/* KPI Advisory - foglio di stile unico
   Indice: 1 Token · 2 Font · 3 Base · 4 Layout · 5 Header e menu · 6 Hero
           7 Slide · 8 Servizi · 9 Contatti · 10 Footer · 11 Responsive */

/* 1. TOKEN ---------------------------------------------------------- */
:root {
  --c-brand: #82142d;
  --c-brand-dark: #6a1025;
  --c-grey: #434341;
  --c-ink: #2b2b2a;
  --c-line: #cfc9c3;
  --c-soft: #f4f2f0;
  --c-white: #ffffff;

  --font-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-sans: "Source Sans 3", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 5rem;

  --gutter: 1.25rem;
  --max: 80rem;
  --header-h: 5rem;
}

/* 2. FONT -----------------------------------------------------------
   Source Serif 4 e Source Sans 3 (Adobe, licenza SIL OFL), ospitati in
   locale in /fonts. In attesa del caricamento valgono i caratteri di
   sistema indicati nei token. */
@font-face { font-family: "Source Serif 4"; font-style: normal; font-weight: 400; font-display: swap; src: url("/fonts/source-serif-4-regular.woff2") format("woff2"); }
@font-face { font-family: "Source Serif 4"; font-style: normal; font-weight: 600; font-display: swap; src: url("/fonts/source-serif-4-semibold.woff2") format("woff2"); }
@font-face { font-family: "Source Serif 4"; font-style: italic; font-weight: 400; font-display: swap; src: url("/fonts/source-serif-4-italic.woff2") format("woff2"); }
@font-face { font-family: "Source Sans 3"; font-style: normal; font-weight: 400; font-display: swap; src: url("/fonts/source-sans-3-regular.woff2") format("woff2"); }
@font-face { font-family: "Source Sans 3"; font-style: normal; font-weight: 600; font-display: swap; src: url("/fonts/source-sans-3-semibold.woff2") format("woff2"); }

/* 3. BASE ------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--c-white);
  color: var(--c-ink);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
}
img, svg { max-width: 100%; height: auto; }
h1, h2, h3, p, ul, ol { margin-top: 0; }
a { color: var(--c-grey); text-decoration: none; }
a:hover { color: var(--c-brand); }
:focus-visible { outline: 3px solid var(--c-brand); outline-offset: 3px; }
.on-dark :focus-visible { outline-color: var(--c-white); }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: var(--space-2); top: -4rem; z-index: 100;
  background: var(--c-brand); color: var(--c-white); padding: var(--space-1) var(--space-2);
}
.skip-link:focus { top: var(--space-1); color: var(--c-white); }
.eyebrow {
  margin: 0 0 var(--space-2);
  font-size: 0.875rem; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase;
}
.link-line { border-bottom: 1px solid currentColor; }

/* 4. LAYOUT ---------------------------------------------------------- */
.container { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }
.site-header-slot { min-height: var(--header-h); }

/* 5. HEADER E MENU ---------------------------------------------------- */
.site-header { background: var(--c-white); position: relative; z-index: 20; }
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap;
  min-height: var(--header-h); padding-block: 0.75rem;
}
.brand { display: block; line-height: 0; }
.brand img { display: block; height: 3.25rem; width: auto; }

.nav-toggle {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: none; border: 1px solid var(--c-line); color: var(--c-ink);
  padding: 0.6rem 0.9rem; font: inherit; font-weight: 600; cursor: pointer; min-height: 2.75rem;
}
.nav-toggle__bars { display: inline-block; width: 1.25rem; height: 2px; background: currentColor; position: relative; }
.nav-toggle__bars::before, .nav-toggle__bars::after {
  content: ""; position: absolute; left: 0; width: 100%; height: 2px; background: currentColor;
}
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.site-nav { display: none; width: 100%; flex-basis: 100%; }
.site-header.is-open .site-nav { display: block; }
.site-nav ul { list-style: none; margin: 0; padding: 0; }
.site-nav a, .site-nav button {
  display: block; width: 100%; text-align: left; font: inherit; font-size: 0.9375rem; font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase; color: var(--c-grey);
  background: none; border: 0; border-bottom: 2px solid transparent; padding: 0.85rem 0; cursor: pointer;
}
.site-nav a:hover, .site-nav button:hover { color: var(--c-brand); }
.site-nav [aria-current="page"], .site-nav .is-current > button { color: var(--c-brand); }
.site-nav .sub-list { display: none; padding: 0 0 0.25rem var(--space-3); }
.site-nav .has-sub.is-open > .sub-list { display: block; }
.site-nav .sub-list a { text-transform: none; letter-spacing: 0; font-weight: 400; font-size: 1rem; padding: 0.55rem 0; }
.site-nav .sub-list a[aria-current="page"] { color: var(--c-brand); font-weight: 600; }
.has-sub > button::after { content: " \25BE"; }

/* Versione senza JavaScript: elenco semplice dei collegamenti */
.site-nav--static { display: block; }
.site-nav--static ul { display: flex; flex-wrap: wrap; gap: 0.25rem 1.5rem; }
.site-nav--static a { width: auto; padding: 0.5rem 0; }

/* 6. HERO ------------------------------------------------------------ */
.hero { background: var(--c-brand); color: var(--c-white); padding-block: var(--space-5); }
.hero h1 {
  margin: 0 0 var(--space-3); font-family: var(--font-serif); font-weight: 600;
  font-size: clamp(2.5rem, 7vw, 4.25rem); line-height: 1.06; color: var(--c-white);
}
.hero__lead {
  margin: 0; max-width: 40rem; font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.6vw, 1.5625rem); line-height: 1.5; color: var(--c-white);
}

/* 7. SLIDE ----------------------------------------------------------- */
.slider { background: var(--c-soft); padding-block: var(--space-5); }
.slider__list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-4); }
.slide__title { margin: 0 0 0.75rem; font-size: 0.875rem; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: var(--c-brand); }
.slide__text { margin: 0; font-family: var(--font-serif); font-style: italic; font-size: clamp(1.25rem, 2.6vw, 1.625rem); line-height: 1.45; color: var(--c-ink); text-wrap: balance; max-width: 46rem; }
.slider__controls { display: none; align-items: center; gap: var(--space-2); margin-top: var(--space-3); }
.slider.is-enhanced .slider__controls { display: flex; flex-wrap: wrap; }
/* Le 4 slide stanno nella stessa cella della griglia: l'altezza è quella della
   slide più alta e resta costante quando si cambia slide (nessun salto). */
.slider.is-enhanced .slider__list { gap: 0; }
.slider.is-enhanced .slide { grid-area: 1 / 1; visibility: hidden; }
.slider.is-enhanced .slide.is-active { visibility: visible; }
.slider__dot, .slider__pause {
  background: none; border: 0; border-bottom: 2px solid transparent; font: inherit; font-size: 0.875rem; font-weight: 600;
  color: var(--c-grey); cursor: pointer; padding: 0.6rem 0.4rem; min-width: 2.75rem; min-height: 2.75rem;
}
.slider__dot[aria-current="true"] { color: var(--c-brand); border-bottom-color: var(--c-brand); }
.slider__pause { margin-left: auto; text-decoration: underline; }

/* 8. SERVIZI --------------------------------------------------------- */
.services { padding-block: var(--space-6) var(--space-4); }
.services h2 { margin: 0 0 var(--space-4); font-family: var(--font-serif); font-weight: 600; font-size: clamp(1.75rem, 4vw, 2.25rem); }
.services__grid { display: grid; grid-template-columns: 1fr; column-gap: var(--space-5); }
.service { display: block; border-top: 1px solid var(--c-line); padding: var(--space-3) 0 var(--space-4); color: var(--c-grey); }
.service:hover { color: var(--c-grey); }
.service:hover .service__title { color: var(--c-brand); }
.service__num { font-family: var(--font-serif); font-style: italic; font-size: 2rem; line-height: 1; color: var(--c-brand); }
.service__title { margin: 0.5rem 0 0.75rem; font-size: 1rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--c-ink); }
.service p { margin: 0; }

/* 9. CONTATTI -------------------------------------------------------- */
.contact-block { background: var(--c-grey); color: var(--c-white); padding-block: var(--space-5); }
.contact-block__inner { display: flex; flex-wrap: wrap; gap: var(--space-4) var(--space-5); align-items: flex-end; justify-content: space-between; }
.contact-block h2 { margin: 0 0 var(--space-2); font-family: var(--font-serif); font-weight: 600; font-size: clamp(1.75rem, 4vw, 2.25rem); color: var(--c-white); }
.contact-block p { margin: 0; color: var(--c-white); }
.contact-block__phone { font-family: var(--font-serif); font-size: 2rem; font-weight: 600; margin-bottom: 0.25rem !important; }
.contact-block a { color: var(--c-white); }
.contact-block a:hover { color: var(--c-white); }
.contact-block__mail { font-size: 1.125rem; }

/* 10. FOOTER --------------------------------------------------------- */
.site-footer { border-top: 4px solid var(--c-brand); padding-block: var(--space-4); font-size: 0.875rem; line-height: 1.7; color: var(--c-grey); }
.site-footer__quote { margin: 0 0 var(--space-2); font-family: var(--font-serif); font-style: italic; font-size: 1.125rem; color: var(--c-ink); }
.site-footer p { margin: 0 0 0.75rem; }
.site-footer a { color: var(--c-brand); border-bottom: 1px solid var(--c-brand); }
.site-footer a:hover { color: var(--c-brand-dark); border-bottom-color: var(--c-brand-dark); }

/* 10b. PAGINE INTERNE (servizi) ---------------------------------------- */
.hero--page { padding-block: var(--space-4) var(--space-5); }
.hero--page h1 { margin-bottom: 0; }
.hero--page .hero__lead { margin-top: var(--space-3); }
.breadcrumb { margin: 0 0 var(--space-3); font-size: 0.9375rem; }
.breadcrumb ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.25rem 0.5rem; }
.breadcrumb li + li::before { content: "/"; margin-right: 0.5rem; }
.breadcrumb a { color: var(--c-white); border-bottom: 1px solid currentColor; }
.breadcrumb a:hover { color: var(--c-white); }

.prose { max-width: 46rem; }
.prose p { margin: 0 0 var(--space-2); }
.prose ul { margin: 0 0 var(--space-2); padding-left: 1.25rem; }
.prose li { margin-bottom: 0.4rem; }
.prose li::marker { color: var(--c-brand); }
.prose h3 { margin: var(--space-4) 0 var(--space-2); font-family: var(--font-serif); font-weight: 600; font-size: 1.5rem; line-height: 1.25; color: var(--c-ink); }

.intro { padding-block: var(--space-5) var(--space-4); font-size: 1.125rem; }
.intro h2 { margin: var(--space-3) 0 0; font-family: var(--font-serif); font-weight: 600; font-size: clamp(1.5rem, 3.5vw, 1.875rem); line-height: 1.25; }

.areas { background: var(--c-soft); padding-block: var(--space-5); }
.areas h2 { margin: 0 0 var(--space-3); font-family: var(--font-serif); font-style: italic; font-weight: 400; font-size: clamp(1.5rem, 3.5vw, 2rem); }
.areas .prose { margin-bottom: var(--space-3); }
.areas__statement { font-family: var(--font-serif); font-weight: 600; font-size: 1.25rem; line-height: 1.35; color: var(--c-brand); }
.cards { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-3); grid-template-columns: repeat(auto-fit, minmax(16rem, 22rem)); justify-content: start; }
@media (min-width: 768px) { .cards--2col { grid-template-columns: repeat(2, minmax(16rem, 22rem)); } }
.card { display: block; height: 100%; background: var(--c-white); border: 1px solid var(--c-line); border-top: 4px solid var(--c-brand); padding: var(--space-3); color: var(--c-grey); }
.card:hover { color: var(--c-grey); border-color: var(--c-brand); }
.card h3 { margin: 0 0 0.75rem; font-family: var(--font-serif); font-weight: 600; font-size: 1.375rem; line-height: 1.25; color: var(--c-ink); }
.card p { margin: 0; font-size: 1rem; }

.detail { padding-block: var(--space-5); border-bottom: 1px solid var(--c-line); scroll-margin-top: var(--space-2); }
.detail:last-of-type { border-bottom: 0; }
.detail h2 { margin: 0 0 0.5rem; font-family: var(--font-serif); font-weight: 600; font-size: clamp(1.75rem, 4vw, 2.25rem); line-height: 1.15; color: var(--c-brand); }
.detail__sub { margin: 0 0 var(--space-3); font-size: 1.125rem; font-weight: 600; color: var(--c-ink); }
.detail--last { padding-bottom: var(--space-6); }

/* 10c. CONTACT E PAGINE LEGALI ----------------------------------------- */
.prose h2 { margin: var(--space-5) 0 var(--space-2); font-family: var(--font-serif); font-weight: 600; font-size: clamp(1.5rem, 3.5vw, 1.875rem); line-height: 1.25; color: var(--c-brand); }
.prose h2 + h3 { margin-top: var(--space-2); }
.prose a { color: var(--c-brand); border-bottom: 1px solid currentColor; }
.prose a:hover { color: var(--c-brand-dark); }
.legal { padding-block: var(--space-5) var(--space-6); }
.legal .prose > p:first-child { font-size: 1.125rem; }
.legal__date { margin-top: var(--space-4) !important; font-size: 0.9375rem; color: var(--c-grey); }

.contact-page { padding-block: var(--space-5) var(--space-6); }
.contact-page h2 { margin: 0 0 var(--space-4); font-family: var(--font-serif); font-style: italic; font-weight: 400; font-size: clamp(1.5rem, 3.5vw, 2rem); }
.contact-grid { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-4); grid-template-columns: 1fr; }
.contact-item { text-align: center; padding: var(--space-3); background: var(--c-soft); border-top: 3px solid var(--c-brand); }
.contact-item__icon { color: var(--c-brand); margin-bottom: var(--space-2); }
.contact-item h3 { margin: 0 0 0.5rem; font-family: var(--font-serif); font-weight: 600; font-size: 1.375rem; color: var(--c-ink); }
.contact-item p { margin: 0; }
.contact-item a { color: var(--c-brand); border-bottom: 1px solid currentColor; overflow-wrap: anywhere; }
.contact-item a:hover { color: var(--c-brand-dark); }
@media (min-width: 37.5rem) { .contact-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 60rem) { .contact-grid { grid-template-columns: repeat(4, 1fr); } }

.notfound { padding-block: var(--space-5) var(--space-6); font-size: 1.125rem; }
.notfound__links { list-style: none; padding: 0 !important; display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; margin-top: var(--space-3) !important; }
.notfound__links li { margin: 0; }

/* 11. RESPONSIVE (mobile-first) --------------------------------------- */
@media (min-width: 37.5rem) { /* 600px */
  :root { --gutter: 2rem; }
  .services__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 60rem) { /* 960px */
  :root { --gutter: 4rem; --header-h: 5.5rem; }
  .brand img { height: 4rem; }
  .hero { padding-block: 6rem 5.5rem; }
  .slider { padding-block: 3.5rem; }
  .nav-toggle { display: none; }
  .site-nav { display: block; width: auto; flex-basis: auto; }
  .site-nav > ul { display: flex; gap: 0 2rem; align-items: center; }
  .site-nav a, .site-nav button { width: auto; padding: 0.4rem 0; }
  .site-nav a[aria-current="page"], .site-nav .is-current > button { border-bottom-color: var(--c-brand); }
  .has-sub { position: relative; }
  .site-nav .sub-list {
    position: absolute; left: -1.25rem; top: calc(100% + 0.5rem); min-width: 17rem; padding: 0.5rem 0;
    background: var(--c-white); border: 1px solid var(--c-line); border-top: 3px solid var(--c-brand);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.12);
  }
  .site-nav .sub-list a { padding: 0.7rem 1.5rem; border-bottom: 0; }
  .site-nav .sub-list a:hover { background: var(--c-soft); color: var(--c-brand); }
  .site-nav .sub-list a[aria-current="page"] { background: var(--c-soft); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}