body {
    font-family: 'Segoe UI', sans-serif;
    margin: 0;
    background-color: #f5f8fc;
    color: #1a1a1a;

}
header, footer {
    background: linear-gradient(90deg, #007bff, #0056b3);
    color: white;
    text-align: center;
    padding: 2rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    margin-left: auto;
}

nav a {
    margin: 0 1rem;
    color: white;
    text-decoration: none;
    font-weight: bold;
}
nav a:hover {
    color: #cce0ff;
}
main {
    max-width: 1000px;
    margin: auto;
    padding: 2rem;
}
section {
    margin-bottom: 3rem;
    animation: fadeIn 1s ease-in-out;
}
.section-alt {
    background-color: #eaf2fa;
    padding: 2rem;
    border-radius: 8px;
}
.certificates {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
}
.certificate {
    background: white;
    border-radius: 10px;
    padding: 1.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    max-width: 280px;
    text-align: center;
}
.certificate img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}
@keyframes fadeIn {
    from {opacity: 0; transform: translateY(20px);}
    to {opacity: 1; transform: translateY(0);}
}