/* Main Styles */
.main {
  background: #f8fafc;
  min-height: 100vh;
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: 6rem 2rem;
  background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
  color: white;
  overflow: hidden;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: 4.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
  font-size: 1.5rem;
  opacity: 0.9;
  margin-bottom: 2rem;
  max-width: 600px;
}

.hero-search {
  display: flex;
  gap: 1rem;
  max-width: 500px;
}

.search-input {
  flex: 1;
  padding: 1rem 1.5rem;
  border: none;
  border-radius: 12px;
  font-size: 1.1rem;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.search-input::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

.search-input:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.15);
}

.search-btn {
  padding: 1rem;
  border: none;
  border-radius: 12px;
  background: white;
  color: #1e40af;
  cursor: pointer;
  transition: all 0.3s ease;
}

.search-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Hero Shapes */
.hero-shapes {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
}

.shape {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  animation: float 8s infinite ease-in-out;
}

.shape-1 {
  width: 300px;
  height: 300px;
  top: -100px;
  right: -100px;
  animation-delay: 0s;
}

.shape-2 {
  width: 200px;
  height: 200px;
  bottom: -50px;
  left: -50px;
  animation-delay: 2s;
}

.shape-3 {
  width: 150px;
  height: 150px;
  top: 50%;
  right: 10%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(20px, 20px); }
}

/* Categories Section */
.categories-section {
  padding: 2rem;
  background: white;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 100;
}

.category-filters {
  display: flex;
  gap: 1rem;
  max-width: 1200px;
  margin: 0 auto;
  overflow-x: auto;
  padding: 0.5rem;
  scrollbar-width: none;
}

.category-filters::-webkit-scrollbar {
  display: none;
}

.filter-btn {
  padding: 0.8rem 1.5rem;
  border: none;
  border-radius: 30px;
  background: #f1f5f9;
  color: #64748b;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.filter-btn:hover {
  background: #e2e8f0;
  color: #1e293b;
}

.filter-btn.active {
  background: #3b82f6;
  color: white;
}

/* Tech Container */
.tech-container {
  padding: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2.5rem;
}

/* Tech Cards */
.tech-card {
  background: white;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.tech-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 20px rgba(0, 0, 0, 0.1);
}

.card-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.5rem 1rem;
  background: rgba(59, 130, 246, 0.9);
  color: white;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  backdrop-filter: blur(4px);
  z-index: 1;
}

.card-image {
  position: relative;
  height: 240px;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.tech-card:hover .card-image img {
  transform: scale(1.1);
}

.card-content {
  padding: 0.6rem 2rem;
}

.card-content h3 {
  font-size: 1.5rem;
  color: #1e293b;
  margin-bottom: 1rem;
  font-weight: 600;
  line-height: 1.4;
}

.description {
  color: #64748b;
  line-height: 1.7;
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

.card-footer {
  display: flex;
  justify-content: flex-end;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  background: #f1f5f9;
  color: #3b82f6;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

.action-btn:hover {
  background: #3b82f6;
  color: white;
  transform: translateY(-2px);
}

.action-btn i {
  font-size: 1.2rem;
}

/* Scroll Top Button */
.scroll-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  border: none;
  border-radius: 50%;
  background: #3b82f6;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-top-btn.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top-btn:hover {
  background: #2563eb;
  transform: translateY(-3px);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-section {
    padding: 4rem 1rem;
  }

  .hero-title {
    font-size: 3rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }

  .search-input {
    padding: 0.8rem 1rem;
    font-size: 1rem;
  }

  .search-btn {
    padding: 0.8rem;
  }

  .categories-section {
    padding: 1rem;
  }

  .filter-btn {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }

  .tech-container {
    padding: 2rem 1rem;
  }

  .tech-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .card-image {
    height: 200px;
  }

  .card-content {
    padding: 1.5rem;
  }

  .card-content h3 {
    font-size: 1.3rem;
  }

  .action-btn {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }
}