/* Apply natural box-sizing to all elements */
* {
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Body styling */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #fafafa;
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header styling */
header {
    background-color: #4CAF50;
    color: white;
    text-align: center;
    padding: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header h1 {
    margin: 0;
}

header h2 {
    margin: 5px 0 0 0;
    font-weight: normal;
}

/* Navigation styling */
nav {
    background-color: #333;
}

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

nav li {
    float: left;
}

nav li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 20px;
    text-decoration: none;
}

nav li a:hover {
    background-color: #111;
}

/* Main / Section styling */
main, section {
    max-width: 900px;
    margin: 30px auto;
    padding: 20px;
    line-height: 1.7;
    font-size: 18px;
    font-family: 'Georgia', serif;
    text-align: left;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* Headings */
h2 {
    font-family: 'Arial', sans-serif;
    font-size: 28px;
    text-align: center;
    margin-bottom: 20px;
}

/* Paragraphs */
main p, section p {
    margin-bottom: 20px;
}

/* Images */
main img, section img {
    width: 100%;
    max-width: 900px;
    display: block;
    margin: auto;
    border-radius: 10px;
}

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

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

/* Select dropdowns */
select {
    padding: 10px;
    font-size: 16px;
    margin-top: 10px;
    border-radius: 5px;
}

/* Result sections */
#result, #factResult {
    margin-top: 20px;
    font-weight: bold;
    font-size: 18px;
    text-align: center;
}

/* Footer styling */
footer {
    text-align: center;
    padding: 10px;
    background-color: #f2f2f2;
    margin-top: 20px;
}

footer p {
    color: #333;
}

/* Special welcome message */
#welcomeMessage {
    text-align: center;
    font-weight: bold;
    font-size: 20px;
    color: #4CAF50;
    margin-bottom: 20px;
}

/* FAQ styling with images */
dl#faq {
    width: 85%;
    margin: 0 auto;
    padding-bottom: 10px;
}

dl#faq dt {
    background: url("../images/greenminus.webp") left center/25px no-repeat;
    font-size: 1.2em;
    display: block;
    margin: 10px 0;
    text-indent: 60px;
    color: #4CAF50;
    cursor: pointer;
    user-select: none;
}

dl#faq dt.hiddenAnswer {
    background: url("../images/greenplus.jpg") left center/25px no-repeat;
}

dt + dd {
    display: none;
}

dl#faq dd p {
    font-size: 1.2em;
    line-height: 1.2;
    margin: 0 0 15px 65px;
    font-family: 'Georgia', serif;
    text-align: left;
}

/* Plus/minus image inline with text (if needed elsewhere) */
span.plusminus img {
    display: inline-block;
    width: 30px;
    margin: -5px 30px -5px 10px;
}

/* Responsive adjustments */
@media screen and (max-width: 600px) {
    nav li {
        float: none;
    }
    
    main, section {
        margin: 20px 10px;
        padding: 15px;
        font-size: 16px;
    }

    h2 {
        font-size: 24px;
    }
}