/* ── Blog Tutoro — stile brandizzato + animazioni ─────────────────────────────
   Coerente con la landing: palette menta su sfondo chiaro, Inter + Instrument
   Serif per gli accenti, easing "Emil Kowalski". */

:root {
  --mint:      #67C49A;
  --mint-dark: #3CB371;
  --mint-deep: #1E6B47;
  --ink:       #0A1628;
  --ink-sub:   #374151;
  --ink-muted: #6B7280;
  --ink-dim:   #9CA3AF;
  --bg:        #FFFFFF;
  --bg-2:      #F6FAF8;
  --bg-3:      #EEF7F2;
  --border:    #E5E7EB;
  --border-m:  #C6EDD9;
  --radius:    16px;
  --ease-out:  cubic-bezier(0.23, 1, 0.32, 1);
  --maxw:      720px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--ink); background: var(--bg); line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* ── Barra di progresso lettura ── */
.blog-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 100;
  background: linear-gradient(90deg, var(--mint), var(--mint-dark));
  transform: scaleX(0); transform-origin: 0 50%;
  transition: transform .08s linear;
}

/* ── Navbar ── */
.blog-nav {
  position: fixed; top: 0; inset-inline: 0; z-index: 90;
  transition: background .3s var(--ease-out), border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.blog-nav.scrolled {
  background: rgba(255,255,255,.82); backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
}
.blog-nav-inner {
  max-width: 1080px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.blog-logo { display: flex; align-items: center; gap: 9px; }
.blog-logo-text { font-weight: 800; font-size: 19px; letter-spacing: -.5px; }
.blog-nav-links { display: flex; gap: 22px; font-size: 14px; font-weight: 500; color: var(--ink-sub); }
.blog-nav-links a { transition: color .2s; }
.blog-nav-links a:hover, .blog-nav-links a.active { color: var(--mint-dark); }
.blog-cta {
  background: var(--mint-dark); color: #fff; font-weight: 700; font-size: 13px;
  padding: 10px 18px; border-radius: 10px; transition: transform .2s var(--ease-out), box-shadow .2s;
}
.blog-cta:hover { transform: translateY(-1px); box-shadow: 0 8px 22px rgba(60,179,113,.32); }
.blog-cta.big { font-size: 15px; padding: 14px 28px; }
@media (max-width: 640px) { .blog-nav-links { display: none; } }

/* ── Reveal on scroll ── */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s var(--ease-out), transform .6s var(--ease-out); transition-delay: var(--d, 0ms); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ── Separatore animato (sotto titoli) ── */
.blog-sep { height: 4px; width: 0; border-radius: 4px; margin: 22px 0; background: linear-gradient(90deg, var(--mint), var(--mint-dark)); transition: width .9s var(--ease-out) .15s; }
.blog-sep.in { width: 88px; }
.blog-sep.center { margin-inline: auto; }

/* ── HERO indice ── */
.blog-hero { max-width: var(--maxw); margin: 0 auto; padding: 150px 24px 36px; text-align: center; }
.blog-eyebrow { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .5px; text-transform: uppercase; color: var(--mint-dark); background: var(--bg-3); padding: 6px 14px; border-radius: 999px; border: 1px solid var(--border-m); }
.blog-hero h1 { font-size: clamp(38px, 6vw, 62px); font-weight: 800; line-height: 1.05; letter-spacing: -1.5px; margin-top: 22px; }
.blog-hero .hl { font-family: 'Instrument Serif', serif; font-style: italic; font-weight: 400; color: var(--mint-dark); letter-spacing: 0; }
.blog-hero-sub { font-size: 18px; color: var(--ink-muted); max-width: 520px; margin: 0 auto; }

/* ── GRID card ── */
.blog-list { max-width: 1080px; margin: 0 auto; padding: 24px 24px 80px; }
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 26px; }
.blog-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: transform .3s var(--ease-out), box-shadow .3s, border-color .3s; }
.blog-card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(10,22,40,.10); border-color: var(--border-m); }
.card-cover { aspect-ratio: 16 / 9; overflow: hidden; background: var(--bg-3); }
.card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease-out); }
.blog-card:hover .card-cover img { transform: scale(1.05); }
.card-cover-empty { display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--bg-3), var(--bg-2)); }
.card-body { padding: 20px 20px 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.card-title { font-size: 20px; font-weight: 700; line-height: 1.25; letter-spacing: -.4px; }
.card-excerpt { font-size: 14.5px; color: var(--ink-muted); flex: 1; }
.card-meta { font-size: 13px; color: var(--ink-dim); display: flex; gap: 8px; align-items: center; }

/* ── Tag ── */
.blog-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.blog-tag { font-size: 12px; font-weight: 600; color: var(--mint-deep); background: var(--bg-3); border: 1px solid var(--border-m); padding: 4px 10px; border-radius: 999px; transition: background .2s; }
a.blog-tag:hover { background: var(--border-m); }

/* ── ARTICOLO ── */
.blog-article { max-width: var(--maxw); margin: 0 auto; padding: 130px 24px 40px; }
.blog-article-head { margin-bottom: 26px; }
.blog-back { display: inline-block; font-size: 14px; font-weight: 600; color: var(--ink-muted); margin-bottom: 18px; transition: color .2s, transform .2s; }
.blog-back:hover { color: var(--mint-dark); transform: translateX(-3px); }
.blog-article-title { font-size: clamp(32px, 5.5vw, 54px); font-weight: 800; line-height: 1.08; letter-spacing: -1.4px; margin-top: 14px; }
.blog-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; font-size: 14.5px; color: var(--ink-muted); }
.blog-dot { color: var(--ink-dim); }
.blog-date { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; color: var(--ink-sub); }
.blog-date-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--mint-dark); box-shadow: 0 0 0 0 rgba(60,179,113,.5); animation: pulse 2.4s var(--ease-out) infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(60,179,113,.45); } 70% { box-shadow: 0 0 0 8px rgba(60,179,113,0); } 100% { box-shadow: 0 0 0 0 rgba(60,179,113,0); } }

.blog-cover { border-radius: var(--radius); overflow: hidden; margin: 8px 0 36px; border: 1px solid var(--border); }
.blog-cover img { width: 100%; max-height: 460px; object-fit: cover; }

/* ── PROSE (corpo Markdown) ── */
.blog-prose { font-size: 18px; color: var(--ink-sub); }
.blog-prose > * { max-width: 100%; }
.blog-prose p { margin: 0 0 24px; }
.blog-prose h2 { position: relative; font-size: 28px; font-weight: 800; letter-spacing: -.6px; color: var(--ink); margin: 46px 0 18px; padding-bottom: 12px; }
.blog-prose h2::after { content: ''; position: absolute; left: 0; bottom: 0; height: 3px; width: 56px; border-radius: 3px; background: linear-gradient(90deg, var(--mint), var(--mint-dark)); }
.blog-prose h3 { font-size: 21px; font-weight: 700; letter-spacing: -.4px; color: var(--ink); margin: 34px 0 14px; }
.blog-prose a { color: var(--mint-dark); font-weight: 600; text-decoration: underline; text-decoration-color: var(--border-m); text-underline-offset: 3px; transition: text-decoration-color .2s; }
.blog-prose a:hover { text-decoration-color: var(--mint-dark); }
.blog-prose ul, .blog-prose ol { margin: 0 0 24px; padding-left: 26px; }
.blog-prose li { margin-bottom: 10px; }
.blog-prose li::marker { color: var(--mint-dark); }
.blog-prose strong { color: var(--ink); font-weight: 700; }
.blog-prose img { border-radius: var(--radius); border: 1px solid var(--border); margin: 12px 0 28px; }
.blog-prose blockquote { margin: 0 0 28px; padding: 6px 0 6px 24px; border-left: 4px solid var(--mint); background: var(--bg-2); border-radius: 0 12px 12px 0; color: var(--ink-sub); font-style: italic; }
.blog-prose blockquote p { margin: 8px 0; }
.blog-prose code { font-family: 'SFMono-Regular', ui-monospace, Menlo, monospace; font-size: .88em; background: var(--bg-3); padding: 2px 7px; border-radius: 6px; color: var(--mint-deep); }
.blog-prose pre { background: var(--ink); color: #E5E7EB; padding: 20px 22px; border-radius: var(--radius); overflow-x: auto; margin: 0 0 28px; }
.blog-prose pre code { background: none; color: inherit; padding: 0; }

/* Lineetta divisoria animata (Markdown ---) */
.blog-prose hr { border: none; height: 40px; margin: 14px 0; position: relative; }
.blog-prose hr::before { content: ''; position: absolute; top: 50%; left: 50%; transform: translateX(-50%); width: 180px; max-width: 60%; height: 2px; background: linear-gradient(90deg, transparent, var(--border-m), transparent); }
.blog-prose hr::after { content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 8px; height: 8px; border-radius: 50%; background: var(--mint-dark); box-shadow: 0 0 0 4px var(--bg), 0 0 0 5px var(--border-m); }

/* ── Footer ── */
.blog-footer { margin-top: 40px; }
.blog-footer-cta { background: linear-gradient(135deg, #07100C, #0C1A14); color: #fff; text-align: center; padding: 64px 24px; }
.blog-footer-cta h3 { font-size: clamp(26px, 4vw, 38px); font-weight: 800; letter-spacing: -.8px; }
.blog-footer-cta p { color: rgba(255,255,255,.7); margin: 14px auto 28px; max-width: 460px; font-size: 17px; }
.blog-footer-bottom { max-width: 1080px; margin: 0 auto; padding: 26px 24px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px; font-size: 14px; color: var(--ink-muted); }
.blog-footer-bottom nav { display: flex; gap: 20px; }
.blog-footer-bottom a:hover { color: var(--mint-dark); }

/* ── Empty state ── */
.blog-empty { text-align: center; padding: 80px 24px; color: var(--ink-muted); font-size: 18px; }