/* Сброс базовых стилей */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, sans-serif;
  background: #0a0f1f;
  color: #f1f1f1;
  line-height: 1.6;
}

/* Хедер */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  background: linear-gradient(90deg, #0d1b2a, #1b263b);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.logo {
  font-size: 1.3rem;
  font-weight: bold;
  color: #00c8ff;
}

nav {
  display: flex;
  gap: 20px;
}

nav a {
  text-decoration: none;
  color: #f1f1f1;
  font-weight: 500;
  transition: 0.3s;
}

nav a:hover {
  color: #00c8ff;
}

/* Переключатель языка */
.lang-switch {
  display: flex;
  gap: 8px;
}

.lang-switch button {
  background: #1b263b;
  border: 1px solid #00c8ff;
  color: #f1f1f1;
  padding: 5px 12px;
  border-radius: 5px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.lang-switch button:hover {
  background: #00c8ff;
  color: #0a0f1f;
}

.lang-switch button.active {
  background: #00c8ff;
  color: #0a0f1f;
  font-weight: bold;
}

/* Герой */
.hero {
  text-align: center;
  padding: 80px 20px;
  background: url("bg.jpg") center/cover no-repeat;
  background-attachment: fixed;
}

.hero h1 {
  font-size: 2.5rem;
  color: #00c8ff;
}

.hero p {
  font-size: 1.2rem;
  margin-top: 10px;
}

/* Карточки */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  padding: 40px 20px;
}

.card {
  background: #1b263b;
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 200, 255, 0.2);
  transition: transform 0.3s;
}

.card:hover {
  transform: translateY(-5px);
}

.card .icon {
  font-size: 2rem;
  margin-bottom: 10px;
  color: #00c8ff;
}

.card h3 {
  font-size: 1.1rem;
}

/* Выпадающие блоки */
.dropdown {
  padding: 20px;
  text-align: center;
}

.dropdown-btn {
  background: #00c8ff;
  border: none;
  padding: 12px 20px;
  font-size: 1rem;
  border-radius: 6px;
  cursor: pointer;
  transition: 0.3s;
}

.dropdown-btn:hover {
  background: #009ec2;
}

.dropdown-content {
  display: none;
  background: #1b263b;
  margin-top: 15px;
  padding: 15px;
  border-radius: 8px;
  text-align: left;
}

/* Контакты */
.contact {
  text-align: center;
  padding: 40px 20px;
}

.telegram-btn {
  display: inline-block;
  background: #0088cc;
  color: #fff;
  padding: 14px 20px;
  font-size: 1.1rem;
  border-radius: 6px;
  text-decoration: none;
  transition: 0.3s;
  width: 100%;
  max-width: 400px;
}

.telegram-btn:hover {
  background: #0077b3;
}

/* Футер */
footer {
  text-align: center;
  padding: 20px;
  background: #0d1b2a;
  margin-top: 40px;
  font-size: 0.9rem;
  color: #aaa;
}

/* Адаптив */
@media (max-width: 768px) {
  header {
    flex-direction: column;
    gap: 10px;
  }

  nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }
}