:root {
  --text-color: rgb(205, 205, 255);
  --text-muted-color: rgb(183, 183, 183);
  --heading-color:#0ad70a;
  --link-color: #4646ff;
  --link-active-color: #6e6eff;

  --background-color: rgb(25, 25, 35); 
  --background-color-secondary: rgb(55, 55, 70);
  --background-color-content: rgba(25, 25, 35, .5); 
  --border-color: #cccccc;
  --border-radius: 0.2rem;
}

html * {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Roboto, sans-serif;
  font-size: 16px;
  height: 100%;
}

body {
  background-color: var(--background-color);
  color: var(--text-color);
}


nav {
  font-size: 2rem;
  background-color: var(--background-color-secondary);
  padding: 2rem;
  margin-bottom: 2rem;
}

nav a {
  font-size: 1.2rem;
  padding: 0.5rem 1rem;
  color: white;
  transition: color 0.3s ease, background-color 0.3s ease;
}

nav a:hover {
  color: var(--link-hover-color);
  background-color: var(--background-secondary-color);
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 100px;
}

article {
  width: 80%;
  max-width: 800px;
  background-color: var(--background-color-secondary);
  padding: 1.5rem 5rem;
  margin: auto;
  border-radius: var(--border-radius);
}

section {
  padding: 1.5rem;
  margin-bottom: 3rem;
  background-color: var(--background-color-content);
  border-radius: var(--border-radius);
}

footer {
  color: var(--text-muted-color);
  text-align: center;
  padding: 1rem;
  width: 100%;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--heading-color);
  margin-bottom: 1rem;
}

h1 {
  font-size: 3rem;
}

h2 {
  font-size: 2rem;
}

ul {
  list-style-type: none;
}

a {
  color: var(--link-color);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

a:active {
  color: var(--link-active-color);
}

ul.col2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  padding: 0;
  margin: 0;
}

img.logo {
  width: 15rem;
  height: auto;
  border-radius: var(--border-radius);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.hero {
  display: flex;
  color: white;
  background-color: transparent;
  align-items: center;
  text-align: center;
  gap: 2rem;
  padding: 0;

}

.hide {
  display: none;
}

@media (max-width: 850px) {
  nav {
    font-size: 1.5rem;
    padding: 1rem;
  }

  article {
    width: 90%;
    padding: 2rem;
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 1.8rem;
  }

  .hero {
    flex-direction: column;
    text-align: center;
  }
}