:root {
  --primary-color: #0d6efd;
  --secondary-color: #25d366;
  --dark-color: #212529;
  --light-color: #f8f9fa;
  --text-color: #495057;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Poppins', sans-serif;
  color: var(--text-color);
  line-height: 1.6;
  scroll-behavior: smooth;
}

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

ul {
  list-style: none;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-padding {
  padding: 80px 0;
}

.bg-light {
  background-color: var(--light-color);
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header h2 {
  font-size: 2.2rem;
  color: var(--dark-color);
  margin-bottom: 10px;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: #ffffff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  z-index: 1000;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dark-color);
}

.logo span {
  color: var(--primary-color);
}

.nav-links {
  display: flex;
  gap: 25px;
}

.nav-links a {
  font-weight: 600;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--primary-color);
}

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

/* Hero Section */
.hero {
  height: 100vh;
  background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('https://images.unsplash.com/photo-1449965408869-eaa3f722e40d?auto=format&fit=crop&w=1350&q=80') center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #ffffff;
  padding: 0 20px;
}

.hero-content h1 {
  font-size: 3rem;
  margin-bottom: 20px;
}

.hero-content p {
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto 30px;
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 5px;
  font-weight: 600;
  transition: var(--transition);
}

.btn-primary {
  background-color: var(--primary-color);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #0b5ed7;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.about-card {
  text-align: center;
  padding: 40px 20px;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  transition: var(--transition);
}

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

.about-card i {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 20px;
}

/* Courses Section */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.course-card {
  background: #ffffff;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  position: relative;
}

.course-card.highlight {
  border: 2px solid var(--primary-color);
}

.badge {
  display: inline-block;
  background: var(--light-color);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 15px;
}

/* Contact Section */
.contact-wrapper {
  max-width: 600px;
  margin: 0 auto;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: center;
  padding: 20px;
  background: var(--light-color);
  border-radius: 8px;
  transition: var(--transition);
}

.contact-item:hover {
  background: #e9ecef;
}

.contact-item .icon {
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-right: 20px;
}

.contact-item .whatsapp-icon {
  background: var(--secondary-color);
}

.details h3 {
  font-size: 1rem;
  color: var(--dark-color);
}

.details a {
  font-weight: 600;
  color: var(--dark-color);
}

.details a:hover {
  color: var(--primary-color);
}

/* Footer */
footer {
  background: var(--dark-color);
  color: #ffffff;
  text-align: center;
  padding: 20px 0;
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: #ffffff;
    padding: 20px;
    box-shadow: 0 5px 10px rgba(0,0,0,0.1);
  }

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

  .hamburger {
    display: block;
  }

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