/* ==========================================================
   Kai Mana — Footer Contract (M2B)
   --------------------------------------------------
   Shared footer styles. Two variants: full and compact.
   See: kai-mana/_shared/NOTES-footer.md
   ========================================================== */

:root {
  --footer-pad-y:        3rem;
  --footer-pad-x:        1.5rem;
  --footer-gap:          2rem;
  --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-accent:       var(--km-sunrise, #f4a261);
  --footer-border:       var(--km-foam-faint, rgba(232, 244, 248, 0.12));
  --footer-font:         var(--font-body, 'Work Sans', system-ui, sans-serif);
  --footer-font-display: var(--font-display, 'Cormorant Garamond', Georgia, serif);
  /* M3: animation tokens resolve to shared animation.css */
  --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
   ========================================================== */

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

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

/* ==========================================================
   Full variant — two-column on desktop, stacked on mobile
   ========================================================== */

.km-footer--full .km-footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--footer-gap);
}

@media (min-width: 768px) {
  .km-footer--full .km-footer__inner {
    grid-template-columns: 1fr 2fr;
    gap: calc(var(--footer-gap) * 2);
  }
}

/* Brand block */

.km-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--footer-ink);
  font-family: var(--footer-font-display);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color var(--footer-dur-fast) var(--footer-ease);
}
.km-footer__logo:hover,
.km-footer__logo:focus-visible {
  color: var(--footer-accent);
}
.km-footer__logo img {
  display: block;
}

.km-footer__tagline {
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
  color: var(--footer-ink-muted);
  line-height: 1.5;
}

.km-footer__social {
  margin-top: 1rem;
  display: flex;
  gap: 1rem;
}
.km-footer__social a {
  color: var(--footer-ink-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color var(--footer-dur-fast) var(--footer-ease);
}
.km-footer__social a:hover,
.km-footer__social a:focus-visible {
  color: var(--footer-accent);
}

/* Nav columns */

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

@media (min-width: 768px) {
  .km-footer__nav {
    grid-template-columns: repeat(4, 1fr);
  }
}

.km-footer__nav-heading {
  font-family: var(--footer-font);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--footer-ink-muted);
  margin: 0 0 0.85rem;
}

.km-footer__nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.km-footer__nav-list a {
  display: block;
  font-size: 0.95rem;
  font-weight: 400;
  line-height: 1.35;
  color: var(--footer-ink);
  text-decoration: none;
  padding: 0.25rem 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);
}

/* ==========================================================
   Compact variant — single row
   ========================================================== */

.km-footer--compact {
  padding: 1.5rem var(--footer-pad-x);
}

.km-footer--compact .km-footer__inner {
  display: flex;
  justify-content: center;
  align-items: center;
}

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

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