/* Base */
html {
  scroll-behavior: smooth;
}

/* Confetti canvas */
#confetti-canvas {
  width: 100%;
  height: 100%;
}

/* Balloons */
.balloons {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.balloon {
  position: absolute;
  bottom: -120px;
  width: 60px;
  height: 75px;
  border-radius: 50%;
  opacity: 0.85;
  box-shadow: inset -8px -8px 16px rgba(0, 0, 0, 0.1);
}

.balloon::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 50px;
  background: rgba(0, 0, 0, 0.2);
}

.balloon-1 {
  left: 5%;
  background: linear-gradient(135deg, #D4A574 0%, #B45309 100%);
  animation: rise 14s linear infinite;
}

.balloon-2 {
  left: 20%;
  background: linear-gradient(135deg, #FDE68A 0%, #F59E0B 100%);
  animation: rise 16s linear infinite 2s;
}

.balloon-3 {
  left: 45%;
  background: linear-gradient(135deg, #FECACA 0%, #EF4444 100%);
  animation: rise 13s linear infinite 1s;
}

.balloon-4 {
  left: 65%;
  background: linear-gradient(135deg, #BFDBFE 0%, #3B82F6 100%);
  animation: rise 15s linear infinite 3s;
}

.balloon-5 {
  left: 80%;
  background: linear-gradient(135deg, #D9F99D 0%, #84CC16 100%);
  animation: rise 17s linear infinite 4s;
}

.balloon-6 {
  left: 92%;
  background: linear-gradient(135deg, #DDD6FE 0%, #8B5CF6 100%);
  animation: rise 14s linear infinite 5s;
}

@keyframes rise {
  0% {
    transform: translateY(0) rotate(-5deg);
  }
  25% {
    transform: translateY(-30vh) rotate(5deg);
  }
  50% {
    transform: translateY(-60vh) rotate(-3deg);
  }
  75% {
    transform: translateY(-85vh) rotate(4deg);
  }
  100% {
    transform: translateY(-120vh) rotate(0deg);
  }
}

/* Sparkles */
.sparkles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
}

.sparkle {
  position: absolute;
  width: 8px;
  height: 8px;
  background: #D4A574;
  border-radius: 50%;
  box-shadow: 0 0 12px 2px rgba(212, 165, 116, 0.6);
  animation: twinkle 3s ease-in-out infinite;
}

.sparkle:nth-child(2) {
  animation-delay: 0.5s;
}

.sparkle:nth-child(3) {
  animation-delay: 1s;
}

.sparkle:nth-child(4) {
  animation-delay: 1.5s;
}

.sparkle:nth-child(5) {
  animation-delay: 2s;
}

@keyframes twinkle {
  0%, 100% {
    opacity: 0.3;
    transform: scale(0.7);
  }
  50% {
    opacity: 1;
    transform: scale(1.3);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .balloon,
  .sparkle {
    animation: none;
    opacity: 0.3;
  }

  .scroll-hint svg {
    animation: none;
  }

  #confetti-canvas {
    display: none;
  }
}

/* Hide elements before GSAP animates them in */
.hero-subtitle,
.hero-digit,
.hero-title,
.hero-message,
.hero-cta,
#wish-message,
.intro-card,
.gallery-title,
.gallery-subtitle,
.gallery-item,
.wishes-title,
.wish-card,
.footer-title,
.footer-text,
#celebrate-again {
  opacity: 1; /* base state; GSAP will handle animation */
}

/* Mobile tweaks */
@media (max-width: 640px) {
  .balloon {
    width: 36px;
    height: 45px;
  }

  .balloon::after {
    height: 30px;
    bottom: -25px;
  }
}