:root {
  color-scheme: dark;
  --void: #080c14;
  --deep: #0f1420;
  --nebula: #151d2e;
  --orbit: #1e283d;
  --violet: #7c3aed;
  --pulse: #a78bfa;
  --signal: #22d3ee;
  --star: #f0f4ff;
  --comet: #94a3b8;
  --line: rgba(148, 163, 184, 0.24);
  --line-strong: rgba(34, 211, 238, 0.32);
  --warn: #fcd34d;
  --shadow: 0 18px 38px rgba(0, 0, 0, 0.34);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(90deg, rgba(34, 211, 238, 0.045) 1px, transparent 1px),
    linear-gradient(0deg, rgba(167, 139, 250, 0.045) 1px, transparent 1px),
    linear-gradient(180deg, #080c14 0%, #101827 62%, #080c14 100%);
  background-size: 34px 34px;
  color: var(--star);
}

a { color: inherit; }
button, input, select { font: inherit; }

.shell {
  width: min(1500px, 100%);
  margin: 0 auto;
  padding: max(18px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(18px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
}

.topbar {
  display: grid;
  grid-template-columns: minmax(230px, 1fr) auto auto;
  gap: 16px;
  align-items: center;
  border-bottom: 1px solid var(--line-strong);
  padding: 0 0 14px;
}

.brand {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  aspect-ratio: 1;
  background: linear-gradient(135deg, var(--violet), var(--pulse), var(--signal));
  color: var(--void);
  border-radius: 8px;
  box-shadow: 6px 6px 0 rgba(34, 211, 238, 0.18);
  font-size: 1.55rem;
  font-weight: 900;
}

.brand strong {
  display: block;
  font-size: 1.2rem;
  line-height: 1;
}

.brand small, .muted, .source-strip, label, .stats dt, .meta-list dt {
  color: var(--comet);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  justify-content: flex-end;
  font-size: 0.78rem;
  font-weight: 900;
}

.site-nav a {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(21, 29, 46, 0.72);
  padding: 7px 10px;
  color: var(--star);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  border-color: var(--line-strong);
  outline: none;
}

.source-strip {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  font-size: 0.9rem;
}

.attribution-strip {
  margin-top: 12px;
  border: 1px solid rgba(246, 211, 90, 0.28);
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(246, 211, 90, 0.12), rgba(34, 211, 238, 0.06)),
    rgba(15, 20, 32, 0.86);
  color: var(--comet);
  padding: 10px 12px;
  font-size: 0.84rem;
  line-height: 1.45;
}

.attribution-strip strong {
  color: var(--warn);
}

.button,
button {
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  background: rgba(21, 29, 46, 0.88);
  color: var(--star);
  min-height: 44px;
  padding: 8px 12px;
  text-decoration: none;
  font-weight: 800;
  cursor: pointer;
}

.button,
button {
  background: var(--violet);
  color: var(--star);
}

.workbench {
  display: grid;
  grid-template-columns: minmax(280px, 360px) minmax(420px, 1fr) minmax(280px, 380px);
  gap: 16px;
  padding-top: 18px;
  align-items: start;
}

.hud-column {
  display: contents;
}

.search-panel,
.results-panel,
.detail-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(15, 20, 32, 0.92);
  box-shadow: var(--shadow);
}

.search-panel,
.detail-panel {
  padding: 16px;
  position: sticky;
  top: 14px;
}

.search-panel {
  grid-column: 1;
  grid-row: 1;
}

.results-panel {
  grid-column: 2;
  grid-row: 1;
}

.detail-panel {
  grid-column: 3;
  grid-row: 1;
}

.kicker {
  margin: 0 0 6px;
  color: var(--signal);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }
h1 {
  margin-bottom: 0;
  font-size: clamp(2rem, 4vw, 3.8rem);
  line-height: 0.95;
}

h2 { font-size: clamp(1.25rem, 2.4vw, 1.8rem); }
h3 { margin-bottom: 6px; font-size: 1rem; line-height: 1.15; }

.controls {
  display: grid;
  gap: 10px;
}

.universal-search {
  display: grid;
  gap: 8px;
}

.search-label {
  color: var(--star);
  font-size: 0.78rem;
  font-weight: 950;
  text-transform: uppercase;
}

.search-box {
  position: relative;
}

.search-box input {
  border-color: var(--line-strong);
  padding-left: 44px;
}

.search-icon {
  position: absolute;
  left: 15px;
  top: 50%;
  width: 15px;
  aspect-ratio: 1;
  border: 2px solid var(--signal);
  border-radius: 50%;
  pointer-events: none;
  transform: translateY(-56%);
}

.search-icon::after {
  content: "";
  position: absolute;
  right: -7px;
  bottom: -4px;
  width: 8px;
  height: 2px;
  border-radius: 2px;
  background: var(--signal);
  transform: rotate(45deg);
}

.filter-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(34, 211, 238, 0.12);
  border-color: rgba(34, 211, 238, 0.42);
}

.filter-toggle::after {
  content: "";
  width: 9px;
  aspect-ratio: 1;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
}

.filter-toggle[aria-expanded="true"]::after {
  transform: rotate(225deg) translate(-2px, -1px);
}

.advanced-filters {
  display: grid;
  gap: 10px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 850;
}

input, select {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(8, 12, 20, 0.88);
  color: var(--star);
  padding: 9px 10px;
}

input:focus-visible,
select:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(34, 211, 238, 0.62);
  outline-offset: 2px;
}

.control-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.advanced-filters .control-grid label:last-child {
  grid-column: 1 / -1;
}

.stats,
.meta-list {
  display: grid;
  gap: 8px;
  margin: 16px 0 0;
}

.stats div,
.meta-list div {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 10px;
  border-top: 1px solid var(--line);
  padding-top: 8px;
}

.stats dt,
.meta-list dt {
  font-size: 0.74rem;
  font-weight: 900;
  text-transform: uppercase;
}

.stats dd,
.meta-list dd {
  margin: 0;
  overflow-wrap: anywhere;
  font-weight: 800;
}

.results-panel {
  overflow: hidden;
}

.results-head {
  display: flex;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--line);
}

.results-list {
  display: grid;
}

.book-row {
  display: grid;
  grid-template-columns: 58px 1fr auto;
  gap: 12px;
  align-items: center;
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  color: var(--star);
  padding: 12px 16px;
  text-align: left;
  cursor: pointer;
  min-height: 74px;
}

.book-row:hover,
.book-row:focus-visible,
.book-row.active {
  background: rgba(34, 211, 238, 0.1);
  outline: 0;
}

.book-cover {
  display: grid;
  place-items: center;
  position: relative;
  width: 58px;
  aspect-ratio: 5 / 7;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: linear-gradient(145deg, var(--violet), var(--signal));
  color: var(--void);
  font-size: 1.25rem;
  font-weight: 900;
  box-shadow: 4px 4px 0 rgba(167, 139, 250, 0.2);
}

.cover-thumb-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  pointer-events: none;
}

.cover-thumb-image.is-loaded {
  opacity: 1;
}

.cover-thumb-fallback {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.book-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  color: var(--comet);
  font-size: 0.83rem;
}

.book-id {
  color: var(--pulse);
  font-size: 0.84rem;
  font-weight: 900;
}

.detail-top {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  justify-content: space-between;
}

.detail-panel h2 {
  margin-bottom: 0;
  line-height: 1.05;
}

.detail-close {
  display: none;
}

.detail-book {
  display: grid;
  grid-template-columns: 104px 1fr;
  gap: 12px;
  align-items: start;
  margin-top: 14px;
}

.detail-cover-frame {
  display: grid;
  place-items: center;
  width: 104px;
  aspect-ratio: 2 / 3;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background:
    linear-gradient(145deg, rgba(124, 58, 237, 0.86), rgba(34, 211, 238, 0.86)),
    var(--nebula);
  box-shadow: 5px 5px 0 rgba(34, 211, 238, 0.15);
}

.detail-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.detail-cover-fallback {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  color: var(--void);
  font-size: 2.3rem;
  font-weight: 950;
}

.detail-copy {
  min-width: 0;
}

.tags {
  display: flex;
  gap: 7px;
  flex-wrap: wrap;
  margin: 14px 0;
}

.tag {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(8, 12, 20, 0.78);
  padding: 5px 8px;
  color: var(--signal);
  font-size: 0.78rem;
  font-weight: 850;
}

.detail-actions {
  display: grid;
  gap: 8px;
  margin: 14px 0;
}

.format-buttons {
  display: grid;
  gap: 8px;
}

.mobile-detail-card {
  display: none;
}

.format-button {
  min-height: 44px;
  padding: 10px 12px;
  text-align: center;
  overflow-wrap: anywhere;
  line-height: 1.15;
}

.primary-action {
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--violet), var(--pulse));
  border-color: rgba(167, 139, 250, 0.62);
}

.secondary-action {
  display: grid;
  place-items: center;
  background: rgba(34, 211, 238, 0.12);
  border-color: rgba(34, 211, 238, 0.46);
}

.quiet-link {
  color: var(--comet);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  font-weight: 800;
}

.empty {
  padding: 28px 16px;
  color: var(--comet);
}

@media (max-width: 1180px) {
  .topbar {
    grid-template-columns: minmax(230px, 1fr) auto;
  }

  .site-nav {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }

  .workbench {
    grid-template-columns: minmax(260px, 340px) minmax(0, 1fr);
  }

  .hud-column {
    display: grid;
    grid-column: 1;
    grid-row: 1;
    gap: 16px;
    position: sticky;
    top: 14px;
    max-height: calc(100vh - 28px);
    overflow: auto;
    align-self: start;
  }

  .hud-column .search-panel,
  .hud-column .detail-panel {
    grid-column: 1;
    grid-row: auto;
    position: static;
  }

  .hud-column .search-panel,
  .hud-column .detail-panel {
    padding: 12px;
  }

  .hud-column .controls,
  .hud-column .advanced-filters {
    gap: 8px;
  }

  .hud-column label {
    gap: 4px;
    font-size: 0.78rem;
  }

  .hud-column input,
  .hud-column select,
  .hud-column button {
    min-height: 40px;
  }

  .hud-column input,
  .hud-column select {
    padding: 7px 9px;
  }

  .hud-column .search-box input {
    padding-left: 42px;
  }

  .search-panel .stats {
    display: none;
  }

  .results-panel {
    grid-column: 2;
    grid-row: 1;
  }

  .detail-panel .kicker {
    margin-bottom: 8px;
  }

  .detail-panel h2 {
    font-size: 1rem;
  }

  .detail-book {
    grid-template-columns: 78px 1fr;
    gap: 10px;
  }

  .detail-cover-frame {
    width: 78px;
  }

  .detail-cover-fallback {
    font-size: 1.75rem;
  }

  .detail-panel .tags,
  .detail-panel .meta-list {
    display: none;
  }

  .detail-actions {
    margin-bottom: 0;
  }
}

@media (max-width: 760px) {
  .shell { padding: 10px; }

  .topbar,
  .workbench {
    grid-template-columns: 1fr;
  }

  .hud-column {
    display: grid;
    grid-column: 1;
    grid-row: 1;
    gap: 10px;
    position: static;
    max-height: none;
    overflow: visible;
  }

  .topbar {
    gap: 8px;
    padding-bottom: 8px;
  }

  .brand {
    gap: 10px;
  }

  .brand-mark {
    width: 40px;
    font-size: 1.3rem;
    box-shadow: 4px 4px 0 rgba(34, 211, 238, 0.16);
  }

  .brand small {
    display: none;
  }

  .site-nav {
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 2px;
    flex-wrap: nowrap;
  }

  .site-nav a {
    min-height: 34px;
    padding: 6px 9px;
    white-space: nowrap;
  }

  .source-strip {
    justify-content: flex-start;
    font-size: 0.78rem;
  }

  .attribution-strip {
    margin-top: 8px;
    padding: 9px 10px;
    font-size: 0.78rem;
  }

  .workbench {
    gap: 10px;
    padding-top: 10px;
  }

  .search-panel {
    position: sticky;
    z-index: 5;
    top: max(8px, env(safe-area-inset-top));
    padding: 10px;
    border-color: var(--line-strong);
    background: rgba(10, 15, 25, 0.97);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.42);
  }

  .search-panel .stats {
    display: none;
  }

  .controls {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .list-field,
  .advanced-filters {
    min-width: 0;
  }

  .advanced-filters .control-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .advanced-filters .control-grid label:last-child {
    grid-column: 1 / -1;
  }

  label {
    gap: 4px;
    font-size: 0.76rem;
  }

  input,
  select {
    min-height: 42px;
    padding: 8px 9px;
  }

  .search-box input {
    padding-left: 42px;
  }

  .search-panel {
    grid-column: 1;
    grid-row: 1;
    order: 1;
  }

  .results-panel {
    grid-column: 1;
    grid-row: 2;
    order: 2;
  }

  .detail-panel {
    grid-column: 1;
    grid-row: 3;
    order: 3;
    display: none;
  }

  .mobile-detail-card {
    display: grid;
    gap: 10px;
    padding: 12px;
    border-bottom: 1px solid var(--line-strong);
    background:
      linear-gradient(90deg, rgba(34, 211, 238, 0.18), transparent 46%),
      rgba(8, 12, 20, 0.96);
    box-shadow: inset 3px 0 0 var(--signal);
  }

  .mobile-detail-head {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 10px;
    align-items: start;
  }

  .mobile-detail-cover {
    display: grid;
    place-items: center;
    position: relative;
    width: 48px;
    aspect-ratio: 5 / 7;
    overflow: hidden;
    border: 1px solid var(--line-strong);
    border-radius: 4px;
    background: linear-gradient(145deg, var(--violet), var(--signal));
    color: var(--void);
    font-size: 1.15rem;
    font-weight: 950;
    box-shadow: 4px 4px 0 rgba(167, 139, 250, 0.16);
  }

  .mobile-detail-card h3 {
    margin-bottom: 4px;
    font-size: 1rem;
  }

  .mobile-detail-card .muted {
    margin-bottom: 0;
    font-size: 0.82rem;
  }

  .mobile-detail-card .tags {
    max-height: 68px;
    overflow: hidden;
    margin: 0;
  }

  .mobile-format-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .mobile-format-buttons .format-button {
    min-height: 40px;
    padding: 8px;
    font-size: 0.78rem;
  }

  .mobile-format-buttons .format-button:first-child {
    grid-column: 1 / -1;
  }

  .mobile-card-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .mobile-card-links .button,
  .mobile-card-links .quiet-link {
    min-height: 40px;
    text-align: center;
    overflow-wrap: anywhere;
  }

  .mobile-card-links .quiet-link {
    display: grid;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: rgba(21, 29, 46, 0.78);
    padding: 8px;
  }

  body.detail-modal-open {
    overflow: hidden;
  }

  .detail-panel.is-open {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 30;
    overflow: auto;
    border: 0;
    border-radius: 0;
    background:
      linear-gradient(90deg, rgba(34, 211, 238, 0.05) 1px, transparent 1px),
      linear-gradient(0deg, rgba(167, 139, 250, 0.05) 1px, transparent 1px),
      linear-gradient(180deg, #080c14, #0f1420);
    background-size: 30px 30px;
    box-shadow: none;
    padding: max(14px, env(safe-area-inset-top)) max(14px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left));
  }

  .detail-panel.is-open .detail-top {
    position: sticky;
    top: 0;
    z-index: 2;
    align-items: center;
    margin: -14px -14px 0;
    padding: 14px;
    border-bottom: 1px solid var(--line);
    background: #080c14;
    backdrop-filter: blur(10px);
  }

  .detail-close {
    display: grid;
    place-items: center;
    width: 44px;
    min-height: 44px;
    padding: 0;
    flex: 0 0 auto;
    background: rgba(34, 211, 238, 0.16);
    border-color: rgba(34, 211, 238, 0.5);
  }

  .detail-book {
    grid-template-columns: 92px 1fr;
    gap: 12px;
  }

  .detail-cover-frame {
    width: 92px;
  }

  .detail-panel .tags {
    max-height: 112px;
    overflow: hidden;
  }

  .format-buttons {
    grid-template-columns: 1fr;
  }

  .book-row {
    grid-template-columns: 48px 1fr;
    gap: 10px;
    min-height: 0;
    padding: 10px 12px;
  }

  .book-cover {
    width: 48px;
  }

  .book-id {
    grid-column: 2;
    font-size: 0.76rem;
  }
}