/*
 * mod_design_12_vers_1.0 — Apertura editoriale a due pannelli.
 * CSS autonomo: tutti i selettori sono circoscritti a .design-12.
 * Nessuna dipendenza da Bootstrap, Helix, jQuery o librerie slideshow.
 * I color picker del tab Aspetto impostano le variabili su ogni istanza.
 * Per un override singolo usare #design-12-module-ID oppure l'ancora assegnata.
 * I testi, i marchi e la collana sono contenuti; non sono nomi nel codice.
 */

/* 1. Variabili e contenitore: il modulo rispetta lo spazio della posizione Helix. */
.design-12 {
  --design-left-bg: #f8f7f2;
  --design-right-bg: #eeece3;
  --design-eyebrow: #383833;
  --design-headline: #20201d;
  --design-accent: #a22b24;
  --design-intro: #57574f;
  --design-primary-bg: #a22b24;
  --design-primary-text: #fff;
  --design-secondary-text: #35352e;
  --design-publisher: #3b3b34;
  --design-collection-tagline: #53534b;
  --design-collection-title: #24241f;
  --design-author: #494941;
  --design-book-title: #292924;
  --design-footer: #5a5a51;
  --design-controls: #3b3b34;
  --design-width: 1600px;
  --design-min-height: 600px;
  --design-cover-height: 365px;
  --design-cover-rotation: -9deg;
  --design-radius: 0px;
  --design-fade: 600ms;
  --design-display-font: Georgia, serif;
  width: 100%;
  margin: 0;
  padding: 0;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--design-intro);
  scroll-margin-top: 100px;
}
.design-12, .design-12 * { box-sizing: border-box; }
.design-12 [hidden] { display: none !important; }
.design-12 .dg-wrap { max-width: var(--design-width); width: 100%; margin: 0 auto; container: design12 / inline-size; }
.design-12 p { margin: 0; }
.design-12 :is(a, button):focus-visible { outline: 3px solid var(--design-accent); outline-offset: 4px; }
.design-12 :is(.dg-headline, .dg-book-title):focus-visible { outline: 2px solid var(--design-accent); outline-offset: 4px; }

/* 2. Griglia stabile e dissolvenza: l'altezza segue la slide più lunga. */
.design-12 .dg-slides { display: grid; }
.design-12 .dg-card {
  grid-area: 1 / 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  min-height: var(--design-min-height);
  border-radius: var(--design-radius);
  overflow: hidden;
  overflow-wrap: anywhere;
}
/* In assenza di JavaScript è visibile solo la prima slide. */
.design-12:not(.is-enhanced) .dg-card:not(.is-active) { display: none; }
.design-12.is-enhanced .dg-card {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  z-index: 1;
  transition: opacity var(--design-fade) ease, visibility 0s linear var(--design-fade);
}
.design-12.is-enhanced .dg-card.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  z-index: 2;
  transition: opacity var(--design-fade) ease, visibility 0s;
}

/* 3. Pannello sinistro: titolo serif, corsivo a contrasto, introduzione e firma. */
.design-12 .dg-opening {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: clamp(32px, 3.45cqw, 55px) clamp(28px, 6.8cqw, 109px) 28px;
  background: var(--design-left-bg);
}
.design-12 .dg-eyebrow { color: var(--design-eyebrow); font-size: clamp(10px, .72cqw, 12px); line-height: 1.5; letter-spacing: .09em; text-transform: uppercase; margin-bottom: 24px; }
.design-12 .dg-headline {
  font-family: var(--design-display-font);
  font-weight: 400;
  font-size: clamp(38px, 3.85cqw, 64px);
  line-height: 1.06;
  letter-spacing: -.035em;
  color: var(--design-headline);
  margin: 0 0 25px;
}
.design-12 .dg-headline :is(em, i) { color: var(--design-accent); font-style: italic; }
.design-12 .dg-intro { color: var(--design-intro); font-size: clamp(14px, 1.08cqw, 18px); line-height: 1.65; margin-bottom: 26px; }
.design-12 .dg-publisher { color: var(--design-publisher); font-size: clamp(10px, .74cqw, 12px); line-height: 1.65; margin-top: auto; padding-top: 50px; }
.design-12 .dg-publisher strong { text-transform: uppercase; letter-spacing: .07em; font-size: .96em; margin-right: 8px; }

/* 4. Pulsanti: etichetta e link indipendenti in ogni slide, testo sempre adattabile. */
.design-12 .dg-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px 26px; }
.design-12 .dg-button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; max-width: 100%; padding: 13px 20px; border: 1px solid transparent; border-radius: 3px; font-family: inherit; font-size: clamp(12px, .88cqw, 14px); font-weight: 600; line-height: 1.35; text-align: center; text-decoration: none; transition: filter .2s; }
.design-12 .dg-button-primary { background: var(--design-primary-bg); color: var(--design-primary-text); }
.design-12 .dg-button-secondary { background: transparent; color: var(--design-secondary-text); padding-left: 0; padding-right: 0; text-decoration: underline; text-underline-offset: 5px; text-decoration-thickness: 1px; }
.design-12 .dg-button:hover { filter: brightness(.9); }

/* 5. Pannello destro: marchio della collana, copertina inclinata e autore. */
.design-12 .dg-presentation { display: flex; flex-direction: column; min-width: 0; padding: 38px clamp(30px, 3.8cqw, 61px) 28px; background: var(--design-right-bg); }
.design-12 .dg-collection-tagline { color: var(--design-collection-tagline); font-size: clamp(11px, .8cqw, 13px); line-height: 1.5; text-align: right; margin-bottom: 28px; }
.design-12 .dg-feature { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: 12px; flex: 1; min-width: 0; }
.design-12 .dg-catalogue { display: flex; flex-direction: column; min-width: 0; padding: 7px 0 30px; }
.design-12 .dg-collection-title { font-family: var(--design-display-font); font-size: clamp(48px, 5.35cqw, 90px); font-weight: 400; line-height: .99; letter-spacing: -.055em; color: var(--design-collection-title); }
.design-12 .dg-collection-title span { display: block; }
.design-12 .dg-collection-title span + span { font-style: italic; font-size: .97em; }
.design-12 .dg-book-meta { margin-top: auto; padding-top: 42px; }
.design-12 .dg-author { color: var(--design-author); font-size: clamp(11px, .86cqw, 14px); line-height: 1.5; margin-bottom: 9px; }
.design-12 .dg-book-title { color: var(--design-book-title); font-family: inherit; font-weight: 700; font-size: clamp(14px, 1.12cqw, 18px); line-height: 1.4; letter-spacing: 0; text-transform: uppercase; margin: 0; }
.design-12 .dg-cover { display: flex; align-items: center; justify-content: center; min-width: 0; padding: 18px 0 36px; }
.design-12 .dg-cover img { display: block; width: 100%; max-width: 255px; height: auto; max-height: var(--design-cover-height); aspect-ratio: 7 / 10; object-fit: contain; transform: rotate(var(--design-cover-rotation)); filter: drop-shadow(12px 18px 10px #0003); }
.design-12 .dg-cover-placeholder { display: flex; align-items: center; justify-content: center; width: 100%; max-width: 255px; aspect-ratio: 7 / 10; background: #142930; color: #fff; font-size: 20px; text-align: center; padding: 24px; transform: rotate(var(--design-cover-rotation)); }
.design-12 .dg-presentation-footer { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-top: 28px; }
.design-12 .dg-footer-caption { color: var(--design-footer); font-size: clamp(12px, .88cqw, 14px); line-height: 1.6; }
.design-12 .dg-counter { flex-shrink: 0; color: var(--design-controls); font-size: 12px; letter-spacing: .06em; }
.design-12 .dg-counter strong { font-weight: 700; }

/* 6. Controlli fuori dal riquadro: frecce, indicatori scorrevoli e pausa. */
.design-12 .dg-controls { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 10px; padding: 14px 8px; }
.design-12 .dg-control { display: inline-flex; align-items: center; justify-content: center; min-width: 44px; min-height: 44px; padding: 8px 12px; border: 1px solid currentColor; border-radius: 3px; background: var(--design-left-bg); color: var(--design-controls); font: inherit; font-size: 14px; cursor: pointer; }
.design-12 .dg-dots { position: relative; display: flex; align-items: center; gap: 4px; flex-wrap: nowrap; min-width: 0; max-width: min(50%, 560px); overflow-x: auto; }
.design-12 .dg-dot { display: inline-flex; align-items: center; justify-content: center; flex: 0 0 32px; width: 32px; height: 44px; padding: 0; border: 0; background: transparent; color: var(--design-controls); cursor: pointer; }
.design-12 .dg-dot::before { content: ''; width: 9px; height: 9px; border: 1px solid currentColor; border-radius: 50%; }
.design-12 .dg-dot[aria-current="true"]::before { background: currentColor; }
.design-12 .dg-visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }

/* 7. Una posizione stretta o uno schermo mobile fa impilare i due pannelli. */
@container design12 (max-width: 1100px) {
  .design-12 .dg-card { grid-template-columns: minmax(0, 1fr); min-height: 0; }
  .design-12 .dg-opening { padding: 36px clamp(24px, 6cqw, 66px) 28px; }
  .design-12 .dg-headline { font-size: clamp(36px, 5.8cqw, 62px); }
  .design-12 .dg-eyebrow { font-size: 11px; margin-bottom: 20px; }
  .design-12 .dg-intro { font-size: 16px; }
  .design-12 .dg-button { font-size: 14px; }
  .design-12 .dg-publisher { font-size: 11px; padding-top: 32px; }
  .design-12 .dg-presentation { padding: 28px clamp(24px, 6cqw, 66px); }
  .design-12 .dg-feature { grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 28px; min-height: 340px; }
  .design-12 .dg-collection-title { font-size: clamp(44px, 8cqw, 90px); }
  .design-12 .dg-collection-tagline { font-size: 12px; }
  .design-12 .dg-author { font-size: 13px; }
  .design-12 .dg-book-title { font-size: 16px; }
  .design-12 .dg-footer-caption { font-size: 13px; }
}
@container design12 (max-width: 520px) {
  .design-12 .dg-headline { font-size: clamp(32px, 8.2cqw, 42px); }
  .design-12 .dg-intro { font-size: 15px; }
  .design-12 .dg-actions { align-items: stretch; flex-direction: column; gap: 8px; }
  .design-12 .dg-button { width: 100%; }
  .design-12 .dg-feature { grid-template-columns: minmax(0, 1fr); gap: 16px; min-height: 0; }
  .design-12 .dg-catalogue { padding-bottom: 0; }
  .design-12 .dg-collection-title { font-size: clamp(52px, 14cqw, 72px); }
  .design-12 .dg-book-meta { padding-top: 26px; }
  .design-12 .dg-cover { padding: 18px 0 28px; }
  .design-12 .dg-cover img, .design-12 .dg-cover-placeholder { max-width: 210px; }
  .design-12 .dg-collection-tagline { text-align: left; }
  .design-12 .dg-presentation-footer { margin-top: 6px; }
}
/* Fallback viewport per browser senza container queries. */
@supports not (container-type: inline-size) {
  @media (max-width: 1100px) {
    .design-12 .dg-card { grid-template-columns: minmax(0, 1fr); min-height: 0; }
    .design-12 .dg-opening, .design-12 .dg-presentation { padding: 32px 24px; }
    .design-12 .dg-headline { font-size: 42px; }
    .design-12 .dg-collection-title { font-size: 64px; }
  }
  @media (max-width: 520px) {
    .design-12 .dg-feature { grid-template-columns: minmax(0, 1fr); }
    .design-12 .dg-headline { font-size: 34px; }
    .design-12 .dg-cover img { max-width: 210px; }
    .design-12 .dg-actions { flex-direction: column; align-items: stretch; }
  }
}

/* 8. Preferenze di movimento: fade disattivato e autoplay fermato anche dal JS. */
@media (prefers-reduced-motion: reduce) {
  .design-12.is-enhanced .dg-card, .design-12.is-enhanced .dg-card.is-active, .design-12 .dg-button { transition: none; }
}