/* ============================================
   ANIMATIONS — Tempero a Mais
   ============================================ */

/* === KEYFRAMES === */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* === SCROLL-TRIGGERED (via IntersectionObserver) === */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
}

.reveal--left.reveal--visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal--right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
}

.reveal--right.reveal--visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal--scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
}

.reveal--scale.reveal--visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--ease-out-expo), transform 0.5s var(--ease-out-expo);
}

.reveal-stagger--visible > *:nth-child(1) { transition-delay: 0ms; opacity: 1; transform: translateY(0); }
.reveal-stagger--visible > *:nth-child(2) { transition-delay: 80ms; opacity: 1; transform: translateY(0); }
.reveal-stagger--visible > *:nth-child(3) { transition-delay: 160ms; opacity: 1; transform: translateY(0); }
.reveal-stagger--visible > *:nth-child(4) { transition-delay: 240ms; opacity: 1; transform: translateY(0); }
.reveal-stagger--visible > *:nth-child(5) { transition-delay: 320ms; opacity: 1; transform: translateY(0); }
.reveal-stagger--visible > *:nth-child(6) { transition-delay: 400ms; opacity: 1; transform: translateY(0); }
.reveal-stagger--visible > *:nth-child(7) { transition-delay: 480ms; opacity: 1; transform: translateY(0); }
.reveal-stagger--visible > *:nth-child(8) { transition-delay: 560ms; opacity: 1; transform: translateY(0); }
.reveal-stagger--visible > *:nth-child(9) { transition-delay: 640ms; opacity: 1; transform: translateY(0); }

/* === FALLING LEAVES (lateral sections only) === */

@keyframes leafDrift {
  0% {
    top: -100px;
    opacity: 0;
    transform: rotate(0deg);
  }
  5% {
    opacity: 0.7;
  }
  90% {
    opacity: 0.5;
  }
  100% {
    top: calc(100% + 50px);
    opacity: 0;
    transform: rotate(340deg);
  }
}

@keyframes leafSway {
  0%, 100% { transform: translateX(0) rotate(0deg); }
  25% { transform: translateX(25px) rotate(10deg); }
  75% { transform: translateX(-25px) rotate(-10deg); }
}

.section-leaves {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: visible;
}

.leaf {
  position: absolute;
  top: -100px;
  opacity: 0;
  animation: leafDrift linear infinite;
  will-change: top, opacity, transform;
}

.leaf svg,
.leaf img {
  display: block;
  animation: leafSway 4s ease-in-out infinite;
  filter: drop-shadow(1px 2px 3px rgba(0,0,0,0.2));
}

/* Left side leaves */
.leaf--l1 { left: 1%;  animation-duration: 18s; animation-delay: 0s; }
.leaf--l2 { left: 4%;  animation-duration: 22s; animation-delay: 3s; }
.leaf--l3 { left: 8%;  animation-duration: 16s; animation-delay: 6s; }
.leaf--l4 { left: 2%;  animation-duration: 20s; animation-delay: 10s; }

/* Right side leaves */
.leaf--r1 { right: 1%; left: auto; animation-duration: 20s; animation-delay: 1.5s; }
.leaf--r2 { right: 4%; left: auto; animation-duration: 17s; animation-delay: 5s; }
.leaf--r3 { right: 8%; left: auto; animation-duration: 23s; animation-delay: 8s; }
.leaf--r4 { right: 2%; left: auto; animation-duration: 19s; animation-delay: 12s; }

/* Sizes */
.leaf--sm svg, .leaf--sm img { width: 45px; height: 55px; object-fit: contain; }
.leaf--md svg, .leaf--md img { width: 60px; height: 72px; object-fit: contain; }
.leaf--lg svg, .leaf--lg img { width: 75px; height: 90px; object-fit: contain; }

/* Sway variations */
.leaf--r1 svg, .leaf--r1 img,
.leaf--l3 svg, .leaf--l3 img { animation-direction: reverse; }

.leaf--r2 svg, .leaf--r2 img,
.leaf--l4 svg, .leaf--l4 img { animation-duration: 5s; }

.leaf--r3 svg, .leaf--r3 img { animation-duration: 3.5s; }

/* === PREFERS REDUCED MOTION === */

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal--left,
  .reveal--right,
  .reveal--scale,
  .reveal-stagger > * {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__scroll {
    animation: none;
  }

  .section-leaves {
    display: none;
  }

  .glass-card,
  .glass-card--link,
  .product-card,
  .recipe-card,
  .btn-primary,
  .btn-secondary,
  .btn-whatsapp,
  .whatsapp-float {
    transition: none;
  }
}