/* ============================================================
   ERA Soluzioni Srl — main.css — Stili globali
   Palette brand — Verde
   Verde scuro #14532D · Verde medio #2E7D32 · Verde chiaro #E1F0DE
   Verde brillante (logo) #6CB33F · Giallo #FFB901 · Crema #FFFFCC
   I nomi delle variabili usano il suffisso "green" (palette di base verde).
   ============================================================ */

:root {
  /* Brand ERA Soluzioni — Verde */
  --c-green-dark:    #14532D;
  --c-green-mid:     #2E7D32;
  --c-green-light:   #E1F0DE;
  --c-green-bright:  #6CB33F;
  --c-yellow:       #FFB901;
  --c-cream:        #FFFFCC;

  /* Neutri */
  --c-black:        #1a1a1a;
  --c-text:         #2a2a2a;
  --c-muted:        #5a6470;
  --c-border:       #d8e2d4;
  --c-bg:           #ffffff;
  --c-bg-alt:       #f3f8f1;
  --c-white:        #ffffff;

  /* Tipografia */
  --fs-base: 16px;
  --lh: 1.6;

  /* Layout */
  --maxw: 1200px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(20, 83, 45, 0.08);
  --shadow-md: 0 6px 24px rgba(20, 83, 45, 0.12);
  --shadow-lg: 0 16px 48px rgba(20, 83, 45, 0.16);
  --gap: 24px;

  --header-h: 72px;
  --transition: 0.22s ease;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }

body {
  margin: 0;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--c-green-dark); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--c-green-mid); }

h1, h2, h3, h4 { line-height: 1.2; color: var(--c-green-dark); margin: 0 0 0.5em; font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 900; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.2vw, 1.5rem); }
p  { margin: 0 0 1em; }

ul { margin: 0 0 1em; padding-left: 1.2em; }

:focus-visible {
  outline: 3px solid var(--c-yellow);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 24px;
}

.section { padding: clamp(48px, 8vw, 96px) 0; }
.section--alt { background: var(--c-bg-alt); }
.section--brand {
  background: linear-gradient(135deg, var(--c-green-dark), #0c3a1d);
  color: #e4f2df;
}
.section--brand h2,
.section--brand h3 { color: var(--c-white); }

.section-head { max-width: 760px; margin: 0 auto clamp(32px, 5vw, 56px); text-align: center; }
.section-head .eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-green-mid);
  margin-bottom: 12px;
}
.section--brand .section-head .eyebrow { color: var(--c-yellow); }
.section-head p { color: var(--c-muted); font-size: 1.08rem; }
.section--brand .section-head p { color: #cfe6d6; }

.text-center { text-align: center; }
.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 accessibilità */
.skip-link {
  position: absolute;
  left: 12px; top: -60px;
  background: var(--c-green-dark);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  z-index: 2000;
  transition: top var(--transition);
}
.skip-link:focus { top: 12px; color: #fff; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--c-border);
}
.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  height: var(--header-h);
}
.nav__logo { display: flex; align-items: center; gap: 10px; font-weight: 900; }
.nav__logo svg { height: 34px; width: auto; }
.nav__logo img { height: 30px; width: auto; display: block; }
.nav__logo .brand { font-size: 1.35rem; color: var(--c-green-dark); letter-spacing: -0.02em; }
.nav__logo .reg { font-size: 0.7rem; vertical-align: super; color: var(--c-green-mid); }

.nav__links {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-left: auto;
  list-style: none;
  padding: 0;
}
.nav__links a {
  font-weight: 500;
  color: var(--c-text);
  font-size: 0.97rem;
  position: relative;
}
.nav__links a::after {
  content: "";
  position: absolute; left: 0; bottom: -6px;
  width: 0; height: 2px; background: var(--c-yellow);
  transition: width var(--transition);
}
.nav__links a:hover { color: var(--c-green-dark); }
.nav__links a:hover::after { width: 100%; }

.nav__actions { display: flex; align-items: center; gap: 14px; }

/* Selettore lingua */
.lang-switch {
  display: inline-flex;
  border: 1px solid var(--c-border);
  border-radius: 999px;
  overflow: hidden;
  background: var(--c-white);
}
.lang-switch button {
  border: 0;
  background: transparent;
  padding: 7px 12px;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--c-muted);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: background var(--transition), color var(--transition);
}
.lang-switch button[aria-pressed="true"] {
  background: var(--c-green-mid);
  color: #fff;
}

/* Burger mobile */
.nav__burger {
  display: none;
  border: 0; background: transparent;
  cursor: pointer; padding: 8px;
  flex-direction: column; gap: 5px;
}
.nav__burger span {
  display: block; width: 24px; height: 2px;
  background: var(--c-green-dark); border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--c-white);
  color: var(--c-muted);
  padding: 56px 0 28px;
  font-size: 0.92rem;
  border-top: 1px solid var(--c-border);
}
.site-footer a { color: var(--c-green-dark); }
.site-footer a:hover { color: var(--c-green-mid); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 36px;
}
.site-footer h4 { color: var(--c-green-dark); font-size: 0.95rem; margin-bottom: 14px; letter-spacing: 0.04em; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 8px; }
.footer-brand .brand { font-size: 1.5rem; font-weight: 900; color: var(--c-green-dark); }
.footer-brand .reg { font-size: 0.7rem; vertical-align: super; color: var(--c-green-mid); }
.footer-era {
  display: inline-flex; align-items: center; gap: 8px;
  margin-top: 16px;
}
.footer-era img { height: 40px; width: auto; display: block; }
.footer-iso {
  display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px;
}
.footer-iso span {
  font-size: 0.72rem; font-weight: 600;
  border: 1px solid var(--c-border);
  padding: 4px 9px; border-radius: 6px; color: var(--c-muted);
}
.footer-bottom {
  border-top: 1px solid var(--c-border);
  padding-top: 22px;
  display: flex; flex-wrap: wrap; gap: 12px 28px;
  justify-content: space-between; align-items: center;
  font-size: 0.84rem; color: var(--c-muted);
}
.footer-bottom nav { display: flex; flex-wrap: wrap; gap: 16px; }

/* ---------- Responsive ---------- */
@media (max-width: 1200px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav__burger { display: flex; }
  .nav__links {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--c-border);
    box-shadow: var(--shadow-md);
    padding: 8px 24px 16px;
    transform: translateY(-120%);
    transition: transform var(--transition);
    margin-left: 0;
  }
  .nav__links.is-open { transform: translateY(0); }
  .nav__links li { width: 100%; }
  .nav__links a { display: block; padding: 14px 0; width: 100%; border-bottom: 1px solid var(--c-bg-alt); }
  .nav__links a::after { display: none; }
  .nav .nav__cta { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
}

/* Lingua: mostra/nascondi elementi in base ad attributo html[lang] */
[data-i18n-show] { display: none; }
html[lang="it"] [data-i18n-show="it"],
html[lang="en"] [data-i18n-show="en"] { display: revert; }