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

body {
    font-family: 'Georgia', serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f8f8;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    padding: 30px 0;
    background-color: #e3f2fd;
    border-radius: 5px;
    margin-bottom: 30px;
}

h1 {
    color: #2c6e49;
    margin-bottom: 10px;
    font-size: 2.5rem;
}

.subtitle {
    font-style: italic;
    color: #555;
}

/* Timeline Controls */
.timeline-controls {
    background-color: #f1f8e9;
    padding: 20px;
    border-radius: 5px;
    margin-bottom: 30px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.time-period-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.period-btn {
    padding: 12px 20px;
    background-color: #dcedc8;
    border: 1px solid #aed581;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1rem;
}

.period-btn:hover {
    background-color: #c5e1a5;
    transform: translateY(-2px);
}

.period-btn.active {
    background-color: #8bc34a;
    color: white;
    font-weight: bold;
    box-shadow: 0 3px 5px rgba(0,0,0,0.2);
}

/* Visualization Section */
.visualization-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 30px;
}

.metric-toggles {
    flex: 1;
    min-width: 250px;
    background-color: #e8f5e9;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.metric-toggles h3 {
    margin-bottom: 10px;
    color: #2c6e49;
}

.toggle-info {
    font-size: 0.9rem;
    margin-bottom: 15px;
    color: #666;
    font-style: italic;
}

.toggle-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
}

.toggle-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toggle-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.toggle-item label {
    cursor: pointer;
}

.toggle-item input[type="checkbox"]:disabled + label {
    color: #999;
    cursor: not-allowed;
}

.graph-container {
    flex: 2;
    min-width: 300px;
    height: 400px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    padding: 20px;
}

/* Historical Context */
.historical-context {
    margin-top: 40px;
}

.period-container {
    background-color: #fff;
    padding: 25px;
    border-radius: 5px;
    margin-bottom: 30px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.period-content {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.period-text {
    flex: 1;
    min-width: 300px;
}

.period-image {
    flex: 1;
    min-width: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.period-image img {
    max-width: 100%;
    border-radius: 5px;
    box-shadow: 0 3px 8px rgba(0,0,0,0.2);
}

.period-container h2 {
    color: #2c6e49;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e8f5e9;
}

.period-container p {
    margin-bottom: 15px;
    text-align: justify;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    color: #777;
    font-size: 0.9rem;
    margin-top: 40px;
    border-top: 1px solid #ddd;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.copyright {
    font-weight: bold;
    margin-bottom: 10px;
}

.sources {
    text-align: left;
}

.sources h4 {
    margin-bottom: 8px;
    color: #2c6e49;
}

.sources ul {
    list-style-type: disc;
    margin-left: 20px;
}

.sources li {
    margin-bottom: 5px;
    line-height: 1.4;
}

.disclaimers {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.disclaimer-box {
    background-color: #f8f8f8;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 15px;
    text-align: left;
}

.disclaimer-box h4 {
    margin-bottom: 8px;
    color: #2c6e49;
}

.disclaimer-box p {
    line-height: 1.5;
}

.footer-tagline {
    margin-top: 20px;
    font-style: italic;
}

/* Responsive adjustments for footer */
@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
    }
    
    .disclaimer-box {
        margin-bottom: 15px;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .visualization-container {
        flex-direction: column;
    }
    
    .graph-container {
        height: 350px;
    }
    
    .toggle-group {
        grid-template-columns: 1fr;
    }
    
    .period-btn {
        font-size: 0.9rem;
        padding: 8px 15px;
    }
    
    .period-content {
        flex-direction: column;
    }
    
    .period-image {
        order: -1;
    }
}