/* Blog VERC — stile delle pagine renderizzate lato server (SSR).
   Tema chiaro di default, scuro con prefers-color-scheme. Colonna di lettura ~66ch. */

:root {
  --sfondo: #ffffff;
  --sfondo-2: #f6f6f4;
  --testo: #15181c;
  --testo-2: #52565e;
  --bordo: #e5e4e0;
  --accento: #e23d28;
  --accento-scuro: #b92f1d;
  --su-accento: #ffffff;
  --max: 720px;
  --radius: 12px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --sfondo: #15181c;
    --sfondo-2: #1d2127;
    --testo: #eceef0;
    --testo-2: #a2a7b0;
    --bordo: #2c313a;
    --accento: #f2634f;
    --accento-scuro: #e23d28;
    --su-accento: #15181c;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--sfondo);
  color: var(--testo);
  font-family: var(--font);
  font-size: 18px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--accento-scuro); }
@media (prefers-color-scheme: dark) { a { color: var(--accento); } }

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

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--testo); color: var(--sfondo); padding: 10px 16px; border-radius: 0 0 8px 0; z-index: 10;
}
.skip-link:focus { left: 0; }

/* --- Header --- */
header {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  max-width: var(--max); margin: 0 auto; padding: 18px 20px;
}
header .logo {
  font-weight: 800; font-size: 22px; letter-spacing: -0.02em; text-decoration: none; color: var(--testo);
}
header nav ul { list-style: none; display: flex; gap: 20px; margin: 0; padding: 0; }
header nav a { color: var(--testo-2); text-decoration: none; font-size: 15px; font-weight: 500; }
header nav a:hover { color: var(--testo); }

/* --- Breadcrumb --- */
nav[aria-label="Percorso di navigazione"] ol {
  list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 0 auto; padding: 8px 20px;
  max-width: var(--max); font-size: 13.5px; color: var(--testo-2);
}
nav[aria-label="Percorso di navigazione"] li + li::before { content: "›"; margin-right: 8px; color: var(--testo-2); }
nav[aria-label="Percorso di navigazione"] a { color: var(--testo-2); text-decoration: none; }
nav[aria-label="Percorso di navigazione"] a:hover { color: var(--accento); }
nav[aria-label="Percorso di navigazione"] [aria-current] { color: var(--testo); }

/* --- Articolo --- */
main { max-width: var(--max); margin: 0 auto; padding: 8px 20px 48px; }
article h1 {
  font-size: clamp(28px, 5vw, 40px); line-height: 1.15; letter-spacing: -0.02em;
  margin: 12px 0 8px; text-wrap: balance;
}
article .meta { color: var(--testo-2); font-size: 14.5px; margin: 0 0 24px; }
article .meta span { color: var(--testo); font-weight: 600; }

figure { margin: 0 0 28px; }
figure img { width: 100%; border-radius: var(--radius); background: var(--sfondo-2); border: 1px solid var(--bordo); }
figcaption { color: var(--testo-2); font-size: 13.5px; margin-top: 8px; text-align: center; }

article h2 { font-size: clamp(22px, 3.6vw, 28px); line-height: 1.25; margin: 40px 0 12px; letter-spacing: -0.01em; }
article h3 { font-size: 20px; margin: 28px 0 10px; }
article p { margin: 0 0 18px; }
article ul, article ol { margin: 0 0 18px; padding-left: 24px; }
article li { margin: 6px 0; }
article strong { font-weight: 700; }
article a { text-underline-offset: 2px; }

blockquote {
  margin: 22px 0; padding: 4px 18px; border-left: 4px solid var(--accento); color: var(--testo-2); font-style: italic;
}

article :not(pre) > code {
  background: var(--sfondo-2); border: 1px solid var(--bordo); border-radius: 6px;
  padding: 1px 6px; font-size: 0.9em;
}
pre { background: var(--sfondo-2); border: 1px solid var(--bordo); border-radius: var(--radius); padding: 16px; overflow-x: auto; }
pre code { font-size: 14px; }

/* Tabelle (listini a matrice) */
.table-wrap, article > table { overflow-x: auto; }
article table {
  width: 100%; border-collapse: collapse; margin: 22px 0; font-size: 15px;
  font-variant-numeric: tabular-nums; display: block; overflow-x: auto;
}
article th, article td { border: 1px solid var(--bordo); padding: 8px 12px; text-align: left; }
article thead th { background: var(--sfondo-2); font-weight: 700; }

/* --- Indice dei contenuti --- */
nav[aria-label="Indice dei contenuti"] {
  background: var(--sfondo-2); border: 1px solid var(--bordo); border-radius: var(--radius);
  padding: 16px 20px; margin: 0 0 28px;
}
nav[aria-label="Indice dei contenuti"] ul { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: 24px; }
nav[aria-label="Indice dei contenuti"] li { margin: 4px 0; break-inside: avoid; }
nav[aria-label="Indice dei contenuti"] a { color: var(--testo-2); text-decoration: none; font-size: 14.5px; }
nav[aria-label="Indice dei contenuti"] a:hover { color: var(--accento); }

/* --- CTA --- */
aside.cta {
  margin: 40px 0 8px; padding: 28px 24px; text-align: center;
  background: var(--sfondo-2); border: 1px solid var(--bordo); border-radius: var(--radius);
}
aside.cta p { margin: 0 0 16px; font-size: 18px; }
.btn {
  display: inline-block; text-decoration: none; font-weight: 700; font-size: 16px;
  padding: 13px 26px; border-radius: 999px; transition: background .15s ease, transform .05s ease;
}
.btn--primary { background: var(--accento); color: var(--su-accento); }
.btn--primary:hover { background: var(--accento-scuro); }
.btn--primary:active { transform: translateY(1px); }

/* --- Articoli correlati --- */
aside[aria-labelledby="articoli-correlati"] {
  max-width: var(--max); margin: 0 auto; padding: 8px 20px 32px;
}
aside[aria-labelledby="articoli-correlati"] h2 { font-size: 20px; margin: 0 0 12px; }
aside[aria-labelledby="articoli-correlati"] ul { list-style: none; margin: 0; padding: 0; }
aside[aria-labelledby="articoli-correlati"] li { margin: 8px 0; }
aside[aria-labelledby="articoli-correlati"] a { font-weight: 600; }

/* --- Elenco blog / categoria --- */
.blog-intro { max-width: var(--max); margin: 0 auto; padding: 16px 20px 8px; }
.blog-intro h1 { font-size: clamp(30px, 5vw, 44px); margin: 0 0 8px; letter-spacing: -0.02em; }
.blog-intro p { color: var(--testo-2); font-size: 18px; margin: 0; }
.blog-grid {
  max-width: 1080px; margin: 0 auto; padding: 24px 20px 56px;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 28px;
}
.blog-card { border: 1px solid var(--bordo); border-radius: var(--radius); overflow: hidden; background: var(--sfondo); }
.blog-card > a { text-decoration: none; color: inherit; display: block; }
.blog-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; background: var(--sfondo-2); border-bottom: 1px solid var(--bordo); }
.blog-card h2 { font-size: 19px; line-height: 1.3; margin: 16px 16px 8px; }
.blog-card p { color: var(--testo-2); font-size: 14.5px; margin: 0 16px 12px; }
.blog-card-link { display: inline-block; margin: 0 16px 18px; font-weight: 600; font-size: 14.5px; text-decoration: none; color: var(--accento-scuro); }
@media (prefers-color-scheme: dark) { .blog-card-link { color: var(--accento); } }

/* --- Footer --- */
footer { border-top: 1px solid var(--bordo); }
footer p { max-width: var(--max); margin: 0 auto; padding: 24px 20px; color: var(--testo-2); font-size: 14px; }

@media (max-width: 640px) {
  body { font-size: 17px; }
  nav[aria-label="Indice dei contenuti"] ul { columns: 1; }
  header nav ul { gap: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}