body {
  background: linear-gradient(135deg, #e6f7e6 0%, #b8f5b8 100%);
  font-family: 'Poppins', sans-serif;
  animation: fadeIn 1s ease-in;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  padding: 2rem;
  margin-bottom: 2rem;
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2);
}
.faq-item {
  margin-bottom: 1rem;
}
details[open] {
  animation: slideOpen 0.3s ease;
}
@keyframes slideOpen {
  from { opacity: 0; max-height: 0; }
  to { opacity: 1; max-height: 500px; }
}
.input-field {
  border: 2px solid #22c55e;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.input-field:focus {
  outline: none;
  border-color: #16a34a;
  box-shadow: 0 0 8px #22c55e;
}
.btn {
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
  transition: transform 0.2s ease, box-shadow 0.3s ease;
}
.btn:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 16px rgba(34, 197, 94, 0.4);
}
.feedback-icon {
  font-size: 2rem;
  transition: color 0.3s ease, transform 0.3s ease;
}
.feedback-icon:hover {
  color: #16a34a;
  transform: scale(1.2);
}
.eco-tip {
  background: linear-gradient(135deg, #bbf7d0 0%, #86efac 100%);
  animation: pulse 4s infinite ease-in-out;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}
.icon-leaf {
  color: #22c55e;
}