.digital-assignment {
  max-width: 900px;
  padding-top: 2rem;
  padding-bottom: 3rem;
}

.digital-controls {
  display: grid;
  grid-template-columns: auto minmax(12rem, 1fr) auto auto;
  align-items: center;
  gap: 0.75rem;
  margin: 1.5rem 0 0.75rem;
}

.digital-problem {
  min-height: 15rem;
  padding: 1.5rem;
  border: 1px solid #dee2e6;
  border-radius: 0.5rem;
  background: #fff;
}

.digital-problem img,
.digital-problem canvas {
  max-width: 100%;
  height: auto;
}

.digital-check-work {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid #adb5bd;
}

.digital-math-input {
  min-height: 3.25rem;
  margin: 0.5rem 0 1rem;
  padding: 0.75rem;
  border: 1px solid #adb5bd;
  border-radius: 0.25rem;
  background: #fff;
}

.digital-cas-result {
  min-height: 1.5rem;
  margin-top: 0.75rem;
}

@media (max-width: 600px) {
  .digital-controls {
    grid-template-columns: 1fr 1fr;
  }

  .digital-controls label {
    grid-column: 1 / -1;
  }

  .digital-controls select {
    grid-column: 1 / -1;
  }
}

.digital-check-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(8rem, 1fr);
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.digital-check-row .digital-math-input {
  margin: 0;
}

.digital-check-row .digital-cas-result {
  margin-top: 0;
}

.digital-help {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.digital-hint,
.digital-solution,
.digital-target {
  margin-top: 0.75rem;
  padding: 0.75rem;
  border-radius: 0.25rem;
  background: #f8f9fa;
}

.mathhelper {
  max-width: 1200px;
  padding-top: 2rem;
  padding-bottom: 3rem;
}

.mathhelper-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.mathhelper-variable {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.mathhelper-variable-input {
  width: 4rem;
}

.mathhelper-column .digital-check-row {
  grid-template-columns: minmax(0, 1fr) auto;
}

.mathhelper-column .digital-cas-result {
  grid-column: 1 / -1;
}

@media (max-width: 900px) {
  .mathhelper-columns {
    grid-template-columns: 1fr;
  }
}