/* Node catalog: collapsible rows + sticky filter bar.
   Category/tag colors come from node_categories.css custom properties.
   This file owns layout and component skeletons only. */

.node-catalog { display: flex; flex-direction: column; gap: 1rem; margin-top: 1rem; }

/* ─── Filter bar ─────────────────────────────────────────────────────────── */

.node-filter {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 0.5rem;
  background: var(--md-default-bg-color);
  position: sticky;
  top: 4rem;
  z-index: 5;
}

#node-filter-search {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font: inherit;
  border: 1px solid var(--md-default-fg-color--light);
  border-radius: 0.35rem;
  background: var(--md-default-bg-color);
  color: var(--md-default-fg-color);
}
#node-filter-search:focus {
  outline: 2px solid var(--md-primary-fg-color);
  outline-offset: 1px;
}

.node-filter-row {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.filter-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--md-default-fg-color--light);
  padding-top: 0.35rem;
  min-width: 4.5rem;
}
.filter-chips { display: flex; flex-wrap: wrap; gap: 0.3rem; flex: 1; }

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.18rem 0.55rem;
  font-size: 0.75rem;
  border-radius: 999px;
  cursor: pointer;
  border: 1px solid var(--md-default-fg-color--lightest);
  background: var(--md-default-bg-color);
  color: var(--md-default-fg-color);
  transition: transform 0.06s ease, box-shadow 0.06s ease, background-color 0.1s ease;
  line-height: 1;
}
.filter-chip:hover { transform: translateY(-1px); }
.filter-chip .chip-icon { width: 14px; height: 14px; flex-shrink: 0; }
.filter-chip.active {
  background: var(--md-primary-fg-color);
  color: var(--md-primary-bg-color);
  border-color: var(--md-primary-fg-color);
}
.filter-chip.category-chip[data-category] {
  border-color: var(--chip-border, var(--md-default-fg-color--lightest));
}
.filter-chip.category-chip.active[data-category] {
  background: var(--chip-fill, var(--md-primary-fg-color));
  border-color: var(--chip-border, var(--md-primary-fg-color));
  color: #222;
}
.filter-chip.tag-chip[data-tag] { border-color: var(--chip-color, var(--md-default-fg-color--lightest)); }
.filter-chip.tag-chip.active[data-tag] {
  background: var(--chip-color, var(--md-primary-fg-color));
  border-color: var(--chip-color, var(--md-primary-fg-color));
  color: #fff;
}

.node-filter-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--md-default-fg-color--light);
}
.filter-reset {
  background: none;
  border: none;
  color: var(--md-primary-fg-color);
  cursor: pointer;
  padding: 0;
  font: inherit;
}
.filter-reset:hover { text-decoration: underline; }

/* ─── Collapsible list rows ─────────────────────────────────────────────── */

.node-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 0.45rem;
  overflow: hidden;
  background: var(--md-default-bg-color);
}

details.node-row {
  display: block;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  border-left: 4px solid var(--card-border, var(--md-default-fg-color--lighter));
  background: var(--md-default-bg-color);
  font-size: 0.83rem;
  transition: background-color 0.08s ease;
  min-width: 0;
}
details.node-row:last-child { border-bottom: none; }
details.node-row[open] { background: var(--md-default-fg-color--lightest); }

/* Hide native disclosure marker, use a custom chevron */
details.node-row > summary { list-style: none; cursor: pointer; }
details.node-row > summary::-webkit-details-marker { display: none; }
details.node-row > summary::marker { display: none; content: ''; }

details.node-row > summary {
  display: grid;
  grid-template-columns: 18px 32px 1fr;
  grid-template-areas:
    "chev icon header"
    "chev icon summary";
  align-items: start;
  column-gap: 0.6rem;
  row-gap: 0.2rem;
  padding: 0.55rem 0.85rem;
  user-select: none;
}
details.node-row > summary::before {
  grid-area: chev;
  content: '';
  width: 0;
  height: 0;
  margin-top: 0.5rem;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 6px solid var(--md-default-fg-color--light);
  transition: transform 0.12s ease;
  justify-self: center;
}
details.node-row[open] > summary::before { transform: rotate(90deg); }
details.node-row > summary:hover { background: var(--md-default-fg-color--lightest); }

.row-icon { grid-area: icon; width: 28px; height: 28px; margin-top: 0.1rem; flex-shrink: 0; }

.row-header {
  grid-area: header;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem 0.5rem;
  min-width: 0;
}
.row-name {
  font-weight: 600;
  font-size: 0.92rem;
  background: none;
  padding: 0;
  color: var(--md-default-fg-color);
}
.row-module {
  font-size: 0.72rem;
  color: var(--md-default-fg-color--light);
  font-family: var(--md-code-font-family, monospace);
}

.row-category {
  font-size: 0.66rem;
  padding: 0.12rem 0.55rem;
  border-radius: 999px;
  background: var(--card-fill, var(--md-default-bg-color));
  border: 1px solid var(--card-border, var(--md-default-fg-color--lightest));
  color: #222;
  white-space: nowrap;
}

.row-tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.2rem;
}
.row-tags .tag-chip {
  display: inline-block;
  font-size: 0.62rem;
  padding: 0.05rem 0.4rem;
  border-radius: 999px;
  color: #fff;
  background: var(--chip-color, #888);
  white-space: nowrap;
}

.row-summary {
  grid-area: summary;
  color: var(--md-default-fg-color--light);
  font-size: 0.8rem;
  line-height: 1.45;
  white-space: normal;
  word-break: break-word;
}

.row-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.plugin-pill {
  font-size: 0.62rem;
  padding: 0.08rem 0.45rem;
  border-radius: 999px;
  border: 1px dashed var(--md-default-fg-color--light);
  color: var(--md-default-fg-color--light);
  background: var(--md-default-bg-color);
  white-space: nowrap;
}
.card-repo {
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0 0.25rem;
  color: var(--md-primary-fg-color);
}
.card-repo:hover { text-decoration: underline; }

/* Body — visible only when open. Indented under the name column. */
.row-body {
  padding: 0.4rem 1rem 0.9rem 3.2rem;
  background: var(--md-default-bg-color);
  border-top: 1px solid var(--md-default-fg-color--lightest);
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--md-default-fg-color);
}
.row-body h4 { margin-top: 0; }
.row-body :first-child { margin-top: 0; }
.row-body :last-child { margin-bottom: 0; }
.row-body .row-source {
  display: inline-block;
  margin-top: 0.6rem;
  font-size: 0.78rem;
}

details.node-row.is-hidden { display: none; }

/* Dark-mode tweaks */
[data-md-color-scheme="slate"] details.node-row[open] {
  background: rgba(255, 255, 255, 0.03);
}
[data-md-color-scheme="slate"] .row-category {
  color: #f4f4f6;
  background: rgba(255, 255, 255, 0.08);
}

/* ─── Catalogs overview tiles ───────────────────────────────────────────── */

.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.6rem;
  margin: 0.75rem 0 1.5rem;
}
.cat-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  padding: 0.8rem 0.6rem;
  border: 1px solid var(--card-border, var(--md-default-fg-color--lightest));
  background: var(--card-fill, var(--md-default-bg-color));
  border-radius: 0.5rem;
  text-decoration: none;
  color: #222;
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}
.cat-tile:hover { transform: translateY(-1px); box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08); }
.cat-tile-icon { width: 36px; height: 36px; }
.cat-tile-label { font-weight: 600; font-size: 0.85rem; text-transform: capitalize; }
[data-md-color-scheme="slate"] .cat-tile { color: #f4f4f6; filter: saturate(0.85); }

/* Narrow screens: tighter padding */
@media (max-width: 600px) {
  .node-filter { position: static; }
  .filter-label { min-width: 0; }
  details.node-row > summary { padding: 0.5rem 0.65rem; }
  .row-body { padding-left: 2.4rem; }
}