[data-scroll] {
    opacity: 0;
    transition: opacity 0.8s ease, transform 0.8s ease;
    will-change: opacity, transform;
}

[data-scroll="fade-up"] {
    transform: translateY(40px);
}

[data-scroll="fade-down"] {
    transform: translateY(-40px);
}

[data-scroll="fade-left"] {
    transform: translateX(40px);
}

[data-scroll="fade-right"] {
    transform: translateX(-40px);
}

[data-scroll="scale"] {
    transform: scale(0.9);
}

[data-scroll="fade-up"].is-visible,
[data-scroll="fade-down"].is-visible,
[data-scroll="fade-left"].is-visible,
[data-scroll="fade-right"].is-visible,
[data-scroll="scale"].is-visible {
    opacity: 1;
    transform: translate(0, 0) scale(1);
}

[data-scroll-delay="80"]  { transition-delay: 0.08s; }
[data-scroll-delay="100"] { transition-delay: 0.1s; }
[data-scroll-delay="150"] { transition-delay: 0.15s; }
[data-scroll-delay="160"] { transition-delay: 0.16s; }
[data-scroll-delay="200"] { transition-delay: 0.2s; }
[data-scroll-delay="240"] { transition-delay: 0.24s; }
[data-scroll-delay="300"] { transition-delay: 0.3s; }
[data-scroll-delay="320"] { transition-delay: 0.32s; }
[data-scroll-delay="400"] { transition-delay: 0.4s; }
[data-scroll-delay="480"] { transition-delay: 0.48s; }
[data-scroll-delay="500"] { transition-delay: 0.5s; }
[data-scroll-delay="560"] { transition-delay: 0.56s; }

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px var(--accent-glow); }
    50% { box-shadow: 0 0 40px var(--accent-glow); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

[data-tilt] {
    transform-style: preserve-3d;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:active::after {
    width: 300px;
    height: 300px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    [data-scroll] {
        opacity: 1;
        transform: none;
    }

    .scroll-arrow {
        animation: none;
    }
}