/* =========================
   GLOBAL STYLES
========================= */

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

body {
  font-family: 'Segoe UI', sans-serif;
  color: #fff;

  background: linear-gradient(
      rgba(0, 0, 0, 0.75),
      rgba(0, 0, 0, 0.85)
    ),
    url('images/train.jpg');

  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

/* =========================
   NAVBAR
========================= */

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;

  padding: 15px 40px;

  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(10px);

  position: sticky;
  top: 0;
  z-index: 1000;
}

.logo img {
  height: 50px;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 25px;
}

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

.nav-links a:hover {
  color: #00c6ff;
}

/* =========================
   HERO SECTION
========================= */

.hero {
  text-align: center;
  padding: 120px 20px;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 20px;
}

.hero p {
  font-size: 18px;
  opacity: 0.9;
}

/* =========================
   BUTTON
========================= */

.btn {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 30px;

  background: linear-gradient(45deg, #00c6ff, #0072ff);
  color: #fff;

  border: none;
  border-radius: 25px;
  cursor: pointer;

  transition: 0.3s;
}

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

/* =========================
   SECTION (GLASS EFFECT)
========================= */

section {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);

  padding: 60px 30px;
  margin: 40px;

  border-radius: 15px;
}

/* =========================
   CARDS (Courses / Services)
========================= */

.card-container {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.card {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);

  padding: 25px;
  border-radius: 12px;

  width: 280px;
  text-align: center;

  transition: 0.3s;
}

.card:hover {
  transform: translateY(-10px);
}

.card h3 {
  margin-bottom: 10px;
}

.card p {
  font-size: 14px;
  opacity: 0.9;
}

/* =========================
   CONTACT FORM
========================= */

form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

input, textarea {
  padding: 12px;
  border-radius: 8px;
  border: none;

  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

input::placeholder,
textarea::placeholder {
  color: #ddd;
}

textarea {
  resize: none;
  height: 120px;
}

/* =========================
   FOOTER
========================= */

footer {
  text-align: center;
  padding: 20px;

  background: rgba(0, 0, 0, 0.7);
  margin-top: 40px;
}

/* =========================
   RESPONSIVE
========================= */

@media (max-width: 768px) {

  .navbar {
    flex-direction: column;
    gap: 10px;
  }

  .nav-links {
    flex-direction: column;
    align-items: center;
  }

  .hero h1 {
    font-size: 32px;
  }

  section {
    margin: 20px;
    padding: 40px 20px;
  }

}