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

*,
*::before,
*::after {
  box-sizing: border-box;
}

/* The trick to add a class called hide for each element we would hide it */
.hide {
  display: none;
}

/* styling the body with make its  color react to the answer */
:root {
  --hue-neutral: 220;
  --hue-wrong: 275;
  --hue-correct: 145;
}
body {
  --hue: var(--hue-neutral);
  background-color: hsl(var(--hue), 100%, 50%);
  width: 100vw;
  height: 100vh;
  padding: 0;
  margin: 0;
  font-family: 'Concert One', cursive !important;
  font-size: 1.5rem !important;
  background-image: url(body-ground.jpg);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  overflow: hidden;
}
body.correct {
  --hue: var(--hue-correct);
  transition: 0.3s ease-in-out;
}
body.wrong {
  --hue: var(--hue-wrong);
  transition: 0.3s ease-in-out;
}

/* styling the header show the title and make the color of title related to body color */
header {
  display: flex;
  flex-direction: row;
  margin-bottom: 10px;
}
/* styling the hint part to get help */
#hint-box {
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  width: 20%;
  height: 80px;
  padding: 10px;
  border-bottom: 2px solid rgba(255, 255, 255, 0.5);
}
#hint-box img {
  width: 70px;
  height: 50px;
  border-radius: 50%;
}
#hint-box img:hover {
  border: 2px solid white;
}
h1 {
  width: 50%;
  height: 80px;
  text-align: center;
  align-self: center;
  margin: 0 5%;
  padding: 10px 0;
  font-size: 45px;
  color: hsl(var(--hue), 100%, 20%);
  text-transform: uppercase;
  text-shadow: 1px 1px 20px white, 2px 2px 25px silver, 0px 0px 7px white;
  border-bottom: 2px solid rgba(255, 255, 255, 0.5);
}
#timing {
  width: 20%;
  height: 80px;
  padding: 10px;
  text-align: center;
  align-self: center;
  font-size: 50px;
  color: white;
  border-bottom: 2px solid rgba(255, 255, 255, 0.5);
}

/* styling the main part to show the quiz */
#user-interface {
  display: flex;
  flex-direction: row;
  justify-content: center;
  height: 60%;
  padding: 20px;
}

/* styling the intro image which disappeared with starting the game */
img {
  overflow: hidden;
  display: flex;
  align-self: center;
  height: 450px;
  margin-bottom: 10px;
  border-radius: 20px;
}
/* styling the box of showing the question text */
#question-area {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-content: stretch;
  align-items: stretch;
  text-align: center;
  width: 70%;
  height: 50%;
  font-size: 1.8rem;
  color: white;
}

/* styling the answers and the buttons */
.btn-grid {
  display: flex;
  flex-direction: column;
  margin-top: 15px;
  border-top: 2px solid rgba(255, 255, 255, 0.5);
  border-bottom: 2px solid rgba(255, 255, 255, 0.5);
}
.btn {
  border: none;
  outline: invert;
  cursor: pointer;
  background-color: rgba(255, 255, 255, 0);
  margin: 15px 0;
  padding: 20px;
  font-size: 1.5rem !important;
  font-weight: bold;
  letter-spacing: 2px;
  color: white;
}
.btn:hover {
  background-color: rgba(255, 255, 255, 0.2);
}
/* styling the button if the answer is correct */
.btn.correct {
  --hue: var(--hue-correct);
  background-color: hsl(var(--hue), 100%, 20%);
}

/* styling the button such as start, next , exit */
.controls {
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: 0 20px;
}
.start-btn,
.next-btn,
.add-btn,
.delete-btn,
.exit-btn {
  text-align: center;
  width: 130px;
  height: 130px;
  padding: 5px;
  font-size: 2.4rem !important;
  font-weight: bold;
  font-family: 'Concert One', cursive !important;
  border: 1px solid silver;
  border-radius: 50%;
}

/* styling the colorful counter of current questions and total number of correct answer */
#process-answered-questions,
#process-correct-answers {
  overflow: hidden;
  position: relative;
  width: 20%;
  max-width: 15%;
  font-family: 'Concert One', cursive !important;
  text-align: center;
  border: 4px solid hsl(var(--hue), 100%, 30%);
  border-radius: 20px;
  background-color: rgba(255, 255, 255, 0);
}
#process-correct-answers-move {
  position: absolute;
  bottom: 0;
  width: 100%;
  font-size: 2rem !important;
  background-image: linear-gradient(
    to bottom,
    rgb(6, 180, 59),
    rgb(90, 180, 117),
    rgb(153, 179, 161)
  );
  transition: 0.3s ease-in-out;
}
#process-answered-questions-move {
  position: absolute;
  bottom: 0;
  width: 100%;
  background: rgba(4, 112, 47, 0.5);
  transition: 0.3s ease-in-out;
}
#question-number,
#question-correct {
  margin: 0 !important;
}
#number-question {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  color: hsl(var(--hue), 100%, 30%);
}