/* Ana sayfa Kitaplar bölümü (kitaplar.php) — CSS 3D kitap */
.ts-books {
  position: relative;
  padding: 110px 0 120px;
  background: #1a1a1a;
  overflow: hidden;
  isolation: isolate;
}

/* Arka planda yumuşak sarı ışık */
.ts-books::before,
.ts-books::after {
  content: "";
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  filter: blur(10px);
}

.ts-books::before {
  width: 620px;
  height: 620px;
  left: -180px;
  top: -260px;
  background: radial-gradient(circle, rgba(var(--ts-base-rgb), .16), transparent 65%);
}

.ts-books::after {
  width: 520px;
  height: 520px;
  right: -160px;
  bottom: -240px;
  background: radial-gradient(circle, rgba(var(--ts-base-rgb), .10), transparent 65%);
}

/* Başlık */
.ts-books__title {
  position: relative;
  margin: 0 0 72px;
  padding-bottom: 22px;
  text-align: center;
  font-size: clamp(36px, 4.5vw, 56px);
  font-weight: 700;
  line-height: 1.1;
  color: #fff;
}

.ts-books__title::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 56px;
  height: 3px;
  border-radius: 3px;
  background: var(--ts-base);
  transform: translateX(-50%);
}

/* Izgara */
.ts-books__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 400px));
  justify-content: center;
  gap: 56px 90px;
}

.ts-book,
.ts-book__link {
  height: 100%;
}

.ts-book__link {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  color: #fff;
  text-decoration: none;
}

/* ---------- 3D kitap ----------
   --h: kitap yüksekliği, --ratio: kapak en/boy (PHP'den), --d: kitap kalınlığı */
.ts-book {
  --h: 420px;
  --w: calc(var(--h) * var(--ratio, .68));
  --d: 46px;
}

.ts-book__stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: calc(var(--h) + 60px);
  perspective: 1100px;
}

/* Zemin gölgesi */
.ts-book__stage::after {
  content: "";
  position: absolute;
  bottom: 6px;
  left: 50%;
  width: calc(var(--w) * 1.25);
  height: 34px;
  transform: translateX(-46%);
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(0, 0, 0, .75), transparent 70%);
  transition: width .6s ease, opacity .6s ease;
}

.ts-book3d {
  position: relative;
  width: var(--w);
  height: var(--h);
  transform-style: preserve-3d;
  transform: rotateY(-34deg) rotateX(3deg);
  transition: transform .7s cubic-bezier(.2, .7, .2, 1);
}

.ts-book3d > span {
  position: absolute;
  top: 0;
  backface-visibility: hidden;
}

/* Ön kapak */
.ts-book3d__front {
  left: 0;
  width: var(--w);
  height: var(--h);
  border-radius: 2px 6px 6px 2px;
  overflow: hidden;
  transform: translateZ(calc(var(--d) / 2));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .06);
}

.ts-book3d__front img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Cilt kıvrımı + parlama */
.ts-book3d__front::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, .45) 0, rgba(255, 255, 255, .22) 1.2%, rgba(0, 0, 0, .18) 2.6%, rgba(255, 255, 255, .06) 4%, transparent 7%),
    linear-gradient(115deg, rgba(255, 255, 255, .22) 0%, rgba(255, 255, 255, 0) 38%),
    linear-gradient(90deg, rgba(0, 0, 0, 0) 55%, rgba(0, 0, 0, .18) 100%); /* dönüş yönünde hafif gölge */
}

/* Sırt (sol kenar): kapağın sol şeridi, karartılmış */
.ts-book3d__spine {
  left: calc(var(--d) / -2);
  width: var(--d);
  height: var(--h);
  background-image: linear-gradient(90deg, rgba(0, 0, 0, .55), rgba(0, 0, 0, .25) 45%, rgba(0, 0, 0, .5)), var(--cover);
  background-size: 100% 100%, auto 100%;
  background-position: 0 0, left center;
  transform: rotateY(-90deg);
  border-radius: 2px 0 0 2px;
}

/* Sayfa kenarı (sağ) */
.ts-book3d__pages {
  top: 4px !important;
  left: calc(var(--w) - var(--d) / 2 - 3px);
  width: calc(var(--d) - 4px);
  height: calc(var(--h) - 8px);
  background:
    linear-gradient(90deg, rgba(0, 0, 0, .18), rgba(0, 0, 0, 0) 30%, rgba(0, 0, 0, 0) 70%, rgba(0, 0, 0, .22)),
    repeating-linear-gradient(90deg, #f6f2e8 0 2px, #ddd6c6 2px 3px);
  transform: rotateY(90deg);
}

/* Arka kapak */
.ts-book3d__back {
  left: 0;
  width: var(--w);
  height: var(--h);
  background: #2b2b2b;
  border-radius: 6px 2px 2px 6px;
  transform: rotateY(180deg) translateZ(calc(var(--d) / 2));
  box-shadow: 0 0 40px rgba(0, 0, 0, .5);
}

/* Etkileşim: kitap size doğru döner ve hafifçe yükselir */
.ts-book__link:hover .ts-book3d,
.ts-book__link:focus-visible .ts-book3d {
  transform: rotateY(-14deg) rotateX(2deg) translateY(-10px);
}

.ts-book__link:hover .ts-book__stage::after {
  width: calc(var(--w) * 1.05);
  opacity: .8;
}

/* Metin + buton */
.ts-book__name {
  margin: 30px 0 20px;
  max-width: 360px;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.35;
  color: #fff;
}

.ts-book__btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: auto; /* başlıklar farklı uzunlukta olsa da butonlar aynı hizada */
  padding: 14px 28px;
  border-radius: 999px;
  background: var(--ts-base);
  color: var(--ts-black);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  transition: background .3s ease, transform .3s ease;
}

.ts-book__btn i { font-size: 12px; }

.ts-book__link:hover .ts-book__btn,
.ts-book__link:focus-visible .ts-book__btn {
  background: #fff;
  transform: translateY(-2px);
}

.ts-book__link:focus-visible {
  outline: 3px solid var(--ts-base);
  outline-offset: 8px;
  border-radius: 12px;
}

@media (prefers-reduced-motion: reduce) {
  .ts-book3d, .ts-book__btn, .ts-book__stage::after { transition: none; }
}

/* Tablet */
@media (max-width: 991px) {
  .ts-books { padding: 80px 0 90px; }
  .ts-books__title { margin-bottom: 56px; }
  .ts-books__grid { gap: 48px 40px; }
  .ts-book { --h: 340px; --d: 38px; }
}

/* Mobil: kitaplar alt alta, daha az dönük */
@media (max-width: 575px) {
  .ts-books__title { margin-bottom: 40px; }
  .ts-books__grid { grid-template-columns: minmax(0, 1fr); gap: 60px; }
  .ts-book { --h: 320px; --d: 34px; }
  .ts-book3d { transform: rotateY(-26deg) rotateX(2deg); }
  .ts-book__name { font-size: 20px; }
}