/* help icon */
#help-icon-button {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 34px;
    height: 34px;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 50%;
    background: rgba(16, 16, 16, 0.75);
    color: #f7f7f7;
    font-size: 20px;
    font-weight: 700;
    cursor: pointer;
    z-index: 20;
    line-height: 1;
}

#help-icon-button:hover {
    background: rgba(0, 122, 204, 0.8);
    border-color: rgba(0, 212, 255, 0.9);
}

#help-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 2000;
}

#help-overlay[hidden] {
    display: none;
}

#help-panel {
    width: min(720px, 100%);
    max-height: min(80vh, 640px);
    overflow: auto;
    padding: 22px 24px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 12px;
    background: rgba(20, 20, 20, 0.96);
    color: #f4f4f4;
    font-size: 15px;
    line-height: 1.6;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}


#point-tooltip {
    position: fixed;
    z-index: 2500;
    pointer-events: none;
    padding: 6px 10px;
    border-radius: 6px;
    background: rgba(15, 15, 15, 0.92);
    color: #ffffff;
    border: 1px solid rgba(94, 203, 255, 0.4);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
    font-size: 12px;
    line-height: 1.35;
    white-space: nowrap;
    transform: translate(0, 0);
}

#point-tooltip[hidden] {
    display: none;
}
#help-panel h2 {
    font-size: 22px;
    margin: 0 0 12px 0;
    color: #ffffff;
}

#help-panel p {
    margin: 0;
}

#help-panel a {
    color: #5ecbff;
    text-decoration: underline;
}

#help-panel a:hover {
    color: #8edcff;
}
/* end  */