/* ==========================================================================
   Left Toolbar — Hover tooltip (custom, avoids native title tooltip)
   ========================================================================== */

.dt-tooltip {
    position: fixed;
    z-index: 9600;
    display: none;
    pointer-events: none;
    padding: 7px 10px;
    border-radius: 7px;
    background: rgba(30, 33, 48, 0.92);
    border: 1px solid rgba(58, 63, 85, 0.95);
    box-shadow: 0 6px 18px rgba(0,0,0,0.55);
    color: #d1d4dc;
    font: 12px -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    letter-spacing: 0.1px;
    white-space: nowrap;
    transform: translateY(-50%);
    opacity: 0;
    transition: opacity 0.08s ease;
    backdrop-filter: blur(4px);
}
.dt-tooltip.visible {
    display: block;
    opacity: 1;
}