.c-library__header {
  text-align: center;
  margin-bottom: var(--space-5);
}
.c-library__title-main {
  font-family: var(--font-serif); font-optical-sizing: auto;
  font-size: var(--fs-2xl); font-weight: var(--fw-light);
  letter-spacing: var(--ls-display);
  line-height: var(--lh-tight);
  background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.6) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: var(--space-2);
}
.c-library__subtitle {
  font-size: var(--fs-sm); color: var(--text-3);
}

.c-library__search {
  width: 100%;
  margin-bottom: var(--space-5);
}

.c-library__empty {
  text-align: center; color: var(--text-3);
  font-size: var(--fs-sm); margin-top: var(--space-8);
}

.c-library__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
}

.c-library__card {
  padding: var(--space-5);
  padding-top: var(--space-4);
  background: var(--glass);
  border: 1px solid var(--border);
  border-top: 3px solid var(--domain);
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex; flex-direction: column;
  transition: border-color var(--dur-fast) var(--ease),
              background var(--dur-fast) var(--ease),
              transform var(--dur-fast) var(--ease),
              box-shadow var(--dur-fast) var(--ease);
}
.c-library__card:hover {
  border-color: var(--border-strong);
  border-top-color: var(--domain);
  background: var(--glass-2);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.c-library__card:active {
  transform: translateY(0);
  box-shadow: none;
}
.c-library__card:focus-visible {
  outline: 2px solid var(--domain); outline-offset: 2px;
}

.c-library__title {
  font-family: var(--font-serif); font-optical-sizing: auto;
  font-size: var(--fs-md); font-weight: var(--fw-medium);
  color: var(--text); line-height: 1.35;
  margin-bottom: var(--space-2);
}

.c-library__summary {
  font-size: var(--fs-sm); color: var(--text-2);
  line-height: var(--lh-normal);
  margin-bottom: var(--space-3);
  flex: 1;
}

.c-library__tags {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-bottom: var(--space-3);
}
.c-library__tag {
  font-size: var(--fs-xs);
  color: color-mix(in srgb, var(--domain) 80%, white);
  background: color-mix(in srgb, var(--domain) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--domain) 15%, transparent);
  padding: 2px 8px; border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
}

.c-library__cta {
  font-size: var(--fs-xs); color: var(--domain);
  font-weight: var(--fw-medium);
  margin-top: auto; opacity: 0.7;
  transition: opacity var(--dur-fast) var(--ease);
}
.c-library__card:hover .c-library__cta {
  opacity: 1;
}

/* ── Detail view ── */
.c-library__detail {
  display: flex; flex-direction: column; gap: var(--space-4);
}
.c-library__detail-loading {
  text-align: center; color: var(--text-3);
  font-size: var(--fs-sm); padding: var(--space-8);
}
.c-library__detail-header {
  display: flex; align-items: center; justify-content: space-between;
}
.c-library__detail-actions {
  display: flex; gap: var(--space-2);
}
.c-library__detail-meta {
  padding: var(--space-5);
  background: var(--glass); border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.c-library__detail-title {
  font-family: var(--font-serif); font-optical-sizing: auto;
  font-size: var(--fs-xl); font-weight: var(--fw-medium);
  color: var(--text); line-height: var(--lh-tight);
  margin-bottom: var(--space-2);
}
.c-library__detail-author {
  font-size: var(--fs-sm); color: var(--text-3);
  margin-bottom: var(--space-2);
}
.c-library__detail-summary {
  font-size: var(--fs-sm); color: var(--text-2);
  line-height: var(--lh-relaxed);
  margin-bottom: var(--space-3);
}
.c-library__detail-info {
  display: flex; flex-wrap: wrap; gap: var(--space-2);
  margin-bottom: var(--space-3);
}
.c-library__detail-chip {
  font-size: var(--fs-xs); color: var(--text-3);
  background: var(--surface); border: 1px solid var(--border-subtle);
  padding: 2px 10px; border-radius: var(--radius-pill);
}
.c-library__detail-tags {
  display: flex; flex-wrap: wrap; gap: 6px;
}

/* ── Tabs ── */
.c-library__detail-tabs {
  display: flex; gap: 2px;
  background: var(--surface); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm); padding: 2px;
  width: fit-content;
}
.c-library__detail-tab {
  font-family: var(--font); font-size: var(--fs-xs); font-weight: var(--fw-medium);
  color: var(--text-3); background: none; border: none;
  padding: 6px 14px; border-radius: 4px;
  cursor: pointer; transition: all var(--dur-fast) var(--ease);
  white-space: nowrap;
}
.c-library__detail-tab:hover { color: var(--text-2); }
.c-library__detail-tab--active {
  color: var(--text); background: color-mix(in srgb, var(--domain) 20%, transparent);
}

/* ── Document content ── */
.c-library__detail-content {
  padding: var(--space-5);
  background: var(--glass); border: 1px solid var(--border);
  border-left: 3px solid var(--domain);
  border-radius: var(--radius-md);
  max-height: calc(100vh - 400px);
  overflow-y: auto;
}
.c-library__detail-content .md-body {
  font-size: var(--fs-sm); line-height: var(--lh-relaxed); color: var(--text-2);
}
.c-library__detail-content .md-body strong { color: var(--text); }
.c-library__detail-content .md-body h1,
.c-library__detail-content .md-body h2,
.c-library__detail-content .md-body h3,
.c-library__detail-content .md-body h4 {
  color: var(--text);
  font-family: var(--font-serif); font-optical-sizing: auto;
  letter-spacing: var(--ls-tight);
}
.c-library__detail-content .md-body h2 { font-size: var(--fs-lg); font-weight: var(--fw-medium); }
.c-library__detail-content .md-body h3 { font-size: var(--fs-md); font-weight: var(--fw-medium); }
.c-library__detail-content .md-body pre {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: var(--space-3);
  overflow-x: auto;
}
.c-library__detail-content .md-body code {
  font-family: var(--font-mono); font-size: var(--fs-xs);
}

/* ── Downloads ── */
.c-library__downloads {
  display: flex; gap: var(--space-2); flex-wrap: wrap;
}
.c-library__download {
  font-size: var(--fs-xs); font-weight: var(--fw-medium);
  color: var(--text-2); background: var(--glass);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 6px 14px; cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
  text-decoration: none; display: inline-flex; align-items: center; gap: 6px;
}
.c-library__download:hover {
  color: var(--text); background: var(--glass-2);
  border-color: var(--border-strong);
}

@media (max-width: 640px) {
  .c-library__title-main { font-size: var(--fs-xl); }
  .c-library__grid { grid-template-columns: 1fr; }
  .c-library__detail-header { flex-direction: column; gap: var(--space-2); align-items: flex-start; }
  .c-library__detail-title { font-size: var(--fs-lg); }
  .c-library__detail-tabs { flex-wrap: wrap; }
  .c-library__detail-content { max-height: none; }
}