body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: #fbfbfd; /* Apple's signature off-white */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #1d1d1f; /* Apple's text color */
}

/* Typography refinements */
h1, h2, h3, h4, h5, h6 {
  letter-spacing: -0.02em;
}

/* Minimalist gradients */
.kuka-gradient { 
  background: #1d1d1f; 
}
.kuka-gradient:hover {
  background: #000000;
}

.gradient-text { 
  background: linear-gradient(90deg, #1d1d1f 0%, #434345 100%); 
  -webkit-background-clip: text; 
  background-clip: text; 
  color: transparent; 
}

/* Subtle Hotspot */
.hotspot { 
  background-color: rgba(255, 255, 255, 0.9); 
  border: 1px solid rgba(0,0,0,0.1); 
  box-shadow: 0 4px 14px rgba(0,0,0,0.1);
  border-radius: 50%;
  transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}
.hotspot:hover { 
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

@keyframes float { 
  0%, 100% { transform: translateY(0); } 
  50% { transform: translateY(-8px); } 
}
.floating { animation: float 6s ease-in-out infinite; }

.lang-btn[aria-pressed="true"] { 
  border-color: #1d1d1f !important; 
}

.footer-link { color: #86868b; text-decoration: none; transition: color 0.2s; }
.footer-link:hover { color: #1d1d1f; }
.footer-link:focus-visible { 
  outline: 2px solid #1d1d1f; 
  outline-offset: 2px; 
  border-radius: 0.375rem; 
}

/* --- Logo Duvarı Animasyonu --- */
.logo-wall {
  width: 100%;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
  mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
}
.logo-wall-track {
  display: flex;
  width: fit-content;
  animation: scroll-logos 50s linear infinite;
}
.logo-wall-track img {
  height: 2rem; 
  width: auto;
  margin: 0 2.5rem; 
  filter: grayscale(1) opacity(0.4);
  transition: all 0.4s ease;
}
.logo-wall-track img:hover {
  filter: grayscale(1) opacity(0.8);
}
@keyframes scroll-logos {
  from { transform: translateX(0); } to { transform: translateX(-50%); }
}

/* --- Kaydırma Animasyonları --- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px) scale(0.98);
  transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
  transition-delay: var(--scroll-delay, 0ms);
}
.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* --- Resim İskelet --- */
.skeleton-wrapper {
  position: relative;
  background-color: #f5f5f7;
  overflow: hidden;
  border-radius: 1.5rem;
}

/* Apple-like Glass Card */
.glass-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.04);
}

/* --- Toast Bildirim Stilleri --- */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  top: auto;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.toast {
  display: flex;
  align-items: center;
  padding: 1rem 1.5rem;
  border-radius: 1rem;
  background: rgba(29, 29, 31, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  color: white;
  font-size: 0.9rem;
  opacity: 0;
  transform: translateY(100%);
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.toast.success { border-left: 4px solid #34c759; } 
.toast.error { border-left: 4px solid #ff3b30; } 

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* --- Aktif Navigasyon Linki --- */
.nav-link.active {
  color: #1d1d1f;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
}