/* Base & Utilities */
html { scroll-behavior: smooth; }
body { overflow-x: hidden; }

/* Custom scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f1f5f9; }
::-webkit-scrollbar-thumb { background: #94a3b8; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #64748b; }

/* Nav transitions */
#nav.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

/* Hero text animation */
.hero-reveal {
  opacity: 0;
  transform: translateY(30px);
  animation: heroIn 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.hero-reveal:nth-child(2) { animation-delay: 0.15s; }
.hero-reveal:nth-child(3) { animation-delay: 0.3s; }
.hero-reveal:nth-child(4) { animation-delay: 0.45s; }

@keyframes heroIn {
  to { opacity: 1; transform: translateY(0); }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

/* Service card hover lift */
.group:hover .group-hover\\:scale-110 { transform: scale(1.1); }

/* Image hover zoom */
.group:hover img { transform: scale(1.05); }

/* Smooth transitions for gallery images */
.rounded-2xl.overflow-hidden { overflow: hidden; }
.rounded-2xl.overflow-hidden img { transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1); }

/* Form focus ring */
input:focus, select:focus, textarea:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

/* Mobile menu animation */
#mobileMenu {
  animation: slideDown 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Back to top */
#backToTop.show {
  opacity: 1 !important;
  pointer-events: auto !important;
}

/* Selection color */
::selection { background: rgba(13, 148, 136, 0.2); color: #0f172a; }