/* ABAS — Comitato Abbattimento Barriere Architettoniche Siracusa
   Palette: bordeaux + crema avorio + terracotta.
   Riferimento semantico: mood "documento civile / manifesto rivendicativo"
   (carta di lettera ufficiale, ceralacca rossa, tipografia stampata).
   Distintivo da: Aretusapedia/Consulta (blu istituzionale), Tecnoaccess (dark+arancione).
   Vincolo: WCAG 2.2 AA minimo, AAA dove possibile. */

:root {
  --primario: #7a1620;          /* bordeaux profondo — su crema 9:1 AAA */
  --primario-hover: #921a26;
  --accent: #c8553d;            /* terracotta — su crema 4.5:1 AA */
  --accent-hover: #d96b54;
  --accent-testo: #ffffff;      /* su accent — bianco, ratio 4.5:1 AA testo grande */
  --alert: #7a1620;             /* riusiamo bordeaux come alert (coerenza palette) */
  --testo: #1a1a1a;             /* su crema 15:1 AAA */
  --testo-2: #4a4a4a;           /* su crema 8:1 AAA */
  --bordo: #d4ccc0;             /* crema scura */
  --sfondo: #faf6f0;            /* crema chiaro — base mood "documento civile" */
  --sfondo-2: #f0ebe3;          /* crema medio per alt sezioni */
  --sfondo-3: #e6e0d6;
  --focus: #7a1620;             /* outline focus = bordeaux */
  --max-w: 72rem;
  --max-text-w: 42rem;
  --raggio: 6px;
  --gap: 1.5rem;
}

* { box-sizing: border-box; }

html { font-size: 112.5%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation: none !important; transition: none !important; } }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  color: var(--testo);
  background: var(--sfondo);
  line-height: 1.6;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}

/* Skip link — primo elemento focusable per chi usa tastiera/screen reader */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--accent);
  color: var(--accent-testo);
  padding: 0.75rem 1.25rem;
  z-index: 1000;
  font-weight: 700;
  text-decoration: none;
}
.skip-link:focus { top: 0; }

/* Focus visibile robusto */
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 3px;
}

/* Header */
.site-header {
  background: var(--primario);
  color: #fff;
  border-bottom: 4px solid var(--accent);
}
.site-header__bar {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #fff;
}
.brand__mark {
  width: 44px; height: 44px;
  background: var(--accent);
  color: var(--accent-testo);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 1rem;
  border-radius: 4px;
  letter-spacing: 0.05em;
}
.brand__name {
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.2;
}
.brand__sub {
  display: block;
  font-weight: 400;
  font-size: 0.85rem;
  opacity: 0.85;
}

/* Navigazione principale */
.site-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}
.site-nav a {
  display: inline-block;
  padding: 0.55rem 0.85rem;
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  border-radius: var(--raggio);
  border: 2px solid transparent;
}
.site-nav a:hover {
  background: var(--primario-hover);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.site-nav a[aria-current="page"] {
  background: var(--accent);
  color: var(--accent-testo);
  font-weight: 700;
}

/* Hero */
.hero {
  background: var(--primario);
  color: #fff;
  padding: 3.5rem 1.25rem;
  position: relative;
}
.hero::after {
  /* striscia diagonale arancio-nero stile segnaletica cantiere, bordo basso */
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 8px;
  background-image: repeating-linear-gradient(
    135deg,
    var(--accent) 0,
    var(--accent) 12px,
    var(--primario) 12px,
    var(--primario) 24px
  );
}
.hero__inner { max-width: var(--max-w); margin: 0 auto; }
.hero h1 {
  font-size: clamp(1.75rem, 4vw + 1rem, 2.75rem);
  line-height: 1.2;
  margin: 0 0 1rem;
}
.hero p {
  max-width: var(--max-text-w);
  font-size: 1.15rem;
  margin: 0 0 1.5rem;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* Bottoni */
.btn {
  display: inline-block;
  padding: 0.85rem 1.5rem;
  font-size: 1rem;
  font-weight: 700;
  border: 2px solid transparent;
  border-radius: var(--raggio);
  text-decoration: none;
  cursor: pointer;
  line-height: 1.2;
  font-family: inherit;
}
.btn--primary {
  background: var(--accent);
  color: var(--accent-testo);
  border-color: var(--accent);
}
.btn--primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn--ghost {
  background: transparent;
  color: #fff;
  border-color: #fff;
}
.btn--ghost:hover { background: #fff; color: var(--primario); }
.btn--secondary {
  background: var(--primario);
  color: #fff;
  border-color: var(--primario);
}
.btn--secondary:hover { background: var(--primario-hover); border-color: var(--primario-hover); }

/* Main + sezioni */
main { display: block; }
.section {
  padding: 3rem 1.25rem;
}
.section--alt { background: var(--sfondo-2); }
.section__inner { max-width: var(--max-w); margin: 0 auto; }
.section__inner--narrow { max-width: var(--max-text-w); margin: 0 auto; }
.section h2 {
  font-size: clamp(1.5rem, 2vw + 1rem, 2rem);
  margin: 0 0 0.5rem;
  color: var(--primario);
  line-height: 1.25;
}
.section h3 {
  font-size: 1.25rem;
  margin: 1.75rem 0 0.5rem;
  color: var(--primario);
}
.section p, .section li { font-size: 1.05rem; }
.section a { color: var(--primario); text-decoration: underline; text-decoration-color: var(--accent); text-decoration-thickness: 2px; text-underline-offset: 3px; }
.section a:hover { color: var(--accent-hover); text-decoration-color: var(--accent-hover); }

/* Lead */
.lead { font-size: 1.2rem; color: var(--testo-2); }

/* Card grid */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--gap);
  margin: 2rem 0;
}
.card {
  background: #fff;
  border: 1px solid var(--bordo);
  border-top: 4px solid var(--accent);
  border-radius: var(--raggio);
  padding: 1.5rem;
}
.card h3 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }

/* Casi simbolo (mini-callout) */
.caso {
  border-left: 6px solid var(--accent);
  background: #fff;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--raggio) var(--raggio) 0;
  border-top: 1px solid var(--bordo);
  border-right: 1px solid var(--bordo);
  border-bottom: 1px solid var(--bordo);
}
.caso h3 { margin-top: 0; color: var(--primario); }
.caso__meta {
  display: inline-block;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primario);
  font-weight: 700;
  margin-bottom: 0.5rem;
  padding: 0.15rem 0.5rem;
  background: var(--sfondo-3);
  border-radius: 3px;
}

/* Card contatti — pulsanti grandi tap-to-call */
.cards--contatti {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 2rem 0 2.5rem;
}
.cards--contatti .card {
  text-align: center;
  padding: 2rem 1.5rem;
  border-top-width: 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.cards--contatti .card__icon {
  width: 56px;
  height: 56px;
  color: var(--accent);
  margin: 0 0 1rem;
  flex-shrink: 0;
}
.cards--contatti .card h3 {
  font-size: 1.05rem;
  margin: 0 0 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--testo-2);
  font-weight: 600;
}
.cards--contatti .card__nome {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--primario);
  margin: 0 0 0.25rem;
}
.cards--contatti .card__ruolo {
  font-size: 0.95rem;
  color: var(--testo-2);
  margin: 0 0 1rem;
}
.cards--contatti .card__recapito {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--primario);
  margin: 0 0 1.25rem;
  word-break: break-word;
}
.cards--contatti .btn {
  padding: 1rem 1.5rem;
  font-size: 1.05rem;
  min-width: 180px;
  margin-top: auto;
}

/* Norme: details espandibili con stile caso */
details.caso {
  padding: 0;
}
details.caso > summary {
  cursor: pointer;
  padding: 1rem 1.5rem;
  font-weight: 500;
  line-height: 1.5;
  list-style: none;
  position: relative;
  padding-right: 3rem;
}
details.caso > summary::-webkit-details-marker { display: none; }
details.caso > summary::after {
  content: "+";
  position: absolute;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  color: var(--accent);
  font-weight: 700;
  line-height: 1;
}
details.caso[open] > summary::after { content: "−"; }
details.caso > summary:hover { background: var(--sfondo-2); }
details.caso > summary:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 3px; }
details.caso[open] > summary { border-bottom: 1px solid var(--bordo); }
details.caso > p {
  padding: 1rem 1.5rem 1.25rem;
  margin: 0;
}
details.caso + details.caso { margin-top: 0.75rem; }

/* Lista persone */
.persone {
  list-style: none;
  padding: 0;
  margin: 2rem 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}
.persona {
  background: #fff;
  border: 1px solid var(--bordo);
  border-left: 4px solid var(--accent);
  border-radius: var(--raggio);
  padding: 1.25rem;
}
.persona__nome { font-weight: 700; font-size: 1.1rem; color: var(--primario); margin: 0 0 0.25rem; }
.persona__ruolo { color: var(--testo-2); margin: 0; font-size: 0.95rem; }

/* Tabella atti */
.tabella-atti-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 2rem 0;
  border: 1px solid var(--bordo);
  border-radius: var(--raggio);
}
.tabella-atti {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  min-width: 600px;
}
.tabella-atti caption {
  text-align: left;
  font-weight: 600;
  padding: 0.5rem 0;
  color: var(--testo-2);
}
.tabella-atti th, .tabella-atti td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--bordo);
  vertical-align: top;
}
.tabella-atti th {
  background: var(--primario);
  color: #fff;
  font-weight: 700;
  border-bottom: 2px solid var(--accent);
}
.tabella-atti tr:last-child td { border-bottom: 0; }
.tabella-atti td .data { display: block; font-weight: 700; color: var(--primario); }
.tabella-atti td .destinatario { display: block; color: var(--testo-2); font-size: 0.9rem; }

/* Form */
.form {
  background: #fff;
  border: 1px solid var(--bordo);
  border-top: 4px solid var(--accent);
  border-radius: var(--raggio);
  padding: 1.75rem;
  margin: 2rem 0;
}
.form-row { margin-bottom: 1.25rem; }
.form label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--primario);
}
.form label .req { color: var(--alert); }
.form .hint {
  display: block;
  font-size: 0.9rem;
  color: var(--testo-2);
  margin-top: 0.25rem;
}
.form input[type="text"],
.form input[type="email"],
.form input[type="tel"],
.form input[type="url"],
.form select,
.form textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  font-size: 1rem;
  font-family: inherit;
  border: 2px solid var(--bordo);
  border-radius: var(--raggio);
  background: #fff;
  color: var(--testo);
}
.form input:focus,
.form select:focus,
.form textarea:focus {
  border-color: var(--primario);
  outline: 3px solid var(--focus);
  outline-offset: 1px;
}
.form textarea { min-height: 8rem; resize: vertical; }
.form input[type="file"] { padding: 0.5rem 0; font-size: 1rem; }

.form fieldset {
  border: 1px solid var(--bordo);
  border-radius: var(--raggio);
  padding: 1rem 1.25rem 0.5rem;
  margin: 0 0 1.25rem;
}
.form legend {
  font-weight: 700;
  color: var(--primario);
  padding: 0 0.5rem;
}
.form .check {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin: 0.25rem 0 0.75rem;
}
.form .check input { margin-top: 0.3rem; flex-shrink: 0; width: 1.1rem; height: 1.1rem; accent-color: var(--accent); }
.form .check label { font-weight: 400; }

.banner-demo {
  background: var(--sfondo-2);
  border-left: 6px solid var(--accent);
  padding: 1rem 1.25rem;
  margin: 2rem 0;
  border-radius: 0 var(--raggio) var(--raggio) 0;
  color: var(--testo);
}
.banner-demo strong { color: var(--primario); }

/* Footer */
.site-footer {
  background: var(--primario);
  color: #fff;
  padding: 2.5rem 1.25rem 1.5rem;
  margin-top: 2rem;
  border-top: 4px solid var(--accent);
}
.site-footer__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}
.site-footer h2 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 0.75rem;
  color: var(--accent);
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 0.4rem; }
.site-footer a { color: #fff; text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 2px; }
.site-footer a:hover { color: var(--accent-hover); text-decoration-color: var(--accent-hover); }
.site-footer__bottom {
  max-width: var(--max-w);
  margin: 2rem auto 0;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255,255,255,0.2);
  font-size: 0.9rem;
  opacity: 0.85;
}

/* Utility */
.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;
}
.center { text-align: center; }
.mt-2 { margin-top: 2rem; }