.pk-container {
  max-width: 600px;
  margin:40px auto;
  background: #ffffff;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
  
}

.pk-title {
  text-align: center;
  margin-bottom: 25px;
  font-size: 26px;
  font-weight: bold;
}

.pk-row {
  display: flex;
  gap: 15px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.pk-col {
  flex: 1;
  min-width: 200px;
}

.pk-input {
  width: 100%;
  padding: 12px;
  border-radius: 6px;
  border: 1px solid #ccc;
  font-size: 16px;
}

.pk-btn {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 6px;
  background: #007bff;
  color: white;
  font-size: 17px;
  cursor: pointer;
  transition: 0.3s;
}

.pk-btn:hover {
  background: #0056b3;
}

.pk-result {
  margin-top: 50px;
  padding: 25px;
  background: #f8f9fa;
  border-radius: 8px;
  display: none;
}

.pk-result h3 {
  margin-top: 0;
}

.pk-result-box {
  margin-top: 15px;
  font-size: 18px;
}

/* Responsive */
@media(max-width: 768px) {
  .pk-row {
    flex-direction: column;
  }
}