/* ==========================================================================
   RILIEVOLASERBIM - STILI (css/style.css)
   Indice:
     1. Colori e font (variabili)      7. Chi siamo
     2. Base                           8. Esperienze (carosello e loghi)
     3. Intestazione e pulsanti        9. Contatti e modulo
     4. Home                          10. Piè di pagina
     5. Linea e pallino giallo        11. Comparsa allo scroll
     6. Servizi (riepilogo e pagine)  12. Riduzione animazioni (accessibilità)
   ========================================================================== */


/* 1. COLORI E FONT ---------------------------------------------------------
   Cambiando un valore qui si aggiorna tutto il sito. */
:root{
  --bg:#FFFFFF;          /* sfondo delle pagine */
  --fg:#0E0E0E;          /* testo principale (nero) */
  --muted:#707070;       /* testo secondario (grigio) */
  --hair:#E6E6E6;        /* linee sottili di separazione */
  --soft:#F5F5F4;        /* fondo dei riquadri immagine segnaposto */
  --hl:#EAFF1F;          /* GIALLO FLUO: pallino della linea ed evidenziatore (unico colore) */
  --font:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",Helvetica,Arial,sans-serif;
  --gutter:max(20px, env(safe-area-inset-left, 0px));   /* margine laterale sinistro */
  --gutter-r:max(20px, env(safe-area-inset-right, 0px));/* margine laterale destro */
  --maxw:1240px;         /* larghezza massima dei contenuti */
  --ease:cubic-bezier(.2,.7,.2,1);  /* curva delle animazioni */
  color-scheme:light;
}


/* 2. BASE ------------------------------------------------------------------ */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0}
body{background:var(--bg);color:var(--fg);font:300 17px/1.65 var(--font);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%}
[hidden]{display:none!important}
a{color:inherit}
:focus-visible{outline:2px solid var(--fg);outline-offset:4px;border-radius:2px}
.wrap{max-width:var(--maxw);margin-inline:auto;padding-left:var(--gutter);padding-right:var(--gutter-r)}

/* Titoli: peso, interlinea e spaziatura lettere */
h1,h2,h3{font-weight:800;letter-spacing:-.04em;line-height:.98;margin:0;text-wrap:balance}
h2{font-size:clamp(2.2rem,5.4vw,4.4rem)}   /* min, scala con lo schermo, max */
h3{font-size:1.2rem;letter-spacing:-.015em;font-weight:700}
p{margin:0;max-width:60ch}
.label{font:500 .74rem/1 var(--font);letter-spacing:.16em;text-transform:uppercase;color:var(--muted)} /* etichette maiuscole piccole */
.lead{font-size:clamp(1.05rem,1.35vw,1.2rem);color:var(--muted)}  /* paragrafi introduttivi */

/* Distanza verticale tra le sezioni */
section{padding-block:clamp(110px,16vh,190px)}


/* 3. INTESTAZIONE E PULSANTI ------------------------------------------------ */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--bg)}
.site-head{position:fixed;top:env(safe-area-inset-top,0px);left:0;right:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color .3s}
.site-head.scrolled{border-bottom-color:var(--hair)}  /* linea sotto l'intestazione dopo lo scroll */
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.brand{font-weight:800;font-size:1rem;letter-spacing:-.02em;text-decoration:none}
.brand span{font-weight:400}
.nav{display:flex;gap:30px;align-items:center}
.nav a{text-decoration:none;font-size:.88rem;font-weight:400;color:var(--muted);transition:color .2s}
.nav a:hover,.nav a.btn{color:var(--fg)}
@media (max-width:820px){.nav a:not(.btn){display:none}}  /* su telefono resta solo "Contatti" */

/* Pulsanti a pillola: .btn = contorno, .btn.solid = pieno nero */
.btn{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:0 20px;border-radius:999px;border:1px solid var(--fg);background:transparent;color:var(--fg);font:500 .88rem/1 var(--font);text-decoration:none;cursor:pointer;transition:background .25s var(--ease),color .25s var(--ease)}
.btn:hover,.btn.solid{background:var(--fg);color:var(--bg)}
.btn.solid:hover{background:transparent;color:var(--fg)}
.btn svg{width:15px;height:15px}


/* 4. HOME ------------------------------------------------------------------- */
.hero{min-height:100vh;min-height:100svh;display:grid;place-items:center;text-align:center;position:relative;padding-block:96px 130px}
.hero .wrap{display:grid;justify-items:center;gap:44px}
.logo-img{height:96px;width:auto}                 /* altezza del logo vero (img/logo.svg) */
.logo-ph{display:grid;justify-items:center;gap:12px}
.logo-ph svg{width:54px;height:54px}
.logo-word{font-weight:800;font-size:1.15rem;letter-spacing:-.02em}
.logo-word span{font-weight:400}
.logo-note{font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:#A3A3A3}

/* Frase principale e animazione di composizione delle lettere */
.hero h1{font-size:clamp(2.9rem,9vw,8rem);letter-spacing:-.055em;line-height:.94;max-width:11ch}
.hero h1 .w{display:inline-block;white-space:nowrap}
.hero h1 .ch{display:inline-block;white-space:pre}
.hero h1.compose .ch{animation:compose 1s var(--ease) both;animation-delay:calc(var(--i) * 34ms + 200ms)} /* 34ms = ritardo tra una lettera e l'altra */
@keyframes compose{0%{opacity:0;filter:blur(12px);transform:translate(var(--dx),var(--dy)) rotate(var(--r))}100%{opacity:1;filter:blur(0);transform:none}}

/* "Scorri" con lineetta animata */
.scroll-cue{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);display:grid;justify-items:center;gap:12px;text-decoration:none}
.scroll-cue i{display:block;width:1px;height:60px;background:var(--fg);animation:cue 2.2s var(--ease) infinite;transform-origin:top}
@keyframes cue{0%{transform:scaleY(0)}50%{transform:scaleY(1)}100%{transform:scaleY(1);opacity:0}}


/* 5. LINEA E PALLINO GIALLO -------------------------------------------------- */
.journey{position:relative}
.journey > section{position:relative;z-index:1}
.snake{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;overflow:visible}
.snake .ghost{fill:none;stroke:#D4D4D4;stroke-width:1;stroke-dasharray:1 6;stroke-linecap:round} /* traccia tratteggiata del percorso */
.snake .draw{fill:none;stroke:var(--fg);stroke-width:1.2;stroke-linecap:round;stroke-linejoin:round} /* linea nera: stroke-width = spessore */
#tipg{transition:opacity .3s}
.snake .dot{fill:var(--hl);stroke:var(--fg);stroke-width:1;transform-origin:0 0;transition:transform .5s var(--ease)}  /* pallino */
.snake .halo{fill:var(--hl);opacity:.45;transform-origin:0 0;transition:transform .5s var(--ease)}                     /* alone */
.snake .ring{fill:none;stroke:var(--hl);stroke-width:3;opacity:0;transform-origin:0 0}                                 /* onda */
/* Quando il pallino arriva su un titolo: si ingrandisce ed emette due onde */
#tipg.land .dot{transform:scale(1.7)}
#tipg.land .halo{transform:scale(2.4)}
#tipg.land .ring{animation:ring 1.4s var(--ease) 2}
@keyframes ring{0%{opacity:.9;transform:scale(1)}100%{opacity:0;transform:scale(6)}}

/* Evidenziatore a mano libera dietro i titoli (tratti generati da js/main.js) */
.hl-title{position:relative;isolation:isolate}
.hl-title .marker{position:absolute;left:0;top:0;width:100%;height:100%;overflow:visible;z-index:-1;pointer-events:none}
.hl-title .marker path{fill:none;stroke:var(--hl);stroke-linecap:round;stroke-linejoin:round;opacity:.92;transition:stroke-dashoffset var(--d,.45s) cubic-bezier(.5,0,.3,1) var(--delay,0s)}
.hl-title:not(.lit) .marker path{transition:none}


/* 6. SERVIZI ------------------------------------------------------------------ */
/* Riepilogo */
.overview .head{display:grid;gap:22px;margin-bottom:72px;max-width:760px}
.svc-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--hair)}
.svc-list a{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) 24px;gap:24px;align-items:baseline;padding:30px 0;border-bottom:1px solid var(--hair);text-decoration:none}
.svc-list h3{font-size:clamp(1.3rem,2.4vw,1.9rem);letter-spacing:-.03em;transition:transform .4s var(--ease)}
.svc-list p{color:var(--muted);font-size:.98rem}
.svc-list svg{width:22px;height:22px;transition:transform .4s var(--ease)}
.svc-list a:hover h3{transform:translateX(8px)}
.svc-list a:hover svg{transform:translate(4px,-4px)}
@media (max-width:820px){.svc-list a{grid-template-columns:minmax(0,1fr) 24px}.svc-list p{grid-column:1;grid-row:2}}

/* Pagine dei singoli servizi */
.service .wrap{display:grid;gap:48px}
.service.right .wrap{justify-items:end;text-align:right}   /* servizi con titolo a destra */
.svc-title{font-size:clamp(2.7rem,9.2vw,8.6rem);letter-spacing:-.055em;line-height:.92;max-width:11ch} /* titolo grande */
.svc-body{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(28px,5vw,80px);max-width:980px;text-align:left}
.svc-body .lead{color:var(--fg);font-size:clamp(1.1rem,1.6vw,1.35rem);line-height:1.55}
.svc-side{display:grid;gap:22px;align-content:start}
.svc-side ul{list-style:none;padding:0;margin:0;display:grid}
.svc-side li{padding:12px 0;border-bottom:1px solid var(--hair);font-size:.98rem}
.svc-side li:first-child{border-top:1px solid var(--hair)}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{font-size:.72rem;font-weight:500;letter-spacing:.04em;padding:7px 12px;border-radius:999px;border:1px solid var(--hair);color:var(--muted)}
.svc-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
@media (max-width:820px){
  .service.right .wrap{justify-items:start;text-align:left}  /* su telefono tutti a sinistra */
  .svc-body{grid-template-columns:1fr}
}


/* 7. CHI SIAMO -------------------------------------------------------------- */
.about .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(36px,6vw,110px);align-items:start}
.about .text{display:grid;gap:26px;min-width:0}
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin:16px 0 0;padding-top:28px;border-top:1px solid var(--hair)}
.facts dt{font-weight:800;font-size:clamp(2rem,3.6vw,2.8rem);letter-spacing:-.04em;line-height:1;font-variant-numeric:tabular-nums}
.facts dd{margin:8px 0 0;font-size:.86rem;color:var(--muted)}

/* Riquadri immagine: la foto copre tutto il riquadro; senza foto resta il segnaposto */
.ph{position:relative;margin:0;background:var(--soft);aspect-ratio:4/5;max-width:100%;display:grid;place-items:center;overflow:hidden}
.ph svg{width:40%;max-width:240px;color:#C9C9C9}
.ph .cap{position:absolute;left:14px;bottom:12px;font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:#9A9A9A}
.ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}  /* object-fit:cover = riempie senza deformare */
@media (max-width:820px){.about .wrap{grid-template-columns:1fr}.ph{aspect-ratio:4/3}}


/* 8. ESPERIENZE --------------------------------------------------------------- */
.exp{padding-bottom:0}
.exp .head{display:flex;justify-content:space-between;align-items:end;gap:24px;flex-wrap:wrap;margin-bottom:48px}
.exp-title{display:grid;gap:18px}
.exp .head .lead{max-width:36ch}

/* Carosello a schermo intero */
.carousel{position:relative;height:100vh;height:100svh;min-height:520px;overflow:hidden;background:var(--soft)}
.slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .9s var(--ease),visibility .9s} /* .9s = durata dissolvenza */
.slide.on{opacity:1;visibility:visible}
.slide .ph{position:absolute;inset:0;aspect-ratio:auto;height:100%}
.slide .ph svg{width:28%}
.slide .card{position:absolute;left:var(--gutter);bottom:100px;max-width:min(500px,calc(100% - 40px));background:var(--bg);padding:28px 30px;display:grid;gap:12px} /* riquadro bianco con i testi */
.slide .card h3{font-size:clamp(1.5rem,2.8vw,2.1rem);font-weight:800;letter-spacing:-.035em}
.metrics{display:flex;flex-wrap:wrap;gap:6px 22px;font-size:.84rem;color:var(--muted);font-variant-numeric:tabular-nums}
.metrics b{color:var(--fg);font-weight:500}
.car-ui{position:absolute;left:var(--gutter);right:var(--gutter-r);bottom:30px;display:flex;align-items:center;gap:10px;z-index:2}
.count{margin-right:auto;font-size:.85rem;font-weight:500;font-variant-numeric:tabular-nums;background:var(--bg);padding:10px 14px;border-radius:999px}
.round{width:48px;height:48px;border-radius:50%;border:1px solid var(--fg);background:var(--bg);color:var(--fg);display:grid;place-items:center;cursor:pointer;transition:background .2s,color .2s}
.round:hover{background:var(--fg);color:var(--bg)}
.round svg{width:18px;height:18px}
.bar{position:absolute;left:0;bottom:0;height:2px;background:var(--fg);width:0;z-index:2}  /* barra di avanzamento */

/* Loghi che scorrono */
.logos{padding-block:60px;border-bottom:1px solid var(--hair)}
.logos .row{display:flex;align-items:center;gap:20px;margin-bottom:26px}
.marquee{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.track{display:flex;align-items:center;gap:72px;width:max-content;animation:slide 40s linear infinite} /* 40s = velocità (più alto = più lento) */
.marquee:hover .track,.marquee:focus-within .track,.marquee.paused .track{animation-play-state:paused}
@keyframes slide{to{transform:translateX(-50%)}}
.logo{display:flex;align-items:center;gap:10px;color:#9A9A9A;font-weight:700;font-size:1.05rem;letter-spacing:-.02em;white-space:nowrap;transition:color .2s,filter .2s,opacity .2s}
.logo:hover{color:var(--fg)}
.logo svg{width:26px;height:26px}
.logo img{height:36px;width:auto;filter:grayscale(1);opacity:.6;transition:filter .2s,opacity .2s}  /* loghi in grigio... */
.logo:hover img{filter:none;opacity:1}                                                              /* ...a colori al passaggio */
.pause{margin-left:auto;min-height:36px;padding:0 14px;font-size:.78rem}


/* 9. CONTATTI E MODULO ---------------------------------------------------------- */
.contact .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(36px,6vw,110px)}
.contact .text{display:grid;gap:26px;align-content:start;min-width:0}
.contact h2{font-size:clamp(2.6rem,6.6vw,5.6rem)}
.channels{display:grid;gap:20px;margin-top:8px}
.channel{display:grid;gap:6px}
.channel .val{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-weight:500;font-size:1.15rem}
.channel .val a{text-decoration:none}
.copy{min-height:34px;padding:0 14px;font-size:.76rem}
form{display:grid;gap:26px;align-content:start}
label{display:grid;gap:4px;font-size:.8rem;font-weight:500;color:var(--muted)}
input,select,textarea{font:400 1.05rem/1.4 var(--font);color:var(--fg);background:transparent;border:0;border-bottom:1px solid #CFCFCF;border-radius:0;padding:10px 0;min-height:46px;width:100%;transition:border-color .2s}
input:focus,select:focus,textarea:focus{outline:none;border-bottom-color:var(--fg)}
input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--fg);outline-offset:4px}
textarea{min-height:110px;resize:vertical}
form .btn{justify-self:start}
.form-note{font-size:.85rem;color:var(--muted)}
@media (max-width:820px){.contact .wrap{grid-template-columns:1fr}}


/* 10. PIÈ DI PAGINA ---------------------------------------------------------------- */
footer{padding-block:40px;font-size:.84rem;color:var(--muted)}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}


/* 11. COMPARSA ALLO SCROLL (elementi con class="reveal") ---------------------------- */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.js .reveal.in{opacity:1;transform:none}


/* 12. RIDUZIONE ANIMAZIONI: rispetta chi ha disattivato le animazioni nel sistema --- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .reveal{opacity:1;transform:none}
}