/* ==========================================================================
   SmileCare Dental — Animations
   ========================================================================== */

/* --- Keyframes --- */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

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

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

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

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

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-20px); }
}

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

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

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-fade {
  opacity: 0;
  transition: opacity 0.7s ease;
}

.reveal-fade.visible {
  opacity: 1;
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* --- Animation utility classes --- */
.animate-fade-in {
  animation: fadeIn 0.7s ease forwards;
}

.animate-fade-up {
  animation: fadeInUp 0.7s ease forwards;
}

.animate-fade-left {
  animation: fadeInLeft 0.7s ease forwards;
}

.animate-fade-right {
  animation: fadeInRight 0.7s ease forwards;
}

.animate-scale {
  animation: scaleIn 0.7s ease forwards;
}

.animate-float {
  animation: float 6s ease-in-out infinite;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* --- Stagger children --- */
.stagger-children > * {
  opacity: 0;
  transform: translateY(30px);
}

.stagger-children.visible > *:nth-child(1) { animation: fadeInUp 0.5s ease 0.0s forwards; }
.stagger-children.visible > *:nth-child(2) { animation: fadeInUp 0.5s ease 0.1s forwards; }
.stagger-children.visible > *:nth-child(3) { animation: fadeInUp 0.5s ease 0.2s forwards; }
.stagger-children.visible > *:nth-child(4) { animation: fadeInUp 0.5s ease 0.3s forwards; }
.stagger-children.visible > *:nth-child(5) { animation: fadeInUp 0.5s ease 0.4s forwards; }
.stagger-children.visible > *:nth-child(6) { animation: fadeInUp 0.5s ease 0.5s forwards; }

/* --- Page transition --- */
.page-enter {
  animation: fadeIn 0.5s ease forwards;
}

/* --- Loading shimmer for placeholder images --- */
.shimmer {
  background: linear-gradient(90deg, var(--color-gray-100) 25%, var(--color-gray-50) 50%, var(--color-gray-100) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
}