/* =========================================================================
   Animation utilities — used sparingly and deliberately:
   - reveal-on-scroll for section entrances
   - auth-card entrance
   - fade/slide helpers reused by JS-rendered content
   ========================================================================= */

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 640ms cubic-bezier(0.16, 1, 0.3, 1), transform 640ms cubic-bezier(0.16, 1, 0.3, 1);
}
[data-reveal].revealed { opacity: 1; transform: translateY(0); }

[data-reveal-group] > * { opacity: 0; transform: translateY(16px); transition: opacity 560ms cubic-bezier(0.16,1,0.3,1), transform 560ms cubic-bezier(0.16,1,0.3,1); }
[data-reveal-group].revealed > * { opacity: 1; transform: translateY(0); }
[data-reveal-group].revealed > *:nth-child(1) { transition-delay: 0ms; }
[data-reveal-group].revealed > *:nth-child(2) { transition-delay: 70ms; }
[data-reveal-group].revealed > *:nth-child(3) { transition-delay: 140ms; }
[data-reveal-group].revealed > *:nth-child(4) { transition-delay: 210ms; }
[data-reveal-group].revealed > *:nth-child(5) { transition-delay: 280ms; }
[data-reveal-group].revealed > *:nth-child(6) { transition-delay: 350ms; }

.auth-shell { min-height: calc(100vh - 160px); display: flex; align-items: center; justify-content: center; padding: 48px 20px; }
.auth-card { width: 100%; max-width: 420px; animation: auth-in 620ms cubic-bezier(0.16, 1, 0.3, 1); }
@keyframes auth-in { from { opacity: 0; transform: translateY(24px) scale(0.98); } to { opacity: 1; transform: translateY(0) scale(1); } }

.fade-in { animation: simple-fade 400ms ease-out; }
@keyframes simple-fade { from { opacity: 0; } to { opacity: 1; } }

.pulse-dot { position: relative; }
.pulse-dot::after {
  content: ''; position: absolute; inset: 0; border-radius: inherit; background: currentColor; opacity: 0.5;
  animation: pulse-ring 1.6s cubic-bezier(0.16, 1, 0.3, 1) infinite;
}
@keyframes pulse-ring { 0% { transform: scale(1); opacity: 0.4; } 100% { transform: scale(1.9); opacity: 0; } }

.confirm-check {
  width: 76px; height: 76px; border-radius: 50%; background: var(--color-success-light); color: var(--color-success);
  display: flex; align-items: center; justify-content: center; margin: 0 auto 20px;
  animation: check-pop 560ms cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes check-pop { 0% { transform: scale(0.5); opacity: 0; } 70% { transform: scale(1.08); opacity: 1; } 100% { transform: scale(1); } }

@media (prefers-reduced-motion: reduce) {
  [data-reveal], [data-reveal-group] > * { opacity: 1 !important; transform: none !important; transition: none !important; }
}