/* ============================================
   animations.css — Premium Scroll Animations
   Coresoft Website
   ============================================ */

/* --- Premium Easing Curve --- */
:root {
  --ease-premium: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ============================================
   1. ENTRANCE ANIMATIONS (Intersection Observer)
   ============================================ */

/* .fade-up — slide up into view */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-premium), transform 0.8s var(--ease-premium);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* .fade-left — slide in from left */
.fade-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.8s var(--ease-premium), transform 0.8s var(--ease-premium);
}
.fade-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* .fade-right — slide in from right */
.fade-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.8s var(--ease-premium), transform 0.8s var(--ease-premium);
}
.fade-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* .fade-scale — zoom in */
.fade-scale {
  opacity: 0;
  transform: scale(0.85);
  transition: opacity 0.8s var(--ease-premium), transform 0.8s var(--ease-premium);
}
.fade-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* ============================================
   2. IMAGE ZOOM (Gallery)
   ============================================ */

.gallery-item {
  overflow: hidden;
  border-radius: var(--radius-xl, 12px);
}
.gallery-item img {
  transition: transform 0.6s var(--ease-premium);
  will-change: transform;
}
.gallery-item:hover img {
  transform: scale(1.08);
}

/* ============================================
   3. KEYFRAMES
   ============================================ */

/* Hero floating animation */
@keyframes floatAnim {
  0%, 100% { transform: translateY(0) scale(1); }
  50%      { transform: translateY(-20px) scale(1.03); }
}

/* Hero badge pulsing dot */
@keyframes pulseDot {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.3; }
}

/* Spinner for loader */
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* WhatsApp floating pulse */
@keyframes whatsappPulse {
  0%, 100% { box-shadow: 0 4px 16px rgba(37, 211, 102, 0.25); }
  50%      { box-shadow: 0 4px 24px rgba(37, 211, 102, 0.4); }
}

/* Counter animation */
@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Premium fade-in keyframes */
@keyframes fadeInUp {
  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); }
}

/* Lightbox overlay animation */
@keyframes lightboxFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes lightboxZoom {
  from { transform: scale(0.9); }
  to   { transform: scale(1); }
}

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

/* ============================================
   4. CARD HOVER GLOW & TRANSITIONS
   ============================================ */

/* Combined card classes — hover lift + glow */
.service-card,
.training-card,
.whychoose-card,
.industry-card,
.process-step,
.stat-item,
.gallery-item,
.value-card,
.leader-card,
.achievement-card,
.methodology-card,
.course-card,
.placement-step-card,
.partner-card,
.story-card,
.internship-card,
.campus-card,
.service-detail-card {
  transition: transform 0.4s var(--ease-premium),
              box-shadow 0.4s var(--ease-premium),
              border-color 0.4s var(--ease-premium);
  will-change: transform, box-shadow;
}

.service-card:hover,
.training-card:hover,
.whychoose-card:hover,
.industry-card:hover,
.process-step:hover,
.stat-item:hover,
.gallery-item:hover,
.value-card:hover,
.leader-card:hover,
.achievement-card:hover,
.methodology-card:hover,
.course-card:hover,
.placement-step-card:hover,
.partner-card:hover,
.story-card:hover,
.internship-card:hover,
.campus-card:hover,
.service-detail-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(0, 112, 243, 0.15), 0 4px 12px rgba(0, 112, 243, 0.08);
  border-color: rgba(0, 112, 243, 0.2);
}

/* ============================================
   5. SMOOTH ELEMENT TRANSITIONS
   ============================================ */

.nav-link::after {
  transition: width 0.3s var(--ease-premium);
}

.btn {
  transition: transform 0.3s var(--ease-premium),
              box-shadow 0.3s var(--ease-premium),
              background 0.3s var(--ease-premium),
              color 0.3s var(--ease-premium),
              border-color 0.3s var(--ease-premium);
}

.btn-text i {
  transition: transform 0.3s var(--ease-premium);
}
.btn-text:hover i {
  transform: translateX(4px);
}

.service-card .service-icon {
  transition: background 0.4s var(--ease-premium),
              color 0.4s var(--ease-premium),
              transform 0.4s var(--ease-premium);
}

.whychoose-card .whychoose-icon {
  transition: transform 0.6s var(--ease-premium);
}

.testimonial-card {
  transition: opacity 0.5s var(--ease-premium),
              transform 0.5s var(--ease-premium),
              box-shadow 0.5s var(--ease-premium);
}

.footer-social a {
  transition: background 0.3s var(--ease-premium),
              color 0.3s var(--ease-premium),
              transform 0.3s var(--ease-premium);
}

.hamburger .bar {
  transition: transform 0.3s var(--ease-premium),
              opacity 0.3s var(--ease-premium);
}

.nav-menu {
  transition: right 0.4s var(--ease-premium);
}

.faq-answer {
  transition: max-height 0.3s var(--ease-premium),
              padding 0.3s var(--ease-premium);
}

.faq-toggle {
  transition: transform 0.3s var(--ease-premium);
}

.form-group input,
.form-group select,
.form-group textarea {
  transition: border-color 0.3s var(--ease-premium),
              box-shadow 0.3s var(--ease-premium);
}

.gallery-placeholder {
  transition: transform 0.4s var(--ease-premium),
              color 0.4s var(--ease-premium);
}

/* ============================================
   6. BUTTON RIPPLE EFFECT (CSS layer)
   ============================================ */

.btn-ripple {
  position: relative;
  overflow: hidden;
}
.btn-ripple::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--ripple-x, 50%) var(--ripple-y, 50%), rgba(255,255,255,0.35) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.btn-ripple:active::after {
  opacity: 1;
  transition: opacity 0s;
}

/* ============================================
   7. STAGGERED DELAY CLASSES
   ============================================ */

[data-delay="100"] { transition-delay: 0.1s; }
[data-delay="200"] { transition-delay: 0.2s; }
[data-delay="300"] { transition-delay: 0.3s; }
[data-delay="400"] { transition-delay: 0.4s; }
[data-delay="500"] { transition-delay: 0.5s; }
[data-delay="600"] { transition-delay: 0.6s; }
[data-delay="700"] { transition-delay: 0.7s; }
[data-delay="800"] { transition-delay: 0.8s; }

/* ============================================
   8. WHATSAPP FLOATING PULSE
   ============================================ */

.whatsapp-float {
  animation: whatsappPulse 2s ease-in-out infinite;
}

/* ============================================
   9. SKELETON / SHIMMER LOADING
   ============================================ */

.skeleton {
  background: linear-gradient(90deg, #e0e0e0 25%, #f0f0f0 50%, #e0e0e0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: 4px;
}

/* ============================================
   10. REDUCED MOTION
   ============================================ */

@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;
  }

  .fade-up,
  .fade-left,
  .fade-right,
  .fade-scale {
    opacity: 1;
    transform: none;
  }

  .whatsapp-float {
    animation: none;
  }

  .skeleton {
    animation: none;
    background: #e0e0e0;
  }

  .gallery-item:hover img {
    transform: none;
  }
}