/* ================================================================
   IIEC — Shared Animation & Micro-Interaction Library
   Extracted from Next Gen Pitch Design System
   Applied across all non-core pages (blog, events, utility)
   ================================================================ */

/* ----------------------------------------------------------------
   1. Scroll-Reveal Entrance Animations
   Usage: Add class "animate-on-scroll" to any element.
          JS IntersectionObserver adds ".in-view" when visible.
   ---------------------------------------------------------------- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.animate-on-scroll.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Direction Variants */
.animate-on-scroll.from-left {
  transform: translateX(-50px);
}
.animate-on-scroll.from-left.in-view {
  transform: translateX(0);
}

.animate-on-scroll.from-right {
  transform: translateX(50px);
}
.animate-on-scroll.from-right.in-view {
  transform: translateX(0);
}

.animate-on-scroll.from-bottom {
  transform: translateY(50px);
}
.animate-on-scroll.from-bottom.in-view {
  transform: translateY(0);
}

.animate-on-scroll.scale-in {
  transform: scale(0.92);
}
.animate-on-scroll.scale-in.in-view {
  transform: scale(1);
}

.animate-on-scroll.fade-only {
  transform: none;
}
.animate-on-scroll.fade-only.in-view {
  transform: none;
}

/* Stagger Delays (add delay-1, delay-2, etc.) */
.animate-on-scroll.delay-1 { transition-delay: 0.1s; }
.animate-on-scroll.delay-2 { transition-delay: 0.2s; }
.animate-on-scroll.delay-3 { transition-delay: 0.3s; }
.animate-on-scroll.delay-4 { transition-delay: 0.4s; }
.animate-on-scroll.delay-5 { transition-delay: 0.5s; }
.animate-on-scroll.delay-6 { transition-delay: 0.6s; }

/* ----------------------------------------------------------------
   2. Enhanced Glassmorphism Cards
   Usage: Add class "ngp-glass-card" to any card/container
   ---------------------------------------------------------------- */
.ngp-glass-card {
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
  transition: transform 0.45s cubic-bezier(0.165, 0.84, 0.44, 1),
              box-shadow 0.45s cubic-bezier(0.165, 0.84, 0.44, 1),
              border-color 0.45s ease;
}

.ngp-glass-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 28px 65px rgba(0, 0, 0, 0.22);
  border-color: rgba(255, 255, 255, 0.18);
}

/* Light-theme variant for pages like startup-expo */
.ngp-glass-card-light {
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 20px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
  transition: transform 0.45s cubic-bezier(0.165, 0.84, 0.44, 1),
              box-shadow 0.45s cubic-bezier(0.165, 0.84, 0.44, 1),
              border-color 0.45s ease;
}

.ngp-glass-card-light:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 55px rgba(0, 0, 0, 0.1);
  border-color: rgba(0, 0, 0, 0.1);
}

/* ----------------------------------------------------------------
   3. Pulsing Dot Indicator
   Usage: <span class="ngp-pulse-dot"></span>
   ---------------------------------------------------------------- */
.ngp-pulse-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 0 currentColor;
  animation: ngpPulseRing 2s infinite;
  flex-shrink: 0;
}

.ngp-pulse-dot.accent {
  color: var(--color-accent, var(--accent, #ff5a1f));
}

.ngp-pulse-dot.success {
  color: var(--color-success, #10b981);
}

.ngp-pulse-dot.live {
  color: #ef4444;
}

@keyframes ngpPulseRing {
  0%   { box-shadow: 0 0 0 0 currentColor; opacity: 1; }
  70%  { box-shadow: 0 0 0 10px transparent; opacity: 0.7; }
  100% { box-shadow: 0 0 0 0 transparent; opacity: 1; }
}

/* ----------------------------------------------------------------
   4. Infinite Ticker Marquee
   Usage:
   <div class="ngp-marquee">
     <div class="ngp-marquee-track">
       <span>TEXT</span> · <span>TEXT</span> · ...
       (duplicate the content for seamless loop)
     </div>
   </div>
   ---------------------------------------------------------------- */
.ngp-marquee {
  overflow: hidden;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 17px 0;
  white-space: nowrap;
}

.ngp-marquee-track {
  display: inline-block;
  animation: ngpMarqueeMove 28s linear infinite;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  will-change: transform;
}

.ngp-marquee-track span {
  margin: 0 28px;
  color: var(--color-accent, var(--accent, #ff5a1f));
}

/* Light theme variant */
.ngp-marquee.light {
  border-top-color: rgba(0, 0, 0, 0.08);
  border-bottom-color: rgba(0, 0, 0, 0.08);
}

@keyframes ngpMarqueeMove {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ----------------------------------------------------------------
   5. 3D Tilt Card (Desktop Only)
   Usage: Add class "ngp-tilt-card" to card element.
          JS will handle mousemove tilt on desktop.
   ---------------------------------------------------------------- */
.ngp-tilt-card {
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.35s ease;
  transform-style: preserve-3d;
  will-change: transform;
}

.ngp-tilt-card:hover {
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.2);
}

/* ----------------------------------------------------------------
   6. Float Animation (Decorative)
   Usage: Add class "ngp-float" to decorative elements
   ---------------------------------------------------------------- */
.ngp-float {
  animation: ngpFloat 3s ease-in-out infinite;
}

.ngp-float.slow {
  animation-duration: 4.5s;
}

.ngp-float.fast {
  animation-duration: 2s;
}

@keyframes ngpFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

/* ----------------------------------------------------------------
   7. Section Heading Underline Accent
   Usage: <h2 class="ngp-section-heading">Title</h2>
   ---------------------------------------------------------------- */
.ngp-section-heading {
  position: relative;
  display: inline-block;
}

.ngp-section-heading::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 48px;
  height: 3px;
  border-radius: 4px;
  background: var(--color-accent, var(--accent, #ff5a1f));
  transition: width 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.ngp-section-heading.in-view::after,
.ngp-section-heading:hover::after {
  width: 80px;
}

/* Centered variant */
.ngp-section-heading.centered {
  text-align: center;
}

.ngp-section-heading.centered::after {
  left: 50%;
  transform: translateX(-50%);
}

/* ----------------------------------------------------------------
   8. Shimmer / Skeleton Loading Glow
   Usage: Add class "ngp-shimmer" for a pulsing glow effect
   ---------------------------------------------------------------- */
.ngp-shimmer {
  position: relative;
  overflow: hidden;
}

.ngp-shimmer::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.04) 50%,
    transparent 100%
  );
  background-size: 200% 100%;
  animation: ngpShimmer 2s ease-in-out infinite;
}

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

/* ----------------------------------------------------------------
   9. Gradient Text Utility
   Usage: <span class="ngp-gradient-text">Text</span>
   ---------------------------------------------------------------- */
.ngp-gradient-text {
  background: linear-gradient(135deg,
    var(--color-accent, var(--accent, #ff5a1f)) 0%,
    var(--color-accent-hover, #F7B750) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ----------------------------------------------------------------
   10. Keyframe Library (Reusable)
   ---------------------------------------------------------------- */
@keyframes ngpFadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes ngpFadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

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

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

@keyframes ngpSlideUp {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}

/* ----------------------------------------------------------------
   11. Responsive Adjustments
   ---------------------------------------------------------------- */
@media (max-width: 768px) {
  .animate-on-scroll {
    transform: translateY(25px);
  }

  .animate-on-scroll.from-left {
    transform: translateX(-25px);
  }

  .animate-on-scroll.from-right {
    transform: translateX(25px);
  }

  .ngp-glass-card,
  .ngp-glass-card-light {
    border-radius: 14px;
  }

  .ngp-marquee-track {
    font-size: 11px;
    animation-duration: 18s;
  }
}

/* ----------------------------------------------------------------
   12. Prefers Reduced Motion
   ---------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .animate-on-scroll {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .ngp-pulse-dot {
    animation: none;
  }

  .ngp-marquee-track {
    animation: none;
  }

  .ngp-float {
    animation: none;
  }

  .ngp-shimmer::after {
    animation: none;
  }
}