body.reader-page{height:100dvh;overflow:hidden;background:var(--lhb-neutral-950)}
.reader-shell{height:100dvh;display:flex;flex-direction:column;background:var(--weiss)}
.reader-info{flex:0 0 auto;min-height:82px;padding:13px clamp(18px,2.6vw,36px);border-bottom:var(--linie) solid var(--lhb-line-color);display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:24px;background:var(--weiss)}
.reader-title{font:800 clamp(16px,1.65vw,24px)/1.12 var(--lhb-font-display);text-transform:uppercase;letter-spacing:0;margin:0}
.reader-submeta{margin-top:5px;font:500 10px/1.35 var(--lhb-font-display);letter-spacing:.11em;text-transform:uppercase;color:var(--lila)}
.reader-info-right{display:flex;align-items:center;justify-content:flex-end;gap:16px}
.reader-counter{font:800 10px/1.2 var(--lhb-font-display);letter-spacing:.12em;text-transform:uppercase;color:var(--lhb-neutral-650);white-space:nowrap}
.reader-close{display:inline-flex;align-items:center;gap:7px;padding:10px 12px;border:var(--lhb-line-width-medium) solid var(--lhb-line-color);font:800 var(--lhb-type-ui-size)/1 var(--lhb-font-display);letter-spacing:.11em;text-transform:uppercase;color:var(--schwarz);background:var(--weiss);white-space:nowrap}
.reader-close:hover{background:var(--schwarz);color:var(--weiss)}
.reader-viewer{flex:1 1 auto;min-height:0;position:relative;display:flex;align-items:center;justify-content:center;padding:clamp(14px,2vw,28px) 72px;background:var(--lhb-neutral-950);overflow:hidden}
.reader-status{width:min(520px,calc(100% - 32px));display:grid;justify-items:center;gap:10px;text-align:center;color:var(--lhb-overlay-light-92);padding:24px}
.reader-status-title{font:800 clamp(15px,1.5vw,19px)/1.2 var(--lhb-font-display);letter-spacing:.08em;text-transform:uppercase}
.reader-status-detail{max-width:460px;font:400 14px/1.55 var(--lhb-font-body);color:var(--lhb-overlay-light-72)}
.reader-loading-mark{display:flex;align-items:center;gap:7px;height:16px}
.reader-loading-mark span{width:7px;height:7px;border-radius:50%;background:var(--flieder);animation:readerLoadingPulse 1.05s ease-in-out infinite}
.reader-loading-mark span:nth-child(2){animation-delay:.14s}.reader-loading-mark span:nth-child(3){animation-delay:.28s}
.reader-retry{margin-top:4px;padding:10px 13px;border:var(--lhb-line-width-medium) solid var(--lhb-overlay-light-72);background:transparent;color:var(--weiss);font:800 var(--lhb-type-ui-size)/1 var(--lhb-font-display);letter-spacing:.11em;text-transform:uppercase;cursor:pointer}
.reader-retry:hover,.reader-retry:focus-visible{background:var(--weiss);color:var(--schwarz);border-color:var(--weiss)}
@keyframes readerLoadingPulse{0%,100%{opacity:.28;transform:translateY(0)}50%{opacity:1;transform:translateY(-4px)}}
.reader-stage[hidden],.reader-thumbs[hidden]{display:none!important}
.reader-page.reader-is-loading .reader-controls,.reader-page.reader-is-error .reader-controls{display:none}
.reader-page.reader-is-ready .reader-status{display:none}
.reader-page.reader-is-error .reader-loading-mark{display:none}
@media(prefers-reduced-motion:reduce){.reader-loading-mark span{animation:none;opacity:.72}}
.reader-stage{width:100%;height:100%;display:flex;align-items:center;justify-content:center}
.reader-book{position:relative;display:flex;align-items:stretch;justify-content:center;user-select:none;perspective:4000px;box-shadow:0 16px 60px rgba(0,0,0,.55),0 3px 12px rgba(0,0,0,.35);transform-style:preserve-3d}
.reader-page-left,.reader-page-right{overflow:hidden;flex-shrink:0;display:flex;align-items:center;justify-content:center;background:var(--lhb-surface-reader-paper);cursor:pointer;position:relative}
.reader-page-left:hover::before,.reader-page-right:hover::before{content:'';position:absolute;inset:0;background:var(--lhb-overlay-accent-045);z-index:3;pointer-events:none}
.reader-page-left img,.reader-page-right img{display:block;width:100%;height:100%;object-fit:contain;transition:opacity .2s}
.reader-page-left.blank{display:none}
.reader-book-shadow{position:absolute;inset:0;pointer-events:none;z-index:30;background:linear-gradient(to left,rgba(0,0,0,.18),rgba(0,0,0,.04) 18%,transparent 48%) left/50% 100% no-repeat,linear-gradient(to right,rgba(0,0,0,.18),rgba(0,0,0,.04) 18%,transparent 48%) right/50% 100% no-repeat}
.reader-book.single-page .reader-book-shadow,.reader-book.source-spread .reader-book-shadow{opacity:0}
.reader-spine{position:absolute;left:50%;top:0;bottom:0;width:1px;background:rgba(0,0,0,.2);z-index:4;transform:translateX(-50%);pointer-events:none}
.reader-book.single-page .reader-spine,.reader-book.source-spread .reader-spine{display:none}
.reader-book:not(.single-page):not(.source-spread)::before{content:'';position:absolute;top:0;bottom:0;right:-9px;width:9px;background:repeating-linear-gradient(to right,var(--lhb-surface-reader-edge-dark),var(--lhb-surface-reader-edge-dark) .5px,var(--lhb-surface-reader-edge-light) .5px,var(--lhb-surface-reader-edge-light) 1.5px);z-index:-1}
@keyframes readerFlipForward{from{transform:rotateY(0deg)}to{transform:rotateY(-180deg)}}
@keyframes readerFlipBackward{from{transform:rotateY(0deg)}to{transform:rotateY(180deg)}}
@keyframes readerSpreadForward{0%{opacity:1;transform:perspective(1800px) rotateY(0) scale(1)}45%{opacity:.15;transform:perspective(1800px) rotateY(-8deg) scale(.985)}100%{opacity:1;transform:perspective(1800px) rotateY(0) scale(1)}}
@keyframes readerSpreadBackward{0%{opacity:1;transform:perspective(1800px) rotateY(0) scale(1)}45%{opacity:.15;transform:perspective(1800px) rotateY(8deg) scale(.985)}100%{opacity:1;transform:perspective(1800px) rotateY(0) scale(1)}}
.reader-book.transition-forward{animation:readerSpreadForward .46s ease}
.reader-book.transition-backward{animation:readerSpreadBackward .46s ease}
.reader-controls{position:absolute;inset:0;pointer-events:none;display:flex;align-items:center;justify-content:space-between;padding:0 12px}
.reader-arrow{pointer-events:auto;width:50px;height:66px;display:flex;align-items:center;justify-content:center;border:var(--lhb-line-width-medium) solid var(--lhb-overlay-light-72);background:var(--lhb-overlay-dark-65);color:var(--weiss);cursor:pointer;font:800 34px/1 var(--lhb-font-display)}
.reader-arrow:hover{background:var(--lila);border-color:var(--lila)}
.reader-arrow.hidden{opacity:0;pointer-events:none}
.reader-thumbs{flex:0 0 84px;border-top:var(--lhb-line-width-medium) solid var(--lhb-neutral-650);overflow-x:auto;overflow-y:hidden;display:flex;align-items:center;gap:0;padding:8px clamp(16px,2.5vw,36px);background:var(--lhb-neutral-950);scrollbar-width:thin;scrollbar-color:var(--lila) var(--lhb-neutral-800)}
.reader-thumb-pair{display:flex;align-items:center;flex-shrink:0;margin-right:11px;padding:0;border:var(--lhb-line-width-medium) solid transparent;background:transparent;cursor:pointer}
.reader-thumb{height:62px;width:auto;object-fit:contain;background:var(--lhb-neutral-80);opacity:.42;border:var(--lhb-line-width-thin) solid transparent;transition:opacity .15s}
.reader-thumb-pair:hover .reader-thumb{opacity:.76}
.reader-thumb-pair.active{border-color:var(--flieder)}
.reader-thumb-pair.active .reader-thumb{opacity:1}
.reader-thumb-pair .reader-thumb+.reader-thumb{border-left:none}
@media(max-width:760px){
  .reader-info{min-height:78px;padding:9px 12px;grid-template-columns:minmax(0,1fr) auto;gap:10px}
  .reader-title{font-size:12.5px;line-height:1.13;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .reader-submeta{font-size:var(--lhb-type-credit-size);margin-top:3px}
  .reader-info-right{gap:8px}.reader-counter{font-size:var(--lhb-type-credit-size)}.reader-close{width:42px;height:42px;padding:0;justify-content:center}.reader-close span{display:none}.reader-close i{font-size:18px}
  .reader-viewer{padding:10px 0}
  .reader-controls{display:none}
  .reader-thumbs{flex-basis:58px;padding:6px 10px}.reader-thumb{height:42px}
}

/* v136: getrennte Readerlogik für Einzelblatt- und Quelldoppelseiten. */
.reader-close{cursor:pointer}
.reader-flip{position:absolute;top:0;z-index:40;transform-style:preserve-3d;pointer-events:none}
.reader-flip--forward{left:50%;transform-origin:left center;animation:readerFlipForward .65s cubic-bezier(.4,0,.2,1) forwards}
.reader-flip--backward{left:0;transform-origin:right center;animation:readerFlipBackward .65s cubic-bezier(.4,0,.2,1) forwards}
.reader-flip-face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;overflow:hidden;background:var(--lhb-surface-reader-paper)}
.reader-flip-face img{width:100%;height:100%;object-fit:contain;display:block}
.reader-book.reader-fade{opacity:0;transition:opacity .16s ease}
.reader-mode-source-spreads .reader-book:not(.source-spread):not(.single-page)::before{display:none}

/* v137: one publication reader for books and journals; destination pages are
   installed beneath the turning sheet before the flip begins. */