.mundopdf-library{--mpl-blue:#0b3476;--mpl-blue2:#0877b8;position:relative;overflow:hidden;border-radius:8px;padding:34px 28px 42px;background:radial-gradient(circle at 20% 15%,rgba(35,142,205,.5),transparent 34%),linear-gradient(135deg,#092d68 0%,#0b397d 48%,#087bb6 100%);color:#fff}
.mundopdf-library:before,.mundopdf-library:after{content:"";position:absolute;inset:-20%;pointer-events:none;opacity:.12;background:linear-gradient(62deg,transparent 45%,#fff 46%,transparent 47%);transform:rotate(-8deg)}
.mundopdf-library:after{transform:rotate(28deg);opacity:.07}.mpl-head{position:relative;z-index:1;text-align:center;margin:0 auto 28px}.mpl-head h2{color:#fff;margin:0;font-size:clamp(1.5rem,3vw,2.35rem);font-weight:700}.mpl-head p{margin:.45rem 0 0;color:rgba(255,255,255,.82)}
.mpl-shelf{position:relative;z-index:1;display:grid;grid-template-columns:repeat(var(--mpl-cols,5),minmax(0,1fr));gap:26px 24px;padding:10px 18px 28px;margin-bottom:18px}.mpl-shelf:after{content:"";position:absolute;left:0;right:0;bottom:7px;height:15px;border-radius:2px;background:linear-gradient(#a96d32,#70421d);box-shadow:0 8px 12px rgba(0,0,0,.35)}
.mpl-book{appearance:none;border:0;background:none;color:inherit;padding:0;min-width:0;cursor:pointer;text-align:center;position:relative;z-index:2}.mpl-cover-wrap{height:210px;display:flex;align-items:flex-end;justify-content:center;perspective:700px}.mpl-cover{display:block;max-width:100%;max-height:200px;width:auto;height:auto;background:#fff;box-shadow:7px 9px 14px rgba(0,0,0,.38);transform:rotateY(-3deg);transform-origin:left center;transition:transform .2s ease,box-shadow .2s ease}.mpl-book:hover .mpl-cover,.mpl-book:focus-visible .mpl-cover{transform:translateY(-7px) rotateY(-5deg);box-shadow:10px 14px 18px rgba(0,0,0,.42)}.mpl-book-title{display:block;margin-top:14px;font-weight:650;line-height:1.25;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.35);overflow-wrap:anywhere}.mpl-book.is-active .mpl-book-title{text-decoration:underline;text-underline-offset:4px}.mpl-cover-loading{width:138px;height:190px;background:linear-gradient(110deg,#eef2f7 30%,#fff 45%,#eef2f7 60%);background-size:220% 100%;animation:mplShimmer 1.4s linear infinite;box-shadow:7px 9px 14px rgba(0,0,0,.3)}@keyframes mplShimmer{to{background-position:-220% 0}}
.mpl-viewer{margin-top:24px;position:relative;z-index:2}.mpl-viewer[hidden]{display:none}.mpl-viewer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#08295c;color:#fff;padding:10px 14px;border-radius:7px 7px 0 0}.mpl-viewer-title{font-weight:700}.mpl-viewer-close{border:0;background:rgba(255,255,255,.12);color:#fff;width:38px;height:38px;border-radius:6px;font-size:24px;cursor:pointer}.mpl-viewer iframe{display:block;width:100%;border:0;background:#fff}.mpl-modal{position:fixed;inset:0;z-index:10050;background:rgba(2,14,38,.82);padding:4vh 4vw;display:flex;align-items:center;justify-content:center}.mpl-modal[hidden]{display:none}.mpl-modal-box{width:min(1200px,96vw);max-height:92vh}.mpl-modal .mpl-viewer-head{border-radius:7px 7px 0 0}.mpl-modal iframe{width:100%;height:82vh;border:0;display:block;background:#fff}
@media(max-width:900px){.mpl-shelf{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px 14px}.mpl-cover-wrap{height:180px}.mpl-cover{max-height:170px}}@media(max-width:600px){.mundopdf-library{padding:24px 12px 30px}.mpl-shelf{grid-template-columns:repeat(2,minmax(0,1fr));padding-inline:6px}.mpl-cover-wrap{height:165px}.mpl-cover{max-height:155px}.mpl-book-title{font-size:.9rem}.mpl-modal{padding:2vh 2vw}.mpl-modal iframe{height:86vh}}
@media(prefers-reduced-motion:reduce){.mpl-cover,.mpl-cover-loading{transition:none;animation:none}}
/* MundoPDF 1.9.2 library refinements */
.mpl-book-title{display:none!important}
.mpl-shelf{align-items:end;gap:30px 24px;padding-bottom:30px}
.mpl-cover-wrap{height:220px}
.mpl-viewer{margin-top:18px;margin-bottom:0}
.mpl-viewer-head{position:sticky;top:0;z-index:5}
.mpl-viewer-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
.mpl-viewer-up{border:0;background:rgba(255,255,255,.12);color:#fff;min-height:38px;padding:0 12px;border-radius:6px;font:600 13px/1 system-ui,-apple-system,sans-serif;cursor:pointer;display:inline-flex;align-items:center;gap:6px}
.mpl-viewer-up:hover,.mpl-viewer-up:focus-visible,.mpl-viewer-close:hover,.mpl-viewer-close:focus-visible{background:rgba(255,255,255,.22);outline:2px solid rgba(255,255,255,.55);outline-offset:2px}
.mpl-viewer iframe{height:740px!important}
.mpl-back-to-library{position:sticky;bottom:16px;z-index:6;margin:12px 12px 0 auto;width:max-content;border:0;border-radius:999px;background:#fff;color:#0b3476;box-shadow:0 5px 18px rgba(0,0,0,.25);padding:10px 15px;font-weight:700;cursor:pointer;display:flex;align-items:center;gap:7px}
.mpl-viewer[hidden] .mpl-back-to-library{display:none}
@media(max-width:900px){.mpl-cover-wrap{height:190px}.mpl-viewer iframe{height:650px!important}}
@media(max-width:600px){.mpl-cover-wrap{height:170px}.mpl-viewer iframe{height:590px!important}.mpl-viewer-title{max-width:45%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mpl-viewer-up{padding:0 9px}.mpl-viewer-up span{display:none}.mpl-back-to-library{bottom:10px}}

/* MundoPDF 1.9.3 close-viewer positioning */
.mpl-head{scroll-margin-top:24px}
.mundopdf-library:has(.mpl-viewer[hidden]){padding-bottom:28px}
.mundopdf-library:has(.mpl-viewer[hidden]) .mpl-shelf{margin-bottom:0}

/* MundoPDF 1.9.4 — estanterías por fila con acabado de madera */
.mpl-shelves{position:relative;z-index:1;display:flex;flex-direction:column;gap:30px;margin:0 0 8px}
.mpl-shelf{display:block;position:relative;padding:0 18px 0;margin:0;overflow:visible}
.mpl-shelf:after{display:none!important}
.mpl-books-row{display:grid;grid-template-columns:repeat(var(--mpl-cols,5),minmax(0,1fr));gap:26px 24px;align-items:end;padding:8px 10px 0;position:relative;z-index:2}
.mpl-wood-shelf{position:relative;height:25px;margin:0 -4px;z-index:3;transform:perspective(500px) rotateX(2deg);transform-origin:center top;background:linear-gradient(180deg,#d39a55 0%,#bd7935 13%,#9c5723 55%,#713a17 100%);border-radius:2px 2px 4px 4px;border-top:1px solid rgba(255,232,190,.72);box-shadow:0 4px 0 #5d2f13,0 9px 10px rgba(0,0,0,.38),0 18px 22px rgba(0,0,0,.18);overflow:hidden}
.mpl-wood-shelf:before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(4deg,rgba(255,255,255,.05) 0 1px,transparent 1px 8px),linear-gradient(90deg,rgba(70,30,8,.18),transparent 18%,rgba(255,220,160,.12) 40%,transparent 63%,rgba(70,30,8,.16));mix-blend-mode:soft-light;pointer-events:none}
.mpl-wood-shelf:after{content:"";position:absolute;left:1%;right:1%;bottom:-10px;height:13px;background:rgba(0,0,0,.25);filter:blur(7px);border-radius:50%;pointer-events:none}
.mpl-wood-shelf>span{position:absolute;left:0;right:0;bottom:0;height:6px;background:linear-gradient(180deg,rgba(67,31,10,.2),rgba(48,21,7,.55));box-shadow:inset 0 1px rgba(255,255,255,.08)}
.mpl-cover-wrap{height:220px}
.mpl-book{align-self:end}
.mpl-cover{filter:drop-shadow(0 2px 1px rgba(0,0,0,.12))}
.mundopdf-library:has(.mpl-viewer[hidden]) .mpl-shelves{margin-bottom:0}
@media(max-width:900px){.mpl-books-row{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px 14px}.mpl-shelves{gap:25px}.mpl-wood-shelf{height:22px}}
@media(max-width:600px){.mpl-shelf{padding-inline:5px}.mpl-books-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 10px;padding-inline:5px}.mpl-shelves{gap:22px}.mpl-wood-shelf{height:19px;margin-inline:0}}

/* MundoPDF 1.9.5 — estantes horizontales desplazables */
.mpl-shelves{gap:34px}
.mpl-shelf{padding:0 42px}
.mpl-books-row{display:flex!important;grid-template-columns:none!important;gap:24px;overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;scroll-behavior:smooth;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch;padding:10px 8px 5px;scrollbar-width:none;touch-action:pan-x pan-y}
.mpl-books-row::-webkit-scrollbar{display:none}
.mpl-book{flex:0 0 calc((100% - (var(--mpl-cols,5) - 1)*24px)/var(--mpl-cols,5));scroll-snap-align:start}
.mpl-shelf-nav{position:absolute;top:50%;z-index:8;width:38px;height:52px;margin-top:-35px;border:1px solid rgba(255,255,255,.25);border-radius:8px;background:rgba(4,36,84,.78);color:#fff;font-size:32px;line-height:1;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 12px rgba(0,0,0,.22);backdrop-filter:blur(3px)}
.mpl-shelf-prev{left:0}.mpl-shelf-next{right:0}.mpl-shelf-nav:disabled{opacity:.22;cursor:default}.mpl-shelf-nav:not(:disabled):hover,.mpl-shelf-nav:not(:disabled):focus-visible{background:rgba(9,91,156,.95);outline:2px solid rgba(255,255,255,.55);outline-offset:2px}
.mpl-shelf-more{position:absolute;right:43px;top:44%;z-index:7;pointer-events:none;color:#fff;font-size:27px;text-shadow:0 2px 5px rgba(0,0,0,.7);opacity:.9;animation:mplNudge 1.5s ease-in-out infinite}
.mpl-shelf.is-end .mpl-shelf-more{display:none}@keyframes mplNudge{50%{transform:translateX(5px)}}
@media(max-width:900px){.mpl-book{flex-basis:calc((100% - 28px)/3)}.mpl-shelf{padding-inline:36px}.mpl-shelf-more{right:37px}}
@media(max-width:600px){.mundopdf-library{padding-inline:8px}.mpl-head{margin-bottom:18px}.mpl-shelves{gap:0}.mpl-shelf{padding:0 30px}.mpl-shelf:not(:first-child){display:none}.mpl-books-row{gap:14px;padding-inline:4px}.mpl-book{flex:0 0 78%;max-width:260px}.mpl-cover-wrap{height:310px}.mpl-cover{max-height:295px}.mpl-wood-shelf{height:21px;margin-inline:-22px}.mpl-shelf-nav{width:34px;height:48px;top:48%}.mpl-shelf-prev{left:0}.mpl-shelf-next{right:0}.mpl-shelf-more{right:31px;top:46%}}
@media(prefers-reduced-motion:reduce){.mpl-books-row{scroll-behavior:auto}.mpl-shelf-more{animation:none}}

/* MundoPDF 1.10.0 — búsqueda y orden de biblioteca */
.mpl-library-tools{position:relative;z-index:3;display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;margin:-8px auto 24px;max-width:760px}
.mpl-search-wrap{position:relative;flex:1 1 280px;max-width:430px}.mpl-search-icon{position:absolute;left:13px;top:50%;transform:translateY(-50%);font-size:21px;color:#315d91;pointer-events:none}.mpl-library-search,.mpl-library-sort{width:100%;min-height:42px;border:1px solid rgba(255,255,255,.34);border-radius:9px;background:rgba(255,255,255,.96);color:#173a67;font:500 15px/1.2 system-ui,-apple-system,sans-serif;box-shadow:0 3px 10px rgba(0,0,0,.14)}.mpl-library-search{padding:9px 13px 9px 40px}.mpl-library-sort{padding:8px 34px 8px 12px}.mpl-search-wrap:focus-within .mpl-library-search,.mpl-library-sort:focus{outline:3px solid rgba(93,188,255,.42);outline-offset:2px}.mpl-sort-wrap{flex:0 1 210px}.mpl-result-count{font-size:13px;color:rgba(255,255,255,.82);min-width:58px;text-align:left}.mpl-no-results{position:relative;z-index:2;text-align:center;padding:24px 12px 34px;color:#fff;font-weight:650}.mpl-book[hidden]{display:none!important}
@media(max-width:600px){.mpl-library-tools{margin:0 18px 18px;gap:8px}.mpl-search-wrap,.mpl-sort-wrap{flex:1 1 100%;max-width:none}.mpl-result-count{width:100%;text-align:center}.mpl-library-search,.mpl-library-sort{font-size:16px}}

/* MundoPDF 1.12.0 — opciones por biblioteca */
.mpl-brand-logo{display:block;width:min(190px,42vw);height:auto;margin:0 auto 14px;filter:drop-shadow(0 3px 7px rgba(0,0,0,.24))}
.mpl-compact{padding-top:24px;padding-bottom:28px}.mpl-compact .mpl-head{margin-bottom:18px}.mpl-compact .mpl-library-tools{margin-bottom:16px}.mpl-compact .mpl-shelves{gap:18px}.mpl-compact .mpl-cover-wrap{height:205px}.mpl-compact .mpl-books-row{justify-content:center}.mpl-compact .mpl-shelf{max-width:900px;width:100%;margin-inline:auto}
@media(max-width:600px){.mpl-brand-logo{width:min(155px,48vw);margin-bottom:10px}.mpl-compact{padding-top:18px}.mpl-compact .mpl-cover-wrap{height:285px}}