/* =====================================================
   AKIBABIT FOOTER — CYBERPUNK GLASS (MOBILE SAFE)
   - No images
   - Safe-area aware
   - Desktop + Mobile responsive
   ===================================================== */

.ab-footer{
  --ab-red: #BC002D;
  --ab-white: rgba(255,255,255,0.92);
  --ab-dim: rgba(255,255,255,0.72);
  --ab-line: rgba(255,255,255,0.10);
  --ab-glass: rgba(10,10,14,0.72);

  position: relative;
  z-index: 6;
  margin-top: 56px;
  color: var(--ab-dim);
  background:
    radial-gradient(1000px 220px at 18% 0%, rgba(188,0,45,0.22), transparent 62%),
    radial-gradient(900px 220px at 82% 0%, rgba(255,255,255,0.06), transparent 62%),
    linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02)),
    var(--ab-glass);
  border-top: 1px solid rgba(188,0,45,0.35);
  box-shadow:
    0 -18px 60px rgba(0,0,0,0.60),
    0 -2px 0 rgba(255,255,255,0.06) inset;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.ab-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    repeating-linear-gradient(
      180deg,
      rgba(255,255,255,0.035) 0px,
      rgba(255,255,255,0.035) 1px,
      rgba(0,0,0,0) 3px,
      rgba(0,0,0,0) 6px
    );
  opacity: 0.22;
  mix-blend-mode: overlay;
}

.ab-footer-inner{
  max-width: 1200px;
  margin: 0 auto;
  padding: 22px 16px calc(22px + env(safe-area-inset-bottom));
}

.ab-footer-grid{
  display: grid;
  grid-template-columns: 1.55fr 1fr 1fr 1.1fr;
  gap: 18px 20px;
}

.ab-footer-col{ min-width: 0; }

.ab-footer-brand .ab-footer-mark{
  font-weight: 800;
  letter-spacing: 0.18em;
  color: var(--ab-white);
  font-size: 14px;
  line-height: 1.2;
}

.ab-footer-brand .ab-footer-gk{
  letter-spacing: 0.08em;
  font-weight: 600;
  opacity: 0.8;
  font-size: 12px;
}

.ab-footer-tagline{
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.45;
  opacity: 0.9;
}

.ab-footer-signal{
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.70);
}

.ab-footer-head{
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.82);
  margin-bottom: 10px;
}

.ab-footer-links{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.ab-footer-link{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 12px;
  border-radius: 999px;
  text-decoration: none;
  color: rgba(255,255,255,0.82);
  border: 1px solid rgba(255,255,255,0.14);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  box-shadow:
    0 8px 20px rgba(0,0,0,0.35);
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}

.ab-footer-link:hover{
  transform: translateY(-1px);
  border-color: rgba(188,0,45,0.55);
  box-shadow:
    0 10px 26px rgba(0,0,0,0.45),
    0 0 0 1px rgba(188,0,45,0.18) inset;
}

.ab-footer-link:active{ transform: translateY(0px); }

.ab-footer-disabled{
  opacity: 0.45;
  pointer-events: none;
  filter: grayscale(1);
}

.ab-footer-bottom{
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,0.10);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.ab-footer-copy{
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.70);
  display: inline-flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.ab-footer-sep{ opacity: 0.45; }

.ab-footer-micro{
  font-size: 12px;
  color: rgba(255,255,255,0.62);
  max-width: 520px;
  line-height: 1.5;
  text-align: right;
}

@media (max-width: 900px){
  .ab-footer-grid{ grid-template-columns: 1.3fr 1fr; }
  .ab-footer-micro{ text-align: left; }
}

@media (max-width: 560px){
  .ab-footer-grid{ grid-template-columns: 1fr; }
  .ab-footer-bottom{ flex-direction: column; }
  .ab-footer-micro{ max-width: none; }
}

@media (prefers-reduced-motion: reduce){
  .ab-footer-link{ transition: none; }
}