/**
 * Pagine ebook (tema-ebook.php): hero con la copertina in 3D, descrizione e
 * form di download, altre guide. Si appoggia ai componenti delle pagine
 * interne (page-build): .pg-hero, .form, .field, .btn, .pg-library, .book.
 * Stesso linguaggio morbido della libreria: gocce che si allargano,
 * angoli che si arrotondano, rimbalzi leggeri.
 */

/* ---------- Hero ---------- */
.pg-hero--ebook { min-height: max(84svh, 600px); } /* come la testata degli articoli */
.pg-hero--ebook .pg-hero__media { filter: saturate(1.1); }
.pg-hero--ebook .crumbs { display: flex; flex-wrap: wrap; gap: 6px 10px; }
.ebk-hero { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 96px); align-items: center; flex: 1; }
.ebk-hero__copy { display: grid; gap: 24px; justify-items: start; align-self: end; }
.ebk-hero__copy .eyebrow { color: rgba(243, 239, 232, .75); }
.ebk-hero__sep { opacity: .5; margin-inline: 2px; }
.pg-hero--ebook .pg-hero__title { font-size: clamp(2.4rem, 4.6vw, 4.9rem); text-wrap: balance; }
.pg-hero--ebook .pg-hero__title.is-long { font-size: clamp(2rem, 3.6vw, 3.8rem); line-height: 1; }
.ebk-hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 22px; margin-top: 6px; }
.ebk-hero__meta { display: flex; flex-wrap: wrap; gap: 8px; font-size: 11.5px; }
.ebk-hero__meta span {
  display: inline-flex; align-items: center; height: 32px; padding: 0 14px; border-radius: 99px;
  border: 1px solid rgba(243, 239, 232, .2); color: rgba(243, 239, 232, .8);
  background: rgba(10, 6, 18, .25); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}

/* copertina: due gocce di luce che respirano dietro il libro */
.ebk-hero__stage { position: relative; display: grid; place-items: center; perspective: 900px; min-height: 420px; }
.ebk-hero__blob {
  position: absolute; width: 62%; aspect-ratio: 1; left: 12%; top: 14%; z-index: -1;
  background: radial-gradient(circle at 35% 35%, rgba(252, 106, 58, .85), rgba(252, 106, 58, 0) 68%);
  filter: blur(34px); opacity: .55;
  border-radius: 46% 54% 60% 40% / 45% 42% 58% 55%;
  animation: ebk-blob 12s ease-in-out infinite alternate;
}
.ebk-hero__blob--b {
  left: auto; right: 6%; top: 34%; width: 56%;
  background: radial-gradient(circle at 60% 40%, rgba(160, 62, 255, .9), rgba(98, 37, 157, 0) 70%);
  animation-duration: 15s; animation-direction: alternate-reverse; opacity: .6;
}
@keyframes ebk-blob {
  0% { transform: translate(0, 0) scale(1); border-radius: 46% 54% 60% 40% / 45% 42% 58% 55%; }
  50% { transform: translate(6%, -5%) scale(1.08); border-radius: 58% 42% 38% 62% / 55% 60% 40% 45%; }
  100% { transform: translate(-4%, 6%) scale(.96); border-radius: 40% 60% 55% 45% / 60% 40% 60% 40%; }
}
.ebk-hero__book { width: min(360px, 78%); will-change: transform; filter: drop-shadow(0 40px 50px rgba(0, 0, 0, .5)); }
.ebk-hero__book img {
  display: block; width: 100%; height: auto; border-radius: 10px 16px 16px 10px;
  animation: ebk-float 6s ease-in-out infinite;
}
@keyframes ebk-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* ---------- Download ---------- */
/* spazi come l'introduzione delle sottopagine (.pg-intro) */
.ebk-dl { position: relative; padding-block: clamp(64px, 7vw, 100px) clamp(32px, 4vw, 56px); }
.ebk-dl__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(40px, 7vw, 120px); align-items: center; }
.ebk-dl__copy { display: grid; gap: 28px; align-content: start; }
.ebk-dl__copy .section-head { margin-bottom: 0; } /* qui non segue un titolo: basta lo spazio della griglia */
.ebk-dl__text { display: grid; gap: 1em; font-size: clamp(1.15rem, 1.5vw, 1.45rem); line-height: 1.45; letter-spacing: -0.015em; text-wrap: pretty; }
.ebk-dl__points { display: grid; gap: 14px; margin-top: 8px; }
.ebk-dl__points li { display: flex; align-items: center; gap: 14px; font-size: 16px; color: var(--muted); }
.ebk-dl__tick {
  flex: none; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center;
  background: rgba(252, 106, 58, .12); color: var(--human);
}
.ebk-dl__tick svg { width: 13px; height: 13px; transform: rotate(90deg); }

/* riquadro del form: goccia di colore che respira nell'angolo */
.ebk-card {
  position: relative; isolation: isolate; overflow: hidden;
  border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--line);
  padding: clamp(28px, 3.4vw, 48px);
  box-shadow: 0 30px 60px -40px rgba(98, 37, 157, .35);
  transition: border-radius .9s cubic-bezier(.22, 1, .36, 1), box-shadow .9s cubic-bezier(.22, 1, .36, 1);
}
.ebk-card:focus-within { border-radius: 44px; box-shadow: 0 40px 80px -40px rgba(98, 37, 157, .5); }
.ebk-card__drop {
  position: absolute; z-index: -1; right: -18%; top: -26%; width: 70%; aspect-ratio: 1;
  background: radial-gradient(circle at 40% 40%, rgba(252, 106, 58, .22), rgba(160, 62, 255, .12) 55%, transparent 72%);
  filter: blur(10px); border-radius: 50% 42% 58% 46% / 48% 56% 44% 52%;
  animation: ebk-blob 14s ease-in-out infinite alternate;
  transition: transform 1.4s cubic-bezier(.22, 1, .36, 1);
}
.ebk-card.is-done .ebk-card__drop { transform: scale(3.4) translate(-10%, 10%); }

.ebk-form { background: none; border: 0; padding: 0; border-radius: 0; -webkit-backdrop-filter: none; backdrop-filter: none; gap: 16px; }
.ebk-form__title { font-size: clamp(2rem, 3.2vw, 2.9rem); line-height: 1; letter-spacing: -0.045em; font-weight: 560; }
.ebk-form__title .serif { font-size: 1.08em; letter-spacing: -0.02em; }
.ebk-form__text { color: var(--muted); font-size: 15.5px; line-height: 1.5; margin-bottom: 6px; max-width: 34em; }
.ebk-form .field input { border-bottom-color: rgba(10, 6, 18, .16); color: var(--ink); }
.ebk-form .field label { color: rgba(10, 6, 18, .5); }
.ebk-form .field input:focus ~ label, .ebk-form .field input:not(:placeholder-shown) ~ label { color: var(--brand); }
.ebk-form .field.is-invalid input { border-color: #d6453a; }
.ebk-form .field.is-invalid label { color: #c23a30; }
.ebk-form .consent { color: var(--muted); margin-top: 6px; }
.ebk-form .consent.is-invalid { color: #c23a30; }
.ebk-form .form__submit { margin-top: 8px; }
.ebk-form .form__status { color: #178a4c; }

/* dopo l'invio: il form si ritira, la guida compare con un piccolo rimbalzo */
.ebk-done {
  position: absolute; inset: clamp(28px, 3.4vw, 48px); display: grid; align-content: center; justify-items: start; gap: 18px;
  opacity: 0; visibility: hidden; transform: translateY(24px);
  transition: opacity .6s .15s, transform .9s .15s cubic-bezier(.34, 1.56, .64, 1), visibility 0s .75s;
}
/* !important: l'entrata del form è animata da GSAP con stili in linea */
.ebk-card.is-done .ebk-form { opacity: 0 !important; transform: translateY(-16px) scale(.98) !important; pointer-events: none; visibility: hidden; transition: opacity .4s, transform .6s cubic-bezier(.22, 1, .36, 1), visibility 0s .4s; }
.ebk-card.is-done .ebk-done { opacity: 1; visibility: visible; transform: none; transition: opacity .6s .25s, transform .9s .25s cubic-bezier(.34, 1.56, .64, 1), visibility 0s; }
.ebk-done__badge {
  width: 72px; height: 72px; border-radius: 50%; display: grid; place-items: center;
  background: var(--human); color: #fff; box-shadow: 0 0 0 10px rgba(252, 106, 58, .14), 0 0 0 22px rgba(252, 106, 58, .06);
  transform: scale(0); transition: transform .9s .35s cubic-bezier(.34, 1.56, .64, 1);
}
.ebk-done__badge svg { width: 26px; height: 26px; transform: rotate(90deg); }
.ebk-card.is-done .ebk-done__badge { transform: scale(1); }
.ebk-done__title { font-size: clamp(2.2rem, 3.6vw, 3.2rem); line-height: 1; letter-spacing: -0.045em; font-weight: 560; margin-top: 10px; }
.ebk-done__title .serif { font-size: 1.08em; letter-spacing: -0.02em; }
.ebk-done__text { color: var(--muted); font-size: 16px; line-height: 1.5; max-width: 30em; margin-bottom: 8px; }
.ebk-done__down svg { transform: rotate(90deg); }

/* ---------- Altre guide ---------- */
.ebk-related { padding-block: clamp(80px, 9vw, 120px); }
.ebk-related .pg-split-head { align-items: end; }

/* ---------- Tablet e smartphone ---------- */
@media (max-width: 900px) {
  .ebk-hero { grid-template-columns: 1fr; gap: 12px; }
  .ebk-hero__stage { order: -1; min-height: 0; padding-block: 12px 4px; }
  .ebk-hero__book { width: min(220px, 52%); }
  .ebk-dl__grid { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .ebk-dl { padding-block: 56px 40px; }
  .ebk-related { padding-block: 72px; }
  .ebk-hero__book { width: min(180px, 46%); }
}
@media (prefers-reduced-motion: reduce) {
  .ebk-hero__blob, .ebk-card__drop, .ebk-hero__book img { animation: none; }
}