/* =========================================================================
   Studio di Geologia Tecnica — Dott. Geol. Massimo Pasquale Fedele
   Foglio di stile unico. Nessuna dipendenza esterna. Nessun cookie.
   Impostazione chiara: sfondi chiari, contrasto dove serve.
   ========================================================================= */

:root {
  /* colori */
  --ink: #23303a;
  --ink-soft: #45555f;
  --ink-faint: #6c7a82;
  --paper: #ffffff;
  --paper-warm: #f6f4ee;
  --paper-warm-2: #eee9df;
  --line: #e4dfd3;
  --line-strong: #d0c8b6;

  /* accenti dal logo: verde, sabbia, azzurro-ardesia */
  --green: #7ab63f;
  --green-deep: #5f9a2c;
  --sand: #d3ac7c;
  --slate: #7fa9b4;
  --slate-deep: #4d7f8c;

  /* accento d'azione */
  --accent: #b0532b;
  --accent-deep: #8c3f1e;
  --accent-tint: #f4e6dc;
  --green-tint: #eef4e3;
  --slate-tint: #e7eef0;
  --focus: #1d6fb8;

  /* misure */
  --container: 1080px;
  --container-narrow: 760px;
  --radius: 10px;
  --radius-lg: 18px;
  --shadow: 0 1px 2px rgba(35,48,58,.05), 0 10px 26px rgba(35,48,58,.07);
  --shadow-lg: 0 2px 6px rgba(35,48,58,.07), 0 22px 55px rgba(35,48,58,.13);
  --gap: clamp(1.5rem, 1rem + 2vw, 3rem);

  /* tipografia fluida */
  --step--1: clamp(0.82rem, 0.79rem + 0.14vw, 0.9rem);
  --step-0:  clamp(1rem, 0.96rem + 0.2vw, 1.06rem);
  --step-1:  clamp(1.18rem, 1.08rem + 0.5vw, 1.4rem);
  --step-2:  clamp(1.42rem, 1.25rem + 0.85vw, 1.9rem);
  --step-3:  clamp(1.75rem, 1.45rem + 1.5vw, 2.5rem);
  --step-4:  clamp(2.1rem, 1.65rem + 2.3vw, 3.3rem);

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Times New Roman", serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.15;
  color: var(--ink);
  margin: 0 0 .5em;
}
h1 { font-size: var(--step-4); letter-spacing: .002em; }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-2); }
h4 { font-size: var(--step-1); }
p  { margin: 0 0 1.1em; }
a  { color: var(--accent-deep); text-underline-offset: .18em; text-decoration-thickness: 1px; }
a:hover { color: var(--accent); }
img, svg { max-width: 100%; height: auto; display: block; }
ul, ol { padding-left: 1.2em; }
li { margin-bottom: .35rem; }
strong { font-weight: 650; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }
small { font-size: var(--step--1); }

:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 3px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 100;
  background: var(--ink); color: #fff; padding: .65rem 1rem;
  border-radius: 0 0 var(--radius) var(--radius); text-decoration: none; transition: top .15s;
}
.skip-link:focus { top: 0; color: #fff; }

.container { width: min(100% - 2.4rem, var(--container)); margin-inline: auto; }
.container-narrow { width: min(100% - 2.4rem, var(--container-narrow)); margin-inline: auto; }

/* ---------------------------------------------------------------- header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.94);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 1rem; min-height: 72px; }
.brand { display: flex; align-items: center; gap: .7rem; text-decoration: none; color: var(--ink); margin-right: auto; }
.brand-mark { width: 58px; height: auto; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.14; }
.brand-text strong { font-family: var(--serif); font-size: 1.05rem; letter-spacing: .005em; white-space: nowrap; }
.brand-text span { font-size: .71rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: .06em; white-space: nowrap; }

.site-nav ul { list-style: none; display: flex; align-items: center; gap: .1rem; margin: 0; padding: 0; }
.site-nav a { white-space: nowrap; }
.site-nav li { margin: 0; }
.site-nav a {
  display: block; padding: .5rem .68rem; border-radius: var(--radius);
  color: var(--ink-soft); text-decoration: none; font-size: .91rem; font-weight: 500;
}
.site-nav a:hover { color: var(--ink); background: var(--paper-warm); }
.site-nav a[aria-current="page"] { color: var(--accent-deep); font-weight: 600; }
.site-nav .nav-cta { background: var(--accent); color: #fff; padding-inline: 1rem; margin-left: .5rem; }
.site-nav .nav-cta:hover { background: var(--accent-deep); color: #fff; }

.nav-toggle { display: none; }

@media (max-width: 1040px) {
  .nav-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 44px; height: 44px; border: 1px solid var(--line-strong);
    background: var(--paper); border-radius: var(--radius); cursor: pointer;
  }
  .nav-toggle-bar, .nav-toggle-bar::before, .nav-toggle-bar::after {
    content: ""; display: block; width: 20px; height: 2px; background: var(--ink);
    transition: transform .2s, opacity .2s;
  }
  .nav-toggle-bar { position: relative; }
  .nav-toggle-bar::before { position: absolute; top: -6px; left: 0; }
  .nav-toggle-bar::after  { position: absolute; top: 6px; left: 0; }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: transparent; }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { transform: translateY(6px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar::after  { transform: translateY(-6px) rotate(-45deg); }

  .site-nav {
    position: absolute; left: 0; right: 0; top: 100%;
    background: var(--paper); border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow); display: none;
  }
  .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; align-items: stretch; gap: 0; padding: .6rem; }
  .site-nav a { padding: .85rem .8rem; font-size: 1rem; }
  .site-nav .nav-cta { margin: .5rem 0 0; text-align: center; }
}

/* ---------------------------------------------------------------- bottoni */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .8rem 1.4rem; border-radius: var(--radius);
  font-weight: 600; font-size: .96rem; text-decoration: none; cursor: pointer;
  border: 1px solid transparent; transition: background .15s, border-color .15s, transform .05s, color .15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-deep); color: #fff; }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--ink); background: var(--paper-warm); color: var(--ink); }

/* ---------------------------------------------------------------- sezioni */
.section { padding-block: clamp(3rem, 2rem + 5vw, 6rem); }
.section-warm { background: var(--paper-warm); }
.section-tight { padding-block: clamp(2rem, 1.5rem + 3vw, 3.5rem); }
.section-head { max-width: 62ch; margin-bottom: var(--gap); }
.eyebrow {
  text-transform: uppercase; letter-spacing: .13em; font-size: .76rem; font-weight: 700;
  color: var(--accent-deep); margin-bottom: .8rem; display: block;
}
.lede { font-size: var(--step-1); color: var(--ink-soft); line-height: 1.55; }
.center { text-align: center; margin-inline: auto; }

/* ---------------------------------------------------------------- hero (chiaro) */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(70% 90% at 88% 0%, var(--green-tint), transparent 60%),
    radial-gradient(60% 80% at 0% 100%, var(--slate-tint), transparent 55%),
    var(--paper-warm);
  border-bottom: 1px solid var(--line);
}
.hero-inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(2rem, 1rem + 4vw, 4rem);
  align-items: center; padding-block: clamp(3.25rem, 2rem + 6vw, 6rem);
}
.hero h1 { color: var(--ink); margin-bottom: .35em; }
.hero .kicker {
  text-transform: uppercase; letter-spacing: .14em; font-size: .8rem; font-weight: 700;
  color: var(--green-deep); margin-bottom: 1.2rem; display: block;
}
.hero p { color: var(--ink-soft); font-size: var(--step-1); line-height: 1.55; max-width: 48ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.hero-figure img, .hero-figure svg {
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  width: 100%; background: #fff; border: 1px solid var(--line);
}
.hero-figure img { max-height: 520px; object-fit: cover; }
@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-figure { order: -1; max-width: 460px; }
}

.trust-strip {
  position: relative; z-index: 1;
  display: flex; flex-wrap: wrap; gap: .55rem 1.8rem;
  padding: 1.1rem 0 0; border-top: 1px solid var(--line); margin-top: 2.4rem;
  font-size: .86rem; color: var(--ink-faint);
}
.trust-strip span { display: inline-flex; align-items: center; gap: .5rem; }
.trust-strip span::before { content: ""; width: 7px; height: 7px; border-radius: 999px; background: var(--green); flex: none; }

/* ---------------------------------------------------------------- griglie / card */
.grid { display: grid; gap: var(--gap); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 1.6rem; box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: .45rem;
}
.section-warm .card { background: #fff; }
.card h3 { font-size: var(--step-1); margin-bottom: .15rem; }
.card p { color: var(--ink-soft); font-size: .95rem; margin-bottom: 0; }
.card ul { color: var(--ink-soft); font-size: .93rem; margin: .2rem 0 0; }
.card-icon {
  width: 44px; height: 44px; border-radius: 11px; background: var(--green-tint);
  color: var(--green-deep); display: grid; place-items: center; margin-bottom: .55rem;
}
.card-icon svg { width: 24px; height: 24px; }
.card-link { margin-top: auto; padding-top: .9rem; font-weight: 600; font-size: .92rem; text-decoration: none; }
.card-link::after { content: " \2192"; }

a.card { text-decoration: none; color: inherit; transition: border-color .15s, transform .12s, box-shadow .15s; }
a.card:hover { border-color: var(--line-strong); transform: translateY(-3px); box-shadow: var(--shadow-lg); }

.step-num {
  font-family: var(--serif); font-size: 1.6rem; color: var(--accent);
  border-bottom: 2px solid var(--accent-tint); padding-bottom: .25rem; margin-bottom: .5rem; width: fit-content;
}

/* ---------------------------------------------------------------- pagine di testo */
.page-head {
  background:
    radial-gradient(60% 100% at 92% 0%, var(--green-tint), transparent 60%),
    var(--paper-warm);
  border-bottom: 1px solid var(--line);
  padding-block: clamp(2.4rem, 1.5rem + 4vw, 4.5rem);
}
.breadcrumb { font-size: .82rem; color: var(--ink-faint); margin-bottom: .8rem; }
.breadcrumb a { color: var(--ink-faint); }
.page-head h1 { margin-bottom: .3em; }
.page-head p { color: var(--ink-soft); font-size: var(--step-1); max-width: 62ch; margin-bottom: 0; }

.prose { max-width: 70ch; }
.prose > :first-child { margin-top: 0; }
.prose h2 { margin-top: 2.6rem; }
.prose h3 { margin-top: 1.9rem; font-size: var(--step-1); }
.prose ul li, .prose ol li { margin-bottom: .45rem; }

.callout {
  border-left: 3px solid var(--green); background: var(--green-tint);
  padding: 1rem 1.25rem; border-radius: 0 var(--radius) var(--radius) 0; margin: 1.7rem 0;
  font-size: .95rem; color: var(--ink-soft);
}
.callout strong { color: var(--ink); }
.callout :last-child { margin-bottom: 0; }
.callout-accent { border-left-color: var(--accent); background: var(--accent-tint); }

.info-list { display: grid; grid-template-columns: max-content 1fr; gap: .55rem 1.5rem; margin: 0; }
.info-list dt { font-weight: 650; color: var(--ink); }
.info-list dd { margin: 0; color: var(--ink-soft); }
@media (max-width: 520px) {
  .info-list { grid-template-columns: 1fr; gap: .1rem 0; }
  .info-list dd { margin-bottom: .7rem; }
}

.tags { display: flex; flex-wrap: wrap; gap: .4rem; list-style: none; padding: 0; margin: 1rem 0 0; }
.tags li { font-size: .77rem; font-weight: 600; padding: .3rem .65rem; border-radius: 999px; background: var(--paper-warm-2); color: var(--ink-soft); margin: 0; }
.tags a { text-decoration: none; color: inherit; }

.checklist { list-style: none; padding: 0; margin: 1.2rem 0; }
.checklist li { position: relative; padding-left: 1.9rem; margin-bottom: .7rem; }
.checklist li::before {
  content: ""; position: absolute; left: 0; top: .35em; width: 12px; height: 7px;
  border-left: 2px solid var(--green-deep); border-bottom: 2px solid var(--green-deep);
  transform: rotate(-45deg);
}

.split { display: grid; grid-template-columns: .9fr 1.1fr; gap: var(--gap); align-items: center; }
.split-text-first { grid-template-columns: 1.1fr .9fr; }
@media (max-width: 820px) { .split, .split-text-first { grid-template-columns: 1fr; } }

/* ---------------------------------------------------------------- foto */
figure.photo { margin: 0; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; background: #fff; box-shadow: var(--shadow); }
figure.photo img { width: 100%; display: block; object-fit: cover; aspect-ratio: 16 / 10; background: var(--paper-warm-2); }
figure.photo.portrait { max-width: 420px; }
figure.photo.portrait img { aspect-ratio: 4 / 5; }
figure.photo.tall { max-width: 380px; margin-inline: auto; }
figure.photo.tall img { aspect-ratio: auto; object-fit: contain; }
figure.photo figcaption { padding: .8rem 1rem; font-size: .85rem; color: var(--ink-faint); }

/* stato "in attesa di fotografia": icona centrata su fondo neutro (di norma non usato) */
img.is-placeholder { object-fit: contain !important; padding: 12%; background: var(--paper-warm-2); }

/* ---------------------------------------------------------------- galleria */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
@media (max-width: 880px) { .gallery-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .gallery-grid { grid-template-columns: 1fr; } }
.gallery-item {
  border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden;
  background: #fff; cursor: zoom-in; text-align: left; padding: 0; font: inherit; color: inherit;
  display: flex; flex-direction: column; transition: border-color .15s, box-shadow .15s, transform .12s;
}
.gallery-item:hover { border-color: var(--line-strong); box-shadow: var(--shadow); transform: translateY(-2px); }
.gallery-item img { aspect-ratio: 8 / 5; object-fit: cover; width: 100%; background: var(--paper-warm); }
.gallery-cap { padding: .95rem 1.05rem 1.15rem; }
.gallery-cap strong { display: block; font-family: var(--serif); font-size: 1.02rem; margin-bottom: .2rem; }
.gallery-cap span { font-size: .83rem; color: var(--ink-faint); }

.lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(20,26,30,.8); display: grid; place-items: center; padding: 1.5rem; }
.lightbox[hidden] { display: none; }
.lightbox-body { max-width: 900px; width: 100%; background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.lightbox-body img { width: 100%; }
.lb-cap { padding: 1rem 1.2rem; font-size: .95rem; }
.lb-cap strong { font-family: var(--serif); }
.lightbox-close {
  position: absolute; top: 1rem; right: 1rem; width: 46px; height: 46px; border-radius: 999px;
  border: 0; background: #fff; font-size: 1.4rem; line-height: 1; cursor: pointer; box-shadow: var(--shadow);
}

/* ---------------------------------------------------------------- contatti */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: var(--gap); align-items: start; }
@media (max-width: 840px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-cards .card { margin-bottom: 1rem; }
.contact-cards .card p { color: var(--ink); }
.contact-cards a { font-weight: 600; text-decoration: none; }
.contact-cards a:hover { text-decoration: underline; }

.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(1.4rem, 1rem + 2vw, 2.2rem); box-shadow: var(--shadow); }
.form-field { margin-bottom: 1.1rem; display: flex; flex-direction: column; gap: .35rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
@media (max-width: 520px) { .form-row { grid-template-columns: 1fr; gap: 0; } }
.form-field label { font-weight: 600; font-size: .9rem; }
.form-field input, .form-field textarea {
  font: inherit; padding: .7rem .8rem; border: 1px solid var(--line-strong);
  border-radius: var(--radius); background: #fff; color: var(--ink); width: 100%;
}
.form-field textarea { min-height: 150px; resize: vertical; }
.form-field input:focus, .form-field textarea:focus {
  border-color: var(--focus); outline: none; box-shadow: 0 0 0 3px rgba(29,111,184,.15);
}
.form-consent { display: flex; gap: .6rem; align-items: flex-start; font-size: .87rem; color: var(--ink-soft); margin-bottom: 1.2rem; }
.form-consent input { margin-top: .25rem; flex: none; }
.hp { position: absolute !important; left: -5000px !important; }

/* ---------------------------------------------------------------- CTA band (chiara) */
.cta-band {
  background: var(--accent-tint);
  border-top: 3px solid var(--accent);
  text-align: center;
}
.cta-band h2 { color: var(--ink); }
.cta-band p { color: var(--ink-soft); max-width: 52ch; margin-inline: auto; }

/* ---------------------------------------------------------------- footer (chiaro) */
.site-footer { background: var(--paper-warm); color: var(--ink-soft); font-size: .9rem; padding-block: 3rem 1.8rem; border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1.2fr; gap: 2rem; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; gap: 1.7rem; } }
.site-footer h2 { color: var(--ink); font-size: .78rem; text-transform: uppercase; letter-spacing: .12em; font-family: var(--sans); font-weight: 700; margin-bottom: .9rem; }
.site-footer a { color: var(--ink-soft); text-decoration: none; }
.site-footer a:hover { color: var(--accent-deep); text-decoration: underline; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .45rem; }
.site-footer li { margin: 0; }
.footer-brand { display: flex; flex-direction: column; gap: .5rem; }
.footer-brand .footer-logo { display: flex; align-items: center; gap: .6rem; }
.footer-brand .footer-logo img { width: 48px; height: auto; }
.footer-brand strong { color: var(--ink); font-family: var(--serif); font-size: 1.05rem; }
.footer-brand p { color: var(--ink-faint); margin-bottom: 0; }
.footer-legal {
  border-top: 1px solid var(--line); margin-top: 2.3rem; padding-top: 1.4rem;
  display: flex; flex-wrap: wrap; gap: .4rem 1.4rem; justify-content: space-between;
  color: var(--ink-faint); font-size: .82rem;
}
.footer-legal a { color: var(--ink-faint); }

/* ---------------------------------------------------------------- utility */
.stack-sm > * + * { margin-top: .6rem; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ---------------------------------------------------------------- print */
@media print {
  .site-header, .site-footer, .nav-toggle, .cta-band, .hero-actions, .lightbox, .skip-link { display: none !important; }
  body { color: #000; background: #fff; }
  a { color: #000; text-decoration: underline; }
  .card, .form-card, figure.photo { box-shadow: none; border-color: #999; }
}