body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background: #f8f9fa;
  color: #222;
}

.header {
  background: linear-gradient(135deg, #2e7d32, #1e88e5);
  color: white;
  padding: 2rem;
  text-align: center;
  border-bottom: 5px solid #81c784;
}

.hero {
  text-align: center;
  padding: 2rem;
}

.hero h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.hero p {
  color: #555;
}

.button-group {
  margin-top: 1rem;
}

.btn {
  padding: 0.8rem 1.5rem;
  margin: 0.5rem;
  background: #1e88e5;
  color: white;
  border: none;
  border-radius: 25px;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: 0.3s;
}

.btn:hover {
  background: #1565c0;
}

.whatsapp-btn {
  background: #25D366;
}

.whatsapp-btn:hover {
  background: #128c7e;
}

.how-to-order,
.features,
.order-section {
  padding: 2rem;
  max-width: 700px;
  margin: auto;
}

.how-to-order h3,
.features h3,
.guide-box h3 {
  margin-bottom: 1rem;
  color: #2e7d32;
}

.features .feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  text-align: center;
  margin-top: 1rem;
}

.feature-grid div {
  background: #e8f5e9;
  padding: 1rem;
  border-radius: 10px;
  font-weight: 500;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1rem;
  background: white;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.medicine-entry {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.medicine-entry input[type="text"],
.medicine-entry input[type="number"] {
  flex: 1;
  padding: 0.5rem;
}

.medicine-entry button {
  background: #e53935;
  color: white;
  border: none;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  border-radius: 5px;
}

input, select, button {
  font-size: 1rem;
}

button[type="submit"] {
  background: #2e7d32;
  color: white;
  padding: 0.8rem;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button[type="submit"]:hover {
  background: #1b5e20;
}

#empty-cart-warning {
  color: red;
  font-weight: bold;
}

footer {
  background: #1e88e5;
  color: white;
  padding: 2rem;
  text-align: center;
  margin-top: 2rem;
}

footer .social-icons img {
  width: 30px;
  margin: 0.3rem;
  filter: brightness(0) invert(1);
}

.services, .contact {
  margin-top: 1rem;
}

@media screen and (max-width: 600px) {
  .medicine-entry {
    flex-direction: column;
  }
}
.floating-whatsapp {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #25D366;
  color: white;
  font-size: 1.5rem;
  padding: 12px 16px;
  border-radius: 50%;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  z-index: 999;
  transition: background 0.3s ease;
  text-decoration: none;
}

.floating-whatsapp:hover {
  background-color: #128c7e;
}