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

body {
    font-family: Arial, sans-serif;
    background-color: #1a1a2e; 
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

#startPage, #quizSection {
    background: #16213e; 
    width: 90%;
    max-width: 500px;  
    padding: 60px 40px; 
    border-radius: 16px;
    text-align: center;
    color: #fff;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
    display: none; 
}

#startPage {
    display: block;
}

h1 {
    font-size: 2.4rem;
    margin-bottom: 35px;
    font-weight: bold;
}
h2 {
    font-size: 1.8rem;
    margin-bottom: 25px;
    color: #fff;
}

p {
    color: #cbd5e1; 
    margin-bottom: 35px;
    line-height: 1.6;
    font-size: 1.1rem;
}

button {
    width: 90%;
    padding: 18px;
    font-size: 1.2rem;
    font-weight: bold;
    color: #fff;
    background-color: #16213e;
    border: none;
    border-bottom: 4px solid #22c55e; 
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

button:hover {
    background-color: #22c55e;
    transform: translateY(-4px); 
    box-shadow: 0 6px 18px rgba(34, 197, 94, 0.5);
}