body {
    font-family: 'Poppins', sans-serif;
    background-color: #e3f2fd;
    text-align: center;
    margin: 0;
    padding: 0;
}
header {
    background: linear-gradient(90deg, #1565c0, #1e88e5);
    color: white;
    padding: 20px;
    font-size: 28px;
    text-transform: uppercase;
    font-weight: bold;
    animation: fadeIn 2s ease-in-out;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    position: relative;
}
@keyframes fadeIn {
    0% { opacity: 0; transform: translateY(-20px); }
    100% { opacity: 1; transform: translateY(0); }
}
.categories {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 40px 0;
    flex-wrap: wrap;
}
.category {
    background: linear-gradient(135deg, #1976d2, #42a5f5);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    text-decoration: none;
    color: white;
    font-size: 20px;
    text-align: center;
    width: 260px;
    transition: transform 0.3s ease-in-out, background 0.3s ease-in-out;
    animation: slideIn 1s ease-in-out;
    font-weight: bold;
}
.category:hover {
    transform: scale(1.1);
    background: linear-gradient(135deg, #0d47a1, #1976d2);
}
.category i {
    font-size: 50px;
    margin-bottom: 10px;
    color: white;
    transition: transform 0.3s ease-in-out;
}
.category:hover i {
    transform: rotate(360deg);
}
@keyframes slideIn {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}
.items {
    list-style: none;
    padding: 0;
}
.items a {
    display: block;
    background: linear-gradient(135deg, #1565c0, #1e88e5);
    color: white;
    text-decoration: none;
    padding: 12px;
    border-radius: 8px;
    margin: 8px 0;
    transition: background 0.3s ease-in-out, transform 0.3s ease-in-out;
}
.items a:hover {
    background: linear-gradient(135deg, #0d47a1, #1565c0);
    transform: scale(1.05);
}
.back {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 20px;
    background: #1565c0;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}
footer {
    margin-top: 20px;
    background: #0d47a1;
    color: white;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}
.whatsapp-container {
    display: flex;
    align-items: center;
    gap: 10px;
}
.whatsapp-icon {
    font-size: 30px;
    color: white;
}
.whatsapp a {
    font-size: 20px;
    text-decoration: none;
    color: white;
    font-weight: bold;
}
.qr-code {
    width: 20px;
    height: 20px;
}