/* Custom Styles & Animations for Queen Eye Clinic */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
  --navy: #163A5F;
  --skyblue: #5DADE2;
  --icewhite: #F8FCFF;
  --softgray: #E5EEF5;
  --emerald: #2BB673;
}

html {
  scroll-behavior: smooth;
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  background-color: var(--icewhite);
  color: #1a202c;
  overflow-x: hidden;
}

/* Glassmorphism Navigation */
.glass-nav {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(229, 238, 245, 0.8);
  transition: all 0.3s ease-in-out;
}

.glass-nav.scrolled {
  background: rgba(22, 58, 95, 0.95);
  backdrop-filter: blur(16px);
  box-shadow: 0 10px 30px rgba(22, 58, 95, 0.15);
}

.glass-nav.scrolled .nav-link {
  color: #F8FCFF;
}

.glass-nav.scrolled .nav-link:hover,
.glass-nav.scrolled .nav-link.active {
  color: #5DADE2;
}

.glass-nav.scrolled .brand-title {
  color: #ffffff;
}

/* Floating animation */
@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

.animate-float-slow {
  animation: float 6s ease-in-out infinite;
}

.animate-float-fast {
  animation: float 4s ease-in-out infinite;
}

/* Pulse Glow animation */
@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 15px rgba(43, 182, 115, 0.3);
  }
  50% {
    box-shadow: 0 0 30px rgba(43, 182, 115, 0.6);
  }
}

.glow-emerald {
  animation: pulseGlow 3s infinite;
}

/* Scroll Reveal Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Stagger delay helpers */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }
.delay-500 { transition-delay: 500ms; }

/* Custom Floating WhatsApp Button */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 99;
  width: 60px;
  height: 60px;
  background-color: #25D366;
  color: white;
  border-radius: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
  transition: all 0.3s ease;
}

.whatsapp-float:hover {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 12px 30px rgba(37, 211, 102, 0.6);
}

/* Lightbox Modal */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(14, 38, 64, 0.9);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.lightbox.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-content {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: 1rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  transform: scale(0.95);
  transition: transform 0.3s ease;
}

.lightbox.active .lightbox-content {
  transform: scale(1);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: #F8FCFF;
}
::-webkit-scrollbar-thumb {
  background: #C3D7EB;
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: #5DADE2;
}

/* Accordion transition */
.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out, opacity 0.3s ease-out;
  opacity: 0;
}

.accordion-content.open {
  opacity: 1;
}

/* Active Nav Item Styling */
.nav-link {
  position: relative;
  font-weight: 600;
  color: #163A5F;
  transition: color 0.3s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: #5DADE2;
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link.active {
  color: #5DADE2;
}