/* ==========================================================================
   Unique Animations for Manju Music Classes
   ========================================================================== */

/* Entrance Scroll Reveals (via Intersection Observer) */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.215, 0.61, 0.355, 1),
              transform 0.6s cubic-bezier(0.215, 0.61, 0.355, 1);
}

.reveal.reveal-left {
  transform: translateX(-30px);
}

.reveal.reveal-right {
  transform: translateX(30px);
}

.reveal.reveal-scale {
  transform: scale(0.95);
}

.reveal.active {
  opacity: 1;
  transform: translate(0) scale(1);
}

/* Stagger delay classes for child elements */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }

/* Dynamic Floating Musical Notes Particles (Created by JavaScript on Hover) */
.musical-particle {
  position: absolute;
  pointer-events: none;
  font-family: var(--font-family-headings), sans-serif;
  font-weight: bold;
  color: var(--primary-yellow);
  opacity: 0;
  z-index: 100;
  animation: floatParticle 1.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
  user-select: none;
}

@keyframes floatParticle {
  0% {
    transform: translate(0, 0) scale(0.6) rotate(0deg);
    opacity: 0;
  }
  15% {
    opacity: 0.8;
  }
  50% {
    opacity: 0.6;
  }
  100% {
    transform: translate(var(--dx), var(--dy)) scale(1.1) rotate(var(--dr));
    opacity: 0;
  }
}

/* Pulsing Accent Glow (for active items or badges) */
.pulse-accent {
  animation: pulseAccentGlow 2s infinite;
}

@keyframes pulseAccentGlow {
  0% {
    box-shadow: 0 0 0 0 rgba(234, 179, 8, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(234, 179, 8, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(234, 179, 8, 0);
  }
}

/* Floating Animation for Hero Image */
.float-element {
  animation: floatMotion 6s ease-in-out infinite;
}

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

/* Keyboard/Piano Key Press Animation Effect (for styling buttons) */
.key-press-btn {
  position: relative;
  overflow: hidden;
}

.key-press-btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--primary-yellow-light);
  transform: translateY(100%);
  transition: transform var(--transition-normal);
  z-index: -1;
}

.key-press-btn:hover::after {
  transform: translateY(0);
}

.key-press-btn:hover {
  z-index: 1;
}

/* Interactive card wiggle */
.hover-wiggle:hover {
  animation: hoverWiggle 0.4s ease;
}

@keyframes hoverWiggle {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(-1deg); }
  75% { transform: rotate(1deg); }
}

/* Mobile Nav Link Entrance animation */
.nav-menu.open .nav-link {
  animation: mobileLinkFadeIn 0.4s ease forwards;
  opacity: 0;
}

.nav-menu.open .nav-link:nth-child(1) { animation-delay: 0.1s; }
.nav-menu.open .nav-link:nth-child(2) { animation-delay: 0.15s; }
.nav-menu.open .nav-link:nth-child(3) { animation-delay: 0.2s; }
.nav-menu.open .nav-link:nth-child(4) { animation-delay: 0.25s; }
.nav-menu.open .nav-link:nth-child(5) { animation-delay: 0.3s; }
.nav-menu.open .cta-button { 
  animation: mobileLinkFadeIn 0.4s ease forwards;
  animation-delay: 0.35s;
  opacity: 0;
}

@keyframes mobileLinkFadeIn {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}