/* ==========================================================
   Kai Mana — Footer Contract (M2B / 2026-08-14 redesign)

   Two variants share the SAME layout shell:
     - km-footer--full    (Home, EPK, Music hub, About)
     - km-footer--compact (song pages, character pages, etc.)

   Layout (both variants):

     ┌──────────────────────────────────────────────────────────┐
     │  ┌────┐                                                  │
     │  │LOGO│  KAI MANA        Music · Story · Project          │
     │  └────┘  Tagline copy                                    │
     │  ─────────────────────────────────────────────────────── │
     │  © 2026     Built on Maui       Privacy · Disclaimer      │
     └──────────────────────────────────────────────────────────┘

   Design notes:
     - Logo lives in a square foam-faint "frame" so it reads as a
       visual anchor, not a tiny mark.
     - Brand name is display-font (Cormorant Garamond), uppercase,
       letter-spaced — gives the footer typographic weight.
     - Tagline is the secondary voice: muted foam-dim, smaller.
     - Nav uses Work Sans, single weight, no decoration.
     - Legal strip is separated by a thin foam-faint divider and
       uses micro-type (0.78rem) for clear hierarchy.
     - The footer should feel like the close of a magazine
       spread: confident, quiet, room to breathe.

   See: kai-mana/_shared/NOTES-footer.md
   ========================================================== */

:root {
  --footer-pad-y:        4rem;
  --footer-pad-x:        1.75rem;
  --footer-gap:          2.5rem;
  --footer-max-w:        1200px;
  --footer-bg:           var(--km-ocean-deep, #0b1f2a);
  --footer-ink:          var(--km-foam, #e8f4f8);
  --footer-ink-muted:    var(--km-foam-dim, #8fb8c8);
  --footer-ink-soft:     rgba(232, 244, 248, 0.55);
  --footer-accent:       var(--km-sunrise, #f4a261);
  --footer-border:       var(--km-foam-faint, rgba(232, 244, 248, 0.12));
  --footer-border-soft:  rgba(232, 244, 248, 0.08);
  --footer-font:         var(--font-body, 'Work Sans', system-ui, sans-serif);
  --footer-font-display: var(--font-display, 'Cormorant Garamond', Georgia, serif);
  --footer-dur-fast:     var(--dur-fast, 160ms);
  --footer-dur-med:      var(--dur-med,  320ms);
  --footer-ease:         var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1));
}

/* ==========================================================
   Base shell (shared by both variants)
   ========================================================== */

.km-footer {
  background: var(--footer-bg);
  color: var(--footer-ink);
  font-family: var(--footer-font);
  padding: var(--footer-pad-y) var(--footer-pad-x) 2rem;
  border-top: 1px solid var(--footer-border);
}

.km-footer__inner {
  max-width: var(--footer-max-w);
  margin: 0 auto;
}

/* ==========================================================
   TOP: brand + nav
   ========================================================== */

.km-footer__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}

@media (min-width: 768px) {
  .km-footer__top {
    grid-template-columns: 1fr 1.6fr;
    gap: 4rem;
  }
}

/* ---------- Brand block ---------- */

.km-footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 1.25rem;
  text-decoration: none;
  color: var(--footer-ink);
  transition: opacity var(--footer-dur-fast) var(--footer-ease);
}
.km-footer__brand:hover,
.km-footer__brand:focus-visible {
  opacity: 0.85;
}

.km-footer__logo-frame {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 88px;
  height: 88px;
  padding: 12px;
  border: 1px solid var(--footer-border);
  border-radius: 6px;
  background:
    radial-gradient(circle at 30% 30%,
      rgba(244, 162, 97, 0.06),
      transparent 60%),
    rgba(232, 244, 248, 0.02);
  flex-shrink: 0;
  transition: border-color var(--footer-dur-med) var(--footer-ease);
}
.km-footer__brand:hover .km-footer__logo-frame,
.km-footer__brand:focus-visible .km-footer__logo-frame {
  border-color: var(--footer-accent);
}

.km-footer__logo-frame img {
  display: block;
  width: 64px;
  height: 64px;
}

.km-footer__brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.km-footer__brand-name {
  font-family: var(--footer-font-display);
  font-size: 1.6rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  line-height: 1;
}

.km-footer__tagline {
  font-size: 0.85rem;
  color: var(--footer-ink-muted);
  line-height: 1.5;
  max-width: 28ch;
}

/* ---------- Nav columns ---------- */

.km-footer__nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

@media (max-width: 599px) {
  .km-footer__nav {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
}

.km-footer__nav-heading {
  font-family: var(--footer-font);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--footer-ink-muted);
  margin: 0 0 1rem;
}

.km-footer__nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.km-footer__nav-list a {
  display: block;
  font-size: 0.95rem;
  font-weight: 400;
  line-height: 1.4;
  color: var(--footer-ink);
  text-decoration: none;
  padding: 0.2rem 0;
  transition: color var(--footer-dur-fast) var(--footer-ease);
}
.km-footer__nav-list a:hover,
.km-footer__nav-list a:focus-visible {
  color: var(--footer-accent);
}

/* ==========================================================
   BOTTOM: legal strip
   ========================================================== */

.km-footer__legal {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--footer-border-soft);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 1.25rem;
  font-size: 0.78rem;
  color: var(--footer-ink-soft);
  letter-spacing: 0.02em;
}

.km-footer__copyright {
  color: var(--footer-ink-muted);
}

.km-footer__location {
  color: var(--footer-ink-soft);
  font-style: italic;
}

.km-footer__legal-links {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.km-footer__legal-links a {
  color: var(--footer-ink-muted);
  text-decoration: none;
  transition: color var(--footer-dur-fast) var(--footer-ease);
}
.km-footer__legal-links a:hover,
.km-footer__legal-links a:focus-visible {
  color: var(--footer-accent);
}

.km-footer__sep {
  color: var(--footer-ink-soft);
  user-select: none;
}

@media (max-width: 599px) {
  .km-footer__legal-links {
    margin-left: 0;
    width: 100%;
  }
}

/* ==========================================================
   Legacy compact variant (single-row legal strip)
   Kept so any un-migrated pages still render sensibly.
   ========================================================== */

.km-footer__legal-strip {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.78rem;
  color: var(--footer-ink-muted);
}

.km-footer__legal-strip a {
  color: var(--footer-ink-muted);
  text-decoration: none;
  transition: color var(--footer-dur-fast) var(--footer-ease);
}
.km-footer__legal-strip a:hover,
.km-footer__legal-strip a:focus-visible {
  color: var(--footer-accent);
}

.km-footer__back-top {
  margin-left: auto;
}

/* ==========================================================
   Focus rings (a11y — §10: never remove, 2px ring, 3px offset)
   ========================================================== */

.km-footer a:focus-visible {
  outline: 2px solid var(--footer-accent);
  outline-offset: 3px;
}

/* ==========================================================
   Reduced motion
   ========================================================== */

@media (prefers-reduced-motion: reduce) {
  .km-footer a,
  .km-footer__logo-frame {
    transition: none;
  }
}