/* Base & Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

body {
  overflow-x: hidden;
}

/* Scroll Reveal — progressive enhancement, hidden by default */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  }
  .reveal.revealed {
    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; }
}

/* Service card hover glow */
.service-card:hover {
  box-shadow: 0 0 40px rgba(52, 211, 153, 0.08);
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #0a1430;
}
::-webkit-scrollbar-thumb {
  background: rgba(167, 243, 208, 0.2);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(167, 243, 208, 0.4);
}

/* Navbar scroll state */
.nav-scrolled {
  background: rgba(10, 20, 48, 0.95) !important;
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* Mobile menu animation */
#mobileMenu {
  animation: slideDown 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Pulse dot */
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}
.animate-pulse {
  animation: pulse-dot 2s ease-in-out infinite;
}

/* Focus visible styles */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid #6ee7b7;
  outline-offset: 2px;
  border-radius: 4px;
}