body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: #0a0a0a;
  color: #f5f7ff;
  font-family: Arial, sans-serif;
  text-align: center;
  padding: 2rem;
}

h1 {
  font-size: 3rem;
  color: #4f7cff;
  margin-bottom: 0.5rem;
}

h2 {
  font-size: 1.2rem;
  font-weight: normal;
  color: #cbd5e1;
}

.lang-selector {
  position: absolute;
  top: 1rem;
  right: 1rem;
  display: flex;
  gap: 0.5rem;
}

.lang-btn {
  display: inline-block;
  background: transparent;
  border: 1px solid #4f7cff;
  color: #4f7cff;
  padding: 5px 12px;
  border-radius: 20px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s ease;
  font-weight: 500;
  font-size: 0.8rem;
}

.lang-btn.active {
  background: #4f7cff;
  color: white;
}

.lang-btn:hover {
  background: #4f7cff;
  color: white;
  transform: scale(1.05);
}