:root {
    --primary: #2E7D32;
    --primary-dark: #1B5E20;
    --primary-light: #E8F5E9;
    --danger: #C62828;
    --danger-light: #FFEBEE;
    --text: #263238;
    --text-light: #546E7A;
    --bg: #F5F7FA;
    --white: #FFFFFF;
    --border: #E0E0E0;
    --shadow: 0 10px 30px rgba(0,0,0,0.08);
}

/* ===== BODY (SENZA FLEX!) ===== */
body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* ===== HEADER ===== */
.site-header {
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 25px 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    text-align: center;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    font-size: 2.5rem;
    line-height: 1;
}

.logo-text {
    font-family: 'Georgia', serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    letter-spacing: -0.5px;
}

.logo-tagline {
    font-family: 'Segoe UI', sans-serif;
    font-size: 0.85rem;
    color: var(--text-light);
    font-style: italic;
    margin-top: 2px;
}

/* ===== HERO SECTION ===== */
.hero {
    background: linear-gradient(135deg, var(--primary-light) 0%, #ffffff 100%);
    padding: 60px 20px;
    text-align: center;
}

.hero-container {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-family: 'Georgia', serif;
    font-size: 2.5rem;
    color: var(--primary-dark);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-benefits {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
    text-align: left;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    background: var(--white);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.benefit-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.benefit-text {
    flex: 1;
}

.benefit-text strong {
    display: block;
    font-size: 1.1rem;
    color: var(--primary-dark);
    margin-bottom: 5px;
}

.benefit-text p {
    margin: 0;
    color: var(--text-light);
    font-size: 0.95rem;
}

.hero-cta {
    margin-top: 40px;
}

/* ===== QUIZ CONTAINER ===== */
.container {
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow);
    max-width: 650px;
    width: 100%;
    padding: 40px;
    margin: 40px auto;
    position: relative;
    overflow: hidden;
}

.step { display: none; animation: fadeIn 0.5s ease; }
.step.active { display: block; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

h1 { color: var(--primary); font-size: 1.8rem; margin-bottom: 10px; }
h2 { color: var(--text); font-size: 1.4rem; margin-top: 0; }
p.subtitle { color: var(--text-light); margin-bottom: 30px; font-size: 1.05rem; }

.question-box {
    background: var(--bg);
    border-left: 4px solid var(--primary);
    padding: 15px 20px;
    margin-bottom: 15px;
    border-radius: 0 8px 8px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s;
}

.question-box:hover { background: #eef2f5; }

.question-box label { font-weight: 500; cursor: pointer; flex: 1; margin-right: 15px; }

.radio-group { display: flex; gap: 15px; }
.radio-group input[type="radio"] { display: none; }
.radio-group label {
    padding: 6px 16px;
    border-radius: 20px;
    border: 1px solid #ccc;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}
.radio-group input[type="radio"]:checked + label {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.safety-box { border-left-color: var(--danger); }
.safety-box .radio-group input[type="radio"]:checked + label {
    background: var(--danger);
    border-color: var(--danger);
}

.btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 14px 30px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    width: 100%;
    margin-top: 20px;
    transition: transform 0.1s, opacity 0.2s;
}
.btn:hover { opacity: 0.9; transform: translateY(-2px); }
.btn:disabled { background: #ccc; cursor: not-allowed; transform: none; }

.btn-primary {
    background: var(--primary);
}

.btn-large {
    padding: 18px 40px;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(46, 125, 50, 0.3);
    transition: all 0.3s;
}

.btn-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(46, 125, 50, 0.4);
}

.result-box {
    padding: 25px;
    border-radius: 12px;
    margin-top: 20px;
}
.result-danger { background: var(--danger-light); border: 1px solid var(--danger); color: var(--danger); }
.result-success { background: var(--primary-light); border: 1px solid var(--primary); }

.chapter-tag {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: bold;
    margin-right: 8px;
    margin-bottom: 8px;
}

.progress-bar {
    height: 6px;
    background: #e0e0e0;
    border-radius: 3px;
    margin-bottom: 30px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    background: var(--primary);
    width: 0%;
    transition: width 0.4s ease;
}

.hero-note {
    margin-top: 15px;
    font-size: 0.9rem;
    color: var(--text-light);
}

/* ===== RESPONSIVE ===== */
@media (min-width: 768px) {
    .hero-benefits {
        flex-direction: row;
        text-align: center;
    }
    
    .benefit-item {
        flex-direction: column;
        text-align: center;
        flex: 1;
    }
    
    .benefit-text {
        text-align: center;
    }
    
    .hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 600px) {
    .hero {
        padding: 40px 20px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.05rem;
    }
    
    .btn-large {
        padding: 16px 30px;
        font-size: 1.1rem;
    }
    
    .logo-icon {
        font-size: 2rem;
    }
    
    .logo-text {
        font-size: 1.25rem;
    }
    
    .logo-tagline {
        font-size: 0.8rem;
    }
    
    .site-header {
        padding: 20px 15px;
    }
    
    .container {
        margin: 20px auto;
        padding: 30px 20px;
    }
}

/* ===== PULSANTI AFFIANCATI ===== */
.button-group {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    align-items: stretch;
}

.button-group .btn {
    margin-top: 0;
    flex: 1;
}

.btn-back {
    background: transparent !important;
    color: var(--text-light) !important;
    border: 1px solid var(--border) !important;
    flex: 0 0 auto !important;
    width: auto !important;
    padding: 14px 20px !important;
    font-weight: 500 !important;
    transition: all 0.2s !important;
    box-shadow: none !important;
}

.btn-back:hover {
    background: var(--bg) !important;
    color: var(--text) !important;
    border-color: var(--text-light) !important;
    transform: translateX(-2px) !important;
    opacity: 1 !important;
}

/* Su mobile, impila i pulsanti */
@media (max-width: 500px) {
    .button-group {
        flex-direction: column-reverse;
    }
    
    .btn-back {
        width: 100% !important;
    }
}