/* ============================================================
   Rivera Construction — Animations
   ============================================================ */

/* ── Scroll Reveal ─────────────────────────────────── */
.reveal-fade {
  opacity: 0;
  transition: opacity var(--dur-reveal) var(--ease-out);
}
.reveal-fade.is-visible {
  opacity: 1;
}

.reveal-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--dur-reveal) var(--ease-out),
              transform var(--dur-reveal) var(--ease-out);
}
.reveal-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity var(--dur-reveal) var(--ease-out),
              transform var(--dur-reveal) var(--ease-out);
}
.reveal-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity var(--dur-reveal) var(--ease-out),
              transform var(--dur-reveal) var(--ease-out);
}
.reveal-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger children */
.reveal-up:nth-child(1) { transition-delay: 0ms; }
.reveal-up:nth-child(2) { transition-delay: 80ms; }
.reveal-up:nth-child(3) { transition-delay: 160ms; }
.reveal-up:nth-child(4) { transition-delay: 240ms; }
.reveal-up:nth-child(5) { transition-delay: 320ms; }
.reveal-up:nth-child(6) { transition-delay: 400ms; }

/* ── Counter ───────────────────────────────────────── */
.stat-number {
  will-change: contents;
}

/* ── Tab panel ─────────────────────────────────────── */
@keyframes tabFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Gallery track ─────────────────────────────────── */
.gallery-track {
  will-change: transform;
}

/* ── Particle dot ──────────────────────────────────── */
.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--color-accent);
  opacity: 0;
  animation: particleDrift linear infinite;
}
@keyframes particleDrift {
  0% {
    opacity: 0;
    transform: translateY(0) scale(0);
  }
  10% {
    opacity: 0.6;
    transform: translateY(-20px) scale(1);
  }
  90% {
    opacity: 0.2;
  }
  100% {
    opacity: 0;
    transform: translateY(-120px) scale(0.5);
  }
}

/* ── Glow pulse on accent elements ─────────────────── */
@keyframes glowPulse {
  0%, 100% { box-shadow: var(--glow-accent-sm); }
  50%       { box-shadow: var(--glow-accent); }
}

/* ── Nav underline wipe ─────────────────────────────── */
.nav-links li a::after {
  will-change: width;
}

/* ── Scroll-hint line pulse ─────────────────────────── */
@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50%       { opacity: 1;   transform: scaleY(1.2); }
}

/* ── Hero text entrance ─────────────────────────────── */
@keyframes heroFadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Image zoom-in on load ──────────────────────────── */
@keyframes imgReveal {
  from { transform: scale(1.08); }
  to   { transform: scale(1); }
}
.about-img-wrap img {
  animation: imgReveal 1.2s var(--ease-out) both;
}

/* ── Stat card hover glow pulse ─────────────────────── */
.stat-item:hover {
  animation: glowPulse 2s ease-in-out infinite;
}