/* =========================================================
   Fondazione Cuore Domani — Homepage
   Single, organized stylesheet (mobile-first).
   Sezioni: 1) Variabili 2) Reset 3) Tipografia 4) Utility
   5) Bottoni 6) Header/Nav 7) Hero 8) Sezioni 9) Footer
   10) Animazioni 11) Responsive 12) Reduced motion
========================================================== */

/* ------------------------------------------------------
   1. VARIABILI (custom properties)
------------------------------------------------------ */
:root {
  /* Palette dal PDF */
  --color-red: #FF0032;
  --color-red-dark: #d60029;
  --color-indigo: #2C2D45;
  --color-indigo-700: #23243a;
  --color-alabaster: #E7E7E7;
  --color-apricot: #F9C784;
  --color-grey: #6A7B76;
  --color-white: #FFFFFF;
  --color-text: #171722;
  --color-muted: #5b5c6b;

  /* Superfici */
  --surface: #ffffff;
  --surface-alt: #f6f6f4;
  --surface-tint: #fdf1f3;   /* rosso tenuo */
  --border: #e7e7e7;

  /* Tipografia */
  --font-primary: "Quicksand", "Trebuchet MS", system-ui, sans-serif;
  --font-display: "Space Grotesk", "Quicksand", system-ui, sans-serif;
  --font-body: "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;

  /* Raggi */
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 28px;
  --radius-pill: 999px;

  /* Ombre discrete */
  --shadow-sm: 0 2px 8px rgba(23, 23, 34, 0.05);
  --shadow: 0 12px 32px rgba(23, 23, 34, 0.08);
  --shadow-red: 0 12px 28px rgba(255, 0, 50, 0.22);

  /* Layout */
  --container: 1280px;
  --gutter: clamp(1.15rem, 4vw, 2.5rem);
  --section-y: clamp(3.5rem, 8vw, 7rem);
  --header-h: 76px;

  /* Transizioni */
  --t-fast: 160ms ease;
  --t: 260ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ------------------------------------------------------
   2. RESET
------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
:focus-visible {
  outline: 3px solid var(--color-indigo);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Scroll offset per ancore sotto l'header sticky */
:target { scroll-margin-top: calc(var(--header-h) + 16px); }

/* Lenis (smooth scroll) — stili minimi consigliati dalla libreria */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }
.lenis.lenis-smooth iframe { pointer-events: none; }

/* ------------------------------------------------------
   3. TIPOGRAFIA
------------------------------------------------------ */
h1, h2, h3 { font-family: var(--font-display); line-height: 1.08; font-weight: 700; letter-spacing: -0.02em; }
p { text-wrap: pretty; }

.section-heading {
  font-size: clamp(1.85rem, 1.1rem + 3vw, 3rem);
  color: var(--color-indigo);
}
.section-eyebrow {
  font-family: var(--font-primary);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-red);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.9rem;
}
.eyebrow-mark {
  width: 26px; height: 10px;
  background:
    radial-gradient(circle 3px at 3px 5px, var(--color-red) 96%, transparent) 0 0/26px 10px,
    linear-gradient(var(--color-red), var(--color-red)) 8px 0/4px 10px no-repeat,
    linear-gradient(var(--color-red), var(--color-red)) 15px 2px/4px 6px no-repeat,
    radial-gradient(circle 2.5px at 24px 5px, var(--color-red) 96%, transparent) 0 0/26px 10px;
  border-radius: var(--radius-pill);
}
.section-intro { color: var(--color-muted); font-size: 1.05rem; max-width: 56ch; }

/* ------------------------------------------------------
   4. UTILITY
------------------------------------------------------ */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-y); }
.section-head { max-width: 62ch; margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head--split {
  display: flex; flex-wrap: wrap; gap: 1.25rem 2rem;
  align-items: flex-end; justify-content: space-between; max-width: none;
}

.skip-link {
  position: absolute; left: 12px; top: -60px;
  background: var(--color-indigo); color: #fff;
  padding: 0.7rem 1.1rem; border-radius: var(--radius-sm);
  z-index: 200; transition: top var(--t);
}
.skip-link:focus { top: 12px; }

.rounded-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.rounded-figure img { width: 100%; height: 100%; object-fit: cover; }

.tag {
  display: inline-block;
  font-family: var(--font-primary);
  font-weight: 700; font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-red);
  background: var(--surface-tint);
  padding: 0.35rem 0.7rem; border-radius: var(--radius-pill);
  margin-bottom: 0.9rem;
}
.tag--muted { color: var(--color-indigo); background: var(--color-alabaster); }

.link-more, .news-card__link {
  font-family: var(--font-primary); font-weight: 700; font-size: 0.92rem;
  color: var(--color-red); display: inline-flex; align-items: center; gap: 0.4rem;
}
.link-more span, .news-card__link span { transition: transform var(--t-fast); }
.link-more:hover span, a:hover > .news-card__link span { transform: translateX(4px); }

/* ------------------------------------------------------
   5. BOTTONI
------------------------------------------------------ */
.btn {
  --btn-bg: var(--color-red);
  --btn-fg: #fff;
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  font-family: var(--font-primary); font-weight: 700; line-height: 1;
  padding: 0.85rem 1.5rem; border-radius: var(--radius-pill);
  background: var(--btn-bg); color: var(--btn-fg);
  transition: transform var(--t-fast), background var(--t-fast), box-shadow var(--t-fast), color var(--t-fast);
  min-height: 44px;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn--primary { box-shadow: var(--shadow-red); }
.btn--primary:hover { background: var(--color-red-dark); }
.btn--sm { padding: 0.6rem 1.1rem; font-size: 0.9rem; }
.btn--lg { padding: 1rem 1.9rem; font-size: 1.05rem; }
.btn--block { display: flex; width: 100%; }
.btn--outline {
  background: transparent; color: var(--color-indigo);
  box-shadow: inset 0 0 0 2px var(--color-indigo);
}
.btn--outline:hover { background: var(--color-indigo); color: #fff; }
.btn--white { background: #fff; color: var(--color-red); }
.btn--white:hover { background: var(--color-alabaster); }
.btn--ghost-white {
  background: transparent; color: #fff; box-shadow: inset 0 0 0 2px rgba(255,255,255,0.6);
}
.btn--ghost-white:hover { background: rgba(255,255,255,0.12); }
.btn--text {
  background: transparent; color: var(--color-indigo); padding-inline: 0.4rem;
  box-shadow: none;
}
.btn--text span { transition: transform var(--t-fast); }
.btn--text:hover { transform: none; color: var(--color-red); }
.btn--text:hover span { transform: translateX(4px); }

/* ------------------------------------------------------
   6. HEADER & NAVIGAZIONE
------------------------------------------------------ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.9);
  backdrop-filter: saturate(1.4) blur(8px);
  transition: box-shadow var(--t), background var(--t);
}
.site-header.is-stuck { box-shadow: var(--shadow-sm); background: rgba(255,255,255,0.96); }
.site-header__inner {
  display: flex; align-items: center; gap: 1.5rem;
  min-height: var(--header-h);
}

.site-logo { display: inline-flex; align-items: center; }
.site-logo__img { display: block; width: auto; height: 50px; }
.site-logo--drawer .site-logo__img { height: 28px; }
.site-logo--footer .site-logo__img { height: 34px; }

.main-navigation { margin-inline-start: auto; }
.main-navigation__list { display: none; }
.site-header__actions { display: flex; align-items: center; gap: 0.75rem; margin-inline-start: auto; }

/* Dropdown (desktop) */
.has-dropdown { position: relative; }
.main-navigation__list > li > a {
  font-family: var(--font-primary); font-weight: 600; color: var(--color-indigo);
  padding: 0.5rem 0.15rem; display: inline-flex; align-items: center; gap: 0.3rem;
  position: relative;
}
.main-navigation__list > li > a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; height: 2px; width: 0;
  background: var(--color-red); transition: width var(--t);
}
.main-navigation__list > li > a:hover::after,
.main-navigation__list > li > a:focus-visible::after { width: 100%; }
.has-dropdown > a[data-dropdown-toggle]::before {
  content: ""; width: 7px; height: 7px; order: 2;
  border-right: 2px solid currentColor; border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-2px); margin-left: 0.15rem;
  transition: transform var(--t-fast);
}
.dropdown {
  position: absolute; top: calc(100% + 10px); left: -0.75rem;
  min-width: 250px; background: #fff; border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 0.6rem; border: 1px solid var(--border);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity var(--t), transform var(--t), visibility var(--t);
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown,
.dropdown[data-open="true"] {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.dropdown a {
  display: block; padding: 0.6rem 0.8rem; border-radius: var(--radius-sm);
  font-family: var(--font-primary); font-weight: 500; color: var(--color-indigo);
  transition: background var(--t-fast), color var(--t-fast);
}
.dropdown a:hover { background: var(--surface-tint); color: var(--color-red); }

/* Hamburger */
.nav-toggle {
  width: 46px; height: 46px; border-radius: var(--radius-sm);
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-toggle__bar { width: 22px; height: 2.5px; background: var(--color-indigo); border-radius: 2px; transition: transform var(--t), opacity var(--t); }

/* Drawer mobile */
.mobile-drawer { position: fixed; inset: 0; z-index: 150; }
.mobile-drawer[hidden] { display: none; }
.mobile-drawer__backdrop {
  position: absolute; inset: 0; width: 100%; height: 100%;
  background: rgba(23,23,34,0.5); opacity: 0; transition: opacity var(--t);
}
.mobile-drawer__panel {
  position: absolute; top: 0; right: 0; height: 100%;
  width: min(88vw, 380px); background: #fff; padding: 1.25rem 1.35rem 2rem;
  display: flex; flex-direction: column; gap: 1.25rem;
  transform: translateX(100%); transition: transform var(--t);
  box-shadow: -20px 0 60px rgba(23,23,34,0.18);
  overflow-y: auto;
}
.mobile-drawer.is-open .mobile-drawer__panel { transform: translateX(0); }
.mobile-drawer.is-open .mobile-drawer__backdrop { opacity: 1; }
.mobile-drawer__head { display: flex; align-items: center; justify-content: space-between; }
.nav-close { width: 44px; height: 44px; border-radius: var(--radius-sm); color: var(--color-indigo); display: grid; place-items: center; }
.nav-close svg { width: 24px; height: 24px; }
.mobile-nav ul { display: flex; flex-direction: column; }
.mobile-nav a {
  display: block; padding: 0.9rem 0.4rem; font-family: var(--font-display); font-weight: 700;
  font-size: 1.35rem; color: var(--color-indigo); border-bottom: 1px solid var(--border);
}
.mobile-nav a:hover { color: var(--color-red); }
.mobile-drawer .btn--block { margin-top: auto; }

/* ------------------------------------------------------
   7. HERO
------------------------------------------------------ */
.hero {
  position: relative; overflow: hidden;
  padding-block: clamp(2rem, 5vw, 3.5rem) clamp(3rem, 6vw, 5rem);
  background:
    radial-gradient(60% 60% at 85% 10%, rgba(249,199,132,0.18), transparent 70%),
    radial-gradient(50% 50% at 10% 90%, rgba(255,0,50,0.06), transparent 70%),
    var(--surface);
}
.hero__inner {
  display: grid; gap: clamp(2rem, 5vw, 3.5rem);
  align-items: center;
}
.hero__eyebrow {
  font-family: var(--font-primary); font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.16em; font-size: 0.78rem; color: var(--color-grey); margin-bottom: 1rem;
}
.hero__title {
  font-size: clamp(2.5rem, 1.2rem + 6.5vw, 4.6rem);
  color: var(--color-red); text-wrap: balance;
}
.hero__lead {
  margin-top: 1.25rem; font-size: clamp(1.05rem, 1rem + 0.4vw, 1.25rem);
  color: var(--color-muted); max-width: 42ch;
}
.hero__actions { margin-top: 1.9rem; display: flex; flex-wrap: wrap; align-items: center; gap: 0.8rem 1.2rem; }

/* Heartbeat scene: un'unica immagine (sala operatoria) ritagliata da 4 forme.
   La drop-shadow segue le forme del clip, dando profondità a ciascuna finestra. */
.heartbeat-scene {
  display: block; width: 100%; height: auto;
  filter: drop-shadow(0 22px 40px rgba(23, 23, 34, 0.16));
  overflow: visible;
}

.hero__pulse { position: absolute; left: 0; right: 0; bottom: 8px; width: 100%; height: 46px; opacity: 0.5; }

/* ------------------------------------------------------
   8. SEZIONI
------------------------------------------------------ */

/* 2. Intro */
.intro__inner { display: grid; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.intro__lead { font-size: 1.2rem; font-weight: 500; color: var(--color-indigo); margin: 0.5rem 0 1rem; font-family: var(--font-primary); }
.intro__text p { color: var(--color-muted); }
.intro__points { margin: 1.4rem 0 1.8rem; display: grid; gap: 0.8rem; }
.intro__points li { position: relative; padding-left: 2rem; color: var(--color-text); }
.intro__points li::before {
  content: ""; position: absolute; left: 0; top: 0.5em;
  width: 12px; height: 12px; border-radius: var(--radius-pill);
  background: var(--color-red); box-shadow: 0 0 0 4px var(--surface-tint);
}
.intro__media { position: relative; }
.intro__media .rounded-figure { aspect-ratio: 5/4; }
.intro__badge {
  position: absolute; left: -8px; bottom: -18px;
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: #fff; color: var(--color-red); font-family: var(--font-primary); font-weight: 700;
  padding: 0.7rem 1rem; border-radius: var(--radius-pill); box-shadow: var(--shadow);
}
.intro__badge-mark { width: 18px; height: auto; }

/* 3. Cosa facciamo */
.cosa-facciamo { background: var(--surface-alt); }
.feature-grid { display: grid; gap: clamp(1rem, 2vw, 1.4rem); }
.feature-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 1.6rem 1.5rem; display: flex; flex-direction: column; gap: 0.7rem;
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.feature-card__icon {
  width: 54px; height: 54px; border-radius: var(--radius); display: grid; place-items: center;
  background: var(--surface-tint); color: var(--color-red); margin-bottom: 0.3rem;
}
.feature-card__icon svg { width: 28px; height: 28px; }
.feature-card__title { font-size: 1.2rem; color: var(--color-indigo); }
.feature-card p { color: var(--color-muted); font-size: 0.97rem; flex: 1; }
.feature-card .link-more { margin-top: 0.4rem; }

/* 4. Progetti */
.project-grid { display: grid; gap: clamp(1.2rem, 2.4vw, 1.8rem); }
.project-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform var(--t), box-shadow var(--t);
}
.project-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.project-card__media { display: block; aspect-ratio: 16/10; overflow: hidden; }
.project-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 500ms ease; }
.project-card:hover .project-card__media img { transform: scale(1.05); }
.project-card__body { padding: 1.4rem 1.5rem 1.6rem; display: flex; flex-direction: column; }
.project-card__title { font-size: 1.25rem; color: var(--color-indigo); margin-bottom: 0.6rem; }
.project-card__title a:hover { color: var(--color-red); }
.project-card__body p { color: var(--color-muted); font-size: 0.97rem; margin-bottom: 1rem; }
.project-card .link-more { margin-top: auto; }

/* 5. Impatto */
.impact { background: var(--color-indigo); color: #fff; }
.impact__inner { display: grid; gap: clamp(2rem, 4vw, 3.5rem); align-items: center; }
.impact__heading { color: #fff; text-wrap: balance; }
.impact__text p { color: rgba(255,255,255,0.82); margin-top: 1rem; max-width: 48ch; }
.impact__stats { display: grid; gap: 1rem; }
.stat {
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg); padding: 1.4rem 1.5rem;
}
.stat__value {
  display: block; font-family: var(--font-display); font-weight: 700;
  font-size: clamp(2.2rem, 1.2rem + 3vw, 3rem); color: var(--color-apricot); line-height: 1;
}
.stat__label { display: block; margin-top: 0.5rem; color: rgba(255,255,255,0.82); font-size: 0.95rem; }

/* 6. Storie */
.stories__inner { display: grid; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.stories__media { aspect-ratio: 4/3; }
.stories__text p { color: var(--color-muted); margin-top: 1rem; }
.stories__note { font-style: italic; color: var(--color-grey) !important; }
.stories__text .btn { margin-top: 1.6rem; }

/* 7. Support banner */
.support-banner { padding-block: var(--section-y); }
.support-banner__inner {
  position: relative; overflow: hidden;
  background:
    radial-gradient(80% 120% at 100% 0%, rgba(249,199,132,0.28), transparent 60%),
    linear-gradient(135deg, var(--color-red), #c30026);
  color: #fff; border-radius: clamp(var(--radius-lg), 3vw, 40px);
  padding: clamp(2.5rem, 5vw, 4.5rem);
}
.support-banner__pulse {
  position: absolute; inset: 0; width: 100%; height: 100%;
  color: rgba(255,255,255,0.16);
}
.support-banner__content { position: relative; max-width: 60ch; }
.support-banner__title { font-size: clamp(1.9rem, 1.1rem + 3vw, 3rem); color: #fff; text-wrap: balance; }
.support-banner__text { margin-top: 1rem; font-size: 1.1rem; color: rgba(255,255,255,0.92); }
.support-banner__actions { margin-top: 1.9rem; display: flex; flex-wrap: wrap; gap: 0.8rem 1rem; align-items: center; }
.support-banner__note { margin-top: 1.4rem; font-size: 0.92rem; color: rgba(255,255,255,0.82); }
.support-banner__note strong { color: #fff; }

/* 8. News */
.news-grid { display: grid; gap: clamp(1.2rem, 2.4vw, 1.8rem); }
.news-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; transition: transform var(--t), box-shadow var(--t);
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.news-card__body { padding: 1.5rem 1.5rem 1.6rem; }
.news-card__title { font-size: 1.2rem; color: var(--color-indigo); margin-bottom: 0.6rem; }
.news-card__title a:hover { color: var(--color-red); }
.news-card__body p { color: var(--color-muted); font-size: 0.96rem; margin-bottom: 1rem; }

/* 9. Contatti */
.contact { background: var(--surface-alt); }
.contact__inner { display: grid; gap: clamp(2rem, 4vw, 3.5rem); align-items: center; }
.contact__text p { color: var(--color-muted); margin: 0.5rem 0 1.8rem; max-width: 44ch; }
.contact__list { display: grid; gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.contact__list li { background: #fff; padding: 1.2rem 1.4rem; display: grid; gap: 0.25rem; }
.contact__label { font-family: var(--font-primary); font-weight: 700; font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-red); }
.contact__value { color: var(--color-indigo); font-size: 1.05rem; }
a.contact__value:hover { color: var(--color-red); }

/* ------------------------------------------------------
   9. FOOTER
------------------------------------------------------ */
.site-footer { background: var(--color-indigo); color: rgba(255,255,255,0.78); }
.site-footer__inner {
  display: grid; gap: 2.5rem 2rem;
  padding-block: clamp(3rem, 6vw, 4.5rem);
}
.site-footer__desc { margin: 1.1rem 0 1.4rem; max-width: 42ch; font-size: 0.95rem; }
.site-footer__title { font-family: var(--font-primary); font-size: 0.85rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-apricot); margin-bottom: 1rem; }
.site-footer__nav ul { display: grid; gap: 0.7rem; }
.site-footer__nav a { color: rgba(255,255,255,0.82); transition: color var(--t-fast); }
.site-footer__nav a:hover { color: #fff; }
.site-footer__contact address { font-style: normal; line-height: 1.9; margin-bottom: 1.2rem; }
.site-footer__contact a:hover { color: #fff; }
.social { display: flex; gap: 0.6rem; }
.social a {
  width: 42px; height: 42px; border-radius: var(--radius-pill);
  display: grid; place-items: center; color: #fff;
  background: rgba(255,255,255,0.08); transition: background var(--t-fast), transform var(--t-fast);
}
.social a:hover { background: var(--color-red); transform: translateY(-2px); }
.social svg { width: 20px; height: 20px; }

.site-footer__bottom { border-top: 1px solid rgba(255,255,255,0.12); }
.site-footer__bottom-inner {
  display: flex; flex-wrap: wrap; gap: 0.6rem 1.5rem; align-items: center; justify-content: space-between;
  padding-block: 1.4rem; font-size: 0.86rem;
}
.site-footer__legal { display: flex; flex-wrap: wrap; gap: 1.2rem; }
.site-footer__legal a:hover { color: #fff; }

/* ------------------------------------------------------
   10. ANIMAZIONI (reveal on-scroll)
------------------------------------------------------ */
[data-reveal], [data-reveal-group] > * {
  opacity: 0; transform: translateY(22px);
  transition: opacity 600ms ease, transform 600ms cubic-bezier(0.2, 0.7, 0.2, 1);
  will-change: opacity, transform;
}
[data-reveal].is-visible, [data-reveal-group].is-visible > * { opacity: 1; transform: none; }
[data-reveal-group].is-visible > *:nth-child(2) { transition-delay: 80ms; }
[data-reveal-group].is-visible > *:nth-child(3) { transition-delay: 160ms; }
[data-reveal-group].is-visible > *:nth-child(4) { transition-delay: 240ms; }
[data-reveal-group].is-visible > *:nth-child(5) { transition-delay: 320ms; }

/* Ingresso hero */
.hero__title, .hero__lead, .hero__actions, .hero__eyebrow { opacity: 0; transform: translateY(16px); animation: heroIn 700ms cubic-bezier(0.2,0.7,0.2,1) forwards; }
.hero__eyebrow { animation-delay: 60ms; }
.hero__title { animation-delay: 140ms; }
.hero__lead { animation-delay: 240ms; }
.hero__actions { animation-delay: 320ms; }
/* Entrata (una volta) + battito continuo della scena della hero.
   L'entrata è sull'<svg>, il battito sul gruppo interno: trasformazioni separate,
   così il clip (le finestre) resta fermo mentre l'immagine pulsa al suo interno. */
.heartbeat-scene { opacity: 0; transform: translateY(16px); animation: heroIn 800ms cubic-bezier(0.2,0.7,0.2,1) 200ms forwards; }
/* A riposo le forme sono ferme. Al passaggio del mouse (o :focus-within da tastiera)
   pulsano con un battito cardiaco delicato, leggermente sfalsato tra una forma e
   l'altra per un effetto a onda morbida. A trasformarsi sono le forme del clip. */
.hb-shape { transform-box: fill-box; transform-origin: center; }
.hero__media:hover .hb-shape,
.hero__media:focus-within .hb-shape { animation: hbBeat 1700ms ease-in-out infinite; }
.hero__media:hover .hb-shape--2, .hero__media:focus-within .hb-shape--2 { animation-delay: 90ms; }
.hero__media:hover .hb-shape--3, .hero__media:focus-within .hb-shape--3 { animation-delay: 180ms; }
.hero__media:hover .hb-shape--4, .hero__media:focus-within .hb-shape--4 { animation-delay: 270ms; }
.hero__pulse path {
  stroke-dasharray: 1400; stroke-dashoffset: 1400;
  animation: pulseDraw 1600ms ease-out 400ms forwards;
}
@keyframes heroIn { to { opacity: 1; transform: none; } }
@keyframes pulseDraw { to { stroke-dashoffset: 0; } }
/* Battito delicato (lub-dub) applicato solo all'hover — ampiezza contenuta */
@keyframes hbBeat {
  0%, 100% { transform: scale(1); }
  14%      { transform: scale(1.03); }   /* lub */
  28%      { transform: scale(1.006); }
  42%      { transform: scale(1.018); }  /* dub */
  58%      { transform: scale(1); }
}

/* ------------------------------------------------------
   11. RESPONSIVE (mobile-first breakpoints)
------------------------------------------------------ */
@media (min-width: 620px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .project-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .impact__stats { grid-template-columns: repeat(3, 1fr); }
  .contact__list { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .main-navigation__list { display: flex; align-items: center; gap: 1.6rem; }
  .site-header__actions { margin-inline-start: 0; }
  .main-navigation { margin-inline-start: auto; }

  .hero__inner { grid-template-columns: 1.05fr 0.95fr; }
  .hero__media { order: -1; }

  .intro__inner { grid-template-columns: 1fr 1fr; }
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
  .feature-card:nth-child(4) { grid-column: span 1; }
  .project-grid, .news-grid { grid-template-columns: repeat(3, 1fr); }
  .impact__inner { grid-template-columns: 1fr 1.1fr; }
  .stories__inner { grid-template-columns: 1fr 1fr; }
  .contact__inner { grid-template-columns: 0.9fr 1.1fr; }
  .contact__list { grid-template-columns: repeat(2, 1fr); }

  .site-footer__inner { grid-template-columns: 2fr 1fr 1fr 1.4fr; }
}

@media (min-width: 1100px) {
  .feature-grid { grid-template-columns: repeat(5, 1fr); }
}

/* Schermi molto ampi: evita che i contenuti si allarghino troppo */
@media (min-width: 1600px) {
  :root { --container: 1360px; }
}

/* ------------------------------------------------------
   12. PREFERS-REDUCED-MOTION
------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal], [data-reveal-group] > *,
  .hero__title, .hero__lead, .hero__actions, .hero__eyebrow, .heartbeat-scene {
    opacity: 1 !important; transform: none !important;
  }
  /* nessun battito delle forme quando l'utente preferisce meno movimento */
  .hero__media:hover .hb-shape, .hero__media:focus-within .hb-shape { animation: none !important; transform: none !important; }
  .hero__pulse path { stroke-dashoffset: 0 !important; }
  .btn:hover, .feature-card:hover, .project-card:hover, .news-card:hover { transform: none; }
}