*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  font-family: Arial, sans-serif;
  color: var(--ink);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.3s;
}

/* ── NOISE TEXTURE OVERLAY ── */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 50; opacity: 0.4;
}

@keyframes pulse { 0%,100%{opacity:.4} 50%{opacity:.8} }
@keyframes fadeIn { from{opacity:0;transform:translateY(6px)} to{opacity:1;transform:none} }
@keyframes slideUp { from{transform:translateY(12px);opacity:0} to{transform:none;opacity:1} }
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}