/* Pagina del cubo di Rubik: si appoggia a ../css/style.css del sito (token, font, nav, pulsanti, tema). */

:root {
  --rubik-ok:   #15803d;
  --rubik-warn: #c2410c;
  --net-cell:   18px;
}
[data-theme="dark"] {
  --rubik-ok:   #4ade80;
  --rubik-warn: #fb923c;
}

.rubik { padding-block: clamp(28px, 5vw, 56px) clamp(40px, 6vw, 72px); }
.rubik > section + section { margin-top: clamp(36px, 5vw, 56px); }

.rubik__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.6vw, 3rem);
  margin-top: 6px;
}
.rubik__intro { max-width: 68ch; }
.rubik__subtitle { font-family: var(--font-display); font-size: 1.5rem; margin-bottom: 10px; }

.rubik__steps { counter-reset: step; margin-top: 22px; display: grid; gap: 8px; }
.rubik__steps li { counter-increment: step; display: flex; gap: 12px; align-items: baseline; }
.rubik__steps li::before {
  content: counter(step);
  display: grid; place-items: center; flex: none;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent-text);
  font-size: 13px; font-weight: 650;
}

.rubik__note, .rubik__privacy { margin-top: 18px; color: var(--text-soft); font-size: .95rem; }
.rubik__note { padding: 12px 16px; border-left: 3px solid var(--accent); background: var(--bg-inset); border-radius: 0 10px 10px 0; }

.rubik__actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.btn:disabled { opacity: .55; cursor: default; transform: none; }

.rubik__load { margin-top: 14px; min-height: 1.6em; color: var(--text-soft); }
.rubik__load.is-error, .is-warn { color: var(--rubik-warn); }
.is-ok { color: var(--rubik-ok); }

/* ---------- Scansione ---------- */
.rubik__app {
  display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px); align-items: start;
}
.rubik__stage {
  position: relative; overflow: hidden;
  aspect-ratio: 4 / 3; border-radius: var(--radius-lg);
  background: #000; box-shadow: var(--shadow-md);
}
.rubik__stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }
/* Fotogramma e disegno sono NON specchiati: il canvas si specchia tutto insieme. */
.rubik__stage.is-mirrored canvas { transform: scaleX(-1); }
/* Il video serve solo da sorgente: resta nella pagina (Safari non aggiorna un video tolto o display:none). */
.rubik__source { position: fixed; top: 0; left: 0; width: 1px; height: 1px; opacity: 0; pointer-events: none; }

.rubik__status { font-weight: 600; font-size: 1.05rem; }
.rubik__hint { margin-top: 6px; color: var(--text-soft); font-size: .95rem; }
.rubik__hint.is-warn { color: var(--rubik-warn); }
.rubik__event { margin-top: 10px; font-family: var(--font-mono); font-size: .9rem; color: var(--text-soft); }

.net {
  display: grid; margin-top: 18px; gap: 2px;
  grid-template-columns: repeat(12, var(--net-cell));
  grid-template-rows: repeat(9, var(--net-cell));
}
.net__cell { position: relative; border-radius: 3px; box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .25); }
.net__cell.is-empty { background: var(--bg-inset); box-shadow: inset 0 0 0 1px var(--line); }
.net__cell.is-doubtful::after {
  content: "×"; position: absolute; inset: 0;
  display: grid; place-items: center;
  color: #fff; font-weight: 700; line-height: 1; text-shadow: 0 0 2px #000;
}

/* ---------- Guida ---------- */
.rubik__guide .rubik__app { margin-top: 18px; }
.rubik__guide.is-manual .rubik__app { grid-template-columns: minmax(0, 760px); }
.rubik__camera .rubik__hint { margin-top: 10px; }
.move {
  display: flex; flex-wrap: wrap; gap: clamp(18px, 3vw, 30px); align-items: center; padding: clamp(16px, 3vw, 24px);
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
}
.move__icon { width: 168px; height: 168px; flex: none; background: #0b0f18; border-radius: var(--radius); }
.icon__layer { stroke: #fff; stroke-width: .04; }
.icon__arrow { stroke: #ffff00; stroke-width: .09; stroke-linecap: round; }
.move__text { min-width: 0; flex: 1 1 220px; }
.move__label { color: var(--text-faint); font-size: .85rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; }
.move__name { font-family: var(--font-mono); font-size: clamp(2.4rem, 7vw, 3.4rem); font-weight: 500; line-height: 1.1; margin: 4px 0 6px; }
.move__description { font-size: 1.05rem; }
.move__count { margin-top: 6px; color: var(--text-soft); font-size: .92rem; }

.rubik__solved {
  margin-top: 18px; padding: clamp(16px, 3vw, 24px);
  border-radius: var(--radius-lg); background: var(--accent-soft); color: var(--accent-text);
}
.rubik__keys { margin-top: 10px; color: var(--text-faint); font-size: .88rem; }

.moves { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; }
.moves li {
  font-family: var(--font-mono); font-size: .92rem;
  padding: 3px 10px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--bg-inset); color: var(--text-soft);
}
.moves li.is-done { opacity: .5; text-decoration: line-through; }
.moves li.is-current { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-text); font-weight: 600; }

/* ---------- Come funziona ---------- */
.rubik__about { max-width: 68ch; }
.rubik__list { display: grid; gap: 10px; }
.rubik__list li { padding-left: 18px; position: relative; color: var(--text-soft); }
.rubik__list li::before { content: ""; position: absolute; left: 0; top: .72em; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

@media (max-width: 820px) {
  .rubik__app { grid-template-columns: 1fr; }
}

/* ---------- Modalità app (telefoni): scansione e guida a tutto schermo, comandi sempre visibili ---------- */
@media (max-width: 820px), (max-height: 520px) {
  html.is-running, html.is-running body { overflow: hidden; }
  .rubik__screen:not([hidden]) {
    position: fixed; inset: 0; z-index: 200; margin: 0;
    display: flex; flex-direction: column; align-items: stretch; gap: 10px;
    height: 100vh; height: 100dvh;
    padding: max(10px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right))
             max(10px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
    background: var(--bg);
  }
  .rubik__screen .rubik__subtitle, .rubik__screen .rubik__keys { display: none; }
  /* Il video prende tutto lo spazio che resta; il fotogramma ci sta dentro intero. */
  .rubik__screen .rubik__stage {
    flex: 1 1 0; min-height: 0; aspect-ratio: auto !important;
    border-radius: var(--radius); box-shadow: none;
  }
  .rubik__screen .rubik__status { font-size: .98rem; line-height: 1.4; }
  .rubik__screen .rubik__hint { margin-top: 3px; font-size: .86rem; line-height: 1.4; }
  .rubik__screen .rubik__event { margin-top: 4px; font-size: .78rem; }
  .rubik__screen .rubik__actions { margin-top: 10px; gap: 8px; }
  .rubik__screen .btn {
    flex: 1 1 0; min-width: 0; justify-content: center;
    padding: 10px 10px; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  }
  .rubik__screen .btn:hover { transform: none; }

  /* Scansione: messaggi a sinistra, croce delle facce a destra, pulsanti sotto. */
  .rubik__panel--scan { flex: none; display: grid; grid-template-columns: minmax(0, 1fr) auto; column-gap: 12px; align-items: start; }
  .rubik__panel--scan .rubik__messages { grid-column: 1; grid-row: 1; }
  .rubik__panel--scan .net { grid-column: 2; grid-row: 1; margin-top: 2px; gap: 1px; --net-cell: 10px; }
  .rubik__panel--scan .rubik__actions { grid-column: 1 / -1; flex-wrap: nowrap; }

  /* Guida: video sopra (se la conferma è automatica), mossa e pulsanti sotto. */
  .rubik__guidehead { flex: none; }
  .rubik__guidehead .rubik__hint { margin-top: 0; }
  .rubik__guide .rubik__app { flex: 1 1 0; min-height: 0; display: flex; flex-direction: column; align-items: stretch; gap: 10px; margin-top: 0; }
  .rubik__camera { flex: 1 1 0; min-height: 0; display: flex; flex-direction: column; }
  .rubik__camera .rubik__hint { flex: none; margin-top: 6px; }
  .rubik__guide .rubik__panel { flex: none; }
  .rubik__guide.is-manual .rubik__app { justify-content: center; }
  .move { flex-wrap: nowrap; gap: 14px; padding: 10px 12px; border-radius: var(--radius); }
  .move__icon { width: 84px; height: 84px; }
  .move__label { display: none; }
  .move__name { font-size: 2rem; margin: 0; }
  .move__description { font-size: .92rem; line-height: 1.35; }
  .move__count { margin-top: 2px; font-size: .8rem; }
  .rubik__solved { padding: 12px 14px; border-radius: var(--radius); }
  .rubik__guide .rubik__event { margin-top: 8px; }
  .rubik__guide .rubik__actions { display: grid; grid-template-columns: 1fr 1fr; }
  .rubik__guide .rubik__actions #doneButton { grid-column: 1 / -1; }
  .moves { flex-wrap: nowrap; overflow-x: auto; margin-top: 8px; scrollbar-width: none; }
  .moves li { flex: none; }
}

/* Telefono in orizzontale: video a sinistra, il resto a destra. */
@media (orientation: landscape) and (max-height: 520px) {
  #scanSection:not([hidden]) { flex-direction: row; }
  .rubik__panel--scan { width: 44%; overflow-y: auto; }
  .rubik__guide .rubik__app { flex-direction: row; }
  .rubik__guide .rubik__panel { width: 50%; overflow-y: auto; }
  .rubik__guidehead .rubik__hint { display: none; }
}