/* CSS Variables */
:root {
  --primary-color: #2563eb;
  --secondary-color: #10b981;
  --accent-color: #f59e0b;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --border-color: #e5e7eb;
  --success-color: #059669;
  --error-color: #dc2626;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header Styles */
.header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.header-logo-title {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
  margin: 0;
}

.header-description {
  font-size: 1rem;
  color: var(--text-secondary);
  text-align: center;
  margin-top: 0.5rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    text-align: center;
  }
  /* Removed flex-direction: column for .header-logo-title */
  .header-title {
    font-size: 1.5rem;
  }
  .header-description {
    font-size: 0.9rem;
  }
}
.logo {
  height: 50px;
  width: auto;
  object-fit: contain;
}

/* Removed .nav and .nav-list styles */

/* Platform Boxes */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  padding: 4rem 0;
}

.platform-box {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2rem;
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.platform-box:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.platform-logo {
  height: 80px;
  width: auto;
  object-fit: contain;
  margin-bottom: 1rem;
}

.platform-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.platform-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

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

.btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background: #059669;
}

.btn-copy {
  background: var(--accent-color);
  color: white;
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
}

.btn-copy:hover {
  background: #d97706;
}

/* Coupon Boxes */
.coupons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.coupon-box {
  background: var(--bg-primary);
  border: 2px dashed var(--accent-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  text-align: center;
  position: relative;
  transition: var(--transition);
}

.coupon-box:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
}

.coupon-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.coupon-code {
  font-family: 'Courier New', monospace;
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary-color);
  background: var(--bg-secondary);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  margin: 1rem 0;
  border: 1px solid var(--border-color);
}

.coupon-description {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

/* Coupon Meta (Timer and Copy Count) */
.coupon-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.coupon-meta .timer {
  color: var(--primary-color);
  font-weight: 600;
}

.coupon-meta .copy-count {
  color: var(--secondary-color);
  font-weight: 600;
}

/* Sections */
.section {
  padding: 3rem 0;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  text-align: center;
}

.section-content {
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
  color: var(--text-secondary);
}

/* Keywords */
.keywords-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.5rem;
  margin: 2rem 0;
}

.keyword-tag {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-size: 0.875rem;
  text-align: center;
  border: 1px solid var(--border-color);
}

/* Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.review-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.review-rating {
  color: var(--accent-color);
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.review-text {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-style: italic;
}

.review-author {
  font-weight: 600;
  color: var(--text-primary);
}

/* Teachers/Educators */
.educators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.educator-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.educator-card:hover {
  box-shadow: var(--shadow-md);
}

.educator-photo {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 1rem;
  border: 3px solid var(--primary-color);
}

.educator-name {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.educator-qualification {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.educator-subject {
  color: var(--primary-color);
  font-weight: 500;
  font-size: 0.875rem;
}

/* Footer */
.footer {
  background: var(--text-primary);
  color: white;
  padding: 3rem 0 1rem;
  margin-top: 4rem;
}

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

.footer-section h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: white;
}

.footer-links {
  list-style: none;
}

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

.footer-links a {
  color: #d1d5db;
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 1rem;
  text-align: center;
  color: #9ca3af;
  font-size: 0.875rem;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }

/* Responsive Design */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    text-align: center;
  }
  
  .header-logo-title {
    flex-direction: row; /* Keep logo and title side-by-side on mobile */
    justify-content: center;
  }

  .hero-title {
    font-size: 2rem;
  }
  
  .platforms-grid {
    grid-template-columns: 1fr;
    padding: 2rem 0;
  }
  
  /* Removed .nav-list styles for mobile */
  
  .container {
    padding: 0 15px;
  }
  
  .section {
    padding: 2rem 0;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .platform-box {
    padding: 1.5rem;
  }
  
  .coupons-grid {
    grid-template-columns: 1fr;
  }
}

/* Animation Classes */
.fade-in {
  animation: fadeIn 0.6s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}