/* ============================================
   LAWHA HIJABS — Animations
   Keyframes, scroll animations, hover transitions
   Apple-level subtle motion design
   ============================================ */

/* =========================================
   KEYFRAMES
   ========================================= */

/* Fade In Up */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade In */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Subtle Scale In */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Image Reveal (clip from left) */
@keyframes imageReveal {
  from {
    clip-path: inset(0 100% 0 0);
  }
  to {
    clip-path: inset(0 0 0 0);
  }
}

/* Line Expand */
@keyframes lineExpand {
  from { width: 0; }
  to { width: 60px; }
}

/* Gentle Float */
@keyframes gentleFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}


/* =========================================
   SCROLL ANIMATION CLASSES
   These classes are applied/removed by IntersectionObserver
   ========================================= */

/* Base state — hidden before scroll trigger */
.anim-fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
}

.anim-fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Fade In */
.anim-fade-in {
  opacity: 0;
  transition: opacity var(--duration-slower) var(--ease-out);
}

.anim-fade-in.is-visible {
  opacity: 1;
}

/* Scale In */
.anim-scale-in {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
}

.anim-scale-in.is-visible {
  opacity: 1;
  transform: scale(1);
}

/* Slide from left */
.anim-slide-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
}

.anim-slide-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* Slide from right */
.anim-slide-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
}

.anim-slide-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* Image Reveal (clip-path based) */
.anim-image-reveal {
  clip-path: inset(0 100% 0 0);
  transition: clip-path var(--duration-slowest) var(--ease-out);
}

.anim-image-reveal.is-visible {
  clip-path: inset(0 0 0 0);
}

/* Divider Line Expand */
.anim-line {
  width: 0;
  transition: width var(--duration-slow) var(--ease-out);
}

.anim-line.is-visible {
  width: 60px;
}


/* =========================================
   STAGGER DELAYS
   Apply to children for cascading animations
   ========================================= */
.stagger-children > *:nth-child(1) { transition-delay: 0ms; }
.stagger-children > *:nth-child(2) { transition-delay: 100ms; }
.stagger-children > *:nth-child(3) { transition-delay: 200ms; }
.stagger-children > *:nth-child(4) { transition-delay: 300ms; }
.stagger-children > *:nth-child(5) { transition-delay: 400ms; }
.stagger-children > *:nth-child(6) { transition-delay: 500ms; }
.stagger-children > *:nth-child(7) { transition-delay: 600ms; }
.stagger-children > *:nth-child(8) { transition-delay: 700ms; }
.stagger-children > *:nth-child(9) { transition-delay: 800ms; }
.stagger-children > *:nth-child(10) { transition-delay: 900ms; }
.stagger-children > *:nth-child(11) { transition-delay: 1000ms; }
.stagger-children > *:nth-child(12) { transition-delay: 1100ms; }


/* =========================================
   HOVER TRANSITIONS
   ========================================= */

/* Generic hover lift */
.hover-lift {
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Image hover zoom (container must have overflow:hidden) */
.hover-zoom {
  transition: transform var(--duration-slow) var(--ease-out);
}

.hover-zoom:hover {
  transform: scale(1.05);
}


/* =========================================
   PAGE TRANSITION
   ========================================= */
.page-transition {
  animation: fadeIn var(--duration-slow) var(--ease-out);
}