:root {
  --bg: #eef4f8;
  --surface: #ffffff;
  --surface-soft: #f4f8fa;
  --border: #dde6ec;
  --text: #10222c;
  --muted: #5c7180;
  --primary: #00c8e0;
  --primary-dark: #063c47;
  --accent: #c8e000;
  --accent-soft: #f4f8cf;
  --on-accent: #063c47;
  --teal: #036e7a;
  --shadow: 0 16px 42px rgba(6, 30, 43, 0.08);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1418;
    --surface: #101c22;
    --surface-soft: #14232a;
    --border: #1f333c;
    --text: #eaf3f5;
    --muted: #9db0b8;
    --primary: #00c8e0;
    --primary-dark: #d7f7fb;
    --accent: #c8e000;
    --accent-soft: #223018;
    --on-accent: #063c47;
    --teal: #5fd6e6;
    --shadow: 0 16px 42px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
  body { background: linear-gradient(135deg, #0b1418 0%, #0e1a20 100%); }
  .header { background: rgba(16, 28, 34, 0.92); border-color: rgba(255,255,255,0.08); }
  .nav-links a { background: var(--surface-soft); border-color: var(--border); color: var(--muted); }
  .nav-links a:hover { color: var(--primary); background: #16262d; }
  .news-card { background: linear-gradient(180deg, #101c22 0%, #0d181d 100%); }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(135deg, #f6fafc 0%, #e9f1f6 100%);
  line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.page-shell { max-width: 1320px; margin: 0 auto; padding: 24px 24px 48px; }

.topbar {
  padding: 8px 16px;
  background: linear-gradient(90deg, var(--primary-dark), var(--primary));
  color: #dff3fb;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-align: center;
  border-radius: 999px;
  margin-bottom: 14px;
}

.header {
  background: rgba(255,255,255,0.92);
  border: 1px solid rgba(255,255,255,0.75);
  backdrop-filter: blur(12px);
  border-radius: 28px;
  padding: 16px 22px;
  box-shadow: var(--shadow);
}
.header-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 46px; }
.brand strong { display: block; font-size: 17px; color: var(--primary-dark); }
.brand span { font-size: 12px; color: var(--muted); }
.nav-links { display: flex; flex-wrap: wrap; gap: 8px; }
.nav-links a {
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--muted);
  background: var(--surface-soft);
  border: 1px solid var(--border);
}
.nav-links a:hover { color: var(--primary-dark); background: #e7f4fa; }

.hero {
  margin-top: 18px;
  background: linear-gradient(135deg, #063c47 0%, #00a6bd 50%, #00c8e0 100%);
  color: white;
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 32px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  margin: 0 0 14px;
  line-height: 1.15;
  max-width: 30ch;
  text-wrap: balance;
}
.hero p {
  margin: 0 0 20px;
  color: rgba(255,255,255,0.88);
  max-width: 52ch;
  font-size: 16px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn.primary { background: var(--accent); color: var(--on-accent); }
.btn.secondary { background: rgba(255,255,255,0.18); color: white; border-color: rgba(255,255,255,0.4); }

.hero-stats { display: flex; flex-wrap: wrap; gap: 20px; }
.hero-stat strong { display: block; font-size: 22px; }
.hero-stat span { font-size: 12px; color: rgba(255,255,255,0.78); }

.hero-media {
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.24);
  box-shadow: var(--shadow);
}
.hero-media img { width: 100%; height: 100%; object-fit: cover; display: block; }

.main-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 18px; margin-top: 22px; }
.panel, .side-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.panel { padding: 20px; }
.panel h2 { margin: 0 0 14px; font-size: 18px; color: var(--primary-dark); }
.grid-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.news-card { background: linear-gradient(180deg, #fcfeff 0%, #f4f9fc 100%); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 16px; }
.news-card h3 { margin: 0 0 8px; font-size: 15px; color: var(--text); }
.news-card p { margin: 0 0 10px; font-size: 13px; color: var(--muted); line-height: 1.55; }
.meta { font-size: 12px; color: var(--teal); font-weight: 700; }

.sidebar-stack { display: grid; gap: 14px; }
.side-card { padding: 16px; }
.side-card h3 { margin: 0 0 8px; font-size: 15px; color: var(--primary-dark); }
.side-card p { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.55; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.tag-list span { padding: 6px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--primary-dark); font-size: 12px; font-weight: 600; }

.section-block { margin-top: 30px; }
.section-intro { margin-bottom: 16px; }
.section-intro h2 { margin: 0 0 6px; font-size: 22px; color: var(--primary-dark); }
.section-intro p { margin: 0; color: var(--muted); max-width: 65ch; line-height: 1.6; }

/* Placeholder fotografico: sostituisce le foto reali non ancora disponibili.
   Etichettato in modo esplicito, non simula uno screenshot o una foto finta. */
.photo-placeholder {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 4px; text-align: center; padding: 12px;
  background: repeating-linear-gradient(135deg, var(--surface-soft) 0 10px, var(--surface) 10px 20px);
  border: 1px dashed var(--border);
  color: var(--muted);
  font-size: 11px;
  min-height: 100%;
}
.photo-placeholder strong { font-size: 12px; color: var(--primary-dark); font-weight: 600; }

.tab-filter { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.tab-filter button {
  font: inherit; cursor: pointer;
  padding: 8px 14px; border-radius: 999px; font-size: 13px; font-weight: 600;
  background: var(--surface); border: 1px solid var(--border); color: var(--muted);
}
.tab-filter button:hover { border-color: var(--primary); color: var(--primary-dark); }
.tab-filter button[aria-pressed="true"] { background: var(--primary-dark); border-color: var(--primary-dark); color: #ffffff; }

.featured-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.featured-card {
  display: grid; grid-template-rows: 120px auto; overflow: hidden;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md);
  box-shadow: var(--shadow);
}
.featured-card .featured-thumb { min-height: 120px; }
.featured-card-body { padding: 12px 14px 14px; }
.featured-tag {
  display: inline-block; margin-bottom: 6px; padding: 3px 8px; border-radius: 999px;
  background: var(--accent-soft); color: var(--primary-dark); font-size: 11px; font-weight: 700;
}
.featured-card h3 { margin: 0 0 6px; font-size: 14px; line-height: 1.35; color: var(--text); }
.featured-meta { display: flex; justify-content: space-between; align-items: center; font-size: 11px; color: var(--muted); }
.featured-meta .arrow { color: var(--primary); font-weight: 700; }

.news-thumb { width: 100%; aspect-ratio: 16 / 10; border-radius: var(--radius-md) var(--radius-md) 0 0; overflow: hidden; }
.news-card { display: flex; flex-direction: column; padding: 0; overflow: hidden; }
.news-card-body { padding: 14px; }

.audience-scroll {
  display: flex; gap: 14px; overflow-x: auto; padding-bottom: 6px;
  scroll-snap-type: x proximity;
}
.audience-card {
  scroll-snap-align: start; flex: 0 0 260px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow); padding: 18px;
}
.audience-card h3 { margin: 0 0 8px; font-size: 15px; color: var(--primary-dark); }
.audience-card p { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.55; }

.split-block {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 28px;
  align-items: center;
}
.split-media { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow); }
.split-media img { width: 100%; height: 100%; object-fit: cover; }
.split-copy ul { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 14px; }
.split-copy li { padding-left: 18px; border-left: 3px solid var(--accent); }
.split-copy li strong { display: block; color: var(--primary-dark); font-size: 15px; margin-bottom: 2px; }
.split-copy li span { color: var(--muted); font-size: 13px; line-height: 1.55; }

.steps-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.step-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow); padding: 18px; }
.step-card h3 { margin: 0 0 8px; color: var(--primary-dark); font-size: 16px; }
.step-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.6; }
.step-number {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; margin-bottom: 10px; border-radius: 50%;
  background: var(--accent-soft); color: var(--primary-dark); font-weight: 700;
}

.cta-block { border-radius: var(--radius-lg); box-shadow: var(--shadow); background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%); color: white; padding: 28px; }
.cta-block h2 { margin: 0 0 8px; font-size: 24px; }
.cta-block p { margin: 0 0 16px; color: rgba(255,255,255,0.88); max-width: 65ch; }

footer { padding: 18px 24px 24px; color: var(--muted); font-size: 13px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.social-links { display: flex; gap: 12px; }
.social-links a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--muted);
}
.social-links a:hover { border-color: var(--primary); background: var(--surface-soft); color: var(--primary-dark); }
.social-links svg { width: 18px; height: 18px; }

.skip-link {
  position: absolute; left: 12px; top: -60px;
  background: var(--primary-dark); color: #ffffff;
  padding: 10px 16px; border-radius: 10px; font-size: 13px; font-weight: 700;
  z-index: 100; transition: top 150ms ease;
}
.skip-link:focus { top: 12px; }

a:focus-visible, button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.a11y-toggle {
  position: fixed; right: 20px; bottom: 20px; z-index: 90;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 14px; border-radius: 999px; border: none;
  background: var(--primary-dark); color: #ffffff;
  font-size: 13px; font-weight: 700; cursor: pointer;
  box-shadow: var(--shadow);
}
.a11y-toggle span[aria-hidden] {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; border-radius: 50%; background: var(--accent); color: var(--on-accent);
  font-size: 11px;
}
.a11y-toggle[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); }
.a11y-toggle[aria-pressed="true"] span[aria-hidden] { background: var(--primary-dark); color: #ffffff; }

html.a11y-contrast { font-size: 112.5%; }
html.a11y-contrast body { background: #ffffff; }
html.a11y-contrast .hero p,
html.a11y-contrast .section-intro p,
html.a11y-contrast .news-card p,
html.a11y-contrast .side-card p,
html.a11y-contrast .step-card p,
html.a11y-contrast .split-copy li span {
  color: #1a1a1a;
}
html.a11y-contrast .panel, html.a11y-contrast .side-card,
html.a11y-contrast .news-card, html.a11y-contrast .step-card {
  border-width: 2px; border-color: #1a1a1a;
}
html.a11y-contrast .btn.primary { background: #0a0a0a; color: #ffffff; }
html.a11y-contrast .btn.secondary { background: #ffffff; color: #0a0a0a; border-color: #0a0a0a; }

@media (prefers-color-scheme: dark) {
  html.a11y-contrast body { background: #000000; }
  html.a11y-contrast .hero p,
  html.a11y-contrast .section-intro p,
  html.a11y-contrast .news-card p,
  html.a11y-contrast .side-card p,
  html.a11y-contrast .step-card p,
  html.a11y-contrast .split-copy li span {
    color: #f5f5f5;
  }
  html.a11y-contrast .panel, html.a11y-contrast .side-card,
  html.a11y-contrast .news-card, html.a11y-contrast .step-card {
    border-color: #f5f5f5;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .step-card, .news-card { transition: transform 180ms ease; }
  .step-card:hover, .news-card:hover { transform: translateY(-2px); }
}

@media (max-width: 1024px) {
  .hero-grid, .main-grid, .split-block { grid-template-columns: 1fr; }
  .hero-media { order: -1; max-height: 260px; }
  .featured-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .featured-grid { grid-template-columns: 1fr; }
  .audience-card { flex-basis: 220px; }
}

@media (max-width: 720px) {
  .page-shell { padding: 14px 14px 24px; }
  .header-inner { flex-direction: column; align-items: flex-start; }
  .grid-cards { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .hero { padding: 22px; border-radius: 24px; }
}