/* ============================================================
   ANIMATIONS.CSS — Kobi Proje Danışmanlık
   ============================================================
   Scroll tetiklemeli animasyonlar, kademeli (stagger) gecikmeler,
   sayfa yükleme animasyonu, ripple efekti ve erişilebilirlik
   için prefers-reduced-motion desteği.
   
   Animasyonlar Intersection Observer API ile tetiklenir.
   Başlangıç durumu: opacity 0 + transform offset
   Aktif durum (.is-visible): opacity 1 + transform none
   ============================================================ */

/* ============================================================
   1. SCROLL ANİMASYON SINIFLARI
   ============================================================ */

/* Fade In — yerinde belirme */
.animate-fade-in {
  opacity: 0;
  transition: opacity 600ms ease-out;
}

.animate-fade-in.is-visible {
  opacity: 1;
}

/* Slide Up — aşağıdan yukarı kayarak belirme */
.animate-slide-up {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 600ms ease-out,
    transform 600ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.animate-slide-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Slide Left — sağdan sola kayarak belirme */
.animate-slide-left {
  opacity: 0;
  transform: translateX(60px);
  transition:
    opacity 600ms ease-out,
    transform 700ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.animate-slide-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* Slide Right — soldan sağa kayarak belirme */
.animate-slide-right {
  opacity: 0;
  transform: translateX(-60px);
  transition:
    opacity 600ms ease-out,
    transform 700ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.animate-slide-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* Scale In — küçükten büyüğe belirme */
.animate-scale-in {
  opacity: 0;
  transform: scale(0.85);
  transition:
    opacity 500ms ease-out,
    transform 500ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.animate-scale-in.is-visible {
  opacity: 1;
  transform: scale(1);
}

/* ============================================================
   2. STAGGER (KADEMELİ) ANİMASYON GECİKMELERİ
   ============================================================ */
.stagger-1 { transition-delay: 100ms; }
.stagger-2 { transition-delay: 200ms; }
.stagger-3 { transition-delay: 300ms; }
.stagger-4 { transition-delay: 400ms; }
.stagger-5 { transition-delay: 500ms; }
.stagger-6 { transition-delay: 600ms; }

/* ============================================================
   3. SAYFA YÜKLEME ANİMASYONU (Page Loader)
   ============================================================ */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 99999;
  background: linear-gradient(
    135deg,
    var(--color-primary-dark) 0%,
    var(--color-primary) 100%
  );
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.page-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.page-loader__logo {
  width: 120px;
  height: auto;
  animation: loader-fade-in 0.8s ease-out forwards;
}

.page-loader__spinner {
  width: 40px;
  height: 40px;
  margin-top: var(--space-lg);
  border: 3px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--color-secondary);
  border-radius: var(--radius-full);
  animation: loader-spin 0.8s linear infinite;
}

@keyframes loader-fade-in {
  0% {
    opacity: 0;
    transform: scale(0.9);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes loader-spin {
  to {
    transform: rotate(360deg);
  }
}

/* ============================================================
   4. RIPPLE EFEKTİ (Material Design tarzı tıklama geri bildirimi)
   ============================================================ */
.ripple {
  position: relative;
  overflow: hidden;
}

.ripple__wave {
  position: absolute;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.35);
  transform: scale(0);
  animation: ripple-expand 600ms ease-out forwards;
  pointer-events: none;
}

@keyframes ripple-expand {
  0% {
    transform: scale(0);
    opacity: 1;
  }
  100% {
    transform: scale(4);
    opacity: 0;
  }
}

/* ============================================================
   5. ERİŞİLEBİLİRLİK — prefers-reduced-motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .animate-fade-in,
  .animate-slide-up,
  .animate-slide-left,
  .animate-slide-right,
  .animate-scale-in {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .stagger-1,
  .stagger-2,
  .stagger-3,
  .stagger-4,
  .stagger-5,
  .stagger-6 {
    transition-delay: 0ms !important;
  }

  .page-loader {
    transition: none !important;
  }

  .page-loader__logo {
    animation: none !important;
    opacity: 1 !important;
  }

  .page-loader__spinner {
    animation: none !important;
  }

  .ripple__wave {
    animation: none !important;
  }

  .whatsapp-btn.is-bouncing {
    animation: none !important;
  }
}