:root {
  --wh-color-black: #000000;
  --wh-color-white: #ffffff;
  --wh-color-dark: #333333;
  --wh-color-medium: #999999;
  --wh-color-bright: #cccccc;
  --wh-color-light: #eeeeee;
}

#wh-calculator-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
@media screen and (max-width: 980px) {
  #wh-calculator-section {
    grid-template-columns: 1fr;
  }
}

#wh-calculator-form fieldset {
  margin-bottom: 2em;
  border: 2px solid var(--wh-color-black);
}

#wh-calculator-form legend {
  font-size: 1.2em;
}

#wh-calculator-form label {
  display: block;
  margin-bottom: 0.4em;
}

#wh-calculator-form input {
  display: block;
  font-size: 1em;
  margin-bottom: 0.5em;
  border: 1px solid var(--wh-color-black);
  padding: 0.4em;
  text-align: right;
  width: 5em;
}

.wh-button,
.wh-button-active {
  background-color: var(--wh-color-bright);
  color: var(--wh-color-black);
  padding: 0.5em 1em;
  border: none;
  border-radius: 0;
  cursor: pointer;
  font-size: 0.8em;
  font-family: var(--wp--preset--font-family--manrope);
}
.wh-button-active {
  background-color: var(--wh-color-dark);
  color: var(--wh-color-white);
}

#costComparisonChart {
  width: 100%;
  height: clamp(300px, 50vh, 500px);
  margin-top: 2em;
}

.wh-accordion-content {
  display: none;
  transition: max-height 0.3s ease;
}
.wh-accordion-content.open {
  display: block;
}

.wh-tooltip {
  cursor: pointer;
  margin-left: 0.5em;
  position: relative;
}

.wh-tooltip__icon {
  font-size: 1.1em;
  display: inline-block;
  color: var(--wh-color-medium);
}

.wh-tooltip__text {
    font-size: 0.8em;
  visibility: hidden;
  opacity: 0;
  width: 220px;
  background: var(--wh-color-light);
  text-align: left;
  border-radius: 0.4em;
  padding: 0.7em;
  position: absolute;
  z-index: 10;
  left: 130%;
  top: 50%;
  transform: translateY(-50%);
  transition: opacity 0.2s;
}

.wh-positive {
  color: green;
  font-weight: 700;
}

.wh-negative {
  color: red;
  font-weight: 700;
}

.wh-spacing-after {
  margin-bottom: 1em;
}