/* ── Reveal base ─────────────────────────────────────────── */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity  var(--transition-reveal),
    transform var(--transition-reveal);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

[data-reveal="left"] {
  transform: translateX(-40px);
}
[data-reveal="left"].is-visible {
  transform: none;
}

[data-reveal="right"] {
  transform: translateX(40px);
}
[data-reveal="right"].is-visible {
  transform: none;
}

[data-reveal="scale"] {
  transform: scale(0.9);
}
[data-reveal="scale"].is-visible {
  transform: none;
}

[data-reveal="fade"] {
  transform: none;
}
[data-reveal="fade"].is-visible {
  opacity: 1;
}

/* ── Stagger delays ──────────────────────────────────────── */
[data-delay="1"] { transition-delay: 0.1s; }
[data-delay="2"] { transition-delay: 0.2s; }
[data-delay="3"] { transition-delay: 0.3s; }
[data-delay="4"] { transition-delay: 0.4s; }
[data-delay="5"] { transition-delay: 0.5s; }
[data-delay="6"] { transition-delay: 0.6s; }
[data-delay="7"] { transition-delay: 0.7s; }
[data-delay="8"] { transition-delay: 0.8s; }

/* ── Keyframes ───────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.85); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes charReveal {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 8px var(--color-accent-glow); }
  50%       { box-shadow: 0 0 24px var(--color-accent-glow), 0 0 48px var(--color-accent-glow); }
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-12px); }
}

@keyframes borderGlow {
  0%, 100% { border-color: var(--color-border); }
  50%       { border-color: var(--color-accent-dim); }
}

/* ── Utility animation classes ───────────────────────────── */
.animate-fadeUp    { animation: fadeUp 0.7s var(--transition-reveal) both; }
.animate-fadeIn    { animation: fadeIn 0.7s ease both; }
.animate-float     { animation: floatY 4s ease-in-out infinite; }
.animate-glow      { animation: glow 3s ease-in-out infinite; }
.animate-pulse     { animation: pulse 2s ease-in-out infinite; }

/* ── Shimmer loading skeleton ────────────────────────────── */
@keyframes shimmer {
  from { background-position: -400px 0; }
  to   { background-position: 400px 0; }
}