.sl-resource-library {
  display: grid;
  gap: 18px;
  margin: 18px 0 32px;
}

.sl-resource-library-head,
.sl-resource-library-panel,
.sl-resource-detail,
.sl-resource-upload {
  border: 1px solid #e7ecf6;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.06);
}

.sl-resource-library-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  padding: 22px;
}

.sl-resource-library-head span {
  display: block;
  margin-bottom: 5px;
  color: #2563eb;
  font-size: 12px;
  font-weight: 900;
}

.sl-resource-library-head h2,
.sl-resource-detail h3,
.sl-resource-upload h3 {
  margin: 0;
  color: #0f172a;
}

.sl-resource-library-head p,
.sl-resource-card p,
.sl-resource-detail p,
.sl-resource-upload p {
  margin: 6px 0 0;
  color: #64748b;
  line-height: 1.5;
}

.sl-resource-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px;
}

.sl-resource-filter button,
.sl-resource-library button,
.sl-resource-download {
  border: 1px solid #dbe5f5;
  border-radius: 12px;
  background: #fff;
  color: #334155;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
  text-decoration: none;
}

.sl-resource-filter button {
  min-height: 36px;
  padding: 0 12px;
}

.sl-resource-filter button.active {
  border-color: #2563eb;
  background: #f5f8ff;
  color: #1554d1;
}

.sl-resource-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  padding: 0 14px 16px;
}

.sl-resource-card {
  overflow: hidden;
  text-align: left;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.sl-resource-card:hover,
.sl-resource-card:focus-visible {
  border-color: #93c5fd;
  box-shadow: 0 16px 34px rgba(15, 23, 42, 0.1);
  transform: translateY(-1px);
}

.sl-resource-thumb {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #f8fafc;
  object-fit: cover;
}

.sl-resource-card-body {
  display: grid;
  gap: 6px;
  padding: 14px;
}

.sl-resource-card b {
  color: #0f172a;
  font-size: 16px;
}

.sl-resource-category {
  width: fit-content;
  border-radius: 999px;
  background: #f5f8ff;
  color: #2563eb;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 900;
}

.sl-resource-detail {
  display: grid;
  grid-template-columns: minmax(260px, 0.9fr) minmax(280px, 1.1fr);
  gap: 18px;
  padding: 18px;
}

.sl-resource-preview {
  width: 100%;
  border: 1px solid #e7ecf6;
  border-radius: 14px;
  background: #f8fafc;
  object-fit: cover;
}

.sl-resource-file-list {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.sl-resource-file {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  border: 1px solid #e7ecf6;
  border-radius: 14px;
  padding: 12px;
  background: #f8fafc;
}

.sl-resource-file b {
  display: block;
  color: #0f172a;
}

.sl-resource-file small {
  color: #64748b;
  font-weight: 800;
}

.sl-resource-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 12px;
  background: #2563eb;
  color: #fff;
}

.sl-resource-upload {
  display: grid;
  gap: 12px;
  padding: 18px;
}

.sl-resource-upload-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.sl-resource-upload label {
  display: grid;
  gap: 6px;
  color: #334155;
  font-weight: 900;
}

.sl-resource-upload input,
.sl-resource-upload select,
.sl-resource-upload textarea {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  background: #f8fafc;
  color: #0f172a;
  font: inherit;
  min-height: 42px;
  padding: 10px 12px;
}

.sl-resource-upload textarea {
  min-height: 96px;
  resize: vertical;
}

.sl-resource-status,
.sl-resource-empty {
  color: #64748b;
  font-weight: 800;
}

@media (max-width: 1180px) {
  .sl-resource-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .sl-resource-grid,
  .sl-resource-upload-grid,
  .sl-resource-detail {
    grid-template-columns: 1fr;
  }
}