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

:root {
  font-size: clamp(40%, 1% + 2vh, 62.5%);
}

html, button, input {
  font-family: "Roboto", sans-serif;
  color: #323238;
}

button {
  cursor: pointer;
  background: transparent;
  border: 0;
}

html.dark, 
html.dark #controls button,
html.dark #toggle-mode {
  background-color: #323238;
  color: #E5E5E5;
}

#toggle-mode {
  position: absolute;
  top: 3.2rem;
  right: 3.2rem;
  font-size: 3.2rem;
  line-height: 0;
  background: transparent;
}


html.dark .ph-moon,
html:not(.dark) .ph-sun {
  display: none;
}


#app {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 19.2rem;
  height: 100vh;
}

#timer span {
  font-size: 12.6rem;
  font-weight: 400;
} 

#controls {
  display: flex;
  align-items: center;
  gap: 4.0rem;
}

#controls button {
  border: none;
  background: transparent;
  font-size: 4.8rem;
}

#sounds {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.2rem;
}

#sounds button {
  border: none;
  padding: 4.8rem;
  border-radius: 2.4rem;
  background: #E1E1E6;
  font-size: 4.8rem;
}

#sounds button:active {
  background-color: #02799D;
}

.florestOn #florest, 
.rainOn #rain,
.cafeteriaOn #cafeteria, 
.fireOn #fire {
  background-color: #02799D;
}

.sr-only {
  width: 1px;
  height: 1px;
  position: absolute;
  overflow: hidden;
  margin: -1px;
  padding: 0px;
  border: 0;
  appearance: none;
}

.running .ph-play-circle,
html:not(.running) .ph-pause-circle {
  display: none;
}

@media (max-width: 900px) {
  #app {
    display: flex;
    flex-direction: column;
    gap: 6rem;
  }
}