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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
}

.container {
  min-height: 100vh;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  overflow: hidden;
  background-color: #0f172a;
}

.background {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom right, #1e3a8a, #0f172a);
}

.grid-pattern {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjAwIiBoZWlnaHQ9IjIwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48ZGVmcz48cGF0dGVybiBpZD0iZ3JpZCIgd2lkdGg9IjQwIiBoZWlnaHQ9IjQwIiBwYXR0ZXJuVW5pdHM9InVzZXJTcGFjZU9uVXNlIj48cGF0aCBkPSJNIDQwIDAgTCAwIDAgMCA0MCIgZmlsbD0ibm9uZSIgc3Ryb2tlPSJyZ2JhKDI1NSwgMjU1LCAyNTUsIDAuMSkiIHN0cm9rZS13aWR0aD0iMSIvPjwvcGF0dGVybj48L2RlZnM+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0idXJsKCNncmlkKSIvPjwvc3ZnPg==");
  opacity: 0.2;
  animation: pulse 2s infinite;
}

.main-company {
  margin-bottom: 5rem;
  width: 100%;
  max-width: 28rem;
  text-align: center;
  position: relative;
  z-index: 10;
}

.main-logo {
  width: 100%;
  max-width: 400px;
  height: auto;
  margin: 0 auto 1rem;
}

.main-company h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: white;
  margin-bottom: 0.5rem;
}

.main-company p {
  color: #d1d5db;
}

.subsidiaries {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  width: 100%;
  max-width: 56rem;
  position: relative;
  z-index: 10;
  padding: 0 1rem;
}

.company-card {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(4px);
  border-radius: 0.5rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.company-card:hover {
  transform: scale(1.05);
  background-color: white;
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.2);
}

.company-card:active {
  transform: scale(0.95);
}

.company-card img {
  max-height: 4rem;
  width: auto;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.2;
  }
  50% {
    opacity: 0.3;
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeIn 0.5s ease forwards;
}

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

/* Responsive tasarım */
@media (min-width: 640px) {
  .subsidiaries {
    grid-template-columns: repeat(2, 1fr);
    padding: 0 1.5rem;
  }
}

@media (min-width: 768px) {
  .subsidiaries {
    grid-template-columns: repeat(3, 1fr);
    padding: 0 2rem;
  }
}