/* ============================================
   Keyframe Animations & Micro-interactions
   ============================================ */

/* === Core Keyframes === */

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes menuSlideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse-ring {
  0% { transform: scale(0.9); opacity: 0.6; }
  100% { transform: scale(1.3); opacity: 0; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}


/* === Initial state for GSAP scroll reveals === */

.reveal {
  opacity: 0;
  transform: translateY(24px);
}


/* === Button Micro-interactions === */

.btn {
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.2) 50%, transparent 70%);
  background-size: 200% 100%;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.btn:hover::after {
  opacity: 1;
  animation: shimmer 0.8s ease-out;
}

.btn-primary {
  background-size: 200% 100%;
  background-image: linear-gradient(120deg, var(--color-primary-600) 0%, var(--color-primary-500) 50%, var(--color-primary-600) 100%);
  transition: all var(--dur-hover) var(--ease-hover),
              background-position 0.4s ease;
}

.btn-primary:hover {
  background-position: 100% 0;
}


/* === Card Hover Effects === */

.card,
.card-flat {
  transition: border-color 0.3s var(--ease-hover),
              box-shadow 0.3s var(--ease-hover),
              transform 0.3s var(--ease-hover);
}

.card:hover,
.card-flat:hover {
  transform: translateY(-4px);
}

/* Icon lift on card hover */
.diff-card:hover .diff-icon,
.feature-card:hover .feature-card-icon,
.problem-card:hover .problem-card-icon,
.about-principle:hover .about-principle-icon {
  transform: translateY(-2px) scale(1.1);
  transition: transform 0.3s var(--ease-reveal);
}

.diff-icon,
.feature-card-icon,
.problem-card-icon,
.about-principle-icon {
  transition: transform 0.3s var(--ease-hover);
}


/* === Product Card Hover Polish === */

.product-card {
  transition: border-color 0.3s ease,
              box-shadow 0.3s ease,
              transform 0.4s var(--ease-reveal);
}

.product-card:hover {
  transform: translateY(-6px);
}

.product-card .product-icon-wrap {
  transition: transform 0.4s var(--ease-reveal), box-shadow 0.3s ease;
}

.product-card:hover .product-icon-wrap {
  transform: scale(1.1) rotate(-3deg);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.product-card .product-link span {
  display: inline-block;
  transition: transform 0.3s var(--ease-reveal);
}

.product-card:hover .product-link span {
  transform: translateX(4px);
}


/* === Step Number Pulse === */

.step-number {
  position: relative;
}

.step-card:hover .step-number {
  animation: none;
  transform: scale(1.1);
  transition: transform 0.3s var(--ease-reveal);
}


/* === Process Number Glow === */

.process-number {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.process-card:hover .process-number {
  transform: scale(1.12);
  box-shadow: 0 0 20px rgba(2, 132, 199, 0.3);
}


/* === Trust Badge Hover === */

.trust-badge {
  transition: transform 0.3s var(--ease-reveal), box-shadow 0.3s ease;
}

.trust-badge:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.15);
}


/* === FAQ Open/Close Animation === */

.faq-answer {
  overflow: hidden;
}

.faq-item {
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
}

.faq-item:hover {
  transform: translateX(4px);
}

.faq-item[open] {
  box-shadow: 0 4px 16px rgba(2, 132, 199, 0.08);
}

.faq-question::after {
  transition: transform 0.3s var(--ease-reveal);
}

.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
}


/* === Scroll Progress Bar: gradient === */

.scroll-progress {
  background: linear-gradient(90deg, var(--color-primary-500), var(--color-accent-500), var(--color-primary-500));
  background-size: 200% 100%;
  animation: gradient-shift 3s ease infinite;
}


/* === Mockup Stat Shimmer on Hover === */

.hero-mockup {
  transition: transform 0.4s var(--ease-reveal), box-shadow 0.4s ease;
}

.hero-mockup:hover {
  box-shadow: 0 20px 40px rgba(2, 132, 199, 0.15), var(--shadow-lg);
}

.mockup-stat-number {
  transition: color 0.3s ease, transform 0.3s ease;
}

.mockup-stat:hover .mockup-stat-number {
  transform: scale(1.05);
  color: var(--color-primary-500);
}


/* === Nav Link Underline Animation === */

.nav-links > a:not(.btn):not(.nav-dropdown-trigger)::after,
.nav-dropdown-trigger::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-primary-500);
  border-radius: 1px;
  transition: width 0.3s var(--ease-reveal), left 0.3s var(--ease-reveal);
}

.nav-links > a:not(.btn) {
  position: relative;
}

.nav-dropdown-trigger {
  position: relative;
}

.nav-links > a:not(.btn):hover::after,
.nav-links > a:not(.btn).is-active::after,
.nav-dropdown-trigger:hover::after {
  width: 100%;
  left: 0;
}


/* === Pricing Card Hover === */

.pricing-card {
  transition: transform 0.4s var(--ease-reveal),
              box-shadow 0.4s ease,
              border-color 0.3s ease;
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.pricing-card-popular {
  transform: scale(1.02);
}

.pricing-card-popular:hover {
  transform: scale(1.02) translateY(-8px);
}


/* === Comparison Table Row Hover === */

.comparison-table tbody tr {
  transition: background 0.2s ease;
}

.comparison-table tbody tr:hover {
  background: var(--color-primary-50);
}

.comparison-table tbody tr:hover td.text-green {
  transform: scale(1.02);
  transition: transform 0.2s ease;
}


/* === Benefit Item Hover === */

.benefit-item {
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s var(--ease-reveal);
}

.benefit-item:hover {
  border-color: var(--color-primary-500);
  box-shadow: 0 4px 16px rgba(2, 132, 199, 0.08);
  transform: translateX(4px);
}

.benefit-item:hover .benefit-icon {
  transform: scale(1.15);
  transition: transform 0.3s var(--ease-reveal);
}


/* === Contact Sidebar Card Hover === */

.contact-card {
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s var(--ease-reveal);
}

.contact-card:hover {
  border-color: var(--color-primary-500);
  box-shadow: 0 8px 24px rgba(2, 132, 199, 0.08);
  transform: translateY(-4px);
}

.contact-card:hover .contact-card-icon {
  transform: scale(1.1);
  transition: transform 0.3s var(--ease-reveal);
}


/* === Footer Link Hover === */

.footer-links a {
  position: relative;
}

.footer-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-primary-500);
  transition: width 0.3s var(--ease-reveal);
}

.footer-links a:hover::after {
  width: 100%;
}


/* === Trust Row Item Float on Hover === */

.trust-item {
  transition: transform 0.3s var(--ease-reveal);
}

.trust-item:hover {
  transform: translateY(-4px);
}

.trust-item:hover .trust-item-icon {
  animation: float 2s ease-in-out infinite;
}


/* === Partner Card === */

.about-partner-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.about-partner-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary-500);
  box-shadow: 0 8px 30px rgba(2, 132, 199, 0.1);
}


/* === 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;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  body.is-loading {
    opacity: 1;
  }

  .scroll-progress {
    display: none;
  }

  .btn::after {
    display: none;
  }
}