/* Interactive Legend Filter - vis-network MicroSim
 * ================================================
 * Full-width network canvas with an absolute-positioned, clickable legend
 * panel on the right. The legend is a FUNCTIONAL filter, not a caption:
 * clicking a row hides that taxonomy category in the DataSet.
 * Overlays are siblings of #network because vis-network erases the canvas
 * innerHTML. Total height is 560px, matching CANVAS_HEIGHT in the JS.
 */

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

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: aliceblue;
}

/* ===========================================
   CONTAINER & NETWORK CANVAS
   =========================================== */
.container {
    position: relative;
    width: 100%;
    height: 560px;
}

#network {
    width: 100%;
    height: 100%;
    background-color: aliceblue;
}

/* ===========================================
   TITLE (Top Center)
   =========================================== */
.title {
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 18px;
    font-weight: bold;
    color: black;
    background-color: rgba(240, 248, 255, 0.85);
    padding: 2px 12px;
    border-radius: 6px;
    white-space: nowrap;
    z-index: 10;
}

/* ===========================================
   LEGEND PANEL (Right sidebar, clickable filter)
   =========================================== */
.legend-panel {
    position: absolute;
    top: 44px;
    right: 8px;
    width: 240px;
    background-color: rgba(255, 255, 255, 0.97);
    border: 2px solid #90caf9;
    border-radius: 8px;
    padding: 10px 12px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    z-index: 10;
}

.legend-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 4px;
}

.legend-heading {
    font-weight: bold;
    font-size: 14px;
    color: #1976d2;
}

.show-all {
    font-size: 12px;
    font-weight: bold;
    color: #2196f3;
    text-decoration: none;
    cursor: pointer;
}

.show-all:hover {
    text-decoration: underline;
}

.legend-hint {
    font-size: 11px;
    color: #666;
    line-height: 1.4;
    margin-bottom: 8px;
}

.legend-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

/* A single clickable legend row. */
.legend-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    border-radius: 6px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background-color 0.15s, border-color 0.15s;
    user-select: none;
}

.legend-row:hover {
    background-color: #f0f6ff;
    border-color: #bbdefb;
}

/* When a category is toggled OFF, dim the whole row. */
.legend-row.off {
    opacity: 0.55;
}

.legend-swatch {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    flex-shrink: 0;
    border: 2px solid rgba(0, 0, 0, 0.25);
}

/* Off state: swatch shown at reduced opacity per spec. */
.legend-row.off .legend-swatch {
    opacity: 0.35;
}

.legend-label {
    flex: 1;
    font-size: 12px;
    font-weight: bold;
    color: #222;
}

.legend-row.off .legend-label {
    color: #888;
    font-weight: normal;
}

/* Live count badge, e.g. "Graph Theory (6)". */
.legend-count {
    font-size: 11px;
    font-weight: bold;
    color: #333;
    background-color: #e8eef5;
    border-radius: 10px;
    padding: 2px 8px;
    min-width: 26px;
    text-align: center;
}

/* Off state: gray out the count badge per spec. */
.legend-row.off .legend-count {
    color: #aaa;
    background-color: #eee;
}

.legend-total {
    margin-top: 10px;
    padding-top: 8px;
    border-top: 1px solid #e0e0e0;
    font-size: 11px;
    font-weight: bold;
    color: #555;
    text-align: center;
}

/* ===========================================
   RESPONSIVE STYLES
   =========================================== */
@media (max-width: 640px) {
    .title {
        font-size: 14px;
        top: 6px;
    }

    .legend-panel {
        top: 72px;
        width: 200px;
        padding: 8px 10px;
    }

    .legend-label {
        font-size: 11px;
    }
}