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

:root {
  --primary-color: #4299e1;
  --primary-dark: #3182ce;
  --secondary-color: #4a5568;
  --accent-color: #ed8936;
  --light-color: #f7fafc;
  --dark-color: #2d3748;
  --success-color: #48bb78;
  --warning-color: #ecc94b;
  --danger-color: #f56565;
  --gray-light: #e2e8f0;
  --gray: #a0aec0;
  --border-radius: 8px;
  --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

body {
  font-family: 'Poppins', sans-serif;
  line-height: 1.6;
  color: var(--dark-color);
  background-color: #fff;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 1rem;
}

.section-title {
  text-align: center;
  margin-bottom: 1rem;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--primary-color);
}

.section-subtitle {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem;
  color: var(--secondary-color);
}

.text-center {
  text-align: center;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 500;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-family: inherit;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--box-shadow);
}

.btn-secondary {
  background-color: white;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--box-shadow);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

.btn-login {
  padding: 8px 20px;
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.btn-login:hover {
  background-color: var(--primary-color);
  color: white;
}

/* Header & Navigation */
header {
  background-color: white;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.logo i {
  margin-right: 10px;
  font-size: 1.8rem;
}

nav {
  display: flex;
  align-items: center;
}

nav a {
  margin-left: 2rem;
  text-decoration: none;
  color: var(--dark-color);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

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

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

nav a.active::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary-color);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--dark-color);
  margin: 3px 0;
  transition: var(--transition);
}

/* Hero Section */
.hero {
  display: flex;
  align-items: center;
  padding: 4rem 2rem;
  background: linear-gradient(135deg, #f0f7ff 0%, #e6f2ff 100%);
  min-height: 80vh;
}

.hero-content {
  flex: 1;
  max-width: 600px;
  padding-right: 2rem;
}

.hero-content h1 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: var(--dark-color);
}

.hero-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: var(--secondary-color);
}

.hero-buttons {
  display: flex;
  gap: 1rem;
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image img {
  max-width: 100%;
  border-radius: 10px;
}

/* Courses Section */
.courses {
  padding: 5rem 0;
  background-color: var(--light-color);
}

.category {
  margin-bottom: 3rem;
}

.category h3 {
  margin-bottom: 2rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--gray-light);
  color: var(--primary-color);
}

.course-boxes {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.course-card {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  text-align: center;
}

.course-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.course-icon {
  width: 70px;
  height: 70px;
  background-color: rgba(66, 153, 225, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.course-icon i {
  font-size: 1.8rem;
  color: var(--primary-color);
}

.course-card h4 {
  margin-bottom: 1rem;
  color: var(--dark-color);
}

.course-card p {
  color: var(--secondary-color);
  margin-bottom: 1.5rem;
}

/* Features Section */
.features {
  padding: 5rem 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.feature-card {
  text-align: center;
  padding: 2rem 1.5rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

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

.feature-icon {
  width: 80px;
  height: 80px;
  background-color: rgba(66, 153, 225, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.feature-icon i {
  font-size: 2rem;
  color: var(--primary-color);
}

.feature-card h3 {
  margin-bottom: 1rem;
}

.feature-card p {
  color: var(--secondary-color);
}

/* News Section */
.news {
  padding: 5rem 0;
  background-color: var(--light-color);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.news-card {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.news-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.news-date {
  color: var(--primary-color);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.news-card h3 {
  margin-bottom: 1rem;
}

.news-card p {
  color: var(--secondary-color);
  margin-bottom: 1.5rem;
}

.read-more {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
}

.read-more i {
  margin-left: 5px;
  transition: var(--transition);
}

.read-more:hover i {
  transform: translateX(5px);
}

/* About Section */
.about {
  padding: 5rem 0;
}

.about-content {
  display: flex;
  align-items: center;
  gap: 4rem;
}

.about-text {
  flex: 1;
}

.about-image {
  flex: 1;
}

.about-image img {
  max-width: 100%;
  border-radius: var(--border-radius);
}

.stats {
  display: flex;
  justify-content: space-between;
  margin: 2rem 0;
}

.stat {
  text-align: center;
}

.stat h3 {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.stat p {
  color: var(--secondary-color);
  margin-bottom: 0;
}

/* Footer */
footer {
  background-color: var(--dark-color);
  color: white;
  padding: 4rem 0 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.footer-section h3 {
  margin-bottom: 1.5rem;
  color: white;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-section h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--primary-color);
}

.footer-section p {
  color: #cbd5e0;
  margin-bottom: 1.5rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 0.8rem;
}

.footer-section ul li a {
  color: #cbd5e0;
  text-decoration: none;
  transition: var(--transition);
}

.footer-section ul li a:hover {
  color: white;
  padding-left: 5px;
}

.footer-section ul li i {
  margin-right: 10px;
  color: var(--primary-color);
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: white;
  text-decoration: none;
  transition: var(--transition);
}

.social-links a:hover {
  background-color: var(--primary-color);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid #4a5568;
  color: #cbd5e0;
}

/* Responsive Design */
@media (max-width: 992px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding: 3rem 1rem;
  }
  
  .hero-content {
    padding-right: 0;
    margin-bottom: 2rem;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .about-content {
    flex-direction: column;
  }
  
  .stats {
    justify-content: space-around;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }
  
  nav {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: white;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 2rem;
    transition: var(--transition);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
  }
  
  nav.active {
    left: 0;
  }
  
  nav a {
    margin: 1rem 0;
    font-size: 1.2rem;
  }
  
  .hero-content h1 {
    font-size: 2.2rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 250px;
  }
  
  .stats {
    flex-direction: column;
    gap: 1.5rem;
  }
}

@media (max-width: 576px) {
  .navbar {
    padding: 1rem;
  }
  
  .course-boxes, .features-grid, .news-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.7rem;
  }
}