:root {
  --clr-text-default: #cbd5e1;
  --clr-text-light: #64748b;

  --hue: 240;

  --clr-background: hsl(var(--hue), 33%, 17%);
  --clr-background-light: hsl(var(--hue), 44%, 10%);
  --clr-background-light-2: hsl(var(--hue), 20%, 20%);
  --clr-background-dark: hsl(var(--hue), 81%, 8%);
}

/* poppins-bold */
@font-face {
  font-family: Poppins;
  font-style: normal;
  font-weight: 700;
  font-stretch: 100%;
  src: local('Poppins Bold'), local('Poppins-Bold'),
    url(fonts/poppins-bold.woff2) format('woff2');
}
/* poppins-medium */
@font-face {
  font-family: Poppins;
  font-style: normal;
  font-weight: 500;
  font-stretch: 100%;
  src: local('Poppins Medium'), local('Poppins-Medium'),
    url(fonts/poppins-medium.woff2) format('woff2');
}

/* jetbrains-mono */
@font-face {
  font-family: JetBrains;
  font-style: normal;
  font-weight: 100 800;
  font-stretch: 100%;
  src: local('JetBrains Mono Regular'), local('JetBrainsMono-Regular'),
    url(fonts/jetbrains-mono.woff2) format('woff2');
}

/* jetbrains-mono-italic */
@font-face {
  font-family: JetBrains;
  font-style: italic;
  font-weight: 100 800;
  font-stretch: 100%;
  src: local('JetBrains Mono Italic'), local('JetBrainsMono-Italic'),
    url(fonts/jetbrains-mono-italic.woff2) format('woff2');
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: Poppins, sans-serif;

  font-size: 18px; /* See what value works for best diffrent screen resolutions */
}

html {
  height: 100vh;
}

body {
  color: var(--clr-text-default);
  background-color: var(--clr-background);
  height: 100%;
}

button {
  border: none;
  cursor: pointer;
  line-height: 1;
  font-size: 1.2rem;
}

svg {
  height: 1.3rem;
  width: 1.3rem;
}

.divider {
  color: var(--clr-text-light);
}

.container {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr 30fr;
  gap: 1.5rem;

  padding: 1.5rem;

  height: 100%;
}

.main-container {
  grid-row: 2 / 3;
  grid-column: 1 / -1;

  overflow: hidden;

  display: flex;
  flex-direction: row;
  align-items: stretch;
  gap: 1.5rem;
}

.exercises-container {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  overflow-y: auto;
  width: 15rem;
}

.exercises-container button {
  width: 10rem;
  cursor: pointer;
  background-color: var(--clr-background-light-2);
}

.exercises-container button.selected {
  background-color: var(--clr-background-light);
}

.btn {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5em;

  color: var(--clr-text-default);
  background-color: var(--clr-background-light);

  padding: 1rem;
  border-radius: 0.75em;
}

.btn:hover {
  opacity: 0.7;
}

.navbar {
  grid-row: 1 / 2;
  grid-column: 1 / -1;

  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 2rem;
  font-weight: bold;
}

.actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1em;
}

#slider {
  width: 10rem;
  accent-color: black;
}

#terminal {
  font-family: JetBrains, sans-serif;
  font-size: 1.3rem;

  background-color: var(--clr-background-dark);

  padding: 1rem;

  width: 100%;
  border-radius: 0.75rem;

  overflow-x: auto;
  overflow-y: auto;
}

#terminal::-webkit-scrollbar,
.exercises-container::-webkit-scrollbar {
  width: 0.6vw;
  height: 0.6vw;
}

#terminal::-webkit-scrollbar-thumb,
.exercises-container::-webkit-scrollbar-thumb {
  background-color: var(--clr-background-light-2);
  border-radius: 99px;
}