/* 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; }