:root {
  color-scheme: light;

  /* FOUNDATION */
  --color-bg: #f6f4ef;
  --color-surface: #ffffff;
  --color-surface-alt: #ebe7de;
  --color-border: #d7d0c4;

  /* TYPO */
  --color-text: #16211f;
  --color-text-muted: #66716d;

  /* BRAND */
  --color-primary: #12352e;
  --color-secondary: #0b7f86;

  /* STATUS */
  --color-success: #2e7d52;
  --color-warning: #b9933d;
  --color-danger: #b8473f;
  --color-info: #4251a6;

  /* ACCENTS */
  --color-accent-1: #b86a3a;
  --color-accent-2: #6b4e7a;

  /* EFFECTS */
  --shadow-md: 0 18px 50px rgba(21, 31, 28, 0.12);
  --radius-sm: 8px;

  /* LAYOUT */
  --container: 1180px;

  /* ===== VARIABILI MANCANTI (aggiunte) ===== */
  
  /* alias per semplificare il codice */
  --r: var(--radius-sm);           /* raggio usato in molti punti */
  --white: #ffffff;                /* equivalente a --color-surface */
  --muted: var(--color-text-muted);
  --line: var(--color-border);
  --max: var(--container);
  --paper: #faf9f5;                /* sfondo per card in sezioni alternate */
  --ink: #16211f;                  /* colore testo scuro, uguale a --color-text */

  /* colori tematici (alias dei colori esistenti per chiarezza semantica) */
  --pine: var(--color-primary);    /* #12352e */
  --sea: var(--color-secondary);   /* #0b7f86 */
  --copper: var(--color-accent-1); /* #b86a3a */
  --gold: var(--color-warning);    /* #b9933d */
  --indigo: var(--color-info);     /* #4251a6 */
  --leaf: var(--color-success);    /* #2e7d52 */
  --danger: var(--color-danger);   /* #b8473f */

  /* TYPOGRAPHY (valori corretti per pesi font non standard) */
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

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

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: 0.7rem 1rem;
  background: var(--color-primary);
  color: var(--color-surface);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem clamp(1rem, 4vw, 2rem);
  background: rgba(255, 255, 255, 0.94);
  color: var(--color-text-muted);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: var(--r);
  background: var(--color-primary);
  color: var(--color-surface);
  font-weight: 800;
  letter-spacing: 0.03em;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 0.95rem;
}

.brand small {
  color: var(--color-text-muted);
  font-size: 0.72rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-text-muted);
  padding: 0.45rem 0.6rem;
  border-radius: var(--r);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--color-text);
  background: var(--color-surface-alt);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: var(--r);
  padding: 0.55rem 0.75rem;
  font-weight: 800;
}

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(310px, 0.72fr);
  gap: clamp(1.2rem, 4vw, 3rem);
  align-items: center;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 6rem) clamp(1rem, 4vw, 2rem);
}

.hero-copy h1 {
  max-width: 11ch;
  margin: 0;
  font-size: clamp(3rem, 8vw, 6.6rem);
  line-height: 0.92;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 66ch;
  color: var(--color-text-muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
  margin: 1.6rem 0 0;
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--color-accent-1);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.hero-actions,
.site-footer nav {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin-top: 1.6rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0.7rem 0.95rem;
  border-radius: var(--r);
  text-decoration: none;
  font-weight: 800;
  border: 1px solid transparent;
}

.btn.primary {
  background: var(--color-primary);
}

.btn.secondary {
  background: var(--color-surface);
  border-color: var(--color-border);
}

.btn.ghost {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.hero-proof {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.proof-header {
  padding: 1.1rem 1.1rem 0.3rem;
}

.proof-header h2 {
  margin: 0;
  font-size: clamp(1.2rem, 2vw, 1.5rem);
}

.hero-proof img {
  width: 100%;
  aspect-ratio: 1.15 / 1;
  object-fit: cover;
  object-position: 50% 18%;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.proof-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
}

.proof-metrics div {
  padding: 0.8rem;
  border-right: 1px solid var(--line);
}

.proof-metrics div:last-child {
  border-right: 0;
}

.proof-metrics dt {
  color: var(--color-text-muted);
  font-size: 0.68rem;
  text-transform: uppercase;
  font-weight: 800;
}

.proof-metrics dd {
  margin: 0.2rem 0 0;
  color: var(--color-success);
  font-size: 1.1rem;
  font-weight: 900;
}

.metric-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2rem) 3rem;
  gap: 1px;
}

.metric {
  background: var(--color-primary);
}

.metric:nth-child(2) {
  background: var(--color-secondary);
}

.metric:nth-child(3) {
  background: var(--color-info);
}

.metric:nth-child(4) {
  background: var(--color-accent-1);
}

.metric span {
  display: block;
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 900;
  line-height: 1;
}

.metric p {
  margin: 0.65rem 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.88rem;
}

.section {
  padding: clamp(3rem, 7vw, 5.4rem) clamp(1rem, 4vw, 2rem);
}

.section:nth-of-type(odd) {
  background: var(--white);
}

.section-head,
.profile-grid,
.impact-grid,
.service-grid,
.software-grid,
.magazine-layout,
.news-grid,
.cert-grid,
.market-grid,
.kpi-dashboard,
.report-grid {
  max-width: var(--max);
  margin-inline: auto;
}

.section-head {
  margin-bottom: 1.5rem;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.section-head p:not(.eyebrow) {
  max-width: 74ch;
  margin: 0.9rem 0 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.profile-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 1fr);
  gap: 1.2rem;
  align-items: start;
}

.narrative,
.timeline article,
.service-card,
.software-card,
.article-card,
.news-card,
.cert-card,
.material-card,
.kpi-group,
.report-grid article {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r);
}

.section:nth-of-type(odd) .narrative,
.section:nth-of-type(odd) .timeline article,
.section:nth-of-type(odd) .service-card,
.section:nth-of-type(odd) .software-card,
.section:nth-of-type(odd) .article-card,
.section:nth-of-type(odd) .news-card,
.section:nth-of-type(odd) .cert-card,
.section:nth-of-type(odd) .material-card,
.section:nth-of-type(odd) .kpi-group,
.section:nth-of-type(odd) .report-grid article {
  background: var(--paper);
}

.narrative {
  padding: 1.35rem;
}

.narrative h3,
.timeline h3,
.service-card h3,
.software-card h3,
.article-card h3,
.news-card h3,
.cert-card h3,
.kpi-group h3,
.report-grid h3 {
  margin: 0;
  font-size: 1.08rem;
}

.narrative p,
.timeline p,
.service-card p,
.software-card p,
.article-card p,
.news-card p,
.cert-card p,
.material-card p,
.kpi-group p,
.report-grid p {
  color: var(--muted);
}

.timeline {
  display: grid;
  gap: 0.7rem;
}

.timeline article {
  padding: 1rem;
  position: relative;
  border-left: 5px solid var(--sea);
}

.timeline article:nth-child(2) {
  border-left-color: var(--indigo);
}

.timeline article:nth-child(3) {
  border-left-color: var(--copper);
}

.timeline article:nth-child(4) {
  border-left-color: var(--gold);
}

.timeline span {
  color: var(--copper);
  font-weight: 900;
  font-size: 0.75rem;
}

.impact-grid,
.service-grid,
.software-grid,
.news-grid,
.cert-grid,
.market-grid,
.report-grid {
  display: grid;
  gap: 1rem;
}

.impact-grid {
  grid-template-columns: repeat(5, 1fr);
  margin-top: 1rem;
}

.impact-grid div {
  border-top: 3px solid var(--pine);
  background: rgba(18, 53, 46, 0.06);
  padding: 1rem;
}

.impact-grid div:nth-child(2) {
  border-top-color: var(--danger);
}

.impact-grid div:nth-child(3) {
  border-top-color: var(--indigo);
}

.impact-grid div:nth-child(4) {
  border-top-color: var(--copper);
}

.impact-grid div:nth-child(5) {
  border-top-color: var(--leaf);
}

.impact-grid strong,
.impact-grid span {
  display: block;
}

.impact-grid span {
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.84rem;
}

.service-grid {
  grid-template-columns: repeat(4, 1fr);
}

.service-card {
  padding: 1.15rem;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.service-card ul,
.report-grid ul {
  margin: 0.8rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.service-card li,
.report-grid li {
  margin: 0.3rem 0;
}

.service-kpi {
  margin-top: auto;
  padding-top: 1rem;
  color: var(--pine);
  font-weight: 900;
  font-size: 0.82rem;
}

.software-grid {
  grid-template-columns: repeat(2, 1fr);
}

.software-card {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(210px, 0.7fr);
  gap: 1rem;
  padding: 1rem;
  overflow: hidden;
}

.software-card:nth-child(2n) {
  border-top: 4px solid var(--indigo);
}

.software-card:nth-child(2n + 1) {
  border-top: 4px solid var(--sea);
}

.software-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0.8rem 0;
}

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0.22rem 0.48rem;
  border-radius: 999px;
  background: rgba(18, 53, 46, 0.08);
  color: var(--pine);
  font-size: 0.68rem;
  font-weight: 800;
}

.software-shot {
  min-height: 210px;
  border-radius: var(--r);
  background: linear-gradient(145deg, var(--pine), var(--sea));
  color: var(--white);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
}

.software-shot img {
  width: calc(100% + 2rem);
  max-width: none;
  margin: -1rem -1rem 0.8rem;
  aspect-ratio: 1.45 / 1;
  object-fit: cover;
  object-position: 50% 18%;
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
}

.software-shot strong {
  font-size: 1.6rem;
  line-height: 1;
}

.software-kpis {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.45rem;
  margin-top: 0.85rem;
}

.software-kpis div {
  background: rgba(255, 255, 255, 0.12);
  padding: 0.55rem;
  border-radius: var(--radius-sm);
}

.software-kpis b,
.software-kpis span {
  display: block;
}

.software-kpis b {
  font-size: 1rem;
}

.software-kpis span {
  opacity: 0.78;
  font-size: 0.68rem;
}

.magazine-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.75fr) minmax(0, 1.25fr);
  gap: 1rem;
}

.feature-article {
  background: var(--color-primary);
  color: var(--white);
  border-radius: var(--radius-sm);
  padding: 1.4rem;
  min-height: 390px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.feature-article h3 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 3.6rem);
  line-height: 0.98;
}

.feature-article p {
  color: rgba(255, 255, 255, 0.78);
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.article-card,
.news-card,
.cert-card,
.material-card,
.kpi-group,
.report-grid article {
  padding: 1rem;
}

.article-card h3,
.news-card h3 {
  line-height: 1.1;
}

.article-number {
  color: var(--copper);
  font-weight: 900;
  margin-bottom: 0.6rem;
}

.article-card details {
  margin-top: 0.8rem;
}

.article-card summary {
  cursor: pointer;
  color: var(--pine);
  font-weight: 900;
}

.news-grid {
  grid-template-columns: repeat(4, 1fr);
}

.news-card {
  border-top: 4px solid var(--indigo);
}

.news-card:nth-child(2) {
  border-top-color: var(--sea);
}

.news-card:nth-child(3) {
  border-top-color: var(--leaf);
}

.news-card:nth-child(4) {
  border-top-color: var(--copper);
}

.news-date,
.source-note,
.material-source {
  color: var(--muted);
  font-size: 0.78rem;
}

.news-card a,
.material-card a,
.feature-article a,
.software-card a {
  color: var(--pine);
  font-weight: 900;
}

.feature-article a {
  color: var(--white);
}

.cert-grid {
  grid-template-columns: repeat(3, 1fr);
}

.cert-card {
  display: grid;
  gap: 0.6rem;
}

.cert-card dl {
  margin: 0;
  display: grid;
  gap: 0.5rem;
}

.cert-card dt {
  color: var(--copper);
  font-weight: 900;
  font-size: 0.72rem;
  text-transform: uppercase;
}

.cert-card dd {
  margin: 0;
  color: var(--muted);
}

.market-grid {
  grid-template-columns: repeat(7, 1fr);
}

.material-card {
  border-bottom: 4px solid var(--pine);
}

.material-card[data-trend="up"] {
  border-bottom-color: var(--leaf);
}

.material-card[data-trend="down"] {
  border-bottom-color: var(--danger);
}

.material-card[data-trend="mixed"] {
  border-bottom-color: var(--gold);
}

.material-price {
  font-size: 1.6rem;
  font-weight: 900;
  line-height: 1;
  margin: 0.8rem 0 0.35rem;
}

.material-var {
  font-weight: 900;
}

.material-card[data-trend="up"] .material-var {
  color: var(--leaf);
}

.material-card[data-trend="down"] .material-var {
  color: var(--danger);
}

.material-card[data-trend="mixed"] .material-var {
  color: var(--gold);
}

.source-note {
  max-width: var(--max);
  margin: 1rem auto 0;
}

.kpi-dashboard {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.kpi-group {
  border-top: 4px solid var(--sea);
}

.kpi-group:nth-child(2) {
  border-top-color: var(--leaf);
}

.kpi-group:nth-child(3) {
  border-top-color: var(--copper);
}

.kpi-group:nth-child(4) {
  border-top-color: var(--danger);
}

.kpi-group:nth-child(5) {
  border-top-color: var(--indigo);
}

.kpi-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
  align-items: center;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--line);
}

.kpi-item:last-child {
  border-bottom: 0;
}

.kpi-item span {
  color: var(--muted);
  font-size: 0.82rem;
}

.kpi-item b {
  font-size: 0.95rem;
}

.report-grid {
  grid-template-columns: repeat(3, 1fr);
  margin-bottom: 1rem;
}

.site-footer {
  padding: 2rem clamp(1rem, 4vw, 2rem);
  background: var(--ink);
  color: var(--white);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-footer p {
  margin: 0;
}

.site-footer nav {
  margin-top: 0;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.82);
}

@media (max-width: 1080px) {
  .hero,
  .profile-grid,
  .magazine-layout {
    grid-template-columns: 1fr;
  }

  .metric-band,
  .service-grid,
  .news-grid,
  .kpi-dashboard {
    grid-template-columns: repeat(2, 1fr);
  }

  .impact-grid,
  .cert-grid,
  .market-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .software-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {

  .site-nav a {
    display: block;
    width: 100%;
    min-height: 44px;
  }

  .btn {
    min-height: 44px;
  }

  .impact-grid,
  .service-grid,
  .news-grid,
  .cert-grid,
  .market-grid,
  .kpi-dashboard {
    grid-template-columns: 1fr !important;
  }

  .software-card {
    grid-template-columns: 1fr;
  }

  .article-grid {
    grid-template-columns: 1fr;
  }

  .hero-proof {
    margin-top: 1rem;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    inset: 66px 1rem auto 1rem;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--r);
    box-shadow: var(--shadow-md);
    padding: 0.7rem;
    justify-content: flex-start;
  }

  .site-nav.open {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding-top: 2rem;
  }

  .hero-copy h1 {
    max-width: 12ch;
  }

  .metric-band,
  .impact-grid,
  .service-grid,
  .software-card,
  .article-grid,
  .news-grid,
  .cert-grid,
  .market-grid,
  .kpi-dashboard,
  .report-grid {
    grid-template-columns: 1fr;
  }

  .proof-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .proof-metrics div:nth-child(2) {
    border-right: 0;
  }
}
@media (max-width: 480px) {
  .hero-copy h1 {
    font-size: 2.6rem;
    line-height: 1;
  }

  .hero {
    padding: 2rem 1rem;
    gap: 1.2rem;
  }

  .btn {
    width: 100%;
  }

  .site-nav a {
    font-size: 0.9rem;
    padding: 0.7rem 0.9rem;
  }

  .metric span {
    font-size: 2.2rem;
  }

  .section-head h2 {
    font-size: 2rem;
  }
}