/* Custom Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

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

/* Staggered Animation Items */
.stagger-item {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s cubic-bezier(0.5, 0, 0, 1);
}

.stagger-item.active {
    opacity: 1;
    transform: translateY(0);
}

/* Fallback for JS disabled */
.no-js .reveal,
.no-js .stagger-item {
    opacity: 1;
    transform: none;
}

/* --- Page Transition Overlay --- */
#page-transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #ffffff;
    z-index: 40; /* Below header (z-50) but above content */
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.dark #page-transition-overlay {
    background-color: #0a0a0a;
}

/* Note: 'is-leaving' class on body triggers the exit animation */
body.is-leaving #page-transition-overlay {
    opacity: 1;
    pointer-events: all;
}

/* --- Main Content Transition (Slide Up/Down) --- */
/* Target main element for page content animation */
main {
    /* Enter animation (on page load) */
    animation: slideUpFade 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

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

/* Exit animation (when clicking a link) */
body.is-leaving main {
    opacity: 0;
    transform: translateY(-20px);
    transition: transform 0.4s ease-in, opacity 0.4s ease-in;
}