*, *::before, *::after {
  box-sizing: border-box;
  font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
}

:root {
  --hue-neutral: 200;
  --hue-wrong: 0;
  --hue-correct: 145;
}

body {
  --hue: var(--hue-neutral);
  padding: 0;
  margin: 0;
  background-color: hsl(var(--hue), 100%, 20%);
}

body.correct {
  --hue: var(--hue-correct);
}

body.wrong {
  --hue: var(--hue-wrong);
}

.header {
  display: flex;
  height: 25vh;
  color: white;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin: 25px
}

.header > h1 {
  text-align: center;
  margin: 0;
}

.quiz {
  display: flex;
  width: 100vw;
  height: 75vh;
  justify-content: center;
  align-items: center;
}

.container {
  width: 400px;
  background-color: rgb(26, 26, 26);
  margin: 0 15px;
  color: white;
  border-radius: 5px;
  padding: 15px;
}

.btn-grid {
  display: grid;
  grid-template-rows: 1fr;
  gap: 15px;
  margin: 20px 0;
}

.btn {
  --hue: var(--hue-neutral);
  border: none;
  background-color: hsl(var(--hue), 100%, 25%);
  border-radius: 5px;
  padding: 10px;
  color: white;
  outline: none;
}

.btn:hover {
  border-color: black;
}

.btn.correct {
  --hue: var(--hue-correct);
  color: black;
}

.btn.wrong {
  --hue: var(--hue-wrong);
}

.start-btn, .next-btn {
  font-size: 1.5rem;
  font-weight: bold;
  padding: 10px 20px;
}

.controls {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hide {
  display: none;
}