body {
    font-family: 'Comic Sans MS', cursive, sans-serif; 
    background: linear-gradient(135deg, #fffaf0, #b3e5fc);
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    color: #333;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    background-color: #ffffff;
    padding: 10px 15px;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.1);
    border-radius: 0 10px 10px 0; 
    z-index: 1000; 
}

.navbar ul {
    list-style: none; 
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.quiz-container {
    background: #ffffff;
    border-radius: 15px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    width: 90%;
    max-width: 450px;
    padding: 20px;
    text-align: center;
    position: relative;
}

header .header-image {
    width: 100%;
    max-width: 400px;
    margin-bottom: 10px;
}

h1 {
    font-size: 1.8em;
    color: #ffcc00;
}

button {
    background-color: #fff3cd;
    border: 2px solid #ffd966;
    border-radius: 20px;
    padding: 10px 20px;
    margin: 10px;
    cursor: pointer;
    font-size: 16px;
    color: #333;
    transition: transform 0.2s, background-color 0.3s;
}

button:hover {
    background-color: #ffe599;
    transform: scale(1.05);
}

.theme-button {
    border-radius: 50px;
    background: linear-gradient(45deg, #ffccff, #ffeeaa);
}

.hidden {
    display: none;
}

#options button {
    display: block;
    margin: 10px auto;
    width: 80%;
}

.option-button {
    background-color: #fff3cd;
    border: 2px solid #ffd966;
    border-radius: 10px;
    padding: 10px;
    margin: 10px auto;
    font-size: 16px;
    color: #333;
    cursor: pointer;
    width: 80%;
    transition: background-color 0.3s, transform 0.2s;
}

.option-button:hover {
    background-color: #ffe599;
    transform: scale(1.05);
}

.option-button.selected {
    background-color: #ffcc00;
    color: white;
    border-color: #ffaa00;
    transform: scale(1.1); 
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2); 
}

footer {
    font-size: 0.8em;
    color: #666; 
    text-align: center; 
    position: fixed; 
    bottom: 0; 
    left: 0;
    width: 100%; 
    background-color: #fff; 
    padding: 5px 10px; 
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.1); 
}

footer p {
    margin: 0;
}