/* ==========================================================================
   SMILE AND SKIN CO. — REFINED MOTION & SCROLL REVEAL SYSTEM
   Ultra-smooth, slow, premium healthcare motion with ease-out cubic-bezier(0.16, 1, 0.3, 1).
   ========================================================================== */

:root {
  --ease-smooth: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-reveal: 0.95s;
  --duration-heading: 0.85s;
  --duration-card: 0.90s;
  --duration-image: 1.05s;
}

/* Keyframe Definitions */
@keyframes heroFadeUp {
  0% {
    opacity: 0;
    transform: translateY(16px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroMediaFade {
  0% {
    opacity: 0;
    transform: scale(0.99) translateY(12px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

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

/* Hero Entrance Transitions */
.hero-content .hero-badge {
  animation: heroFadeUp 0.75s var(--ease-smooth) 0ms both;
}

.hero-content .hero-title {
  animation: heroFadeUp 0.90s var(--ease-smooth) 100ms both;
}

.hero-content .hero-desc {
  animation: heroFadeUp 0.90s var(--ease-smooth) 190ms both;
}

.hero-content .hero-ctas {
  animation: heroFadeUp 0.85s var(--ease-smooth) 280ms both;
}

.hero-content .hero-trust-mini {
  animation: heroFadeUp 0.85s var(--ease-smooth) 350ms both;
}

.hero-media-wrap {
  animation: heroMediaFade 1.05s var(--ease-smooth) 200ms both;
}

/* Scroll Reveal Classes (Triggered by IntersectionObserver) */
.reveal-on-scroll,
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-reveal) var(--ease-smooth),
              transform var(--duration-reveal) var(--ease-smooth);
  will-change: opacity, transform;
}

.reveal-on-scroll.is-revealed,
.reveal-on-scroll.is-visible,
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Section Headings Reveal */
.reveal-heading {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--duration-heading) var(--ease-smooth),
              transform var(--duration-heading) var(--ease-smooth);
  will-change: opacity, transform;
}

.reveal-heading.is-revealed,
.reveal-heading.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Cards & Grid Items Reveal */
.card-treatment.reveal-on-scroll,
.card-service.reveal-on-scroll,
.card-doctor.reveal-on-scroll,
.card-review.reveal-on-scroll,
.card-blog.reveal-on-scroll,
.card-result-item.reveal-on-scroll {
  transition: opacity var(--duration-card) var(--ease-smooth),
              transform var(--duration-card) var(--ease-smooth);
}

/* Subtle Card & Item Staggers */
.reveal-delay-1 {
  transition-delay: 110ms;
}

.reveal-delay-2 {
  transition-delay: 220ms;
}

.reveal-delay-3 {
  transition-delay: 330ms;
}

.reveal-delay-4 {
  transition-delay: 440ms;
}

/* Large Image Reveal Motion */
.reveal-image {
  opacity: 0;
  transform: scale(0.99) translateY(12px);
  transition: opacity var(--duration-image) var(--ease-smooth),
              transform var(--duration-image) var(--ease-smooth);
  will-change: opacity, transform;
}

.reveal-image.is-revealed,
.reveal-image.is-visible {
  opacity: 1;
  transform: scale(1) translateY(0);
}

/* Refined Hover Interactions */
.card-treatment,
.card-service,
.card-doctor,
.card-review,
.card-blog {
  transition: transform var(--transition-base),
              box-shadow var(--transition-base),
              border-color var(--transition-fast);
}

.card-treatment:hover,
.card-service:hover,
.card-doctor:hover,
.card-review:hover,
.card-blog:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(107, 23, 50, 0.08);
}

/* Mobile Motion Scaling */
@media (max-width: 767px) {
  @keyframes heroFadeUp {
    0% {
      opacity: 0;
      transform: translateY(12px);
    }
    100% {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .reveal-on-scroll,
  .reveal {
    transform: translateY(12px);
  }

  .reveal-heading {
    transform: translateY(10px);
  }

  .reveal-image {
    transform: scale(0.99) translateY(8px);
  }
}

/* Prefers-reduced-motion for complete accessibility */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .reveal-on-scroll,
  .reveal,
  .reveal-heading,
  .reveal-image {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  
  .hero-floating-card {
    animation: none !important;
  }
}