/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body, html {
  font-family: 'Segoe UI', sans-serif;
  color: #333;
  background-color: #f2f7fc;
  scroll-behavior: smooth;
}

a {
  text-decoration: none;
  color: inherit;
}

/* Navbar */
.navbar {
  background-color: #004080;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
}

.nav-links {
  display: flex;
  gap: 1.2rem;
}

.nav-links a {
  color: #fff;
  text-transform: capitalize;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: 0.3s;
}

.nav-links a.active,
.nav-links a:hover {
  border-color: #ffd700;
}

.menu-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: 4rem 2rem;
  background: linear-gradient(to right, #e0f0ff, #ffffff);
}

.hero-text {
  flex: 1 1 45%;
  max-width: 600px;
}

.hero-text h1 {
  font-size: 3rem;
  color: #004080;
  margin-bottom: 1rem;
}

.hero-text p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: #333;
}

.btn {
  padding: 0.8rem 1.6rem;
  background-color: #ffd700;
  color: #000;
  font-weight: bold;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.btn:hover {
  background-color: #e6b800;
}

.hero-image img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  flex: 1 1 45%;
}

/* Courses Section */
.courses {
  padding: 3rem 2rem;
  text-align: center;
  background-color: #fff;
}

.courses h2 {
  font-size: 2rem;
  color: #004080;
  margin-bottom: 2rem;
}

.course-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.course-card {
  background: #e6f3ff;
  padding: 1.5rem 2rem;
  border-radius: 12px;
  font-weight: bold;
  text-transform: capitalize;
  color: #004080;
  transition: transform 0.3s, background 0.3s;
  box-shadow: 0 6px 10px rgba(0, 0, 0, 0.05);
}

.course-card:hover {
  transform: translateY(-5px);
  background: #d0e9ff;
}

/* Footer */
footer {
  background-color: #004080;
  color: #fff;
  text-align: center;
  padding: 2rem;
  margin-top: 3rem;
}

footer .socials {
  margin-top: 1rem;
}

footer .socials a img {
  width: 24px;
  margin: 0 0.5rem;
  vertical-align: middle;
  filter: brightness(90%);
  transition: filter 0.3s;
}

footer .socials a img:hover {
  filter: brightness(120%);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    text-align: center;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    background-color: #004080;
    width: 100%;
    position: absolute;
    top: 70px;
    left: 0;
    padding: 1rem 0;
  }

  .nav-links a {
    margin: 0.5rem 0;
    text-align: center;
  }

  .nav-links.show {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }
}