span.yesno {
    font-family:'Courier New', Courier, monospace;
    font-size: 120%;
}
span.yes {
    font-family:'Courier New', Courier, monospace;
    color: #14be10;
    font-size: 120%;
}
span.no {
    font-family:'Courier New', Courier, monospace;
    color: #ec3030;
    font-weight: bold;
    font-size: 120%;
}
input.mono {
    font-family: monospace;
}
table.quiz,
table.quiz-code,
table.quiz-select,
table.quiz tr,
table.quiz-code tr,
table.quiz-select tr,
table.quiz tr td,
table.quiz-code tr td,
table.quiz-select tr td {
    /* background-color: #fffdeb; */
    background-color: transparent;
    border: none;
}
table.quiz,
table.quiz-code,
table.quiz-select {
    /* background-color: #fffdeb; */
    background-color: transparent;
}
table.quiz tr,
table.quiz-code tr,
table.quiz-select tr {
    border: none;
}
table.quiz td,
table.quiz-code td,
table.quiz-select td {
    border: none;
    /* background-color: #fffdeb; */
    background-color: transparent;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    padding: 0.3em 1em 0.3em 1em;
}
table.quiz tr td code,
table.quiz-code tr td code,
table.quiz-select tr td code,
table.quiz tr td tt,
table.quiz-code tr td tt,
table.quiz-select tr td tt {
    /* background-color: #fffdeb !important; */
    background-color: transparent !important;
}
table.quiz tr td.code,
table.quiz-code tr td.code,
table.quiz-select tr td.code {
    font-family: monospace;
    font-size: 95%;
}
table.quiz tr td.comment,
table.quiz-code tr td.comment,
table.quiz-select tr td.comment {
    font-family: 'Times New Roman', Times, serif;
    font-style: italic;
}
table.quiz tr td.comment code,
table.quiz-code tr td.comment code,
table.quiz-select tr td.comment code {
    padding: 0;
}
table.quiz-code tr td {
    padding-top: 0.4em;
    padding-bottom: 0.4em;
}
table.quiz-code tr td input {
    border: 1px solid lightgray;
    text-align: center;
}
/* div.practice {
    background-color: #fffdeb;
    background-color: transparent;
} */

table.quiz-code.nocode td.code {
    font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol"
}

/* No zebra striping in quizzes (override the markdown-body default, which
   otherwise greys every other row — most visibly in dark mode). Declared
   before the row tints below so a checked row's tint still wins. */
table.quiz tr:nth-child(even),
table.quiz-code tr:nth-child(even),
table.quiz-select tr:nth-child(even),
html[data-theme-active="dark"] table.quiz tr:nth-child(even),
html[data-theme-active="dark"] table.quiz-code tr:nth-child(even),
html[data-theme-active="dark"] table.quiz-select tr:nth-child(even) {
    background-color: transparent;
}

/* After "Check the answers" is clicked, the yesno column shows each option's
   truth (green check = correct answer, red cross = false). These row tints
   show how the reader actually answered each row. The colour goes on the row
   itself (not the cells) so it fills the whole band evenly, even where a row
   has no comment cell. */
table.quiz tr.quiz-ok      { background-color: #e7f8e7; }  /* picked, and correct */
table.quiz tr.quiz-wrong   { background-color: #fce4e4; }  /* picked, but false   */
table.quiz tr.quiz-missed  { background-color: #fff3cd; }  /* correct, not picked */

html[data-theme-active="dark"] table.quiz tr.quiz-ok     { background-color: rgba(63, 185, 80, .20); }
html[data-theme-active="dark"] table.quiz tr.quiz-wrong  { background-color: rgba(248, 81, 73, .20); }
html[data-theme-active="dark"] table.quiz tr.quiz-missed { background-color: rgba(210, 153, 34, .22); }

/* Code answers blend into the row tint instead of sitting in a white box. */
html[data-theme-active="dark"] table.quiz td code,
html[data-theme-active="dark"] table.quiz-code td code,
html[data-theme-active="dark"] table.quiz-select td code {
    background: transparent;
}

div.extended-explanation {
    display: none;
}
div.comment {
    font-family: 'Times New Roman', Times, serif;
    font-style: italic;
}

/* ════════════════════════════════════════════════════════════════ */
/*  Modernised quiz controls                                          */
/* ════════════════════════════════════════════════════════════════ */

/* Custom rounded checkboxes (light style; dark-mode variant is further down). */
table.quiz input[type="checkbox"] {
    -webkit-appearance: none;
    appearance: none;
    width: 19px;
    height: 19px;
    margin: 0;
    vertical-align: middle;
    border: 2px solid #c3ccd5;
    border-radius: 6px;
    background: #fff;
    cursor: pointer;
    position: relative;
    transition: background-color .12s ease, border-color .12s ease;
}
table.quiz input[type="checkbox"]:hover { border-color: #0969da; }
table.quiz input[type="checkbox"]:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(9, 105, 218, .25);
}
table.quiz input[type="checkbox"]:checked {
    background: #0969da;
    border-color: #0969da;
}
table.quiz input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 1px;
    width: 5px;
    height: 10px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Fill-in text fields and dropdowns */
table.quiz-code tr td input,
table.quiz-select select {
    border: 1px solid #c3ccd5;
    border-radius: 7px;
    padding: 3px 8px;
    background: #fff;
    color: #1f2328;
    text-align: center;
    transition: border-color .12s ease, box-shadow .12s ease;
}
table.quiz-select select { text-align: left; cursor: pointer; }
table.quiz-code tr td input:focus,
table.quiz-select select:focus {
    outline: none;
    border-color: #0969da;
    box-shadow: 0 0 0 3px rgba(9, 105, 218, .15);
}

/* Buttons */
.quiz-actions { display: flex; flex-wrap: wrap; gap: 0.6em; }
.quiz-btn {
    font: inherit;
    font-size: 0.92em;
    font-weight: 600;
    padding: 0.55em 1.3em;
    border-radius: 9px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background-color .12s ease, border-color .12s ease, box-shadow .12s ease;
}
.quiz-btn-primary {
    background: #0969da;
    color: #fff;
    box-shadow: 0 1px 3px rgba(9, 105, 218, .25);
}
.quiz-btn-primary:hover { background: #0860c9; }
.quiz-btn-primary:active { background: #0a53b3; }
.quiz-btn-ghost {
    background: #fff;
    color: #0969da;
    border-color: #d8dee4;
}
.quiz-btn-ghost:hover { border-color: #0969da; background: #f6f8fa; }

/* Dark-mode buttons. */
html[data-theme-active="dark"] .quiz-btn-primary { background: #1f6feb; box-shadow: 0 1px 3px rgba(0, 0, 0, .4); }
html[data-theme-active="dark"] .quiz-btn-primary:hover { background: #388bfd; }
html[data-theme-active="dark"] .quiz-btn-ghost { background: transparent; color: #4493f8; border-color: #30363d; }
html[data-theme-active="dark"] .quiz-btn-ghost:hover { background: #161b22; border-color: #4493f8; }

/* Dark-mode variants for the controls (the quiz panel is now dark too). */
html[data-theme-active="dark"] table.quiz input[type="checkbox"] {
    background: #0d1117;
    border-color: #3d444d;
}
html[data-theme-active="dark"] table.quiz input[type="checkbox"]:hover { border-color: #1f6feb; }
html[data-theme-active="dark"] table.quiz input[type="checkbox"]:checked {
    background: #1f6feb;
    border-color: #1f6feb;
}
html[data-theme-active="dark"] table.quiz-code tr td input,
html[data-theme-active="dark"] table.quiz-select select {
    background: #0d1117;
    border-color: #3d444d;
    color: #e6edf3;
}
html[data-theme-active="dark"] table.quiz-code tr td input:focus,
html[data-theme-active="dark"] table.quiz-select select:focus {
    border-color: #1f6feb;
    box-shadow: 0 0 0 3px rgba(31, 111, 235, .25);
}