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

body {
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.8; 
    background-color: var(--bg);
    color: white;
}

main {
    max-width: 800px;
    width: 100%;        
    margin: 0 auto;     
    padding: 0 20px;
    padding-top: 120px;
}

.headerLezione {
    text-align: left;
}

.headerLezione h1 {
    font-size: 50px;
    margin-bottom: 10px;
    color: white;
}

.headerLezione h3 {
    font-size: 15px;
    color: gray;
}

.headerLezione .info-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin: 20px 0;
}

.badge {
    background-color: #252525;
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 13px;
    color: #8f00ff;
    border: 1px solid #333;
    font-weight: bold;
}

.headerLezione img, 
video,
.contenutoLezione img {
    width: 100%;
    height: auto;
    border-radius: 25px;
    margin-top: 20px;
}

.contenutoLezione {
    margin-top: 40px;
}

.contenutoLezione h2 {
    position: relative;
    display: inline-block; 
    margin-top: 45px;
    margin-bottom: 25px;
    font-size: 28px;
    color: #ffffff;
}

.contenutoLezione h2::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #8f00ff, transparent);
    border-radius: 2px;
}

.contenutoLezione p {
    color: #cccccc; 
    font-size: 18px;
    margin-bottom: 25px;
    text-align: left;
}

.domande {
    margin-top: 60px;
    margin-bottom: 40px;
    padding: 30px;
    background: linear-gradient(145deg, #1a1a1a, #151515);
    border-left: 4px solid var(--violet);
    border-radius: 15px;
    color: white;
}

.domande h2 {
    margin-bottom: 25px;
    font-size: 28px;
}

.domanda {
    display: flex;
    flex-direction: column; 
    gap: 15px;
    margin-bottom: 20px;
}

.domanda h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.radio-container {
    display: flex;
    align-items: flex-start;
    gap: 12px;              
    padding: 15px;
    background-color: #1e1e1e;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.radio-container:hover {
    background-color: #252525;
}

.radio-container input[type="radio"] {
    min-width: 18px;
    height: 18px;
    margin-top: 4px;
    accent-color: #8f00ff;
}

.radio-container span {
    font-size: 16px;
    line-height: 1.4;
    color: #e0e0e0;
}

button {
    padding: 12px 25px;
    margin-top: 15px;
    background-color: #8f00ff;
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

button:hover {
    background-color: #7003c4;
}

@media (max-width: 768px) {
    main {
        padding: 20px;
        padding-top: 120px;
    }
    .headerLezione h1 {
        font-size: 32px;
    }
    .headerLezione h3 {
        font-size: 12px;
    }
    .contenutoLezione h2 {
        font-size: 22px;
    }
    .contenutoLezione p {
        font-size: 16px;
    }
    .domande h2 {
        font-size: 22px;
    }
    .domande h3 {
        font-size: 18px;
    }
}