/* ================================
   BASE ADVANCED INTERACTIONS
   ================================ */

/* ================================
   SCROLL-BASED INTERACTIONS
   ================================ */

/* Scroll-triggered fade-in animations */
.scroll-reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* Text reveal animation */
.text-reveal {
    overflow: hidden;
    position: relative;
}

.text-reveal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-brand-accent);
    transform: translateX(-100%);
    transition: transform 0.8s ease;
}

.text-reveal.animate::before {
    transform: translateX(100%);
}

/* Image reveal with mask */
.image-reveal {
    overflow: hidden;
    position: relative;
}

.image-reveal img {
    transform: scale(1.2);
    transition: transform 1s ease;
}

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

.image-reveal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, var(--primary-brand-accent) 0%, #85ccff 100%);
    transform: translateX(-100%);
    transition: transform 0.8s ease;
    z-index: 2;
}

.image-reveal.revealed::before {
    transform: translateX(100%);
}

/* ================================
   STAGGERED ANIMATIONS
   ================================ */

.stagger-fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

.scroll-reveal-grid .stagger-fade-in:nth-child(1) { transition-delay: 0.1s; }
.scroll-reveal-grid .stagger-fade-in:nth-child(2) { transition-delay: 0.2s; }
.scroll-reveal-grid .stagger-fade-in:nth-child(3) { transition-delay: 0.3s; }
.scroll-reveal-grid .stagger-fade-in:nth-child(4) { transition-delay: 0.4s; }
.scroll-reveal-grid .stagger-fade-in:nth-child(5) { transition-delay: 0.5s; }
.scroll-reveal-grid .stagger-fade-in:nth-child(6) { transition-delay: 0.6s; }

/* ================================
   PERFORMANCE OPTIMIZATIONS
   ================================ */

@media (prefers-reduced-motion: reduce) {
    .scroll-reveal,
    .text-reveal,
    .image-reveal,
    .stagger-fade-in {
        transition: none;
        animation: none;
    }
    
    .text-reveal::before,
    .image-reveal::before {
        display: none;
    }
}

/* GPU acceleration for smooth animations */
.will-change-transform {
    will-change: transform;
}

.will-change-opacity {
    will-change: opacity;
}

.gpu-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}