:root {
  --primary-color: #007bff;
  --secondary-color: #6c757d;
  --bg-dark: #121212;
  --text-color: #ffffff;
  --font-family: 'Nunito Sans', sans-serif;
}

/* General Styles */
body {
  font-family: var(--font-family);
  color: var(--text-color);
  background-color: var(--bg-dark);
  margin: 0;
  padding: 0;
  overflow: hidden;
  height: 100vh;
}

.main-container {
  position: relative;
  width: 100vw;
  height: 100vh;
  perspective: 1000px;
}

.section {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  background-color: var(--bg-dark);
  transition: transform 1s ease;
}

.hero {
  transform: rotateX(0deg);
}

.portfolio {
  transform: rotateX(-90deg);
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
}

.hero p {
  font-size: 1.25rem;
  font-weight: 300;
  margin-bottom: 40px;
}

.scroll-indicator {
  margin-bottom: 40px;
  text-align: center;
}

.scroll-indicator i {
  font-size: 24px;
  animation: bounce 1.5s infinite;
}

.scroll-indicator p {
  margin: 5px 0 0;
  font-size: 14px;
}

@keyframes bounce {
  0%, 100% {
      transform: translateY(0);
  }
  40% {
      transform: translateY(-10px);
  }
  60% {
      transform: translateY(-5px);
  }
}

.social-icons {
  margin-top: 40px;
}

.social-icons a {
  font-size: 1.5rem;
  transition: color 0.3s ease;
}

.social-icons a:hover {
  color: var(--primary-color);
}

.portfolio h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.portfolio .portfolio-img {
  height: 250px;
  object-fit: cover;
}

.portfolio .card {
  border: none;
  margin-bottom: 20px;
  transition: transform 0.3s ease-in-out;
}

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

.footer {
  border-top: 1px solid #343a40;
}

.footer a {
  font-size: 1.5rem;
  transition: color 0.3s ease;
}

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

@media (max-width: 768px) {
  .hero h1 {
      font-size: 2.5rem;
  }

  .hero p {
      font-size: 1rem;
  }

  .portfolio h2 {
      font-size: 2rem;
  }

  .portfolio .portfolio-img {
      height: 200px;
  }

  .portfolio .card-title {
      font-size: 1.25rem;
  }

  .scroll-indicator i {
      font-size: 20px;
  }

  .scroll-indicator p {
      font-size: 12px;
  }

  .social-icons a {
      font-size: 1.25rem;
  }
}