/* Design Tokens */
:root {
  --background: #ffffff;
  --foreground: #475569;
  --card: #f1f5f9;
  --card-foreground: #374151;
  --popover: #ffffff;
  --popover-foreground: #374151;
  --primary: #059669;
  --primary-foreground: #ffffff;
  --secondary: #10b981;
  --secondary-foreground: #ffffff;
  --muted: #f1f5f9;
  --muted-foreground: #374151;
  --accent: #10b981;
  --accent-foreground: #ffffff;
  --destructive: #ea580c;
  --destructive-foreground: #ffffff;
  --border: #d1d5db;
  --input: #ffffff;
  --ring: rgba(5, 150, 105, 0.5);
  --radius: 0.5rem;
  --sidebar: #f1f5f9;
  --sidebar-foreground: #374151;
  --sidebar-primary: #059669;
  --sidebar-primary-foreground: #ffffff;
  --sidebar-accent: #10b981;
  --sidebar-accent-foreground: #ffffff;
  --sidebar-border: #d1d5db;
  --sidebar-ring: rgba(5, 150, 105, 0.5);
}

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

body {
  font-family: "Manrope", sans-serif;
  line-height: 1.6;
  color: var(--foreground);
  background-color: var(--background);
}

.container {
  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;
}
h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1rem;
  line-height: 1.6;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background-color: #047857;
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--secondary);
  color: var(--secondary-foreground);
}

.btn-secondary:hover {
  background-color: #059669;
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  background-color: var(--primary);
  color: var(--primary-foreground);
}

.btn-large {
  padding: 16px 32px;
  font-size: 1.1rem;
}

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

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-brand a {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--foreground);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

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

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

.nav-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--foreground);
  margin: 3px 0;
  transition: 0.3s;
}

/* Hero Section */
.hero {
  padding: 120px 0 80px;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

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

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--muted-foreground);
  margin-bottom: 2rem;
}

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

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}

/* Featured Courses */
.featured-courses {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  color: var(--foreground);
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--muted-foreground);
}

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

.course-card {
  background-color: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.course-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.course-image {
  position: relative;
  overflow: hidden;
}

.course-image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.course-level {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background-color: var(--primary);
  color: var(--primary-foreground);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
}

.course-content {
  padding: 1.5rem;
}

.course-content h3 {
  color: var(--foreground);
  margin-bottom: 1rem;
}

.course-content p {
  color: var(--muted-foreground);
  margin-bottom: 1.5rem;
}

.course-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.duration {
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

.price {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary);
}

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

/* About Teacher */
.about-teacher {
  padding: 80px 0;
  background-color: var(--muted);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.teacher-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.teacher-info h2 {
  color: var(--foreground);
  margin-bottom: 0.5rem;
}

.teacher-info h3 {
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.teacher-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin: 2rem 0;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}

.stat-label {
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

.teacher-qualifications h4 {
  color: var(--foreground);
  margin-bottom: 1rem;
}

.teacher-qualifications ul {
  list-style: none;
}

.teacher-qualifications li {
  margin-bottom: 0.5rem;
  color: var(--muted-foreground);
}

.teacher-qualifications i {
  color: var(--primary);
  margin-right: 0.5rem;
}

/* Institute Info */
.institute-info {
  padding: 80px 0;
}

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

.feature-card {
  text-align: center;
  padding: 2rem;
  background-color: var(--card);
  border-radius: var(--radius);
  transition: transform 0.3s ease;
}

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

.feature-icon {
  font-size: 3rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.feature-card h3 {
  color: var(--foreground);
  margin-bottom: 1rem;
}

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

/* Testimonials */
.testimonials {
  padding: 80px 0;
  background-color: var(--muted);
}

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

.testimonial-card {
  background-color: var(--background);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.testimonial-content p {
  font-style: italic;
  color: var(--muted-foreground);
  margin-bottom: 1.5rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testimonial-author img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
}

.author-info h4 {
  color: var(--foreground);
  margin-bottom: 0.25rem;
}

.author-info span {
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

/* Contact Section */
.contact-section {
  padding: 80px 0;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-details {
  margin-top: 2rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-item i {
  font-size: 1.5rem;
  color: var(--primary);
  width: 30px;
}

.contact-item h4 {
  color: var(--foreground);
  margin-bottom: 0.25rem;
}

.contact-item p {
  color: var(--muted-foreground);
  margin: 0;
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  background-color: var(--input);
  color: var(--foreground);
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--ring);
}

/* Footer */
.footer {
  background-color: var(--foreground);
  color: var(--background);
  padding: 3rem 0 1rem;
}

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

.footer-section h3,
.footer-section h4 {
  color: var(--background);
  margin-bottom: 1rem;
}

.footer-section p {
  color: #cbd5e1;
  margin-bottom: 1rem;
}

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

.social-links a {
  color: var(--background);
  font-size: 1.5rem;
  transition: color 0.3s ease;
}

.social-links a:hover {
  color: var(--secondary);
}

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

.footer-section ul li {
  margin-bottom: 0.5rem;
}

.footer-section ul li a {
  color: #cbd5e1;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-section ul li a:hover {
  color: var(--background);
}

.contact-info p {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.contact-info i {
  color: var(--secondary);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid #475569;
  color: #cbd5e1;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--background);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
    padding: 2rem 0;
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

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

  .hero-buttons {
    justify-content: center;
    flex-wrap: wrap;
  }

  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .contact-content {
    grid-template-columns: 1fr;
  }

  .teacher-stats {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .courses-grid {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  .hero {
    padding: 100px 0 60px;
  }

  .hero-text h1 {
    font-size: 1.75rem;
  }

  .btn-large {
    padding: 14px 24px;
    font-size: 1rem;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 0.75rem;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

  .feature-card,
  .testimonial-card {
    padding: 1.5rem;
  }
}