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.reader-download{color:#fff;border-color:var(--green);background:var(--green)}.reader-main{flex-direction:column;flex:1;width:100%;min-height:0;display:flex}.reader-toolbar{z-index:10;border-bottom:1px solid var(--line);direction:ltr;background:#fff;flex-shrink:0;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;padding:6px 24px;display:grid}.reader-pagination{grid-column:2;align-items:center;gap:12px;display:flex}.reader-pagination button{direction:ltr}.reader-toolbar button{border:1px solid var(--line);cursor:pointer;white-space:nowrap;background:#fff;border-radius:7px;min-height:40px;padding:0 14px;font-size:12px}.reader-page-select{color:var(--muted);white-space:nowrap;direction:ltr;align-items:center;gap:10px;font-size:12px;display:flex}.reader-page-select select{width:68px;height:40px;font-size:13px}.reader-toolbar .reader-zoom{color:var(--green);direction:ltr;grid-column:3;justify-self:end}.reader-page{background:#e7e7e0;flex:1;justify-content:center;min-height:0;padding:8px;display:flex;position:relative;overflow:hidden}.flipbook-stage,.flipbook{width:100%;height:100%}.reader-page .flipbook{touch-action:none;min-width:0!important;min-height:0!important}.flipbook .stf__wrapper{height:100%}.flipbook .stf__block{transition:transform .35s}.flipbook[data-cover=front] .stf__block{transform:translateX(calc(var(--flipbook-page-width) * -.5))}.flipbook[data-cover=back] .stf__block{transform:translateX(calc(var(--flipbook-page-width) * .5))}.flipbook-page{background:#fff;overflow:hidden;box-shadow:0 1px 9px #00000026}.flipbook-page>img{object-fit:contain;-webkit-user-select:none;user-select:none;-webkit-user-drag:none;-webkit-touch-callout:none;width:100%;height:100%;display:block;position:relative}.flipbook-page-fallback{color:var(--muted);flex-direction:column;justify-content:center;align-items:center;gap:16px;font-size:12px;display:flex;position:absolute;inset:0}.flipbook-page-fallback a{color:var(--green);display:none}.flipbook-page.is-loaded .flipbook-page-fallback{display:none}.flipbook-page.has-error .flipbook-page-fallback span{font-size:0}.flipbook-page.has-error .flipbook-page-fallback span:after{content:"Sayfa yüklenemedi";font-size:12px}.flipbook-page.has-error .flipbook-page-fallback a{display:block}.flipbook-page:not(.is-loaded)>img{visibility:hidden}.reader-page.is-zoomed .flipbook-stage{visibility:hidden;pointer-events:none}.reader-zoom-view{z-index:1;background:#e7e7e0;padding:8px;position:absolute;inset:0;overflow:auto}.reader-zoom-view>img{max-width:none;height:auto;display:block}.reader-mobile-nav{display:none}.reader-status{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}@media (prefers-reduced-motion:reduce){.flipbook .stf__block{transition:none}}@media (width>=681px) and (width<=960px){.book-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}}@media (width<=680px){.academy-header{padding:9px 20px}.academy-brand img{width:36px;height:36px}.academy-header-note{display:none}.academy-brand strong{font-size:19px}.hub-main{padding:16px 20px}.hub-eyebrow{display:none}.hub-intro h1{margin-bottom:6px;font-size:28px}.hub-intro>p:last-child{font-size:12px;line-height:1.45}.book-grid{grid-template-columns:1fr;gap:10px;margin-top:14px}.book-option{border-radius:10px;justify-self:center;width:min(100%,100svh - 232px)}.book-card-art{aspect-ratio:3}.hub-footer{margin-top:14px;font-size:10px;line-height:1.4}.header-meta{flex-wrap:wrap;justify-content:flex-end}.header-meta .section-back-link{display:inline-flex}}@media (width<=900px) and (height<=500px) and (orientation:landscape){.academy-header{padding:6px 20px}.academy-brand img{width:30px;height:30px}.academy-brand strong{font-size:17px}.hub-main{padding:12px 16px}.hub-eyebrow,.hub-intro>p:last-child,.hub-footer{display:none}.hub-intro h1{margin:0;font-size:24px}.book-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:12px}.book-option{justify-self:center;width:min(100%,80svh - 88px)}.book-card-art{aspect-ratio:4/5}}@media (prefers-reduced-motion:reduce){.book-option{transition:none}}@media (width<=900px){.teacher-portal .header-meta>span{display:none}.teacher-portal .simple-header{gap:12px}}@media (width<=680px),(pointer:coarse){.reader-heading{gap:8px;min-height:54px;padding:5px 12px}.reader-back{flex-shrink:0;justify-content:center;min-width:36px;font-size:20px}.reader-back span{display:none}.reader-heading h1{font-size:clamp(18px,5.5vw,22px)}.reader-file-actions{flex-shrink:0;gap:6px}.reader-file-actions a{min-height:40px;padding:0 10px;font-size:11px}.reader-toolbar{gap:7px;padding:5px 12px;display:flex}.reader-pagination{gap:7px}.reader-toolbar button{min-width:40px;padding:0 9px}.reader-pagination>button{display:none}.reader-toolbar .reader-zoom{margin-left:auto;font-size:11px}.reader-page-select{gap:6px;font-size:11px}.reader-page-select>span:first-child{display:inline}.reader-page-select select{width:55px}.reader-page{padding:6px}.reader-mobile-nav{padding:8px 12px max(8px, env(safe-area-inset-bottom));border-top:1px solid var(--line);background:#fff;flex-shrink:0;grid-template-columns:1fr 1fr;gap:8px;display:grid}.reader-mobile-nav button{border:1px solid var(--line-dark);min-height:48px;color:var(--green);cursor:pointer;direction:ltr;background:#fff;border-radius:8px;padding:0 10px;font-size:14px;font-weight:600}.reader-mobile-nav .reader-mobile-next{border-color:var(--green);background:var(--green);color:#fff}}