/* ==========================================================================
   SAFE21 — ancora.html (the Àncòra plugin presentation page) stylesheet
   ==========================================================================

   Loaded AFTER blog.css, which provides everything shared with the rest of
   the site: the design tokens (dark + light theme), the header, the footer,
   the buttons, the theme toggle, the .anim-card and the closing CTA. This
   file adds only what is specific to the landing page: the hero, the
   timeline card, the fact ribbon, the feature grid, the install steps and
   the FAQ. Kept separate from blog.css on purpose: the 11 blog pages load
   blog.css, and none of them needs any of this.

   The site has no build step: plain CSS, loaded with a <link>.
   ========================================================================== */

/* ---------- Shared section rhythm ---------- */
.band { padding: 72px 0; }
/* Alternating background band, same device as the homepage sections. */
.band-alt {
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section-head { max-width: 720px; margin-bottom: 36px; }
.section-head h2 {
  font-size: 32px; font-weight: 700; letter-spacing: -0.3px;
}
.section-head .lede { font-size: 17px; color: var(--muted); margin: 14px 0 0; }

/* Generous prose defaults for the few free paragraphs on this page. */
.band p { color: var(--body); }
.prose { max-width: 820px; }
.prose p { font-size: 17px; margin: 0 0 20px; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--light); font-weight: 600; }
.band a.inline {
  color: var(--teal); text-decoration: underline; text-underline-offset: 3px;
}
.band a.inline:hover { color: var(--accent-hover); }

/* The "à" icon beside the motto paragraph (same pairing as the blog
   article): brand file used as-is, a hairline ring around the white tile. */
.icon-row { display: flex; align-items: center; gap: 18px; margin-top: 26px; }
.icon-row img {
  flex: 0 0 64px; width: 64px; height: 64px;
  border-radius: 14px; box-shadow: 0 0 0 1px var(--line);
}
.icon-row p { margin: 0; font-size: 16px; color: var(--muted); }

/* ---------- Hero ---------- */
.hero-ancora {
  background: var(--ink-2);
  border-bottom: 1px solid var(--line);
  padding: 72px 0 64px;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 56px;
  align-items: center;
}

/* The brand lockup ("àncòra" + slogan). Two <img> variants: the dark-
   background file (white word) shows on the default dark theme, the
   light-background file (ink word) when data-theme="light" is set. */
.hero-lockup { margin: 18px 0 26px; }
.hero-lockup img { width: min(360px, 78%); height: auto; }
.hero-lockup .lockup-light { display: none; }
[data-theme="light"] .hero-lockup .lockup-dark { display: none; }
[data-theme="light"] .hero-lockup .lockup-light { display: block; }

.hero-ancora h1 {
  font-size: 44px; font-weight: 700; letter-spacing: -0.5px;
  max-width: 540px;
}
.hero-sub {
  font-size: 19px; color: var(--muted);
  max-width: 520px; margin: 20px 0 0;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
/* Three buttons (#66: + "Leggi il manuale") on one row on every desktop
   width: between the one-column breakpoint (980px) and 1200px the hero
   column is narrow, so the buttons get a little less padding and gap there.
   Phones keep wrapping, there is no room for three in a row. */
@media (min-width: 981px) and (max-width: 1200px) {
  .hero-actions { gap: 10px; }
  .hero-actions .btn { padding: 12px 15px; font-size: 14.5px; }
}

/* One mono line of hard facts under the buttons. */
.hero-facts {
  font-family: 'Space Mono', monospace; font-size: 12px;
  letter-spacing: 1px; color: var(--muted);
  display: flex; flex-wrap: wrap; gap: 6px 10px;
  margin: 26px 0 0;
}
.hero-facts span::after { content: "·"; margin-left: 10px; color: var(--line); }
.hero-facts span:last-child::after { content: ""; }

/* ---------- Hero timeline card ----------
   The protocol in one glance: today → the delivery date, with the three
   will-executor copies in between. Plain HTML + CSS (no image), so it
   follows both themes and reflows on phones. */
.hero-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 30px;
  box-shadow: var(--card-shadow);
}
.hero-card .eyebrow { margin-bottom: 18px; }

.tl { list-style: none; margin: 0; padding: 0; }
.tl li { position: relative; padding: 0 0 24px 32px; }
.tl li:last-child { padding-bottom: 0; }
/* The dot. */
.tl li::before {
  content: ""; position: absolute; left: 4px; top: 5px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 4px var(--tint-teal-bg);
}
/* The connecting line between dots. */
.tl li:not(:last-child)::after {
  content: ""; position: absolute; left: 9px; top: 24px; bottom: 4px;
  width: 2px; background: var(--line);
}
/* Middle stop (the copies): hollow dot, it is custody rather than an event. */
.tl li.tl-mid::before { background: var(--panel); border: 2px solid var(--teal); }
/* Final stop (the delivery): the one Bitcoin-orange accent of the card. */
.tl li.tl-end::before {
  background: var(--orange);
  box-shadow: 0 0 0 4px var(--tint-btc-bg);
}
.tl .tl-t {
  font-family: 'Space Grotesk', sans-serif; font-weight: 600;
  font-size: 16.5px; color: var(--light); display: block;
}
.tl p { margin: 3px 0 0; font-size: 14.5px; color: var(--muted); line-height: 1.55; }

/* A gentle pulse on the "today" dot. The global reduced-motion rule in
   blog.css (animation: none !important) switches it off automatically. */
@keyframes tl-pulse {
  0%, 100% { box-shadow: 0 0 0 4px var(--tint-teal-bg); }
  50%      { box-shadow: 0 0 0 8px var(--tint-teal-bg); }
}
.tl li.tl-now::before { animation: tl-pulse 3s ease-in-out infinite; }

.hero-card .tl-note {
  margin: 22px 0 0; padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 14px; color: var(--muted); line-height: 1.6;
}
.hero-card .tl-note strong { color: var(--light); font-weight: 600; }

/* ---------- "In breve" strip under the animations ---------- */
.brief { list-style: none; margin: 26px 0 0; padding: 0; display: grid; gap: 10px; }
.brief li {
  display: flex; gap: 12px; align-items: flex-start;
  font-size: 16px; color: var(--body); line-height: 1.55;
}
.brief .n {
  font-family: 'Space Mono', monospace; font-size: 12px;
  color: var(--teal); flex: none; padding-top: 4px; min-width: 18px;
}

/* ---------- Feature grid ---------- */
.features {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px;
}
.feature {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 28px;
  box-shadow: var(--card-shadow);
}
.feature svg {
  width: 28px; height: 28px; color: var(--teal); margin-bottom: 16px;
}
.feature h3 { font-size: 18px; font-weight: 600; margin: 0 0 8px; }
.feature p { margin: 0; font-size: 15px; color: var(--muted); line-height: 1.6; }
.feature code {
  font-family: 'Space Mono', monospace; font-size: 0.88em; color: var(--light);
  background: var(--tint-teal-bg); border: 1px solid var(--tint-teal-bd);
  border-radius: 6px; padding: 1px 6px;
}

/* ---------- Install steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.step {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 26px;
  box-shadow: var(--card-shadow);
}
.step .num {
  font-family: 'Space Mono', monospace; font-size: 13px;
  color: var(--teal); display: block; margin-bottom: 10px;
}
.step h3 { font-size: 17px; font-weight: 600; margin: 0 0 8px; }
.step p { margin: 0; font-size: 15px; color: var(--muted); line-height: 1.6; }
.step a.inline {
  color: var(--teal); text-decoration: underline; text-underline-offset: 3px;
}
.steps-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }

/* The requirements box reuses .callout from blog.css; only the title row
   spacing is specific to this page. */
.band .callout { margin: 32px 0 0; }
.band .callout ul { margin: 0; padding-left: 20px; }
.band .callout li { font-size: 15.5px; color: var(--body); margin-bottom: 10px; }
.band .callout li:last-child { margin-bottom: 0; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 12px; max-width: 820px; }
.faq details {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--card-shadow);
}
.faq summary {
  cursor: pointer; list-style: none;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px 22px;
  font-family: 'Space Grotesk', sans-serif; font-weight: 600;
  font-size: 17px; color: var(--light);
}
.faq summary::-webkit-details-marker { display: none; }
/* +/− indicator drawn with text, so it inherits the theme colours. */
.faq summary::after {
  content: "+"; flex: none;
  font-family: 'Space Mono', monospace; font-size: 18px; color: var(--teal);
}
.faq details[open] summary::after { content: "\2212"; }
.faq details p { margin: 0; padding: 0 22px 20px; font-size: 15.5px; color: var(--body); line-height: 1.65; }
.faq details p + p { padding-top: 0; margin-top: -8px; }

/* ---------- Origin note (credit to the original BAL code) ---------- */
.origin {
  margin-top: 44px; padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 14px; color: var(--muted); line-height: 1.7;
  max-width: 820px;
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-ancora h1 { max-width: none; }
  .steps { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .band { padding: 52px 0; }
  .hero-ancora { padding: 48px 0 44px; }
  .hero-ancora h1 { font-size: 32px; }
  .hero-sub { font-size: 17px; }
  .section-head h2 { font-size: 26px; }
  .features { grid-template-columns: 1fr; }
  .feature, .step, .hero-card { padding: 22px 20px; }
}