/* ===== RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', sans-serif;
  color: #0a1628;
  background: #fff;
  overflow-x: hidden;
}

/* ===== NAV ===== */
#nav {
  background: transparent;
  transition: background 0.4s ease, box-shadow 0.4s ease;
}

#nav.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(10, 22, 40, 0.08);
}

.nav-logo-text {
  color: #0a1628;
  transition: color 0.3s ease;
}

#nav.scrolled .nav-logo-text {
  color: #0a1628;
}

.nav-link {
  color: rgba(10, 22, 40, 0.6);
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: #0a1628;
}

#nav.scrolled .nav-link {
  color: rgba(10, 22, 40, 0.6);
}

#nav.scrolled .nav-link:hover {
  color: #0a1628;
}

/* ===== MOBILE MENU ===== */
.mobile-link {
  transition: color 0.2s ease;
}

.mobile-link:hover {
  color: #34d4a8;
}

/* ===== ANIMATIONS ===== */
@keyframes float-slow {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(3deg); }
}

@keyframes float-medium {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

@keyframes float-fast {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-10px) rotate(5deg); }
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes bounce-slow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes ping-slow {
  0% { transform: scale(1); opacity: 1; }
  75%, 100% { transform: scale(1.8); opacity: 0; }
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slide-in-left {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slide-in-right {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scale-in {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-float-slow { animation: float-slow 8s ease-in-out infinite; }
.animate-float-medium { animation: float-medium 5s ease-in-out infinite; }
.animate-float-fast { animation: float-fast 4s ease-in-out infinite; }
.animate-spin-slow { animation: spin-slow 20s linear infinite; }
.animate-bounce-slow { animation: bounce-slow 3s ease-in-out infinite; }
.animate-ping-slow { animation: ping-slow 2.5s ease-in-out infinite; }

.animate-fade-in-up {
  animation: fade-in-up 0.8s ease forwards;
  opacity: 0;
}

.animation-delay-200 { animation-delay: 0.2s; }
.animation-delay-400 { animation-delay: 0.4s; }
.animation-delay-600 { animation-delay: 0.6s; }
.animation-delay-800 { animation-delay: 0.8s; }

/* Scroll-triggered animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* Staggered children */
.stagger-children .reveal:nth-child(1) { transition-delay: 0.05s; }
.stagger-children .reveal:nth-child(2) { transition-delay: 0.1s; }
.stagger-children .reveal:nth-child(3) { transition-delay: 0.15s; }
.stagger-children .reveal:nth-child(4) { transition-delay: 0.2s; }
.stagger-children .reveal:nth-child(5) { transition-delay: 0.25s; }
.stagger-children .reveal:nth-child(6) { transition-delay: 0.3s; }

/* ===== SERVICE CARDS ===== */
.service-card {
  transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

.service-card:hover {
  transform: translateY(-4px);
}

/* ===== GALLERY ===== */
.gallery-item {
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.gallery-item:hover {
  box-shadow: 0 20px 60px rgba(10, 22, 40, 0.15);
}

/* ===== TESTIMONIALS ===== */
.testimonial-card {
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.testimonial-card:hover {
  transform: translateY(-4px);
}

/* ===== BUTTONS ===== */
a, button {
  -webkit-tap-highlight-color: transparent;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* ===== FOCUS ===== */
:focus-visible {
  outline: 2px solid #34d4a8;
  outline-offset: 2px;
}

/* ===== MOBILE MENU TRANSITIONS ===== */
#mobile-menu {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#mobile-menu.open {
  transform: translateX(0);
}

/* ===== UTILITY ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}