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


body {
  font-family: 1;
  background: linear-gradient(to bottom, #000000, #000000);
  color: #f0f0f0;
  line-height: 1.5;
  padding-top: 140px; 
}


header {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  padding: 20px;
  text-align: center;
  border-bottom: 2px solid rgba(0, 0, 0, 0.8);
  z-index: 1000;
}

header h1 {
  font-size: 28px;
  color: #521bf8;
  text-shadow: 0 0 5px #521bf8 (0, 242, 255, 0.6);
}

header p {
  font-size: 14px;
  color: #ccc;
  margin-top: 8px;
}


nav {
  background-color: rgba(0, 0, 0, 0.95);
  padding: 10px 0;
  position: fixed;
  top: 80px;
  width: 100%;
  z-index: 999;
  border-bottom: 1px solid rgba(51, 51, 51, 0.8);
  box-shadow: 0 2px 6px rgb(75, 22, 200);
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 25px;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 6px;
  transition: background-color 0.5s ease, color 0.5s ease;
}

nav ul li a:hover,
nav ul li a:focus {
  background-color: rgba(65, 37, 221, 0.8);
  color: #fbf9f9;
  outline: none;
  box-shadow: 0 0 8px rgba(60, 21, 179, 0.8);
}


section {
  max-width: 800px;
  margin: 120px auto 60px;
  padding: 20px;
  background-color: rgba(34, 33, 33, 0.85);
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: transform 0.5s ease;
}

section:hover {
  transform: translateY(-5px); 
}

section h2 {
  font-size: 26px;
  margin-bottom: 15px;
  color: #521bf8;
  text-shadow: 0 0 6px rgba(57, 14, 212, 0.7);
}

section h3,
section h4 {
  margin-top: 15px;
  font-weight: normal;
  color: #ddd;
}


img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  margin-top: 10px;
  transition: transform 0.5s ease, box-shadow 0.5s ease;
}

img:hover,
img:focus {
  transform: scale(1.05); 
  box-shadow: 0 6px 20px rgba(53, 20, 203, 0.8);
  outline: none;
}


iframe {
  width: 100%;
  max-width: 560px;
  height: 315px;
  border-radius: 10px;
  margin-top: 10px;
  display: block;
  transition: box-shadow 0.5s ease;
}

iframe:hover,
iframe:focus {
  box-shadow: 0 6px 20px rgb(55, 13, 117);
  outline: none;
}


ul {
  margin-top: 10px;
  list-style: none;
  padding-left: 0;
}

ul li {
  margin: 8px 0;
}

ul li a {
  color: #521bf8;
  font-weight: 600;
  text-decoration: none;
  transition: color 0.5s ease;
}

ul li a:hover,
ul li a:focus {
  color: #521bf8;
  text-decoration: underline;
  outline: none;
}

@media (max-width: 600px) {
  nav ul {
    flex-direction: column;
    gap: 12px;
  }

  header h1 {
    font-size: 22px;
  }

  section h2 {
    font-size: 22px;
  }

  iframe {
    height: 200px;
  }
}