#heatmap-tab-content {
        position: relative;
        min-height: 600px;
    }
    #heatmap-wrapper {
        width: 100%;
    }
    #heatmap-controls {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 10px;
        background-color: var(--bg-light-alt);
        padding: var(--space-2-5);
        border-radius: var(--radius-md);
        border: 1px solid var(--border-light);
    }
    #heatmap-legend-text {
        font-size: 0.9em;
        color: var(--text-tertiary);
    }
    #yearly-heatmap-plot {
        width: 100%;
        min-height: 600px;
    }

    /* Fixed Loader Styling with Progress Bar */
    #heatmap-loading {
        display: none;
        position: absolute;
        top: 150px;
        left: 50%;
        transform: translateX(-50%);
        background: rgba(255,255,255,0.95);
        padding: 20px 40px;
        border-radius: var(--radius-xl);
        box-shadow: var(--shadow-lg);
        z-index: var(--z-dropdown);
        text-align: center;
        color: var(--primary-dark);
        font-weight: var(--font-weight-bold);
        border: 1px solid var(--border-medium);
        min-width: 300px;
    }