/* ===== Professional Enhancements for APK Center ===== */

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

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

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

/* Glass Morphism Effect */
.glass-card {
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 16px;
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
}

/* Enhanced Cards */
.app-card {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  animation: fadeInUp 0.6s ease-out;
}

.app-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(99, 102, 241, 0.2);
}

/* Gradient Text */
.gradient-text {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Enhanced Buttons */
.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  padding: 12px 28px;
  border-radius: 12px;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
}

/* Stats Counter Animation */
.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Hero Section Enhancement */
.hero-section {
  background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
  animation: pulse 4s ease-in-out infinite;
}

/* Feature Cards */
.feature-card {
  background: white;
  border-radius: 20px;
  padding: 2rem;
  transition: all 0.4s ease;
  border: 1px solid rgba(102, 126, 234, 0.1);
}

.feature-card:hover {
  border-color: rgba(102, 126, 234, 0.3);
  box-shadow: 0 15px 35px rgba(102, 126, 234, 0.15);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

/* Navigation Enhancement */
.nav-link {
  position: relative;
  transition: color 0.3s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  transition: width 0.3s ease;
}

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

/* Search Box Enhancement */
.search-box {
  background: white;
  border-radius: 50px;
  padding: 8px 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border: 2px solid transparent;
  transition: all 0.3s ease;
}

.search-box:focus-within {
  border-color: #667eea;
  box-shadow: 0 4px 25px rgba(102, 126, 234, 0.2);
}

/* Category Pills */
.category-pill {
  background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
  padding: 8px 20px;
  border-radius: 50px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.category-pill:hover {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  transform: scale(1.05);
}

/* Loading Skeleton */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 8px;
}

/* Dark Mode Enhancements */
.dark .glass-card {
  background: rgba(30, 30, 30, 0.7);
  border-color: rgba(255, 255, 255, 0.1);
}

.dark .feature-card {
  background: rgba(30, 30, 30, 0.8);
  border-color: rgba(102, 126, 234, 0.2);
}

.dark .hero-section {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

/* Responsive Improvements */
@media (max-width: 768px) {
  .stat-number {
    font-size: 1.8rem;
  }
  
  .feature-card {
    padding: 1.5rem;
  }
}

/* Scroll Reveal Animation Classes */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

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

/* Footer Enhancement */
.footer {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  color: white;
}

.footer a {
  transition: color 0.3s ease;
}

.footer a:hover {
  color: #667eea;
}