.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  display: flex;
  align-items: center;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(14, 165, 233, 0.15) 0%, transparent 50%);
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  color: #fff;
}

.hero-content .tag {
  display: inline-block;
  background: rgba(6, 182, 212, 0.2);
  color: var(--primary-light);
  padding: 8px 20px;
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 25px;
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 25px;
}

.hero-content h1 span {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 35px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  margin-bottom: 50px;
}

.hero-buttons .btn-outline {
  border-color: rgba(6, 182, 212, 0.5);
  color: var(--primary-light);
}

.hero-buttons .btn-outline:hover {
  background: var(--primary-color);
  color: #fff;
}

.hero-stats {
  display: flex;
  gap: 40px;
}

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

.hero-stat h3 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 5px;
}

.hero-stat p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

.hero-image {
  position: relative;
}

.hero-image img {
  border-radius: var(--radius);
  box-shadow: 0 30px 60px -15px rgba(6, 182, 212, 0.3);
}

.hero-image::before {
  content: '';
  position: absolute;
  top: -15px;
  right: -15px;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius);
  z-index: -1;
  opacity: 0.3;
}

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

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.feature-card {
  text-align: center;
  padding: 40px 30px;
  background: #fff;
  border-radius: var(--radius);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.feature-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 25px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon i {
  font-size: 1.8rem;
  color: #fff;
}

.feature-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.feature-card p {
  color: var(--text-light);
  font-size: 0.95rem;
}

.courses {
  background: var(--bg-white);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.course-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.course-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.course-image {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-dark), #1e293b);
  display: flex;
  align-items: center;
  justify-content: center;
}

.course-image i {
  font-size: 4rem;
  color: var(--primary-color);
  opacity: 0.8;
}

.course-badge {
  position: absolute;
  top: 15px;
  left: 15px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
}

.course-content {
  padding: 30px;
}

.course-content h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.course-content p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.course-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.course-meta span {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.course-meta span i {
  margin-right: 6px;
  color: var(--primary-color);
}

.course-price {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary-color);
}

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

.teachers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.teacher-card {
  text-align: center;
  background: #fff;
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.teacher-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.teacher-avatar {
  width: 110px;
  height: 110px;
  margin: 0 auto 20px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--primary-color);
  transition: var(--transition);
}

.teacher-card:hover .teacher-avatar {
  border-color: var(--primary-light);
}

.teacher-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.teacher-card h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.teacher-card .title {
  color: var(--primary-color);
  font-size: 0.9rem;
  margin-bottom: 12px;
  font-weight: 600;
}

.teacher-card p {
  color: var(--text-light);
  font-size: 0.9rem;
}

.cases {
  background: var(--bg-white);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.case-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 35px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.case-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.case-header {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 20px;
}

.case-avatar {
  width: 65px;
  height: 65px;
  border-radius: 50%;
  overflow: hidden;
}

.case-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-info h4 {
  font-size: 1.1rem;
  margin-bottom: 5px;
  color: var(--text-dark);
}

.case-info span {
  font-size: 0.85rem;
  color: var(--primary-color);
  font-weight: 600;
}

.case-card p {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.case-result {
  display: flex;
  gap: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.case-result span {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.case-result span strong {
  color: var(--primary-color);
}

.cta {
  background: linear-gradient(135deg, var(--bg-dark), #1e293b);
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 30% 50%, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(14, 165, 233, 0.1) 0%, transparent 50%);
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.cta-content p {
  font-size: 1.15rem;
  margin-bottom: 35px;
  color: var(--text-muted);
}

@media (max-width: 992px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content h1 {
    font-size: 2.8rem;
  }

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

  .hero-image {
    display: none;
  }

  .hero-stats {
    justify-content: center;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .courses-grid,
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .teachers-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2.2rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
  }

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

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

  .cta-content h2 {
    font-size: 2rem;
  }
}