:root {
  --green: rgb(102, 148, 88);
  --light-green: rgb(152, 185, 142);

  --dark-grey: rgb(35, 46, 35);
  --dark-grey: rgba(6, 26, 0, 0.95);

  --white: rgb(250, 255, 250);

  --white-trans: 90deg, rgb(230, 235, 230) 20%, rgb(250, 255, 250) 100%;
  --white-trans: 90deg, rgba(230, 235, 230, 0.95) 20%, rgba(250, 255, 250, 0.95) 100%;

  --transition-speed: 500ms;
}

.navbar {
  z-index: 1;
  font-family: 'Cinzel';
  position: fixed;
  background-color: var(--dark-grey);
  transition: width 100ms ease;
}

.navbar-nav {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
}
.nav-item {
  width: 100%;
}
.nav-item:last-child {
  margin-top: auto;
}

.nav-link {
  display: flex;
  align-items: center;
  height: 5rem;
  color: var(--white);
  text-decoration: none;
  filter: grayscale(100%) opacity(0.7);
  transition: var(--transition-speed);
}
.nav-link:hover {
  filter: grayscale(0%) opacity(1);
  background: linear-gradient(var(--white-trans));
  color: var(--green);
  fill: var(--green);
}
.nav-link:hover svg {
  fill: var(--green);
}
.nav-link svg {
  min-width: 2rem;
  margin: 0 1.5rem;
  height: 30px;
  width: 30px;
  fill: var(--white);
  transition: var(--transition-speed);
}


.logo {
  font-weight: bold;
  text-transform: uppercase;
  margin-bottom: 1rem;
  text-align: center;
  display: flex;
  align-items: center;
  height: 5rem;
  color: var(--green);
  background: linear-gradient(var(--white-trans));
  letter-spacing: 0.3ch;
  text-decoration: none;
  filter: grayscale(100%) opacity(0.7);
  transition: var(--transition-speed);
}
.logo svg {
  transform: rotate(0deg);
  min-width: 2rem;
  margin: 0 1.5rem;
  height: 30px;
  width: 30px;
  fill: var(--green);
  transition: var(--transition-speed);
}
.navbar:hover .logo svg {
  transform: rotate(-360deg);
  filter: grayscale(0%) opacity(1);
}
.navbar:hover .logo {
  filter: grayscale(0%) opacity(1);
}

.link-text {
  display: none;
  margin-left: 1rem;
  font-size: 1.25rem;
}


.container {
  margin-left: 5rem;
  padding: 1rem;
}


/* small screen */
@media only screen and (max-width: 600px) {
  .navbar {
    top: 0;
    width: 100vw;
    height: 3rem;
    overflow-x: scroll;
    -ms-overflow-style: none;
    scrollbar-width: none;
    border-bottom: solid 2px var(--light-green);
    box-shadow: 0 5px 5px var(--black), 
      0 15px 15px var(--black);
  }
  .navbar::-webkit-scrollbar {
    display: none;
  }

  .navbar-nav {
    flex-direction: row;
  }

  .nav-link {
    height: 3rem;
    justify-content: center;
  }
  .nav-link svg {
    height: 20px;
    width: 20px;
  }

  .logo {
    height: 3rem;
    justify-content: center;
    margin-bottom: 0;
  }
  .logo svg {
    height: 20px;
    width: 20px;
  }

  .container {
  margin-left: 0;
  margin-top: 3rem;
  }

}

/* large screen */
@media only screen and (min-width: 600px) {
  .navbar {
    top: 0;
    width: 5rem;
    height: 100vh;
    border-right: solid 2px var(--light-green);
    box-shadow: 5px 0 5px var(--black), 
      15px 0 15px var(--black);
  }

  .navbar:hover {
    width: 16rem;
  }

  .navbar:hover .link-text {
    display: inline;
    opacity: 1;
    transition: opacity var(--transition-speed);
  }
}