/* Alexandria Digital — Etapa 3: Biblioteca */
.stage3-main{min-height:68vh}.stage3-hero{background:linear-gradient(135deg,#2a1a10,#4a311d);color:#fff7e8;padding:clamp(3rem,7vw,5.5rem) 0;position:relative;overflow:hidden}.stage3-hero:after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 10%,#d1a14b2e,transparent 24rem);pointer-events:none}.stage3-hero .ad-container{position:relative;z-index:1}.stage3-eyebrow{margin:0 0 .5rem;color:#d8b66b;text-transform:uppercase;letter-spacing:.16em;font-size:.78rem;font-weight:800}.stage3-hero h1,.category-hero h1{font-family:var(--ad-font-display);font-size:clamp(2.5rem,7vw,5rem);font-weight:400;line-height:1.02;letter-spacing:-.03em;margin:0}.stage3-lead{max-width:44rem;margin:1rem 0 0;color:#ead9bd;font-family:var(--ad-font-display);font-size:clamp(1rem,2vw,1.25rem);line-height:1.6}.stage3-search{margin-top:1.6rem;max-width:42rem}.stage3-search form{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:.7rem;background:#fffdf8;border:1px solid #dfccac;border-radius:999px;padding:.35rem .35rem .35rem 1rem;box-shadow:0 .8rem 2.3rem #170e0833;color:#2d251f}.stage3-search input{border:0;background:transparent;outline:0;min-width:0;width:100%;font-family:var(--ad-font-display);font-size:1rem}.stage3-search button{border:0;border-radius:999px;background:linear-gradient(135deg,#b48334,#cfa44c);color:#2d1b0d;font-family:var(--ad-font-display);font-weight:700;padding:.8rem 1.4rem}.stage3-search .search-symbol{font-size:1.4rem}.stage3-section{padding:clamp(2.4rem,6vw,4.5rem) 0}.stage3-section+.stage3-section{border-top:1px solid #cfbb9a52}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:1rem;margin-bottom:1.25rem}.section-heading h2{font-family:var(--ad-font-display);font-size:clamp(1.7rem,4vw,2.6rem);font-weight:500;line-height:1.08;margin:0}.section-heading p{color:var(--ad-text-soft);margin:.35rem 0 0;max-width:48rem}.section-heading a{color:var(--ad-accent-strong);font-family:var(--ad-font-display);white-space:nowrap}.popular-category-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem}.popular-category{border:1px solid var(--ad-border);border-radius:.65rem;background:linear-gradient(145deg,#fffaf0,#f1e3cb);min-height:9.5rem;padding:1.1rem;display:grid;align-content:space-between;box-shadow:var(--ad-shadow-sm);transition:transform var(--ad-duration) var(--ad-ease),box-shadow var(--ad-duration) var(--ad-ease)}.popular-category:hover{transform:translateY(-3px);box-shadow:var(--ad-shadow-md)}.popular-category .category-icon{font-size:2rem;color:#855e2d}.popular-category strong{font-family:var(--ad-font-display);font-size:1.2rem}.popular-category small{color:var(--ad-text-soft)}
.shelf-row{display:flex;gap:1rem;overflow-x:auto;padding:.35rem .2rem 1.25rem;scroll-snap-type:x proximity}.shelf-row .catalog-book{flex:0 0 min(72vw,14rem);scroll-snap-align:start}.catalog-layout{display:grid;grid-template-columns:1fr;gap:1.25rem}.filter-panel{border:1px solid var(--ad-border);border-radius:.75rem;background:var(--ad-surface);padding:1rem;box-shadow:var(--ad-shadow-sm);align-content:start}.filter-panel h2{font-family:var(--ad-font-display);font-size:1.35rem;font-weight:500;margin:0 0 .8rem}.filter-grid{display:grid;grid-template-columns:1fr;gap:.75rem}.filter-field{display:grid;gap:.35rem}.filter-field label{font-size:.78rem;font-weight:700;color:var(--ad-text-soft);text-transform:uppercase;letter-spacing:.08em}.filter-field select,.filter-field input{width:100%;border:1px solid var(--ad-border);border-radius:.45rem;background:var(--ad-bg);color:var(--ad-text);padding:.72rem .75rem;outline:none}.filter-field select:focus,.filter-field input:focus{border-color:var(--ad-accent)}.filter-actions{display:flex;gap:.65rem;margin-top:.9rem}.filter-reset{border:1px solid var(--ad-border);border-radius:999px;background:transparent;color:var(--ad-text);padding:.65rem 1rem}.filter-chips{display:flex;gap:.5rem;overflow-x:auto;padding:.2rem 0 .85rem;margin-bottom:.6rem}.filter-chip{border:1px solid var(--ad-border);border-radius:999px;background:var(--ad-surface);color:var(--ad-text);white-space:nowrap;padding:.6rem .85rem}.filter-chip.active,.filter-chip[aria-pressed=true]{background:#3b2819;color:#fff3dc;border-color:#3b2819}.catalog-area{min-width:0}.catalog-toolbar{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1rem}.catalog-count{color:var(--ad-text-soft);font-size:.9rem}.catalog-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.catalog-book{min-width:0}.catalog-book[hidden]{display:none}.catalog-book-link{display:block}.catalog-cover{aspect-ratio:2/3;position:relative;overflow:hidden;border-radius:.28rem .5rem .5rem .28rem;padding:1rem .75rem;display:grid;align-content:space-between;justify-items:center;text-align:center;color:var(--cover-fg);background:var(--cover-bg);box-shadow:.4rem .55rem 1.1rem #2b1c112f,inset .25rem 0 .35rem #00000029;transition:transform var(--ad-duration) var(--ad-ease)}.catalog-book:hover .catalog-cover{transform:translateY(-4px)}.cover-border{position:absolute;inset:.45rem;border:1px solid currentColor;opacity:.48}.cover-border:after{content:"";position:absolute;inset:.35rem;border:1px solid currentColor;opacity:.45}.cover-kicker{font-family:var(--ad-font-display);font-size:.7rem}.catalog-cover>strong{font-family:var(--ad-font-display);text-transform:uppercase;letter-spacing:.025em;font-size:clamp(.82rem,2vw,1.05rem);line-height:1.2;z-index:1}.cover-seal{border:1px solid currentColor;border-radius:50%;width:3rem;height:3rem;display:grid;place-items:center;opacity:.75}.catalog-cover small{font-family:var(--ad-font-display);font-size:.66rem;opacity:.85;z-index:1}.cover-parchment{--cover-bg:linear-gradient(145deg,#ead8b6,#c6a573);--cover-fg:#3c2b1f}.cover-navy{--cover-bg:linear-gradient(145deg,#172535,#0a1119);--cover-fg:#d4ae61}.cover-green{--cover-bg:linear-gradient(145deg,#204d31,#0d2718);--cover-fg:#d7b56d}.cover-brown{--cover-bg:linear-gradient(145deg,#5f3a22,#2d1b11);--cover-fg:#e0bc78}.cover-charcoal{--cover-bg:linear-gradient(145deg,#403426,#1d1712);--cover-fg:#dfbc77}.cover-burgundy{--cover-bg:linear-gradient(145deg,#6a2924,#321210);--cover-fg:#e5bd78}.catalog-book-copy{padding:.75rem .15rem .1rem}.catalog-label{color:var(--ad-accent-strong);font-size:.68rem;text-transform:uppercase;letter-spacing:.1em;font-weight:800}.catalog-book-copy h3{font-family:var(--ad-font-display);font-size:1.05rem;line-height:1.2;margin:.2rem 0}.catalog-book-copy p{color:var(--ad-text-soft);margin:0;font-size:.84rem}.catalog-book-copy small{display:block;color:var(--ad-text-soft);margin-top:.25rem;font-size:.72rem}.empty-state{border:1px dashed var(--ad-border);border-radius:.75rem;background:var(--ad-surface);padding:2rem;text-align:center}.empty-state[hidden]{display:none}.empty-state strong{font-family:var(--ad-font-display);font-size:1.35rem;display:block}.empty-state p{color:var(--ad-text-soft);margin:.4rem 0 0}.stage3-ad{border:1px solid var(--ad-border);border-radius:.5rem;background:color-mix(in srgb,var(--ad-surface) 88%,transparent);min-height:5rem;display:flex;justify-content:center;align-items:center;gap:.75rem;flex-wrap:wrap;text-align:center;padding:1rem}.stage3-ad small{color:var(--ad-text-soft)}.stage3-ad strong{font-family:var(--ad-font-display);color:var(--ad-text)}
.category-hero{padding:clamp(2.8rem,7vw,5rem) 0;background:linear-gradient(135deg,#f5ead7,#fffaf0);border-bottom:1px solid var(--ad-border);position:relative;overflow:hidden}.category-hero:after{content:attr(data-icon);position:absolute;right:5vw;top:50%;transform:translateY(-50%);font-size:clamp(6rem,18vw,14rem);opacity:.055}.category-hero .breadcrumb{font-size:.82rem;color:var(--ad-text-soft);margin-bottom:1rem}.category-hero .category-meta{display:flex;gap:.65rem;align-items:center;flex-wrap:wrap;margin-top:1rem;color:var(--ad-text-soft)}.category-hero .pill{border:1px solid var(--ad-border);border-radius:999px;padding:.4rem .7rem;background:#fff8eb}.category-description{max-width:48rem;font-family:var(--ad-font-display);font-size:1.08rem;color:var(--ad-text-soft);margin:1rem 0 0;line-height:1.65}.category-list-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.9rem}.category-index-card{border:1px solid var(--ad-border);border-radius:.75rem;background:linear-gradient(145deg,#fffaf0,#f1e3cb);padding:1.2rem;min-height:11rem;display:grid;align-content:space-between;box-shadow:var(--ad-shadow-sm)}.category-index-card .category-icon{font-size:2.2rem;color:#80572a}.category-index-card h2{font-family:var(--ad-font-display);font-size:1.35rem;margin:.5rem 0 .2rem}.category-index-card p{color:var(--ad-text-soft);font-size:.85rem;margin:0}.category-index-card small{color:var(--ad-accent-strong);margin-top:.75rem}
.search-stage{padding:clamp(2.6rem,7vw,5rem) 0}.search-stage h1{font-family:var(--ad-font-display);font-size:clamp(2.4rem,6vw,4.6rem);font-weight:400;line-height:1.04;margin:0;max-width:14ch}.search-stage .stage3-search{margin-top:1.4rem}.search-type-tabs{display:flex;gap:.55rem;overflow-x:auto;margin:1.4rem 0 1rem}.search-type-tab{border:1px solid var(--ad-border);border-radius:999px;background:var(--ad-surface);color:var(--ad-text);padding:.62rem .9rem;white-space:nowrap}.search-type-tab.active{background:#3b2819;color:#fff3dc;border-color:#3b2819}.suggestions{position:relative;max-width:42rem}.suggestion-list{position:absolute;z-index:20;top:.55rem;left:0;right:0;background:var(--ad-surface);border:1px solid var(--ad-border);border-radius:.6rem;box-shadow:var(--ad-shadow-md);padding:.4rem;display:grid}.suggestion-list[hidden]{display:none}.suggestion-list a{padding:.7rem .8rem;border-radius:.4rem;display:flex;justify-content:space-between;gap:1rem}.suggestion-list a:hover{background:var(--ad-bg-soft)}.suggestion-list small{color:var(--ad-text-soft)}.search-results{display:grid;grid-template-columns:1fr;gap:.8rem}.search-result-card{border:1px solid var(--ad-border);border-radius:.6rem;background:var(--ad-surface);padding:1rem;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:.85rem}.search-result-card[hidden]{display:none}.search-result-icon{width:2.6rem;height:2.6rem;border-radius:50%;display:grid;place-items:center;background:var(--ad-bg-soft);color:var(--ad-accent-strong)}.search-result-card span{font-size:.66rem;text-transform:uppercase;letter-spacing:.1em;color:var(--ad-accent-strong);font-weight:800}.search-result-card strong{display:block;font-family:var(--ad-font-display);font-size:1.1rem}.search-result-card small{color:var(--ad-text-soft)}.search-status{color:var(--ad-text-soft);margin:.8rem 0 1rem}.result-arrow{color:var(--ad-accent-strong);font-size:1.25rem}
@media (min-width:44rem){.popular-category-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.catalog-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.filter-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.category-list-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.search-results{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:62rem){.catalog-layout{grid-template-columns:17rem minmax(0,1fr);align-items:start}.filter-panel{position:sticky;top:calc(var(--ad-header-height) + 1rem)}.catalog-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.popular-category-grid{grid-template-columns:repeat(8,minmax(0,1fr))}.popular-category{min-height:8.5rem;padding:1rem}.shelf-row .catalog-book{flex-basis:11.5rem}.filter-grid{grid-template-columns:1fr}}
@media (max-width:36rem){.section-heading{align-items:start}.section-heading>a{display:none}.stage3-search button{padding-inline:1rem}.catalog-grid{gap:.8rem}.catalog-cover{padding:.8rem .55rem}.catalog-book-copy h3{font-size:.95rem}.catalog-book-copy p{font-size:.78rem}.category-index-card{min-height:9.5rem;padding:1rem}.search-result-card{grid-template-columns:auto 1fr}.result-arrow{display:none}}
@media (prefers-reduced-motion:reduce){.catalog-book:hover .catalog-cover,.popular-category:hover{transform:none}}