:root {
    --epw-black: #000000;
    --epw-white: #ffffff;
    --epw-gray: #868686;
    --epw-gray-light: #f8f8f8;
    --epw-section-pad: clamp(20px, 3.5vw, 50px);
    --epw-font-sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
    --epw-font-inter: "Inter", sans-serif;
    --epw-font-serif: "Playfair Display", Georgia, serif;
    --epw-font-baskerville: "Libre Baskerville", Georgia, serif;
    --duration-fast: 0.2s;
    --duration-base: 0.35s;
    --duration-slow: 0.5s;
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

html::-webkit-scrollbar {
    display: none;
    width: 0;
    height: 0;
}

body {
    margin: 0;
    font-family: var(--epw-font-sans);
    color: var(--epw-black);
    background: var(--epw-white);
    overflow-x: hidden;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

body::-webkit-scrollbar {
    display: none;
    width: 0;
    height: 0;
}

body:not(.is-loaded) {
    overflow: hidden;
}

.epw-section-pad {
    padding-left: var(--epw-section-pad);
    padding-right: var(--epw-section-pad);
}

img {
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
}

/* Page loader */
.page-loader {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: grid;
    place-items: center;
    background: var(--epw-white);
    transition: opacity var(--duration-slow) var(--ease-out), visibility var(--duration-slow) var(--ease-out);
}

.page-loader.is-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

html.has-page-transition .page-loader {
    display: none;
}

.page-loader__inner {
    display: grid;
    gap: 1.25rem;
    justify-items: center;
}

.page-loader__logo {
    height: 4.5rem;
    width: auto;
    animation: page-loader-pulse 1.2s ease-in-out infinite;
}

.page-loader__bar {
    display: block;
    position: relative;
    width: 7.5rem;
    height: 2px;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.08);
    border-radius: 999px;
}

.page-loader__bar::after {
    content: "";
    position: absolute;
    inset-block: 0;
    left: 0;
    width: 40%;
    background: var(--epw-black);
    border-radius: inherit;
    animation: page-loader-slide 1s ease-in-out infinite;
}

@keyframes page-loader-pulse {
    0%, 100% { opacity: 0.65; transform: scale(0.98); }
    50% { opacity: 1; transform: scale(1); }
}

@keyframes page-loader-slide {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(350%); }
}

/* Back to top */
.back-to-top {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    z-index: 1020;
    display: grid;
    place-items: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 50%;
    background: var(--epw-black);
    color: var(--epw-white);
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(0.5rem);
    transition:
        opacity var(--duration-base) var(--ease-out),
        visibility var(--duration-base) var(--ease-out),
        transform var(--duration-base) var(--ease-out),
        background-color var(--duration-fast) var(--ease-out),
        box-shadow var(--duration-fast) var(--ease-out);
}

.back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: #2a2a2a;
    color: var(--epw-white);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.back-to-top:active {
    transform: translateY(-1px) scale(0.96);
}

.back-to-top:focus-visible {
    outline: 2px solid var(--epw-black);
    outline-offset: 3px;
}

.back-to-top i {
    font-size: 1.25rem;
}

/* Scroll reveal base (enhanced by GSAP) */
.js-scroll-reveal .scroll-reveal,
.js-scroll-reveal .scroll-reveal-in-view {
    will-change: transform, opacity;
}

.js-scroll-reveal .scroll-reveal-fade {
    will-change: opacity;
}

.js-scroll-reveal .scroll-reveal-in-view {
    opacity: 0;
    visibility: hidden;
}

.js-scroll-reveal .epw-home-hero [data-hero-split],
.js-scroll-reveal .epw-home-hero [data-hero-reveal] {
    opacity: 0;
    visibility: hidden;
}

@media (prefers-reduced-motion: reduce) {
    .page-loader__logo,
    .page-loader__bar::after {
        animation: none;
    }

    .page-loader,
    .page-transition,
    .back-to-top {
        transition: none;
    }
}