.resource-library-hero {
  padding-block: var(--space-6);
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(90deg, rgba(217, 226, 243, 0.8) 1px, transparent 1px),
    linear-gradient(rgba(217, 226, 243, 0.8) 1px, transparent 1px),
    #eef3ff;
  background-size: 36px 36px;
}

.resource-library-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: var(--space-5);
  align-items: start;
}

.resource-sidebar,
.resource-main,
.resource-controls,
.resource-list-item {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.resource-sidebar {
  position: sticky;
  top: 88px;
  display: grid;
  gap: 0.55rem;
  padding: var(--space-3);
}

.resource-sidebar h2 {
  margin: var(--space-3) 0 0.15rem;
  color: var(--color-muted);
  font-size: 0.92rem;
}

.resource-filter-button {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
  border: 1px solid transparent;
  border-radius: 7px;
  padding: 0.62rem 0.7rem;
  background: transparent;
  color: var(--color-text);
  font: inherit;
  font-weight: 800;
  text-align: left;
  cursor: pointer;
}

.resource-filter-button span {
  color: var(--color-muted);
}

.resource-filter-sub {
  margin-left: 0.7rem;
  width: calc(100% - 0.7rem);
  padding-block: 0.48rem;
  color: #475569;
  font-size: 0.92rem;
  font-weight: 700;
}

.resource-filter-button:hover,
.resource-filter-button.is-active {
  border-color: #c7d7fe;
  background: #eef3ff;
  color: var(--color-primary-dark);
}

.resource-main {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
}

.resource-controls {
  display: grid;
  grid-template-columns: auto minmax(220px, 1fr) auto minmax(150px, 220px) auto;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  box-shadow: none;
}

.resource-controls label {
  font-weight: 800;
}

.resource-controls input,
.resource-controls select {
  min-height: 42px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 0.58rem 0.75rem;
  background: #fff;
}

.resource-result-meta {
  color: var(--color-muted);
  font-weight: 800;
}

.resource-result-meta strong {
  color: var(--color-text);
}

.resource-list {
  display: grid;
  gap: var(--space-3);
}

.resource-list-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-4);
  overflow: hidden;
}

.resource-list-item[hidden] {
  display: none;
}

.resource-list-item h2 {
  margin: 0.35rem 0 0.25rem;
  font-size: 1.16rem;
}

.resource-list-item p {
  margin: 0;
  color: var(--color-muted);
}

.resource-list-body {
  min-width: 0;
}

.resource-preview.markdown-body {
  position: relative;
  max-width: 100%;
  max-height: 8.5rem;
  margin-top: 0.35rem;
  padding: 0;
  border: 0;
  border-radius: 0;
  overflow: hidden;
  background: transparent;
  box-shadow: none;
  color: var(--color-muted);
  font-size: 0.94rem;
}

.resource-preview.markdown-body::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 1.8rem;
  background: linear-gradient(rgba(255, 255, 255, 0), #fff);
  pointer-events: none;
}

.resource-preview.markdown-body > * {
  max-width: 100%;
}

.resource-preview.markdown-body h1,
.resource-preview.markdown-body h2,
.resource-preview.markdown-body h3,
.resource-preview.markdown-body h4 {
  margin: 0.2rem 0;
  padding: 0;
  border: 0;
  color: var(--color-text);
  font-size: 0.98rem;
  line-height: 1.45;
}

.resource-preview.markdown-body p,
.resource-preview.markdown-body li {
  margin: 0.18rem 0;
  color: var(--color-muted);
  line-height: 1.58;
}

.resource-preview.markdown-body ul,
.resource-preview.markdown-body ol {
  margin: 0.2rem 0;
  padding-left: 1.2rem;
}

.resource-preview.markdown-body img {
  max-width: 100%;
  max-height: 96px;
  margin: 0.35rem 0;
  object-fit: contain;
}

.resource-preview.markdown-body pre,
.resource-preview.markdown-body table {
  max-width: 100%;
  overflow-x: auto;
}

.resource-preview.markdown-body mjx-container {
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
}

.resource-preview.markdown-body mjx-container[display="true"] {
  display: block;
  margin: 0.25rem 0;
}

.resource-preview.markdown-body svg {
  max-width: 100%;
}

.resource-tags,
.resource-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.resource-meta {
  margin-top: var(--space-2);
  color: var(--color-muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.resource-tag {
  display: inline-flex;
  padding: 0.22rem 0.55rem;
  border-radius: 999px;
  background: #eef2ff;
  color: var(--color-primary-dark);
  font-size: 0.82rem;
  font-weight: 800;
}

.type-tag {
  background: #f1f5f9;
  color: #475569;
}

.tool-tag,
.recent-tag {
  background: #ecfdf3;
  color: #067647;
}

.tag-chip {
  background: #fff7ed;
  color: #9a3412;
}

.format-tag {
  background: #eff6ff;
  color: #1d4ed8;
}

.resource-pdf-summary {
  margin-top: 0.45rem !important;
}

.pdf-toolbar {
  flex-wrap: wrap;
}

.pdf-toolbar [data-pdf-status] {
  color: var(--color-muted);
  font-weight: 700;
}

.pdf-reader-shell {
  max-width: 1180px;
}

.pdf-pages {
  display: grid;
  justify-items: center;
  gap: 1.25rem;
  min-height: 360px;
  padding: 1rem;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: #d8dee8;
}

.pdf-page {
  max-width: none;
  line-height: 0;
  background: #fff;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.18);
}

.pdf-page canvas {
  display: block;
}

.pdf-reader-error {
  padding: 3rem 1rem;
  text-align: center;
}

@media (max-width: 980px) {
  .resource-library-layout,
  .resource-controls,
  .resource-list-item {
    grid-template-columns: 1fr;
  }

  .resource-sidebar {
    position: static;
  }
}