:root {
  --bg: #f6f7f9; --card: #fff; --text: #1d2330; --muted: #667085; --line: #e3e6ec;
  --accent: #2f6fde; --accent-soft: #e8effc; --ok: #1f8a4c; --ok-soft: #e6f4ec;
  --warn: #b26b00; --warn-soft: #fdf3e2; --err: #c0362c; --err-soft: #fbeaea;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c; --card: #1d2128; --text: #e6e8ec; --muted: #9aa3b2; --line: #2e333c;
    --accent: #6b9bf2; --accent-soft: #23314b; --ok: #4cc27f; --ok-soft: #1b3326;
    --warn: #e0a64a; --warn-soft: #3a2f1c; --err: #ef7a71; --err-soft: #3d2222;
  }
}
* { box-sizing: border-box; }
/* l'attributo hidden deve vincere anche su elementi con display impostato (es. label.inline) */
[hidden] { display: none !important; }
body { margin: 0; font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.6rem; margin: .2rem 0 1rem; }
h2 { font-size: 1.2rem; margin: 1.6rem 0 .6rem; }
h3 { font-size: 1.05rem; margin: 1rem 0 .4rem; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }

.topbar { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1rem; padding: .6rem 1rem; background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.topbar .brand { font-weight: 700; color: var(--text); }
.topbar nav { display: flex; flex-wrap: wrap; gap: .2rem .9rem; flex: 1; }
.topbar nav a { color: var(--muted); }
.topbar nav a:hover { color: var(--text); }
.logout { display: flex; align-items: center; gap: .5rem; margin: 0; }
.who { color: var(--muted); font-size: .9rem; text-decoration: none; }
.who:hover { text-decoration: underline; }

.container { max-width: 1100px; margin: 0 auto; padding: 1.2rem 16px 4rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.2rem; margin-bottom: 1rem; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.row { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; }
.spacer { flex: 1; }
.stat { font-size: 2rem; font-weight: 700; }

.flash { padding: .7rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; background: var(--ok-soft); color: var(--ok); }
.flash.error { background: var(--err-soft); color: var(--err); }
.flash.warn { background: var(--warn-soft); color: var(--warn); }

label { display: block; font-weight: 600; font-size: .9rem; margin: .7rem 0 .25rem; }
label.inline { display: inline-flex; align-items: center; gap: .35rem; font-weight: 400; margin: 0 .8rem 0 0; }
input[type=text], input[type=password], input[type=number], input[type=datetime-local], select, textarea {
  width: 100%; padding: .5rem .6rem; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); font: inherit;
}
textarea { min-height: 5rem; resize: vertical; }
input[type=number] { max-width: 8rem; }
.fields { display: grid; gap: 0 1rem; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }

button, .btn { display: inline-block; padding: .5rem 1rem; border-radius: 8px; border: 1px solid var(--accent); background: var(--accent); color: #fff; font: inherit; cursor: pointer; }
button:hover, .btn:hover { filter: brightness(1.08); text-decoration: none; }
.btn-secondary { background: transparent; color: var(--accent); }
.btn-danger { background: transparent; border-color: var(--err); color: var(--err); }
.btn-small { padding: .2rem .6rem; font-size: .85rem; }
.btn-link { border: 0; background: none; color: var(--accent); padding: 0; }
button:disabled { opacity: .5; cursor: wait; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .5rem .4rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); }
.table-wrap { overflow-x: auto; }

.badge { display: inline-block; padding: .05rem .5rem; border-radius: 99px; font-size: .78rem; background: var(--accent-soft); color: var(--accent); white-space: nowrap; }
.badge.ok, .badge.published, .badge.approved { background: var(--ok-soft); color: var(--ok); }
.badge.warn, .badge.to_review, .badge.grading, .badge.draft { background: var(--warn-soft); color: var(--warn); }
.badge.err { background: var(--err-soft); color: var(--err); }
.badge.archived { background: var(--line); color: var(--muted); }

.qtext { font-size: 1.05rem; }
.opts { list-style: none; padding: 0; margin: .6rem 0 0; }
.opts li { margin: .3rem 0; }
.opt { display: flex; gap: .6rem; align-items: flex-start; padding: .55rem .7rem; border: 1px solid var(--line); border-radius: 8px; cursor: pointer; font-weight: 400; margin: 0; }
.opt:hover { border-color: var(--accent); }
.opt input { margin-top: .3rem; }
.opt.correct { border-color: var(--ok); background: var(--ok-soft); }
.opt.wrong { border-color: var(--err); background: var(--err-soft); }
.opt.missed { border-color: var(--warn); border-style: dashed; background: var(--warn-soft); }
.opt .why { display: block; margin-top: .25rem; font-size: .9rem; color: var(--muted); }
details.explanation { margin-top: .6rem; }
ol.chain { margin: 0; padding-left: 1.3rem; }
td.rate { white-space: nowrap; }
td.rate.readonly button { pointer-events: none; }
fieldset.plain { border: 0; margin: 0; padding: 0; min-width: 0; }
.badge.private { background: var(--warn-soft); color: var(--warn); }
td.row-actions { white-space: nowrap; }
.targets { display: flex; flex-wrap: wrap; gap: .2rem .8rem; align-items: center; margin: .4rem 0; }
.targets label.inline { margin: 0; }
td.row-actions .btn-link { display: block; margin-top: .3rem; font-size: .9rem; }
.btn-link.danger { color: var(--err); }
.diff-pick .dot { background: none; border: 0; padding: 0 .1rem; font-size: 1.1rem; line-height: 1; color: var(--line); cursor: pointer; }
.diff-pick .dot.on { color: var(--text); }
.calib { display: flex; flex-direction: column; gap: .2rem; margin-top: .35rem; }
.calib .chip { background: none; border: 1px solid var(--line); color: var(--muted); border-radius: 999px; padding: .05rem .5rem; font-size: .75rem; cursor: pointer; text-align: left; }
.calib .chip.on.easy, .calib .chip.on.hard { border-color: var(--warn); color: var(--warn); background: var(--warn-soft); }
.calib .chip.on.ok { border-color: var(--ok); color: var(--ok); background: var(--ok-soft); }
ol.chain li { margin: .15rem 0; }
.answer-box { min-height: 9rem; }
.answer-box.long { min-height: 22rem; }
.feedback { border-left: 3px solid var(--accent); padding: .4rem .8rem; background: var(--accent-soft); border-radius: 0 8px 8px 0; margin-top: .6rem; }
.qnum { color: var(--muted); font-size: .85rem; }

.timerbar { position: sticky; top: 3.1rem; z-index: 5; display: flex; align-items: center; gap: 1rem; padding: .6rem 1rem; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 1rem; }
.attempt-page .topbar { position: static; }
.attempt-page .timerbar { top: 0; }
.timer { font-size: 1.5rem; font-variant-numeric: tabular-nums; font-weight: 700; }
.timer.low { color: var(--err); }
.save-state { font-size: .85rem; color: var(--muted); }
.progress { flex: 1; height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; }
.progress > div { height: 100%; background: var(--accent); transition: width 1s linear; }

.grade { font-size: 3rem; font-weight: 800; }
.grade.good { color: var(--ok); } .grade.mid { color: var(--warn); } .grade.bad { color: var(--err); }

.opt-row { display: flex; gap: .5rem; align-items: center; margin: .3rem 0; }
.opt-row input[type=text] { flex: 1; }
.opt-row input.opt-why { flex: 1.2; font-size: .9rem; }
@media (max-width: 600px) { .opt-row { flex-wrap: wrap; } .opt-row input.opt-why { flex-basis: 100%; margin-left: 1.6rem; } }
.login { max-width: 360px; margin: 4rem auto; }
.spinner { display: none; }
form.loading .spinner { display: inline-block; }
details > summary { cursor: pointer; color: var(--accent); }
pre.code { background: var(--bg); border: 1px solid var(--line); padding: .8rem; border-radius: 8px; overflow-x: auto; font-size: .85rem; }

.langs { display: inline-flex; gap: .35rem; align-items: center; }
.lang { display: inline-flex; padding: 2px; border-radius: 4px; opacity: .55; border: 1px solid transparent; }
.lang:hover { opacity: 1; text-decoration: none; }
.lang.current { opacity: 1; border-color: var(--accent); }
.flag { width: 24px; height: 16px; object-fit: cover; border-radius: 2px; box-shadow: 0 0 0 1px var(--line); vertical-align: -3px; }
.flag-emoji { font-size: 1.1rem; line-height: 1; }
footer .flag { width: 18px; height: 12px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.topbar .langs { margin-left: auto; }

/* ---- grafici (palette categoriale validata per daltonismo, chiaro/scuro) */
:root {
  --series-1: #2a78d6; --series-2: #eb6834; --series-3: #1baf7a; --series-4: #eda100;
  --series-5: #e87ba4; --series-6: #008300; --series-7: #6250d6; --series-8: #e34948;
}
@media (prefers-color-scheme: dark) {
  :root {
    --series-1: #3987e5; --series-2: #d95926; --series-3: #199e70; --series-4: #c98500;
    --series-5: #d55181; --series-6: #008300; --series-7: #9085e9; --series-8: #e66767;
  }
}
.s1 { --c: var(--series-1); } .s2 { --c: var(--series-2); } .s3 { --c: var(--series-3); } .s4 { --c: var(--series-4); }
.s5 { --c: var(--series-5); } .s6 { --c: var(--series-6); } .s7 { --c: var(--series-7); } .s8 { --c: var(--series-8); }
svg.chart { width: 100%; height: auto; display: block; overflow: visible; }
svg.chart .grid { stroke: var(--line); stroke-width: 1; }
svg.chart .ref { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 4 4; }
svg.chart .tick { fill: var(--muted); font-size: 11px; }
svg.chart .line { fill: none; stroke: var(--c); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
svg.chart .dot { fill: var(--c); stroke: var(--card); stroke-width: 2; }
svg.chart .hit { fill: transparent; }
svg.chart .pt:hover .dot { r: 6.5; }
.legend { list-style: none; display: flex; flex-wrap: wrap; gap: .3rem 1rem; padding: 0; margin: .4rem 0 0; font-size: .9rem; color: var(--muted); }
.legend .key { display: inline-block; width: 12px; height: 12px; border-radius: 3px; background: var(--c); margin-right: .35rem; vertical-align: -1px; }
.bars { display: grid; gap: .45rem; }
.bar-row { display: grid; grid-template-columns: minmax(7rem, 14rem) 1fr 3.2rem; gap: .6rem; align-items: center; font-size: .92rem; }
.bar-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-track { position: relative; height: 12px; background: var(--line); border-radius: 4px; }
.bar { display: block; height: 100%; background: var(--c); border-radius: 4px; }
.bar-ref { position: absolute; top: -3px; bottom: -3px; border-left: 1px dashed var(--muted); }
.bar-value { text-align: right; font-variant-numeric: tabular-nums; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: .8rem; margin-bottom: 1rem; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: .7rem .9rem; }
.tile .v { font-size: 1.7rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.tile .l { color: var(--muted); font-size: .85rem; }
td.cell { text-align: center; font-variant-numeric: tabular-nums; }
@media (max-width: 600px) { .bar-row { grid-template-columns: 1fr 2.8rem; } .bar-row .bar-track { grid-column: 1 / -1; grid-row: 2; } }
svg.chart-narrow { display: none; }
@media (max-width: 600px) { svg.chart-wide { display: none; } svg.chart-narrow { display: block; } }
/* grafici delle domande (app/figures.py) */
figure.figure-box { margin: .6rem 0; max-width: 520px; }
figure.figure-box.small { max-width: 300px; margin: .3rem 0; }
figure.figure-box figcaption { font-size: .85rem; color: var(--muted); margin-bottom: .2rem; }
svg.fig { width: 100%; height: auto; display: block; background: var(--card); border: 1px solid var(--line); border-radius: 8px; }
svg.fig .g { stroke: var(--line); stroke-width: 1; }
svg.fig .ax, svg.fig .tk { stroke: var(--text); stroke-width: 1.2; }
svg.fig .arrow { fill: var(--text); }
svg.fig .tick { fill: var(--muted); font-size: 12px; }
svg.fig .axl { fill: var(--text); font-size: 12px; font-style: italic; }
svg.fig .curve { fill: none; stroke: var(--c); stroke-width: 2.2; stroke-linejoin: round; stroke-linecap: round; }
svg.fig .curve.dash { stroke-dasharray: 6 4; }
svg.fig .asy { stroke: var(--muted); stroke-width: 1.2; stroke-dasharray: 5 4; }
svg.fig .pt { fill: var(--text); stroke: var(--card); stroke-width: 1.5; }
svg.fig .pt.open { fill: var(--card); stroke: var(--text); }
svg.fig .pl, svg.fig .fl { font-size: 13px; fill: var(--text); }
svg.fig .fl { fill: var(--c); font-style: italic; font-weight: 600; }
svg.fig .barf, svg.fig .slice, svg.fig .dotf { fill: var(--c); }
svg.fig .barf.adj { stroke: var(--card); stroke-width: 1; }
svg.fig .slice { stroke: var(--card); stroke-width: 2; }
.opt .figure-box { margin-top: .3rem; }
.answer-photo img { max-width: 100%; max-height: 420px; border: 1px solid var(--line); border-radius: 8px; display: block; margin: .4rem 0; }
.photo-box { margin-top: .5rem; }
.photo-label { display: block; font-size: .95rem; }
.photo-label input[type=file] { display: block; margin-top: .3rem; max-width: 100%; }
.opt-row { flex-wrap: wrap; }
.opt-row .opt-fig { flex-basis: 100%; margin: 0 0 .3rem 1.6rem; }
.opt-row .opt-fig textarea, .fig-edit textarea { font-family: ui-monospace, monospace; font-size: .85rem; }
.fig-edit { margin: .5rem 0; }
.fig-preview:empty { display: none; }
.inline-form { display: inline-block; margin-left: .4rem; }
.nc-toggle { display: inline-flex; gap: .35rem; align-items: center; font-size: .85rem; color: var(--muted); margin: .2rem 0 .4rem; cursor: pointer; }
.q.not-covered .qtext, .q.not-covered .opts, .q.not-covered textarea, .q.not-covered .figure-box, .q.not-covered .photo-box { opacity: .4; }
.q.not-covered .nc-toggle { color: var(--warn); font-weight: 600; }
label.essay-choice { display: flex; gap: .8rem; align-items: flex-start; cursor: pointer; }
label.essay-choice input { margin-top: .3rem; }
label.essay-choice:has(input:checked) { outline: 2px solid var(--accent); }
label.essay-choice .qtext { display: block; margin-top: .3rem; }
table.users tr.inactive td { opacity: .55; }
ul.timeline { list-style: none; padding: 0; margin: 0; }
ul.timeline li { padding: .25rem 0; border-bottom: 1px solid var(--line); }
ul.timeline li:last-child { border-bottom: 0; }
.grade.frozen { color: var(--muted); text-decoration: line-through; text-decoration-thickness: 3px; }
.frozen-text { color: var(--muted); text-decoration: line-through; }
details.dispute { margin-top: .6rem; }
.dispute-box { border-left: 3px solid var(--warn); background: var(--warn-soft); padding: .6rem .8rem; border-radius: 6px; margin: .6rem 0; }
.dispute-box table { width: 100%; }

/* tour di benvenuto */
.tour-layer { position: fixed; inset: 0; z-index: 1000; pointer-events: none; }
.tour-layer.tour-dim { background: rgba(10, 14, 22, .45); pointer-events: auto; }
.tour-lit { position: relative; z-index: 999; border-radius: 6px; box-shadow: 0 0 0 4px var(--accent), 0 0 0 9999px rgba(10, 14, 22, .45); background: var(--card); }
.tour-box { position: fixed; z-index: 1001; pointer-events: auto; width: min(360px, calc(100vw - 24px)); background: var(--card); color: var(--text); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.1rem .8rem; box-shadow: 0 12px 32px rgba(0, 0, 0, .25); }
.tour-box.tour-center { top: 50%; left: 50%; transform: translate(-50%, -50%); }
.tour-box h3 { margin: .2rem 0 .4rem; }
.tour-box p { margin: 0 0 .8rem; }
.tour-actions { display: flex; align-items: center; gap: .5rem; }
.tour-actions .spacer { flex: 1; }
@media (max-width: 639px) {
  .tour-box, .tour-box.tour-center { top: auto; left: 12px; right: 12px; bottom: 12px; width: auto; transform: none; }
}

/* telefono: marchio, utente e lingue su una riga; il menu sotto, su una sola riga che scorre di lato */
@media (max-width: 720px) {
  .topbar { gap: .35rem .75rem; padding: .45rem .8rem .35rem; }
  .topbar .brand { font-size: .95rem; white-space: nowrap; }
  .topbar .logout { margin-left: auto; }
  .topbar .langs { margin-left: 0; }
  .topbar nav { order: 10; flex: 1 0 100%; flex-wrap: nowrap; gap: 1.1rem; overflow-x: auto; white-space: nowrap;
    scrollbar-width: none; -webkit-overflow-scrolling: touch; padding: .15rem 1.2rem .2rem 0; margin-right: -.8rem;
    -webkit-mask-image: linear-gradient(to right, #000 85%, transparent); mask-image: linear-gradient(to right, #000 85%, transparent); }
  .topbar nav::-webkit-scrollbar { display: none; }
}
.topbar nav a[aria-current="page"] { color: var(--text); font-weight: 600; }
.tour-lit-bar { box-shadow: inset 0 0 0 2px var(--accent); background: var(--accent-soft); border-radius: 6px; color: var(--text) !important; padding: 0 .3rem; margin: 0 -.3rem; }
body.tour-bar .topbar { z-index: 1000; }
body.tour-bar .tour-layer { z-index: 999; }

/* materie e argomenti per ciclo */
.subj-head { gap: .5rem; margin-bottom: .8rem; }
.subj-head input[type=search] { max-width: 16rem; padding: .35rem .6rem; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--text); font: inherit; }
.new-subject { position: relative; }
.new-subject > summary { list-style: none; }
.new-subject > summary::-webkit-details-marker { display: none; }
.new-subject > form { position: absolute; right: 0; top: 2.4rem; z-index: 5; min-width: 22rem; margin: 0; box-shadow: 0 8px 24px rgba(0,0,0,.15); }
.cycles { display: flex; gap: .4rem; flex-wrap: wrap; margin: .2rem 0 1rem; }
.cycles a { padding: .35rem .9rem; border-radius: 99px; border: 1px solid var(--line); color: var(--muted); background: var(--card); }
.cycles a.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.cycles .n { opacity: .75; font-size: .8rem; margin-left: .35rem; }
.pane-title { display: none; }
body.searching .pane-title { display: block; margin: 1.2rem 0 0; font-size: 1rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
body.searching .cycles a.on { background: var(--card); color: var(--muted); border-color: var(--line); }
.school { margin: 1.2rem 0 .5rem; display: flex; align-items: baseline; gap: .6rem; flex-wrap: wrap; }
.school h3 { margin: 0; font-size: 1.15rem; }
details.subj { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: .5rem; }
details.subj > summary { list-style: none; display: flex; align-items: center; flex-wrap: wrap; gap: .4rem .8rem; padding: .65rem 1rem; cursor: pointer; color: var(--text); }
details.subj > summary::-webkit-details-marker { display: none; }
details.subj > summary::before { content: "▸"; color: var(--muted); transition: transform .15s; }
details.subj[open] > summary::before { transform: rotate(90deg); }
details.subj > summary strong { font-size: 1.05rem; }
.subj .stats { color: var(--muted); font-size: .88rem; }
.warn-text { color: var(--warn); }
.danger-text { color: var(--err); }
.topics { border-top: 1px solid var(--line); padding: .2rem 1rem .8rem; }
.trow { display: grid; grid-template-columns: minmax(0, 1fr) auto auto auto; gap: .4rem .8rem; align-items: center; padding: .45rem 0; border-bottom: 1px solid var(--line); }
.trow .nm a { color: var(--text); }
.trow .chips { display: flex; gap: .3rem; flex-wrap: wrap; justify-content: flex-end; }
.trow.flash-row { background: var(--accent-soft); border-radius: 6px; }
.note { font-size: .8rem; color: var(--muted); }
.qn { color: var(--muted); font-size: .85rem; white-space: nowrap; min-width: 6.5rem; text-align: right; }
.qn.zero { color: var(--warn); }
.acts { display: flex; gap: .3rem; align-items: center; }
.acts form { margin: 0; }
.ic { display: inline-block; border: 1px solid var(--line); background: none; color: var(--accent); padding: .15rem .5rem; border-radius: 6px; font-size: .85rem; cursor: pointer; line-height: 1.4; }
.ic.del { color: var(--err); }
.addrow { display: flex; gap: .5rem; margin-top: .7rem; flex-wrap: wrap; align-items: center; }
.addrow input[name=name] { max-width: 20rem; }
.addrow input.classes { max-width: 9rem; }
.dropdown { position: relative; }
.dropdown > summary { list-style: none; }
.dropdown > summary::-webkit-details-marker { display: none; }
.dropdown-menu { position: absolute; right: 0; top: 1.9rem; z-index: 6; background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: .4rem .7rem; box-shadow: 0 8px 24px rgba(0,0,0,.15); display: grid; gap: .35rem; white-space: nowrap; }
.dropdown-menu form { margin: 0; }
#topic-dialog { max-width: 36rem; width: calc(100vw - 2rem); border: 1px solid var(--line); color: var(--text); }
#topic-dialog::backdrop { background: rgba(10, 14, 22, .45); }
@media (max-width: 720px) {
  .trow { grid-template-columns: minmax(0, 1fr) auto; }
  .trow .chips { grid-column: 1 / -1; justify-content: flex-start; order: 3; }
  .trow .acts { grid-column: 1 / -1; order: 4; flex-wrap: wrap; }
  .qn { text-align: right; min-width: 0; }
  .new-subject > form { min-width: 0; width: calc(100vw - 2rem); }
}

/* scacchi: scacchiera e icone dei pezzi nella notazione */
.figure-box.board { max-width: 400px; }
.figure-box.board.small { max-width: 260px; }
.chessboard svg { width: 100%; height: auto; display: block; border-radius: 6px; }
.chessboard .turn { display: flex; align-items: center; gap: .4rem; font-size: .88rem; color: var(--muted); margin-top: .35rem; }
.chessboard .turn i { width: .85rem; height: .85rem; border-radius: 50%; border: 1px solid #888; display: inline-block; background: #fff; }
.chessboard.turn-black .turn i { background: #222; }
.piece { display: inline-block; white-space: nowrap; }
.piece svg.pc { width: 1.2em; height: 1.2em; vertical-align: -.25em; margin-right: -.05em; }

/* immagini delle domande e delle opzioni */
.qimage { margin: .2rem 0 .6rem; }
.qimage img { max-width: 100%; max-height: 360px; border-radius: 8px; border: 1px solid var(--line); display: block; }
.qimage.small { display: inline-block; margin: .2rem .4rem .2rem 0; vertical-align: middle; }
.qimage.small img { max-height: 120px; }
.img-thumb { max-height: 90px; max-width: 160px; border-radius: 6px; border: 1px solid var(--line); vertical-align: middle; }
.img-thumb.small { max-height: 48px; max-width: 80px; }

/* ambiente demo */
.demo-banner { background: var(--warn-soft); color: var(--warn); text-align: center; font-size: .85rem; padding: .35rem 1rem; }
.feedback-btn { position: fixed; right: 1rem; bottom: 1rem; z-index: 50; border-radius: 999px; box-shadow: 0 2px 10px rgba(0,0,0,.2); }
#feedback-dialog { max-width: 34rem; width: calc(100% - 2rem); }
#feedback-dialog textarea { width: 100%; }
@media print { .feedback-btn { display: none; } }