/* ==========================================================================
   Lykeion · vetro liquido
   Il nuovo aspetto di sito e app: sfondo metallico che si muove piano e sfuma
   scendendo (js/feel.js), superfici di vetro per barre, menu e fogli,
   angoli morbidi, ombre semplici, pagine che entrano con una molla.
   Caricato dopo style.css e mobile.css: qui si cambia l'aspetto, non la struttura.
   ========================================================================== */

/* ---------- materiali ---------- */
:root, :root[data-theme="dark"] {
  --m1: #17181c; --m2: #2f3138; --m3: #1d1e23; --m4: #43454e; --m5: #26272d;
  --tint: #0a84ff;
  --glass: rgba(34, 34, 40, 0.58);
  --glass-2: rgba(30, 30, 35, 0.9);
  --glass-edge: rgba(255, 255, 255, 0.11);
  --glass-spec: rgba(255, 255, 255, 0.14);
  --card: rgba(255, 255, 255, 0.045);
  --card-edge: rgba(255, 255, 255, 0.075);
  --sh-1: 0 1px 1px rgba(0, 0, 0, 0.18), 0 6px 18px rgba(0, 0, 0, 0.18);
  --sh-2: 0 2px 4px rgba(0, 0, 0, 0.2), 0 14px 36px rgba(0, 0, 0, 0.32);
  --sh-3: 0 24px 70px rgba(0, 0, 0, 0.5);
  --veil: rgba(0, 0, 0, 0.34);
  --sheen: rgba(255, 255, 255, 0.05);
  --title: linear-gradient(180deg, #ffffff 30%, #b9bcc6 120%);
}
:root[data-theme="light"] {
  --m1: #e9e7e3; --m2: #ffffff; --m3: #dcdee3; --m4: #f6f5f2; --m5: #e2e3e7;
  --tint: #007aff;
  --glass: rgba(255, 255, 255, 0.6);
  --glass-2: rgba(250, 250, 248, 0.92);
  --glass-edge: rgba(255, 255, 255, 0.85);
  --glass-spec: rgba(255, 255, 255, 0.95);
  --card: rgba(255, 255, 255, 0.66);
  --card-edge: rgba(29, 27, 24, 0.06);
  --sh-1: 0 1px 1px rgba(29, 27, 24, 0.04), 0 6px 18px rgba(29, 27, 24, 0.07);
  --sh-2: 0 2px 4px rgba(29, 27, 24, 0.05), 0 14px 36px rgba(29, 27, 24, 0.12);
  --sh-3: 0 24px 70px rgba(29, 27, 24, 0.22);
  --veil: rgba(20, 20, 24, 0.18);
  --sheen: rgba(255, 255, 255, 0.7);
  --title: linear-gradient(180deg, #1d1b18 35%, #5d5a55 125%);
}
:root {
  --r: 18px;
  --r-sm: 12px;
  --r-sheet: 26px;
  --r-tray: 22px;
  --blur: saturate(1.6) blur(16px);
  --spring: cubic-bezier(0.34, 1.32, 0.64, 1);
  --spring-soft: cubic-bezier(0.22, 1.12, 0.36, 1);
}

/* il vetro: sfondo traslucido, riflesso in alto, bordo di luce, ombra morbida */
.sidebar, .topbar, .tabbar, .tb-more, .ui-menu, .pk,
.nb-modal:not(.nb-lightbox):not(.nb-drawing):not(.nb-fileview):not(.nb-images):not(.vc-modal) {
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
}

/* ---------- sfondo metallico ----------
   Un solo strato fermo, senza filtri: il metallo (sfumature morbide più le righe
   del metallo spazzolato) gira un poco e si scioglie nel fondo solo mentre si scorre
   (js/feel.js cambia trasformazione e trasparenza, lavoro della GPU). Fermi = zero lavoro. */
html { background: var(--app); }
body { background: transparent; }
.ambient {
  position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none;
  background: var(--app);
}
.ambient i { position: absolute; display: block; }
.am-metal {
  inset: -18%;
  background:
    repeating-linear-gradient(112deg, rgba(255, 255, 255, 0.016) 0 1px, transparent 1px 3px),
    radial-gradient(42% 34% at 20% 20%, rgba(255, 255, 255, 0.07), transparent 72%),
    radial-gradient(38% 32% at 82% 72%, rgba(191, 90, 242, 0.1), transparent 72%),
    radial-gradient(70% 55% at 30% 35%, var(--m2), transparent 70%),
    radial-gradient(60% 50% at 75% 60%, var(--m4), transparent 72%),
    linear-gradient(160deg, var(--m1), var(--m3) 45%, var(--m5) 75%, var(--m1));
  opacity: 0.9;
  will-change: transform;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
:root[data-theme="light"] .am-metal {
  background:
    repeating-linear-gradient(112deg, rgba(255, 255, 255, 0.45) 0 1px, transparent 1px 3px),
    radial-gradient(42% 34% at 20% 20%, rgba(255, 255, 255, 0.6), transparent 72%),
    radial-gradient(38% 32% at 82% 72%, rgba(191, 90, 242, 0.07), transparent 72%),
    radial-gradient(70% 55% at 30% 35%, var(--m2), transparent 70%),
    radial-gradient(60% 50% at 75% 60%, var(--m4), transparent 72%),
    linear-gradient(160deg, var(--m1), var(--m3) 45%, var(--m5) 75%, var(--m1));
}
/* scendendo il metallo si scioglie nel colore di fondo */
.am-veil {
  inset: 0;
  background: linear-gradient(180deg, color-mix(in srgb, var(--app) 40%, transparent) 0%, var(--app) 85%);
  opacity: 0;
  will-change: opacity;
  transition: opacity 0.5s linear;
}

/* ---------- struttura: foglio trasparente, barre di vetro ---------- */
.sheet { background: transparent; border: 0; }
.topbar {
  background: linear-gradient(180deg, var(--glass-spec) -140%, transparent 60%), var(--glass);
  border-bottom: 0;
  box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-1);
}
.topbar::before { display: none; }

@media (min-width: 981px) {
  .sidebar {
    top: calc(10px + var(--sat, 0px)); bottom: calc(10px + var(--sab, 0px)); left: calc(10px + var(--sal, 0px));
    width: var(--sidebar-w);
    padding: 0;
    border-radius: 26px;
    background: linear-gradient(180deg, var(--glass-spec) -40%, transparent 30%), var(--glass);
    box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-2);
    overflow: hidden;
  }
  .main {
    margin-left: calc(var(--sidebar-w) + 20px + var(--sal, 0px));
    padding: calc(10px + var(--sat, 0px)) calc(10px + var(--sar, 0px)) 10px 0;
  }
  .topbar { top: calc(10px + var(--sat, 0px)); border-radius: 20px; margin: 0 4px; }
  body::before { background: transparent; }
}
/* drawer (iPad verticale, telefono di lato) */
@media (max-width: 980px) {
  .sidebar {
    background: var(--glass-2);
    border-right: 0;
    border-radius: 0 28px 28px 0;
    box-shadow: inset -0.5px 0 0 var(--glass-edge);
  }
  body.nav-open .sidebar { box-shadow: inset -0.5px 0 0 var(--glass-edge), var(--sh-3); }
  .scrim { background: var(--veil); }
  /* barra in alto a tutta larghezza, il vetro copre anche la zona dell'ora */
  .main { padding-top: 0; }
  .topbar { top: 0; height: calc(54px + var(--sat, 0px)); padding-top: var(--sat, 0px); border-radius: 0 0 22px 22px; }
  body::before { display: none; }
}

/* voci del menu laterale: pillole morbide */
.topbar :is(.top-more, .top-search, #calc-btn, #ask-btn, .menu-btn) {
  border-radius: 999px;
  background: rgba(var(--ink-rgb), 0.08);
  box-shadow: inset 0 0 0 0.5px var(--glass-edge);
  transition: transform 0.35s var(--spring), background 0.2s;
}
.topbar :is(.top-more, .top-search, #calc-btn, #ask-btn, .menu-btn):active { transform: scale(0.92); }

.nav-item, .nav-sub a { border-radius: 12px; transition: background 0.2s, transform 0.3s var(--spring); }
.nav-item { color: rgba(var(--ink-rgb), 0.64); }
.nav-item .nav-ic:not(.nav-subj) { color: inherit; }
.nav-item:hover { color: var(--ink); }
.nav-item.active { color: var(--ink); font-weight: 600; background: rgba(var(--ink-rgb), 0.1); box-shadow: inset 0 0 0 0.5px var(--glass-edge); }
.nav-item:active { transform: scale(0.97); }
.search { border-radius: 12px; background: rgba(var(--ink-rgb), 0.06); }
.sidebar-foot { border-top-color: var(--card-edge); }

/* ---------- componenti: angoli tondi, ombre semplici ---------- */
.card {
  background: linear-gradient(180deg, var(--sheen), transparent 46%), var(--card);
  border: 0.5px solid var(--card-edge);
  border-radius: 22px;
  box-shadow: var(--sh-1);
}
.subject-card {
  background: linear-gradient(180deg, var(--sheen), transparent 50%), var(--card);
  border: 0.5px solid var(--card-edge);
  border-radius: 20px;
  box-shadow: var(--sh-1);
  transition: transform 0.4s var(--spring), box-shadow 0.3s, background 0.2s;
}
@media (hover: hover) {
  .subject-card:hover { transform: translateY(-2px); box-shadow: var(--sh-2); background: var(--card); border-color: var(--card-edge); }
}
.btn {
  height: 42px;
  background: var(--card);
  border: 0.5px solid var(--card-edge);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
  transition: transform 0.35s var(--spring), background 0.2s, opacity 0.2s, box-shadow 0.2s;
}
.btn-sm { height: 34px; }
.btn-primary, .btn-light {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0) 60%), var(--solid);
  border: 0;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.12), 0 6px 16px rgba(0, 0, 0, 0.12);
}
/* pulsanti distruttivi («Elimina», «Esci ovunque»): rossi anche qui; senza, .btn sopra li
   lasciava col fondo del vetro e il testo bianco (invisibile nel tema chiaro) */
.btn-danger {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0) 60%), var(--ko);
  border: 0;
  color: #fff;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.12), 0 6px 16px rgba(0, 0, 0, 0.12);
}
.btn:active, .chip:active, .tool-row:active, .subject-card:active, .tb-item:active, .tb-tile:active, .tb-subj:active, .tb-row:active {
  transform: scale(0.96);
  transition-duration: 0.12s;
}
.chip { transition: transform 0.35s var(--spring), background 0.2s, color 0.2s; }
.seg { background: rgba(var(--ink-rgb), 0.07); box-shadow: inset 0 0 0 0.5px var(--card-edge); }
.seg button { transition: background 0.25s, color 0.2s, box-shadow 0.25s; }
.nb-input { border-radius: 14px; }
.tool-row { border-radius: 14px; transition: transform 0.35s var(--spring), background 0.2s; }
.toast {
  background: var(--glass-2);
  color: var(--ink);
  box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-2);
  padding: 12px 20px;
  font-weight: 500;
  transition: opacity 0.3s, transform 0.5s var(--spring);
}

/* titolo della home: un filo di metallo */
.home-hero h1 { background: var(--title); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* Attività: il bonsai su un prato di luce, la fiamma con il suo calore */
.at-card { border: 0.5px solid var(--card-edge); border-radius: 24px; box-shadow: var(--sh-1); }
.at-garden { background: radial-gradient(90% 70% at 50% 18%, color-mix(in srgb, #30d158 13%, transparent), transparent 70%), linear-gradient(180deg, var(--sheen), transparent 40%), var(--raised); }
.at-fire { background: radial-gradient(70% 55% at 50% 34%, color-mix(in srgb, #ff9500 9%, transparent), transparent 72%), linear-gradient(180deg, var(--sheen), transparent 40%), var(--raised); }
.at-fire.lit { background: radial-gradient(70% 55% at 50% 34%, color-mix(in srgb, #ff6a00 20%, transparent), transparent 72%), linear-gradient(180deg, var(--sheen), transparent 40%), var(--raised); }
.at-bar i { background: linear-gradient(90deg, #2f9a4b, #5cc474); box-shadow: 0 0 10px rgba(92, 196, 116, 0.35); }

/* ---------- nota aperta: la barra della nota sostituisce quella in alto (js/nb/notebook.js) ---------- */
html.nb-open .topbar { display: none; }
html.nb-open .nb-ed-top {
  border-bottom: 0;
  background: linear-gradient(180deg, var(--glass-spec) -140%, transparent 60%), var(--glass);
  -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur);
  box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-1);
}
html.nb-open .nb-ed-top :is(.nb-icon-btn, .nb-folder-chip, .btn) { border-radius: 999px; }
@media (min-width: 981px) {
  html.nb-open .nb-ed-top { top: calc(10px + var(--sat, 0px)); height: 56px; margin: 0 4px 6px; border-radius: 20px; }
  html.nb-open .nb-side { top: calc(10px + var(--sat, 0px)); height: calc(100vh - 20px - var(--sat, 0px)); }
  html.nb-open .nb-editor-wrap.ink-mode, html.nb-open .nb-editor-wrap.file-mode { height: calc(100dvh - 20px - var(--sat, 0px)); }
}
@media (max-width: 980px) {
  html.nb-open .nb-ed-top { top: 0; height: calc(56px + var(--sat, 0px)); padding-top: var(--sat, 0px); border-radius: 0 0 22px 22px; }
  html.nb-open .nb-side { top: 0; height: 100vh; }
  html.nb-open .nb-editor-wrap.ink-mode, html.nb-open .nb-editor-wrap.file-mode { height: 100dvh; }
}
/* note a mano: foglio semplice come prima, niente metallo, niente vetro, niente sfumature */
html.nb-ink .ambient { display: none; }
html.nb-ink, html.nb-ink body { background: var(--sheet); }
html.nb-ink .nb-ed-top {
  background: var(--sheet);
  -webkit-backdrop-filter: none; backdrop-filter: none;
  box-shadow: 0 0.5px 0 var(--stroke);
}
html.nb-ink .sidebar { background: var(--app); -webkit-backdrop-filter: none; backdrop-filter: none; }

/* ---------- finestra «Scarica l'app» (js/pwa.js) ---------- */
.dl-modal { width: min(500px, 100%); }
.dl-modal h3 { margin: 0 0 4px; font-size: 22px; letter-spacing: -0.02em; }
.dl-lead { margin: 0 0 16px; color: var(--ink-2); font-size: 14.5px; }
.dl-list { display: grid; gap: 8px; }
.dl-row {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 12px 12px 14px; border-radius: 18px;
  background: var(--card); box-shadow: inset 0 0 0 0.5px var(--card-edge);
}
.dl-row.mine { background: rgba(var(--ink-rgb), 0.09); box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-1); }
.dl-ic { width: 38px; height: 38px; flex: none; border-radius: 12px; display: grid; place-items: center; background: rgba(var(--ink-rgb), 0.07); color: var(--ink); }
.dl-ic svg { width: 21px; height: 21px; }
.dl-t { flex: 1; min-width: 0; display: grid; gap: 1px; }
.dl-t b { font-size: 15.5px; font-weight: 600; }
.dl-t small { font-size: 13px; color: var(--ink-3); line-height: 1.35; }
.dl-row .btn { flex: none; }
.dl-note { margin: 14px 2px 0; font-size: 12.5px; color: var(--ink-3); line-height: 1.45; }
.dl-modal .nb-modal-actions { align-items: center; }
.dl-ver { margin-right: auto; font-size: 12.5px; color: var(--ink-4); }

/* ---------- Finanze, Roblox, Admin: le stesse schede di vetro del resto ---------- */
:is(.fn-hero > div, .fn-card, .fn-form, .rbx-hero > div, .rbx-card, .rbx-settings, .adm-card) {
  background: linear-gradient(180deg, var(--sheen), transparent 45%), var(--card);
  border: 0.5px solid var(--card-edge);
  border-radius: 24px;
  box-shadow: var(--sh-1);
}
:is(.fn-tile, .rbx-tile, .rbx-pod, .adm-tile) {
  background: linear-gradient(180deg, var(--sheen), transparent 55%), var(--card);
  border: 0.5px solid var(--card-edge);
  border-radius: 20px;
  box-shadow: var(--sh-1);
}
:is(.fn-welcome, .fn-pg-stats > div) { background: var(--card); box-shadow: inset 0 0 0 0.5px var(--card-edge); border-radius: 18px; }
:is(.fn-tip, .rbx-tip, .adm-tt) {
  background: var(--glass-2); border: 0; border-radius: 12px;
  box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-2);
}
:is(.fn-form, .rbx-settings, .rbx-pick) :is(input:not([type=checkbox]):not([type=radio]):not([type=range]), select, textarea) {
  border-radius: 12px; background: rgba(var(--ink-rgb), 0.06); border-color: var(--card-edge);
}
.adm-chip.on { background: var(--card); box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-1); }
.rbx-table tbody tr:hover { background: rgba(var(--ink-rgb), 0.04); }

/* ---------- Orario ---------- */
.or-now {
  border-radius: 24px; border: 0.5px solid var(--card-edge);
  background: linear-gradient(180deg, var(--sheen), transparent 50%), var(--card);
  box-shadow: var(--sh-1);
}
.or-now-col + .or-now-col { border-left-color: var(--card-edge); }
.or-now-v { font-size: 26px; }
.or-dot { width: 12px; height: 12px; box-shadow: 0 0 0 4px color-mix(in srgb, var(--c) 22%, transparent); }
.or-bar { height: 6px; background: rgba(var(--ink-rgb), 0.08); }
.or-bar i { background: linear-gradient(90deg, color-mix(in srgb, var(--c) 75%, #000), var(--c)); box-shadow: 0 0 12px color-mix(in srgb, var(--c) 55%, transparent); }
.or-grid-wrap {
  border: 0.5px solid var(--card-edge);
  background: linear-gradient(180deg, var(--sheen), transparent 40%), var(--card);
  box-shadow: var(--sh-1);
}
.or-cell { transition: transform 0.35s var(--spring); }
@media (hover: hover) { .or-cell:not(.or-free):hover { transform: translateY(-1px); } }
.or-list li {
  border-radius: 18px; padding: 13px 15px;
  background: linear-gradient(140deg, color-mix(in srgb, var(--c) 26%, transparent), color-mix(in srgb, var(--c) 8%, transparent));
  box-shadow: inset 0 0 0 0.5px color-mix(in srgb, var(--c) 32%, transparent), inset 3px 0 0 var(--c), var(--sh-1);
}

/* ---------- calcolatrice ----------
   Niente sfocatura dal vivo: su WebKit una sfocatura che si sposta con una trasformazione
   può far sparire il contenuto del pannello mentre lo si trascina. Vetro quasi pieno.
   Spazi interni tutti uguali (--clp). */
.cl-panel {
  --clp: 14px;
  background: linear-gradient(180deg, var(--glass-spec) -40%, transparent 22%), var(--glass-2);
  -webkit-backdrop-filter: none; backdrop-filter: none;
  border: 0; border-radius: 26px;
  box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-3);
}
:root:not([data-theme="light"]) .cl-panel { background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent 22%), #232327; }
:root[data-theme="light"] .cl-panel { background: linear-gradient(180deg, #fff, #fbfbf9); }
.cl-panel.cl-moving { box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-3); will-change: transform; }
.cl-grab { height: 18px; margin-bottom: 0; padding-top: 6px; }
.cl-head { padding: 4px var(--clp) 10px; gap: 6px; border-bottom: 0.5px solid var(--card-edge); }
.cl-tabs { border-radius: 14px; background: rgba(var(--ink-rgb), 0.07); }
.cl-tabs button { border-radius: 11px; }
.cl-pane { padding: var(--clp); gap: calc(10px * var(--cl-s)); }
.cl-hist { padding: 0; }
.cl-row { padding: 6px 10px; }
.cl-inrow { gap: 8px; }
.cl-in, .cl-mode { border-radius: 14px; border-color: var(--card-edge); background: rgba(var(--ink-rgb), 0.06); }
.cl-live { margin: 0 2px; }
.cl-keys { gap: calc(6px * var(--cl-s)); }
.cl-keys button { border-radius: calc(14px * var(--cl-s)); }
.cl-grip { right: 6px; bottom: 6px; }
.cl-pill { background: var(--glass-2); border: 0; box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-2); }

/* ---------- materie: lo stesso stile dell'orario ovunque ----------
   Una sfumatura del colore della materia e una riga a sinistra. Vale per le cartelle del
   quaderno, le materie in home, le lezioni (domani, registro), le cose da fare in Attività.
   Nel registro solo le lezioni: compiti e verifiche restano neutri. */
:is(.folder-tile, .subject-card, .cal-lessons li, .at-item, .rg-lessons li, .pr-subj, .nb-folder-hero) {
  background: linear-gradient(140deg, color-mix(in srgb, var(--c) 24%, transparent), color-mix(in srgb, var(--c) 8%, transparent));
  border: 0;
  box-shadow: inset 0 0 0 0.5px color-mix(in srgb, var(--c) 32%, transparent), inset 3px 0 0 var(--c);
}
@media (hover: hover) {
  :is(.folder-tile, .subject-card):hover {
    background: linear-gradient(140deg, color-mix(in srgb, var(--c) 30%, transparent), color-mix(in srgb, var(--c) 11%, transparent));
    box-shadow: inset 0 0 0 0.5px color-mix(in srgb, var(--c) 40%, transparent), inset 3px 0 0 var(--c), var(--sh-2);
  }
}
:is(.folder-tile, .subject-card) .folder-ic, .subject-card .subject-ic { background: color-mix(in srgb, var(--c) 22%, transparent); color: var(--c); }
.rg-lessons li, .cal-lessons li { border-radius: 14px; }
.rg-hpos { color: var(--c); }

/* ---------- quaderno ---------- */
.nb-side {
  border-right: 0;
  top: calc(72px + var(--sat, 0px)); height: calc(100vh - 82px - var(--sat, 0px));
  margin: 0 0 0 4px; padding: 14px 8px;
  border-radius: 22px;
  background: linear-gradient(180deg, var(--sheen), transparent 30%), var(--card);
  box-shadow: inset 0 0 0 0.5px var(--card-edge), var(--sh-1);
}
.nb-tree-item { border-radius: 12px; color: rgba(var(--ink-rgb), 0.72); }
.nb-tree-item:hover { background: rgba(var(--ink-rgb), 0.05); color: var(--ink); }
.nb-tree-item.active { background: rgba(var(--ink-rgb), 0.1); color: var(--ink); font-weight: 600; box-shadow: inset 0 0 0 0.5px var(--glass-edge); }
.nb-side-foot { border-top-color: var(--card-edge); }
.nb-icon-btn { border: 0; background: var(--card); box-shadow: inset 0 0 0 0.5px var(--card-edge), var(--sh-1); transition: transform 0.3s var(--spring), background 0.2s; }
.nb-icon-btn:active { transform: scale(0.92); }
.nb-icon-btn.sm { box-shadow: none; background: transparent; }
.nb-page-head { align-items: center; }
.nb-new { padding: 0 20px; }
.nb-new svg { width: 18px; height: 18px; }
.nb-search {
  height: 48px; border-radius: 16px;
  background: rgba(var(--ink-rgb), 0.06); box-shadow: inset 0 0 0 0.5px var(--card-edge);
}
.nb-section { padding-top: 32px; }
.nb-h { font-size: 12.5px; font-weight: 650; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 14px; }
/* cartelle: piastrelle della materia */
.folder-tiles { grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 12px; }
.folder-tile { min-height: 84px; padding: 16px; border-radius: 20px; transition: transform 0.4s var(--spring), box-shadow 0.3s, background 0.2s; }
.folder-tile:active { transform: scale(0.97); }
.folder-tile b { font-size: 16px; }
.folder-ic { border-radius: 12px; }
/* «Continua»: le note recenti in una fila da scorrere */
.nb-strip {
  display: grid; grid-auto-flow: column; grid-auto-columns: minmax(220px, 250px); grid-template-columns: none;
  overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none;
  margin: -6px -6px 0; padding: 6px 6px 10px;
}
.nb-strip::-webkit-scrollbar { display: none; }
.nb-strip > .note-card { scroll-snap-align: start; }
/* schede delle note */
.note-cards { gap: 14px; }
.note-card {
  min-height: 140px; border: 0; border-radius: 20px;
  background: linear-gradient(180deg, var(--sheen), transparent 45%), var(--card);
  box-shadow: inset 0 0 0 0.5px var(--card-edge), var(--sh-1);
  transition: transform 0.4s var(--spring), box-shadow 0.3s;
}
@media (hover: hover) { .note-card:hover { transform: translateY(-2px); box-shadow: inset 0 0 0 0.5px var(--card-edge), var(--sh-2); background: linear-gradient(180deg, var(--sheen), transparent 45%), var(--card); border-color: transparent; } }
.note-card:active { transform: scale(0.98); }
.note-thumb { height: 130px; margin: 8px 8px 0; border: 0; border-radius: 14px; background: var(--raised); box-shadow: inset 0 0 0 0.5px var(--card-edge); }
.note-thumb.paper { background: #fff; }
.note-card-body { padding: 12px 16px 14px; gap: 5px; }
.note-card-body b { font-size: 15.5px; }
.note-snippet { -webkit-line-clamp: 2; }
.note-card small { display: flex; align-items: center; gap: 8px; margin-top: auto; padding-top: 6px; font-size: 12.5px; color: var(--ink-3); }
.note-folder {
  max-width: 60%; padding: 2px 9px; border-radius: 999px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-weight: 600; font-size: 11.5px; color: var(--ink);
  background: color-mix(in srgb, var(--c) 20%, transparent);
  box-shadow: inset 0 0 0 0.5px color-mix(in srgb, var(--c) 35%, transparent);
}
.nb-folder-page .note-folder { display: none; }
/* intestazione della cartella */
.nb-folder-hero {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 18px 20px; margin: 4px 0 18px; border-radius: 26px;
}
.nb-folder-hero .folder-ic { width: 56px; height: 56px; border-radius: 16px; background: color-mix(in srgb, var(--c) 26%, transparent); color: var(--c); }
.nb-folder-hero .folder-ic svg { width: 28px; height: 28px; }
.nb-folder-hero-t { flex: 1; min-width: 180px; }
.nb-folder-hero h1 { margin: 0; font-size: clamp(28px, 3.6vw, 38px); }
.nb-folder-hero .lead { margin: 4px 0 0; font-size: 15px; color: var(--ink-2); }
.nb-folder-hero .lead a { color: var(--ink); }
/* cartella vuota */
.nb-empty-folder {
  display: grid; justify-items: center; gap: 8px; padding: 44px 24px; text-align: center;
  border: 0; border-radius: 24px; background: var(--card); box-shadow: inset 0 0 0 0.5px var(--card-edge);
}
.nb-empty-folder .folder-ic { width: 52px; height: 52px; border-radius: 16px; background: color-mix(in srgb, var(--c) 20%, transparent); color: var(--c); }
.nb-empty-folder b { font-size: 17px; }
.nb-empty-folder p { margin: 0 0 8px; color: var(--ink-3); }
.nb-crumbs { margin-bottom: 8px; }

/* ---------- movimento: le pagine entrano con una molla ---------- */
::view-transition-old(root) { animation: vtOut 0.12s ease-out both; }
::view-transition-new(root) { animation: vtPop 0.32s cubic-bezier(0.22, 1, 0.36, 1) both; }
@keyframes vtPop { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.view.active { animation: vtPop 0.32s cubic-bezier(0.22, 1, 0.36, 1) both; }
html.vt-nav .view.active, html.vt .view.active { animation: none; }
.tabbar { view-transition-name: tabbar; }
::view-transition-group(tabbar), ::view-transition-new(tabbar) { animation: none; }
::view-transition-old(tabbar) { display: none; }

/* avvio: tutto entra insieme, senza lampi */
.main { transition: opacity 0.55s ease, transform 0.7s var(--spring-soft); }
.tabbar { transition: transform 0.5s var(--spring), opacity 0.4s ease; }
html.booting .main { opacity: 0; transform: translateY(10px) scale(0.992); }
html.booting .tabbar { opacity: 0; }
@media (min-width: 981px) {
  .sidebar { transition: opacity 0.5s ease, transform 0.4s var(--ease); }
  html.booting .sidebar { opacity: 0; }
}

/* ---------- barra in basso (telefono, js/tabbar.js) ---------- */
.tabbar { display: none; }
html.has-tabbar .tabbar {
  display: flex; align-items: stretch;
  position: fixed; z-index: 60;
  left: calc(14px + var(--sal, 0px)); right: calc(14px + var(--sar, 0px)); bottom: max(8px, calc(var(--sab, 0px) - 12px));
  max-width: 520px; margin: 0 auto;
  height: 64px; padding: 6px;
  border-radius: 32px;
  background: linear-gradient(180deg, var(--glass-spec) -60%, transparent 55%), var(--glass);
  box-shadow: inset 0 0 0 0.5px var(--glass-edge), inset 0 1px 0 var(--glass-spec), var(--sh-2);
  transform-origin: 50% 100%;
}
html.has-tabbar .tabbar.min { transform: translateY(4px) scale(0.9); }
html.has-tabbar:is(.tb-hide, .kb-open) .tabbar { transform: translateY(calc(100% + 40px)); opacity: 0; pointer-events: none; }
.tb-item {
  flex: 1 1 0; min-width: 0;
  color: rgba(var(--ink-rgb), 0.55) !important;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  position: relative; z-index: 1;
  border-radius: 26px;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.25s, transform 0.35s var(--spring);
}
.tb-item.active { color: var(--ink) !important; }
.tb-ic { width: 26px; height: 26px; display: grid; place-items: center; }
.tb-ic svg { width: 24px; height: 24px; }
.tb-item.active .tb-ic svg { stroke-width: 2; }
.tb-l { font-size: 10.5px; font-weight: 600; letter-spacing: 0; line-height: 1.1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }
/* la goccia sotto la scheda attiva */
.tb-ind {
  position: absolute; top: 6px; bottom: 6px; left: 0; width: 0;
  border-radius: 26px;
  background: linear-gradient(180deg, rgba(var(--ink-rgb), 0.15), rgba(var(--ink-rgb), 0.07));
  box-shadow: inset 0 0 0 0.5px var(--glass-edge), inset 0 1px 0 var(--glass-spec);
  opacity: 0;
  transition: transform 0.55s var(--spring), width 0.55s var(--spring), opacity 0.2s;
}
.tb-ind.ready { opacity: 1; }
/* il menu laterale lascia il posto alla barra */
html.has-tabbar .menu-btn { display: none !important; }
html.has-tabbar .content { padding-bottom: calc(110px + var(--sab, 0px)); }
html.has-tabbar .toast { bottom: calc(80px + var(--sab, 0px)); }
html.has-tabbar.tb-hide .toast { bottom: calc(24px + var(--sab, 0px)); }

/* «Altro» */
.tb-more-back {
  position: fixed; inset: 0; z-index: 390;
  display: flex; align-items: flex-end; justify-content: center;
  background: var(--veil);
  opacity: 0; transition: opacity 0.3s;
}
.tb-more-back.in { opacity: 1; }
.tb-more-back.out { opacity: 0; }
.tb-more {
  width: min(560px, 100%);
  max-height: 84dvh; overflow: auto; overscroll-behavior: contain;
  padding: 10px 16px calc(22px + var(--sab, 0px));
  border-radius: 32px 32px 0 0;
  background: linear-gradient(180deg, var(--glass-spec) -30%, transparent 18%), var(--glass-2);
  box-shadow: inset 0 0.5px 0 var(--glass-edge), var(--sh-3);
  transform: translateY(100%);
  transition: transform 0.55s var(--spring-soft);
}
.tb-more-back.in .tb-more { transform: none; }
.tb-more-back.out .tb-more { transform: translateY(100%); transition: transform 0.28s ease-in; }
.tb-grab { display: block; width: 38px; height: 5px; border-radius: 3px; background: var(--fill-3); margin: 2px auto 14px; }
.tb-search {
  width: 100%; height: 46px; display: flex; align-items: center; gap: 10px;
  padding: 0 14px; border: 0; border-radius: 15px;
  background: rgba(var(--ink-rgb), 0.07); color: var(--ink-3);
  font: inherit; font-size: 15.5px; text-align: left; cursor: pointer;
}
.tb-search svg { width: 18px; height: 18px; flex: none; }
.tb-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px 6px; margin: 20px 0 4px; }
.tb-tile {
  display: flex; flex-direction: column; align-items: center; gap: 7px;
  color: var(--ink); text-decoration: none; font-size: 12px; font-weight: 500; line-height: 1.2; text-align: center;
  transition: transform 0.35s var(--spring);
}
.tb-tile-ic {
  width: 56px; height: 56px; flex: none; border-radius: 18px;
  display: grid; place-items: center;
  background: var(--card); color: var(--ink);
  box-shadow: inset 0 0 0 0.5px var(--card-edge), var(--sh-1);
}
.tb-tile-ic svg { width: 25px; height: 25px; }
.tb-h { margin: 22px 4px 10px; font-size: 13px; font-weight: 600; color: var(--ink-3); letter-spacing: 0.01em; }
.tb-subjects { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.tb-subj, .tb-row {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; min-height: 52px;
  border: 0; border-radius: 16px;
  background: var(--card); box-shadow: inset 0 0 0 0.5px var(--card-edge);
  color: var(--ink); text-decoration: none; font: inherit; font-size: 15px; text-align: left; cursor: pointer;
  transition: transform 0.35s var(--spring);
}
.tb-subj-ic { width: 28px; height: 28px; display: grid; place-items: center; flex: none; }
.tb-subj-ic svg { width: 22px; height: 22px; }
.tb-foot { margin-top: 22px; display: grid; gap: 14px; }
.tb-row { width: 100%; }
.tb-row .tb-tile-ic { width: 32px; height: 32px; border-radius: 10px; box-shadow: none; background: transparent; }
.tb-row .tb-tile-ic svg { width: 21px; height: 21px; }
.tb-legal { display: flex; justify-content: center; gap: 18px; font-size: 13px; }
.tb-legal a { color: var(--ink-3); text-decoration: none; }
.tb-more-back.in :is(.tb-tile, .tb-subj) { animation: tbIn 0.5s var(--spring-soft) both; }
.tb-more-back.in .tb-grid > :nth-child(2) { animation-delay: 25ms; }
.tb-more-back.in .tb-grid > :nth-child(3) { animation-delay: 50ms; }
.tb-more-back.in .tb-grid > :nth-child(4) { animation-delay: 75ms; }
.tb-more-back.in .tb-grid > :nth-child(n+5) { animation-delay: 100ms; }
.tb-more-back.in .tb-subjects > * { animation-delay: 130ms; }
@keyframes tbIn { from { opacity: 0; transform: translateY(14px) scale(0.94); } to { opacity: 1; transform: none; } }

/* ---------- fogli dal basso e finestre ---------- */
.nb-modal-back { background: var(--veil); }
.nb-modal:not(.nb-lightbox):not(.nb-drawing):not(.nb-fileview):not(.nb-images):not(.vc-modal) {
  background: linear-gradient(180deg, var(--glass-spec) -40%, transparent 22%), var(--glass-2);
  border: 0;
  border-radius: 28px;
  box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-3);
}
.nb-modal-back.is-sheet > .nb-modal {
  border-radius: 32px 32px 0 0;
  transition: transform 0.55s var(--spring-soft);
}
.nb-modal-back.is-sheet.out > .nb-modal { transition: transform 0.26s ease-in; }
html:not(.kb-open) .nb-modal-back.is-sheet { padding-bottom: 0; }
/* iPad: il foglio sale dal basso ma resta sospeso, con tutti gli angoli tondi
   (non il telefono di lato: lì resta attaccato al bordo) */
@media (min-width: 601px) and (min-height: 601px) {
  html .nb-modal-back.is-sheet { padding-bottom: calc(18px + var(--sab, 0px) + var(--kb-h, 0px)); }
  .nb-modal-back.is-sheet > .nb-modal {
    width: min(620px, calc(100% - 32px));
    border-radius: 32px;
    padding-bottom: 22px;
    transform: translateY(calc(100% + 40px));
  }
  .nb-modal-back.is-sheet.out > .nb-modal { transform: translateY(calc(100% + 40px)); }
}
.ui-menu {
  background: linear-gradient(180deg, var(--glass-spec) -40%, transparent 25%), var(--glass-2);
  border-radius: 18px;
  box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-2);
}
/* menu come foglio (⋯ in alto a destra, menu delle note): attaccato al bordo in basso come gli altri fogli */
.ui-menu.is-sheet {
  left: 0 !important; right: 0; bottom: var(--kb-h, 0px);
  border-radius: 30px 30px 0 0;
  padding: 22px 10px calc(10px + var(--sab, 0px));
  max-height: calc(100dvh - 24px - var(--sat, 0px) - var(--kb-h, 0px)) !important;
  transform: translateY(100%);
  transition: transform 0.5s var(--spring-soft);
}
.ui-menu.is-sheet.in { transform: none; }
.ui-menu.is-sheet.out { transform: translateY(40%); transition: transform 0.13s ease-in, opacity 0.13s ease-in; }
.pk { background: var(--glass-2); box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-3); }

/* ---------- privacy: solo numeri e grafici nella nebbia (js/app.js privacy()) ---------- */
.privacy-fog :is(.fn-big, .fn-mid, .fn-tv, .fn-s, .fn-amt, .fn-hbar b, .fn-up em, .fn-sum b, .fn-calc-r b, .fn-calc-r small,
  .fn-meter-l b, .fn-accbal, .fn-pg-stats, .fn-pg-hist, .fn-imp-stats, .fn-conv, .fn-calc-mini b, .fn-calc-mini small,
  .rbx-big, .rbx-hs, .rbx-tv, .rbx-s, .rbx-delta, .rbx-pod-v, .rbx-table td:not(:first-child), .rbx-eur,
  [data-private]),
.privacy-fog[data-view="admin"] :is(td, b, strong, .num) {
  filter: blur(0.32em);
  opacity: 0.8;
  -webkit-user-select: none; user-select: none;
  transition: filter 0.35s, opacity 0.35s;
}
.privacy-fog :is(.fn-chart, .fn-hbars i, .fn-meter, .rbx-chart, .rbx-spark, .rbx-hbars, .gym-chart),
.privacy-fog[data-view="admin"] svg {
  filter: blur(10px) saturate(0.6);
  opacity: 0.65;
  pointer-events: none;
  transition: filter 0.4s, opacity 0.4s;
}
.privacy-fog :is(.fn-tip, .rbx-tip) { display: none !important; }
.privacy-pill {
  position: fixed; z-index: 70; left: 50%; bottom: calc(22px + var(--sab, 0px));
  display: flex; align-items: center; gap: 9px;
  padding: 10px 12px 10px 14px; border: 0; border-radius: 999px;
  background: var(--glass-2); color: var(--ink);
  box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-2);
  font: inherit; font-size: 14px; white-space: nowrap; cursor: pointer;
  transform: translate(-50%, 30px); opacity: 0; pointer-events: none;
  transition: transform 0.5s var(--spring), opacity 0.3s;
}
.privacy-pill.show { transform: translate(-50%, 0); opacity: 1; pointer-events: auto; }
.privacy-pill svg { width: 18px; height: 18px; color: var(--ink-2); }
.privacy-pill b { padding: 4px 11px; border-radius: 999px; background: var(--solid); color: var(--on-solid); font-weight: 600; font-size: 13px; }
html.has-tabbar:not(.tb-hide) .privacy-pill { bottom: calc(78px + var(--sab, 0px)); }

/* ---------- voce: onde che seguono chi parla (js/feel.js) ---------- */
.mv { display: inline-flex; align-items: center; gap: 3px; height: 18px; flex: none; color: var(--ink); }
.mv i { display: block; width: 3px; height: 100%; border-radius: 2px; background: currentColor; transform: scaleY(0.18); transform-origin: 50% 50%; will-change: transform; }
.mv-rec { color: #ff453a; }
.mv-pill {
  position: fixed; z-index: 460; left: 50%; top: calc(10px + var(--sat, 0px));
  display: flex; align-items: center; gap: 10px;
  padding: 9px 18px 9px 15px; border-radius: 999px;
  background: var(--glass-2); color: var(--ink);
  box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-2);
  font-size: 14px; pointer-events: none;
  transform: translate(-50%, -160%) scale(0.9); opacity: 0;
  transition: transform 0.55s var(--spring), opacity 0.3s;
}
.mv-pill.show { transform: translate(-50%, 0) scale(1); opacity: 1; }
.mv-pill b { font-weight: 600; }

/* ---------- note a mano sul computer: solo lettura (js/nb/notebook.js inkViewer) ---------- */
html.no-ink a[href*="/new/ink"] { display: none !important; }
.ink-viewing :is(.nb-ink-tools, [data-act="transcribe"]) { display: none !important; }
.nb-ink-view { flex: 1; min-width: 0; min-height: 0; overflow: auto; padding: 18px 16px 60px; display: grid; justify-items: center; align-content: start; gap: 16px; }
.nb-ink-ro { margin: 0; padding: 8px 16px; border-radius: 999px; background: var(--card); box-shadow: inset 0 0 0 0.5px var(--card-edge); color: var(--ink-2); font-size: 13.5px; text-align: center; }
.nb-ink-pages { width: min(900px, 100%); display: grid; gap: 20px; }
.nb-ink-vpage { width: 100%; border-radius: 16px; overflow: hidden; background: var(--raised); color: var(--ink); box-shadow: var(--sh-1); }
.nb-ink-vpage.paper { background: #fff; }
.nb-ink-vpage svg { width: 100%; height: 100%; }

/* sito aggiunto alla schermata Home: come nell'app, niente selezione tenendo premuto */
@media (display-mode: standalone) and (pointer: coarse) {
  html, body { -webkit-user-select: none; user-select: none; -webkit-touch-callout: none; }
  :is(input, textarea, [contenteditable="true"], [contenteditable=""], [contenteditable="true"] *, .cm-editor, .cm-editor *) { -webkit-user-select: text; user-select: text; -webkit-touch-callout: default; }
}

/* ---------- schermate d'ingresso: accesso, lingua, termini (js/auth.js, js/i18n.js, js/legal.js) ----------
   Lo sfondo liquido (.lq): il metallo del sito e tre gocce di luce che girano piano,
   solo con transform (lavoro della GPU, niente filtri). Sopra, schede di vetro che entrano
   con una molla, prima la scheda e poi le righe una dopo l'altra, con un filo di luce
   che scorre sul bordo. Vale anche per la pagina di benvenuto (css/landing.css). */
:root, :root[data-theme="dark"] {
  --rim: rgba(255, 255, 255, 0.5);
  --rim-2: rgba(191, 90, 242, 0.5);
  --glass-deep: saturate(1.8) blur(28px);
}
:root[data-theme="light"] {
  --rim: rgba(255, 255, 255, 1);
  --rim-2: rgba(191, 90, 242, 0.35);
}
.lq { isolation: isolate; background: var(--app); }
.lq::before, .lq::after { content: ""; position: fixed; z-index: -1; pointer-events: none; will-change: transform; }
.lq::before {
  inset: -18%;
  background:
    repeating-linear-gradient(112deg, rgba(255, 255, 255, 0.016) 0 1px, transparent 1px 3px),
    radial-gradient(42% 34% at 20% 20%, rgba(255, 255, 255, 0.07), transparent 72%),
    radial-gradient(70% 55% at 30% 35%, var(--m2), transparent 70%),
    radial-gradient(60% 50% at 75% 60%, var(--m4), transparent 72%),
    linear-gradient(160deg, var(--m1), var(--m3) 45%, var(--m5) 75%, var(--m1));
  opacity: 0.9;
  animation: lqMetal 48s ease-in-out infinite alternate;
}
:root[data-theme="light"] .lq::before {
  background:
    repeating-linear-gradient(112deg, rgba(255, 255, 255, 0.45) 0 1px, transparent 1px 3px),
    radial-gradient(42% 34% at 20% 20%, rgba(255, 255, 255, 0.6), transparent 72%),
    radial-gradient(70% 55% at 30% 35%, var(--m2), transparent 70%),
    radial-gradient(60% 50% at 75% 60%, var(--m4), transparent 72%),
    linear-gradient(160deg, var(--m1), var(--m3) 45%, var(--m5) 75%, var(--m1));
}
.lq::after {
  inset: -35%;
  background:
    radial-gradient(22% 18% at 33% 34%, rgba(255, 255, 255, 0.1), transparent 70%),
    radial-gradient(20% 17% at 67% 40%, rgba(191, 90, 242, 0.2), transparent 72%),
    radial-gradient(24% 19% at 54% 66%, rgba(214, 64, 159, 0.1), transparent 72%),
    radial-gradient(18% 16% at 31% 63%, rgba(255, 159, 10, 0.07), transparent 72%);
  animation: lqDrift 30s ease-in-out infinite alternate;
}
:root[data-theme="light"] .lq::after {
  background:
    radial-gradient(22% 18% at 33% 34%, rgba(255, 255, 255, 0.85), transparent 70%),
    radial-gradient(20% 17% at 67% 40%, rgba(191, 90, 242, 0.13), transparent 72%),
    radial-gradient(24% 19% at 54% 66%, rgba(214, 64, 159, 0.08), transparent 72%),
    radial-gradient(18% 16% at 31% 63%, rgba(255, 159, 10, 0.1), transparent 72%);
}
@keyframes lqMetal { from { transform: rotate(-4deg) scale(1.02); } to { transform: rotate(10deg) scale(1.1); } }
@keyframes lqDrift {
  0% { transform: translate3d(-3%, -2%, 0) rotate(0deg) scale(1); }
  50% { transform: translate3d(3%, 3%, 0) rotate(24deg) scale(1.08); }
  100% { transform: translate3d(-1%, 4%, 0) rotate(-16deg) scale(0.96); }
}
@keyframes lqIn { from { opacity: 0; transform: translateY(22px) scale(0.94); } to { opacity: 1; transform: none; } }
@keyframes lqRise { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes lqPop { from { opacity: 0; transform: scale(0.85); } to { opacity: 1; transform: none; } }
@keyframes lqBob { from { translate: 0 0; } to { translate: 0 -4px; } }
@keyframes lqSpin { to { transform: rotate(360deg); } }
@keyframes lqFade { from { opacity: 0; } }

/* la scheda di vetro (accesso, lingua, termini) */
:is(.auth-card, .lang-card, .lg-gate-card) {
  position: relative;
  border: 0;
  border-radius: 32px;
  background: linear-gradient(180deg, var(--glass-spec) -40%, transparent 28%), var(--glass);
  -webkit-backdrop-filter: var(--glass-deep);
  backdrop-filter: var(--glass-deep);
  box-shadow: inset 0 0 0 0.5px var(--glass-edge), inset 0 1px 0 var(--glass-spec), var(--sh-3);
}
/* il filo di luce che gira sul bordo (senza @property resta fermo: va bene lo stesso) */
@property --lq-a { syntax: "<angle>"; inherits: false; initial-value: 0deg; }
:is(.auth-card, .lang-card, .lg-gate-card)::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none;
  background: conic-gradient(from var(--lq-a), transparent 0deg, var(--rim) 50deg, transparent 110deg 200deg, var(--rim-2) 250deg, transparent 310deg);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.8;
  animation: lqRim 9s linear infinite;
}
@keyframes lqRim { to { --lq-a: 360deg; } }
/* senza sfocatura dietro (browser vecchi): vetro quasi pieno, così il testo sotto non disturba */
@supports not ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  :is(.auth-card, .lang-card, .lg-gate-card) { background: linear-gradient(180deg, var(--glass-spec) -40%, transparent 28%), var(--glass-2); }
}
.auth-solo .auth-card, .lang-card { animation: lqIn 0.75s var(--spring-soft) both; }
/* le righe entrano una dopo l'altra */
:is(.auth-card, .lang-card, .lg-gate-card) > * { animation: lqRise 0.6s var(--spring-soft) both; }
:is(.auth-card, .lang-card, .lg-gate-card) > :nth-child(2) { animation-delay: 0.1s; }
:is(.auth-card, .lang-card, .lg-gate-card) > :nth-child(3) { animation-delay: 0.14s; }
:is(.auth-card, .lang-card, .lg-gate-card) > :nth-child(4) { animation-delay: 0.18s; }
:is(.auth-card, .lang-card, .lg-gate-card) > :nth-child(5) { animation-delay: 0.22s; }
:is(.auth-card, .lang-card, .lg-gate-card) > :nth-child(6) { animation-delay: 0.26s; }
:is(.auth-card, .lang-card, .lg-gate-card) > :nth-child(7) { animation-delay: 0.3s; }
:is(.auth-card, .lang-card, .lg-gate-card) > :nth-child(n+8) { animation-delay: 0.34s; }
:is(.auth-card, .lang-card) > :is(.auth-x, .auth-lang) { animation: lqPop 0.5s var(--spring) 0.3s both; }
/* il marchio: una goccia di vetro che galleggia */
.auth-mark, .lg-ask-ic {
  width: 58px; height: 58px; flex: none;
  border: 0; border-radius: 19px;
  display: grid; place-items: center; color: var(--ink);
  background: linear-gradient(150deg, rgba(var(--ink-rgb), 0.16), rgba(var(--ink-rgb), 0.03) 70%), var(--card);
  box-shadow: inset 0 0 0 0.5px var(--glass-edge), inset 0 1px 0 var(--glass-spec), var(--sh-1);
}
.auth-mark svg, .lg-ask-ic svg { width: 28px; height: 28px; }
:is(.auth-card, .lang-card) > .auth-mark { animation: lqRise 0.6s var(--spring-soft) 0.06s both, lqBob 5s ease-in-out 0.8s infinite alternate; }
:is(.auth-card, .lang-card) h1, .lg-gate-card h2 {
  margin: 6px 0 0;
  font-family: var(--font-display); font-weight: 700; letter-spacing: -0.035em; line-height: 1.05;
  background: var(--title); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.auth-card h1 { font-size: 36px; }
.lang-card h1 { font-size: 30px; }
.auth-card .auth-lead, .lang-card .auth-lead { margin: -4px 0 6px; color: var(--ink-2); line-height: 1.5; }

/* accesso */
.auth-solo { padding: calc(24px + var(--sat, 0px)) 16px calc(24px + var(--sab, 0px)); }
.auth-solo .auth-card { width: min(420px, 100%); padding: 36px 30px 26px; }
.auth-field { gap: 7px; font-size: 13.5px; font-weight: 550; color: var(--ink-2); transition: color 0.2s; }
.auth-field:focus-within { color: var(--ink); }
.auth-field .nb-input {
  height: 50px; padding: 0 16px; font-size: 16px;
  border: 0; border-radius: 16px;
  background: rgba(var(--ink-rgb), 0.06);
  box-shadow: inset 0 0 0 0.5px var(--card-edge), inset 0 1px 2px rgba(0, 0, 0, 0.12);
  transition: background 0.2s, box-shadow 0.4s var(--spring);
}
.auth-field .nb-input:hover { background: rgba(var(--ink-rgb), 0.08); }
.auth-field .nb-input:focus { background: rgba(var(--ink-rgb), 0.09); box-shadow: inset 0 0 0 1px rgba(var(--ink-rgb), 0.32), 0 0 0 4px rgba(var(--ink-rgb), 0.08); }
:root[data-theme="light"] .auth-field .nb-input { background: rgba(255, 255, 255, 0.62); box-shadow: inset 0 0 0 0.5px rgba(29, 27, 24, 0.12), inset 0 1px 2px rgba(29, 27, 24, 0.06); }
:root[data-theme="light"] .auth-field .nb-input:focus { background: #fff; box-shadow: inset 0 0 0 1px rgba(29, 27, 24, 0.3), 0 0 0 4px rgba(29, 27, 24, 0.06); }
.auth-pw .nb-input, .auth-pass .nb-input { padding-right: 52px; }
.auth-eye { border-radius: 12px; transition: background 0.2s, color 0.2s, transform 0.3s var(--spring); }
.auth-eye:active { transform: translateY(-50%) scale(0.9); }
.auth-card > .auth-err, .auth-pw-form .auth-err {
  padding: 11px 14px; border-radius: 14px; font-size: 14px; font-weight: 500; line-height: 1.4;
  background: color-mix(in srgb, var(--ko) 13%, transparent); color: var(--ko);
  box-shadow: inset 0 0 0 0.5px color-mix(in srgb, var(--ko) 32%, transparent);
  animation: lqPop 0.45s var(--spring) both;
}
.auth-submit { position: relative; overflow: hidden; height: 52px; margin-top: 6px; font-size: 16px; font-weight: 600; letter-spacing: -0.01em; }
/* un riflesso che attraversa il pulsante al passaggio */
:is(.auth-submit, .lp-cta)::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(105deg, transparent 35%, rgba(255, 255, 255, 0.42) 50%, transparent 65%);
  transform: translateX(-120%);
}
@media (hover: hover) {
  :is(.auth-submit, .lp-cta):hover:not(:disabled)::after { transform: translateX(120%); transition: transform 0.9s var(--ease); }
}
.auth-submit:disabled { opacity: 1; cursor: default; }
.auth-submit.busy { opacity: 0.82; }
.auth-submit.busy span::before {
  content: ""; display: inline-block; width: 15px; height: 15px; margin-right: 10px; vertical-align: -2px;
  border-radius: 50%; border: 2px solid currentColor; border-right-color: transparent;
  animation: lqSpin 0.7s linear infinite;
}
.auth-submit.ok { background: var(--ok); color: #fff; }
.auth-submit.ok svg { width: 24px; height: 24px; animation: lqPop 0.5s var(--spring) both; }
.auth-card .auth-foot { font-size: 12.5px; line-height: 1.45; }
.auth-card .auth-lang, .auth-x {
  position: absolute; top: 18px; right: 18px; z-index: 1;
  height: 36px; border: 0; border-radius: 999px;
  background: rgba(var(--ink-rgb), 0.07); color: var(--ink-2);
  box-shadow: inset 0 0 0 0.5px var(--glass-edge);
  transition: background 0.2s, color 0.2s, transform 0.35s var(--spring);
}
.auth-x { width: 36px; display: grid; place-items: center; cursor: pointer; }
.auth-x svg { width: 16px; height: 16px; }
:is(.auth-lang, .auth-x):hover { background: rgba(var(--ink-rgb), 0.12); color: var(--ink); }
:is(.auth-lang, .auth-x):active { transform: scale(0.92); }
/* accesso riuscito: la schermata resta ferma dov'era e si dissolve sopra il sito (js/auth.js leave) */
.auth-leaving { position: fixed !important; left: 0; right: 0; z-index: 1200; pointer-events: none; animation: lqLeave 0.52s ease 0.1s both; }
.auth-leaving .auth-card { scale: 1.04; transition: scale 0.6s var(--ease) !important; }
@keyframes lqLeave { to { opacity: 0; } }

/* lingua */
.lang-gate {
  padding: calc(24px + var(--sat, 0px)) 16px calc(24px + var(--sab, 0px));
  background: var(--veil);
  -webkit-backdrop-filter: blur(10px) saturate(1.2); backdrop-filter: blur(10px) saturate(1.2);
  animation: lqFade 0.3s ease; /* senza «both»: finita l'entrata la scheda torna a sfocare quello che c'è sotto */
  transition: opacity 0.26s ease;
}
.lang-gate.lang-first { background: var(--app); -webkit-backdrop-filter: none; backdrop-filter: none; animation: none; }
.lang-gate.out { opacity: 0; pointer-events: none; }
.lang-gate.out .lang-card { scale: 0.97; transition: scale 0.26s ease; }
.lang-card { width: min(460px, 100%); padding: 34px 28px 26px; }
.lang-list { gap: 10px; }
.lang-opt {
  position: relative; min-height: 64px; padding: 12px 16px;
  border: 0; border-radius: 18px;
  background: rgba(var(--ink-rgb), 0.05);
  box-shadow: inset 0 0 0 0.5px var(--card-edge);
  transition: transform 0.4s var(--spring), background 0.2s, box-shadow 0.25s;
  animation: lqRise 0.5s var(--spring-soft) both;
}
.lang-opt:nth-child(2) { animation-delay: 0.22s; }
.lang-opt:nth-child(3) { animation-delay: 0.25s; }
.lang-opt:nth-child(4) { animation-delay: 0.28s; }
.lang-opt:nth-child(5) { animation-delay: 0.31s; }
.lang-opt:nth-child(n+6) { animation-delay: 0.34s; }
.lang-opt:first-child { animation-delay: 0.19s; }
@media (hover: hover) { .lang-opt:hover { background: rgba(var(--ink-rgb), 0.09); transform: translateY(-2px); } }
.lang-opt:active { transform: scale(0.96); transition-duration: 0.12s; }
.lang-opt.on { background: rgba(var(--ink-rgb), 0.12); box-shadow: inset 0 0 0 1px rgba(var(--ink-rgb), 0.3), var(--sh-1); }
.lang-opt.on::after {
  content: ""; position: absolute; top: 14px; right: 14px;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--solid); box-shadow: 0 0 0 4px rgba(var(--ink-rgb), 0.12);
}

/* termini e privacy al primo accesso */
.lg-gate { padding: calc(20px + var(--sat, 0px)) 16px calc(20px + var(--sab, 0px)); transition: opacity 0.35s ease; }
.lg-gate-card {
  width: min(640px, 100%); padding: 32px 30px 26px;
  opacity: 0; transform: translateY(26px) scale(0.95);
  transition: transform 0.8s var(--spring-soft), opacity 0.4s ease;
}
.lg-gate.in .lg-gate-card { opacity: 1; transform: none; }
.lg-gate.out { opacity: 0; pointer-events: none; transition-duration: 0.45s; }
.lg-gate.out .lg-gate-card { opacity: 0; transform: scale(1.04); transition: transform 0.45s var(--ease), opacity 0.35s ease; }
.lg-gate-card .lg-ask-ic { margin-bottom: 14px; }
.lg-gate-card h2 { margin: 0 0 10px; font-size: clamp(26px, 4vw, 32px); }
.lg-gate-card > p { font-size: 15.5px; line-height: 1.6; }
.lg-gate-card :is(.lg-cookie, .lg-more, .lg-check) {
  border: 0; border-radius: 18px;
  background: rgba(var(--ink-rgb), 0.045);
  box-shadow: inset 0 0 0 0.5px var(--card-edge);
}
.lg-gate-card .lg-cookie { margin: 16px 0; padding: 14px 16px; }
.lg-gate-card .lg-more { margin: 10px 0; overflow: hidden; transition: background 0.2s; }
.lg-gate-card .lg-more:hover { background: rgba(var(--ink-rgb), 0.07); }
.lg-gate-card .lg-more summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 16px; }
.lg-gate-card .lg-more summary::after {
  content: ""; float: none; flex: none; width: 7px; height: 7px; margin-right: 4px;
  border: solid var(--ink-3); border-width: 0 1.8px 1.8px 0;
  transform: rotate(-45deg); transition: transform 0.4s var(--spring);
}
.lg-gate-card .lg-more[open] summary::after { transform: rotate(45deg); }
.lg-gate-card .lg-more .lg-text { border-top: 0.5px solid var(--card-edge); padding: 6px 16px 14px; }
.lg-gate-card .lg-check { margin: 10px 0; padding: 13px 14px; gap: 12px; line-height: 1.45; transition: background 0.25s, box-shadow 0.25s; }
.lg-gate-card .lg-check:has(input:checked) { background: rgba(var(--ink-rgb), 0.085); box-shadow: inset 0 0 0 0.5px var(--glass-edge); }
/* casella di vetro: si riempie e la spunta salta dentro con una molla */
.lg-check input {
  -webkit-appearance: none; appearance: none;
  margin: 0; width: 22px; height: 22px; flex: none;
  display: grid; place-items: center;
  border-radius: 7px;
  background: rgba(var(--ink-rgb), 0.06);
  box-shadow: inset 0 0 0 1.5px rgba(var(--ink-rgb), 0.28);
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s, transform 0.35s var(--spring);
}
.lg-check input::after {
  content: ""; width: 6px; height: 11px; margin-top: -2px;
  border: solid var(--on-solid); border-width: 0 2.4px 2.4px 0;
  transform: rotate(45deg) scale(0);
  transition: transform 0.4s var(--spring);
}
.lg-check input:checked { background: var(--solid); box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18); }
.lg-check input:checked::after { transform: rotate(45deg) scale(1); }
.lg-check input:active { transform: scale(0.86); }
.lg-check input:focus-visible { outline: 2px solid var(--ink-3); outline-offset: 2px; }
.lg-gate-card .lg-actions { margin-top: 20px; }
.lg-gate-card .lg-actions .btn { height: 46px; padding: 0 22px; }
.lg-gate-card .lg-actions .btn-primary { transition: transform 0.45s var(--spring), opacity 0.25s, box-shadow 0.3s; }
.lg-gate-card .lg-actions .btn-primary:disabled { opacity: 0.35; transform: scale(0.96); }
/* richiesta di consenso per un servizio esterno */
.lg-ask .lg-facts { border-radius: 16px; background: rgba(var(--ink-rgb), 0.045); box-shadow: inset 0 0 0 0.5px var(--card-edge); }

/* ---------- meno calore: animazioni ferme fuori dallo schermo, vetro più leggero sul telefono ---------- */
.anim-off, .anim-off * { animation-play-state: paused !important; }
@media (max-width: 760px) { :root { --blur: saturate(1.5) blur(12px); } }

/* ---------- chi preferisce meno movimento o meno trasparenza ---------- */
@media (prefers-reduced-motion: reduce) {
  .view.active, ::view-transition-new(root) { animation-duration: 0.01s !important; }
  html.booting .main { transform: none; }
  .lq::before, .lq::after, :is(.auth-card, .lang-card, .lg-gate-card), :is(.auth-card, .lang-card, .lg-gate-card) > *,
  :is(.auth-card, .lang-card, .lg-gate-card)::before, .lang-opt, .auth-leaving { animation: none !important; }
  .lg-gate-card, .lg-gate.out .lg-gate-card { transform: none; transition: opacity 0.2s; }
}
@media (prefers-reduced-transparency: reduce) {
  .sidebar, .topbar, .tabbar, .tb-more, .ui-menu, .toast, .privacy-pill, .mv-pill, .pk, .nb-modal,
  .auth-card, .lang-card, .lg-gate-card {
    -webkit-backdrop-filter: none !important; backdrop-filter: none !important;
    background: var(--raised) !important;
  }
}

/* ==========================================================================
   Vista a tutto schermo (html.focus-mode, Fisica.layout in js/app.js)
   Computer e iPad di lato: il menu laterale esce a sinistra con una molla e il foglio
   si allarga; il mouse sul bordo sinistro lo mostra sopra la pagina (html.focus-peek).
   Telefono e iPad in verticale (menu a cassetto): si toglie la barra in basso.
   La sola classe sulla radice basta, per qualunque pagina (anche Codice).
   ========================================================================== */
.side-btn, .focus-fab { display: none; }
.side-btn svg, .focus-fab svg { width: 20px; height: 20px; }
.side-ic-arrow { transform-box: fill-box; transform-origin: center; transition: transform 0.5s var(--spring); }
html.focus-mode .side-ic-arrow { transform: scaleX(-1); }
@media (min-width: 981px) {
  .topbar .side-btn {
    display: grid; place-items: center; flex: none;
    width: 36px; height: 36px; margin-left: -10px; padding: 0;
    border: 0; border-radius: 999px; background: transparent; color: var(--ink-2); cursor: pointer;
    transition: background 0.2s, color 0.2s, transform 0.35s var(--spring);
  }
  .topbar .side-btn:hover { background: rgba(var(--ink-rgb), 0.08); color: var(--ink); }
  .topbar .side-btn:active { transform: scale(0.9); }
  .sidebar { transition: opacity 0.4s ease, transform 0.6s var(--spring-soft), box-shadow 0.3s; }
  .main { transition: opacity 0.55s ease, transform 0.7s var(--spring-soft), margin-left 0.6s var(--spring-soft), padding-left 0.6s var(--spring-soft); }
  html.focus-mode .sidebar { transform: translateX(calc(-100% - 28px - var(--sal, 0px))); opacity: 0; pointer-events: none; }
  html.focus-mode .main { margin-left: 0; padding-left: calc(10px + var(--sal, 0px)); }
  html.focus-mode .topbar .side-btn { margin-left: -8px; }
  /* sbirciata: il menu sopra la pagina, con l'ombra di un foglio (z 78: sopra Codice a tutto
     schermo, .cd-app.full a 75, che a pari livello lo copriva) */
  html.focus-mode.focus-peek .sidebar {
    transform: none; opacity: 1; pointer-events: auto; z-index: 78;
    background: linear-gradient(180deg, var(--glass-spec) -40%, transparent 30%), var(--glass-2);
    box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-3);
  }
  /* nota aperta o pagina senza barra in alto: il bottone per tornare indietro sta in basso */
  html.focus-mode:is(.nb-open) .focus-fab { display: grid; }
}
@media (max-width: 980px) {
  html.focus-mode.has-tabbar .tabbar { transform: translateY(calc(100% + 40px)); opacity: 0; pointer-events: none; }
  html.focus-mode.has-tabbar .content { padding-bottom: calc(72px + var(--sab, 0px)); }
  html.focus-mode.has-tabbar .toast { bottom: calc(24px + var(--sab, 0px)); }
  html.focus-mode.has-tabbar:not(.tb-hide) .focus-fab { display: grid; }
}
.focus-fab {
  position: fixed; z-index: 61;
  left: calc(14px + var(--sal, 0px)); bottom: calc(14px + var(--sab, 0px));
  width: 46px; height: 46px; place-items: center; padding: 0;
  border: 0; border-radius: 999px; cursor: pointer;
  background: linear-gradient(180deg, var(--glass-spec) -60%, transparent 55%), var(--glass);
  -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur);
  color: var(--ink);
  box-shadow: inset 0 0 0 0.5px var(--glass-edge), var(--sh-2);
  /* backwards, non both: finita l'entrata la trasformazione torna libera e :active la rimpicciolisce */
  animation: fabIn 0.5s var(--spring) backwards;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.35s var(--spring);
}
.focus-fab:active { transform: scale(0.9); }
@keyframes fabIn { from { opacity: 0; transform: scale(0.6); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .sidebar, .main, .side-ic-arrow { transition-duration: 0.01s !important; }
  .focus-fab { animation: none; }
}
@media print { .side-btn, .focus-fab { display: none !important; } }

/* ==========================================================================
   Schermi bassi e finestre strane
   ========================================================================== */
/* computer con finestra bassa (1280×600, 1600×500…): il piede del menu non schiaccia più
   l'elenco delle sezioni; sotto i 680 px scorre tutto il menu, come sul telefono di lato */
@media (min-width: 981px) and (max-height: 820px) {
  .sidebar-foot { padding-top: 6px; padding-bottom: 8px; }
  .sidebar-foot .foot-row { padding-top: 4px; padding-bottom: 4px; }
  .install-row { padding: 6px 10px; margin-bottom: 4px; }
  .install-row small { display: none; }
  .brand { padding-top: 16px; padding-bottom: 10px; }
}
@media (min-width: 981px) and (max-height: 680px) {
  .sidebar { overflow-y: auto; overscroll-behavior: contain; scrollbar-width: none; }
  .sidebar::-webkit-scrollbar { display: none; }
  .sidebar .nav { flex: none; overflow: visible; }
  .sidebar-foot { margin-top: auto; }
}
/* telefono di lato e finestre basse: barre più sottili, così resta spazio per la pagina */
@media (max-width: 980px) and (max-height: 500px) {
  .topbar { height: calc(46px + var(--sat, 0px)); }
  .content { padding-top: 20px; }
}
@media (max-height: 500px) and (orientation: landscape) {
  html.has-tabbar .tabbar { height: 48px; padding: 4px; border-radius: 24px; max-width: 600px; bottom: max(6px, calc(var(--sab, 0px) - 14px)); }
  html.has-tabbar .tabbar.min { transform: translateY(2px) scale(0.94); }
  .tb-item { flex-direction: row; gap: 6px; border-radius: 20px; }
  .tb-ind { top: 4px; bottom: 4px; border-radius: 20px; }
  .tb-ic { width: 22px; height: 22px; }
  .tb-ic svg { width: 20px; height: 20px; }
  .tb-l { font-size: 12px; }
  html.has-tabbar .content { padding-bottom: calc(76px + var(--sab, 0px)); }
  html.has-tabbar .toast { bottom: calc(62px + var(--sab, 0px)); }
  html.has-tabbar:not(.tb-hide) .privacy-pill { bottom: calc(62px + var(--sab, 0px)); }
}
/* iPhone SE e telefoni stretti: le etichette della barra in basso stanno intere */
@media (max-width: 360px) {
  html.has-tabbar .tabbar { left: calc(8px + var(--sal, 0px)); right: calc(8px + var(--sar, 0px)); padding: 5px; }
  .tb-l { font-size: 9.5px; letter-spacing: -0.01em; }
}
/* avviso «nuova versione» sopra la barra in basso */
html.has-tabbar:not(.tb-hide) .update-toast { bottom: calc(84px + var(--sab, 0px)); }

/* ==========================================================================
   Come un'app: installato (html.pwa, theme-init.js), dentro le app o sul telefono
   ========================================================================== */
/* i comandi non si selezionano tenendo premuto o trascinando, come nelle app */
:is(.sidebar, .topbar, .tabbar, .tb-more, .focus-fab, .seg, .chip, .btn, .tb-item, .nav-item, .ui-menu button) {
  -webkit-user-select: none; user-select: none;
}
:is(.sidebar, .topbar, .tb-more) :is(input, textarea) { -webkit-user-select: text; user-select: text; }
:is(.tabbar, .tb-more, .sidebar, .topbar) a { -webkit-touch-callout: none; -webkit-user-drag: none; }
/* app installata: niente «tira per ricaricare» né rimbalzo della pagina intera (Android, iPhone) */
html.pwa, html.pwa body { overscroll-behavior-y: none; }
/* computer, app installata con la barra del titolo nascosta (window-controls-overlay):
   tutto scende sotto la zona dei pulsanti della finestra, che si trascina come un titolo */
@media (display-mode: window-controls-overlay) {
  :root { --sat: env(titlebar-area-height, 0px); }
  body::before { display: block !important; background: transparent !important; -webkit-app-region: drag; app-region: drag; z-index: 80; }
}

/* ==========================================================================
   Ritocchi della cornice: fuoco da tastiera, menu laterale, bottoni
   ========================================================================== */
/* anello del fuoco: in css/style.css (con la tinta del sistema). Qui, caricato per ultimo, vinceva
   sugli outline: none dei campi e il testo della nota si scriveva dentro un riquadro blu */
.nav-item:focus-visible, .tb-item:focus-visible, .side-btn:focus-visible, .focus-fab:focus-visible { outline-offset: -2px; }
/* voce attiva: anche l'icona prende l'inchiostro pieno */
.nav-item.active .nav-ic:not(.nav-subj) { color: var(--ink); }
/* la barra di scorrimento del menu compare solo passandoci sopra */
@media (hover: hover) {
  .sidebar .nav { scrollbar-color: transparent transparent; transition: scrollbar-color 0.3s; }
  .sidebar:hover .nav { scrollbar-color: var(--fill-3) transparent; }
  /* il velo dei bottoni sotto il mouse è in css/style.css (.btn:hover) */
}
/* briciole in alto: il separatore più leggero, la pagina corrente in evidenza */
.crumbs { letter-spacing: -0.01em; }
.crumbs .sep { opacity: 0.7; }
/* piede del menu: «Scarica l'app» come un bottone di vetro */
.install-row { border: 0; background: rgba(var(--ink-rgb), 0.05); box-shadow: inset 0 0 0 0.5px var(--card-edge); border-radius: 14px; }
.install-row:hover { background: rgba(var(--ink-rgb), 0.09); }