7eb;
  --gbc-muted: #6b7280;
  --gbc-bg: #ffffff;
  --gbc-soft-bg: #f9fafb;
  --gbc-text: #111827;
  --gbc-link: #2563eb;
}

.gbc-layout {
  display: grid;
  grid-template-columns: minmax(220px, 300px) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
  max-width: 1180px;
  margin: 0 auto;
}

.gbc-sidebar {
  position: sticky;
  top: 2rem;
  max-height: calc(100vh - 4rem);
  overflow: auto;
  padding: 1rem;
  border: 1px solid var(--gbc-border);
  border-radius: 14px;
  background: var(--gbc-soft-bg);
}

.gbc-sidebar-title {
  display: block;
  margin-bottom: 0.85rem;
  color: var(--gbc-text);
  font-weight: 700;
  text-decoration: none;
}

.gbc-search {
  margin-bottom: 1rem;
}

.gbc-search input {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--gbc-border);
  border-radius: 10px;
  background: var(--gbc-bg);
}

.gbc-tree ul {
  margin: 0;
  padding-left: 1rem;
  list-style: none;
}

.gbc-tree > ul {
  padding-left: 0;
}

.gbc-tree-item {
  margin: 0.2rem 0;
}

.gbc-tree-item a {
  display: block;
  padding: 0.35rem 0.45rem;
  border-radius: 8px;
  color: var(--gbc-text);
  text-decoration: none;
}

.gbc-tree-item a:hover,
.gbc-tree-item.is-current > a {
  background: #eef2ff;
  color: #3730a3;
}

.gbc-main {
  min-width: 0;
}

.gbc-article {
  max-width: 760px;
}

.gbc-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.2rem;
  color: var(--gbc-muted);
  font-size: 0.925rem;
}

.gbc-breadcrumbs a {
  color: var(--gbc-muted);
  text-decoration: none;
}

.gbc-breadcrumbs a:hover {
  color: var(--gbc-link);
}

.gbc-separator {
  color: #c0c4cc;
}

.gbc-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  max-width: 760px;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gbc-border);
}

.gbc-pager a {
  display: block;
  padding: 1rem;
  border: 1px solid var(--gbc-border);
  border-radius: 12px;
  color: var(--gbc-text);
  text-decoration: none;
  background: var(--gbc-bg);
}

.gbc-pager span {
  display: block;
  color: var(--gbc-muted);
  font-size: 0.85rem;
}

.gbc-next {
  text-align: right;
}

.gbc-archive-wrap,
.gbc-template-main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.gbc-project-heading a {
  color: var(--gbc-text);
  text-decoration: none;
}

.gbc-project-description {
  max-width: 760px;
  color: var(--gbc-muted);
}

.gbc-back-link a {
  color: var(--gbc-muted);
  text-decoration: none;
}

.gbc-back-link a:hover {
  color: var(--gbc-link);
}

.gbc-section-heading {
  margin: 1.5rem 0 0.75rem;
  color: var(--gbc-muted);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.gbc-project-grid,
.gbc-root-grid,
.gbc-results {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.gbc-project-grid,
.gbc-root-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.gbc-project-card,
.gbc-root-card,
.gbc-result {
  display: block;
  padding: 1rem;
  border: 1px solid var(--gbc-border);
  border-radius: 14px;
  color: var(--gbc-text);
  text-decoration: none;
  background: var(--gbc-bg);
}

.gbc-project-card:hover,
.gbc-root-card:hover,
.gbc-result:hover {
  border-color: #c7d2fe;
  box-shadow: 0 8px 24px rgba(17, 24, 39, 0.06);
}

.gbc-project-card span,
.gbc-root-card span,
.gbc-result span {
  display: block;
  margin-top: 0.35rem;
  color: var(--gbc-muted);
}

.gbc-project-card small {
  display: inline-block;
  margin-top: 0.75rem;
  color: var(--gbc-muted);
  font-size: 0.82rem;
}

.gbc-result em {
  display: inline-block;
  margin-top: 0.35rem;
  color: var(--gbc-muted);
  font-size: 0.82rem;
  font-style: normal;
}

@media (max-width: 800px) {
  .gbc-layout {
    grid-template-columns: 1fr;
  }

  .gbc-sidebar {
    position: static;
    max-height: none;
  }

  .gbc-pager {
    grid-template-columns: 1fr;
  }

  .gbc-next {
    text-align: left;
  }
}