/* EM SEA Corporate Website Styles */

/* Base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: #1f2937;
  background-color: #ffffff;
}

/* Navigation active state */
.nav-link.active {
  color: #2563eb;
  font-weight: 600;
}

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

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

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #a1a1a1;
}

/* Form focus states */
input:focus, textarea:focus {
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Button loading state */
.btn-loading {
  position: relative;
  color: transparent !important;
}

.btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid transparent;
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Hero section animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-animate {
  animation: fadeInUp 0.8s ease-out forwards;
}

/* Card hover effects */
.card-hover {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Success/Error message styles */
.form-success {
  background-color: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.form-error {
  background-color: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

/* Mobile menu animation */
#mobile-menu {
  transition: all 0.3s ease-in-out;
  max-height: 0;
  overflow: hidden;
}

#mobile-menu.show {
  max-height: 300px;
}

/* Logo animation on hover */
.logo-hover:hover svg {
  transform: scale(1.05);
  transition: transform 0.3s ease;
}

/* Section reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease-out;
}

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

/* Gradient text effect */
.gradient-text {
  background: linear-gradient(135deg, #2563eb 0%, #f97316 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .hero-content {
    text-align: center;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
}

/* Print styles */
@media print {
  nav, footer, .no-print {
    display: none !important;
  }
  
  main {
    padding-top: 0 !important;
  }
}

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

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

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

/* Chinese text optimization */
:lang(zh), :lang(zh-Hant) {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  letter-spacing: 0.02em;
}