:root {
  --c-bg: #ffffff;
  --c-fg: #1a2332;
  --c-muted: #5a6577;
  --c-primary: #1e5aa8;
  --c-primary-dark: #153f77;
  --c-accent: #2d8659;
  --c-surface: #f4f6fa;
  --c-border: #e3e7ef;
  --radius: 12px;
  --shadow: 0 2px 8px rgba(20,40,80,.06);
  --shadow-lg: 0 8px 24px rgba(20,40,80,.1);
  --maxw: 1120px;
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--c-fg);
  background: var(--c-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 2.5vw, 2rem); }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.95);
  backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid var(--c-border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: .75rem 1.25rem;
  max-width: var(--maxw); margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: .75rem; color: var(--c-fg); }
.brand:hover { text-decoration: none; }
.brand img { width: 52px; height: 52px; border-radius: 50%; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-title { font-weight: 700; font-size: 1.05rem; }
.brand-sub { font-size: .78rem; color: var(--c-muted); }

.nav { display: flex; gap: .25rem; align-items: center; }
.nav a {
  color: var(--c-fg); padding: .5rem .85rem; border-radius: 8px;
  font-weight: 500; font-size: .95rem;
}
.nav a:hover { background: var(--c-surface); text-decoration: none; }
.nav a.active { color: var(--c-primary); background: var(--c-surface); }

.nav-toggle {
  display: none; background: none; border: 0; padding: .5rem; cursor: pointer;
}
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--c-fg); margin: 5px 0; border-radius: 2px; }

@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .nav {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: #fff; border-bottom: 1px solid var(--c-border);
    padding: .5rem 1rem; gap: 0;
    display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: .75rem .5rem; border-radius: 0; }
}

/* Buttons */
.btn {
  display: inline-block; padding: .75rem 1.25rem;
  background: var(--c-primary); color: #fff; border-radius: 8px;
  font-weight: 600; transition: background .15s;
  border: 0; cursor: pointer;
}
.btn:hover { background: var(--c-primary-dark); text-decoration: none; color: #fff; }
.btn-outline {
  background: transparent; color: var(--c-primary);
  border: 2px solid var(--c-primary); padding: calc(.75rem - 2px) calc(1.25rem - 2px);
}
.btn-outline:hover { background: var(--c-primary); color: #fff; }
.btn-accent { background: var(--c-accent); }
.btn-accent:hover { background: #206644; }

/* Hero */
.hero {
  padding: 5rem 0 4rem;
  background:
    linear-gradient(135deg, rgba(230,236,245,.88) 0%, rgba(210,222,238,.74) 50%, rgba(20,60,130,.62) 100%),
    url('../img/panorama.jpg') center/cover no-repeat;
  text-align: center;
  position: relative;
}
.hero .eyebrow, .hero h1, .hero p.lead { position: relative; text-shadow: 0 1px 2px rgba(255,255,255,.6); }

/* Page hero (sottopagine) */
.page-hero {
  padding: 3.5rem 0 3rem;
  background:
    linear-gradient(180deg, rgba(255,255,255,.70) 0%, rgba(244,246,250,.80) 100%),
    url('../img/panorama.jpg') center 18%/cover no-repeat;
  border-bottom: 1px solid var(--c-border);
  margin-bottom: 2rem;
}
.page-hero .section-title { margin-bottom: 0; }
.hero .eyebrow {
  display: inline-block; font-size: .85rem; font-weight: 600;
  color: var(--c-primary); text-transform: uppercase; letter-spacing: .08em;
  margin-bottom: 1rem;
}
.hero h1 { margin-bottom: 1rem; }
.hero p.lead { font-size: 1.15rem; color: #1a2332; font-weight: 500; max-width: 640px; margin: 0 auto 1.75rem; }
.hero-actions { display: flex; gap: .75rem; justify-content: center; flex-wrap: wrap; }

/* Sections */
section.block { padding: 3.5rem 0; }
section.block.alt { background: var(--c-surface); }
.section-title { text-align: center; margin-bottom: 2.5rem; }
.section-title p { color: var(--c-muted); margin: 0; }

/* Cards grid */
.grid { display: grid; gap: 1.25rem; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.card {
  background: #fff; border: 1px solid var(--c-border);
  border-radius: var(--radius); padding: 1.5rem;
  box-shadow: var(--shadow); transition: transform .15s, box-shadow .15s;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.card h3 { margin-top: 0; }
.card .date { font-size: .85rem; color: var(--c-muted); margin-bottom: .5rem; }

/* Highlight card (home docs) */
.highlight {
  display: flex; gap: 1.25rem; align-items: center;
  background: linear-gradient(135deg, #1e5aa8 0%, #2d8659 100%);
  color: #fff; padding: 2rem; border-radius: var(--radius);
}
.highlight h3 { color: #fff; margin: 0 0 .4rem; }
.highlight p { margin: 0; opacity: .92; }
.highlight .btn { background: #fff; color: var(--c-primary); }
.highlight .btn:hover { background: var(--c-surface); }

/* Documents list */
.doc-list { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.doc-list li {
  background: #fff; border: 1px solid var(--c-border); border-radius: 8px;
}
.doc-list a {
  display: flex; align-items: center; gap: .85rem;
  padding: .9rem 1.1rem; color: var(--c-fg);
}
.doc-list a:hover { background: var(--c-surface); text-decoration: none; }
.doc-list .icon {
  flex-shrink: 0; width: 36px; height: 36px; border-radius: 6px;
  background: var(--c-primary); color: #fff;
  display: grid; place-items: center; font-size: .7rem; font-weight: 700;
}
.doc-list .meta { font-size: .8rem; color: var(--c-muted); margin-left: auto; }

/* Gallery */
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: .5rem; }
.gallery a { display: block; aspect-ratio: 1; overflow: hidden; border-radius: 8px; }
.gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.gallery a:hover img { transform: scale(1.05); }

/* Footer */
.site-footer {
  background: #0f1a2e; color: #c7d0e0; padding: 2.5rem 0 1.5rem;
  margin-top: 4rem;
}
.footer-inner { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 2rem; }
.site-footer h4 { color: #fff; margin: 0 0 .75rem; font-size: 1rem; }
.site-footer a { color: #c7d0e0; }
.site-footer a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid #223049; margin-top: 2rem; padding-top: 1rem;
  font-size: .85rem; text-align: center; color: #8693ab;
}

/* Contact */
.contact-grid { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.contact-item { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 1.5rem; }
.contact-item strong { display: block; color: var(--c-primary); margin-bottom: .3rem; }

/* Prose */
.prose { max-width: 720px; margin: 0 auto; }
.prose p { margin: 0 0 1rem; }
.prose ul { padding-left: 1.25rem; }