/* Stili specifici per la pagina di ripasso */

.back-btn {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 25px;
    margin-top: 20px;
    transition: all 0.3s ease;
    font-weight: 600;
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.concept-section {
    margin-bottom: 50px;
}

.concept-section h2 {
    font-size: 2rem;
    margin-bottom: 30px;
    text-align: center;
    color: #333;
}

/* Card concetto principale */
.concept-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 25px;
    margin-bottom: 30px;
}

.concept-icon {
    font-size: 4rem;
    flex-shrink: 0;
}

.concept-content h3 {
    color: #667eea;
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.concept-content p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #555;
}

/* Griglia zone di roaming */
.zones-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.zone-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    border-left: 5px solid;
}

.zone-card:hover {
    transform: translateY(-5px);
}

.zone-card.italy {
    border-left-color: #4CAF50;
}

.zone-card.europe {
    border-left-color: #2196F3;
}

.zone-card.international {
    border-left-color: #f44336;
}

.zone-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.zone-header h3 {
    font-size: 1.4rem;
    margin: 0;
    color: #333;
}

.zone-badge {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
}

.zone-badge.free {
    background: #4CAF50;
    color: white;
}

.zone-badge.included {
    background: #2196F3;
    color: white;
}

.zone-badge.expensive {
    background: #f44336;
    color: white;
}

.zone-card p {
    color: #555;
    line-height: 1.5;
    margin: 0;
}

/* Griglia perché disattivare */
.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.why-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.why-card:hover {
    transform: translateY(-3px);
}

.why-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.why-card h3 {
    color: #f44336;
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.why-card p {
    color: #555;
    line-height: 1.5;
    margin: 0;
}

/* Griglia alternative */
.alternatives-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.alternative-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    border-top: 4px solid #4CAF50;
}

.alternative-card:hover {
    transform: translateY(-3px);
}

.alternative-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.alternative-card h3 {
    color: #4CAF50;
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.alternative-card p {
    color: #555;
    line-height: 1.5;
    margin: 0;
}

/* Griglia quando riattivare */
.when-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.when-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.when-card:hover {
    transform: translateY(-3px);
}

.when-card.safe {
    border-top: 4px solid #4CAF50;
}

.when-card.danger {
    border-top: 4px solid #f44336;
}

.when-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.when-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.when-card.safe h3 {
    color: #4CAF50;
}

.when-card.danger h3 {
    color: #f44336;
}

.when-card p {
    color: #555;
    line-height: 1.5;
    margin: 0;
}

/* Checklist */
.checklist {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
    font-size: 1.1rem;
}

.checklist-item:last-child {
    border-bottom: none;
}

.check-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

/* Pulsante torna indietro grande */
.back-btn-large {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    padding: 15px 30px;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.back-btn-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

/* Responsive Design */
@media (max-width: 768px) {
    .concept-card {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .concept-icon {
        font-size: 3rem;
    }
    
    .zones-grid,
    .why-grid,
    .alternatives-grid,
    .when-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .concept-section h2 {
        font-size: 1.6rem;
    }
    
    .zone-header {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}

/* Animazioni */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.concept-section {
    animation: fadeInUp 0.6s ease-out;
}

.concept-section:nth-child(2) {
    animation-delay: 0.1s;
}

.concept-section:nth-child(3) {
    animation-delay: 0.2s;
}

.concept-section:nth-child(4) {
    animation-delay: 0.3s;
}

.concept-section:nth-child(5) {
    animation-delay: 0.4s;
}

.concept-section:nth-child(6) {
    animation-delay: 0.5s;
}