:root {
    --motion-instant: 100ms;
    --motion-fast: 160ms;
    --motion-normal: 240ms;
    --motion-slow: 420ms;

    --ease-standard: cubic-bezier(0.2, 0, 0, 1);
    --ease-emphasized: cubic-bezier(0.2, 0.8, 0.2, 1);
    --ease-enter: cubic-bezier(0, 0, 0.2, 1);
    --ease-exit: cubic-bezier(0.4, 0, 1, 1);

    --translate-xs: 4px;
    --translate-sm: 8px;
    --translate-md: 16px;

    --scale-press: 0.98;
    --scale-hover: 1.015;
}

.js [data-reveal] {
    opacity: 0;
    transition:
        opacity var(--motion-slow) var(--ease-enter),
        transform var(--motion-slow) var(--ease-enter);
    transition-delay: var(--reveal-delay, 0ms);
}

.js [data-reveal="up"] {
    transform: translateY(14px);
}

.js [data-reveal="fade"] {
    transform: none;
}

.js [data-reveal="left"] {
    transform: translateX(-18px);
}

.js [data-reveal="right"] {
    transform: translateX(18px);
}

.js [data-reveal="scale"] {
    transform: scale(0.975);
}

.js [data-reveal].is-visible {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    .js [data-reveal] {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }

    html {
        scroll-behavior: auto;
    }

    .animate-pulse,
    .animate-spin,
    .animate-bounce {
        animation: none !important;
    }
}

@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

.header.is-scrolled {
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 8px 26px rgba(15, 61, 50, 0.08);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

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