/* ==========================================================================
   ACK-arch — Core design system
   Tokens, base typography, buttons, forms, header, footer, search and modal.
   Every colour on the site comes from the tokens below, so light and dark
   appearance stay in sync automatically.
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root {
    --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;

    /* Surfaces */
    --bg: #ffffff;
    --bg-soft: #f5f5f7;
    --bg-elevated: #ffffff;
    --bg-inverse: #000000;
    --fill: rgba(0, 0, 0, 0.05);
    --fill-strong: rgba(0, 0, 0, 0.09);

    /* Text */
    --ink: #1d1d1f;
    --ink-2: #6e6e73;
    --ink-3: #86868b;
    --ink-inverse: #f5f5f7;

    /* Lines */
    --line: #d2d2d7;
    --line-soft: rgba(0, 0, 0, 0.08);

    /* Brand */
    --accent: #e50914;
    --link: #c4111b;

    /* Chrome */
    --nav-bg: rgba(251, 251, 253, 0.78);
    --nav-ink: rgba(29, 29, 31, 0.86);
    --scrim: rgba(232, 232, 237, 0.4);
    --modal-scrim: rgba(0, 0, 0, 0.38);

    /* Elevation */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 4px 14px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.04), 0 18px 44px -12px rgba(0, 0, 0, 0.16);
    --shadow-lg: 0 30px 80px -20px rgba(0, 0, 0, 0.28);

    /* Shape */
    --radius-xs: 8px;
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 28px;
    --radius-pill: 980px;

    /* Motion — Apple's standard easing curve */
    --ease: cubic-bezier(0.28, 0.11, 0.32, 1);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --dur: 0.32s;

    /* Layout */
    --nav-h: 52px;
    --nav-top: 14px;
    --nav-offset: calc(var(--nav-h) + var(--nav-top) * 2);
    --gutter: clamp(20px, 4vw, 44px);
    --container: 1200px;
    --container-wide: 1480px;
    --container-text: 780px;
    --section: clamp(88px, 11vw, 168px);

    /* Type scale */
    --fs-display: clamp(2.75rem, 1.6rem + 5.2vw, 6rem);
    --fs-h1: clamp(2.5rem, 1.7rem + 3.6vw, 4.5rem);
    --fs-h2: clamp(2rem, 1.45rem + 2.5vw, 3.5rem);
    --fs-h3: clamp(1.5rem, 1.2rem + 1.1vw, 2.125rem);
    --fs-h4: 1.3125rem;
    --fs-lead: clamp(1.1875rem, 1.05rem + 0.55vw, 1.5rem);
    --fs-body: 1.0625rem;
    --fs-small: 0.875rem;
    --fs-caption: 0.75rem;

    color-scheme: light;
}

html[data-theme="dark"] {
    --bg: #000000;
    --bg-soft: #101011;
    --bg-elevated: #1c1c1e;
    --bg-inverse: #f5f5f7;
    --fill: rgba(255, 255, 255, 0.08);
    --fill-strong: rgba(255, 255, 255, 0.14);

    --ink: #f5f5f7;
    --ink-2: #a1a1a6;
    --ink-3: #86868b;
    --ink-inverse: #1d1d1f;

    --line: #424245;
    --line-soft: rgba(255, 255, 255, 0.1);

    --accent: #ff453a;
    --link: #ff6961;

    --nav-bg: rgba(22, 22, 23, 0.78);
    --nav-ink: rgba(245, 245, 247, 0.88);
    --scrim: rgba(0, 0, 0, 0.45);
    --modal-scrim: rgba(0, 0, 0, 0.6);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 18px 44px -12px rgba(0, 0, 0, 0.7);
    --shadow-lg: 0 30px 80px -20px rgba(0, 0, 0, 0.85);

    color-scheme: dark;
}

/* Smooth cross-fade when the appearance switch is used */
html.theme-transitioning,
html.theme-transitioning *,
html.theme-transitioning *::before,
html.theme-transitioning *::after {
    transition: background-color 0.4s var(--ease), color 0.4s var(--ease), border-color 0.4s var(--ease), fill 0.4s var(--ease) !important;
}

/* ---------- 2. Reset & base ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-padding-top: calc(var(--nav-offset) + 16px);
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: var(--fs-body);
    line-height: 1.47;
    font-weight: 400;
    letter-spacing: -0.011em;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: clip;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
}

img {
    height: auto;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    font: inherit;
    color: inherit;
    letter-spacing: inherit;
}

button {
    cursor: pointer;
    background: none;
    border: 0;
    padding: 0;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0;
    font-weight: 600;
    color: var(--ink);
    text-wrap: balance;
}

p {
    margin: 0;
    text-wrap: pretty;
}

ul,
ol {
    margin: 0;
    padding: 0;
}

figure {
    margin: 0;
}

::selection {
    background: color-mix(in srgb, var(--accent) 22%, transparent);
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
}

[hidden] {
    display: none !important;
}

.screen-reader-text,
.visually-hidden {
    position: absolute !important;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 1000;
    padding: 10px 18px;
    border-radius: var(--radius-pill);
    background: var(--ink);
    color: var(--bg);
    font-size: var(--fs-small);
    font-weight: 500;
    transform: translateY(-160%);
    transition: transform var(--dur) var(--ease);
}

.skip-link:focus {
    transform: none;
}

body.menu-open,
body.search-modal-open {
    overflow: hidden;
}

/* ---------- 3. Layout ---------- */
.container {
    width: 100%;
    max-width: calc(var(--container) + var(--gutter) * 2);
    margin-inline: auto;
    padding-inline: var(--gutter);
}

.container--wide {
    max-width: calc(var(--container-wide) + var(--gutter) * 2);
}

.container--text {
    max-width: calc(var(--container-text) + var(--gutter) * 2);
}

.site-main {
    display: block;
    min-height: 60vh;
}

/* ---------- 4. Typography helpers ---------- */
.eyebrow {
    display: inline-block;
    font-size: var(--fs-small);
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: 0;
    color: var(--accent);
    margin-bottom: 12px;
}

.section-title {
    font-size: var(--fs-h2);
    line-height: 1.07;
    letter-spacing: -0.028em;
}

.section-subtitle,
.lead-text {
    font-size: var(--fs-lead);
    line-height: 1.42;
    letter-spacing: -0.016em;
    color: var(--ink-2);
}

/* ---------- 5. Buttons & links ---------- */
.btn-primary,
.btn-secondary,
.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 0 22px;
    border-radius: var(--radius-pill);
    font-size: 1rem;
    font-weight: 500;
    line-height: 1;
    letter-spacing: -0.01em;
    white-space: nowrap;
    transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease), transform 0.2s var(--ease), box-shadow var(--dur) var(--ease);
}

.btn-primary {
    background: var(--ink);
    color: var(--bg);
}

.btn-primary:hover {
    background: color-mix(in srgb, var(--ink) 82%, var(--bg));
}

.btn-secondary,
.btn-outline {
    background: var(--fill);
    color: var(--ink);
}

.btn-secondary:hover,
.btn-outline:hover {
    background: var(--fill-strong);
}

.btn-primary:active,
.btn-secondary:active,
.btn-outline:active {
    transform: scale(0.97);
}

.btn-primary:disabled {
    opacity: 0.55;
    cursor: progress;
}

.btn-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 1rem;
    font-weight: 400;
    color: var(--link);
    letter-spacing: -0.01em;
}

.btn-link::after,
.tile__link::after,
.text-link::after {
    content: "";
    width: 0.42em;
    height: 0.42em;
    border-top: 1.6px solid currentColor;
    border-right: 1.6px solid currentColor;
    transform: rotate(45deg) translateY(-1px);
    transition: transform var(--dur) var(--ease);
    flex: none;
}

.btn-link:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.btn-link:hover::after {
    transform: rotate(45deg) translate(2px, -3px);
}

/* ---------- 6. Forms ---------- */
.ack-form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.ack-form-group label {
    font-size: var(--fs-small);
    font-weight: 500;
    color: var(--ink-2);
}

.ack-form-group input,
.ack-form-group select,
.ack-form-group textarea,
.search-form .search-field,
.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
    width: 100%;
    min-height: 48px;
    padding: 12px 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    color: var(--ink);
    font-size: 1rem;
    transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.ack-form-group textarea {
    resize: vertical;
    min-height: 112px;
}

.ack-form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2386868b' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.ack-form-group input:focus,
.ack-form-group select:focus,
.ack-form-group textarea:focus,
.search-form .search-field:focus {
    outline: none;
    border-color: var(--ink-3);
    box-shadow: 0 0 0 4px var(--fill-strong);
}

.ack-hp {
    position: absolute !important;
    left: -9999px;
    width: 1px;
    height: 1px;
    opacity: 0;
}

.ack-quote-form__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.ack-form-full {
    grid-column: 1 / -1;
}

.ack-quote-form__status {
    margin-top: 18px;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    font-size: var(--fs-small);
    line-height: 1.5;
}

.ack-quote-form__status.is-success {
    background: color-mix(in srgb, #30d158 14%, transparent);
    color: var(--ink);
}

.ack-quote-form__status.is-error {
    background: color-mix(in srgb, var(--accent) 12%, transparent);
    color: var(--ink);
}

.ack-quote-form__footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px 20px;
    margin-top: 24px;
}

.ack-quote-form__note {
    font-size: var(--fs-caption);
    color: var(--ink-3);
}

.btn-spinner {
    display: inline-flex;
    align-items: center;
}

.spinner-svg {
    animation: ack-spin 0.8s linear infinite;
}

@keyframes ack-spin {
    to { transform: rotate(360deg); }
}

/* ---------- 7. Header ---------- */
/* Floating, centred pill bar */
.site-header {
    position: fixed;
    top: var(--nav-top);
    left: 0;
    right: 0;
    z-index: 100;
    width: max-content;
    max-width: calc(100% - var(--nav-top) * 2);
    height: var(--nav-h);
    margin-inline: auto;
    color: var(--nav-ink);
    background: var(--nav-bg);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-md);
    transition: background-color 0.5s var(--ease), border-color 0.5s var(--ease), color 0.5s var(--ease), box-shadow 0.5s var(--ease), opacity 0.45s var(--ease-out), transform 0.6s var(--ease-out);
}

body.admin-bar .site-header {
    top: calc(var(--wp-admin--admin-bar--height, 32px) + var(--nav-top));
}

/* Inner pages start below the floating bar */
body:not(.is-front-page) .site-main {
    padding-top: var(--nav-offset);
}

.site-header__bar {
    height: 100%;
    display: flex;
    align-items: center;
    gap: clamp(12px, 2vw, 28px);
    max-width: none;
    padding: 0 6px 0 24px;
}

.site-header__logo {
    flex: none;
    display: flex;
    align-items: center;
    height: 100%;
    margin-right: 4px;
}

.nav-logo-img {
    height: 18px;
    width: auto;
}

.nav-logo-img--light,
html[data-theme="dark"] .nav-logo-img--dark {
    display: none;
}

html[data-theme="dark"] .nav-logo-img--light {
    display: block;
}

/* Over the home film the pill turns into light glass (light studio backdrop) */
.site-header.header--in-hero:not(.is-menu-open):not(.is-flyout-open) {
    background: rgba(255, 255, 255, 0.5);
    border-color: rgba(255, 255, 255, 0.55);
    box-shadow: 0 8px 30px -12px rgba(0, 0, 0, 0.25);
    color: rgba(29, 29, 31, 0.86);
}

.site-header.header--in-hero:not(.is-menu-open):not(.is-flyout-open) .nav-logo-img--dark {
    display: block;
}

.site-header.header--in-hero:not(.is-menu-open):not(.is-flyout-open) .nav-logo-img--light {
    display: none;
}

.site-header.header--in-hero.header--on-dark:not(.is-menu-open):not(.is-flyout-open) {
    background: rgba(29, 29, 31, 0.42);
    border-color: rgba(255, 255, 255, 0.14);
    color: rgba(245, 245, 247, 0.9);
}

.site-header.header--in-hero.header--on-dark:not(.is-menu-open):not(.is-flyout-open) .nav-logo-img--dark {
    display: none;
}

.site-header.header--in-hero.header--on-dark:not(.is-menu-open):not(.is-flyout-open) .nav-logo-img--light {
    display: block;
}

/* Primary navigation (desktop) */
.primary-navigation {
    height: 100%;
}

.nav-menu {
    list-style: none;
    display: flex;
    align-items: center;
    height: 100%;
    gap: 4px;
}

.nav-menu > li {
    height: 100%;
    display: flex;
    align-items: center;
}

.menu-item-link-wrap {
    display: flex;
    align-items: center;
    height: 100%;
}

.nav-menu > li > a,
.nav-menu > li > .menu-item-link-wrap > a {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 12px;
    font-size: 0.8125rem;
    font-weight: 400;
    letter-spacing: -0.005em;
    color: inherit;
    opacity: 0.88;
    transition: opacity var(--dur) var(--ease);
}

.nav-menu > li > a:hover,
.nav-menu > li > .menu-item-link-wrap > a:hover,
.nav-menu > .current-menu-item > a,
.nav-menu > .current-menu-item > .menu-item-link-wrap > a,
.nav-menu > .current-menu-ancestor > .menu-item-link-wrap > a {
    opacity: 1;
}

.nav-menu > .current-menu-item > a,
.nav-menu > .current-menu-item > .menu-item-link-wrap > a {
    font-weight: 600;
}

.mobile-submenu-toggle {
    display: none;
}

/* Products flyout: rounded glass panel centred under the pill */
.mega-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    width: min(860px, calc(100vw - var(--nav-top) * 2));
    background: var(--nav-bg);
    -webkit-backdrop-filter: saturate(180%) blur(24px);
    backdrop-filter: saturate(180%) blur(24px);
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    color: var(--ink);
    visibility: hidden;
    opacity: 0;
    transform: translate(-50%, -8px);
    transition: opacity 0.28s var(--ease), transform 0.36s var(--ease), visibility 0s linear 0.36s;
}

/* Invisible bridge so the pointer can travel from the pill to the panel */
.mega-dropdown::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 100%;
    height: 14px;
}

.mega-dropdown__inner {
    padding: 36px 40px 40px;
    display: grid;
    grid-template-columns: 1fr minmax(220px, 280px);
    grid-template-rows: auto 1fr;
    gap: 14px 64px;
}

.mega-dropdown__heading .eyebrow {
    color: var(--ink-3);
    font-size: var(--fs-caption);
    font-weight: 400;
    margin: 0;
}

.mega-dropdown__list {
    list-style: none;
    grid-column: 1;
    columns: 2;
    column-gap: 48px;
}

.mega-dropdown__item {
    break-inside: avoid;
}

.mega-dropdown__item a {
    display: block;
    padding: 6px 0;
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: var(--ink);
    transition: color var(--dur) var(--ease);
}

.mega-dropdown__item a:hover {
    color: var(--link);
}

.mega-dropdown__footer {
    grid-column: 2;
    grid-row: 1 / span 2;
    padding-left: 32px;
    border-left: 1px solid var(--line-soft);
    align-self: start;
}

.mega-dropdown__catalog-btn {
    display: block;
    padding-top: 26px;
}

.catalog-btn__text strong {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink);
}

.catalog-btn__text strong::after {
    content: "";
    width: 0.42em;
    height: 0.42em;
    border-top: 1.6px solid currentColor;
    border-right: 1.6px solid currentColor;
    transform: rotate(45deg);
}

.catalog-btn__text small {
    display: block;
    margin-top: 4px;
    font-size: var(--fs-small);
    color: var(--ink-2);
}

@media (min-width: 1024px) {
    .menu-item-products:hover > .mega-dropdown,
    .menu-item-products:focus-within > .mega-dropdown {
        visibility: visible;
        opacity: 1;
        transform: translate(-50%, 0);
        transition: opacity 0.32s var(--ease), transform 0.4s var(--ease), visibility 0s;
    }
}

/* Dims the page while the flyout is open */
.nav-scrim {
    position: fixed;
    inset: 0;
    z-index: 90;
    background: var(--scrim);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s var(--ease), visibility 0s linear 0.3s;
}

.site-header.is-flyout-open + .nav-scrim {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s var(--ease), visibility 0s;
}

.site-header__tagline {
    display: none;
}

/* Home film (desktop): the bar waits as a vertical rail on the left and
   morphs back into the centred pill when the film ends. canvas-scroll.js
   fades it out (.is-morphing), swaps the layout, then fades it back in. */
.site-header.is-morphing {
    opacity: 0;
    transform: translateY(-14px) scale(0.96);
    transition-duration: 0.22s;
}

@media (min-width: 1024px) {
    /* Layout */
    .site-header.header--rail {
        top: 50%;
        left: 32px;
        right: auto;
        width: 212px;
        height: auto;
        margin: 0;
        border-radius: 30px;
        transform: translateY(-50%);
    }

    body.admin-bar .site-header.header--rail {
        top: calc(50% + var(--wp-admin--admin-bar--height, 32px) / 2);
    }

    .site-header.header--rail.is-morphing {
        transform: translate(-22px, -50%) scale(0.96);
    }

    /* Frosted capsule with a soft top highlight (light studio part of the film) */
    .site-header.header--rail.header--in-hero:not(.is-menu-open):not(.is-flyout-open) {
        background: linear-gradient(180deg, rgba(255, 255, 255, 0.66) 0%, rgba(255, 255, 255, 0.34) 100%);
        -webkit-backdrop-filter: saturate(180%) blur(28px);
        backdrop-filter: saturate(180%) blur(28px);
        border: 1px solid rgba(255, 255, 255, 0.6);
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85), 0 40px 70px -34px rgba(0, 0, 0, 0.42);
        --rail-line: rgba(29, 29, 31, 0.12);
        --rail-muted: rgba(29, 29, 31, 0.45);
        --rail-btn: rgba(255, 255, 255, 0.55);
    }

    /* Dark turn of the film */
    .site-header.header--rail.header--in-hero.header--on-dark:not(.is-menu-open):not(.is-flyout-open) {
        background: linear-gradient(180deg, rgba(44, 44, 46, 0.62) 0%, rgba(20, 20, 22, 0.42) 100%);
        border-color: rgba(255, 255, 255, 0.12);
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 40px 70px -34px rgba(0, 0, 0, 0.6);
        --rail-line: rgba(255, 255, 255, 0.16);
        --rail-muted: rgba(245, 245, 247, 0.5);
        --rail-btn: rgba(255, 255, 255, 0.1);
    }

    .header--rail .site-header__bar {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        height: auto;
        padding: 30px 26px 22px;
    }

    .header--rail .site-header__logo {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        height: auto;
        margin: 0 0 30px;
    }

    .header--rail .nav-logo-img {
        height: 17px;
    }

    .header--rail .site-header__tagline {
        display: block;
        font-size: 0.6875rem;
        font-weight: 500;
        letter-spacing: 0.16em;
        text-transform: uppercase;
        color: var(--rail-muted, currentColor);
    }

    /* Links with index numbers, beside a hairline that fills as the film plays */
    .header--rail .primary-navigation {
        position: relative;
        height: auto;
        padding-left: 18px;
    }

    .header--rail .primary-navigation::before,
    .header--rail .primary-navigation::after {
        content: "";
        position: absolute;
        left: 0;
        top: 4px;
        bottom: 4px;
        width: 1px;
        border-radius: 1px;
    }

    .header--rail .primary-navigation::before {
        background: var(--rail-line, rgba(0, 0, 0, 0.12));
    }

    .header--rail .primary-navigation::after {
        width: 2px;
        left: -0.5px;
        background: var(--accent);
        transform: scaleY(var(--hero-progress, 0));
        transform-origin: top;
        box-shadow: 0 0 10px color-mix(in srgb, var(--accent) 60%, transparent);
    }

    .header--rail .nav-menu,
    .header--rail .nav-menu > li,
    .header--rail .menu-item-link-wrap {
        height: auto;
    }

    .header--rail .nav-menu {
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        counter-reset: rail;
    }

    .header--rail .nav-menu > li {
        counter-increment: rail;
    }

    .header--rail .nav-menu > li > a,
    .header--rail .nav-menu > li > .menu-item-link-wrap > a {
        height: auto;
        gap: 12px;
        padding: 7px 0;
        font-size: 0.9375rem;
        font-weight: 500;
        letter-spacing: -0.012em;
        opacity: 0.92;
        transition: opacity var(--dur) var(--ease), transform 0.45s var(--ease-out);
    }

    .header--rail .nav-menu > li > a::before,
    .header--rail .nav-menu > li > .menu-item-link-wrap > a::before {
        content: counter(rail, decimal-leading-zero);
        min-width: 16px;
        font-size: 0.6875rem;
        font-weight: 500;
        font-variant-numeric: tabular-nums;
        color: var(--rail-muted, currentColor);
        transition: color var(--dur) var(--ease);
    }

    .header--rail .nav-menu > li > a:hover,
    .header--rail .nav-menu > li > .menu-item-link-wrap > a:hover {
        opacity: 1;
        transform: translateX(4px);
    }

    .header--rail .nav-menu > li > a:hover::before,
    .header--rail .nav-menu > li > .menu-item-link-wrap > a:hover::before {
        color: var(--accent);
    }

    .header--rail .mega-dropdown {
        display: none;
    }

    /* Round glass buttons under a hairline */
    .header--rail .nav-actions {
        gap: 8px;
        margin: 26px 0 0;
        padding-top: 18px;
        border-top: 1px solid var(--rail-line, rgba(0, 0, 0, 0.12));
    }

    .header--rail .nav-icon-btn {
        width: 38px;
        height: 38px;
        background: var(--rail-btn, var(--fill));
        opacity: 1;
        transition: background-color var(--dur) var(--ease), transform 0.3s var(--ease-out);
    }

    .header--rail .nav-icon-btn:hover {
        transform: translateY(-2px);
        background: var(--rail-btn, var(--fill-strong));
    }
}

/* Header actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 2px;
    margin-left: 12px;
}

.nav-icon-btn {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: inherit;
    opacity: 0.88;
    transition: opacity var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.nav-icon-btn:hover {
    opacity: 1;
    background: var(--fill);
}

.nav-theme-btn .icon-sun,
html[data-theme="dark"] .nav-theme-btn .icon-moon {
    display: none;
}

html[data-theme="dark"] .nav-theme-btn .icon-sun {
    display: block;
}

.nav-toggle {
    display: none;
    position: relative;
}

.hamburger-line {
    position: absolute;
    left: 12px;
    width: 16px;
    height: 1.5px;
    border-radius: 2px;
    background: currentColor;
    transition: transform 0.36s var(--ease), top 0.36s var(--ease);
}

.hamburger-line:nth-child(1) { top: 16px; }
.hamburger-line:nth-child(2) { top: 23px; }

.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    top: 19.5px;
    transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    top: 19.5px;
    transform: rotate(-45deg);
}

/* Mobile & tablet: full-screen menu */
@media (max-width: 1023.98px) {
    .site-header {
        width: auto;
        left: var(--nav-top);
        right: var(--nav-top);
        max-width: none;
        --nav-top: 10px;
    }

    .site-header__bar {
        gap: 8px;
        padding: 0 4px 0 18px;
    }

    .site-header__logo {
        margin-right: auto;
    }

    .site-header.is-menu-open {
        top: 0;
        left: 0;
        right: 0;
        border-radius: 0;
        box-shadow: none;
    }

    body.admin-bar .site-header.is-menu-open {
        top: var(--wp-admin--admin-bar--height, 46px);
    }

    .nav-toggle {
        display: inline-flex;
    }

    .primary-navigation {
        position: fixed;
        top: var(--nav-h);
        left: 0;
        right: 0;
        height: calc(100dvh - var(--nav-h));
        background: var(--bg);
        overflow-y: auto;
        overscroll-behavior: contain;
        visibility: hidden;
        opacity: 0;
        transition: opacity 0.3s var(--ease), visibility 0s linear 0.3s;
    }

    body.admin-bar .primary-navigation {
        top: calc(var(--nav-h) + var(--wp-admin--admin-bar--height, 46px));
    }

    .site-header.is-menu-open {
        background: var(--bg);
        border-color: transparent;
        color: var(--ink);
    }

    .site-header.is-menu-open .primary-navigation {
        visibility: visible;
        opacity: 1;
        transition: opacity 0.3s var(--ease), visibility 0s;
    }

    .nav-menu {
        flex-direction: column;
        align-items: stretch;
        height: auto;
        gap: 0;
        padding: 20px var(--gutter) 48px;
    }

    .nav-menu > li {
        display: block;
        height: auto;
        opacity: 0;
        transform: translateY(-8px);
        transition: opacity 0.4s var(--ease), transform 0.5s var(--ease);
    }

    .site-header.is-menu-open .nav-menu > li {
        opacity: 1;
        transform: none;
    }

    .site-header.is-menu-open .nav-menu > li:nth-child(2) { transition-delay: 0.04s; }
    .site-header.is-menu-open .nav-menu > li:nth-child(3) { transition-delay: 0.08s; }
    .site-header.is-menu-open .nav-menu > li:nth-child(4) { transition-delay: 0.12s; }
    .site-header.is-menu-open .nav-menu > li:nth-child(5) { transition-delay: 0.16s; }

    .menu-item-link-wrap {
        height: auto;
        justify-content: space-between;
    }

    .nav-menu > li > a,
    .nav-menu > li > .menu-item-link-wrap > a {
        height: auto;
        padding: 10px 0;
        font-size: 1.75rem;
        font-weight: 600;
        letter-spacing: -0.025em;
        color: var(--ink);
        opacity: 1;
    }

    .mobile-submenu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        border-radius: 50%;
        color: var(--ink-2);
    }

    .mobile-submenu-toggle svg {
        transition: transform var(--dur) var(--ease);
    }

    .mobile-submenu-toggle[aria-expanded="true"] svg {
        transform: rotate(180deg);
    }

    .mega-dropdown {
        position: static;
        display: none;
        visibility: visible;
        opacity: 1;
        transform: none;
        background: none;
        -webkit-backdrop-filter: none;
        backdrop-filter: none;
        border: 0;
    }

    .menu-item-products.is-open > .mega-dropdown {
        display: block;
    }

    .mega-dropdown__inner {
        display: block;
        padding: 4px 0 16px;
    }

    .mega-dropdown__heading {
        display: none;
    }

    .mega-dropdown__list {
        columns: 1;
    }

    .mega-dropdown__item a {
        font-size: 1.0625rem;
        font-weight: 500;
        padding: 9px 0;
        color: var(--ink-2);
    }

    .mega-dropdown__footer {
        padding: 12px 0 0;
        border: 0;
    }

    .mega-dropdown__catalog-btn {
        padding-top: 0;
    }

    .nav-scrim {
        display: none;
    }
}

/* ---------- 8. Search sheet ---------- */
.ack-search-overlay {
    position: fixed;
    inset: 0;
    z-index: 190;
    background: var(--scrim);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s var(--ease), visibility 0s linear 0.3s;
}

.ack-search-overlay.is-active {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s var(--ease), visibility 0s;
}

.ack-search-sheet {
    position: fixed;
    inset: 0 0 auto;
    z-index: 200;
    max-height: 86dvh;
    background: var(--bg);
    box-shadow: var(--shadow-lg);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: translateY(-100%);
    visibility: hidden;
    transition: transform 0.5s var(--ease), visibility 0s linear 0.5s;
}

.ack-search-sheet.is-active {
    transform: none;
    visibility: visible;
    transition: transform 0.5s var(--ease), visibility 0s;
}

body.admin-bar .ack-search-sheet {
    top: var(--wp-admin--admin-bar--height, 32px);
}

.ack-search-sheet__container {
    width: 100%;
    max-width: calc(var(--container-text) + var(--gutter) * 2);
    margin-inline: auto;
    padding: 28px var(--gutter) 36px;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.ack-search-sheet__bar {
    display: flex;
    align-items: center;
    gap: 12px;
}

.ack-search-input-wrap {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--line);
    padding-bottom: 10px;
}

.ack-search-icon {
    color: var(--ink-3);
    flex: none;
}

.ack-search-input {
    flex: 1;
    min-width: 0;
    border: 0;
    background: transparent;
    font-size: clamp(1.375rem, 1.1rem + 1.2vw, 2rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--ink);
    padding: 6px 0;
}

.ack-search-input::placeholder {
    color: var(--ink-3);
    font-weight: 500;
}

.ack-search-input:focus {
    outline: none;
}

.ack-search-input::-webkit-search-cancel-button {
    display: none;
}

.ack-search-clear-btn,
.ack-search-close-btn {
    flex: none;
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--ink-2);
    background: var(--fill);
    transition: background-color var(--dur) var(--ease);
}

.ack-search-clear-btn:hover,
.ack-search-close-btn:hover {
    background: var(--fill-strong);
}

.ack-search-sheet__content {
    margin-top: 22px;
    overflow-y: auto;
    min-height: 0;
}

.hint-eyebrow {
    display: block;
    font-size: var(--fs-caption);
    color: var(--ink-3);
    margin-bottom: 12px;
}

.ack-search-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.search-tag {
    padding: 8px 14px;
    border-radius: var(--radius-pill);
    background: var(--fill);
    font-size: var(--fs-small);
    color: var(--ink);
    transition: background-color var(--dur) var(--ease);
}

.search-tag:hover {
    background: var(--fill-strong);
}

.ack-search-loader {
    align-items: center;
    gap: 12px;
    color: var(--ink-2);
    font-size: var(--fs-small);
    padding: 8px 0;
}

.ack-search-spinner {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 2px solid var(--line);
    border-top-color: var(--ink);
    animation: ack-spin 0.8s linear infinite;
}

.ack-search-results {
    grid-template-columns: 1fr;
    gap: 2px;
}

.ack-search-item {
    display: grid;
    grid-template-columns: 56px 1fr auto;
    align-items: center;
    gap: 16px;
    padding: 10px 12px;
    margin-inline: -12px;
    border-radius: var(--radius-sm);
    transition: background-color var(--dur) var(--ease);
}

.ack-search-item:hover,
.ack-search-item:focus-visible {
    background: var(--fill);
}

.ack-search-item__thumb {
    width: 56px;
    height: 56px;
    object-fit: cover;
    border-radius: var(--radius-xs);
    background: var(--bg-soft);
}

.ack-search-item__cat {
    display: block;
    font-size: var(--fs-caption);
    color: var(--ink-3);
}

.ack-matched-badge {
    margin-left: 6px;
    color: var(--link);
}

.ack-search-item__title {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.ack-search-item__specs {
    display: block;
    font-size: var(--fs-small);
    color: var(--ink-2);
}

.ack-search-item__arrow {
    width: 8px;
    height: 8px;
    border-top: 1.6px solid var(--ink-3);
    border-right: 1.6px solid var(--ink-3);
    transform: rotate(45deg);
}

.ack-search-no-results p {
    color: var(--ink-2);
    margin-bottom: 12px;
}

.btn-all-products {
    color: var(--link);
}

/* ---------- 10. Footer ---------- */
.site-footer {
    background: var(--bg-soft);
    color: var(--ink-2);
    font-size: 0.8125rem;
    line-height: 1.5;
    padding: 56px 0 28px;
}

.footer-top {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px 48px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--line-soft);
}

.footer-logo__img {
    height: 18px;
    width: auto;
}

.footer-logo__img--light,
html[data-theme="dark"] .footer-logo__img--dark {
    display: none;
}

html[data-theme="dark"] .footer-logo__img--light {
    display: block;
}

.footer-statement {
    max-width: 520px;
    color: var(--ink-2);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 28px 32px;
    padding: 32px 0;
}

.footer-col__title {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 10px;
    letter-spacing: -0.005em;
}

.footer-col ul {
    list-style: none;
    display: grid;
    gap: 8px;
}

.footer-col a {
    color: var(--ink-2);
    text-align: left;
    transition: color var(--dur) var(--ease);
}

.footer-col a:hover {
    color: var(--ink);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.footer-address {
    white-space: normal;
}

.footer-group-link {
    display: inline-flex;
}

/* Transparent logo: dark lettering in light mode, white lettering in dark mode */
.footer-group-logo {
    width: 120px;
    height: auto;
}

.footer-group-logo--light,
html[data-theme="dark"] .footer-group-logo--dark {
    display: none;
}

html[data-theme="dark"] .footer-group-logo--light {
    display: block;
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px 24px;
    padding-top: 18px;
    border-top: 1px solid var(--line-soft);
    color: var(--ink-3);
    font-size: var(--fs-caption);
}

/* ---------- 11. Scroll reveal ---------- */
html.js [data-reveal],
html.js .scroll-reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.9s var(--ease), transform 1.1s var(--ease-out);
}

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

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

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ---------- 12. Responsive ---------- */
@media (max-width: 640px) {
    .ack-quote-form__grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .footer-col--group {
        grid-column: 1 / -1;
    }
}