/* Volta Studio, marchio "Corrente" (18/10/2026).
   I colori stanno SOLO qui: per cambiare palette (alternative in marchio/LEGGIMI.md) si cambiano queste righe. */
:root {
  --blu: #2236F0;
  --cipria: #F7D9D2;
  --inchiostro: #0E1033;
  --nebbia: #C9CEFF;
  --bianco: #FFFFFF;
  /* toni ricavati dai cinque colori, così seguono la palette */
  --tenue: color-mix(in srgb, var(--inchiostro) 74%, var(--bianco));
  --velo: color-mix(in srgb, var(--nebbia) 28%, var(--bianco));
  --cipria-chiara: color-mix(in srgb, var(--cipria) 55%, var(--bianco));
  --font: "Mona Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --largo: 1240px;
  --bordo: clamp(16px, 4vw, 48px);
  color-scheme: light;
}

@font-face {
  font-family: "Mona Sans";
  src: url("font/mona-sans-latin.woff2") format("woff2");
  font-weight: 200 900;
  font-stretch: 75% 125%;
  font-display: swap;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 106px; }
body { margin: 0; background: var(--bianco); color: var(--inchiostro); font: 400 18px/1.6 var(--font); overflow-x: clip; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3 { margin: 0; font-stretch: 125%; letter-spacing: -0.02em; text-wrap: balance; }
p { margin: 0; }
:focus-visible { outline: 3px solid var(--blu); outline-offset: 3px; border-radius: 4px; }
.salta { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--cipria); color: var(--inchiostro); padding: 10px 16px; border-radius: 8px; }
.salta:focus { left: 8px; }
.giro { max-width: var(--largo); margin: 0 auto; padding-inline: var(--bordo); }

/* titoli: Mona Sans larga e piena */
.t2 { font-size: clamp(36px, 5.4vw, 72px); font-weight: 860; line-height: .98; }
.t2-medio { font-size: clamp(30px, 3.6vw, 48px); }
.t3 { font-size: clamp(22px, 2.3vw, 30px); font-weight: 760; line-height: 1.12; font-stretch: 115%; letter-spacing: -0.01em; }
.sotto { font-size: clamp(18px, 1.6vw, 21px); color: var(--tenue); max-width: 46ch; margin-top: 18px; }

/* pulsanti */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 52px; padding: 0 26px;
       border-radius: 8px; font: 650 17px/1.2 var(--font); text-decoration: none; cursor: pointer; border: 0;
       transition: transform .18s ease, background-color .18s ease, color .18s ease; }
.btn:active { transform: scale(.97); }
.btn-cipria { background: var(--cipria); color: var(--inchiostro); }
.btn-cipria:hover { background: var(--bianco); }
.btn-vuoto { color: var(--bianco); box-shadow: inset 0 0 0 2px var(--bianco); }
.btn-vuoto:hover { background: var(--bianco); color: var(--blu); }
.btn-blu { background: var(--blu); color: var(--bianco); }
.btn-blu:hover { background: var(--inchiostro); }

/* testata */
.testata { background: var(--blu); color: var(--bianco); position: sticky; top: 0; z-index: 50; } /* resta in alto: il pulsante della bozza si vede sempre */
.testata .giro { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-block: 22px; }
.marchio img { width: 132px; }
.menu { display: flex; align-items: center; gap: clamp(16px, 2.4vw, 34px); font-size: 17px; font-weight: 500; }
.menu a:not(.btn) { text-decoration: none; padding-block: 6px; }
.menu a:not(.btn):hover { text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 2px; }
.menu .btn { min-height: 46px; padding: 0 20px; font-size: 16px; }
.solo-telefono { display: none; }

/* apertura */
.apertura { background: var(--blu); color: var(--bianco); padding-bottom: clamp(56px, 8vw, 110px); }
.apertura .giro { display: grid; grid-template-columns: 1.25fr 1fr; gap: clamp(24px, 4vw, 64px); align-items: center; padding-top: clamp(24px, 4vw, 56px); }
.apertura h1 { font-size: clamp(44px, 6vw, 88px); font-weight: 880; line-height: .96; letter-spacing: -0.03em; max-width: 11ch; } /* titolo lungo (26/10): più piccolo, su quattro righe */
.apertura .sotto { color: var(--nebbia); max-width: 40ch; margin-top: 28px; }
.azioni { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.bozza-nota { margin-top: 22px; font-weight: 600; color: var(--cipria); }
.luce { position: relative; aspect-ratio: 1; border-radius: 50%; background: var(--cipria); display: grid; place-items: center; }
.telefono { width: 44%; aspect-ratio: 390 / 844; border-radius: 26px; border: 7px solid var(--inchiostro); background: var(--inchiostro);
            overflow: hidden; transform: rotate(-6deg); box-shadow: 18px 22px 0 color-mix(in srgb, var(--blu) 16%, transparent); }
.telefono img { width: 100%; animation: scorri 16s ease-in-out 1.6s infinite alternate; }
.luce:hover .telefono img { animation-play-state: paused; }
/* la "o" accesa: il cerchio si accende come una lampadina, poi il telefono sale */
.luce { animation: accendi 1s ease-out both; }
.telefono { animation: sali .8s cubic-bezier(.2, .8, .2, 1) .45s both; }
@keyframes accendi { 0% { opacity: .12; } 18% { opacity: .85; } 28% { opacity: .3; } 46%, 100% { opacity: 1; } }
@keyframes sali { from { transform: translateY(40px) rotate(-2deg); opacity: 0; } to { transform: rotate(-6deg); opacity: 1; } }
/* l'immagine è alta 6,49 schermi di telefono: scorre fino a mostrarne l'ultimo */
@keyframes scorri { 0%, 12% { transform: none; } 88%, 100% { transform: translateY(-66.6%); } }

/* lavori */
.lavori { background: var(--cipria); padding-block: clamp(64px, 9vw, 130px); }
.lavori-veri { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 4vw, 56px); margin-top: clamp(36px, 5vw, 64px); }
.lavoro { display: grid; gap: 22px; align-content: start; }
.schermi { position: relative; padding: 0 9% 9% 0; }
.schermi .grande { border-radius: 12px; outline: 3px solid var(--inchiostro); outline-offset: -1px; aspect-ratio: 16 / 10; object-fit: cover; object-position: top; width: 100%; background: var(--bianco); }
.schermi .piccolo { position: absolute; right: 0; bottom: 0; width: 25%; border-radius: 16px; border: 5px solid var(--inchiostro); background: var(--inchiostro); aspect-ratio: 390 / 844; object-fit: cover; object-position: top; }
.lavoro p { color: var(--tenue); max-width: 48ch; }
.lavoro .apri { font-weight: 650; text-decoration-thickness: 2px; text-underline-offset: 5px; justify-self: start; }
.lavoro .apri:hover { color: var(--blu); }

.esempi { margin-top: clamp(80px, 11vw, 150px); display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 2fr); gap: clamp(28px, 4vw, 64px); align-items: start; }
.esempi .sotto { margin-top: 16px; }
.esempi-fila { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(16px, 2vw, 28px); list-style: none; margin: 0; padding: 0; }
.esempio:nth-child(2) { margin-top: 56px; }
.esempio a { display: grid; gap: 14px; align-content: start; text-decoration: none; }
.esempio img { border-radius: 22px; border: 6px solid var(--inchiostro); background: var(--inchiostro); aspect-ratio: 390 / 844; object-fit: cover; object-position: top;
               transition: transform .3s cubic-bezier(.2, .8, .2, 1); }
.esempio a:hover img { transform: translateY(-6px) rotate(-1.5deg); }
.esempio h3 { font-size: 24px; font-weight: 800; font-stretch: 115%; }
.esempio p { color: var(--tenue); font-size: 16px; line-height: 1.5; }
.esempio .apri { font-weight: 650; font-size: 16px; text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 5px; }
.esempio a:hover .apri { color: var(--blu); }

/* pagina dei lavori: chiude con l'invito al preventivo */
.lavori-pagina { padding-top: clamp(44px, 6vw, 88px); }
.lavori-fine { background: var(--blu); color: var(--bianco); padding-block: clamp(56px, 8vw, 110px); }
.lavori-fine .giro { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 28px; }
.lavori-fine .t2 { color: var(--cipria); max-width: 18ch; }

/* cosa facciamo: sei servizi alla pari */
.servizi { background: var(--inchiostro); color: var(--bianco); padding-block: clamp(72px, 10vw, 140px); }
.servizi .t2 { color: var(--cipria); }
.servizi-griglia { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(40px, 5vw, 72px) clamp(28px, 4vw, 64px); margin-top: clamp(44px, 6vw, 80px); }
.servizio h3 { display: flex; align-items: baseline; gap: 14px; }
.servizio h3::before { content: ""; flex: none; width: 14px; height: 14px; border-radius: 50%; background: var(--cipria); transform: translateY(-2px); }
.servizio p { color: var(--nebbia); margin-top: 14px; max-width: 44ch; padding-left: 28px; }
.servizio .servizio-con { margin-top: 6px; color: var(--cipria); font-size: 15px; font-weight: 600; }
.servizio .servizio-con + p { margin-top: 10px; }

/* come funziona: la corrente passa e accende i tre passi */
.passi-sezione { background: var(--nebbia); padding-block: clamp(72px, 10vw, 140px); }
.passi { list-style: none; margin: clamp(44px, 6vw, 80px) 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(24px, 4vw, 56px); position: relative; }
.passi::before, .passi::after { content: ""; position: absolute; left: 13px; right: 0; top: 13px; height: 6px; border-radius: 3px; background: var(--bianco); }
.passi::after { background: var(--blu); transform-origin: left; }
.passo { position: relative; z-index: 1; display: grid; gap: 14px; align-content: start; }
.passo::before { content: ""; width: 32px; height: 32px; border-radius: 50%; background: var(--blu); box-shadow: inset 0 0 0 9px var(--blu), inset 0 0 0 20px var(--cipria); margin-bottom: 14px; }
.passo p { color: var(--tenue); max-width: 34ch; }
.passi-fine { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 28px; margin-top: clamp(44px, 6vw, 72px); }
.passi-fine p { font-weight: 600; }

/* domande */
.domande { padding-block: clamp(72px, 10vw, 140px); }
.domande .giro { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: clamp(32px, 5vw, 80px); align-items: start; }
.elenco { display: grid; gap: 10px; }
.elenco details { background: var(--velo); border-radius: 14px; }
.elenco summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 20px 24px;
                  font-weight: 700; font-stretch: 108%; font-size: 19px; line-height: 1.3; }
.elenco summary::-webkit-details-marker { display: none; }
.elenco summary::after { content: ""; flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--blu)
  url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 28 28'%3E%3Cpath d='M14 8v12M8 14h12' stroke='white' stroke-width='2.4' stroke-linecap='round'/%3E%3C/svg%3E") center / 100%;
  transition: transform .25s ease; }
.elenco details[open] summary::after { transform: rotate(45deg); }
.elenco details p { padding: 0 24px 22px; color: var(--tenue); max-width: 62ch; }

/* modulo */
.richiesta { background: var(--blu); color: var(--bianco); padding-block: clamp(72px, 10vw, 140px); }
.richiesta .giro { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: clamp(32px, 5vw, 80px); align-items: start; }
.richiesta .t2 { color: var(--cipria); }
.richiesta .sotto { color: var(--nebbia); }
.diretto { margin-top: 40px; display: grid; gap: 8px; }
.diretto p { font-weight: 600; }
.diretto a { color: var(--bianco); font-size: 19px; text-underline-offset: 5px; }
.scheda { background: var(--bianco); color: var(--inchiostro); border-radius: 20px; padding: clamp(22px, 3.4vw, 44px); }
.campo { display: grid; gap: 8px; margin-bottom: 22px; }
.campo label, .campo legend { font-weight: 650; font-size: 17px; padding: 0; }
.campo .aiuto { color: var(--tenue); font-size: 15px; line-height: 1.45; }
fieldset.campo { border: 0; margin: 0 0 22px; padding: 0; min-width: 0; }
input[type=text], input[type=email], input[type=tel], textarea {
  width: 100%; font: 400 17px/1.4 var(--font); color: var(--inchiostro); background: var(--bianco);
  border: 2px solid var(--nebbia); border-radius: 8px; padding: 13px 14px; transition: border-color .15s; }
input:focus, textarea:focus { outline: none; border-color: var(--blu); }
textarea { min-height: 96px; resize: vertical; }
input:user-invalid { border-color: #C2185B; }
.scelte { display: flex; flex-wrap: wrap; gap: 8px; }
.scelte label { position: relative; }
.scelte input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.scelte span { display: inline-flex; align-items: center; min-height: 44px; padding: 0 16px; border-radius: 8px; background: var(--velo);
               font-weight: 550; font-size: 16px; transition: background-color .15s, color .15s; }
.scelte input:checked + span { background: var(--blu); color: var(--bianco); }
.scelte input:focus-visible + span { outline: 3px solid var(--blu); outline-offset: 2px; }
.nota { background: var(--cipria-chiara); border-radius: 8px; padding: 12px 14px; font-size: 15px; }
.trappola { position: absolute; left: -9999px; }
.scheda .btn { width: 100%; margin-top: 4px; }
.scheda .btn[disabled] { opacity: .6; cursor: wait; }
.consenso { font-size: 14px; color: var(--tenue); margin-top: 14px; }
.esito { margin-top: 14px; font-weight: 600; }
.esito.errore { color: #B0154F; }
.fatto { display: grid; gap: 14px; text-align: left; }
.fatto::before { content: ""; width: 56px; height: 56px; border-radius: 50%; background: var(--blu); box-shadow: inset 0 0 0 16px var(--blu), inset 0 0 0 40px var(--cipria); }
.fatto h3 { font-size: 30px; font-weight: 860; }

/* piede */
.piede { background: var(--inchiostro); color: var(--nebbia); padding-block: 56px 40px; font-size: 16px; }
.piede .giro { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 28px; }
.piede .marchio img { width: 150px; }
.piede p { margin-top: 14px; }
.piede nav { display: flex; flex-wrap: wrap; gap: 10px 26px; }
.piede nav a { color: var(--bianco); text-underline-offset: 4px; }

/* privacy */
.legale { padding-block: clamp(48px, 7vw, 96px); }
.legale .giro { max-width: 820px; }
.legale h1 { font-size: clamp(40px, 6vw, 72px); font-weight: 880; line-height: 1; }
.legale h2 { font-size: 24px; font-weight: 780; font-stretch: 112%; margin-top: 44px; }
.legale p, .legale li { color: var(--tenue); margin-top: 12px; }
.legale ul { padding-left: 22px; }
.legale .data { margin-top: 18px; }

/* entrate legate allo scorrimento (Chrome, Safari 26, Firefox dalla 159); altrove tutto è già visibile */
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .passi::after { animation: corrente linear both; animation-timeline: view(); animation-range: entry 40% cover 55%; }
    .passo::before { animation: lampada linear both; animation-timeline: view(); animation-range: entry 70% cover 45%; }
  }
}
@keyframes corrente { from { transform: scaleX(0); } }
@keyframes lampada { from { box-shadow: inset 0 0 0 9px var(--bianco), inset 0 0 0 20px var(--bianco); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .luce, .telefono, .telefono img { animation: none; }
}

/* tablet: servizi su due colonne */
@media (max-width: 1100px) {
  .servizi-griglia { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
/* telefono e tablet */
@media (max-width: 900px) {
  .menu a:not(.btn) { display: none; }
  .solo-computer { display: none; }
  .solo-telefono { display: inline; }
  .apertura .giro, .domande .giro, .richiesta .giro, .esempi { grid-template-columns: minmax(0, 1fr); }
  .apertura h1 { max-width: 10ch; }
  .luce { width: min(100%, 440px); justify-self: center; margin-top: 12px; }
  .lavori-veri { grid-template-columns: minmax(0, 1fr); gap: 56px; }
  .passi { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .passi::before, .passi::after { left: 13px; right: auto; top: 13px; bottom: 0; width: 6px; height: auto; }
  .passi::after { transform-origin: top; }
  .passo { grid-template-columns: 32px minmax(0, 1fr); column-gap: 20px; }
  .passo::before { grid-row: span 2; margin: 0; }
  @keyframes corrente { from { transform: scaleY(0); } }
  /* gli esempi diventano una fila da sfogliare col dito, dentro la sezione */
  .esempi-fila { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; gap: 16px; margin-inline: calc(var(--bordo) * -1); padding: 6px var(--bordo) 12px; scrollbar-width: none; }
  .esempi-fila::-webkit-scrollbar { display: none; }
  .esempio { flex: 0 0 68%; scroll-snap-align: center; }
  .esempio:nth-child(2) { margin-top: 0; }
}
@media (max-width: 520px) {
  .servizi-griglia { grid-template-columns: minmax(0, 1fr); }
  body { font-size: 17px; }
  .testata .giro { padding-block: 16px; }
  html { scroll-padding-top: 80px; }
  .marchio img { width: 104px; }
  .azioni .btn { flex: 1 1 100%; }
  .elenco summary { padding: 18px; font-size: 18px; }
  .elenco details p { padding: 0 18px 20px; }
}