/* ═══ Sahne destesi: zeminler, geçiş koreografisi, katman fiziği ═══ */

.deck {
  position: fixed;
  inset: 0;
  z-index: var(--z-deck);
  height: 100svh;
  background: var(--bg);
  transition: background 900ms var(--ease-soft);
}

/* ── Zemin katmanları ── */
.zeminler,
.zemin {
  position: absolute;
  inset: 0;
}
.zemin {
  opacity: 0;
  transition: opacity 1000ms var(--ease-soft);
}
.zemin.acik {
  opacity: 1;
}

.zemin-isik {
  background: radial-gradient(circle at 50% 42%, #ffffff 0%, var(--paper-warm) 52%, var(--sand-50) 100%);
}
.zemin-krem {
  background: radial-gradient(circle at 50% 40%, #fdf9f1 0%, var(--sand-50) 46%, var(--sand-100) 100%);
}
.zemin-kil {
  background: radial-gradient(circle at 50% 38%, var(--clay-600) 0%, var(--clay-700) 48%, var(--clay-800) 100%);
}

/* İmleci izleyen yumuşak ışık — sahneye derinlik verir */
.zemin-hale {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.55;
  background: radial-gradient(
    420px circle at var(--mx, 50%) var(--my, 45%),
    rgba(227, 217, 198, 0.55),
    transparent 70%
  );
  transition: opacity 600ms;
}
[data-tone="dark"] .zemin-hale {
  background: radial-gradient(
    460px circle at var(--mx, 50%) var(--my, 45%),
    rgba(255, 236, 214, 0.16),
    transparent 70%
  );
}

/* ── Sahneler ── */
.sahne {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: calc(var(--header-h) + 1.4vh) var(--edge) 0;
  overflow: hidden;
  visibility: hidden;
  pointer-events: none;
}
.sahne.etkin {
  visibility: visible;
  pointer-events: auto;
  z-index: 3;
}
.sahne.cikiyor {
  visibility: visible;
  z-index: 2;
}

.metin {
  position: relative;
  z-index: 6;
  display: grid;
  gap: clamp(0.75rem, 0.5rem + 1vh, 1.5rem);
  max-width: 62rem;
  text-align: center;
}

.dekor {
  position: relative;
  z-index: 3;
  flex: 1;
  width: min(100%, 78rem);
}

/* ── Katman fiziği ──
   .katman  → JS fare paralaksı (data-derinlik px yarıçapı)
   .anim    → sahne giriş/çıkış geçişi
   .suzul   → sürekli süzülme döngüsü                         */
.katman {
  will-change: transform;
}
.dekor .katman {
  position: absolute;
  transform: translate(-50%, -50%);
}
.metin .katman {
  position: relative;
}

.anim {
  opacity: 0;
  transform: translate3d(0, calc(var(--yon, 1) * 56px), 0) scale(0.95);
  transition: transform var(--dur-slide) var(--ease-expo) var(--g, 0ms),
    opacity calc(var(--dur-slide) * 0.8) var(--ease-soft) var(--g, 0ms);
}
.sahne.etkin .anim {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(1);
}
.sahne.cikiyor .anim {
  opacity: 0;
  transform: translate3d(0, calc(var(--yon, 1) * -46px), 0) scale(0.97);
  transition-duration: var(--dur-out), calc(var(--dur-out) * 0.7);
  transition-delay: 0ms, 0ms;
}

/* İlk yüklemede animasyonsuz konumlanma */
.deck.anim-yok .anim,
.deck.anim-yok .zemin {
  transition: none !important;
}

/* ── Süzülme ── */
.suzul {
  animation: suzul-y 6.4s ease-in-out infinite;
}
.suzul-b {
  animation: suzul-yr 7.8s ease-in-out infinite alternate-reverse;
}
.suzul-c {
  animation: suzul-y 5.4s ease-in-out -2.4s infinite;
}
@keyframes suzul-y {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-12px) rotate(1.4deg); }
}
@keyframes suzul-yr {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-17px) rotate(-2deg); }
}

/* ── Ürün görselleri ── */
.urun-gorsel {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 30px 42px rgba(92, 39, 22, 0.26));
}
[data-tone="dark"] .urun-gorsel {
  filter: drop-shadow(0 34px 48px rgba(0, 0, 0, 0.42));
}

/* Vitrin (ana ürün) fareyle hafifçe eğilir */
.vitrin-sarmal {
  transform-style: preserve-3d;
  transition: transform 520ms var(--ease-soft);
}

.golge-leke {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(
    ellipse at center,
    rgba(92, 39, 22, 0.26) 0%,
    rgba(92, 39, 22, 0) 68%
  );
}
[data-tone="dark"] .golge-leke {
  background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.45) 0%, transparent 68%);
}

/* ── Şeker tanesi serpintisi ── */
.serpinti {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

/* ── Kayan şerit ── */
.serit {
  position: relative;
  z-index: 4;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  padding-block: 0.7rem;
  border-block: 1px solid var(--line);
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.serit-ic {
  display: flex;
  width: max-content;
  gap: 2.4rem;
  animation: serit-kay 26s linear infinite;
}
.serit-ic span {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(0.95rem, 2.2vw, 1.5rem);
  color: var(--accent);
  white-space: nowrap;
}
.serit-ic span::after {
  content: "✦";
  margin-left: 2.4rem;
  font-style: normal;
  opacity: 0.55;
}
@keyframes serit-kay {
  to { transform: translateX(-50%); }
}
.serit:hover .serit-ic {
  animation-play-state: paused;
}

/* ── İletişim ızgarası ── */
.iletisim-izgara {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.2rem, 3vw, 3.4rem);
  padding-top: clamp(1.3rem, 3vh, 2.2rem);
  border-top: 1px solid var(--line);
}
.iletisim-oge h3 {
  margin-bottom: 0.6em;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
}
.iletisim-oge p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--fg-soft);
  font-weight: 500;
}

.cta-sarmal {
  display: grid;
  justify-items: center;
  gap: 0.75rem;
  margin-top: clamp(0.6rem, 2vh, 1.4rem);
}
.cta-not {
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-soft);
  opacity: 0.75;
}