/* Technology Evolution Section Styles */
.technology-evolution-section {
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    margin: 2rem 0;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.technology-evolution-section h2 {
    color: #2c3e50;
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    font-weight: 700;
}

.evolution-content {
    max-width: 1200px;
    margin: 0 auto;
}

.evolution-intro {
    font-size: 1.2rem;
    line-height: 1.8;
    color: #495057;
    margin-bottom: 3rem;
    text-align: center;
}

.evolution-period {
    background: white;
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.evolution-period:hover {
    transform: translateY(-5px);
}

.evolution-period h3 {
    color: #2c3e50;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid #e9ecef;
    padding-bottom: 0.5rem;
}

.period-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

.period-list li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
}

.period-list li:before {
    content: "•";
    color: #007bff;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.period-list strong {
    color: #2c3e50;
}

/* Period-specific styling */
.early {
    border-left: 4px solid #28a745;
}

.industrial {
    border-left: 4px solid #dc3545;
}

.digital {
    border-left: 4px solid #007bff;
}

.modern {
    border-left: 4px solid #6f42c1;
}

.technology-impact {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    margin-top: 3rem;
}

.technology-impact h3 {
    color: #2c3e50;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.impact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

.pros, .cons {
    padding: 1.5rem;
    border-radius: 8px;
}

.pros {
    background: #e8f5e9;
    border: 1px solid #c8e6c9;
}

.cons {
    background: #ffebee;
    border: 1px solid #ffcdd2;
}

.pros h4, .cons h4 {
    color: #2c3e50;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    text-align: center;
}

.impact-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.impact-list li {
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
}

.impact-list li:before {
    content: "→";
    color: #2c3e50;
    position: absolute;
    left: 0;
}

.conclusion {
    text-align: center;
    font-size: 1.2rem;
    color: #2c3e50;
    margin-top: 2rem;
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 768px) {
    .technology-evolution-section {
        padding: 2rem 1rem;
    }

    .technology-evolution-section h2 {
        font-size: 2rem;
    }

    .evolution-period {
        padding: 1.5rem;
    }

    .impact-grid {
        grid-template-columns: 1fr;
    }

    .evolution-intro {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .technology-evolution-section h2 {
        font-size: 1.8rem;
    }

    .evolution-period h3 {
        font-size: 1.5rem;
    }

    .period-list li {
        font-size: 0.95rem;
    }
}

/* Technology History Section Styles */
.technology-history-section {
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    margin: 2rem 0;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.technology-history-section h2 {
    color: #2c3e50;
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    font-weight: 700;
}

.history-content {
    max-width: 1200px;
    margin: 0 auto;
}

.history-intro {
    font-size: 1.2rem;
    line-height: 1.8;
    color: #495057;
    margin-bottom: 3rem;
    text-align: center;
}

.history-period {
    background: white;
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.history-period:hover {
    transform: translateY(-5px);
}

.history-period h3 {
    color: #2c3e50;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid #e9ecef;
    padding-bottom: 0.5rem;
}

.history-period h4 {
    color: #2c3e50;
    font-size: 1.4rem;
    margin: 1.5rem 0 1rem;
}

.history-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

.history-list li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
}

.history-list li:before {
    content: "•";
    color: #007bff;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.sub-list {
    list-style: none;
    padding-left: 2rem;
    margin: 0.5rem 0;
}

.sub-list li {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.sub-list li:before {
    content: "→";
    color: #6c757d;
}

.history-list strong {
    color: #2c3e50;
}

.period-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 1.5rem 0;
}

/* Period-specific styling */
.ancient {
    border-left: 4px solid #28a745;
}

.medieval {
    border-left: 4px solid #fd7e14;
}

.industrial {
    border-left: 4px solid #dc3545;
}

.digital {
    border-left: 4px solid #007bff;
}

.modern {
    border-left: 4px solid #6f42c1;
}

.history-lessons {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    margin-top: 3rem;
    border: 1px solid #dee2e6;
}

.history-lessons h3 {
    color: #2c3e50;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

/* Responsive Design */
@media (max-width: 768px) {
    .technology-history-section {
        padding: 2rem 1rem;
    }

    .technology-history-section h2 {
        font-size: 2rem;
    }

    .history-period {
        padding: 1.5rem;
    }

    .period-details {
        grid-template-columns: 1fr;
    }

    .history-intro {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .technology-history-section h2 {
        font-size: 1.8rem;
    }

    .history-period h3 {
        font-size: 1.5rem;
    }

    .history-list li {
        font-size: 0.95rem;
    }
}