* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body, html {
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
    color: #333;
    min-height: 100%;
    animation: fadeIn 1s ease-in-out;
}

header {
    background-color: #004080;
    color: white;
    padding: 20px;
    text-align: center;
}

nav ul {
    list-style: none;
    margin-top: 10px;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    position: relative;
    transition: color 0.3s;
}

nav a::after {
    content: "";
    display: block;
    height: 2px;
    background-color: white;
    transform: scaleX(0);
    transition: transform 0.3s ease-in-out;
    transform-origin: left;
}

nav a:hover::after {
    transform: scaleX(1);
}

main {
    padding: 40px;
    text-align: center;
}

.card {
    background: white;
    padding: 30px;
    margin: 0 auto;
    max-width: 600px;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

button.ripple {
    padding: 10px 20px;
    background-color: #004080;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: background-color 0.3s;
}

button.ripple:hover {
    background-color: #002f5f;
}

button.ripple::after {
    content: "";
    position: absolute;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    transform: scale(0);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.6s ease-out, opacity 1s ease;
}

footer {
    text-align: center;
    padding: 15px;
    background-color: #004080;
    color: white;
    position: fixed;
    bottom: 0;
    width: 100%;
}

/* Fade in on load */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 600px) {
    nav ul {
        flex-direction: column;
        align-items: center;
    }

    .card {
        margin: 20px;
    }
}