/* Color Variables */
:root {
  --darkblue: #006699;
  --darkerblue: #1d3c6a;
  --lightblue: #01bbff;
  --white: #fff;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--darkblue);
  font-family: 'Roboto', sans-serif;
}

hr {
  margin: 2rem 0 0.8rem 0;
  border-color: var(--lightblue);
}

.container {
  padding: 0 2rem 1rem 2rem;
}

.main-header {
  font-size: 60px;
  margin-top: 0.5em;
  text-align: center;
  color: var(--lightblue);
}

.category-type {
  margin-top: 1rem;
  text-align: right;
  color: var(--lightblue);
}

#question {
  font-size: 20px;
  text-align: center;
  margin-bottom: 1em;
  color: var(--white);
}

/** BUTTONS **/
.buttons {
  display: flex;
  flex-direction: column;
}

#btn0,
#btn1,
#btn2,
#btn3 {
  font-size: 16px;
  padding: 0.8em;
  margin-top: 1em;
  border: 1px solid var(--darkerblue);
  border-radius: 10px;
  background-color: var(--lightblue);
  color: var(--white);
}

#btn0:focus,
#btn1:focus,
#btn2:focus,
#btn3:focus {
  outline: 0;
}

/** PROGRESS BAR **/
#progress {
  margin-bottom: 0.5rem;
  margin-left: 0.1rem;
  color: var(--white);
}

#progressBar {
  width: 15rem;
  height: 2rem;
  border-radius: 10px;
  border: 2px solid var(--lightblue);
}

#progressBarFill {
  height: 100%;
  background: var(--lightblue);
  border-radius: 8px;
  transition: width 0.5s;
}

/* RESULTS */
#score {
  font-size: 30px;
  text-align: center;
  margin-top: 1em;
  color: var(--white);
}

.try-again {
  display: flex;
  justify-content: center;
  margin-top: 2rem;
}
.try-again-btn {
  background-color: var(--lightblue);
  color: var(--white);
  text-align: center;
  border-radius: 5px;
  border: 1px solid #1d3c6a;
  padding: 0.5rem 1rem;
  text-decoration: none;
}

/** MEDIA QUERIES **/

/* Tablets */
@media only screen and (min-width: 768px) {
  #question {
    font-size: 30px;
  }
  .buttons {
    flex-direction: row;
    flex-wrap: wrap;
    width: 40rem;
    justify-content: center;
    align-items: stretch;
    margin: 0 auto;
  }
  #btn0,
  #btn1,
  #btn2,
  #btn3 {
    flex: 0 40%;
    min-height: 100%;
    font-size: 20px;
  }
  #btn0,
  #btn2 {
    margin-right: 1em;
  }
}

/* Desktops */
@media only screen and (min-width: 992px) {
  .container {
    width: 60rem;
    margin: 0 auto;
  }
}

/* Hover for Desktops */
@media (hover: hover) and (pointer: fine) {
  #btn0:hover,
  #btn1:hover,
  #btn2:hover,
  #btn3:hover,
  .try-again-btn:hover {
    cursor: pointer;
    box-shadow: 0 4px 15px black;
    transition: box-shadow 0.2s ease-in-out;
  }
}