/* Global Styles for AponyGroup Website
 * Created: 2024-12-19 15:40:00
 * Professional business design enhancements
 * Updated: 2025-01-27 - 添加可访问性和 SEO 优化样式
 */

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

/* 跳过链接样式 - 可访问性优化 - 2025-01-27 */
.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;
}

.sr-only:focus {
  position: static;
  width: auto;
  height: auto;
  padding: 0.5rem 1rem;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* Fade in animation */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* Enhanced card hover effects */
.card-hover {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.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);
}

/* Image loading placeholder */
.image-placeholder {
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* Enhanced shadow utilities */
.shadow-professional {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.shadow-professional-lg {
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Gradient text */
.gradient-text {
  background: linear-gradient(135deg, #FF6B35 0%, #E55A2B 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Professional button styles */
.btn-primary {
  background: linear-gradient(135deg, #FF6B35 0%, #E55A2B 100%);
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #E55A2B 0%, #CC4A21 100%);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(255, 107, 53, 0.3);
}

/* Image overlay effects */
.image-overlay {
  position: relative;
  overflow: hidden;
}

.image-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.4) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 1;
}

.image-overlay:hover::before {
  opacity: 1;
}

/* Professional section spacing */
.section-spacing {
  padding-top: 6rem;
  padding-bottom: 6rem;
}

@media (min-width: 768px) {
  .section-spacing {
    padding-top: 8rem;
    padding-bottom: 8rem;
  }
}

/* Text selection styling */
::selection {
  background-color: rgba(255, 107, 53, 0.2);
  color: #1e293b;
}

/* Focus styles for accessibility */
*:focus-visible {
  outline: 2px solid #FF6B35;
  outline-offset: 2px;
}

/* Smooth transitions for interactive elements */
a, button {
  transition: all 0.2s ease;
}

/* Professional typography improvements */
h1, h2, h3, h4, h5, h6 {
  letter-spacing: -0.02em;
  line-height: 1.2;
}

/* Enhanced card styles */
.card-enhanced {
  background: white;
  border-radius: 1rem;
  border: 1px solid rgba(226, 232, 240, 0.8);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-enhanced:hover {
  border-color: rgba(255, 107, 53, 0.3);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  transform: translateY(-2px);
}

/* Loading skeleton */
.skeleton {
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: 0.5rem;
}

/* Professional badge styles */
.badge-professional {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Image aspect ratio containers */
.aspect-ratio-container {
  position: relative;
  width: 100%;
  padding-bottom: 75%; /* 4:3 aspect ratio */
  overflow: hidden;
}

.aspect-ratio-container img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}