body {
  margin: 0;
  font-family: sans-serif;
  background: radial-gradient(circle, #111 40%, #000);
  color: #fff;
  text-align: left;
}

nav {
  position: fixed;
  top: 15px;
  left: 15px;
  z-index: 1000;
}

#menu-toggle {
  display: none;
}

.hamburger {
  display: grid;
  row-gap: 6px;
  cursor: pointer;
  padding: 8px;
  transition: 0.3s ease;
}

.hamburger span {
  display: block;
  width: 28px;
  height: 4px;
  background: #fff;
}

.hamburger:hover {
  background: lightblue;
}

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none;
}

#menu-toggle:checked ~ .overlay {
  display: block;
}

.sidebar {
  position: fixed;
  top: 0;
  left: -220px;
  width: 180px;
  height: 100%;
  background: #111;
  list-style: none;
  padding-top: 70px;
  margin: 0;
  transition: left 0.3s ease;
}

.sidebar li {
  padding: 12px 16px;
}

.sidebar a {
  color: #fff;
  text-decoration: none;
  font-size: 1rem;
  display: block;
  transition: color 0.3s ease;
}

.sidebar a:hover {
  color: yellow;
}

#menu-toggle:checked ~ .sidebar {
  left: 0;
}

header img {
  display: block;
  margin: 0 auto;
  width: 100%;
  max-width: 450px;
  padding: 1rem;
}

header p {
  margin: 1rem 0 1.5rem 1.2rem;
  font-size: 1.3rem;
  color: #fff;
}

section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  padding: 1rem 0 1.5rem 1.2rem;
}

figure {
  margin: 0;
  display: grid;
  grid-template-columns: auto;
  row-gap: 1.5rem;
  align-items: center;
}

img {
  display: block;
  width: 100%;
  max-width: 220px;
  transition: transform 0.3s ease, filter 0.3s ease;
}

figure:nth-of-type(1) img:hover {
  filter: drop-shadow(0 0 12px blue) drop-shadow(0 0 20px red);
}

figure:nth-of-type(2) img:hover {
  filter: drop-shadow(0 0 12px red) drop-shadow(0 0 20px gold);
}

figure:nth-of-type(3) img:hover {
  filter: drop-shadow(0 0 12px purple) drop-shadow(0 0 20px silver);
}

img:active {
  transform: scale(0.9);
}

aside {
  transform: scale(0);
  transition: transform 0.4s ease;
}

.gif {
  width: 100%;
  max-width: 260px;
  filter: drop-shadow(0 0 10px #fff);
}

aside.active {
  transform: scale(1);
}

@keyframes spin {
  from {
    transform: rotate(0deg) scale(1);
  }
  to {
    transform: rotate(360deg) scale(1);
  }
}

@keyframes spin-reverse {
  from {
    transform: rotate(0deg) scale(1);
  }
  to {
    transform: rotate(-360deg) scale(1);
  }
}

img.spinning {
  animation: spin 0.4s linear infinite;
  transform-origin: center;
}

figure:nth-of-type(3) img.spinning {
  animation: spin-reverse 0.4s linear infinite;
}

@media (min-width: 768px) {
  header img {
    max-width: 650px;
  }

  header p {
    font-size: 1.8rem;
    margin-left: 2rem;
  }

  section {
    gap: 6rem;
    padding-left: 2rem;
  }

  figure {
    grid-template-columns: auto auto;
    column-gap: 3rem;
  }

  img {
    max-width: 260px;
  }

  .gif {
    max-width: 500px;
  }

  .sidebar {
    width: 200px;
  }
}