* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      scroll-behavior: smooth;
    }

    body {
      font-family: 'Inter', sans-serif;
      background-color: #0e101c;
      color: #f0f0f0;
      line-height: 1.6;
      
      background-repeat: repeat;
    }
    

    header.hero {
      height: 100vh;
      background: url('remove_watermark_image_20250520_150815.png') center center / cover no-repeat;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      text-align: center;
      padding: 2rem;
    }

    header.hero h1 {
      font-size: 5rem;
      color: #ffd479;
      padding-top: 0;
      text-shadow: 1px 1px 1px rgba(0, 0, 0, 1);
    }
    
    
    
    header.hero p {
      font-size: 1.8rem;
      color: #feb821;
      max-width: 800px;
      text-shadow: 1px 1px 1px rgba(0, 0, 0, 1);
    }

    

    nav {
      background: #161a2b;
      padding: 1rem;
      text-align: center;
      position: sticky;
      top: 0;
      z-index: 10;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    }

    nav a {
      color: #feb821;
      margin: 0 1rem;
      text-decoration: none;
      font-weight: bold;
    }

    main {
      max-width: 1200px;
      margin: auto;
      padding: 2rem 1rem;
    }

    section {
      margin-bottom: 3rem;
      padding: 2rem;
      background: rgba(28, 31, 48, 0.95);
      border-radius: 16px;
      box-shadow: 0 2px 12px rgba(0,0,0,0.4);
      scroll-margin-top: 5rem;
    }

    section h2, section h3 {
      color: #ffd479;
      margin-bottom: 1rem;
    }

    .gallery-img {
      background: #1c1f30;
      border-radius: 8px;
      padding: 1rem;
      margin-bottom: 1rem;
    }

    .reference {
      margin-bottom: 1.5rem;
    }

    iframe {
      width: 100%;
      border-radius: 12px;
    }

    footer {
      text-align: center;
      padding: 1rem;
      background: #161a2b;
      color: #777;
      margin-top: 4rem;
    }

    .course {
      margin-bottom: 2rem;
    }

    .pulse-button {
      padding: 0.75rem 1.5rem;
      background-color: #ffd479;
      color: #1c1f30;
      border: none;
      border-radius: 8px;
      font-size: 1rem;
      cursor: pointer;
      transition: transform 0.2s ease;
    }

    .pulse-button:hover {
      transform: scale(1.05);
      background-color: #ffd479;
    }

     .scroll-arrow {
    position: absolute;
    bottom: 20px;
    font-size: 4rem;
    color:#feb821 ;
    cursor: pointer;
    user-select: none;
  }

  .gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.gallery-item {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: 12px;
  transition: transform 0.2s ease;
}

.gallery-item:hover {
  transform: scale(1.05);
}

.lightbox {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.lightbox img {
  max-width: 85vw;
  max-height: 85vh;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
  display: block;
  margin: auto;
}

.lightbox:target {
  display: flex;
}

.lightbox-close {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  display: block;
  z-index: -1;
}


.gallery-img {
  background: #1c1f30;
  border-radius: 12px;
  padding: 1rem;
  text-align: center;
  color: #ffd479;
}

.gallery-img figcaption {
  color: #ffd479;
}



  @media (max-width: 768px) {
  header.hero h1 {
    font-size: 2rem;
  }

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

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

  .gallery-item {
    height: auto;
  }
}