static/css/nav.css

/* =========================================================================
   nav.css — the floating glass island nav (shared across all pages)
   A detached frosted pill that drifts at the top, blurs the sky behind it.
   On scroll it gently shrinks + lifts. Mobile collapses to a compact pill.
   ========================================================================= */

.site-nav {
  position: fixed;
  top: clamp(0.8rem, 2vw, 1.4rem);
  left: 50%;
  transform: translateX(-50%);
  z-index: 40;                              /* below toast(50), above content */
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.5rem 0.45rem 1.1rem;
  background: var(--panel);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-pill);
  box-shadow: 0 10px 30px rgba(157, 170, 242, 0.18),
              inset 0 1px 0 rgba(255, 255, 255, 0.5);
  transition: transform var(--dur) var(--ease-soft),
              box-shadow var(--dur) var(--ease-soft),
              padding var(--dur) var(--ease-soft);
  max-width: calc(100vw - 1.6rem);
}

/* the scroll-shrunk state (toggled by JS on scroll past 40px) */
.site-nav.is-scrolled {
  transform: translateX(-50%) translateY(-2px) scale(0.97);
  box-shadow: 0 14px 38px rgba(157, 170, 242, 0.26),
              inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

/* brand wordmark inside the pill — purely visual, not a link
   (Home in the link group is the real home button, so the logo
   doesn't duplicate that target) */
.site-nav .nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--ink);
  letter-spacing: -0.01em;
  white-space: nowrap;
  user-select: none;
  cursor: default;
}
.site-nav .nav-brand .nav-logo {
  height: 34px;
  width: auto;
  flex-shrink: 0;
  display: block;
  /* transparent logo sits directly on the sky — no backing tile */
  filter: drop-shadow(0 2px 6px rgba(61, 44, 78, 0.18));
  transition: transform var(--dur-fast) var(--ease-soft);
}
.site-nav .nav-brand:hover .nav-logo { transform: rotate(-3deg); }

.site-nav .nav-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}
.site-nav .nav-brand .brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.site-nav .nav-brand .brand-sub {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  color: var(--rose-deep);
  opacity: 0.8;
}
@keyframes dot-pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(255, 143, 171, 0.22); }
  50%      { box-shadow: 0 0 0 5px rgba(255, 143, 171, 0.12); }
}

/* the link group */
.site-nav .nav-links {
  display: inline-flex;
  align-items: center;
  gap: 0.15rem;
  list-style: none;
}
.site-nav .nav-links a {
  display: inline-block;
  padding: 0.5em 0.95em;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-gentle),
              background var(--dur-fast) var(--ease-gentle);
}
.site-nav .nav-links a:hover {
  color: var(--ink);
  background: rgba(255, 143, 171, 0.12);
}
.site-nav .nav-links a[aria-current="page"] {
  color: var(--rose-deep);
  background: rgba(255, 143, 171, 0.16);
}

/* primary CTA anchored at the right of the pill */
.site-nav .nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  margin-left: 0.3rem;
  padding: 0.55em 1.1em;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, #ffa6c0 0%, var(--rose) 55%, var(--rose-deep) 100%);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
  box-shadow: 0 6px 16px rgba(232, 111, 146, 0.4),
              inset 0 1px 0 rgba(255, 255, 255, 0.5);
  transition: transform var(--dur-fast) var(--ease-soft),
              box-shadow var(--dur) var(--ease-soft);
  white-space: nowrap;
}
.site-nav .nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(232, 111, 146, 0.5),
              inset 0 1px 0 rgba(255, 255, 255, 0.5);
}
.site-nav .nav-cta:active { transform: translateY(0) scale(0.97); }

/* skip-link for keyboard users — visible only on focus */
.skip-link {
  position: fixed;
  top: 0.6rem;
  left: 50%;
  transform: translateX(-50%) translateY(-150%);
  z-index: 60;
  padding: 0.6em 1.2em;
  border-radius: var(--radius-pill);
  background: var(--ink);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  transition: transform var(--dur) var(--ease-soft);
}
.skip-link:focus {
  transform: translateX(-50%) translateY(0);
  outline: 3px solid var(--rose);
  outline-offset: 2px;
}

/* ---- mobile: collapse links, keep brand + cta ---- */
@media (max-width: 640px) {
  .site-nav { gap: 0.3rem; padding: 0.4rem 0.45rem 0.4rem 0.9rem; }
  .site-nav .nav-links { display: none; }       /* links live in footer on mobile */
  .site-nav .nav-brand { font-size: 0.95rem; }
  .site-nav .nav-cta { font-size: 0.82rem; padding: 0.5em 0.9em; }
}