/* Evolution Timeline MicroSim Styles */

body {
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
    background-color: aliceblue;
    color: #333;
}

/* Header */
.header {
    background: linear-gradient(135deg, #2d5016, #4a7c2e);
    color: white;
    padding: 12px 20px;
    text-align: center;
}
.header h1 {
    margin: 0;
    font-size: 1.3em;
}
.header p {
    margin: 4px 0 0 0;
    font-size: 0.85em;
    opacity: 0.9;
}

/* Filter controls */
.controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    background: #f0f5eb;
    border-bottom: 1px solid #ccc;
}
.filter-btn {
    padding: 6px 14px;
    border: 2px solid #999;
    border-radius: 20px;
    background: white;
    cursor: pointer;
    font-size: 0.82em;
    font-weight: 600;
    transition: all 0.2s;
}
.filter-btn:hover { opacity: 0.85; }
.filter-btn.active { box-shadow: 0 0 0 2px #333; }
.filter-btn[data-category="all"] { border-color: #555; color: white; background: #555; }
.filter-btn[data-category="Pre-Darwin"] { border-color: #7f8c8d; color: white; background: #7f8c8d; }
.filter-btn[data-category="Darwin Era"] { border-color: #27ae60; color: white; background: #27ae60; }
.filter-btn[data-category="Modern Synthesis"] { border-color: #2980b9; color: white; background: #2980b9; }
.filter-btn[data-category="Molecular Era"] { border-color: #8e44ad; color: white; background: #8e44ad; }

/* Navigation buttons */
.nav-controls {
    display: flex;
    justify-content: center;
    gap: 6px;
    padding: 6px 16px;
    background: #f0f5eb;
}
.nav-btn {
    padding: 4px 12px;
    border: 1px solid #aaa;
    border-radius: 4px;
    background: white;
    cursor: pointer;
    font-size: 0.8em;
    transition: background 0.2s;
}
.nav-btn:hover { background: #e8e8e8; }

/* Timeline Container */
#timeline {
    padding-left: 80px;
    padding-right: 80px;
    overflow: hidden;
}

/* Override vis-timeline clipping */
.vis-timeline {
    overflow: visible !important;
    border: none !important;
}
.vis-panel.vis-center {
    overflow: visible !important;
}
.vis-item .vis-item-overflow {
    overflow: visible !important;
}

/* Ensure all item boxes fit their text */
.vis-item .vis-item-content {
    white-space: nowrap !important;
    padding: 4px 8px !important;
}
.vis-item.vis-range {
    min-width: fit-content !important;
}
.vis-item.vis-box {
    min-width: fit-content !important;
}

/* Tooltip styling */
.vis-tooltip {
    background: #2c3e50 !important;
    color: white !important;
    padding: 10px 15px !important;
    border-radius: 8px !important;
    font-size: 13px !important;
    max-width: 300px !important;
    line-height: 1.4 !important;
    word-wrap: break-word !important;
    overflow-wrap: break-word !important;
    white-space: normal !important;
    box-sizing: border-box !important;
}
.vis-tooltip div {
    max-width: 280px !important;
    word-wrap: break-word !important;
    overflow-wrap: break-word !important;
    white-space: normal !important;
}

/* Info panel */
.info-panel {
    padding: 12px 20px;
    min-height: 60px;
}

/* Legend */
.legend {
    padding: 8px 12px;
    background: white;
    border-radius: 8px;
    border: 1px solid #ddd;
}
.legend h3 {
    margin: 0 0 8px 0;
    font-size: 0.85em;
    color: #555;
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
    font-size: 0.8em;
}
.legend-color {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    flex-shrink: 0;
}

/* Event detail card */
.event-detail {
    background: white;
    border-radius: 8px;
    border: 1px solid #ddd;
    padding: 12px 16px;
    display: none;
}
.event-detail.visible { display: block; }
.event-detail h3 {
    margin: 0 0 6px 0;
    font-size: 1em;
    color: #2d5016;
}
.event-detail .era-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.75em;
    font-weight: 600;
    color: white;
    margin-bottom: 8px;
}
.event-detail .description {
    font-size: 0.88em;
    line-height: 1.55;
    color: #444;
}
.event-detail .context {
    margin-top: 8px;
    padding: 8px 12px;
    background: #fef9e7;
    border-left: 3px solid #f39c12;
    border-radius: 0 6px 6px 0;
    font-size: 0.82em;
    line-height: 1.45;
    color: #7d6608;
}
.event-detail .context strong {
    color: #b7950b;
}

/* Placeholder text */
.event-placeholder {
    color: #888;
    font-size: 0.88em;
    font-style: italic;
    padding: 16px 0;
}

/* Instructions */
.instructions {
    text-align: center;
    font-size: 0.78em;
    color: #777;
    padding: 4px 16px 0 16px;
}

/* Responsive */
@media (max-width: 700px) {
    .info-panel {
        grid-template-columns: 1fr;
    }
    #timeline {
        padding-left: 20px;
        padding-right: 20px;
    }
    .header h1 { font-size: 1.1em; }
}