body {
  font-family: Arial, Helvetica, sans-serif;
}

button {
  padding: 12px 20px;
  background-color: #fff;
  border: 2px solid black;
  border-radius: 10px;

  font-size: 1.25rem;

  transition: all 50ms;
}
button:hover {
  box-shadow: gray 4px 4px;
  transform: translate(-2px, -2px);
}
button:active {
  box-shadow: none;
  transform: translateY(0);
}

.main-container {
  display: flex;
  padding: 20px;
  gap: 30px;

  position: relative;
}

#back-button {
  position: absolute;
  right: 20px;
  top: 20px;
  z-index: 100;
}

#canvas-resizer {
  height: 800px;
  width: 800px;
  
  min-height: 200px;
  min-width: 200px;

  border: 2px solid black;

  resize: both;
  overflow: hidden;

  position: relative;
}
#canvas-resizer::after {
  content: "";
  height: 40px;
  width: 40px;
  background-color: rgb(255, 103, 103);
  opacity: 0.5;

  position: absolute;
  right: -20px;
  bottom: -20px;

  transform: rotate(45deg);
}

canvas {
  background: #fff;
  margin: 0;
  padding: 0;

  height: 100%;
  width: 100%;
}



.ui-container {
  font-size: 1.5rem;

  display: flex;
  align-items: stretch;
  justify-content: start;

  gap: 40px
}

.ui-column {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 20px;
}

form {
  width: 210px;
  border: 3px dashed darkgray;
  border-radius: 10px;
  padding: 15px 20px;

  display: flex;
  flex-direction: column;
  align-items: stretch;

  gap: 15px;
}

.form-row {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
}

input[type=number] {
  font-size: 1.5rem;
  border: none;
  border-bottom: 1px solid black;
  border-radius: 0;
}

input[type=submit] {
  font-size: 1.25rem;
  height: 40px;

  background: none;
  border: 1px solid black;
  border-radius: 5px;

  transition: all 50ms;
}
input[type=submit]:hover {
  box-shadow: gray 3px 3px;
  transform: translate(-2px, -2px);
}
input[type=submit]:active {
  box-shadow: none;
  transform: translateY(0);
}

/*
Remove arrow buttons on number input
https://www.w3schools.com/howto/howto_css_hide_arrow_number.asp
*/

/* Chrome, Safari, Edge, Opera */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Firefox */
input[type=number] {
  appearance: textfield;
  -moz-appearance: textfield;
}


/* https://www.w3schools.com/howto/howto_js_rangeslider.asp */
.slider {
  -webkit-appearance: none;
  appearance: none;

  height: 10px;

  border-radius: 5px;  
  background: #d3d3d3;
  outline: none;
  opacity: 0.7;
  
  -webkit-transition: .2s;
  transition: opacity .2s;
}

.slider:active {
  opacity: 1;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;

  width: 25px;
  height: 25px;

  border-radius: 50%; 
  background: #04AA6D;
  cursor: pointer;
}

.slider::-moz-range-thumb {
  width: 25px;
  height: 25px;

  border-radius: 50%;
  background: #04AA6D;
  cursor: pointer;
}




.readings-container {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

h1 {
  font-size: 2rem;
  margin: 0;
  padding: 0;

  margin-bottom: 40px;
}

h4 {
  margin: 0;
  font-weight: normal;
}
h4 span {
  font-weight: bold;
}


#speed-graph {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  align-items: end;
}

#histogram1 {
  border: 2px solid darkgray;
  border-radius: 10px;
  overflow: hidden;
}