/* Custom Styles for Nanfeng Development Website */

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

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

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

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

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

/* Selection color */
::selection {
  background-color: #2563eb;
  color: white;
}

/* Input focus styles */
input:focus,
select:focus,
textarea:focus {
  outline: none;
}

/* Backdrop blur fallback */
@supports not ((backdrop-filter: blur(10px)) or (-webkit-backdrop-filter: blur(10px))) {
  .backdrop-blur-lg,
  .backdrop-blur {
    background-color: rgba(255, 255, 255, 0.95);
  }
}

/* Custom animations */
@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(2rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

.animate-slide-up {
  animation: slide-up 0.8s ease-out forwards;
}

.animate-fade-in {
  animation: fade-in 0.8s ease-out forwards;
}

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

/* Transition delays for staggered animations */
.delay-100 {
  animation-delay: 0.1s;
}

.delay-200 {
  animation-delay: 0.2s;
}

.delay-300 {
  animation-delay: 0.3s;
}

.delay-400 {
  animation-delay: 0.4s;
}

.delay-500 {
  animation-delay: 0.5s;
}

/* Card hover effects */
.card-hover {
  transition: all 0.3s ease;
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Gradient text */
.gradient-text {
  background: linear-gradient(to right, #2563eb, #4f46e5);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Glass morphism effect */
.glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Dark mode glass */
.glass-dark {
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Responsive typography */
@media (max-width: 640px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  h3 {
    font-size: 1.25rem;
  }
}

/* Hero section animations */
.hero-content > * {
  opacity: 0;
  animation: slide-up 0.8s ease-out forwards;
}

.hero-content > *:nth-child(1) { animation-delay: 0.1s; }
.hero-content > *:nth-child(2) { animation-delay: 0.2s; }
.hero-content > *:nth-child(3) { animation-delay: 0.3s; }
.hero-content > *:nth-child(4) { animation-delay: 0.4s; }

/* Service card animations */
.service-card {
  opacity: 0;
  animation: slide-up 0.6s ease-out forwards;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }

/* Product card hover */
.product-card {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card:hover {
  transform: translateY(-8px) scale(1.01);
}

/* Nav link active state */
.nav-link.active {
  color: #2563eb;
  font-weight: 500;
}

/* Icon pulse */
@keyframes pulse-ring {
  0% {
    transform: scale(0.8);
    opacity: 1;
  }
  100% {
    transform: scale(2);
    opacity: 0;
  }
}

.pulse-ring {
  position: relative;
}

.pulse-ring::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: inherit;
  border: 2px solid currentColor;
  animation: pulse-ring 1.5s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
}

/* Smooth image loading */
img {
  transition: opacity 0.3s ease;
}

img.loading {
  opacity: 0;
}

img.loaded {
  opacity: 1;
}

/* Print styles */
@media print {
  nav, footer, .contact-form {
    display: none;
  }
  
  body {
    color: black;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus visible styles */
:focus-visible {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

/* Loading shimmer effect */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.shimmer {
  background: linear-gradient(90deg, #f1f5f9 0%, #e2e8f0 50%, #f1f5f9 100%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}