/* Reset some basic elements to avoid cross-browser issues */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: #f4f4f4;
    color: #333;
    line-height: 1.6;
}

header, footer {
    background-color: #333;
    color: white;
    padding: 10px 0;
    text-align: center;
}

header {
    border-bottom: 2px solid #4CAF50;
}

footer {
    border-top: 2px solid #4CAF50;
}

main {
    padding: 20px;
    max-width: 800px;
    margin: 20px auto;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    color: #4CAF50;
    margin-bottom: 10px;
}

p {
    margin-bottom: 20px;
}

button {
    background-color: #4CAF50;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #45a049;
}

input[type="text"], input[type="email"], textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin-top: 6px;
    margin-bottom: 16px;
    font-size: 16px;
}

form {
    max-width: 600px;
    margin: 0 auto;
}

.info-box {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 20px;
    margin: 20px 0;
}

.info-box h2 {
    color: #333;
    margin-top: 0;
}

.info-box p {
    margin: 10px 0;
}

nav ul {
    list-style-type: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin-right: 10px;
}

nav ul li a {
    color: white;
    text-decoration: none;
}

nav ul li a:hover {
    text-decoration: underline;
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.overlay-content {
    background: white;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}

.loader {
    border: 6px solid #f3f3f3;
    border-radius: 50%;
    border-top: 6px solid #4CAF50;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive adjustments */
@media (max-width: 600px) {
    header, footer {
        padding: 15px;
    }

    main {
        margin: 10px;
        padding: 15px;
    }

    button {
        padding: 10px;
        font-size: 14px;
    }
}