body {
  font-family: system-ui, sans-serif;
  margin: 24px auto;
  max-width: 720px;
  padding: 0 16px;
  background: #f8fafc;
  color: #1f2937;
}

.card {
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.05);
}

textarea {
  width: 100%;
  min-height: 150px;
  padding: 12px;
  border: 1px solid #d1d5db;
  border-radius: 12px;
  box-sizing: border-box;
  font: inherit;
  resize: vertical;
}

.question-block {
  margin: 16px 0;
  padding: 14px;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  background: #f8fafc;
}

.choice-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.choice-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border: 1px solid #d1d5db;
  border-radius: 999px;
  background: white;
  cursor: pointer;
  font-weight: 600;
  color: #374151;
}

.card-nav {
  margin-bottom: 16px;
}

.card-nav h1 {
  margin: 0;
  font-size: 22px;
}

.actions {
  margin-top: 16px;
  display: flex;
  justify-content: center;
}

.alert {
  margin-bottom: 16px;
  padding: 12px 14px;
  border-radius: 12px;
}

.alert-success {
  background: #ecfdf5;
  border: 1px solid #86efac;
  color: #166534;
}

.alert-error {
  background: #fef2f2;
  border: 1px solid #fca5a5;
  color: #991b1b;
}

@media (max-width: 639px) {
  body {
    margin-top: 12px;
    padding-bottom: calc(56px + env(safe-area-inset-bottom) + 16px);
  }
}