/* ---------- Keyframes ---------- */
@keyframes tab-in {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-14px);
  }
}

@keyframes pulse-ring {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.7;
  }
  50% {
    transform: scale(1.06);
    opacity: 0.25;
  }
}

@keyframes msg-in {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes typing-blink {
  0%,
  80%,
  100% {
    opacity: 0.25;
    transform: translateY(0);
  }
  40% {
    opacity: 1;
    transform: translateY(-3px);
  }
}

@keyframes bar-fill {
  from {
    width: 0;
  }
}

@keyframes nav-hint-in {
  from {
    opacity: 0;
    transform: translate(8px, -50%);
  }
  to {
    opacity: 1;
    transform: translate(0, -50%);
  }
}

@keyframes nav-hint-nudge {
  0%,
  100% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(-4px);
  }
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  transition-delay: var(--reveal-delay, 0s);
}

.reveal.revealed {
  opacity: 1;
  transform: none;
}

/* Stagger helpers */
.stagger > .reveal:nth-child(2) {
  --reveal-delay: 0.08s;
}

.stagger > .reveal:nth-child(3) {
  --reveal-delay: 0.16s;
}

.stagger > .reveal:nth-child(4) {
  --reveal-delay: 0.24s;
}

.stagger > .reveal:nth-child(5) {
  --reveal-delay: 0.32s;
}

.stagger > .reveal:nth-child(6) {
  --reveal-delay: 0.4s;
}

.stagger > .reveal:nth-child(7) {
  --reveal-delay: 0.48s;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}