/* Idroprev — sito vetrina statico
   Palette ripresa dal tema Drupal "palta" (2020): blu #1181F0, ciano #1AAEFC, verde #378E8B. */

@font-face {
  font-family: "Source Sans 3";
  src: url("../fonts/source-sans-3-latin.woff2") format("woff2");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Source Sans 3";
  src: url("../fonts/source-sans-3-latin-ext.woff2") format("woff2");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
  --blu: #1181f0;
  --blu-scuro: #0a63bf;
  --ciano: #1aaefc;
  --verde: #378e8b;
  --verde-scuro: #2a6d6b;
  --inchiostro: #0f2b3a;
  --testo: #44525e;
  --testo-tenue: #66737e;
  --bordo: #dfe7ec;
  --chiaro: #f2f7f9;
  --bianco: #fff;
  --gradiente: linear-gradient(115deg, #0d84cc 0%, #0f74ad 45%, #2f7b78 100%);
  --ombra: 0 1px 2px rgba(15, 43, 58, .06), 0 8px 24px rgba(15, 43, 58, .08);
  --raggio: 14px;
  --larghezza: 1180px;
  --gutter: clamp(16px, 4vw, 40px);
  --header-h: 72px;
  --font: "Source Sans 3", "Source Sans Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; animation: none !important; } }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--testo);
  background: var(--bianco);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blu-scuro); text-underline-offset: .18em; }
a:hover { color: var(--blu); }
strong { color: var(--inchiostro); font-weight: 650; }
h1, h2, h3, h4 { color: var(--inchiostro); line-height: 1.15; margin: 0 0 .6em; font-weight: 700; letter-spacing: -.01em; }
h2 { font-size: clamp(2rem, 1.4rem + 2.2vw, 2.75rem); }
h3 { font-size: 1.35rem; }
p { margin: 0 0 1em; }
:focus-visible { outline: 3px solid var(--ciano); outline-offset: 3px; border-radius: 4px; }

.salta { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--inchiostro); color: #fff; padding: 10px 16px; border-radius: 8px; }
.salta:focus { top: 12px; color: #fff; }

.contenitore { width: 100%; max-width: calc(var(--larghezza) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter); }
.sezione { padding: clamp(64px, 9vw, 112px) 0; }
.sezione--chiara { background: var(--chiaro); }
.occhiello { display: inline-block; font-size: .85rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--verde); margin-bottom: .75rem; }
.intro { font-size: 1.25rem; max-width: 46rem; }
.titolo-sezione { max-width: 46rem; margin-bottom: clamp(32px, 5vw, 56px); }

/* ---------- Pulsanti ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5em;
  font: inherit; font-weight: 650; font-size: 1rem; line-height: 1;
  padding: .95em 1.5em; border-radius: 999px; border: 2px solid transparent;
  text-decoration: none; cursor: pointer; transition: background .2s, color .2s, border-color .2s, transform .2s;
}
.btn svg { width: 1.1em; height: 1.1em; flex: none; }
.btn--primario { background: var(--blu); color: #fff; }
.btn--primario:hover { background: var(--blu-scuro); color: #fff; }
.btn--bianco { background: #fff; color: var(--blu-scuro); }
.btn--bianco:hover { background: var(--chiaro); color: var(--blu-scuro); }
.btn--contorno { border-color: rgba(255, 255, 255, .7); color: #fff; }
.btn--contorno:hover { background: rgba(255, 255, 255, .12); color: #fff; border-color: #fff; }
.btn:active { transform: translateY(1px); }

/* ---------- Header ---------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 50; height: var(--header-h);
  color: #fff; transition: background .25s, box-shadow .25s, color .25s;
}
.header--pieno, .menu-aperto .header, .senza-hero .header { background: rgba(255, 255, 255, .97); color: var(--inchiostro); box-shadow: 0 1px 0 var(--bordo), 0 6px 20px rgba(15, 43, 58, .06); }
.header .contenitore { height: 100%; display: flex; align-items: center; gap: 24px; }
.logo { color: inherit; display: inline-flex; align-items: center; flex: none; }
.logo svg { width: 128px; height: auto; fill: currentColor; }
.header--pieno .logo, .menu-aperto .header .logo, .senza-hero .header .logo { color: var(--blu); }

.nav { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px; }
.nav a { color: inherit; text-decoration: none; font-weight: 600; font-size: 1rem; }
.nav ul a { display: block; padding: 8px 14px; border-radius: 999px; transition: background .2s; }
.nav ul a:hover { background: rgba(255, 255, 255, .15); }
.header--pieno .nav ul a:hover { background: var(--chiaro); }
.nav ul a[aria-current] { box-shadow: inset 0 -2px 0 currentColor; border-radius: 0; }
.nav .btn { margin-left: 8px; padding: .7em 1.2em; }
.header:not(.header--pieno) .nav .btn--primario { background: #fff; color: var(--blu-scuro); }

.menu-btn { display: none; margin-left: auto; background: none; border: 0; color: inherit; padding: 8px; cursor: pointer; border-radius: 8px; }
.menu-btn svg { width: 28px; height: 28px; display: block; }
.menu-btn .chiudi { display: none; }
.menu-aperto .menu-btn .apri { display: none; }
.menu-aperto .menu-btn .chiudi { display: block; }

@media (max-width: 960px) {
  .js .menu-btn { display: block; }
  .js .nav {
    position: fixed; inset: var(--header-h) 0 auto 0; flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; color: var(--inchiostro); padding: 8px var(--gutter) 24px;
    box-shadow: 0 16px 30px rgba(15, 43, 58, .12); border-top: 1px solid var(--bordo);
    transform: translateY(-8px); opacity: 0; visibility: hidden; transition: opacity .2s, transform .2s, visibility .2s;
  }
  .menu-aperto .nav { transform: none; opacity: 1; visibility: visible; }
  .js .nav ul { flex-direction: column; }
  .js .nav ul a { padding: 14px 4px; border-radius: 0; border-bottom: 1px solid var(--bordo); font-size: 1.125rem; }
  .js .nav ul a:hover { background: none; color: var(--blu); }
  .js .nav ul a[aria-current] { box-shadow: none; color: var(--blu); }
  .js .nav .btn { margin: 20px 0 0; justify-content: center; padding: 1em; }
  .js .header .nav .btn--primario { background: var(--blu); color: #fff; }
  /* senza JS: il menu resta visibile e va a capo */
  html:not(.js) .header { position: absolute; height: auto; padding: 12px 0; }
  html:not(.js) .header .contenitore { flex-wrap: wrap; }
  html:not(.js) .nav { flex-wrap: wrap; margin-left: 0; }
  html:not(.js) .nav ul { flex-wrap: wrap; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative; isolation: isolate; color: #fff; overflow: hidden;
  background: var(--gradiente);
}
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: url("../img/mappa-tanaro-1920.webp") center / cover no-repeat;
  mix-blend-mode: multiply; opacity: .2;
}
@media (max-width: 960px) { .hero::before { background-image: url("../img/mappa-tanaro-960.webp"); } }
.hero::after {
  content: ""; position: absolute; inset: auto 0 -1px 0; height: clamp(40px, 6vw, 90px); z-index: -1;
  background: #fff; clip-path: polygon(0 100%, 100% 0, 100% 100%);
}
.hero h1, .hero h2, .hero strong { color: #fff; }

.hero--home { min-height: min(100svh, 860px); display: flex; align-items: center; padding: calc(var(--header-h) + 48px) 0 clamp(96px, 12vw, 160px); }
.hero--home .contenitore { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .9fr); gap: clamp(32px, 6vw, 80px); align-items: center; }
.hero h1 { font-size: clamp(2.4rem, 1.4rem + 3.6vw, 4rem); font-weight: 750; letter-spacing: -.02em; margin-bottom: .45em; text-wrap: balance; }
.hero .occhiello { color: #bfeaff; }
.hero__testo { font-size: clamp(1.15rem, 1rem + .5vw, 1.35rem); max-width: 36rem; color: rgba(255, 255, 255, .92); }
.hero__azioni { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.catena {
  background: rgba(8, 44, 66, .28); border: 1px solid rgba(255, 255, 255, .22); border-radius: 20px;
  padding: 28px; backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.catena__titolo { font-size: .85rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: #bfeaff; margin: 0 0 18px; }
.catena ol { list-style: none; margin: 0; padding: 0; position: relative; }
.catena li { position: relative; display: grid; grid-template-columns: 44px 1fr; gap: 14px; align-items: center; padding: 10px 0; }
.catena li:not(:last-child)::after { content: ""; position: absolute; left: 21px; top: 50px; bottom: -14px; width: 2px; background: rgba(255, 255, 255, .3); }
.catena__icona { width: 44px; height: 44px; border-radius: 12px; background: rgba(255, 255, 255, .16); display: grid; place-items: center; }
.catena__icona svg { width: 24px; height: 24px; stroke: #fff; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.catena b { display: block; color: #fff; font-weight: 650; line-height: 1.25; }
.catena small { display: block; color: rgba(255, 255, 255, .78); font-size: .95rem; line-height: 1.35; }
.catena__nota { margin: 16px 0 0; padding-top: 16px; border-top: 1px solid rgba(255, 255, 255, .2); font-size: 1rem; color: rgba(255, 255, 255, .88); }
.catena__nota strong { font-size: 1.6rem; vertical-align: -.1em; margin-right: .2em; }

.hero--pagina { padding: calc(var(--header-h) + clamp(48px, 7vw, 88px)) 0 clamp(88px, 11vw, 140px); }
.hero--pagina h1 { margin-bottom: .3em; }

@media (max-width: 860px) {
  .hero--home { min-height: 0; }
  .hero--home .contenitore { grid-template-columns: 1fr; }
}

/* ---------- Chi siamo: tre colonne ---------- */
.tre-col { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(24px, 3vw, 40px); }
.tre-col article { border-top: 3px solid var(--blu); padding-top: 24px; }
.tre-col article:nth-child(2) { border-color: var(--ciano); }
.tre-col article:nth-child(3) { border-color: var(--verde); }
.tre-col h3 { font-size: 1.5rem; }
.tre-col p { font-size: 1.0625rem; }
@media (max-width: 900px) { .tre-col { grid-template-columns: 1fr; } }

/* ---------- La squadra ---------- */
.squadra { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(32px, 6vw, 80px); align-items: start; }
.squadra__frase { font-size: clamp(1.3rem, 1.1rem + .7vw, 1.6rem); line-height: 1.5; color: var(--inchiostro); margin: 0 0 28px; }
.discipline { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.discipline li { background: #fff; border: 1px solid var(--bordo); border-radius: 999px; padding: 8px 16px; font-weight: 600; color: var(--inchiostro); font-size: 1rem; display: inline-flex; align-items: center; gap: 8px; }
.discipline li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--ciano); }
@media (max-width: 860px) { .squadra { grid-template-columns: 1fr; } }

/* ---------- Servizi ---------- */
.servizi-lista { list-style: none; margin: 0 0 clamp(56px, 8vw, 96px); padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; counter-reset: servizio; }
.servizi-lista li {
  counter-increment: servizio; position: relative; background: #fff; border: 1px solid var(--bordo); border-radius: var(--raggio);
  padding: 24px 24px 24px 76px; font-size: 1.0625rem; line-height: 1.45; color: var(--inchiostro); font-weight: 550; min-height: 104px; display: flex; align-items: center;
}
.servizi-lista li::before {
  content: counter(servizio, decimal-leading-zero); position: absolute; left: 22px; top: 50%; transform: translateY(-50%);
  width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center;
  background: var(--chiaro); color: var(--blu-scuro); font-weight: 750; font-size: .95rem;
}
@media (max-width: 960px) { .servizi-lista { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .servizi-lista { grid-template-columns: 1fr; } }

.funzionamento { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: clamp(32px, 5vw, 72px); align-items: start; margin-bottom: clamp(56px, 8vw, 96px); }
.fasi { list-style: none; margin: 28px 0 0; padding: 0; display: grid; gap: 20px; }
.fase { position: relative; padding: 22px 24px 6px 24px; border-radius: var(--raggio); background: var(--chiaro); border-left: 4px solid var(--blu); }
.fase--2 { border-left-color: var(--verde); }
.fase h4 { font-size: 1.15rem; margin-bottom: .5em; display: flex; align-items: baseline; gap: 10px; }
.fase h4 span { font-size: .8rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--blu-scuro); }
.fase--2 h4 span { color: var(--verde-scuro); }
.fase p { font-size: 1.0625rem; }

.figure-servizi { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; position: sticky; top: calc(var(--header-h) + 24px); }
figure { margin: 0; }
.figura img { border-radius: 10px; border: 1px solid var(--bordo); background: #fff; width: 100%; }
.figura figcaption { font-size: .9rem; line-height: 1.4; color: var(--testo-tenue); margin-top: 10px; }
@media (max-width: 960px) {
  .funzionamento { grid-template-columns: 1fr; }
  .figure-servizi { position: static; }
}
@media (max-width: 480px) { .figure-servizi { grid-template-columns: 1fr; } }

.destinatari { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.destinatario { border-radius: var(--raggio); padding: clamp(24px, 3vw, 36px); background: var(--inchiostro); color: rgba(255, 255, 255, .85); }
.destinatario:nth-child(2) { background: linear-gradient(135deg, #1d6f6c, #2f7b78); }
.destinatario h4 { color: #fff; font-size: 1.35rem; }
.destinatario strong { color: #fff; }
.destinatario p { margin: 0; font-size: 1.0625rem; }
.destinatario svg { width: 36px; height: 36px; stroke: #8fdcff; fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 16px; }
.destinatario:nth-child(2) svg { stroke: #b6f0e7; }
@media (max-width: 760px) { .destinatari { grid-template-columns: 1fr; } }

.sotto-titolo { font-size: clamp(1.5rem, 1.2rem + 1vw, 1.9rem); margin-bottom: .8em; }

/* ---------- Documentazione ---------- */
.documenti { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); gap: 16px; }
.documento {
  display: grid; grid-template-columns: 48px 1fr; gap: 16px; align-items: start; height: 100%;
  background: #fff; border: 1px solid var(--bordo); border-radius: var(--raggio); padding: 22px;
  text-decoration: none; color: var(--testo); transition: border-color .2s, box-shadow .2s, transform .2s;
}
.documento:hover { border-color: var(--blu); box-shadow: var(--ombra); transform: translateY(-2px); color: var(--testo); }
.documento .documento__icona { width: 48px; height: 56px; border-radius: 6px; background: var(--chiaro); color: var(--blu-scuro); display: flex; align-items: flex-end; justify-content: center; padding-bottom: 8px; font-size: .7rem; font-weight: 800; letter-spacing: .05em; position: relative; }
.documento__icona::before { content: ""; position: absolute; top: 0; right: 0; border-style: solid; border-width: 0 14px 14px 0; border-color: transparent #fff var(--bordo) transparent; }
.documento--evidenza .documento__icona { background: var(--blu); color: #fff; }
.documento b { display: block; color: var(--inchiostro); font-weight: 650; line-height: 1.3; margin-bottom: 4px; }
.documento span { display: block; font-size: .975rem; line-height: 1.4; }
.documento small { display: block; margin-top: 8px; font-size: .85rem; color: var(--testo-tenue); }

/* ---------- Contatti ---------- */
.contatti { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 32px; align-items: center;
  background: var(--gradiente); color: rgba(255, 255, 255, .9); border-radius: 24px; padding: clamp(32px, 5vw, 64px); position: relative; overflow: hidden; isolation: isolate; }
.contatti::before { content: ""; position: absolute; inset: 0; z-index: -1; background: url("../img/mappa-tanaro-960.webp") center / cover; mix-blend-mode: multiply; opacity: .16; }
.contatti h2 { color: #fff; }
.contatti p { margin: 0; font-size: 1.2rem; max-width: 34rem; }
.contatti__email { display: inline-block; margin-top: 16px; font-size: clamp(1.4rem, 1rem + 1.5vw, 2rem); font-weight: 700; color: #fff; text-decoration-thickness: 2px; word-break: break-word; }
.contatti__email:hover { color: #dff4ff; }
@media (max-width: 760px) { .contatti { grid-template-columns: 1fr; } }

/* ---------- Pagina Distribuzione dati ---------- */
.dist { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: clamp(32px, 5vw, 72px); align-items: start; }
.dist__testo p { font-size: 1.15rem; }
.dist__testo .figura { margin: 40px 0; }
.richiamo { font-size: 1.25rem !important; font-weight: 650; color: var(--inchiostro); border-left: 4px solid var(--ciano); padding-left: 16px; }
.demo { position: sticky; top: calc(var(--header-h) + 24px); background: #fff; border: 1px solid var(--bordo); border-radius: 20px; padding: 32px 28px; box-shadow: var(--ombra); text-align: center; }
.demo__logo { width: 64px; height: 64px; margin: 0 auto 16px; }
.demo h2 { font-size: 1.75rem; margin-bottom: .4em; }
.demo p { font-size: 1.0625rem; }
.credenziali { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; text-align: left; background: var(--chiaro); border-radius: 10px; padding: 14px 18px; margin: 20px 0; font-size: 1rem; }
.credenziali dt { color: var(--testo-tenue); }
.credenziali dd { margin: 0; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: var(--inchiostro); font-weight: 600; }
.demo .btn { width: 100%; justify-content: center; }
.demo__clienti { margin: 20px 0 0; padding-top: 18px; border-top: 1px solid var(--bordo); font-size: 1rem !important; }
@media (max-width: 900px) {
  .dist { grid-template-columns: 1fr; }
  .demo { position: static; }
}

/* ---------- Footer ---------- */
.footer { background: var(--inchiostro); color: rgba(255, 255, 255, .75); padding: 64px 0 32px; font-size: 1rem; }
.footer a { color: #fff; }
.footer__griglia { display: grid; grid-template-columns: 1.2fr 1fr 1.6fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, .12); }
.footer .logo svg { width: 120px; color: #fff; }
.footer h2 { font-size: .85rem; letter-spacing: .12em; text-transform: uppercase; color: rgba(255, 255, 255, .6); margin-bottom: 14px; font-weight: 700; }
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { margin-bottom: 6px; }
.footer ul a { text-decoration: none; }
.footer ul a:hover { text-decoration: underline; }
.partner { display: flex; flex-wrap: wrap; align-items: center; gap: 28px; }
.partner a, .partner span { display: block; opacity: .9; transition: opacity .2s; }
.partner a:hover { opacity: 1; }
.partner img { height: 40px; width: auto; }
.partner .partner__git { background: #fff; border-radius: 8px; padding: 4px; }
.partner .partner__git img { height: 36px; }
.footer__fondo { padding-top: 24px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: .9rem; color: rgba(255, 255, 255, .55); }
@media (max-width: 860px) { .footer__griglia { grid-template-columns: 1fr 1fr; } .footer__griglia > :first-child { grid-column: 1 / -1; } }
@media (max-width: 520px) { .footer__griglia { grid-template-columns: 1fr; } }

/* ---------- 404 ---------- */
.errore { min-height: 70vh; display: grid; place-items: center; text-align: center; padding: calc(var(--header-h) + 48px) var(--gutter) 64px; }
.errore h1 { font-size: clamp(2.5rem, 2rem + 3vw, 4rem); }

.footer__descr { margin-top: 16px; }