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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow: hidden;
  position: relative;
}

.background-decoration {
  position: absolute;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.circle {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  animation: float 20s infinite ease-in-out;
}

.circle-1 {
  width: 300px;
  height: 300px;
  top: -100px;
  left: -100px;
  animation-delay: 0s;
}

.circle-2 {
  width: 200px;
  height: 200px;
  bottom: -50px;
  right: -50px;
  animation-delay: 5s;
}

.circle-3 {
  width: 150px;
  height: 150px;
  top: 50%;
  right: 10%;
  animation-delay: 10s;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-30px) scale(1.05);
  }
}

.container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1000px;
  animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.header {
  text-align: center;
  margin-bottom: 50px;
}

.logo {
  height: 60px;
  margin-bottom: 20px;
  filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

.header h1 {
  font-size: 42px;
  color: white;
  margin-bottom: 12px;
  font-weight: 700;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.header p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 400;
}

.platforms {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.platform-card {
  background: white;
  border-radius: 20px;
  padding: 40px 30px;
  text-align: center;
  text-decoration: none;
  color: #333;
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  cursor: pointer;
}

.platform-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
  opacity: 0;
  transition: opacity 0.4s;
}

.platform-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.platform-card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 25px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: all 0.4s;
  position: relative;
  z-index: 1;
}

.platform-card:hover .card-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.platform-card h2 {
  font-size: 24px;
  margin-bottom: 12px;
  color: #333;
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.platform-card p {
  font-size: 15px;
  color: #666;
  line-height: 1.6;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.card-arrow {
  font-size: 32px;
  color: #667eea;
  font-weight: bold;
  transition: transform 0.4s;
  position: relative;
  z-index: 1;
}

.platform-card:hover .card-arrow {
  transform: translateX(10px);
}

/* Specific styling for each platform */
.platform-management .card-icon {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.platform-store .card-icon {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.platform-store:hover::before {
  background: linear-gradient(135deg, rgba(240, 147, 251, 0.1) 0%, rgba(245, 87, 108, 0.1) 100%);
}

.platform-store .card-arrow {
  color: #f5576c;
}

.footer {
  text-align: center;
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  margin-top: 30px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .header h1 {
    font-size: 32px;
  }

  .header p {
    font-size: 16px;
  }

  .platforms {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .platform-card {
    padding: 35px 25px;
  }

  .card-icon {
    width: 70px;
    height: 70px;
  }

  .card-icon svg {
    width: 40px;
    height: 40px;
  }

  .platform-card h2 {
    font-size: 22px;
  }
}

@media (max-width: 480px) {
  body {
    padding: 15px;
  }

  .logo {
    height: 45px;
  }

  .header h1 {
    font-size: 28px;
  }

  .platform-card {
    padding: 30px 20px;
  }
}