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

/* Hamburger Menu Reference: 
  https://alvarotrigo.com/blog/hamburger-menu-css/ 
*/

h1 {
  margin-top: 0.5rem;
  width: 210px;
}

.menu a {
  font-family: "Concert One", sans-serif;
  color: white;
}

.menu a:hover {
  transition: .5s;
  color: yellow;
}

.menu li {
  font-size: 1.8em;
}

html,
body {
  margin: 0;
  height: 100%;
}

* {
  font-family: "Arial", "meiryo", "メイリオ";
  box-sizing: border-box;
}

.top-nav {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  background-color: #00BAF0;
  background: #FF8800;
  /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
  color: #FFF;
  height: 50px;
  width: 100%;
  padding: 2.5em;
  position: fixed;
  z-index: 1000;
}

.menu {
  display: flex;
  flex-direction: row;
  list-style-type: none;
  margin: 0;
  padding: 0;
}

.menu>li {
  margin: 0 1rem;
  overflow: hidden;
}

.menu-button-container {
  display: none;
  height: 100%;
  width: 30px;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

#menu-toggle {
  display: none;
}

.menu-button,
.menu-button::before,
.menu-button::after {
  display: block;
  background-color: #fff;
  position: absolute;
  height: 4px;
  width: 30px;
  transition: transform 400ms cubic-bezier(0.23, 1, 0.32, 1);
  border-radius: 2px;
}

.menu-button::before {
  content: '';
  margin-top: -8px;
}

.menu-button::after {
  content: '';
  margin-top: 8px;
}

#menu-toggle:checked+.menu-button-container .menu-button::before {
  margin-top: 0px;
  transform: rotate(405deg);
}

#menu-toggle:checked+.menu-button-container .menu-button {
  background: rgba(255, 255, 255, 0);
}

#menu-toggle:checked+.menu-button-container .menu-button::after {
  margin-top: 0px;
  transform: rotate(-405deg);
}

@media (max-width: 1130px) {
  h1 {
    margin-top: 0.8rem;
    width: 180px;
  }

  .top-nav {
    position: sticky;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    background-color: #00BAF0;
    background: #FF8800;
    /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
    color: #FFF;
    height: 65px;
    width: 100%;
    padding: 1.5em;
    position: fixed;
    z-index: 1000;
  }

  .menu-button-container {
    display: flex;
  }

  .menu {
    position: absolute;
    top: 0;
    margin-top: 65px;
    left: 0;
    flex-direction: column;
    width: 100%;
    justify-content: center;
    align-items: center;
  }

  #menu-toggle~.menu li {
    height: 0;
    margin: 0;
    padding: 0;
    border: 0;
    transition: height 400ms cubic-bezier(0.23, 1, 0.32, 1);
  }

  #menu-toggle:checked~.menu li {
    border: 1px solid #FF8800;
    height: 2.5em;
    padding: 0.5em;
    transition: height 400ms cubic-bezier(0.23, 1, 0.32, 1);
  }

  .menu>li {
    display: flex;
    justify-content: center;
    margin: 0;
    padding: 0.5em 0;
    width: 100%;
    color: white;
    background-color: #FF8800;
  }

  .menu>li:not(:last-child) {
    border-bottom: 1px solid #444;
  }
}