textarea{display:block;width:100%;margin-top:6px;padding:10px 12px;background:var(--panel2);border:1px solid var(--line);border-radius:7px;color:var(--text);font:15px/1.5 Inter,system-ui,sans-serif;resize:vertical}
textarea:focus{outline:none;border-color:var(--gold)}
textarea.code{font:13px/1.7 "JetBrains Mono",monospace}
input[type=checkbox],input[type=radio]{display:inline-block;flex:none;width:18px;height:18px;margin:0;padding:0;accent-color:var(--gold)}
label.check,label.choice{display:flex;align-items:center;gap:10px;color:var(--text);font-size:15px}
label.choice{margin:0;padding:12px 14px;border:1px solid var(--line);border-radius:8px;background:var(--panel2);cursor:pointer}
label.choice + label.choice{margin-top:8px}
label.choice:hover{border-color:var(--gold)}
.inline-form{display:inline;margin:0}
.actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.actions .btn{margin-top:0}
.link.danger{color:var(--red)}
.btn.danger{background:transparent;border-color:var(--red);color:var(--red)}
.btn.danger:hover{background:var(--red);color:#fff}
.help{margin-top:10px;padding:14px 16px;border:1px dashed var(--line);border-radius:8px;color:var(--mute);font-size:14px}
.help dt{color:var(--gold);font-weight:600;margin-top:8px}
.help dt:first-child{margin-top:0}
.help dd{margin:2px 0 0}
.progress{height:6px;background:var(--panel2);border-radius:99px;overflow:hidden;margin-bottom:8px}
.progress span{display:block;height:100%;background:var(--gold)}
.prose{white-space:pre-wrap;line-height:1.7;max-width:75ch}
video{display:block;width:100%;max-width:860px;margin-top:16px;border-radius:8px;background:#000}
fieldset.question{min-width:0;margin:0 0 18px;padding:18px;border:1px solid var(--line);border-radius:10px}
fieldset.question legend{padding:0 8px;font-size:16px;font-weight:600}
.qnum{color:var(--gold);font-family:"JetBrains Mono",monospace;margin-right:6px}
.hint{margin:0 0 10px;color:var(--mute);font-size:14px}
.match{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:center;padding:8px 0;border-bottom:1px solid var(--line)}
.match:last-child{border-bottom:0}
.match select{margin-top:0}
.order{display:grid;grid-template-columns:90px 1fr;gap:12px;align-items:center;padding:8px 0}
.order select{margin-top:0}
.score{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;padding:18px 20px;margin-bottom:18px;border:1px solid var(--line);border-radius:10px}
.score b{font:600 34px "JetBrains Mono",monospace}
.score.pass{border-color:var(--green)}
.score.pass b{color:var(--green)}
.score.fail{border-color:var(--red)}
.score.fail b{color:var(--red)}
.review{padding:14px 16px;margin-bottom:12px;border:1px solid var(--line);border-left-width:4px;border-radius:8px}
.review.right{border-left-color:var(--green)}
.review.wrong{border-left-color:var(--red)}
.review p{margin:6px 0}
.review .qtext{font-weight:600}
.explain{color:var(--mute);font-style:italic}
.steps{display:flex;justify-content:space-between;gap:12px}
.steps .btn{margin-top:0}
@media(max-width:760px){.match,.order{grid-template-columns:1fr}}
:root{color-scheme:dark}
.prose.rich{white-space:normal}
.rich p{margin:0 0 14px}
.rich h3,.rich h4,.rich h5{margin:22px 0 10px;color:var(--gold);font-family:Cinzel,serif;letter-spacing:.03em}
.rich h3{font-size:20px}
.rich h4{font-size:17px}
.rich h5{font-size:15px}
.rich ul,.rich ol{margin:0 0 14px;padding-left:24px}
.rich li{margin-bottom:6px}
.rich img,.resources img{display:block;max-width:100%;height:auto;margin:14px 0;border-radius:8px;border:1px solid var(--line)}
.resources{margin-top:18px}
.resources figure{margin:0}
.resources h3{margin:18px 0 8px;font-size:16px;color:var(--gold)}
.resources ul{margin:0;padding-left:20px}
.dnd-bank{display:flex;flex-wrap:wrap;gap:10px;min-height:54px;padding:12px;margin-bottom:12px;border:1px dashed var(--line);border-radius:8px;background:var(--panel2)}
.dnd-chip{padding:9px 14px;border:1px solid var(--gold);border-radius:8px;background:var(--panel);color:var(--text);font:14px Inter,system-ui,sans-serif;text-align:left;cursor:grab}
.dnd-chip:hover,.dnd-chip.on{background:var(--gold);color:#0B0B0B}
.dnd-chip:focus-visible,.dnd-slot:focus-visible{outline:2px solid var(--gold2);outline-offset:2px}
.dnd-slot{display:flex;align-items:center;min-height:46px;padding:5px;border:1px dashed var(--line);border-radius:8px}
.dnd-slot.filled{border-style:solid;border-color:var(--gold)}
.dnd-slot.missing{border-color:var(--red)}
.dnd-slot .dnd-chip{width:100%;cursor:pointer}
.qprompt{margin:0 0 14px;font-size:16px;font-weight:600}
.qprompt p{margin:0 0 10px}
.qprompt img{max-height:360px;width:auto}

/* opt-letter: lettered badges on answer options */
@supports selector(:has(*)) {
  fieldset.question{counter-reset:opt}
  label.choice{position:relative;counter-increment:opt;padding:10px 14px;gap:14px}
  label.choice input{position:absolute;opacity:0;width:1px;height:1px;margin:0}
  label.choice::before{content:counter(opt, upper-alpha);display:grid;place-items:center;flex:none;width:38px;height:38px;border-radius:50%;background:#2F7BFF;color:#fff;font:600 18px Inter,system-ui,sans-serif}
  label.choice:has(input:checked){border-color:#3FB950;background:rgba(63,185,80,.10)}
  label.choice:has(input:checked)::before{content:"\2713";background:#3FB950;font-size:20px}
  label.choice:has(input:focus-visible){outline:2px solid var(--gold2);outline-offset:2px}
}

/* Add lesson menu on the course page */
.addmenu summary{list-style:none;cursor:pointer;display:inline-block}
.addmenu summary::-webkit-details-marker{display:none}
.addmenu summary::after{content:" \25BE"}
.addmenu-list{margin-top:8px;min-width:280px;background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:6px}
.addmenu-list a{display:block;padding:9px 12px;border-radius:6px;color:var(--text)}
.addmenu-list a:hover,.addmenu-list a:focus{background:var(--panel);color:var(--gold)}
.addmenu-list a span{display:block;color:var(--mute);font-size:13px;font-weight:400}