/* ═══════════════════════════════════════════════════════════
   Blog — article layout
   Reuses the design system from ../styles.css
   ═══════════════════════════════════════════════════════════ */

/* ── Reading progress bar ─────────────────────────── */

.read-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  z-index: 60;
  background: linear-gradient(90deg, #ff5a3c, #b14bff 45%, #4ea8ff 80%, #00E1FD);
  transition: width 0.08s linear;
}

/* ── Article shell ────────────────────────────────── */

.article {
  flex: 1;
  width: 100%;
  max-width: 1100px;
  margin-inline: auto;
  padding-bottom: 40px;
}

/* Testata e corpo condividono la stessa griglia, così il testo
   dell'intestazione resta allineato alla colonna di lettura. */
.article-head,
.article-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  column-gap: 56px;
}

.article-head > * { grid-column: 2; }

.article-main {
  grid-column: 2;
  min-width: 0;
}

/* ── Sidebar: indice + banner CTA, sticky ─────────── */

.article-side {
  grid-column: 1;
  position: sticky;
  top: 110px;
  align-self: start;
}

.side-cta {
  margin-top: 20px;
  padding: 20px;
  border: 1px solid rgba(0, 225, 253, 0.26);
  border-radius: 16px;
  background: linear-gradient(160deg, rgba(0, 225, 253, 0.09), rgba(123, 91, 255, 0.07));
}

.side-cta-title {
  margin: 0 0 6px;
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.35;
  color: #fff;
}

.side-cta-copy {
  margin: 0 0 16px;
  font-size: 0.86rem;
  line-height: 1.55;
  color: rgba(236, 242, 255, 0.7);
}

.side-cta .btn {
  width: 100%;
  justify-content: center;
  text-align: center;
}

@media (max-width: 1000px) {
  .article-head,
  .article-layout { grid-template-columns: 1fr; }

  .article-head > *,
  .article-main { grid-column: 1; }

  .article-side {
    grid-column: 1;
    position: static;
    margin-bottom: 8px;
  }

  .side-cta { margin-top: 16px; }
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 26px;
  font-size: 0.85rem;
  color: rgba(236, 242, 255, 0.5);
}

.breadcrumb a {
  color: rgba(236, 242, 255, 0.62);
  text-decoration: none;
}

.breadcrumb a:hover { color: #00E1FD; }

/* ── Article header ───────────────────────────────── */

.article-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 15px;
  border: 1px solid rgba(0, 225, 253, 0.28);
  border-radius: 999px;
  background: rgba(0, 225, 253, 0.06);
  color: #9fe9ff;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.article-kicker .tag-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #00E1FD;
}

.article h1 {
  margin: 22px 0 0;
  font-size: clamp(2.1rem, 4.2vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.035em;
  font-weight: 700;
}

.article-deck {
  margin: 22px 0 0;
  color: rgba(236, 242, 255, 0.78);
  font-size: 1.13rem;
  line-height: 1.7;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin: 28px 0 0;
  padding: 18px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
  color: rgba(236, 242, 255, 0.55);
  font-size: 0.88rem;
}

.article-meta .sep { opacity: 0.4; }

.article-author {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: rgba(236, 242, 255, 0.8);
  font-weight: 600;
}

/* Pastiglia della redazione: il gradiente scorre e il bagliore respira,
   per suggerire che dietro la firma c'è una squadra al lavoro. */
.author-dot {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: inline-block;
  position: relative;
  background: linear-gradient(115deg, #ff5a3c, #b14bff 28%, #4ea8ff 55%, #00E1FD 74%, #b14bff 100%);
  background-size: 320% 320%;
  animation: author-shift 7s ease-in-out infinite;
}

.author-dot::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: inherit;
  background-size: inherit;
  filter: blur(6px);
  opacity: 0.45;
  z-index: -1;
  animation: author-shift 7s ease-in-out infinite, author-breathe 3.4s ease-in-out infinite;
}

@keyframes author-shift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes author-breathe {
  0%, 100% { opacity: 0.30; transform: scale(0.94); }
  50%      { opacity: 0.60; transform: scale(1.06); }
}

@media (prefers-reduced-motion: reduce) {
  .author-dot,
  .author-dot::after { animation: none; }
}

/* ── Copertina ────────────────────────────────────── */

.article-cover {
  margin: 34px 0 0;
}

.article-cover img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 630;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  background: #0b0f2a;
}

.article-cover figcaption {
  margin-top: 10px;
  font-size: 0.82rem;
  line-height: 1.5;
  color: rgba(236, 242, 255, 0.45);
}

/* ── TL;DR ────────────────────────────────────────── */

.tldr {
  margin: 36px 0;
  padding: 24px 26px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-left: 3px solid #00E1FD;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.035);
}

.tldr h2 {
  margin: 0 0 14px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #9fe9ff;
}

.tldr ul {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 10px;
}

.tldr li {
  color: rgba(236, 242, 255, 0.85);
  font-size: 1rem;
  line-height: 1.65;
}

/* ── Table of contents ────────────────────────────── */

.toc {
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  background: rgba(11, 15, 42, 0.5);
}

.toc-title {
  margin: 0 0 12px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(236, 242, 255, 0.55);
}

.toc ol {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 9px;
  color: rgba(236, 242, 255, 0.4);
  font-size: 0.87rem;
  line-height: 1.45;
}

.toc a {
  color: rgba(236, 242, 255, 0.78);
  text-decoration: none;
}

.toc a:hover,
.toc a.is-active { color: #00E1FD; }

/* ── Body copy ────────────────────────────────────── */

.article-body {
  font-size: 1.06rem;
  line-height: 1.85;
  color: rgba(236, 242, 255, 0.82);
}

.article-body h2 {
  margin: 56px 0 18px;
  font-size: clamp(1.5rem, 2.6vw, 1.95rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: #fff;
  scroll-margin-top: 110px;
}

.article-body h3 {
  margin: 36px 0 12px;
  font-size: 1.16rem;
  font-weight: 700;
  color: #fff;
  scroll-margin-top: 110px;
}

.article-body p { margin: 0 0 20px; }

.article-body a {
  color: #7fd4ff;
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 212, 255, 0.35);
}

.article-body a:hover {
  color: #00E1FD;
  border-bottom-color: #00E1FD;
}

.article-body strong { color: #fff; font-weight: 600; }

.article-body ul,
.article-body ol {
  margin: 0 0 22px;
  padding-left: 22px;
  display: grid;
  gap: 10px;
}

.article-body li::marker { color: rgba(127, 212, 255, 0.7); }

.article-body blockquote {
  margin: 32px 0;
  padding: 4px 0 4px 24px;
  border-left: 3px solid #b14bff;
  color: #dfe6ff;
  font-size: 1.16rem;
  line-height: 1.65;
  font-style: normal;
}

.article-body hr {
  margin: 46px 0;
  border: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
}

/* ── Tables ───────────────────────────────────────── */

.table-wrap {
  margin: 30px 0;
  overflow-x: auto;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
}

.article-body table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 0.95rem;
}

/* La caption resta visibile: è il primo appiglio per chi salta alla tabella
   e per i parser che indicizzano i dati strutturati. */
.article-body caption {
  caption-side: top;
  padding: 16px 18px 14px;
  text-align: left;
  font-size: 0.86rem;
  line-height: 1.6;
  color: rgba(236, 242, 255, 0.6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.article-body th,
.article-body td {
  padding: 13px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  vertical-align: top;
}

.article-body th {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
}

.article-body tbody tr:last-child td { border-bottom: 0; }

/* ── Schemi illustrativi ──────────────────────────── */

.zones-diagram {
  margin: 32px 0;
}

.zones-diagram svg {
  display: block;
  width: 100%;
  height: auto;
  padding: 8px 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  background: rgba(11, 15, 42, 0.55);
}

.zones-diagram figcaption {
  margin-top: 12px;
  font-size: 0.86rem;
  line-height: 1.6;
  color: rgba(236, 242, 255, 0.55);
}

/* Sotto i 620px lo schema a tre colonne diventa illeggibile:
   scorre orizzontalmente mantenendo la larghezza minima utile. */
@media (max-width: 620px) {
  .zones-diagram {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .zones-diagram svg {
    width: 620px;
    max-width: none;
  }

  .zones-diagram figcaption { position: sticky; left: 0; }
}

/* ── Callout / cross-link card ────────────────────── */

.callout {
  display: block;
  margin: 34px 0;
  padding: 22px 26px;
  border: 1px solid rgba(177, 75, 255, 0.32);
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(177, 75, 255, 0.09), rgba(78, 168, 255, 0.06));
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

a.callout:hover {
  border-color: rgba(177, 75, 255, 0.6);
  transform: translateY(-2px);
}

/* Variante non cliccabile: l'articolo di destinazione non è ancora pubblicato,
   quindi il blocco annuncia senza linkare (evita un 404 in-body). */
.callout.is-upcoming {
  opacity: 0.72;
  border-style: dashed;
}

.callout.is-upcoming .callout-label { color: rgba(236, 242, 255, 0.5); }

.callout-label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #d7a9ff;
}

.callout-title {
  margin: 0 0 8px;
  font-size: 1.12rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
}

.callout p {
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.65;
  color: rgba(236, 242, 255, 0.72);
}

.callout--note {
  border-color: rgba(0, 225, 253, 0.28);
  background: rgba(0, 225, 253, 0.05);
}

.callout--note .callout-label { color: #9fe9ff; }

/* ── Inline CTA ───────────────────────────────────── */

.article-cta {
  margin: 52px 0 0;
  padding: 34px 32px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(78, 168, 255, 0.1), rgba(123, 91, 255, 0.08));
  text-align: center;
}

.article-cta h2,
.article-cta .article-cta-title {
  margin: 0 0 12px;
  max-width: none;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.3;
  color: #fff;
}

.article-cta p {
  margin: 0 auto 24px;
  max-width: 460px;
  color: rgba(236, 242, 255, 0.75);
  line-height: 1.7;
}

.article-cta-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

/* ── FAQ ──────────────────────────────────────────── */

.faq {
  margin: 56px 0 0;
}

.faq h2 {
  margin: 0 0 20px;
  font-size: clamp(1.5rem, 2.6vw, 1.95rem);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

/* Domande in H3 e risposte come testo sempre visibile: gli answer
   engine estraggono la prima frase, che dentro un <details> chiuso
   pesa meno. */
.faq-item {
  padding: 20px 22px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  margin-bottom: 12px;
}

.faq-item h3 {
  margin: 0 0 10px;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.45;
  color: #fff;
  scroll-margin-top: 110px;
}

.faq-answer {
  margin: 0;
  color: rgba(236, 242, 255, 0.78);
  font-size: 1rem;
  line-height: 1.7;
}

.faq-answer a {
  color: #7fd4ff;
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 212, 255, 0.35);
}

/* ── Related posts ────────────────────────────────── */

.related {
  margin: 60px 0 0;
  padding-top: 34px;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
}

.related h2 {
  margin: 0 0 20px;
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.related-card {
  display: block;
  padding: 20px 22px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.related-card:hover {
  border-color: rgba(0, 225, 253, 0.4);
  transform: translateY(-2px);
}

.related-card .r-tag {
  display: block;
  margin-bottom: 8px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(159, 233, 255, 0.85);
}

.related-card .r-title {
  margin: 0;
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.45;
}

.related-card.is-upcoming { opacity: 0.72; }

.related-card.is-upcoming .r-tag { color: rgba(236, 242, 255, 0.45); }

/* ── Sources ──────────────────────────────────────── */

.sources {
  margin: 48px 0 0;
  padding: 22px 26px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 16px;
  background: rgba(11, 15, 42, 0.45);
  font-size: 0.9rem;
  line-height: 1.7;
}

.sources h2 {
  margin: 0 0 12px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(236, 242, 255, 0.55);
}

.sources ol {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
  color: rgba(236, 242, 255, 0.62);
}

.sources a {
  color: #7fd4ff;
  text-decoration: none;
  word-break: break-word;
}

.sources a:hover { color: #00E1FD; }

/* ── Stat tiles ───────────────────────────────────────
   Riga di numeri-chiave. Si usa quando il dato È il contenuto e un grafico
   aggiungerebbe assi senza aggiungere informazione (tre valori, tre fonti
   diverse, unità non confrontabili). Ogni tile porta la propria fonte: senza
   quella riga il numero non è citabile. */

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
  margin: 32px 0;
}

.stat-tile {
  padding: 22px 22px 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
}

.stat-value {
  display: block;
  margin-bottom: 10px;
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: #fff;
}

.stat-label {
  margin: 0 0 12px;
  font-size: 0.94rem;
  line-height: 1.55;
  color: rgba(236, 242, 255, 0.8);
}

.stat-source {
  margin: 0;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.76rem;
  line-height: 1.5;
  color: rgba(236, 242, 255, 0.5);
}

/* ── Responsive ───────────────────────────────────── */

@media (max-width: 640px) {
  .article { padding-bottom: 24px; }
  .article-body { font-size: 1.02rem; }
  .tldr,
  .toc,
  .callout,
  .sources { padding: 20px; }
  .article-cta { padding: 26px 20px; }
  .article-cta-actions { flex-direction: column; }
  .article-cta-actions .btn { width: 100%; }
  .stat-tile { padding: 18px 18px 16px; }
  .stat-value { font-size: 1.7rem; }
}