/* ============================================
   LET'S SKILL INDIA FOUNDATION — ANIMATIONS
   ============================================ */

/* ── Keyframes ── */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.85);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.08); opacity: 0.8; }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 212, 170, 0.4); }
  50%      { box-shadow: 0 0 0 12px rgba(0, 212, 170, 0); }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40%  { transform: translateY(-10px); }
  60%  { transform: translateY(-5px); }
}

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

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

@keyframes rotate {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes typingCursor {
  0%, 100% { border-right-color: transparent; }
  50%      { border-right-color: var(--color-primary-accent); }
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

@keyframes chevronBounce {
  0%, 100% { transform: translateY(0) rotate(45deg); }
  50%      { transform: translateY(8px) rotate(45deg); }
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.6; }
  50%      { opacity: 1; }
}

@keyframes drawLine {
  from { stroke-dashoffset: 1000; }
  to   { stroke-dashoffset: 0; }
}

/* ── Scroll Reveal Classes ── */

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
  will-change: opacity, transform;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
  will-change: opacity, transform;
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
  will-change: opacity, transform;
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
  will-change: opacity, transform;
}

.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* Stagger delays for grid items */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* ── Button Ripple ── */

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

.btn .ripple-effect {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: scale(0);
  animation: ripple 0.6s linear;
  pointer-events: none;
}

/* ── Custom Cursor ── */

.custom-cursor {
  position: fixed;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary-accent);
  pointer-events: none;
  z-index: var(--z-cursor);
  transition: width 0.25s var(--ease-out),
              height 0.25s var(--ease-out),
              background 0.25s var(--ease-out),
              opacity 0.25s var(--ease-out);
  transform: translate(-50%, -50%);
  mix-blend-mode: difference;
  opacity: 0;
}

.custom-cursor.visible {
  opacity: 1;
}

.custom-cursor.expanded {
  width: 40px;
  height: 40px;
  background: rgba(0, 212, 170, 0.3);
  border: 2px solid var(--color-primary-accent);
}

/* ── Scroll Indicator ── */

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-on-dark);
  font-size: var(--text-sm);
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  opacity: 0.7;
}

.scroll-indicator__chevron {
  width: 12px;
  height: 12px;
  border-right: 2px solid var(--color-primary-accent);
  border-bottom: 2px solid var(--color-primary-accent);
  animation: chevronBounce 1.8s infinite;
}

/* ── Gradient Animation Background ── */

.animated-gradient {
  background: linear-gradient(
    135deg,
    var(--color-primary-accent),
    var(--color-electric-blue),
    var(--color-soft-lavender),
    var(--color-primary-accent)
  );
  background-size: 300% 300%;
  animation: gradientShift 8s ease infinite;
}

/* ── Floating Decorative Elements ── */

.floating-decoration {
  position: absolute;
  pointer-events: none;
  border-radius: 50%;
  opacity: 0.15;
}

.floating-decoration--1 {
  width: 200px;
  height: 200px;
  background: var(--color-primary-accent);
  top: 10%;
  right: -5%;
  animation: float 6s ease-in-out infinite;
}

.floating-decoration--2 {
  width: 120px;
  height: 120px;
  background: var(--color-electric-blue);
  bottom: 15%;
  left: -3%;
  animation: float 8s ease-in-out infinite 1s;
}

.floating-decoration--3 {
  width: 80px;
  height: 80px;
  background: var(--color-soft-lavender);
  top: 50%;
  right: 10%;
  animation: float 7s ease-in-out infinite 2s;
}

/* ── Page Transition ── */
.page-loaded .hero-content {
  animation: fadeInUp 1s var(--ease-out) forwards;
}

/* Hide elements on touch devices for custom cursor */
@media (hover: none) {
  .custom-cursor {
    display: none;
  }
}