/* ────────────────────────────────────────────────────────────────────
   Catalog pages (Data + Operators) — commodities-style master tiles
   with click-to-expand inline panel
   ──────────────────────────────────────────────────────────────────── */

.catalog-page {
  --c-accent: #b11226;
  --c-accent-soft: #d94a4f;
  --c-accent-tint: rgba(177, 18, 38, 0.08);
  --c-mono: "IBM Plex Mono", ui-monospace, monospace;
  --c-serif: "Fraunces", "Times New Roman", serif;
}

/* Head — narrower than commodity-hero, no dark gradient */

.catalog-head {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(220px, 1fr);
  gap: 36px;
  padding: 38px 48px 30px;
  background:
    radial-gradient(900px 380px at 92% -20%, rgba(217, 74, 79, 0.10), transparent 65%),
    radial-gradient(700px 320px at -8% 110%, rgba(28, 29, 32, 0.05), transparent 70%),
    var(--c-paper);
  border-bottom: 1px solid var(--c-graphite-200);
  isolation: isolate;
}

.catalog-head::before {
  content: "";
  position: absolute;
  left: 48px;
  right: 48px;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-accent-soft) 18%, var(--c-graphite-300) 60%, transparent 100%);
  opacity: 0.6;
}

.catalog-head__lead { position: relative; z-index: 1; }

.catalog-head__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--c-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-graphite-500);
  padding: 6px 11px;
  border: 1px solid var(--c-graphite-300);
  border-radius: 2px;
  background: #fff;
}

.catalog-head__eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent-soft);
  box-shadow: 0 0 0 3px rgba(217, 74, 79, 0.18);
}

.catalog-head__title {
  font-family: var(--c-serif);
  font-weight: 500;
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  line-height: 1.05;
  letter-spacing: -0.022em;
  margin: 18px 0 12px;
  color: var(--c-ink);
}
.catalog-head__title em {
  font-style: italic;
  color: var(--c-accent);
  position: relative;
  padding: 0 3px;
}
.catalog-head__title em::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 8%;
  height: 30%;
  background: rgba(177, 18, 38, 0.12);
  z-index: -1;
  transform: skewX(-6deg);
}

.catalog-head__sub {
  margin: 0 0 16px;
  max-width: 60ch;
  color: var(--c-graphite-700);
  line-height: 1.55;
  font-size: 0.95rem;
}
.catalog-head__sub code {
  font-family: var(--c-mono);
  font-size: 0.85em;
  color: var(--c-accent);
  background: var(--c-accent-tint);
  padding: 1px 6px;
  border-radius: 2px;
}

.catalog-head__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* Index sidebar (jump links) */

.catalog-head__index {
  position: relative;
  z-index: 1;
  border-left: 1px dashed var(--c-graphite-300);
  padding-left: 24px;
  align-self: end;
}

.catalog-head__index-label {
  font-family: var(--c-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-graphite-500);
  display: block;
  margin-bottom: 12px;
}

.catalog-head__index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  counter-reset: catalog-jump;
}

.catalog-head__index-list a {
  font-family: var(--c-serif);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--c-graphite-700);
  text-decoration: none;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: all 160ms ease;
}
.catalog-head__index-list a::before {
  counter-increment: catalog-jump;
  content: counter(catalog-jump, upper-roman);
  font-family: var(--c-mono);
  font-style: normal;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--c-accent-soft);
  margin-right: 12px;
  font-weight: 600;
}
.catalog-head__index-list a span { color: var(--c-graphite-500); font-family: var(--c-mono); font-size: 0.78rem; font-weight: 600; font-style: normal; }
.catalog-head__index-list a:hover {
  color: var(--c-ink);
  border-bottom-color: var(--c-accent-soft);
}

/* ────────── Grid of master tiles + inline expand ────────── */

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
  padding: 22px 48px 32px;
  align-items: start;
}

.catalog-grid__loading {
  font-family: var(--c-mono);
  font-size: 0.78rem;
  color: var(--c-graphite-500);
  padding: 36px 8px;
  font-style: italic;
  grid-column: 1 / -1;
}

/* Master tile — inspired by commodities .ccard */

.dscard {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-graphite-200);
  padding: 18px 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  transition:
    transform 220ms cubic-bezier(.2, .85, .25, 1),
    border-color 160ms ease,
    box-shadow 200ms ease;
  isolation: isolate;
}

.dscard__rail {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--c-accent), var(--c-graphite-300));
  opacity: 0;
  transition: opacity 180ms ease;
}

.dscard:hover {
  transform: translateY(-3px);
  border-color: var(--c-accent-soft);
  box-shadow: 0 18px 36px -22px rgba(177, 18, 38, 0.42);
}
.dscard:hover .dscard__rail { opacity: 1; }

.dscard.is-active {
  border-color: var(--c-accent);
  box-shadow: 0 22px 44px -22px rgba(177, 18, 38, 0.55);
  transform: translateY(-2px);
}
.dscard.is-active .dscard__rail { opacity: 1; }

.dscard__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 4px;
}

.dscard__num {
  font-family: var(--c-serif);
  font-style: italic;
  font-weight: 500;
  font-size: 1.2rem;
  color: var(--c-accent);
  line-height: 1;
}

.dscard__count {
  font-family: var(--c-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-graphite-500);
  font-weight: 600;
}

.dscard__name {
  font-family: var(--c-serif);
  font-weight: 500;
  font-size: 1.18rem;
  color: var(--c-ink);
  letter-spacing: -0.01em;
  margin: 0;
  word-break: break-word;
}

.dscard__sub {
  font-family: var(--c-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--c-graphite-500);
  margin: 0;
  font-style: italic;
}

.dscard__path {
  font-family: var(--c-mono);
  font-size: 0.7rem;
  color: var(--c-graphite-700);
  background: var(--c-paper-warm);
  padding: 4px 8px;
  border-radius: 2px;
  word-break: break-all;
  display: inline-block;
  margin-top: 4px;
}

.dscard__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 10px;
  margin-top: auto;
  border-top: 1px dashed var(--c-graphite-200);
}

.dscard__hint {
  font-family: var(--c-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-graphite-400);
  transition: color 160ms ease;
}
.dscard:hover .dscard__hint,
.dscard.is-active .dscard__hint { color: var(--c-accent); }

.dscard__chevron {
  font-family: var(--c-mono);
  color: var(--c-graphite-400);
  transition: all 220ms cubic-bezier(.2, .85, .25, 1);
  font-size: 0.95rem;
}
.dscard:hover .dscard__chevron { color: var(--c-accent); transform: translateX(3px); }
.dscard.is-active .dscard__chevron { color: var(--c-accent); transform: translateX(4px); }

/* Inline expand panel — mirrors commodities .ca-expand */

.dscard-expand {
  grid-column: 1 / -1;
  background:
    radial-gradient(800px 360px at 92% -20%, rgba(217, 74, 79, 0.10), transparent 60%),
    linear-gradient(135deg, #1a1c20 0%, #0f1014 100%);
  color: rgba(255, 255, 255, 0.92);
  padding: 26px 30px 28px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 4px;
  margin-bottom: 6px;
  box-shadow: 0 30px 60px -28px rgba(28, 29, 32, 0.55);
  animation: dsExpandIn 280ms cubic-bezier(0.22, 0.61, 0.36, 1);
  isolation: isolate;
  overflow: hidden;
}

.dscard-expand[hidden] { display: none; }

.dscard-expand::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--c-accent) 0%, var(--c-accent-soft) 100%);
}

@keyframes dsExpandIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.dscard-expand__head {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.dscard-expand__lead { display: flex; flex-direction: column; gap: 4px; }

.dscard-expand__eyebrow {
  font-family: var(--c-mono);
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  color: var(--c-accent-soft);
  text-transform: uppercase;
}

.dscard-expand__title {
  margin: 0;
  font-family: var(--c-serif);
  font-style: italic;
  font-weight: 500;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  color: #fff;
}

.dscard-expand__sub {
  font-family: var(--c-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.5);
}
.dscard-expand__sub code {
  font-family: inherit;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.7);
  padding: 1px 6px;
  border-radius: 2px;
}

.dscard-expand__search {
  font-family: var(--c-mono);
  font-size: 0.84rem;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  outline: none;
  border-radius: 2px;
  letter-spacing: 0.02em;
}
.dscard-expand__search:focus {
  border-color: var(--c-accent-soft);
  box-shadow: 0 0 0 3px rgba(217, 74, 79, 0.20);
}
.dscard-expand__search::placeholder { color: rgba(255, 255, 255, 0.4); }

.dscard-expand__close {
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: transparent;
  color: rgba(255, 255, 255, 0.65);
  width: 30px;
  height: 30px;
  border-radius: 2px;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  transition: all 140ms ease;
}
.dscard-expand__close:hover {
  border-color: var(--c-accent-soft);
  color: var(--c-accent-soft);
  background: rgba(217, 74, 79, 0.12);
}

.dscard-expand__table {
  max-height: 480px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.dscard-expand__table::-webkit-scrollbar { width: 6px; }
.dscard-expand__table::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.20); border-radius: 3px; }

.dscard-row {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) minmax(0, 1.4fr) minmax(0, 2fr);
  gap: 16px;
  align-items: baseline;
  padding: 8px 4px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  cursor: pointer;
  transition: all 120ms ease;
}
.dscard-row:last-child { border-bottom: 0; }
.dscard-row:hover {
  background: rgba(217, 74, 79, 0.10);
  box-shadow: inset 3px 0 0 var(--c-accent-soft);
}

.dscard-row--empty {
  grid-template-columns: 1fr;
  cursor: default;
  opacity: 0.5;
  text-align: center;
  padding: 20px;
  font-style: italic;
}

.dscard-row__name {
  font-family: var(--c-mono);
  font-size: 0.86rem;
  font-weight: 600;
  color: #f4f0ea;
  letter-spacing: 0.02em;
}
.dscard-row__name code {
  font-family: inherit;
  font-weight: inherit;
  color: inherit;
  background: transparent;
}

.dscard-row__col {
  font-family: var(--c-mono);
  font-size: 0.78rem;
  color: rgba(244, 240, 234, 0.50);
  font-style: italic;
}

.dscard-row__desc {
  font-family: Inter, sans-serif;
  font-size: 0.82rem;
  color: rgba(244, 240, 234, 0.65);
  line-height: 1.5;
}

/* ────────── Responsive ────────── */

@media (max-width: 900px) {
  .catalog-head {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 28px 24px 24px;
  }
  .catalog-head__index {
    border-left: 0;
    border-top: 1px dashed var(--c-graphite-300);
    padding: 18px 0 0;
  }
  .catalog-head__index-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px 14px;
  }
  .catalog-grid { padding: 18px 24px 24px; gap: 12px; }
  .dscard-expand { padding: 22px 22px 24px; }
  .dscard-expand__head { grid-template-columns: 1fr; gap: 12px; }
}

@media (max-width: 600px) {
  .dscard-row { grid-template-columns: 1fr; gap: 4px; }
}