/* Light, texture and a quiet transition into each book's world. */
.hero-inner { position:relative; }
.hero { background:radial-gradient(ellipse at 82% 40%,#33465c 0%,#172738 34%,#101b28 72%); }
.hero-books::before { content:""; position:absolute; inset:-35% -15%; background:linear-gradient(115deg,transparent 30%,#e4efff0c 43%,#e4efff18 47%,transparent 63%); pointer-events:none; transform:rotate(-8deg); }
.book-front { overflow:hidden; }
.book-front::before { content:""; position:absolute; z-index:2; inset:-25% -80%; pointer-events:none; background:linear-gradient(105deg,transparent 38%,#ffffff00 43%,#ffffff30 50%,#ffffff00 58%,transparent 65%); transform:translateX(-65%); }
@media(hover:hover) and (pointer:fine) {
  .book-cover:hover .book-front::before,.hero-book:hover .book-front::before,.detail-art:hover .book-front::before { animation:cover-light 1.15s ease-out; }
}
@keyframes cover-light { to { transform:translateX(65%); } }
.book-card[data-genre="Gerilim"] .book-cover { background:radial-gradient(ellipse at 70% 15%,#e0d8dc,#eae7eb 65%); }
.book-card[data-genre="Polisiye"] .book-cover { background:radial-gradient(ellipse at 75% 10%,#cbd8e1,#e4eaf0 65%); }
.book-card[data-genre="Tarih ve hafıza"] .book-cover { background:linear-gradient(135deg,#e3ded0,#f2eee5); }
.book-card[data-genre="Yakın gelecek"] .book-cover { background:radial-gradient(ellipse at 80% 10%,#c4dadf,#e0e9ec 65%); }
.book-page[data-atmosphere="suspense"] { --red:#993947; --scene:#281d2c; --glow:#695063; }
.book-page[data-atmosphere="mystery"] { --red:#315e83; --scene:#102637; --glow:#486d83; }
.book-page[data-atmosphere="memory"] { --red:#876335; --scene:#40372c; --glow:#9c896b; }
.book-page[data-atmosphere="future"] { --red:#286d75; --scene:#092c35; --glow:#398493; }
.book-page[data-atmosphere] .detail-art { position:relative; isolation:isolate; background:radial-gradient(ellipse at 65% 25%,var(--glow),var(--scene) 78%); }
.book-page[data-atmosphere] .detail-art::before { content:""; position:absolute; inset:0; z-index:-1; background:linear-gradient(115deg,transparent 25%,#fff1 46%,transparent 67%); }
.book-page[data-atmosphere="memory"] .detail-art::before { background:repeating-linear-gradient(0deg,transparent 0px,transparent 31px,#ffffff0a 32px),linear-gradient(115deg,transparent,#ffffff14,transparent); }
.book-page[data-atmosphere="future"] .detail-art::before { background:linear-gradient(90deg,transparent 49.8%,#ffffff0d 50%,transparent 50.2%),linear-gradient(0deg,transparent 49.8%,#ffffff0d 50%,transparent 50.2%); background-size:46px 46px; }
.book-page[data-atmosphere] .book-excerpt { background:linear-gradient(180deg,#f0f2f4,#fff); }
@media(prefers-reduced-motion:reduce) { .book-front::before { display:none; } }