/* ============================================================================
   DELTAQUATTRO S.r.l. — Design System Unificato
   Autore: Senior Frontend Developer / UI-UX Engineer
   Stile: "Quiet Luxury" — solidità bresciana, eleganza senza tempo.
   Stack: CSS3 puro (Custom Properties, Grid, Flexbox), nessuna dipendenza.
   ============================================================================ */

/* ----------------------------------------------------------------------------
   1. DESIGN TOKENS — Variabili globali
   ---------------------------------------------------------------------------- */
:root {
  /* Palette istituzionale */
  --color-primary:        #1A2228;   /* Deep Slate — sfondi scuri, testi istituzionali */
  --color-primary-soft:   #2A333B;   /* Charcoal Stone — card scure, bordi eleganti */
  --color-accent:         #A67C52;   /* Warm Bronze — accenti, bottoni, dettagli */
  --color-accent-hover:   #8C6741;   /* Bronzo più profondo — stato hover */
  --color-bg-light:       #F9F9F7;   /* Travertino — sfondo corpo pagina */
  --color-surface:        #FFFFFF;   /* Pure Silk — card e contenitori */
  --color-text:           #1A2228;   /* Testo principale */
  --color-text-muted:     #63707B;   /* Didascalie, note legali, breadcrumb */
  --color-border:         rgba(26, 34, 40, 0.10);
  --color-border-strong:  rgba(26, 34, 40, 0.18);
  --color-esg:            #4E6548;   /* Olive Green — indicatori sostenibilità */
  --color-on-dark:        #F4F2EE;   /* Testo su sfondi scuri */
  --color-on-dark-muted:  rgba(244, 242, 238, 0.68);

  /* Tipografia */
  --font-serif: 'Cormorant Garamond', 'Times New Roman', Georgia, serif;
  --font-sans:  'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Dimensioni fluide */
  --container: 1200px;
  --container-narrow: 900px;
  --header-h: 84px;

  /* Spaziature */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.75rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
  --space-2xl: 7.5rem;

  /* Raggi e ombre (rigore geometrico, ombre impercettibili) */
  --radius: 3px;
  --radius-sm: 2px;
  --shadow-soft: 0 1px 2px rgba(26, 34, 40, 0.04), 0 12px 32px -18px rgba(26, 34, 40, 0.18);
  --shadow-hover: 0 2px 6px rgba(26, 34, 40, 0.06), 0 26px 48px -24px rgba(26, 34, 40, 0.26);

  /* Transizioni */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --transition: 0.35s var(--ease);
}

/* ----------------------------------------------------------------------------
   2. RESET & BASE
   ---------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  font-weight: 400;
  color: var(--color-text);
  background-color: var(--color-bg-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.is-locked { overflow: hidden; }

h1, h2, h3, h4, h5 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.12;
  margin: 0 0 0.6em;
  color: var(--color-primary);
  letter-spacing: 0.005em;
}

h1 { font-size: clamp(2rem, 4.6vw, 3rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.25rem); font-weight: 500; }
h3 { font-size: clamp(1.2rem, 1.8vw, 1.4rem); font-family: var(--font-sans); font-weight: 600; letter-spacing: 0; }
h4 { font-size: 1.05rem; font-family: var(--font-sans); font-weight: 600; }

p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--color-accent-hover); }

img { max-width: 100%; height: auto; display: block; }
ul { margin: 0; padding: 0; list-style: none; }
strong { font-weight: 600; }
em { font-style: italic; }

::selection { background: var(--color-accent); color: #fff; }

/* Accessibilità: focus visibile */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  top: -100px; left: 16px;
  z-index: 2000;
  background: var(--color-accent);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  transition: top 0.25s var(--ease);
}
.skip-link:focus { top: 14px; color: #fff; }

/* ----------------------------------------------------------------------------
   3. LAYOUT & UTILITIES
   ---------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}
.container--narrow { max-width: var(--container-narrow); }

.section { padding-block: var(--space-xl); }
.section--lg { padding-block: var(--space-2xl); }
.section--tight { padding-block: var(--space-lg); }
.section--dark { background: var(--color-primary); color: var(--color-on-dark); }
.section--surface { background: var(--color-surface); }
.section--accent-soft { background: #F1EDE7; }

.section--dark h1,
.section--dark h2,
.section--dark h3 { color: #fff; }
.section--dark p { color: var(--color-on-dark-muted); }

.grid { display: grid; gap: var(--space-md); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.text-center { text-align: center; }
.mt-lg { margin-top: var(--space-lg); }
.mt-md { margin-top: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

/* Eyebrow / kicker di sezione */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: "";
  width: 32px; height: 1px;
  background: var(--color-accent);
  display: inline-block;
}
.eyebrow--center { justify-content: center; }
.eyebrow--center::after {
  content: "";
  width: 32px; height: 1px;
  background: var(--color-accent);
  display: inline-block;
}
.section--dark .eyebrow { color: var(--color-accent); }

.section-head { max-width: 720px; margin-bottom: var(--space-lg); }
.section-head--center { margin-inline: auto; text-align: center; }
.lead {
  font-size: 1.075rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}
.section--dark .lead { color: var(--color-on-dark-muted); }

.rule {
  width: 56px; height: 2px;
  background: var(--color-accent);
  border: 0; margin: 1.4rem 0;
}
.rule--center { margin-inline: auto; }

/* ----------------------------------------------------------------------------
   4. BOTTONI
   ---------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 30px;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; flex: none; }

.btn--primary { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }
.btn--primary:hover { background: var(--color-accent-hover); border-color: var(--color-accent-hover); color: #fff; transform: translateY(-1px); }

.btn--outline { background: transparent; color: var(--color-primary); border-color: var(--color-border-strong); }
.btn--outline:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); transform: translateY(-1px); }

.btn--ghost-light { background: transparent; color: #fff; border-color: rgba(255,255,255,0.45); }
.btn--ghost-light:hover { background: #fff; color: var(--color-primary); border-color: #fff; transform: translateY(-1px); }

.btn--block { width: 100%; }
.btn--sm { padding: 11px 20px; font-size: 0.74rem; }

/* Link con freccia */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.link-arrow svg { width: 15px; height: 15px; transition: transform var(--transition); }
.link-arrow:hover svg { transform: translateX(4px); }

/* ----------------------------------------------------------------------------
   5. HEADER & NAVIGAZIONE
   ---------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background-color var(--transition), box-shadow var(--transition), height var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(249, 249, 247, 0.94);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom-color: var(--color-border);
  box-shadow: 0 8px 30px -22px rgba(26, 34, 40, 0.4);
  height: 70px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  width: 100%;
}

/* Logo tipografico */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: 0.14em;
  font-size: 1.05rem;
  line-height: 1;
}
.brand:hover { color: #fff; }
.site-header.is-scrolled .brand { color: var(--color-primary); }
.site-header.is-scrolled .brand:hover { color: var(--color-primary); }
.brand__mark {
  width: 38px; height: 38px;
  flex: none;
  display: grid;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: var(--radius-sm);
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 600;
  line-height: 1;
  padding-bottom: 3px;
}
.brand__text { display: flex; flex-direction: column; }
.brand__name { font-size: 1.02rem; letter-spacing: 0.16em; }
.brand__sub {
  font-size: 0.52rem;
  font-weight: 500;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  opacity: 0.62;
  margin-top: 4px;
}

/* Nav desktop */
.nav { display: flex; align-items: center; gap: 4px; }
.nav__list { display: flex; align-items: center; gap: 2px; }
.nav__link {
  position: relative;
  display: block;
  padding: 10px 15px;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.86);
  transition: color var(--transition);
}
.site-header.is-scrolled .nav__link { color: var(--color-primary); }
.nav__link::after {
  content: "";
  position: absolute;
  left: 15px; right: 15px; bottom: 4px;
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.nav__link:hover { color: var(--color-accent); }
.nav__link:hover::after,
.nav__link.is-active::after { transform: scaleX(1); }
.nav__link.is-active { color: var(--color-accent); }

.header-actions { display: flex; align-items: center; gap: 16px; }

/* CTA header: chiara su hero trasparente, scura dopo lo scroll */
.site-header:not(.is-scrolled) .header-actions .btn--outline {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
}
.site-header:not(.is-scrolled) .header-actions .btn--outline:hover {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
}

/* Selettore lingua */
.lang { display: flex; align-items: center; gap: 6px; font-size: 0.72rem; letter-spacing: 0.08em; }
.lang__item { color: rgba(255,255,255,0.6); font-weight: 600; }
.site-header.is-scrolled .lang__item { color: var(--color-text-muted); }
.lang__item.is-active { color: var(--color-accent); }
.lang__sep { color: rgba(255,255,255,0.3); }
.site-header.is-scrolled .lang__sep { color: var(--color-border-strong); }

/* Burger mobile */
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: var(--radius);
  cursor: pointer;
  color: #fff;
  transition: border-color var(--transition), color var(--transition);
}
.site-header.is-scrolled .nav-toggle { border-color: var(--color-border-strong); color: var(--color-primary); }
.nav-toggle__box { position: relative; width: 20px; height: 14px; }
.nav-toggle__box span {
  position: absolute;
  left: 0; right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--transition), opacity var(--transition), top var(--transition);
}
.nav-toggle__box span:nth-child(1) { top: 0; }
.nav-toggle__box span:nth-child(2) { top: 6px; }
.nav-toggle__box span:nth-child(3) { top: 12px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(1) { top: 6px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(3) { top: 6px; transform: rotate(-45deg); }

/* Pannello mobile */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 990;
  background: var(--color-primary);
  padding: calc(var(--header-h) + 40px) 28px 40px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transform: translateY(-100%);
  visibility: hidden;
  transition: transform 0.45s var(--ease), visibility 0.45s;
  overflow-y: auto;
}
.mobile-nav.is-open { transform: translateY(0); visibility: visible; }
.mobile-nav__link {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  color: #fff;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.mobile-nav__link:hover, .mobile-nav__link.is-active { color: var(--color-accent); }
.mobile-nav__footer { margin-top: auto; padding-top: 32px; color: var(--color-on-dark-muted); font-size: 0.85rem; }
.mobile-nav__footer a { color: var(--color-on-dark-muted); }
.mobile-nav__footer a:hover { color: var(--color-accent); }

/* ----------------------------------------------------------------------------
   6. HERO
   ---------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  color: #fff;
  background: var(--color-primary);
  overflow: hidden;
}
.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__media img,
.hero__video {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero__media img { animation: heroZoom 22s var(--ease) forwards; }

/* Video di sfondo: sovrapposto al poster, senza controlli */
.hero__video {
  z-index: 1;
  border: 0;
  pointer-events: none;
}
.hero__poster { z-index: 0; }

/* Rispetto delle preferenze di movimento ridotto: niente video in autoplay */
@media (prefers-reduced-motion: reduce) {
  .hero__video { display: none; }
}
@keyframes heroZoom {
  from { transform: scale(1.08); }
  to { transform: scale(1); }
}
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(26,34,40,0.82) 0%, rgba(26,34,40,0.55) 45%, rgba(26,34,40,0.28) 100%),
    linear-gradient(180deg, rgba(26,34,40,0.45) 0%, rgba(26,34,40,0.1) 40%, rgba(26,34,40,0.65) 100%);
}
.hero .container { position: relative; z-index: 2; padding-block: 140px 90px; }
.hero__content { max-width: 760px; }
.hero h1 {
  color: #fff;
  font-size: clamp(2.2rem, 5.4vw, 3.6rem);
  line-height: 1.08;
  margin-bottom: 0.5em;
  font-weight: 600;
}
.hero__sub {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: rgba(255,255,255,0.82);
  max-width: 620px;
  line-height: 1.7;
  margin-bottom: 2.2rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 16px; }
.hero__scroll {
  position: absolute;
  bottom: 30px; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.7);
  font-size: 0.64rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}
.hero__scroll-line {
  width: 1px; height: 44px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.6), transparent);
  animation: scrollPulse 2.2s infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(0.7); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
}

/* Hero secondarie (pagine interne) */
.page-hero {
  position: relative;
  min-height: 62vh;
  display: flex;
  align-items: flex-end;
  padding-top: var(--header-h);
  color: #fff;
  background: var(--color-primary);
  overflow: hidden;
}
.page-hero--tall { min-height: 74vh; }
.page-hero__media { position: absolute; inset: 0; z-index: 0; }
.page-hero__media img,
.page-hero__video {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
}
.page-hero__video {
  z-index: 1;
  border: 0;
  pointer-events: none;
}
.page-hero__poster { z-index: 0; }
@media (prefers-reduced-motion: reduce) {
  .page-hero__video { display: none; }
}
.page-hero__overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(26,34,40,0.7) 0%, rgba(26,34,40,0.45) 40%, rgba(26,34,40,0.86) 100%);
}
.page-hero .container { position: relative; z-index: 2; padding-block: 64px 56px; }
.page-hero h1 { color: #fff; max-width: 900px; margin-bottom: 0.4em; }
.page-hero p { color: rgba(255,255,255,0.82); max-width: 640px; font-size: 1.05rem; margin: 0; }

/* Breadcrumb */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: 0.76rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 1.1rem;
  letter-spacing: 0.04em;
}
.breadcrumb a { color: rgba(255,255,255,0.65); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb span[aria-current] { color: var(--color-accent); }

/* ----------------------------------------------------------------------------
   7. CARD
   ---------------------------------------------------------------------------- */
.card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 34px 30px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-accent);
}
.card__icon {
  width: 52px; height: 52px;
  display: grid;
  place-items: center;
  color: var(--color-accent);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 22px;
  transition: background-color var(--transition), color var(--transition);
}
.card:hover .card__icon { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }
.card__icon svg { width: 24px; height: 24px; }
.card h3 { margin-bottom: 0.5em; }
.card p { color: var(--color-text-muted); font-size: 0.95rem; }
.card__index {
  position: absolute;
  top: 26px; right: 28px;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-border-strong);
}
.card__link { margin-top: auto; padding-top: 20px; }
.card--dark {
  background: var(--color-primary-soft);
  border-color: rgba(255,255,255,0.08);
}
.card--dark h3 { color: #fff; }
.card--dark p { color: var(--color-on-dark-muted); }

/* Feature / pilastro numerato */
.pillar {
  border-top: 1px solid var(--color-border);
  padding-top: 26px;
}
.pillar__num {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  color: var(--color-accent);
  line-height: 1;
  display: block;
  margin-bottom: 12px;
}
.pillar h3 { font-size: 1.05rem; margin-bottom: 0.4em; }
.pillar p { font-size: 0.92rem; color: var(--color-text-muted); }

/* ----------------------------------------------------------------------------
   8. SPLIT / MEDIA + TESTO
   ---------------------------------------------------------------------------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}
.split--reverse .split__media { order: 2; }
.split__media { position: relative; }
.split__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}
.split__media--portrait img { aspect-ratio: 3 / 4; }
.split__media::after {
  content: "";
  position: absolute;
  inset: auto -14px -14px auto;
  width: 42%; height: 42%;
  border-right: 1px solid var(--color-accent);
  border-bottom: 1px solid var(--color-accent);
  border-radius: 0 0 var(--radius) 0;
  z-index: -1;
}
.split__badge {
  position: absolute;
  left: -22px; bottom: 26px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 16px 22px;
  box-shadow: var(--shadow-soft);
}
.split__badge strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--color-primary);
  line-height: 1;
}
.split__badge span { font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-text-muted); }

/* Quote / manifesto */
.quote {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.4vw, 1.75rem);
  line-height: 1.45;
  color: var(--color-primary);
  font-style: italic;
  border-left: 3px solid var(--color-accent);
  padding-left: 26px;
  margin: 0 0 1.4rem;
}
.quote__author { font-size: 0.8rem; font-family: var(--font-sans); font-style: normal; letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-text-muted); }
.section--dark .quote { color: #fff; }

/* Check list */
.check-list { display: grid; gap: 12px; margin: 1.4rem 0 0; }
.check-list li {
  position: relative;
  padding-left: 30px;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 7px;
  width: 14px; height: 8px;
  border-left: 1.5px solid var(--color-accent);
  border-bottom: 1.5px solid var(--color-accent);
  transform: rotate(-45deg);
}
.section--dark .check-list li { color: var(--color-on-dark-muted); }

/* ----------------------------------------------------------------------------
   9. METRICS / MILESTONE
   ---------------------------------------------------------------------------- */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.metric {
  background: var(--color-surface);
  padding: 38px 26px;
  text-align: center;
}
.metric__value {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.4vw, 2.7rem);
  color: var(--color-primary);
  line-height: 1;
  display: block;
  margin-bottom: 10px;
}
.metric__value em { color: var(--color-accent); font-style: normal; }
.metric__label {
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.section--dark .metrics { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.1); }
.section--dark .metric { background: var(--color-primary-soft); }
.section--dark .metric__value { color: #fff; }
.section--dark .metric__label { color: var(--color-on-dark-muted); }

/* ----------------------------------------------------------------------------
   10. TIMELINE
   ---------------------------------------------------------------------------- */
.timeline { position: relative; margin-top: var(--space-lg); }
.timeline::before {
  content: "";
  position: absolute;
  left: 50%; top: 0; bottom: 0;
  width: 1px;
  background: var(--color-border-strong);
  transform: translateX(-50%);
}
.tl-item {
  position: relative;
  width: 50%;
  padding: 0 52px 46px 0;
}
.tl-item:nth-child(even) {
  margin-left: 50%;
  padding: 0 0 46px 52px;
}
.tl-item__dot {
  position: absolute;
  top: 6px; right: -7px;
  width: 13px; height: 13px;
  border-radius: 50%;
  background: var(--color-bg-light);
  border: 2px solid var(--color-accent);
  z-index: 2;
  transition: background-color var(--transition), transform var(--transition);
}
.tl-item:nth-child(even) .tl-item__dot { right: auto; left: -7px; }
.tl-item:hover .tl-item__dot { background: var(--color-accent); transform: scale(1.25); }
.tl-item__year {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 8px;
  display: block;
}
.tl-item__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}
.tl-item:hover .tl-item__card { box-shadow: var(--shadow-soft); border-color: var(--color-accent); }
.tl-item__card h3 { font-size: 1rem; margin-bottom: 0.35em; }
.tl-item__card p { font-size: 0.9rem; color: var(--color-text-muted); margin: 0; }

/* ----------------------------------------------------------------------------
   11. CTA BAND
   ---------------------------------------------------------------------------- */
.cta-band {
  position: relative;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius);
  padding: clamp(2.5rem, 5vw, 4.5rem);
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  right: -80px; top: -80px;
  width: 340px; height: 340px;
  border: 1px solid rgba(166,124,82,0.35);
  border-radius: 50%;
}
.cta-band::after {
  content: "";
  position: absolute;
  right: 40px; bottom: -140px;
  width: 240px; height: 240px;
  border: 1px solid rgba(166,124,82,0.2);
  border-radius: 50%;
}
.cta-band__inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.4fr auto; gap: var(--space-lg); align-items: center; }
.cta-band h2 { color: #fff; margin-bottom: 0.4em; }
.cta-band p { color: var(--color-on-dark-muted); margin: 0; max-width: 560px; }
.cta-band__actions { display: flex; flex-direction: column; gap: 14px; }
.cta-band__phone {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: #fff;
  letter-spacing: 0.02em;
}
.cta-band__phone:hover { color: var(--color-accent); }

/* ----------------------------------------------------------------------------
   12. FORM
   ---------------------------------------------------------------------------- */
.contact-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }

.info-block { margin-bottom: 26px; }
.info-block__label {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 6px;
  display: block;
}
.info-block__value { font-size: 1rem; color: var(--color-primary); line-height: 1.5; }
.info-block__value a { color: var(--color-primary); }
.info-block__value a:hover { color: var(--color-accent); }
.section--dark .info-block__value,
.section--dark .info-block__value a { color: var(--color-on-dark); }

.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: clamp(1.8rem, 4vw, 3rem);
  box-shadow: var(--shadow-soft);
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 0.8rem; font-weight: 600; letter-spacing: 0.03em; color: var(--color-primary); }
.field .req { color: var(--color-accent); }
.field input,
.field select,
.field textarea {
  font-family: var(--font-sans);
  font-size: 0.94rem;
  color: var(--color-text);
  background: var(--color-bg-light);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  transition: border-color var(--transition), box-shadow var(--transition), background-color var(--transition);
  width: 100%;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(166,124,82,0.14);
}
.field.has-error input,
.field.has-error select,
.field.has-error textarea { border-color: #B4463C; box-shadow: 0 0 0 3px rgba(180,70,60,0.12); }
.field__error { font-size: 0.76rem; color: #B4463C; min-height: 1em; }

.checkbox {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 0.84rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}
.checkbox input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--color-accent); flex: none; }
.checkbox a { color: var(--color-accent); text-decoration: underline; }

.form-note { font-size: 0.78rem; color: var(--color-text-muted); margin-top: 16px; }

.form-feedback {
  margin-top: 20px;
  padding: 14px 18px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  display: none;
}
.form-feedback.is-visible { display: block; }
.form-feedback.is-success { background: rgba(78,101,72,0.12); border: 1px solid rgba(78,101,72,0.4); color: #3B4E36; }
.form-feedback.is-error { background: rgba(180,70,60,0.1); border: 1px solid rgba(180,70,60,0.35); color: #8E352C; }

/* Honeypot anti-spam (nascosto agli utenti, visibile ai bot) */
.hp-field { position: absolute !important; left: -9999px !important; opacity: 0; height: 0; width: 0; overflow: hidden; }

/* ----------------------------------------------------------------------------
   13. MAPPA
   ---------------------------------------------------------------------------- */
.map-frame {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  line-height: 0;
}
.map-frame iframe { width: 100%; height: 420px; border: 0; display: block; filter: grayscale(0.35) contrast(1.02); }

/* ----------------------------------------------------------------------------
   13b. ACCORDION
   ---------------------------------------------------------------------------- */
.accordion { border-top: 1px solid var(--color-border); }
.accordion__item { border-bottom: 1px solid var(--color-border); }
.accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 4px;
  background: transparent;
  border: 0;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: color var(--transition);
}
.accordion__trigger:hover { color: var(--color-accent); }
.accordion__trigger .accordion__meta {
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-left: auto;
}
.accordion__icon {
  position: relative;
  width: 16px; height: 16px;
  flex: none;
}
.accordion__icon::before,
.accordion__icon::after {
  content: "";
  position: absolute;
  background: var(--color-accent);
  transition: transform var(--transition);
}
.accordion__icon::before { top: 7px; left: 0; width: 16px; height: 1.5px; }
.accordion__icon::after { left: 7px; top: 0; width: 1.5px; height: 16px; }
.accordion__item.is-open .accordion__icon::after { transform: scaleY(0); }
.accordion__panel {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.4s var(--ease);
}
.accordion__item.is-open .accordion__panel { max-height: 720px; }
.accordion__content { padding: 0 4px 26px; color: var(--color-text-muted); font-size: 0.94rem; }
.accordion__content ul { display: grid; gap: 10px; margin-top: 12px; }
.accordion__content li { position: relative; padding-left: 24px; }
.accordion__content li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 12px; height: 1px;
  background: var(--color-accent);
}

/* ----------------------------------------------------------------------------
   13c. TABS
   ---------------------------------------------------------------------------- */
.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-md);
}
.tabs__btn {
  appearance: none;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 14px 20px;
  margin-bottom: -1px;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}
.tabs__btn:hover { color: var(--color-primary); }
.tabs__btn.is-active { color: var(--color-accent); border-bottom-color: var(--color-accent); }
.tabs__panel { animation: fadeIn 0.4s var(--ease); }
.tabs__panel[hidden] { display: none; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* ----------------------------------------------------------------------------
   14. FOOTER
   ---------------------------------------------------------------------------- */
.site-footer {
  background: var(--color-primary);
  color: var(--color-on-dark-muted);
  padding-top: var(--space-xl);
  font-size: 0.9rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr 1.2fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .brand { color: #fff; margin-bottom: 18px; }
.footer-brand .brand:hover { color: #fff; }
.footer-brand p { color: var(--color-on-dark-muted); font-size: 0.88rem; max-width: 320px; }
.footer-col h4 {
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
}
.footer-col ul { display: grid; gap: 10px; }
.footer-col a { color: var(--color-on-dark-muted); font-size: 0.88rem; }
.footer-col a:hover { color: var(--color-accent); }
.footer-col address { font-style: normal; line-height: 1.7; font-size: 0.88rem; }
.footer-col address a { display: inline; }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  padding-block: 26px;
  font-size: 0.78rem;
  color: rgba(244,242,238,0.5);
}
.footer-bottom a { color: rgba(244,242,238,0.5); }
.footer-bottom a:hover { color: var(--color-accent); }
.footer-legal { display: flex; flex-wrap: wrap; gap: 8px 18px; }

/* ----------------------------------------------------------------------------
   15. ANIMAZIONI REVEAL
   ---------------------------------------------------------------------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}
[data-reveal].is-visible { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: 0.08s; }
[data-reveal][data-delay="2"] { transition-delay: 0.16s; }
[data-reveal][data-delay="3"] { transition-delay: 0.24s; }
[data-reveal][data-delay="4"] { transition-delay: 0.32s; }
[data-reveal][data-delay="5"] { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ----------------------------------------------------------------------------
   16. RESPONSIVE
   ---------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .nav__link { padding: 10px 11px; font-size: 0.79rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  :root { --header-h: 74px; }
  .nav, .header-actions .btn { display: none; }
  .nav-toggle { display: inline-flex; }
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }
  .split__media::after { display: none; }
  .split__badge { left: 16px; }
  .contact-grid { grid-template-columns: 1fr; }
  .cta-band__inner { grid-template-columns: 1fr; }
  .cta-band__actions { flex-direction: row; flex-wrap: wrap; align-items: center; }
  .timeline::before { left: 8px; }
  .tl-item, .tl-item:nth-child(even) {
    width: 100%;
    margin-left: 0;
    padding: 0 0 40px 38px;
  }
  .tl-item__dot, .tl-item:nth-child(even) .tl-item__dot { left: 2px; right: auto; }
}

@media (max-width: 620px) {
  .container { padding-inline: 18px; }
  .section { padding-block: 3.25rem; }
  .section--lg { padding-block: 4.5rem; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-md); }
  .footer-bottom { flex-direction: column; }
  .cta-band__actions { flex-direction: column; align-items: stretch; }
  .cta-band__actions .btn { width: 100%; }
  .card { padding: 28px 24px; }
}