/* Variables */
:root {
    --primary-color: #e60000;
    --secondary-color: #000000;
    --background-color: #ffffff;
    --text-color: #000000;
    --border-color: #e0e0e0;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition-speed: 0.3s;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* Header */
header {
    background-color: var(--secondary-color);
    color: var(--background-color);
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

header h1 {
    margin-bottom: 0.75rem;
    font-size: 2.5rem;
}

.year-filter {
    margin-top: 0.75rem;
}

select {
    padding: 0.5rem 1rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    font-size: 1rem;
    cursor: pointer;
}

/* Main content */
main {
    max-width: 1200px;
    margin: 1.5rem auto;
    padding: 0 0.75rem;
}

/* Stat cards */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(500px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--background-color);
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    height: 100%;
}

.stat-card h2 {
    background-color: var(--primary-color);
    color: var(--background-color);
    padding: 0.75rem;
    font-size: 1.5rem;
}

.view-toggle {
    display: flex;
    padding: 0.5rem;
    background-color: #f5f5f5;
    border-bottom: 1px solid var(--border-color);
}

.toggle-btn {
    background: none;
    border: none;
    padding: 0.4rem 1rem;
    margin-right: 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.2s;
}

.toggle-btn:hover {
    background-color: rgba(230, 0, 0, 0.1);
}

.toggle-btn.active {
    background-color: var(--primary-color);
    color: white;
}

.stat-content, .chart-container, .table-container {
    padding: 1rem;
    min-height: 300px;
}

.chart-container, .table-container {
    display: none;
}

.chart-container.active-view, .table-container.active-view {
    display: block;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th, .data-table td {
    padding: 0.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background-color: #f5f5f5;
    font-weight: bold;
}

.data-table tr:hover {
    background-color: rgba(230, 0, 0, 0.05);
}

/* Data browser */
.data-browser {
    background-color: var(--background-color);
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    margin-bottom: 2rem;
}

.data-browser h2 {
    background-color: var(--primary-color);
    color: var(--background-color);
    padding: 0.75rem;
    font-size: 1.5rem;
}

.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    background: none;
    border: none;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color var(--transition-speed);
}

.tab-btn:hover {
    background-color: rgba(230, 0, 0, 0.1);
}

.tab-btn.active {
    border-bottom: 3px solid var(--primary-color);
    font-weight: bold;
}

.tab-content {
    padding: 1rem;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

input[type="text"] {
    width: 100%;
    padding: 0.6rem;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
}

.data-list {
    max-height: 500px;
    overflow-y: auto;
}

.data-item {
    padding: 0.6rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
}

.data-item:hover {
    background-color: rgba(230, 0, 0, 0.05);
}

/* Timeline chart */
.chart-description {
    text-align: center;
    font-style: italic;
    color: #666;
    margin-top: 10px;
}

#artists-timeline-chart {
    height: 500px;
    width: 100%;
    margin-bottom: 20px;
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: var(--background-color);
    text-align: center;
    padding: 1.5rem;
    margin-top: 2rem;
}

footer a {
    color: var(--background-color);
    text-decoration: underline;
}

footer a:hover {
    color: var(--primary-color);
}

/* Full-width stat card */
.stat-card.full-width {
    grid-column: 1 / -1;  /* Make the card span all columns */
    width: 100%;
}

.full-width .chart-container {
    height: 600px;  /* Increase height for better visibility */
}

/* Responsive design */
@media (max-width: 768px) {
    .stats-container {
        grid-template-columns: 1fr;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .tab-btn {
        padding: 0.75rem 1rem;
    }
}