/* Tufte-style sidenotes and margin notes */

/* Counter for sidenote numbering - reset per article */
#content, article {
    counter-reset: sidenote-counter;
}

/* Hide the checkbox toggle */
input.margin-toggle {
    display: none;
}

/* Sidenote number (superscript) */
.sidenote-number {
    counter-increment: sidenote-counter;
}

.sidenote-number::after {
    content: counter(sidenote-counter);
    font-size: 0.7em;
    position: relative;
    top: -0.4em;
    vertical-align: baseline;
    color: #339;
    padding: 0 0.08em;
    border-radius: 0.1em;
}

/* Both sidenotes and margin notes */
.sidenote,
.marginnote {
    float: right;
    clear: right;
    margin-right: -17em;
    width: 14em;
    font-size: 0.85em;
    line-height: 1.4;
    vertical-align: baseline;
    position: relative;
    text-align: left;
    color: #555;
}

/* Sidenote number prefix in the note itself */
.sidenote::before {
    content: counter(sidenote-counter) ".";
    color: #339;
    padding: 0 0.08em;
    border-radius: 0.1em;
    margin-right: 0.3em;
}

/* Hover highlight for sidenotes */
.sidenote-group:hover .sidenote-number::after,
.sidenote-group:hover .sidenote::before {
    color: #fff;
    background-color: #339;
}
.sidenote-group:hover .sidenote {
    color: #333;
}

/* Hover highlight for margin notes */
.marginnote-group:hover > label {
    color: #33f;
}
.marginnote-group:hover .marginnote {
    color: #333;
}

/* Margin note toggle indicator (circled plus) - hidden on wide screens */
label.margin-toggle:not(.sidenote-number) {
    display: none;
}

/* Mobile/narrow screen styles */
@media (max-width: 900px) {
    /* Show the toggle indicator for margin notes */
    label.margin-toggle:not(.sidenote-number) {
        display: inline;
        cursor: pointer;
        color: #339;
    }

    /* Make sidenote numbers clickable */
    .sidenote-number {
        cursor: pointer;
    }

    /* Hide notes by default on narrow screens */
    .sidenote,
    .marginnote {
        display: none;
    }

    /* Show notes when checkbox is checked */
    .margin-toggle:checked + .sidenote,
    .margin-toggle:checked + .marginnote {
        display: block;
        float: none;
        clear: both;
        width: 95%;
        margin: 1em 2.5%;
        padding: 0.5em 1em;
        background-color: #fafaff;
        border-left: 3px solid #ddd;
    }
}