.catalog-tools{display:flex;gap:12px;margin:18px 0 0}.catalog-tools input{flex:1;min-width:0}.catalog-tools select{width:auto;max-width:42%}.catalog-count{font-size:13px;color:var(--muted)}.catalog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}.catalog-card{padding:0;overflow:hidden;text-align:left;border-radius:18px;background:var(--surface);color:var(--text);display:flex;flex-direction:column;min-width:0}.catalog-card>img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--surface)}.catalog-card-body{padding:15px;display:grid;gap:9px}.catalog-card strong{font-size:16px;line-height:1.35;color:var(--text)}.catalog-card span span,.catalog-card small{font-size:12px;color:var(--muted)}.catalog-detail{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:22px;width:min(540px,calc(100% - 24px));max-height:90dvh;padding:22px;overflow:auto}.catalog-detail::backdrop{background:#080a16b0}.catalog-detail>img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;margin:12px 0}.catalog-detail p{white-space:pre-line}.catalog-back{min-width:44px;min-height:44px}.quiz-mode-tabs{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:700px){.catalog-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.catalog-card strong{font-size:14px}.catalog-card-body{padding:11px}.quiz-mode-tabs{grid-template-columns:repeat(2,minmax(0,1fr))}.catalog-tools{gap:8px}.catalog-tools input,.catalog-tools select{font-size:16px}}
/* Covers fill the card; the scrim guarantees readable labels in every theme. */
.catalog-grid .catalog-card{position:relative;isolation:isolate;min-height:250px;display:flex;justify-content:flex-end;background:#171526;border:1px solid var(--line);box-shadow:none}
.catalog-grid .catalog-card>img{position:absolute;inset:0;height:100%;width:100%;aspect-ratio:auto;object-fit:cover;z-index:-2}
.catalog-grid .catalog-card::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(8,10,20,.03) 15%,rgba(8,10,20,.7) 48%,rgba(8,10,20,.97) 100%)}
.catalog-grid .catalog-card-body{width:100%;padding:16px;gap:7px;background:transparent;color:#fff}
.catalog-grid .catalog-card strong{color:#fff;font-size:17px;line-height:1.3;text-shadow:0 1px 3px #000}
.catalog-grid .catalog-card-body>span,.catalog-grid .catalog-card small{color:#e6e9f2;font-size:12px;line-height:1.4}
.catalog-grid .catalog-card small{display:none}
.catalog-card:focus-visible,.quiz-mode-tabs a:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
@media(max-width:700px){.catalog-grid .catalog-card{min-height:210px}.catalog-grid .catalog-card-body{padding:12px}.catalog-grid .catalog-card strong{font-size:15px}}

.catalog-question-image{width:100%;max-height:180px;object-fit:contain}.catalog-question-audio{width:100%}.catalog-answers{display:grid;gap:10px}.catalog-answer{text-align:left;white-space:normal}