:root {
  --bg: radial-gradient(1200px 600px at 10% 10%, #e0f7fa 0%, #ffffff 40%, #fefefe 100%);
  --calc-ar: 4 / 5;
}
html, body {
  height: 100%;
}
body {
  background: var(--bg);
}
html body {
  padding-top: 0;
}
.calc-wrap {
  aspect-ratio: var(--calc-ar);
  width: min(100vw, calc(100vh * var(--calc-ar)));
  max-width: 800px;
  height: auto;
}
.card, .card-body {
  height: 100%;
}
.card-body {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.form-container {
  background-color: #f8f9fa;
  border-radius: 0.5rem;
  padding: 1rem;
}
.results {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.result-card {
  background: linear-gradient(135deg, #00bcd4 0%, #009688 100%);
  border-radius: 0.5rem;
  padding: 1rem;
  color: white;
  text-align: center;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
.result-label {
  font-size: 0.9rem;
  opacity: 0.9;
  margin-bottom: 0.5rem;
}
.result-value {
  font-size: 1.5rem;
  font-weight: 700;
}
.chart-container {
  height: 200px;
  margin-top: 1rem;
}
@media (max-width: 767.98px) {
  .results {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  .result-value {
    font-size: 1.25rem;
  }
  .chart-container {
    height: 180px;
  }
}
@media (min-width: 768px) and (max-width: 991.98px) {
  :root { --calc-ar: 11 / 14; }
}
@media (min-width: 992px) {
  :root { --calc-ar: 4 / 5; }
  .calc-wrap {
    max-width: 800px;
  }
}