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

html, body {
    height: 100%;
    margin: 0;
    display: flex;
    flex-direction: column;
    font-family: Arial, sans-serif;
    background-color: #d4d7d9;
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px;
    background-color: #333;
    color: white;
}

.logo {
    width: 5rem;
    height: 5rem;
    border-radius: 50%;
    object-fit: cover;
}

nav {
    display: none; /* Hidden by default on small screens */
    flex-direction: column;
    justify-content: center;
}

.nav-toggle {
    display: none; /* Hide button by default */
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
}

/* Hidden checkbox */
.nav-toggle-checkbox {
    display: none;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column; /* Vertical by default */
    gap: 10px;
}

nav ul li a {
    text-decoration: none;
    color: white;
    padding: 10px;
    display: block;
}

main {
    flex: 1;
    padding: 20px;
}

.cards-container {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
}

.card-area {
    gap: 20px;
}

.cards-container > .card-area:first-child {
    grid-column: span 12;
    grid-template-columns: repeat(3, 1fr);
}

.cards-container > .card-area:last-child {
    grid-column: span 12;
    grid-template-columns: repeat(4, 1fr);
}
.card-characteristics .card-introduction {
    background-color: #ef5350;;
}

.card-characteristics .card-habitat {
    background-color: #e53935;
}

.card-characteristics .card-avoidance {
    background-color: #d32f2f;
}

.card-sightings .card-outback {
    background-color: #e0e0e0;
}

.card-sightings .card-urban-legends {
    background-color: #bdbdbd;
}

.card-sightings .card-famous-encounter {
    background-color: #9e9e9e;
}

.card-sightings .card-myth-reality {
    background-color: #757575;
}

.card {
    border: 1px solid #ccc;
    padding: 15px;
    background-color: #fff;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.card h2 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.card p {
    margin-bottom: 10px;
    line-height: 1.6;
}

.card a {
    display: inline-block;
    margin-top: 10px;
    color: #333;
    text-decoration: underline;
}

.card a:hover {
    text-decoration: underline;
}

main p {
    margin-bottom: 2rem;
}

form {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
    max-width: 400px;
    margin: 0 auto;
}

label {
    font-weight: bold;
    margin-bottom: 2px;
}

input, select, button {
    padding: 10px;
    font-size: 1rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    width: 100%;
    box-sizing: border-box;
}

button {
    background-color: #007bff;
    color: white;
    cursor: pointer;
    border: none;
}

button:hover {
    background-color: #0056b3;
}

.required {
    color: red;
    font-size: 0.9rem;
}

fieldset {
    border: 1px solid #ccc;
    padding: 10px;
    border-radius: 4px;
}

legend {
    font-weight: bold;
}

fieldset label {
    margin-left: 0.25rem;
}

label[for="checkbox_yes"] {
    display: inline-flex;
    align-items: center;
    gap: 1px;
}

footer {
    text-align: center;
    background-color: #333;
    color: white;
    padding: 10px;
    margin-top: 20px;
}

@media (max-width: 40rem) {
    .nav-toggle {
        display: block; /* Show the toggle button on small screens */
        font-size: 2rem;
        color: white;
        cursor: pointer;
    }

    /* Slide-in menu */
    nav {
        display: flex;
        position: fixed;
        top: 0;
        left: -100%; /* Hidden off-screen */
        height: 100%;
        width: 70%;
        background-color: #333;
        transition: left 0.3s ease-in-out;
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
    }

    /* When checkbox is checked, slide in the menu */
    .nav-toggle-checkbox:checked + label + nav {
        left: 0; /* Show the menu */
    }

    .nav-toggle:focus + nav {
        left: 0;
    }

    nav:focus-within {
        left: 0;
    }

    /* Hide top-level links (Menu, External Links) on small screens */
    nav ul li > button {
        display: none;
    }

    /* Ensure that submenu items are visible */
    nav ul li ul {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    /* Submenu link styling */
    nav ul li ul li a {
        display: block;
        padding: 10px;
        color: white;
        text-decoration: none;
    }

    nav ul li ul li a:hover,
    nav ul li ul li a:focus {
        background-color: #555;
    }

    .card-area {
        /*display: grid;*/
    }
}

/* Dropdown styles for wider screens */
@media (min-width: 40rem) {
    nav {
        display: flex;
        flex-direction: row;
        padding: 0 4rem;
    }

    nav ul li > button {
        background: none;
        border: none;
        color: white;
        font-size: 1rem;
        cursor: pointer;
        padding: 0;
        text-decoration: none;
        display: inline;
    }

    nav ul li > button:hover {
        color: #ddd;
    }

    nav ul {
        flex-direction: row;
        gap: 20px;
    }

    nav ul li {
        position: relative;
    }

    nav ul li ul {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        background-color: #444;
        width: 200px;
        z-index: 10;
    }

    nav ul li:hover ul {
        display: block;
    }

    /* Submenu link styling */
    nav ul li ul li a {
        padding: 10px;
        background-color: #444;
        color: white;
        display: block;
        text-align: left;
    }

    nav ul li:hover ul,
    nav ul li:focus-within ul {
        display: block;
    }

    nav ul li ul li a {
        display: block;
        color: white;
        padding: 10px;
        text-decoration: none;
        background-color: #444;
    }

    nav ul li ul li a:hover {
        background-color: #555;
    }

    .card-area {
        display: grid;
        gap: 20px;
    }

    .cards-container > .card-area:first-child {
        grid-column: span 12;
        grid-template-columns: repeat(3, 1fr);
    }

    .cards-container > .card-area:last-child {
        grid-column: span 12;
        grid-template-columns: repeat(4, 1fr);
    }
}