.lds-library-shell,
.lds-library-reader {
  --lds-green: #174f3a;
  --lds-green-2: #247353;
  --lds-gold: #c79a3b;
  --lds-ink: #1f2933;
  --lds-muted: #667085;
  --lds-border: #e4e7ec;
  --lds-surface: #ffffff;
  --lds-soft: #f6f8f7;
  width: 100%;
  max-width: 1240px;
  margin: 24px auto;
  color: var(--lds-ink);
  box-sizing: border-box;
}

.lds-library-shell *,
.lds-library-reader * { box-sizing: border-box; }

.lds-library-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 30px;
  border-radius: 20px;
  background: linear-gradient(135deg, #123f30, #246d50);
  color: #fff;
  box-shadow: 0 18px 50px rgba(18, 63, 48, .16);
}

.lds-library-eyebrow {
  display: inline-block;
  margin-bottom: 8px;
  color: #efd9a7;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .13em;
}

.lds-library-hero h2 {
  margin: 0 0 8px;
  color: #fff;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.1;
}

.lds-library-hero p {
  margin: 0;
  max-width: 700px;
  color: rgba(255,255,255,.86);
  font-size: 16px;
}

.lds-library-stat {
  flex: 0 0 auto;
  min-width: 116px;
  padding: 18px 20px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 16px;
  background: rgba(255,255,255,.08);
  text-align: center;
}

.lds-library-stat strong {
  display: block;
  font-size: 32px;
  line-height: 1;
}

.lds-library-stat span {
  display: block;
  margin-top: 7px;
  color: rgba(255,255,255,.8);
  font-size: 13px;
}

.lds-library-tools {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 310px);
  gap: 12px;
  margin: 22px 0 10px;
}

.lds-library-search-wrap,
.lds-library-filter-wrap {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 52px;
  border: 1px solid var(--lds-border);
  border-radius: 14px;
  background: var(--lds-surface);
  box-shadow: 0 5px 18px rgba(16,24,40,.04);
}

.lds-library-search-icon {
  flex: 0 0 auto;
  margin-left: 16px;
  color: var(--lds-green-2);
  font-size: 25px;
  line-height: 1;
  transform: rotate(-18deg);
}

.lds-library-search,
.lds-library-filter {
  width: 100%;
  height: 50px;
  margin: 0 !important;
  border: 0 !important;
  outline: 0 !important;
  background: transparent !important;
  color: var(--lds-ink) !important;
  box-shadow: none !important;
  font: inherit;
}

.lds-library-search { padding: 0 46px 0 12px !important; }
.lds-library-filter { padding: 0 14px !important; cursor: pointer; }

.lds-library-clear {
  position: absolute;
  right: 10px;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: #eef2f0;
  color: #475467;
  font-size: 22px;
  line-height: 30px;
  cursor: pointer;
}

.lds-library-result-line {
  margin: 13px 2px 15px;
  color: var(--lds-muted);
  font-size: 14px;
}

.lds-library-result-count { font-weight: 700; color: var(--lds-green); }

.lds-library-grid {
  display: grid;
  grid-template-columns: repeat(var(--lds-library-columns, 4), minmax(0, 1fr));
  gap: 22px;
}

.lds-library-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--lds-border);
  border-radius: 18px;
  background: var(--lds-surface);
  box-shadow: 0 8px 24px rgba(16,24,40,.06);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.lds-library-card:hover {
  transform: translateY(-4px);
  border-color: #cbd8d2;
  box-shadow: 0 16px 36px rgba(16,24,40,.11);
}

.lds-library-card[hidden] { display: none !important; }

.lds-library-cover {
  position: relative;
  display: block;
  aspect-ratio: 4 / 5.3;
  overflow: hidden;
  background: #e9efec;
  text-decoration: none !important;
}

.lds-library-cover img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform .25s ease;
  -webkit-user-drag: none;
  user-select: none;
}

.lds-library-card:hover .lds-library-cover img { transform: scale(1.025); }

.lds-library-book-spine {
  position: absolute;
  inset: 0 auto 0 0;
  width: 8px;
  background: linear-gradient(90deg, rgba(0,0,0,.2), rgba(255,255,255,.09));
  pointer-events: none;
}

.lds-library-cover-placeholder {
  display: grid;
  place-items: center;
  align-content: center;
  width: 100%;
  height: 100%;
  gap: 8px;
  background:
    radial-gradient(circle at 70% 20%, rgba(199,154,59,.24), transparent 32%),
    linear-gradient(150deg, #183f31, #2e7557);
  color: #fff;
}

.lds-library-cover-placeholder span {
  display: inline-block;
  padding: 5px 10px;
  border: 1px solid rgba(255,255,255,.4);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: .12em;
}

.lds-library-cover-placeholder strong { font-size: 34px; letter-spacing: .08em; }

.lds-library-card-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 17px;
}

.lds-library-category {
  margin-bottom: 8px;
  color: var(--lds-green-2);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .035em;
  text-transform: uppercase;
}

.lds-library-card h3 {
  margin: 0 0 7px;
  font-size: 18px;
  line-height: 1.35;
}

.lds-library-card h3 a {
  color: var(--lds-ink);
  text-decoration: none !important;
}

.lds-library-card h3 a:hover { color: var(--lds-green-2); }

.lds-library-lecturer {
  margin-bottom: 8px;
  color: #475467;
  font-size: 13px;
}

.lds-library-summary {
  display: -webkit-box;
  overflow: hidden;
  margin: 0 0 14px;
  color: var(--lds-muted);
  font-size: 13.5px;
  line-height: 1.55;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.lds-library-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: auto;
  padding-top: 13px;
  border-top: 1px solid #eef0f2;
  color: var(--lds-muted);
  font-size: 12.5px;
}

.lds-library-read {
  color: var(--lds-green-2) !important;
  font-weight: 700;
  text-decoration: none !important;
  white-space: nowrap;
}

.lds-library-empty {
  margin: 24px 0;
  padding: 25px;
  border: 1px dashed #cbd5d0;
  border-radius: 14px;
  background: var(--lds-soft);
  color: #475467;
  text-align: center;
}

.lds-library-reader-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.lds-library-back {
  display: inline-flex;
  align-items: center;
  padding: 9px 13px;
  border: 1px solid var(--lds-border);
  border-radius: 999px;
  background: #fff;
  color: var(--lds-green) !important;
  font-weight: 700;
  text-decoration: none !important;
}

.lds-library-reader-category {
  padding: 7px 11px;
  border-radius: 999px;
  background: #e9f2ee;
  color: var(--lds-green-2);
  font-size: 12px;
  font-weight: 700;
}

.lds-library-reader-heading {
  margin-bottom: 14px;
  padding: 20px 22px;
  border-left: 4px solid var(--lds-gold);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 6px 22px rgba(16,24,40,.05);
}

.lds-library-reader-heading h1 {
  margin: 0 0 8px;
  color: var(--lds-ink);
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.2;
}

.lds-library-reader-heading p {
  margin: 9px 0 0;
  color: var(--lds-muted);
}

.lds-library-reader-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  color: #475467;
  font-size: 13px;
}

@media (max-width: 1100px) {
  .lds-library-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  .lds-library-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 15px; }
  .lds-library-tools { grid-template-columns: 1fr; }
  .lds-library-hero { align-items: flex-start; padding: 22px; }
}

@media (max-width: 520px) {
  .lds-library-shell,
  .lds-library-reader { margin: 12px auto; }
  .lds-library-hero { display: block; border-radius: 14px; }
  .lds-library-stat { display: inline-block; min-width: 92px; margin-top: 16px; padding: 12px 16px; }
  .lds-library-stat strong { font-size: 26px; }
  .lds-library-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .lds-library-card { border-radius: 12px; }
  .lds-library-card-body { padding: 11px; }
  .lds-library-card h3 { font-size: 14.5px; }
  .lds-library-category { font-size: 10px; }
  .lds-library-summary { display: none; }
  .lds-library-lecturer { font-size: 11.5px; }
  .lds-library-card-footer { display: block; font-size: 11px; }
  .lds-library-read { display: inline-block; margin-top: 6px; }
  .lds-library-reader-top { align-items: flex-start; flex-direction: column; }
}