.library-section {
  position: relative;
  padding: 26px 0 112px;
}

.library-section::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(115, 231, 210, 0.5), rgba(255, 120, 87, 0.34), transparent);
  pointer-events: none;
}

.section-heading {
  align-items: end;
  border-top: 0;
  padding-top: 24px;
  margin-bottom: 30px;
}

.section-title-wrap h2 {
  font-weight: 700;
}

.section-meta {
  gap: 14px;
}

.search-box {
  width: 240px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  padding: 10px 12px;
  box-shadow: 0 8px 26px rgba(0, 0, 0, 0.16);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.search-box:focus-within {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(115, 231, 210, 0.14);
}

.filter-rail {
  max-height: min(560px, calc(100vh - 150px));
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--cyan) rgba(115, 231, 210, 0.08);
  scrollbar-gutter: auto;
  border-right: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(115, 231, 210, 0.05), transparent 46%);
  padding: 18px 14px 18px 18px;
  transition: width 260ms ease, padding 260ms ease, border-radius 260ms ease;
}

.filter-rail::-webkit-scrollbar {
  width: 8px;
}

.filter-rail::-webkit-scrollbar-track {
  background: rgba(115, 231, 210, 0.06);
  border-radius: 999px;
}

.filter-rail::-webkit-scrollbar-thumb {
  background: rgba(115, 231, 210, 0.44);
  border: 2px solid rgba(115, 231, 210, 0.06);
  border-radius: 999px;
  background-clip: content-box;
}

.filter-rail::-webkit-scrollbar-thumb:hover {
  background: var(--cyan);
  border: 2px solid transparent;
  background-clip: content-box;
}

.filter-rail-head {
  display: block;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.filter-rail-head-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--ink);
  padding: 0;
  cursor: pointer;
}

.filter-rail-head-button:hover .filter-rail-head-title {
  color: var(--cyan);
}

.filter-rail-head-title {
  font: 700 17px Orbitron, sans-serif;
  letter-spacing: -0.03em;
  transition: color 160ms ease;
}

.filter-rail-head-button svg {
  width: 16px;
  height: 16px;
  color: var(--cyan);
  transition: transform 260ms ease;
}

.filter-rail-body {
  display: grid;
  gap: 0;
}

.filter-rail.is-collapsed {
  padding: 12px 6px;
  overflow: visible;
}

.filter-rail.is-collapsed .filter-rail-head {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: 0;
}

.filter-rail.is-collapsed .filter-rail-head-button {
  flex-direction: column;
  gap: 12px;
}

.filter-rail.is-collapsed .filter-rail-head-title {
  writing-mode: vertical-rl;
  font-size: 14px;
  letter-spacing: 0.18em;
}

.filter-rail.is-collapsed .filter-rail-head-button svg {
  transform: rotate(180deg);
}

.filter-rail.is-collapsed .filter-rail-body {
  display: none;
}

.library-layout.has-collapsed-filter {
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
}

.filter-block {
  margin-bottom: 24px;
}

.filter-label {
  color: var(--cyan);
  font-size: 10px;
  letter-spacing: 0.14em;
  margin-bottom: 10px;
}

.filter-chip {
  border-radius: 6px;
  padding: 8px 10px;
  margin-bottom: 2px;
  transition: color 150ms ease, background 150ms ease, transform 150ms ease;
}

.filter-chip:hover {
  background: rgba(115, 231, 210, 0.07);
  color: var(--ink);
  transform: translateX(2px);
}

.filter-chip.is-selected {
  background: rgba(115, 231, 210, 0.12);
  color: var(--ink);
}

.filter-chip.is-selected::before {
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(115, 231, 210, 0.7);
  margin-right: 0;
}

.game-grid {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
  gap: 22px;
}

.game-card {
  position: relative;
  border-radius: 8px;
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--line);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
  transition: border-color 220ms ease, box-shadow 220ms ease, transform 220ms ease;
}

.game-card:hover {
  border-color: rgba(115, 231, 210, 0.58);
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.34);
  transform: translateY(-4px);
}

.game-cover-link {
  position: relative;
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--surface-2);
}

.game-cover {
  filter: saturate(0.82) contrast(1.05);
  transform: scale(1.01);
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1), filter 400ms ease;
}

.game-cover-link::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 11, 16, 0.08), transparent 38%, rgba(7, 11, 16, 0.44));
  pointer-events: none;
}

.game-cover-link:hover .game-cover,
.game-cover-link:focus-visible .game-cover {
  transform: scale(1.07);
  filter: saturate(1) contrast(1.07);
}

.game-number,
.game-type,
.game-platform {
  border-radius: 4px;
  backdrop-filter: blur(8px);
}

.game-number {
  color: var(--ink);
  background: rgba(7, 11, 16, 0.78);
  padding: 6px 8px;
}

.game-type {
  color: var(--ink);
  background: rgba(7, 11, 16, 0.78);
  padding: 6px 8px;
}

.game-platform {
  color: #0b0e0f;
  background: var(--lime);
  padding: 6px 8px;
  font-weight: 700;
}

.cover-open {
  right: 14px;
  bottom: 14px;
  border-radius: 5px;
  background: rgba(7, 11, 16, 0.86);
  padding: 9px 11px;
}

.game-card-body {
  padding: 16px;
}

.game-card-meta {
  margin-bottom: 10px;
}

.record-status {
  color: var(--pink);
}

.game-card h3 {
  margin-bottom: 8px;
  font-size: 17px;
  letter-spacing: -0.035em;
}

.game-card p {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  margin-bottom: 13px;
  font-size: 12px;
  line-height: 1.65;
}

.tag {
  border-radius: 999px;
  background: rgba(115, 231, 210, 0.05);
  padding: 4px 9px;
}

.pagination {
  gap: 8px;
  margin-top: 40px;
  padding-top: 20px;
}

.page-button {
  border-radius: 6px;
  transition: color 160ms ease, border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.page-button:hover:not(:disabled),
.page-button.is-selected {
  color: #0b0e0f;
  border-color: var(--cyan);
  background: var(--cyan);
}

.page-button:not(:disabled):hover {
  transform: translateY(-1px);
}

.empty-state {
  border-radius: 8px;
  background: var(--surface);
}

@media (max-width: 860px) {
  .filter-rail {
    display: none;
    position: static;
    max-height: none;
    overflow-y: auto;
    border-radius: 0;
    border-right: 0;
    border-left: 0;
    padding: 14px 0 12px;
    margin-bottom: 24px;
    grid-template-columns: 1fr 1fr;
    column-gap: 22px;
  }

  .filter-rail.is-open {
    display: grid;
  }

  .filter-rail.is-collapsed {
    display: none;
  }

  .filter-rail.is-open.is-collapsed {
    display: block;
  }

  .library-layout.has-collapsed-filter {
    grid-template-columns: 1fr;
  }

  .game-grid {
    gap: 18px;
  }
}

@media (max-width: 600px) {
  .library-section {
    padding-bottom: 76px;
  }

  .game-grid {
    grid-template-columns: 1fr;
  }

  .search-box {
    width: min(210px, 64vw);
  }
}