/* Reset dan dasar */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #f5f7fa;
  margin: 0;
  padding: 20px;
  line-height: 1.6;
  color: #333;
}

.container {
  max-width: 600px;
  width: 95%;
  margin: 30px auto;
  background: #fff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

h1 {
  text-align: center;
  margin-bottom: 25px;
  color: #2c3e50;
  font-size: 28px;
}

/* Form elements */
form input,
form select,
form textarea {
  width: 100%;
  padding: 12px 15px;
  margin-bottom: 20px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 16px;
  transition: border 0.3s;
}

form input:focus,
form select:focus,
form textarea:focus {
  border-color: #25d366;
  outline: none;
  box-shadow: 0 0 0 2px rgba(37, 211, 102, 0.2);
}

textarea {
  min-height: 100px;
  resize: vertical;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: #2c3e50;
}

/* Button styles */
button {
  background-color: #25d366;
  color: white;
  border: none;
  padding: 14px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

button:hover {
  background-color: #1da851;
  transform: translateY(-2px);
}

/* Price options */
.price-options {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.price-option {
  display: flex;
  align-items: center;
  padding: 15px;
  border: 1px solid #ddd;
  border-radius: 8px;
  transition: all 0.3s;
}

.price-option:hover {
  border-color: #25d366;
}

.price-option input[type="radio"] {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid #ddd;
  border-radius: 50%;
  margin-right: 15px;
  position: relative;
  cursor: pointer;
}

.price-option input[type="radio"]:checked {
  border-color: #25d366;
}

.price-option input[type="radio"]:checked::after {
  content: '';
  position: absolute;
  width: 10px;
  height: 10px;
  background: #25d366;
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.price-option label {
  flex: 1;
  cursor: pointer;
  margin-bottom: 0;
}

.label-title {
  font-weight: 600;
  font-size: 16px;
  color: #2c3e50;
  display: block;
  margin-bottom: 5px;
}

.label-pricing {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.price-old {
  text-decoration: line-through;
  color: #e74c3c;
  font-size: 14px;
}

.price-discount {
  background: #f8d7da;
  color: #721c24;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.price-now {
  color: #27ae60;
  font-weight: 700;
  font-size: 16px;
}

/* Success message */
#success-message {
  text-align: center;
  padding: 20px;
  background: #e8f5e9;
  border-radius: 8px;
  margin-top: 20px;
  display: none;
}

.success-icon {
  font-size: 40px;
  color: #27ae60;
  margin-bottom: 10px;
}

/* Loading state */
.loading-spinner {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 480px) {
  .container {
    padding: 20px;
  }
  
  h1 {
    font-size: 24px;
  }
  
  .label-pricing {
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
  }
}