/* Vox4D — vetrina. Un foglio solo, nessuno script, nessun font esterno: la
   pagina deve aprirsi su una connessione lenta prima che il pollice arrivi al
   pulsante di download. La base viene dalla vetrina di MyBook, coi colori
   dell'icona: verde acqua e ambra. */

:root {
  --inchiostro: #0b7f8a;
  --inchiostro-2: #075f68;
  --scintilla: #f0a830;
  --carta: #f4f9f9;
  --carta-2: #e6f1f2;
  --foglio: #ffffff;
  --testo: #13262a;
  --tenue: #4a5f63;
  --bordo: rgba(19, 38, 42, 0.12);
  --ombra: 0 30px 60px -30px rgba(7, 95, 104, 0.45);
  --serif: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --inchiostro: #5fd4df;
    --inchiostro-2: #36b7c4;
    --carta: #0d1618;
    --carta-2: #132023;
    --foglio: #172729;
    --testo: #e6f3f4;
    --tenue: #9bb3b7;
    --bordo: rgba(230, 243, 244, 0.12);
    --ombra: 0 30px 60px -30px rgba(0, 0, 0, 0.85);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--carta);
  color: var(--testo);
  font: 17px/1.65 var(--sans);
  -webkit-text-size-adjust: 100%;
}

a { color: var(--inchiostro); }

/* Nascosto sopra la pagina, non a sinistra: in arabo (rtl) un left negativo
   allarga la pagina di diecimila pixel e la fa scorrere di lato. */
.salta {
  position: absolute;
  inset-inline-start: 12px;
  top: -100px;
}
.salta:focus {
  top: 12px;
  z-index: 9;
  background: var(--inchiostro);
  color: #fff;
  padding: 8px 14px;
  border-radius: 8px;
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ------------------------------------------------------------------ barra */
.barra {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px clamp(16px, 4vw, 40px);
  border-bottom: 1px solid var(--bordo);
}

.marchio {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font: 700 21px/1 var(--serif);
  color: var(--testo);
  text-decoration: none;
}

.logo {
  display: inline-block;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: url("/icona-192.png") center / cover;
}

.lingue details { position: relative; }
.lingue summary {
  cursor: pointer;
  list-style: none;
  font: 600 13px/1 var(--sans);
  color: var(--tenue);
  border: 1px solid var(--bordo);
  border-radius: 8px;
  padding: 9px 12px;
}
.lingue summary::-webkit-details-marker { display: none; }
.lingue ul {
  position: absolute;
  inset-inline-end: 0;
  margin: 8px 0 0;
  padding: 6px;
  list-style: none;
  background: var(--foglio);
  border: 1px solid var(--bordo);
  border-radius: 12px;
  box-shadow: var(--ombra);
  min-width: 170px;
  max-height: 60vh;
  overflow: auto;
  z-index: 5;
}
.lingue a {
  display: block;
  padding: 7px 10px;
  border-radius: 6px;
  color: var(--testo);
  text-decoration: none;
  font-size: 14px;
}
.lingue a:hover, .lingue a:focus { background: var(--carta-2); }
.lingue a[aria-current] { color: var(--inchiostro); font-weight: 700; }

/* ------------------------------------------------------------------- eroe */
.eroe {
  max-width: 1100px;
  margin: 0 auto;
  padding: clamp(32px, 7vw, 84px) clamp(16px, 4vw, 40px) clamp(28px, 5vw, 60px);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}

.pillola {
  display: inline-block;
  margin: 0 0 18px;
  font: 600 12px/1 var(--sans);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #8a5a00;
  background: #fbe8c2;
  border-radius: 999px;
  padding: 8px 14px;
}
@media (prefers-color-scheme: dark) {
  .pillola { color: #ffd58a; background: rgba(240, 168, 48, 0.16); }
}

h1 {
  margin: 0;
  font: 700 clamp(34px, 5.6vw, 58px)/1.08 var(--serif);
  letter-spacing: -0.5px;
  text-wrap: balance;
}

.lede {
  margin: 18px 0 0;
  max-width: 60ch;
  color: var(--tenue);
  font-size: clamp(16px, 2.2vw, 19px);
}
.lede.piccolo { font-size: 16.5px; margin: 0 0 24px; }

.azioni {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 12px;
}

.btn {
  display: inline-block;
  min-height: 48px;
  padding: 13px 24px;
  border-radius: 12px;
  border: 1.5px solid var(--inchiostro);
  color: var(--inchiostro);
  background: transparent;
  font: 700 15px/1.4 var(--sans);
  text-decoration: none;
}
.btn:hover, .btn:focus { background: var(--carta-2); }
.btn.primario {
  background: var(--inchiostro);
  color: #fff;
  box-shadow: 0 12px 28px -12px rgba(11, 127, 138, 0.8);
}
.btn.primario:hover, .btn.primario:focus { background: var(--inchiostro-2); }
@media (prefers-color-scheme: dark) {
  .btn.primario { color: #062a2e; }
}
.btn.dona {
  border-color: var(--scintilla);
  color: #8a5a00;
  background: #fbe8c2;
}
@media (prefers-color-scheme: dark) {
  .btn.dona { color: #ffd58a; background: rgba(240, 168, 48, 0.14); }
}

.nota { color: var(--tenue); font-size: 14px; margin: 6px 0 0; }

.riquadro {
  max-width: 1000px;
  margin: 0 auto;
  padding: clamp(34px, 6vw, 64px) clamp(16px, 4vw, 40px);
  border-top: 1px solid var(--bordo);
}
.riquadro h2 {
  margin: 0 0 22px;
  font: 700 clamp(24px, 3.6vw, 34px)/1.2 var(--serif);
  text-wrap: balance;
}
.riquadro h2 + .lede { margin-top: -8px; }

.passi {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.passi li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--foglio);
  border: 1px solid var(--bordo);
  border-radius: 16px;
  padding: 18px;
}
.passi span {
  flex: 0 0 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--inchiostro);
  color: #fff;
  font: 700 15px/1 var(--sans);
}
@media (prefers-color-scheme: dark) {
  .passi span { color: #062a2e; }
}
.passi h3, .schede h3 { margin: 0 0 6px; font: 700 18px/1.3 var(--serif); }
.passi p, .schede p { margin: 0; color: var(--tenue); font-size: 15.5px; }

/* --------------------------------------------- stesso argomento, 5 livelli */

.schede {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.schede article {
  background: var(--foglio);
  border: 1px solid var(--bordo);
  border-radius: 16px;
  padding: 20px;
}

.spunte { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.spunte li {
  position: relative;
  padding-inline-start: 28px;
  color: var(--tenue);
}
.spunte li::before {
  content: "";
  position: absolute;
  inset-inline-start: 2px;
  top: 7px;
  width: 13px;
  height: 13px;
  background: var(--scintilla);
  clip-path: polygon(50% 0, 62% 38%, 100% 50%, 62% 62%, 50% 100%, 38% 62%, 0 50%, 38% 38%);
}


.servizi-nota { margin: 18px 0 0; color: var(--tenue); font-size: 15px; }

.sostieni { text-align: center; }
.sostieni .lede { margin-inline: auto; }
.sostieni .azioni { justify-content: center; }

#faq details {
  border-bottom: 1px solid var(--bordo);
  padding: 16px 0;
}
#faq summary {
  cursor: pointer;
  font: 700 17px/1.5 var(--serif);
}
#faq p { margin: 10px 0 0; color: var(--tenue); }

/* ------------------------------------------------------------------ piede */
.piede {
  border-top: 1px solid var(--bordo);
  padding: 32px clamp(16px, 4vw, 40px) 46px;
  text-align: center;
  color: var(--tenue);
}
.piede p { margin: 0 0 8px; font-size: 15px; }
.piede .minuto { font-size: 13px; }

.vuoto {
  min-height: 80vh;
  display: grid;
  place-content: center;
  justify-items: center;
  text-align: center;
  padding: 24px;
}
.vuoto h1 { font-size: 72px; }

::selection { background: rgba(240, 168, 48, 0.35); }

:focus-visible {
  outline: 3px solid var(--scintilla);
  outline-offset: 3px;
}

@media (max-width: 820px) {
  .eroe { grid-template-columns: 1fr; text-align: center; }
  .eroe .lede { margin-inline: auto; }
  .azioni { justify-content: center; }
}

/* ------------------------------------------------------ l'app in miniatura */
.telefono {
  justify-self: center;
  width: min(300px, 78vw);
  aspect-ratio: 9 / 18.5;
  border-radius: 40px;
  padding: 11px;
  background: #11191b;
  box-shadow: var(--ombra), inset 0 0 0 2px #2a3638;
}

/* Lo schermo e' il mirino della fotocamera: scuro in entrambi i temi. */
.schermo {
  position: relative;
  height: 100%;
  border-radius: 30px;
  overflow: hidden;
  background: radial-gradient(120% 80% at 50% 35%, #3b5559 0%, #1a2628 70%);
  display: flex;
  flex-direction: column;
  color: #fff;
  font: 600 12px/1 var(--sans);
}
.mirino {
  position: relative;
  flex: 1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.12) 1px, transparent 1px);
  background-size: 33.33% 33.33%;
}
.gps, .conta {
  position: absolute;
  top: 14px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.55);
}
.gps { inset-inline-start: 12px; direction: ltr; }
.gps::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-inline-end: 6px;
  border-radius: 50%;
  background: #5ee08a;
}
.conta { inset-inline-end: 12px; }
.oggetto {
  position: absolute;
  left: 50%;
  top: 44%;
  width: 34%;
  aspect-ratio: 1;
  transform: translate(-50%, -50%) rotate(45deg) skew(-10deg, -10deg);
  background: linear-gradient(135deg, #f4fbfb, #9fdde4);
  border-radius: 6px;
  box-shadow: 0 18px 30px -12px rgba(0, 0, 0, 0.6);
}
.orbita {
  position: absolute;
  left: 8%;
  right: 8%;
  top: 56%;
  height: 22%;
  border: 3px solid var(--scintilla);
  border-radius: 50%;
}
.orbita i {
  position: absolute;
  width: 11px;
  height: 11px;
  margin: -5.5px;
  border-radius: 50%;
  background: var(--scintilla);
  animation: scatto 4s infinite;
}
.orbita i:nth-child(1) { left: 50%; top: 100%; }
.orbita i:nth-child(2) { left: 85%; top: 85%; animation-delay: 0.5s; }
.orbita i:nth-child(3) { left: 100%; top: 50%; animation-delay: 1s; }
.orbita i:nth-child(4) { left: 85%; top: 15%; animation-delay: 1.5s; }
.orbita i:nth-child(5) { left: 50%; top: 0; animation-delay: 2s; }
.orbita i:nth-child(6) { left: 15%; top: 15%; animation-delay: 2.5s; }
.orbita i:nth-child(7) { left: 0; top: 50%; animation-delay: 3s; }
.orbita i:nth-child(8) { left: 15%; top: 85%; animation-delay: 3.5s; }
@keyframes scatto {
  0%, 80%, 100% { transform: scale(1); opacity: 0.75; }
  88% { transform: scale(1.8); opacity: 1; }
}
@media (prefers-reduced-motion: reduce) {
  .orbita i { animation: none; }
}
.modi {
  display: flex;
  justify-content: center;
  gap: 4px;
  padding: 12px;
  background: rgba(0, 0, 0, 0.35);
}
.modi span { padding: 7px 10px; border-radius: 999px; color: rgba(255, 255, 255, 0.75); }
.modi .attivo { background: #0b7f8a; color: #fff; }
.scatto {
  display: grid;
  place-items: center;
  padding: 12px 0 22px;
  background: rgba(0, 0, 0, 0.35);
}
.scatto span {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  border: 4px solid #fff;
  background: radial-gradient(circle, #ff5a5a 0 58%, transparent 60%);
}

/* ------------------------------------------------------ server */
.comando {
  margin: 0;
  padding: 16px 18px;
  overflow-x: auto;
  border-radius: 12px;
  background: #0f1d20;
  color: #d9f4f6;
  font: 15px/1.5 ui-monospace, "Cascadia Mono", Consolas, monospace;
  direction: ltr;
  text-align: left;
}

/* ------------------------------------------------------ ringraziamenti */
.crediti {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.crediti > div, .librerie {
  padding: 18px 20px;
  border-radius: 14px;
  background: var(--foglio);
  border: 1px solid var(--bordo);
}
.crediti h3 { margin: 0 0 8px; font: 700 16px/1.3 var(--sans); }
.crediti ul, .librerie ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; }
.crediti li, .librerie li { font-size: 15px; }
.crediti small, .librerie small { color: var(--tenue); }
.crediti .vuota { margin: 0; color: var(--tenue); font-size: 15px; }
.librerie { margin-top: 16px; }
.librerie summary { cursor: pointer; font-weight: 700; }
.librerie ul { margin-top: 12px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }

/* ------------------------------------------------------ token spesi */
.numeri {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px;
  margin: 0;
}
.numeri div {
  padding: 18px 20px;
  border-radius: 14px;
  background: var(--foglio);
  border: 1px solid var(--bordo);
}
.numeri dt { color: var(--tenue); font-size: 14px; }
.numeri dd {
  margin: 6px 0 0;
  font: 800 clamp(24px, 3.4vw, 32px)/1.1 var(--sans);
  color: var(--inchiostro);
  font-variant-numeric: tabular-nums;
}