/* site.css — shared CSS extracted from index.html, servizi.html, contatti.html
   Goal: cacheable shared rules; zero visual regression.
   Page-specific rules (hero, page-hero, services grid, contact form, intro-strip, etc.)
   remain inline in each HTML and will be split in a later task. */

/* ============== TOKENS ============== */
:root{
  --cream:#DDD2D6;--cream-deep:#CBCBCB;--cream-darker:#B5A4AA;--ivory:#EFE8EA;
  --bark:#000000;--ink:#1A1A1A;--ink-soft:#3D3438;--ink-mute:#574B50;
  --paper-shadow:rgba(0,0,0,.08);
  --gold:#7B1527;--gold-deep:#5C0F1C;--gold-soft:#9C2538;--gold-glow:#7B1527;
  --terracotta:#7B1527;--wine:#5C0F1C;--sky:#6893A8;
  --line:rgba(0,0,0,.16);--line-soft:rgba(0,0,0,.08);--line-strong:rgba(0,0,0,.32);
  --s-1:.25rem;--s-2:.5rem;--s-3:.75rem;--s-4:1rem;--s-5:1.5rem;--s-6:2rem;--s-7:3rem;--s-8:4rem;--s-9:6rem;--s-10:8rem;--s-11:10rem;--s-12:14rem;
  --r-sm:6px;--r-md:14px;--r-lg:24px;--r-xl:38px;
  --container:1320px;--container-narrow:1040px;
  --f-display:'Fraunces','Times New Roman',Georgia,serif;
  --f-body:'Manrope',system-ui,-apple-system,sans-serif;--f-eyebrow:'Cinzel',Georgia,serif;--f-script:'Italianno',cursive;
  --ease-out:cubic-bezier(.2,.7,.2,1);--ease-soft:cubic-bezier(.4,.0,.2,1);--ease-spring:cubic-bezier(.34,1.56,.64,1);
}

/* ============== RESET / BASE ============== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;color-scheme:light}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{font-family:var(--f-body);background:var(--cream);color:var(--ink);line-height:1.55;font-size:16px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
img,picture,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
input,textarea,select{font:inherit;color:inherit}
::selection{background:var(--gold-soft);color:var(--bark)}

/* Global paper-noise overlay (decorative) */
body::before{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.06  0 0 0 0 0.06  0 0 0 0 0.06  0 0 0 0.4 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.13'/></svg>");mix-blend-mode:multiply;opacity:.5}

/* ============== LAYOUT PRIMITIVES ============== */
.skip-link{position:absolute;left:0;top:-100px;z-index:100;background:var(--ink);color:var(--ivory);padding:.6rem 1rem;border-radius:0 0 var(--r-sm) 0;font-size:.85rem;letter-spacing:.04em}
.skip-link:focus{top:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 clamp(1.25rem,4vw,3rem);position:relative;z-index:1}
.container--narrow{max-width:var(--container-narrow)}

/* ============== TYPE ============== */
.eyebrow{display:inline-flex;align-items:center;gap:.7rem;font-family:var(--f-eyebrow);font-size:.78rem;letter-spacing:.32em;text-transform:uppercase;font-weight:500;color:var(--ink-soft)}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--gold-deep);display:inline-block}
.eyebrow--center{justify-content:center}
.eyebrow--center::after{content:"";width:28px;height:1px;background:var(--gold-deep)}
.display{font-family:var(--f-display);font-weight:400;line-height:.96;letter-spacing:-.025em;color:var(--bark);font-variation-settings:"opsz" 144,"SOFT" 30}
.display em,.display .ital{font-style:italic;font-weight:300;font-variation-settings:"opsz" 144,"SOFT" 100;color:var(--gold-deep)}
h1.display,.h1{font-size:clamp(2.6rem,7.5vw,7.4rem)}
h2.display,.h2{font-size:clamp(2rem,5.4vw,4.8rem)}
h3.display,.h3{font-size:clamp(1.4rem,2.6vw,2.4rem)}
.lead{font-size:clamp(1.05rem,1.4vw,1.25rem);color:var(--ink-soft);max-width:42rem;font-weight:400;line-height:1.55}

/* ============== BUTTONS ============== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.6rem;padding:1rem 1.6rem;font-family:var(--f-body);font-weight:500;font-size:.92rem;letter-spacing:.03em;border-radius:999px;cursor:pointer;position:relative;isolation:isolate;overflow:hidden;transition:transform .4s var(--ease-out),box-shadow .4s var(--ease-out),background .4s var(--ease-out),color .4s var(--ease-out);white-space:nowrap}
.btn--primary{background:transparent;color:var(--bark);border:1px solid var(--bark);box-shadow:none}
.btn--primary::before{content:"";position:absolute;inset:0;border-radius:inherit;background:var(--bark);transform:translateY(101%);transition:transform .55s var(--ease-out);z-index:-1;pointer-events:none}
.btn--primary > *{position:relative;z-index:1}
.btn--primary:hover{color:var(--ivory);transform:translateY(-1px)}
.btn--primary:hover::before{transform:translateY(0)}
.btn--primary .arrow{transition:transform .35s var(--ease-out)}
.btn--primary:hover .arrow{transform:translateX(4px)}
.btn--primary[disabled]{opacity:.6;cursor:wait}
/* Light-on-dark variants — applies on the homepage hero, page hero (subpages), and any header in hero-mode */
.hero:not(.hero--light) .btn--primary,.page-hero .btn--primary,.header--hero-mode .btn--primary{color:var(--ivory);border-color:var(--ivory)}
.hero:not(.hero--light) .btn--primary::before,.page-hero .btn--primary::before,.header--hero-mode .btn--primary::before{background:var(--ivory)}
.hero:not(.hero--light) .btn--primary:hover,.page-hero .btn--primary:hover,.header--hero-mode .btn--primary:hover{color:var(--bark)}
.header--hero-mode.header--scrolled .btn--primary{color:var(--bark);border-color:var(--bark)}
.header--hero-mode.header--scrolled .btn--primary::before{background:var(--bark)}
.header--hero-mode.header--scrolled .btn--primary:hover{color:var(--ivory)}
.btn--ivory{background:var(--ivory);color:var(--bark);border:1px solid var(--ivory);box-shadow:0 8px 24px -16px rgba(0,0,0,.4);transition:transform .4s var(--ease-out),background .4s var(--ease-out),box-shadow .4s var(--ease-out)}
.btn--ivory:hover{transform:translateY(-1px);background:#fff;box-shadow:0 14px 32px -18px rgba(0,0,0,.55)}
.btn--ghost{background:transparent;color:var(--bark);border:1px solid var(--line-strong);padding:1rem 1.6rem}
.btn--ghost:hover{border-color:var(--gold-deep);color:var(--gold-deep)}
.btn--text{padding:.4rem 0;color:var(--ink);font-weight:500;background:none;border:0;border-radius:0;border-bottom:1px solid var(--line-strong);letter-spacing:.04em}
.btn--text:hover{color:var(--gold-deep);border-color:var(--gold-deep)}
.btn .arrow{width:14px;height:14px;transition:transform .4s var(--ease-out)}
.btn:hover .arrow{transform:translateX(4px)}
.btn--lg{padding:1.15rem 2rem;font-size:.96rem}

/* ============== HEADER ============== */
.header{position:fixed;top:0;left:0;right:0;z-index:50;padding:.85rem 0;transition:background .35s var(--ease-out),backdrop-filter .35s var(--ease-out),border-color .35s var(--ease-out),padding .35s var(--ease-out);border-bottom:1px solid transparent}
.header--scrolled{background:rgba(221,210,214,.84);backdrop-filter:blur(20px) saturate(1.1);-webkit-backdrop-filter:blur(20px) saturate(1.1);border-bottom-color:var(--line-soft);padding:.55rem 0}
.header--hero-mode{--header-fg:#EFE8EA}
.header--hero-mode .nav__link,.header--hero-mode .nav-toggle{color:#EFE8EA}
.header--hero-mode.header--scrolled .nav__link,.header--hero-mode.header--scrolled .nav-toggle{color:var(--ink)}
.header__inner{display:flex;align-items:center;justify-content:space-between;gap:2rem}
.header__logo{display:block;width:80px;height:80px;flex-shrink:0;transition:transform .35s var(--ease-out);position:relative}
.header__logo:hover{transform:scale(1.03)}
.header__logo picture{position:absolute;inset:0;display:block}
.header__logo img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 2px 6px rgba(0,0,0,.18));transition:opacity .35s var(--ease-out)}
@media (max-width:540px){.header__logo{width:60px;height:60px}}
.header__logo .logo-light{opacity:1}
.header__logo .logo-dark{opacity:0}
.header--scrolled .logo-light,.header:not(.header--hero-mode) .logo-light{opacity:0}
.header--scrolled .logo-dark,.header:not(.header--hero-mode) .logo-dark{opacity:1}
/* Force pure white on hero (no scroll). brightness(0) invert(1) collapses any source pixel to #fff while preserving alpha. */
.header--hero-mode:not(.header--scrolled) .logo-light{filter:brightness(0) invert(1) drop-shadow(0 2px 10px rgba(0,0,0,.45))}
.nav{display:flex;align-items:center;gap:.4rem}
.nav__link{font-size:.92rem;letter-spacing:.04em;font-weight:500;padding:.6rem 1rem;border-radius:999px;position:relative;color:var(--ink);transition:color .25s var(--ease-out)}
.nav__link::after{content:"";position:absolute;left:1rem;right:1rem;bottom:.35rem;height:1px;background:currentColor;transform:scaleX(0);transform-origin:right;transition:transform .35s var(--ease-out)}
.nav__link:hover::after,.nav__link[aria-current="page"]::after{transform:scaleX(1);transform-origin:left}
.nav__cta{margin-left:.8rem}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;border-radius:999px;transition:background .25s var(--ease-out);color:var(--ink)}
.nav-toggle:hover{background:rgba(0,0,0,.05)}
.nav-toggle svg{width:22px;height:22px}
@media (max-width:780px){.nav{display:none}.nav-toggle{display:flex}}
.nav-drawer{position:fixed;inset:0 0 0 auto;width:min(360px,90vw);background:var(--ivory);z-index:60;transform:translateX(105%);transition:transform .32s cubic-bezier(.2,.85,.25,1);padding:5rem 2rem 2rem;display:flex;flex-direction:column;box-shadow:-30px 0 60px -20px rgba(0,0,0,.3)}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer__close{position:absolute;top:1rem;right:1rem;width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:999px;color:var(--ink)}
.nav-drawer__close:hover{background:rgba(0,0,0,.05)}
.nav-drawer__list{display:flex;flex-direction:column;gap:.5rem}
.nav-drawer__list a{display:block;font-family:var(--f-display);font-size:2rem;font-weight:300;line-height:1.1;padding:1.05rem 0 .55rem;color:var(--bark);border-bottom:1px solid var(--line-soft);transition:color .3s var(--ease-out),padding-left .3s var(--ease-out)}
.nav-drawer__list a:hover{color:var(--gold-deep);padding-left:.4rem}
.nav-drawer__list a em{font-style:italic;color:var(--gold-deep)}
.nav-drawer__cta{margin-top:auto;padding-top:2rem}
.nav-overlay{position:fixed;inset:0;z-index:55;background:rgba(0,0,0,.4);opacity:0;pointer-events:none;backdrop-filter:blur(4px);transition:opacity .4s var(--ease-out)}
.nav-overlay.is-active{opacity:1;pointer-events:auto}

/* ============== SHARED KEYFRAMES ============== */
/* ring-spin is used by multiple decorative ring elements across pages */
@keyframes ring-spin{to{transform:rotate(360deg)}}

/* ============== MARQUEE (homepage only, but cacheable) ============== */
.marquee{position:relative;overflow:hidden;padding:1.4rem 0;background:var(--bark);color:var(--ivory);border-top:1px solid rgba(239,232,234,.1);border-bottom:1px solid rgba(239,232,234,.1)}
.marquee__track{display:flex;width:max-content;animation:marquee 38s linear infinite;gap:3rem}
.marquee__item{display:inline-flex;align-items:center;gap:1.5rem;font-family:var(--f-display);font-style:italic;font-weight:300;font-size:clamp(1.4rem,2.4vw,2.1rem);white-space:nowrap;color:var(--ivory);font-variation-settings:"opsz" 144}
.marquee__item span{color:var(--gold-glow)}
.marquee__dot{width:8px;height:8px;border-radius:999px;background:var(--gold);flex-shrink:0}
@keyframes marquee{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.marquee__track{animation:none}}
.marquee:hover .marquee__track{animation-play-state:paused}

/* ============== FOOTER ============== */
.footer{background:var(--cream);border-top:1px solid var(--line-soft);padding:clamp(3rem,8vh,5rem) 0 1.5rem}
.footer__top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:3rem;align-items:flex-start}
@media (max-width:880px){.footer__top{grid-template-columns:1fr 1fr;gap:2.5rem}}
@media (max-width:540px){.footer__top{grid-template-columns:1fr}}
.footer__logo-big{height:88px!important}.footer__logo-big img{max-width:280px!important}@media (max-width:540px){.footer__logo-big{height:72px!important}}.footer__brand-tagline{margin-top:1.5rem;font-size:.95rem;color:var(--ink-soft);max-width:22rem;line-height:1.55}
.footer__brand-tagline em{font-family:var(--f-display);font-style:italic;color:var(--bark);font-weight:400;font-variation-settings:"opsz" 144}
.footer__col h4,.footer__col .footer-col-title{font-family:var(--f-display);font-style:italic;font-weight:400;font-size:1.05rem;color:var(--bark);margin-bottom:1.2rem;font-variation-settings:"opsz" 144}
.footer__col a{display:block;padding:.35rem 0;color:var(--ink-soft);font-size:.92rem;transition:color .3s var(--ease-out),padding-left .3s var(--ease-out);position:relative}
.footer__col a:hover{color:var(--gold-deep);padding-left:.4rem}
.footer__bottom{margin-top:3.5rem;padding-top:1.5rem;border-top:1px solid var(--line-soft);display:flex;justify-content:space-between;font-size:.82rem;color:var(--ink-mute);letter-spacing:.04em;flex-wrap:wrap;gap:1rem}
.footer__rings{display:flex;align-items:center;gap:.6rem;font-family:var(--f-display);font-style:italic;font-weight:300;font-size:.95rem;color:var(--gold-deep);font-variation-settings:"opsz" 144}
.footer__rings svg{width:18px;height:18px;color:var(--gold-deep)}

/* ============== WHATSAPP FAB ============== */
.wa-fab{position:fixed;bottom:1.5rem;right:1.5rem;z-index:40;display:inline-flex;align-items:center;gap:.6rem;padding:.85rem 1.2rem;border-radius:999px;background:#25D366;color:#fff;font-size:.92rem;font-weight:500;letter-spacing:.02em;box-shadow:0 10px 22px -10px rgba(0,0,0,.32),0 2px 6px -2px rgba(0,0,0,.18);transition:transform .35s var(--ease-spring),box-shadow .35s var(--ease-out),background .25s var(--ease-out);isolation:isolate}
.wa-fab:hover{transform:scale(1.05);background:#1FB955;box-shadow:0 14px 28px -10px rgba(0,0,0,.42),0 4px 10px -2px rgba(0,0,0,.22)}
.wa-fab svg{width:22px;height:22px;fill:currentColor;position:relative;z-index:1}
.wa-fab__label{position:relative;z-index:1}
.wa-fab__pulse{position:absolute;inset:0;border-radius:inherit;background:#25D366;opacity:.45;z-index:-1;animation:wa-pulse 2.6s var(--ease-soft) infinite}
@keyframes wa-pulse{0%{transform:scale(1);opacity:.45}80%{opacity:0}100%{transform:scale(1.45);opacity:0}}
@media (prefers-reduced-motion:reduce){.wa-fab__pulse{display:none}}
@media (max-width:540px){.wa-fab__label{display:none}.wa-fab{padding:.85rem;width:48px;height:48px;justify-content:center;bottom:1rem;right:1rem}.wa-fab svg{width:20px;height:20px}.footer__top{gap:2rem}.footer__bottom{flex-direction:column;align-items:flex-start;gap:.6rem}.container{padding:0 1.25rem}.marquee{padding:1rem 0}.marquee__item{font-size:1.1rem;gap:1rem}.marquee__track{gap:2rem}}

/* ============== REVEAL UTILITY (shared) ============== */
[data-reveal]{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease-out),transform .9s var(--ease-out)}
[data-reveal].is-visible{opacity:1;transform:translateY(0)}
[data-reveal-delay="100"]{transition-delay:.1s}
[data-reveal-delay="200"]{transition-delay:.2s}
[data-reveal-delay="300"]{transition-delay:.3s}
[data-reveal-delay="400"]{transition-delay:.4s}
[data-reveal-delay="500"]{transition-delay:.5s}
[data-reveal-delay="600"]{transition-delay:.6s}
[data-reveal="left"]{transform:translateX(-30px)}
[data-reveal="right"]{transform:translateX(30px)}
[data-reveal="left"].is-visible,[data-reveal="right"].is-visible{transform:translateX(0)}
[data-reveal="scale"]{transform:scale(.94)}
[data-reveal="scale"].is-visible{transform:scale(1)}
@media (prefers-reduced-motion:reduce){[data-reveal]{opacity:1!important;transform:none!important;transition:none!important}}

/* perf: skip render of offscreen sections (no .services — interferes with reveal IO on cards) */
.trieste-carousel, .trieste, .esperienza, .stats, .vision, .cta-band,
.footer, .intro-strip, .flow-step, .contact-split, .contact-faq {
  content-visibility: auto;
  contain-intrinsic-size: 0 800px;
}
@media (prefers-reduced-motion: reduce) {
  /* CV may interact poorly with intersection-based reveals; allow override */
  .services, .trieste-carousel, .trieste, .esperienza, .stats, .vision, .cta-band {
    content-visibility: visible;
  }
}

/* Mobile touch-target audit: 44px minimum (iOS HIG / Material)
   Use `flex` (not inline-flex) on footer/drawer links so they stay block-level
   and continue to stack one-per-line. align-items:center vertically centers
   the text within the inflated hit area without changing visual size. */
@media (max-width: 767px){
  .nav-toggle{ padding: 12px; min-width: 48px; min-height: 48px; }
  .footer a, .footer__legal a, .nav-drawer__list a{ min-height: 44px; display: flex; align-items: center; }
  .page-hero__crumbs a{ padding: 6px 0; display: inline-flex; align-items: center; min-height: 32px; }
}

/* View Transitions: smooth crossfade across page navigations (Chrome 126+, Safari 18+) */
@supports (view-transition-name: none) {
  .header__logo{ view-transition-name: site-logo; }
  .header{ view-transition-name: site-header; }
  .footer{ view-transition-name: site-footer; }
}
@media (prefers-reduced-motion: reduce){
  ::view-transition-group(*), ::view-transition-image-pair(*){ animation: none !important; }
}