.tool-layout {
  display: grid;
  grid-template-columns: 1fr minmax(320px, 700px) 1fr;
  gap: 1.5rem;
  padding: 2rem 1rem;
}

.tool-card {
  border-radius: 16px;
  padding: 2.5rem 2rem;
  text-align: center;
  color: #fff;
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

.tool-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 3rem;
}

.primary-btn {
  background: #1e3a8a;
  color: #fff;
  border: none;
  padding: 0.9rem 1.4rem;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s ease;
}

.primary-btn:hover { background: #2563eb; }

.output-box {
  background: rgba(255,255,255,0.15);
  border-radius: 10px;
  padding: 1rem;
  color: #f1f5f9;
}

.hidden { display: none; }