/* ============================================
   DDD Shared Footer
   ============================================ */

footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0 2.5rem;
}
footer .container { position: relative; z-index: 1; }

.footer-closing {
  text-align: center; font-size: 0.88rem; color: var(--text-muted);
  margin-bottom: 1.5rem; line-height: 1.6;
  max-width: 460px; margin-left: auto; margin-right: auto;
}
.footer-inner {
  display: flex; justify-content: center; align-items: center;
  flex-wrap: wrap; gap: 0.75rem; font-size: 0.85rem;
  color: var(--text-muted); padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}
.footer-links { display: flex; gap: 1.25rem; flex-wrap: wrap; justify-content: center; }
.footer-links a { color: var(--text-muted); transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }
.footer-divider {
  width: 1px; height: 14px; background: var(--border);
  align-self: center; flex-shrink: 0;
}
.footer-attr { font-size: 0.88rem; color: var(--text-secondary); }
.footer-attr a { color: var(--text-secondary); font-weight: 500; }
.footer-attr a:hover { color: var(--accent); }

/* ---- Structured public footer (core pages) ----
   Compact trust band, not a sitemap: one wrapped link row, one muted
   copyright line. No brand mark — keep this list at methodology/
   developers/partners/contact/X only — don't grow it into a sitemap. */
footer.page-footer {
  display: block;
  width: 100%;
  margin: 1.75rem auto 0;
  padding: 12px max(20px, env(safe-area-inset-left)) calc(18px + env(safe-area-inset-bottom, 0px)) max(20px, env(safe-area-inset-right));
  font-family: var(--sans);
  color: var(--text-muted);
  letter-spacing: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  background: none;
}
.page-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  width: min(640px, 100%);
  margin: 0 auto;
  text-align: center;
}
.page-footer__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.3rem 0.5rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.02em;
}
.page-footer__links a {
  color: rgba(226, 232, 240, 0.62);
  text-decoration: none;
  transition: color 0.18s ease;
}
.page-footer__links a:hover {
  color: var(--accent);
}
.page-footer__links a.page-footer__x {
  display: inline-flex;
  align-items: center;
}
.page-footer__bottom {
  margin: 0;
  color: rgba(226, 232, 240, 0.42);
  font-size: 0.74rem;
}
.page-footer__sep {
  color: rgba(226, 232, 240, 0.24);
}
.footer-compact-icon { display: inline-flex; align-items: center; }
.footer-compact-icon svg { opacity: 0.5; transition: opacity 0.2s; }
.footer-compact-icon:hover svg { opacity: 1; }
.footer-sep { color: rgba(255,255,255,0.1); margin: 0 0.05rem; }

/* ---- Signup block (subpages) ----
   Default width matches the narrative reading column. Wide-content
   pages (issuers, chains, history) override .signup-block max-width
   via their inline style so the top separator lines up with the data
   container edges. */
.signup-block {
  text-align: center;
  max-width: 520px;
  margin: 3.5rem auto 0;
  padding: 2.5rem 24px 0;
  border-top: 1px solid var(--border);
}
.signup-block .signup-kicker { font-family: var(--mono); font-size: 11px; font-weight: 500; color: var(--accent); text-transform: uppercase; letter-spacing: 0.15em; margin: 0 0 0.75rem; }
.signup-block h3 { font-family: var(--serif-display); font-size: clamp(1.8rem, 4vw, 2.1rem); font-weight: 400; color: var(--text); margin: 0 auto 0.65rem; letter-spacing: -0.005em; line-height: 1.2; max-width: 560px; }
.signup-block .signup-description { font-family: var(--sans); font-size: 17px; font-weight: 400; color: var(--text-secondary); line-height: 1.45; margin: 0 auto 26px; max-width: 460px; }
.signup-block .subscribe-form { display: flex; gap: 0; margin: 0 auto; max-width: 380px; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; transition: border-color 0.2s; }
.signup-block .subscribe-form:focus-within { border-color: var(--accent); }
.signup-block .subscribe-form input { flex: 1; background: none; border: none; color: var(--text); font-family: var(--sans); font-size: 0.85rem; padding: 0.6rem 0.85rem; outline: none; min-width: 0; }
.signup-block .subscribe-form input::placeholder { color: var(--text-muted); }
.signup-block .subscribe-form button { background: var(--accent); color: var(--bg); border: none; font-family: var(--sans); font-size: 0.8rem; font-weight: 600; padding: 0.6rem 1rem; cursor: pointer; transition: opacity 0.2s; white-space: nowrap; }
.signup-block .subscribe-form button:hover { opacity: 0.85; }
.signup-block .subscribe-msg { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.5rem; min-height: 1.2em; }
.signup-block .signup-check { display: flex; align-items: flex-start; gap: 0.45rem; max-width: 380px; margin: 0.65rem auto 0; text-align: left; font-size: 0.78rem; color: var(--text-muted); cursor: pointer; }
.signup-block .signup-check input { margin-top: 3px; flex-shrink: 0; }

@media (max-width: 600px) {
  .page-footer__links a {
    min-height: 32px;
    display: inline-flex;
    align-items: center;
  }
  .page-footer a,
  .footer-compact-icon {
    min-height: 44px;
  }
  .footer-inner { flex-direction: column; text-align: center; gap: 0.75rem; }
  .footer-links { justify-content: center; }
  .footer-links a { min-height: 44px; display: flex; align-items: center; }
}