body {
    font-family: Arial, sans-serif;
    background: #eef7f0;
    text-align: center;
    padding: 20px;
    margin: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    width: 100%;
    padding: 20px 0;
    margin-bottom: 20px;
}

header h1 a {
    color: #2e8b57;
    text-decoration: none;
    font-size: 24px;
}

header nav {
    margin-top: 10px;
}

header nav a {
    margin: 0 10px;
    color: #555;
    text-decoration: none;
    font-size: 14px;
}

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

.category-nav {
    background: #fff;
    padding: 10px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.category-nav a {
    color: #555;
    text-decoration: none;
    font-size: 14px;
    padding: 8px 12px;
    border-radius: 5px;
    background: #f9f9f9;
}

.category-nav a.active {
    background: #2e8b57;
    color: white;
}

.container {
    width: 100%;
    max-width: 800px;
    margin: 0 auto 20px auto;
    background: white;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    box-sizing: border-box;
}

.main-content {
    flex: 1;
}

.page-content {
    text-align: left;
    line-height: 1.6;
}

.page-content h3 {
    color: #2e8b57;
    border-bottom: 2px solid #eef7f0;
    padding-bottom: 10px;
    margin-top: 20px;
}

#start-btn {
    display: inline-block;
    width: 100%;
    max-width: 300px;
    padding: 15px 30px;
    font-size: 18px;
    margin-top: 20px;
}

button, .form-button {
    display: block;
    width: 100%;
    padding: 15px;
    margin: 10px 0;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    background: #2e8b57;
    color: white;
    font-size: 16px;
    box-sizing: border-box;
    transition: background-color 0.3s;
}

button:hover, .form-button:hover {
    background: #256d46;
}

.resultBox {
    text-align: left;
    margin-top: 20px;
}

h2 {
    color: #2e8b57;
    font-size: 20px;
}

ul {
    padding-left: 20px;
    list-style-position: inside;
}

.restart {
    background: #444;
    margin-top: 20px;
}

#contact-form input,
#contact-form textarea {
    display: block;
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 10px;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
    font-size: 15px;
}

#contact-form textarea {
    height: 120px;
    resize: vertical;
}

.form-button {
    background: #6a7a89;
}

.form-button:hover {
    background: #505d69;
}

.hidden {
    display: none;
}

footer {
    width: 100%;
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
    color: #777;
    font-size: 12px;
    border-top: 1px solid #ddd;
}

footer nav {
    margin-top: 10px;
}

footer nav a {
    margin: 0 10px;
    text-decoration: none;
    color: #777;
}

/* Mobile Adjustments */
@media (max-width: 600px) {
    body {
        padding: 10px;
    }
    
    header h1 a {
        font-size: 20px;
    }
    
    .container {
        padding: 15px;
    }
    
    .category-nav a {
        font-size: 13px;
        padding: 6px 10px;
    }
    
    h2 {
        font-size: 18px;
    }
    

    .auth-container {
        max-width: 400px;
        margin: 40px auto;
    }

    .auth-form input {
        display: block;
        width: 100%;
        padding: 12px;
        margin: 10px 0;
        border: 1px solid #ccc;
        border-radius: 10px;
        box-sizing: border-box;
        font-size: 15px;
    }

    .auth-link {
        margin-top: 15px;
        display: block;
        color: #2e8b57;
        text-decoration: none;
        font-size: 14px;
    }

    .auth-link:hover {
        text-decoration: underline;
    }

    #auth-nav {
        display: inline-block;
        margin-left: 10px;
    }

    .nav-auth-btn {
        font-size: 14px;
        color: #2e8b57;
        text-decoration: none;
        cursor: pointer;
        font-weight: bold;
    }