/* ============================================================
   COMPONENTS — nav, buttons, chips, ticker, footer, scroll-top
   ============================================================ */

/* ---------- navigation ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background 0.35s ease, border-color 0.35s ease;
}
.nav.scrolled {
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom-color: var(--line);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.nav-logo em { color: var(--pink); font-weight: 700; }
.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  transition: color 0.2s ease;
}
.nav-link sup { color: var(--pink); margin-right: 3px; font-size: 0.62rem; }
.nav-link:hover, .nav-link.active { color: var(--ink); }
.nav-link.active { text-decoration: underline; text-underline-offset: 5px; text-decoration-color: var(--purple); }
.nav-cta {
  border: 1px solid var(--ink);
  padding: 7px 14px;
  color: var(--ink);
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.nav-cta:hover { background: var(--ink); color: var(--paper-card); box-shadow: 3px 3px 0 var(--pink); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span { width: 26px; height: 2px; background: var(--ink); transition: transform 0.3s var(--ease); }
.nav-toggle.open span:first-child { transform: translateY(4px) rotate(45deg); }
.nav-toggle.open span:last-child { transform: translateY(-4px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: var(--paper);
  display: none;
  align-items: center;
  justify-content: center;
}
.mobile-menu.open { display: flex; }
.mobile-menu ul { display: flex; flex-direction: column; gap: 22px; text-align: center; }
.mobile-menu a { font-family: var(--font-display); font-size: 1.7rem; font-weight: 500; }
.mobile-menu a sup { font-family: var(--font-mono); font-size: 0.7rem; color: var(--pink); margin-right: 8px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 12px 22px;
  border: 1px solid var(--ink);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s, color 0.2s;
}
.btn-ink { background: var(--ink); color: var(--paper-card); box-shadow: 4px 4px 0 var(--pink); }
.btn-ink:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--pink); }
.btn-line { background: transparent; color: var(--ink); }
.btn-line:hover { background: var(--ink); color: var(--paper-card); box-shadow: 4px 4px 0 var(--purple); transform: translate(-2px, -2px); }

/* ---------- chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
.chips li {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  padding: 4px 10px;
  background: var(--paper);
  transition: border-color 0.2s, color 0.2s;
}
.chips li:hover { border-color: var(--purple); color: var(--purple); }
.chips-sm li { font-size: 0.66rem; padding: 3px 8px; }
.chips-cert li { border-color: var(--yellow); color: var(--yellow); background: transparent; }

/* ---------- ticker ---------- */
.ticker {
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  background: var(--paper-card);
  overflow: hidden;
  padding: 12px 0;
}
.ticker-track {
  display: flex;
  gap: 28px;
  width: max-content;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  animation: ticker 40s linear infinite;
}
.ticker-track i { color: var(--pink); font-style: normal; }
.ticker-track i:nth-of-type(3n) { color: var(--yellow); }
.ticker-track i:nth-of-type(3n + 1) { color: var(--purple); }
.ticker-track span { white-space: nowrap; }
@keyframes ticker { to { transform: translateX(-50%); } }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--ink); padding: 26px 0; }
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
}
.footer-colophon { font-style: italic; }

/* ---------- scroll-top ---------- */
.scroll-top {
  position: fixed;
  bottom: 26px;
  right: 26px;
  z-index: 80;
  width: 44px;
  height: 44px;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  background: var(--paper-card);
  color: var(--ink);
  border: 1px solid var(--ink);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.scroll-top.show { opacity: 1; pointer-events: auto; }
.scroll-top:hover { transform: translate(-2px, -2px); box-shadow: 4px 4px 0 var(--pink); }