/* Scroll Reveal Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered Delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }

/* Background Breathing / Very Slow Parallax base */
@keyframes subtleBreath {
    0% { transform: scale(1); }
    50% { transform: scale(1.03); }
    100% { transform: scale(1); }
}

.parallax-bg .bg-image {
    animation: subtleBreath 30s infinite ease-in-out alternate;
}

/* Particle System Styles */
#particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 9999; /* overlay particles everywhere safely */
    overflow: hidden;
}

.particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(231, 194, 138, 0.6);
    box-shadow: 0 0 10px rgba(231, 194, 138, 0.4);
    opacity: 0;
    animation: floatUp linear infinite;
}

@keyframes floatUp {
    0% {
        transform: translateY(100vh) scale(0.5);
        opacity: 0;
    }
    20% {
        opacity: 0.6;
    }
    80% {
        opacity: 0.6;
    }
    100% {
        transform: translateY(-10vh) scale(1.2);
        opacity: 0;
    }
}