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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background-color: #f5f5f5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  width: 100%;
}

.header {
  background-color: #005CA9;
  color: white;
  padding: 30px;
  text-align: center;
  margin-bottom: 80px;
}

.header h1 {
  font-size: 36px;
  font-weight: bold;
}

.buttons-container {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 80px;
}

.classes-container {
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.pairs-container {
  padding: 0 40px;
  margin-bottom: 120px;
}

.pairs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1400px;
  margin: 0 auto;
}

.button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 400px;
  padding: 35px;
  border-radius: 12px;
  text-decoration: none;
  color: white;
  font-weight: bold;
  font-size: 28px;
  transition: transform 0.2s;
  white-space: nowrap;
}

.button:hover {
  transform: scale(1.05);
}

.button-blue {
  background-color: #005CA9;
}

.button-orange {
  background-color: #FF6B00;
}

.robot-icon {
  width: 40px;
  height: 40px;
  margin-right: 16px;
}

.hexagon-container {
  display: flex;
  justify-content: flex-end;
  padding: 40px;
  position: fixed;
  bottom: 0;
  right: 0;
  z-index: 100;
}

.logo {
  width: 150px;
  height: auto;
  opacity: 0.5;
}