@import url('https://fonts.googleapis.com/css2?family=Kulim+Park&display=swap');

.kulim-park-regular {
  font-family: 'Kulim Park', sans-serif;
  font-weight: 400;
  font-style: normal;
}

body {
  background: #001e3d;
  margin: 5%;
  font-family: 'Kulim Park', sans-serif;
  color: #cccccc;
  font-size: 20px;
}

h1 {
  color: #4fa62f;
  text-shadow:
    -1px 0px 0px #ffffff,
    -2px 0px 0px #ffcc66;
  font-size: 60px;
  font-weight: 500;
  text-align: center;
}

hr {
  margin: 20px 0;
  border: none;
  border-top: 2px solid #003162;
}

/* Library */

.library {
  list-style: none;
  padding: 0;
  flex-direction: column;
}

.category {
  margin: 10px 0;
}

/* Toggle button */
.toggle {
  width: 200px;
  background-color: #ffcc66;
  border-radius: 10px;
  box-shadow: 0px 5px 0px #b07600;
  padding: 10px 20px;
  margin: 10px 5px;
  display: inline-block;
  border: none;
  font-weight: 700;
  font-family: inherit;
  text-align: start;
  font-size: medium;
}

.toggle :hover {
  transform: translateY(2px);
  box-shadow: 0px 3px 0px #b07600;
}

.toggle :active {
  transform: translateY(4px);
  box-shadow: 0px 1px 0px #b07600;
}

button {
  background-color: #ffcc66;
  border-radius: 10px;
  box-shadow: 0px 5px 0px #b07600;
  padding: 10px 20px;
  margin: 10px 5px;
  display: inline-block;
  width: 150px;
  border: none;
  font-weight: 700;
  font-family: inherit;
}

button:hover {
  transform: translateY(2px);
  box-shadow: 0px 3px 0px #b07600;
}

button:active {
  transform: translateY(4px);
  box-shadow: 0px 1px 0px #b07600;
}

/* Arrow */

.toggle::before {
  content: '▶';
  display: inline-block;
  margin-right: 10px;
  font-size: 16px;
  transition: transform 0.2s;
}

/* Rotate arrow when open */

.category.open .toggle::before {
  transform: rotate(90deg);
}

/* Hidden items */

.items {
  display: none;
  margin-top: 5px;
}

/* Show items */

.category.open .items {
  display: block;
}

a {
  color: #ffffff;
  text-decoration: none;
}

a:hover {
  color: #4fa62f;
}

li {
  margin-top: 10px;
}

@media (max-width: 500px) {
  body {
    font-size: 16px;
  }
  .toggle {
    font-size: medium;
    text-align: start;
  }

  h1 {
    font-size: 40px;
  }
}