/* Aula online: sistema grafico */
:root {
  --teal: #028090; --teal-dark: #0B5E66; --teal-soft: #E6F4F5; --orange: #F2994A; --orange-soft: #FDF1E6;
  --ink: #0F172A; --ink-2: #475569; --ink-3: #94A3B8; --line: #E2E8F0; --bg: #F5F7FA; --card: #FFFFFF;
  --green: #16A34A; --green-soft: #ECFDF3; --red: #DC2626; --red-soft: #FEF2F2; --amber: #D97706; --amber-soft: #FFFBEB;
  --radius: 18px; --shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 8px 24px rgba(15, 23, 42, .06);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--ink); line-height: 1.45; }
[hidden] { display: none !important; }
button { font-family: inherit; }
svg.i { width: 20px; height: 20px; flex: none; }
pre { white-space: pre-wrap; font-family: inherit; margin: 0; }

/* barra alta */
.top { position: sticky; top: 0; z-index: 10; background: rgba(255, 255, 255, .9); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top-in { max-width: 1240px; margin: 0 auto; padding: 10px 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: -.01em; }
.brand .mark { width: 30px; height: 30px; border-radius: 9px; background: linear-gradient(135deg, var(--teal), var(--teal-dark)); display: grid; place-items: center; color: #fff; }
.brand .mark svg { width: 18px; height: 18px; }
.chip { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 7px 12px 7px 9px; font-size: 14px; font-weight: 500; color: var(--ink); cursor: pointer; }
.chip svg { width: 18px; height: 18px; color: var(--teal); }

/* contenitori */
.wrap { max-width: 1240px; margin: 0 auto; padding: 18px 16px 48px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; }
.card + .card, section + section { margin-top: 16px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.card h2 { font-size: 20px; margin: 0 0 6px; letter-spacing: -.01em; }
.card h3 { font-size: 15px; margin: 0; color: var(--ink-2); font-weight: 600; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--teal); margin-bottom: 8px; }
.eyebrow.orange { color: var(--orange); }
.lead { font-size: 17px; color: var(--ink); margin: 0 0 14px; }
.muted { color: var(--ink-2); font-size: 14px; }
.small { font-size: 13px; color: var(--ink-3); }

/* pulsanti */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 12px; padding: 11px 16px; font-size: 15px; font-weight: 600; cursor: pointer; transition: transform .08s ease, background .15s ease, box-shadow .15s ease; }
.btn:hover { background: #F8FAFC; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .4; cursor: default; transform: none; }
.btn.primary { background: var(--teal); border-color: var(--teal); color: #fff; }
.btn.primary:hover { background: var(--teal-dark); }
.btn.accent { background: var(--orange); border-color: var(--orange); color: #fff; }
.btn.ghost { border-color: transparent; background: transparent; color: var(--teal); }
.btn.block { width: 100%; padding: 14px 16px; font-size: 16px; }
.btn.sm { padding: 8px 12px; font-size: 14px; border-radius: 10px; }
.btn svg { width: 18px; height: 18px; }

/* layout slide */
.layout { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 960px) { .layout { grid-template-columns: minmax(0, 1.7fr) minmax(300px, .8fr); align-items: start; } }
.slide-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.pill { display: inline-flex; align-items: center; gap: 8px; background: var(--teal-soft); color: var(--teal-dark); border-radius: 999px; padding: 6px 12px; font-size: 13px; font-weight: 600; }
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 4px rgba(2, 128, 144, .15); }
.pill.back { background: var(--amber-soft); color: var(--amber); }
.pill.back .dot { background: var(--amber); box-shadow: 0 0 0 4px rgba(217, 119, 6, .15); }
.slide-frame { margin: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; aspect-ratio: 16 / 9; }
.slide-frame img { width: 100%; height: 100%; object-fit: contain; display: block; transition: opacity .25s ease; }
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.toolbar .btn { flex: 1 1 auto; }
@media (min-width: 960px) { .toolbar .btn { flex: 0 0 auto; } }
.testo-box pre { font-size: 15px; line-height: 1.55; color: var(--ink); max-height: 420px; overflow: auto; }
.progress { height: 6px; background: var(--line); border-radius: 999px; overflow: hidden; margin-top: 12px; }
.progress span { display: block; height: 100%; background: var(--teal); border-radius: 999px; transition: width .4s ease; }

/* opzioni (sondaggi e test) */
.opz { display: flex; align-items: center; gap: 14px; width: 100%; text-align: left; background: #fff; border: 1.5px solid var(--line); border-radius: 14px; padding: 14px 16px; font-size: 16px; line-height: 1.35; margin: 0 0 10px; cursor: pointer; transition: border-color .15s ease, background .15s ease, transform .08s ease; color: var(--ink); }
.opz:hover { border-color: #CBD5E1; }
.opz:active { transform: scale(.995); }
.opz .lett { width: 34px; height: 34px; border-radius: 10px; background: var(--bg); color: var(--ink-2); font-weight: 700; display: grid; place-items: center; flex: none; font-size: 14px; transition: background .15s ease, color .15s ease; }
.opz.sel { border-color: var(--teal); background: var(--teal-soft); }
.opz.sel .lett { background: var(--teal); color: #fff; }
.card.poll { border-color: #F9CFA6; background: linear-gradient(180deg, #FFFCF8, #fff); }
.card.test { border-color: #B9E0E4; }
.ok { display: flex; gap: 12px; align-items: center; background: var(--green-soft); border: 1px solid #BBF7D0; color: #14532D; border-radius: 14px; padding: 14px 16px; font-size: 15px; }
.ok svg { width: 22px; height: 22px; color: var(--green); flex: none; }
.warn { display: flex; gap: 12px; align-items: flex-start; background: var(--amber-soft); border: 1px solid #FDE68A; color: #78350F; border-radius: 14px; padding: 12px 14px; font-size: 14px; }
.warn svg { width: 20px; height: 20px; color: var(--amber); flex: none; margin-top: 1px; }
.msg { color: var(--red); font-size: 14px; min-height: 18px; margin-top: 8px; }
.informativa { font-size: 13px; color: var(--ink-2); line-height: 1.5; background: var(--bg); border-radius: 12px; padding: 12px 14px; margin: 12px 0 14px; }

/* finestra nome */
.modal { position: fixed; inset: 0; background: rgba(15, 23, 42, .55); display: flex; align-items: center; justify-content: center; z-index: 30; padding: 16px; backdrop-filter: blur(4px); }
.modal .box { background: #fff; border-radius: 20px; padding: 24px; max-width: 420px; width: 100%; box-shadow: 0 24px 60px rgba(15, 23, 42, .25); }
.modal h2 { margin: 0 0 6px; font-size: 22px; }
.modal input { width: 100%; font-size: 17px; padding: 13px 14px; border: 1.5px solid var(--line); border-radius: 12px; margin: 12px 0 14px; outline: none; }
.modal input:focus { border-color: var(--teal); box-shadow: 0 0 0 4px rgba(2, 128, 144, .12); }

/* schermo intero */
.fs { position: fixed; inset: 0; background: #0B0F14; z-index: 20; display: flex; flex-direction: column; }
.fs .fs-img { flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; padding: 6px; }
.fs .fs-img img { max-width: 100%; max-height: 100%; object-fit: contain; border-radius: 6px; }
.fs .fs-bar { display: flex; gap: 8px; align-items: center; padding: 10px 12px; background: #111827; color: #E5E7EB; flex-wrap: wrap; }
.fs .fs-bar .btn { background: #1F2937; border-color: #374151; color: #fff; padding: 9px 12px; }
.fs .fs-bar .btn:disabled { opacity: .35; }
.fs .fs-bar .sp { margin-left: auto; font-size: 14px; color: #9CA3AF; }
.fs .fs-testo { background: #fff; color: var(--ink); max-height: 45%; overflow: auto; padding: 14px 16px; }

/* test */
.exam { max-width: 760px; margin: 0 auto; }
.exam-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.exam-top .step { font-size: 14px; color: var(--ink-2); font-weight: 600; }
.timer { display: inline-flex; align-items: center; gap: 6px; font-variant-numeric: tabular-nums; font-weight: 600; color: var(--ink-2); font-size: 14px; }
.timer svg { width: 16px; height: 16px; }
.timer.rosso { color: var(--red); }
.qbar { height: 8px; background: var(--line); border-radius: 999px; overflow: hidden; margin-bottom: 18px; }
.qbar span { display: block; height: 100%; background: var(--teal); border-radius: 999px; transition: width 1s linear; }
.qbar.rosso span { background: var(--red); }
.q { animation: in .25s ease; }
@keyframes in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.q .testo-q { font-size: 19px; line-height: 1.45; margin: 0 0 16px; font-weight: 500; }
.q .opz { padding: 15px 16px; }
.exam-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 8px; flex-wrap: wrap; }
.blocco { display: flex; gap: 12px; align-items: flex-start; background: var(--red-soft); border: 1px solid #FECACA; color: #7F1D1D; border-radius: 14px; padding: 16px; font-size: 15px; }
.blocco svg { width: 22px; height: 22px; color: var(--red); flex: none; }
#testView, #testView * { user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
.wm { position: fixed; inset: 0; pointer-events: none; z-index: 8; overflow: hidden; }
.wm span { position: absolute; white-space: nowrap; font-size: 14px; color: rgba(11, 94, 102, .11); transform: rotate(-20deg); font-weight: 600; }
.ai-nascosta { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.copri { position: fixed; inset: 0; background: var(--teal-dark); color: #fff; display: flex; align-items: center; justify-content: center; text-align: center; padding: 24px; z-index: 30; font-size: 19px; line-height: 1.5; }
.copri .btn { margin-top: 18px; }

/* ===== test: avvio, cruscotto, uscite ===== */
.card.test.allerta { background: #0F172A; border-color: #1E293B; color: #E2E8F0; }
.card.test.allerta .eyebrow { color: #F87171; }
.card.test.allerta h2 { color: #fff; font-size: 24px; }
.card.test.allerta .lead { color: #CBD5E1; }
.card.test.allerta .informativa { background: rgba(255, 255, 255, .06); color: #94A3B8; }
.redlist { list-style: none; padding: 0; margin: 10px 0 14px; display: grid; gap: 8px; }
.redlist li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: #E2E8F0; }
.redlist li::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #EF4444; margin-top: 8px; flex: none; }
.btn.danger { background: var(--red); border-color: var(--red); color: #fff; }
.btn.danger:hover { background: #B91C1C; }
.hud { display: grid; grid-template-columns: 1fr auto; gap: 6px 16px; align-items: center; background: #0F172A; color: #E2E8F0; border-radius: 14px; padding: 12px 16px; margin-bottom: 14px; box-shadow: var(--shadow); }
.hud .rec { display: inline-flex; align-items: center; gap: 8px; color: #FCA5A5; font-size: 13px; font-weight: 600; white-space: nowrap; }
.hud .rec::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: #EF4444; box-shadow: 0 0 0 3px rgba(239, 68, 68, .25); }
.hud .bigwrap { display: flex; flex-direction: column; align-items: flex-end; }
.hud .big { font-size: 28px; font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1; color: #fff; }
.hud .big.rosso { color: #F87171; }
.hud .meta { font-size: 12px; color: #94A3B8; }
.hud .meta b { color: #E2E8F0; font-weight: 600; }
.hud .meta b.alert { color: #F87171; }
.hud-row { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 4px 16px; border-top: 1px solid #1E293B; padding-top: 8px; }
.hud-row .meta { white-space: nowrap; }
.alert-screen { position: fixed; inset: 0; z-index: 30; background: #1F2937; color: #fff; display: flex; align-items: center; justify-content: center; text-align: center; padding: 24px; }
.alert-screen h2 { font-size: 28px; margin: 0 0 8px; color: #FCA5A5; }
.alert-screen p { color: #E2E8F0; font-size: 16px; line-height: 1.5; margin: 0 auto 20px; max-width: 460px; }

/* ===== banner schermo intero e appunti ===== */
.banner { display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; background: var(--teal-dark); color: #fff; padding: 8px 16px; font-size: 14px; }
.banner .btn.sm { background: #fff; color: var(--teal-dark); border-color: #fff; }
.note-area { width: 100%; min-height: 170px; resize: vertical; font: inherit; font-size: 15px; line-height: 1.5; padding: 12px; border: 1.5px solid var(--line); border-radius: 12px; outline: none; color: var(--ink); background: #FFFDF5; }
.note-area:focus { border-color: var(--teal); box-shadow: 0 0 0 4px rgba(2, 128, 144, .12); }
.note-tools { margin-top: 10px; }
.note-tools .btn { flex: 1 1 auto; }
.fs .fs-testo .note-area { min-height: 130px; }
.mat-list { display: grid; gap: 2px; }
.mat-grp { margin-top: 8px; }
.mat-grp .eyebrow { margin-bottom: 6px; }
.mat-item { display: flex; align-items: center; gap: 8px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 10px; text-decoration: none; color: var(--ink); font-size: 13px; margin-bottom: 6px; }
.mat-item:hover { background: #F8FAFC; border-color: #CBD5E1; }
.mat-item svg { width: 16px; height: 16px; color: var(--teal); flex: none; }
.mat-item span { flex: 1; word-break: break-all; }
.mat-item em { font-style: normal; color: var(--ink-3); font-size: 12px; flex: none; }

/* =====================================================================
   Pagina delle partecipanti (body.aula), versione del 7 novembre 2026.
   Regole tutte sotto .aula: la regia non ne viene toccata.
   ===================================================================== */
.aula { --pan-w: clamp(320px, 27vw, 430px); --top-h: 58px; font-family: system-ui, -apple-system, "Segoe UI", Roboto, Calibri, Arial, sans-serif; color: #111827; overflow-x: hidden; }
.aula .top-in, .aula .wrap { max-width: 1640px; }
.aula .wrap { padding: 14px 16px 28px; }
.aula .brand { font-size: 16px; }
.aula .chip { font-size: 15px; padding: 8px 14px 8px 10px; min-height: 40px; }
.aula .brand { flex: none; }
.aula .brand .mark { flex: none; }
.aula .brand > span:last-child { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.aula .chip { min-width: 0; flex: 0 1 auto; }
.aula .chip svg { flex: none; }
.aula #nomeTxt { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.aula .banner { font-size: 15px; padding: 10px 16px; }
.aula .banner .btn.sm { min-height: 40px; }
.aula .btn { min-height: 44px; }
.aula .btn.big { min-height: 52px; padding: 12px 18px; font-size: 16px; border-radius: 14px; }
.aula .btn:focus-visible, .aula .tab:focus-visible, .aula .bn:focus-visible, .aula .fab:focus-visible, .aula .mat-item:focus-visible { outline: 3px solid rgba(2, 128, 144, .45); outline-offset: 2px; }
.aula .card.poll .etichetta { color: var(--ink-2); }
.aula .lead { color: #1F2937; }

/* slide */
.aula .layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; align-items: start; }
.aula .slide-head { flex-wrap: wrap; }
.aula .slide-head .muted { font-size: 15px; }
.aula .slide-frame { width: 100%; aspect-ratio: 16 / 9; margin: 0 auto; }
.aula .slide-frame img { transition: opacity .22s ease; }
.aula .slide-frame img.cambio { opacity: .12; }
.aula .slide-tools { justify-content: center; }
@media (min-width: 1024px) {
  .aula .layout { grid-template-columns: minmax(0, 1fr) var(--pan-w); }
  .aula.pannello-chiuso .layout { grid-template-columns: minmax(0, 1fr); }
  .aula.pannello-chiuso .pannello { display: none; }
  .aula .slide-frame, .aula .slide-col .progress, .aula .slide-col .slide-head, .aula .slide-col .slide-tools { width: min(100%, calc((100vh - 236px) * 1.7778)); margin-left: auto; margin-right: auto; }
  .aula.fs-on .slide-frame, .aula.fs-on .slide-col .progress, .aula.fs-on .slide-col .slide-head, .aula.fs-on .slide-col .slide-tools { width: min(100%, calc((100vh - 190px) * 1.7778)); }
}
@supports (height: 100dvh) {
  @media (min-width: 1024px) {
    .aula .slide-frame, .aula .slide-col .progress, .aula .slide-col .slide-head, .aula .slide-col .slide-tools { width: min(100%, calc((100dvh - 236px) * 1.7778)); }
    .aula.fs-on .slide-frame, .aula.fs-on .slide-col .progress, .aula.fs-on .slide-col .slide-head, .aula.fs-on .slide-col .slide-tools { width: min(100%, calc((100dvh - 190px) * 1.7778)); }
  }
}

/* pannello: appunti, testo, materiali */
.aula .pannello { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); display: flex; flex-direction: column; padding: 12px 14px 14px; min-width: 0; }
.aula .pannello-head { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.aula .tabs { display: flex; gap: 4px; background: var(--bg); padding: 4px; border-radius: 12px; flex: 1; min-width: 0; }
.aula .tab { flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 6px; border: 0; background: transparent; color: var(--ink-2); font: inherit; font-weight: 600; font-size: 15px; padding: 10px 6px; border-radius: 9px; cursor: pointer; position: relative; min-height: 44px; transition: background .15s ease, color .15s ease, box-shadow .15s ease; }
.aula .tab svg { width: 18px; height: 18px; }
.aula .tab.on { background: #fff; color: var(--teal-dark); box-shadow: 0 1px 3px rgba(15, 23, 42, .12); }
.aula .pane { display: flex; flex-direction: column; flex: 1 1 auto; min-height: 0; }
.aula .pane[hidden] { display: none !important; }
.aula .pane-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin: 2px 2px 8px; }
.aula .pane-head h3 { font-size: 17px; color: #111827; margin: 0; }
.aula #pane-note .note-area { flex: 1 1 auto; min-height: 220px; resize: none; font-size: 16px; line-height: 1.55; }
.aula #pane-testo pre { flex: 1 1 auto; overflow: auto; font-size: 16px; line-height: 1.55; background: var(--bg); border-radius: 12px; padding: 12px 14px; min-height: 140px; color: #111827; }
.aula #pane-mat .mat-list { flex: 1 1 auto; overflow: auto; min-height: 120px; padding-right: 2px; align-content: start; }
.aula .note-tools { margin-top: 10px; }
.aula .note-tools .btn { flex: 1 1 auto; min-height: 44px; }
.aula .pannello-nota { margin: 10px 2px 0; line-height: 1.4; }
.aula .vuoto { color: #334155; font-size: 15px; background: var(--bg); border-radius: 12px; padding: 14px 16px; margin: 0; line-height: 1.5; }
.aula .mat-grp { margin-top: 10px; }
.aula .mat-grp .eyebrow { font-size: 13px; color: var(--teal-dark); }
.aula .mat-item { font-size: 14.5px; padding: 11px 12px; min-height: 46px; transition: background .15s ease, border-color .15s ease; }
.aula .mat-item.scarica { opacity: .55; pointer-events: none; }
.aula .mat-item.nuovo { border-color: var(--teal); background: var(--teal-soft); }
.aula .mat-item span { word-break: normal; overflow-wrap: anywhere; line-height: 1.35; }
.aula #poll, .aula #testCard, .aula #slideBox { scroll-margin-top: calc(var(--top-h) + 14px); }
.aula .exam .ok { font-size: 16px; line-height: 1.5; }
.aula .badge { position: absolute; top: 5px; right: 7px; width: 10px; height: 10px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 3px rgba(242, 153, 74, .28); }
@media (min-width: 1024px) {
  .aula .pannello { position: sticky; top: calc(var(--top-h) + 12px); height: calc(100vh - var(--top-h) - 30px); max-height: 900px; }
  .aula .pannello .chiudi { display: none; }
}
@supports (height: 100dvh) { @media (min-width: 1024px) { .aula .pannello { height: calc(100dvh - var(--top-h) - 30px); } } }

/* telefono e tablet: barra in basso e pannello che sale dal basso */
.aula .bottom-nav { display: none; }
.aula .sheet-backdrop { position: fixed; inset: 0; background: rgba(15, 23, 42, .38); z-index: 25; }
@media (max-width: 1023.98px) {
  .aula .solo-largo { display: none !important; }
  .aula main.wrap { padding-bottom: calc(104px + env(safe-area-inset-bottom, 0px)); }
  .aula .bottom-nav { display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 24; gap: 8px; background: rgba(255, 255, 255, .97); border-top: 1px solid var(--line); padding: 8px 10px calc(8px + env(safe-area-inset-bottom, 0px)); box-shadow: 0 -6px 20px rgba(15, 23, 42, .06); }
  .aula .bn { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; border: 1px solid var(--line); background: #fff; border-radius: 14px; padding: 8px 6px; font: inherit; font-size: 15px; font-weight: 600; color: #111827; min-height: 60px; position: relative; cursor: pointer; transition: background .15s ease, border-color .15s ease; }
  .aula .bn svg { width: 22px; height: 22px; color: var(--teal); }
  .aula .bn.on { border-color: var(--teal); background: var(--teal-soft); }
  .aula .pannello { position: fixed; left: 0; right: 0; bottom: 0; z-index: 26; height: min(80vh, 720px); max-height: none; border-radius: 22px 22px 0 0; border-bottom: 0; padding: 8px 14px calc(14px + env(safe-area-inset-bottom, 0px)); transform: translateY(105%); visibility: hidden; transition: transform .26s ease, visibility 0s linear .26s; box-shadow: 0 -18px 40px rgba(15, 23, 42, .18); }
  .aula.sheet-aperto .pannello { transform: none; visibility: visible; transition: transform .26s ease, visibility 0s; }
  .aula .pannello::before { content: ""; display: block; width: 46px; height: 5px; border-radius: 3px; background: #CBD5E1; margin: 0 auto 10px; flex: none; }
  .aula .pannello .chiudi { flex: none; }
  .aula #pane-note .note-area { min-height: 28vh; }
  .aula .pannello-nota { display: none; }
  .aula .slide-tools .btn { flex: 1 1 40%; }
}
@supports (height: 100dvh) { @media (max-width: 1023.98px) { .aula .pannello { height: min(80dvh, 720px); } } }
@media (max-width: 420px) {
  .aula .tab svg { display: none; }
  .aula .pannello .chiudi span { display: none; }
}
@media (min-width: 1024px) { .aula .bottom-nav, .aula .sheet-backdrop { display: none !important; } }

/* pulsante Appunti quando il pannello è chiuso (Slide grande) */
.aula .fab { position: fixed; right: 22px; bottom: 22px; z-index: 22; display: inline-flex; align-items: center; gap: 8px; border: 0; background: var(--teal-dark); color: #fff; font: inherit; font-weight: 600; font-size: 16px; padding: 14px 22px; border-radius: 999px; box-shadow: 0 10px 30px rgba(11, 94, 102, .35); cursor: pointer; }
.aula .fab svg { width: 20px; height: 20px; }
.aula .fab .badge { top: 3px; right: 6px; }

/* avvisi a comparsa */
.aula .toasts { position: fixed; z-index: 45; left: 50%; transform: translateX(-50%); top: calc(var(--top-h) + 10px); display: grid; gap: 8px; width: min(92vw, 480px); pointer-events: none; }
.aula .toast { background: #0F172A; color: #fff; border-radius: 12px; padding: 12px 16px; font-size: 15px; line-height: 1.4; box-shadow: 0 12px 30px rgba(15, 23, 42, .25); }
.aula .toast.mat { background: var(--teal-dark); }

/* durante il test restano solo le domande */
.aula.in-test .bottom-nav, .aula.in-test .fab, .aula.in-test .pannello, .aula.in-test .sheet-backdrop { display: none !important; }
.aula.in-test main.wrap { padding-bottom: 28px; }
.aula .exam-foot .btn.big { min-width: 180px; }

/* animazioni sobrie */
@keyframes aulaCompari { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes aulaToastIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
@keyframes aulaToastOut { to { opacity: 0; transform: translateY(-6px); } }
@media (prefers-reduced-motion: no-preference) {
  .aula .appear { animation: aulaCompari .3s ease both; }
  .aula .toast { animation: aulaToastIn .25s ease both; }
  .aula .toast.via { animation: aulaToastOut .3s ease both; }
  .aula .fab:not([hidden]) { animation: aulaCompari .25s ease both; }
}
@media (prefers-reduced-motion: reduce) {
  .aula *, .aula *::before, .aula *::after { animation: none !important; transition: none !important; }
}

/* accesso riservato agli iscritti */
.cancello { position: fixed; inset: 0; z-index: 25; background: #F4F7F8; display: flex; align-items: center; justify-content: center; padding: 16px; }
.cancello[hidden] { display: none; }
.cancello-box { background: #fff; border-radius: 20px; padding: 28px 24px; max-width: 460px; width: 100%; box-shadow: 0 24px 60px rgba(15, 23, 42, .18); text-align: center; }
.cancello-box h2 { margin: 0 0 10px; font-size: 22px; }
.cancello-box p { margin: 0 0 16px; line-height: 1.5; color: #334155; }
.cancello-box .cancello-nota { font-size: 14px; color: #64748B; margin: 14px 0 0; }

/* chat dell'aula e mano alzata */
.chip.mano.on { background: #FFF4DE; border-color: #F2B544; color: #7A4A00; }
.chip.mano.on svg { color: #B26A00; }
.chat-lista { display: flex; flex-direction: column; gap: 8px; max-height: 46vh; min-height: 160px; overflow-y: auto; padding: 4px 2px 8px; }
.chat-msg { background: var(--bg, #F4F7F8); border-radius: 12px; padding: 8px 11px; max-width: 92%; align-self: flex-start; }
.chat-msg.mio { align-self: flex-end; background: #E3F2F3; }
.chat-msg.docente { background: #0B5E66; color: #fff; }
.chat-meta { display: flex; gap: 8px; align-items: baseline; font-size: 12.5px; margin-bottom: 2px; }
.chat-meta span { opacity: .7; }
.chat-txt { font-size: 15px; line-height: 1.45; word-wrap: break-word; overflow-wrap: anywhere; }
.chat-form { display: flex; gap: 8px; align-items: flex-end; margin-top: 8px; }
.chat-form textarea { flex: 1; font: inherit; font-size: 16px; padding: 10px 12px; border: 1.5px solid var(--line, #D6DEE2); border-radius: 12px; resize: none; min-height: 46px; }
.chat-form textarea:focus { outline: none; border-color: var(--teal, #028090); }
@media (max-width: 480px) { .top-in .chip span { max-width: 38vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .top-in #btnMano span { display: none; } .top-in #btnMano { padding: 8px 11px; gap: 0; } }