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

body {
    font-family: system-ui, -apple-system, sans-serif;
    background: #1a1a2e;
    color: #e2e8f0;
    overflow: hidden;
}

#map {
    position: absolute;
    inset: 0;
    background: #1a1a2e;
}

.leaflet-container { background: #1a1a2e; }
.leaflet-tile-pane { opacity: 1; }

#dataset-selector {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    background: rgba(26, 32, 44, 0.92);
    border: 1px solid #4a5568;
    border-radius: 6px;
    padding: 6px 14px;
    backdrop-filter: blur(8px);
}

#dataset-select {
    background: transparent;
    border: none;
    color: #e2e8f0;
    font-size: 0.85rem;
    outline: none;
    cursor: pointer;
}
#dataset-select option { background: #1a1a2e; }

#layer-panel {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 1000;
    background: rgba(26, 32, 44, 0.92);
    border: 1px solid #4a5568;
    border-radius: 8px;
    padding: 12px 16px;
    min-width: 200px;
    backdrop-filter: blur(8px);
}

.panel-title {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #a0aec0;
    margin-bottom: 8px;
    font-weight: 600;
}

.panel-divider {
    border-top: 1px solid #4a5568;
    margin: 10px 0;
}

.layer-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    margin-bottom: 6px;
    cursor: pointer;
}

.layer-toggle input { accent-color: var(--layer-color, #888); }

.layer-swatch {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    display: inline-block;
}

#gene-filter {
    width: 100%;
    background: #2d3748;
    border: 1px solid #4a5568;
    border-radius: 4px;
    padding: 4px 8px;
    color: #e2e8f0;
    font-size: 0.8rem;
    outline: none;
}
#gene-filter option { background: #2d3748; }

#info-panel {
    position: absolute;
    bottom: 12px;
    left: 12px;
    z-index: 1000;
    background: rgba(26, 32, 44, 0.92);
    border: 1px solid #4a5568;
    border-radius: 8px;
    padding: 10px 14px;
    min-width: 220px;
    /* Cap the panel so rich per-cell content (e.g. the wide-facet "markers (facet)"
       string, 50+ markers) can't stretch it across the whole viewport. */
    max-width: min(320px, calc(100vw - 24px));
    max-height: 45vh;
    overflow-y: auto;
    overflow-x: hidden;
    backdrop-filter: blur(8px);
}

.info-placeholder { color: #718096; font-size: 0.8rem; }

.info-row {
    font-size: 0.8rem;
    line-height: 1.6;
    overflow-wrap: anywhere;
}
.info-label { color: #a0aec0; }

.leaflet-control-zoom a {
    background: rgba(26, 32, 44, 0.92) !important;
    color: #e2e8f0 !important;
    border-color: #4a5568 !important;
}
.leaflet-control-zoom a:hover {
    background: #2d3748 !important;
}

.leaflet-control-scale-line {
    background: rgba(26, 32, 44, 0.8) !important;
    color: #a0aec0 !important;
    border-color: #a0aec0 !important;
}

#color-legend {
    margin-top: 8px;
    font-size: 0.75rem;
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 3px;
}
.legend-swatch {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.micron-scale-bar {
    background: rgba(26, 32, 44, 0.8);
    border-radius: 4px;
    padding: 4px 8px;
}

.loading-pill {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1200;                 /* above panels (1000), below nothing interactive */
    pointer-events: none;          /* non-blocking: never intercepts map interaction */
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(26, 32, 44, 0.92);
    border: 1px solid #4a5568;
    border-radius: 999px;
    padding: 6px 14px;
    font-size: 0.8rem;
    color: #e2e8f0;
    backdrop-filter: blur(8px);
}
.loading-pill[hidden] { display: none; }
.loading-pill__spinner {
    width: 12px; height: 12px; border-radius: 50%;
    border: 2px solid #4a5568; border-top-color: #63b3ed;
    animation: loading-pill-spin 0.8s linear infinite;
}
@keyframes loading-pill-spin { to { transform: rotate(360deg); } }