/* =========================================================
   SHARNIR.UZ
   Global stylesheet
   ========================================================= */


/* ---------------------------------------------------------
   VARIABLES
   --------------------------------------------------------- */

:root {
    --color-green: #164B3B;
    --color-orange: #F96900;
    --color-bg: #F3F5F3;
    --color-text: #282D2B;
    --color-muted: #87958F;
    --color-white: #FFFFFF;

    --header-height: 70px;

    --container-width: 1440px;
    --container-padding: clamp(20px, 4vw, 64px);

    --transition: 0.25s ease;
}


/* ---------------------------------------------------------
   RESET
   --------------------------------------------------------- */

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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    min-height: 100dvh;

    display: flex;
    flex-direction: column;

    margin: 0;

    background: var(--color-bg);
    color: var(--color-text);

    font-family:
        Inter,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Arial,
        sans-serif;

    font-size: 16px;
    line-height: 1.5;

    -webkit-font-smoothing: antialiased;
}

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

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

button,
input,
textarea,
select {
    font: inherit;
}

button {
    cursor: pointer;
}

main {
    flex: 1 0 auto;
}


/* ---------------------------------------------------------
   GLOBAL
   --------------------------------------------------------- */

.site-container {
    width: min(100%, var(--container-width));
    margin-inline: auto;
    padding-inline: var(--container-padding);
}

.brandname {
    font-family: "Limelight", sans-serif;
}

/* =========================================================
   HEADER
   ========================================================= */

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;

    height: var(--header-height);

    background: rgba(243, 245, 243, 0.96);

    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.site-header__inner {
    width: min(100%, var(--container-width));
    height: 100%;

    margin-inline: auto;
    padding-inline: var(--container-padding);

    display: flex;
    align-items: center;
}


/* ---------------------------------------------------------
   LOGO
   --------------------------------------------------------- */

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 11px;

    flex-shrink: 0;
}

.site-brand__logo {
    width: 42px;
    height: 42px;

    object-fit: contain;
}

.site-brand__name {
    font-family: "Limelight", sans-serif;
    font-size: 25px;
    line-height: 1;
    letter-spacing: 0.01em;

    color: var(--color-green);
    white-space: nowrap;
}

.brand_font {
    font-family: "Limelight", sans-serif;
    font-weight: 500;
}


/* ---------------------------------------------------------
   NAVIGATION
   --------------------------------------------------------- */

.main-nav {
    margin-left: auto;
    height: 100%;
}

.main-nav__list {
    display: flex;
    align-items: stretch;

    height: 100%;

    margin: 0;
    padding: 0;

    list-style: none;
}

.main-nav__item {
    display: flex;
}

.main-nav__link {
    position: relative;

    display: flex;
    align-items: center;

    padding-inline: clamp(10px, 1.3vw, 22px);

    font-size: 14px;
    font-weight: 600;
    line-height: 1;
    letter-spacing: 0.015em;

    color: var(--color-text);

    transition:
        color var(--transition),
        background-color var(--transition);
}

.main-nav__link::after {
    content: "";

    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 0;

    height: 3px;

    background: var(--color-orange);

    transform: scaleX(0);
    transform-origin: center;

    transition: transform var(--transition);
}

.main-nav__link:hover,
.main-nav__link:focus-visible {
    color: var(--color-green);
}

.main-nav__link:hover::after,
.main-nav__link:focus-visible::after {
    transform: scaleX(1);
}

/* ---------------------------------------------------------
   ACTIVE MENU ITEM
   --------------------------------------------------------- */

.main-nav__item.active > .main-nav__link {
    color: var(--color-green);
}

.main-nav__item.active > .main-nav__link::after {
    transform: scaleX(1);
}


/* ---------------------------------------------------------
   PHONE
   --------------------------------------------------------- */

.header-phone {
    display: inline-flex;
    align-items: center;
    gap: 8px;

    height: 38px;

    margin-left: clamp(14px, 2vw, 30px);
    padding-inline: 14px;

    flex-shrink: 0;

    border: 1px solid var(--color-green);

    color: var(--color-green);

    font-size: 14px;
    font-weight: 700;
    line-height: 1;
    white-space: nowrap;

    transition:
        color var(--transition),
        background-color var(--transition),
        border-color var(--transition);
}

.header-phone__icon {
    width: 17px;
    height: 17px;

    flex: 0 0 17px;

    fill: currentColor;
}

.header-phone__number {
    display: block;
}

.header-phone:hover,
.header-phone:focus-visible {
    background: var(--color-green);
    color: var(--color-white);
}


/* ---------------------------------------------------------
   MOBILE BUTTON
   --------------------------------------------------------- */

.menu-toggle {
    display: none;

    width: 44px;
    height: 44px;

    margin-left: 12px;
    padding: 0;

    align-items: center;
    justify-content: center;

    background: transparent;
    border: 0;
}

.menu-toggle__inner {
    position: relative;

    width: 26px;
    height: 18px;
}

.menu-toggle__line {
    position: absolute;
    left: 0;

    width: 100%;
    height: 2px;

    background: var(--color-green);

    transition:
        transform var(--transition),
        opacity var(--transition),
        top var(--transition);
}

.menu-toggle__line:nth-child(1) {
    top: 0;
}

.menu-toggle__line:nth-child(2) {
    top: 8px;
}

.menu-toggle__line:nth-child(3) {
    top: 16px;
}

.menu-toggle.is-active .menu-toggle__line:nth-child(1) {
    top: 8px;
    transform: rotate(45deg);
}

.menu-toggle.is-active .menu-toggle__line:nth-child(2) {
    opacity: 0;
}

.menu-toggle.is-active .menu-toggle__line:nth-child(3) {
    top: 8px;
    transform: rotate(-45deg);
}


/* ---------------------------------------------------------
   BUTTONS
   --------------------------------------------------------- */

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    min-height: 52px;

    padding: 0 26px;

    border: 1px solid transparent;

    font-size: 14px;
    font-weight: 700;
    line-height: 1;

    transition:
        background-color var(--transition),
        border-color var(--transition),
        color var(--transition),
        transform var(--transition);
}

.button:hover {
    transform: translateY(-2px);
}

.button--primary {
    background: var(--color-orange);
    color: var(--color-white);
}

.button--primary:hover {
    background: #df5e00;
}

.button--secondary {
    border-color: rgba(22, 75, 59, 0.45);

    color: var(--color-green);
    background: transparent;
}

.button--secondary:hover {
    border-color: var(--color-green);
    background: var(--color-green);
    color: var(--color-white);
}


/* ---------------------------------------------------------
   SECTION EYEBROW
   --------------------------------------------------------- */

.section-eyebrow {
    display: flex;
    align-items: center;
    gap: 12px;

    margin-bottom: 18px;

    color: var(--color-green);

    font-size: 12px;
    font-weight: 700;
    line-height: 1;

    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.section-eyebrow::before {
    content: "";

    width: 32px;
    height: 3px;

    flex-shrink: 0;

    background: var(--color-orange);
}

/* =========================================================
   FIXED TECHNICAL MARK
   ========================================================= */

.site-technical-mark {
    position: fixed;
    z-index: 900;

    right: 18px;
    bottom: 24px;

    color: var(--color-muted);

    font-size: 10px;
    font-weight: 600;
    line-height: 1;
    letter-spacing: 0.14em;
    text-transform: uppercase;

    writing-mode: vertical-rl;

    pointer-events: none;
    user-select: none;

    opacity: 0.75;
}


/* =========================================================
   GLOBAL RESPONSIVE
   ========================================================= */

@media (max-width: 1180px) {

    .main-nav__link {
        padding-inline: 10px;
        font-size: 13px;
    }

    .header-phone {
        padding-inline: 12px;
        margin-left: 10px;
    }

}

@media (max-width: 980px) {

    .site-header__inner {
        position: relative;
    }

    .main-nav {
        position: absolute;
        top: var(--header-height);
        left: 0;

        width: 100%;
        height: auto;

        margin: 0;

        background: var(--color-bg);
        border-top: 1px solid rgba(135, 149, 143, 0.25);
        border-bottom: 1px solid rgba(135, 149, 143, 0.4);

        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);

        transition:
            opacity var(--transition),
            visibility var(--transition),
            transform var(--transition);
    }

    .main-nav.is-open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .main-nav__list {
        display: block;

        width: 100%;
        height: auto;

        padding: 8px var(--container-padding) 16px;
    }

    .main-nav__item {
        display: block;
    }

    .main-nav__link {
        min-height: 52px;
        padding: 0;

        border-bottom: 1px solid rgba(135, 149, 143, 0.2);

        font-size: 15px;
    }

    .main-nav__link::after {
        display: none;
    }

    .header-phone {
        margin-left: auto;
    }

    .menu-toggle {
        display: flex;
    }

    /* Mobile menu always uses dark text on light background */

    .sharnir-overlay-header .main-nav .main-nav__link {
        color: var(--color-text);
    }

    .sharnir-overlay-header .main-nav .main-nav__link:hover,
    .sharnir-overlay-header .main-nav .main-nav__link:focus-visible {
        color: var(--color-green);
    }

    .sharnir-overlay-header
    .main-nav .main-nav__item.active > .main-nav__link {
        color: var(--color-green);
    }
}

@media (max-width: 640px) {

    :root {
        --container-padding: 20px;
    }

    .site-brand__logo {
        width: 38px;
        height: 38px;
    }

    .site-brand__name {
        font-size: 21px;
    }

    .header-phone {
        height: 34px;

        margin-left: auto;
        padding-inline: 6px;

        gap: 6px;

        font-size: 12px;
    }

    .header-phone__icon {
        width: 13px;
        height: 13px;

        flex-basis: 13px;
    }

    .button {
        width: 100%;
    }

    .site-technical-mark {
        display: none;
    }
}

/* ---------------------------------------------------------
   ACCESSIBILITY
   --------------------------------------------------------- */

:focus-visible {
    outline: 3px solid rgba(249, 105, 0, 0.45);
    outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {

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

/* =========================================================
   FOOTER
   ========================================================= */

.site-footer {
    position: relative;
    overflow: hidden;
    flex-shrink: 0;

    background: var(--color-text);
    color: var(--color-white);

    margin-top: 0;
}

.site-footer::before {
    content: "";

    position: absolute;
    top: 0;
    left: 0;
    right: 0;

    height: 4px;

    background: var(--color-orange);
}

.site-footer__inner {
    width: min(100%, var(--container-width));

    margin-inline: auto;
    padding:
        clamp(55px, 7vw, 90px)
        var(--container-padding)
        24px;
}


/* ---------------------------------------------------------
   TOP
   --------------------------------------------------------- */

.site-footer__top {
    display: grid;
    grid-template-columns:
        minmax(250px, 1.5fr)
        minmax(150px, 0.75fr)
        minmax(150px, 0.75fr)
        minmax(210px, 1fr);

    gap: clamp(35px, 5vw, 80px);

    padding-bottom: clamp(45px, 6vw, 70px);
}


/* ---------------------------------------------------------
   BRAND
   --------------------------------------------------------- */

.site-footer__brand {
    max-width: 390px;
}

.site-footer__logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.site-footer__logo img {
    width: 48px;
    height: 48px;

    object-fit: contain;
}

.site-footer__brand-name {
    font-family: "Limelight", sans-serif;

    font-size: clamp(24px, 2vw, 30px);
    line-height: 1;

    color: var(--color-orange);
}

.site-footer__description {
    max-width: 360px;

    margin: 25px 0 0;

    color: rgba(255, 255, 255, 0.66);

    font-size: 14px;
    line-height: 1.7;
}


/* ---------------------------------------------------------
   COLUMNS
   --------------------------------------------------------- */

.site-footer__heading {
    position: relative;

    margin-bottom: 22px;
    padding-bottom: 12px;

    color: var(--color-white);

    font-size: 13px;
    font-weight: 700;
    line-height: 1.2;

    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.site-footer__heading::after {
    content: "";

    position: absolute;
    left: 0;
    bottom: 0;

    width: 28px;
    height: 2px;

    background: var(--color-orange);
}


/* ---------------------------------------------------------
   LINKS
   --------------------------------------------------------- */

.site-footer__links {
    margin: 0;
    padding: 0;

    list-style: none;
}

.site-footer__links li + li {
    margin-top: 12px;
}

.site-footer__links a {
    position: relative;

    display: inline-block;

    color: rgba(255, 255, 255, 0.68);

    font-size: 14px;
    line-height: 1.4;

    transition:
        color var(--transition),
        transform var(--transition);
}

.site-footer__links a:hover,
.site-footer__links a:focus-visible {
    color: var(--color-white);
    transform: translateX(3px);
}


/* ---------------------------------------------------------
   CONTACTS
   --------------------------------------------------------- */

.site-footer__contacts {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.site-footer__email,
.site-footer__phone {
    display: inline-flex;
    align-items: center;
    gap: 9px;

    color: rgba(255, 255, 255, 0.68);

    font-size: 14px;
    font-weight: 600;
    line-height: 1.2;

    transition: color var(--transition);
}

.site-footer__email {
    margin-top: 14px;
}

.site-footer__phone {
    white-space: nowrap;
}

.site-footer__email:hover,
.site-footer__email:focus-visible,
.site-footer__phone:hover,
.site-footer__phone:focus-visible {
    color: var(--color-orange);
}

.site-footer__contact-icon {
    width: 18px;
    height: 18px;

    flex: 0 0 18px;

    fill: currentColor;
}


.site-footer__address {
    display: inline-flex;
    align-items: flex-start;
    gap: 9px;

    margin-top: 14px;

    color: rgba(255, 255, 255, 0.68);

    font-size: 14px;
    font-weight: 500;
    line-height: 1.45;
}

.site-footer__address .site-footer__contact-icon {
    margin-top: 1px;
}


/* ---------------------------------------------------------
   BOTTOM
   --------------------------------------------------------- */

.site-footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: 30px;

    padding-top: 22px;

    border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.site-footer__copyright {
    color: rgba(255, 255, 255, 0.5);

    font-size: 12px;
}

.site-footer__bottom-mark {
    color: rgba(255, 255, 255, 0.36);

    font-size: 10px;
    font-weight: 600;

    letter-spacing: 0.15em;
    text-transform: uppercase;
}


/* =========================================================
   FOOTER RESPONSIVE
   ========================================================= */

@media (max-width: 980px) {

    .site-footer__top {
        grid-template-columns: 1.4fr 1fr 1fr;
    }

    .site-footer__brand {
        grid-column: 1 / -1;

        max-width: 520px;
    }

}


@media (max-width: 700px) {

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

        gap: 38px 30px;
    }

    .site-footer__brand {
        grid-column: 1 / -1;
    }

    .site-footer__contacts {
        grid-column: 1 / -1;
    }

}


@media (max-width: 480px) {

    .site-footer__inner {
        padding-top: 52px;
    }

    .site-footer__top {
        grid-template-columns: 1fr;

        gap: 36px;
    }

    .site-footer__brand,
    .site-footer__contacts {
        grid-column: auto;
    }

    .site-footer__description {
        margin-top: 20px;
    }

    .site-footer__bottom {
        align-items: flex-start;
        flex-direction: column;

        gap: 10px;
    }

}


/* =========================================================
   BREADCRUMBS — COMPACT ENGINEERING STYLE
   ========================================================= */

.breadcrumbs {
    --crumb-surface: var(--color-green);
    --crumb-line: rgba(255, 255, 255, 0.22);
    --crumb-number: rgba(255, 255, 255, 0.62);
    --crumb-label: var(--color-white);
}


/* ---------------------------------------------------------
   CONTAINER
   --------------------------------------------------------- */

.breadcrumbs .site-container {
    width: 100%;
    max-width: none;

    padding-top: 0;
    padding-right: 0;
    padding-bottom: 0;
    padding-left: 0;
}


/* ---------------------------------------------------------
   LIST
   --------------------------------------------------------- */

.breadcrumbs__list {
    counter-reset: breadcrumb;

    display: flex;
    align-items: center;

    margin: 0;
    padding: 0;

    list-style: none;

    overflow: visible;

    scrollbar-width: none;
}

.breadcrumbs__list::-webkit-scrollbar {
    display: none;
}


/* ---------------------------------------------------------
   SEGMENT
   --------------------------------------------------------- */

.breadcrumbs__item {
    counter-increment: breadcrumb;

    position: relative;

    flex: 0 0 auto;

    min-height: 26px;

    display: inline-flex;
    align-items: center;
    gap: 7px;

    padding:
        4px
        24px
        4px
        14px;

    background: var(--crumb-surface);

    border: 0;

    box-shadow:
        inset 0 1px 0 var(--crumb-line),
        inset 0 -1px 0 var(--crumb-line);

    color: var(--crumb-label);

    font-size: 12px;
    font-weight: 600;
    line-height: 1;

    white-space: nowrap;
}


/* Первый сегмент получает левую границу */

.breadcrumbs__item:first-child {
    min-width: max(
        180px,
        calc(
            (100vw - var(--container-width)) / 2
            + var(--container-padding)
            + 120px
        )
    );

    padding-left: max(
        var(--container-padding),
        calc(
            (100vw - var(--container-width)) / 2
            + var(--container-padding)
        )
    );

    padding-right: 34px;

    border-left: 0;
}


/*
   Для следующих элементов оставляем место
   под стрелку предыдущего сегмента.
*/

.breadcrumbs__item + .breadcrumbs__item {
    padding-left: 25px;
}


/* ---------------------------------------------------------
   NUMBER
   --------------------------------------------------------- */

.breadcrumbs__item::before {
    content: counter(breadcrumb, decimal-leading-zero);

    position: relative;
    z-index: 3;

    flex: 0 0 auto;

    color: var(--crumb-number);

    font-size: 9px;
    font-weight: 800;
    line-height: 1;

    letter-spacing: 0.06em;
}


/* ---------------------------------------------------------
   ARROW / ENGINEERING CHEVRON
   --------------------------------------------------------- */

.breadcrumbs__item::after {
    content: "";

    position: absolute;
    z-index: 2;

    top: 50%;
    right: -9px;

    width: 18px;
    height: 18px;

    background: var(--crumb-surface);

    border: 0;

    box-shadow:
        inset 0 1px 0 var(--crumb-line),
        inset -1px 0 0 var(--crumb-line);

    transform:
        translateY(-50%)
        rotate(45deg);

    transform-origin: center;
}


/* ---------------------------------------------------------
   TEXT / LINKS
   --------------------------------------------------------- */

.breadcrumbs__link,
.breadcrumbs__item--current > span {
    position: relative;
    z-index: 3;

    display: inline-block;

    color: inherit;

    transition: color var(--transition);
}

.breadcrumbs__link:hover,
.breadcrumbs__link:focus-visible {
    color: var(--color-orange);
}


/* ---------------------------------------------------------
   CURRENT PAGE
   --------------------------------------------------------- */

.breadcrumbs__item--current {
    --crumb-surface: var(--color-green);
    --crumb-line: var(--color-orange);
    --crumb-number: var(--color-orange);
    --crumb-label: var(--color-white);

    font-weight: 700;
}


/* =========================================================
   BREADCRUMBS OVER HERO
   ========================================================= */

/*
   Цвета сегментов задаются только в базовом блоке .breadcrumbs.
   Overlay-режим отвечает только за положение breadcrumbs.
*/

.sharnir-overlay-header .breadcrumbs {
    position: absolute;
    z-index: 900;

    top: var(--header-height);
    left: 0;
    right: 0;
}


/* =========================================================
   MOBILE
   ========================================================= */

@media (max-width: 640px) {

    .breadcrumbs .site-container {
        padding-top: 0;
        padding-bottom: 3px;
    }

    .breadcrumbs__list {
        overflow-x: auto;
        overflow-y: hidden;

        padding-top: 0px;
        padding-bottom: 1px;
    }

    .breadcrumbs__item {
        min-height: 24px;

        gap: 5px;

        padding: 0px 20px 0px 11px;

        font-size: 11px;
    }

    .breadcrumbs__item + .breadcrumbs__item {
        padding-left: 21px;
    }

    .breadcrumbs__item::before {
        font-size: 8px;
    }

    .breadcrumbs__item::after {
        right: -8px;

        width: 16px;
        height: 16px;
    }

    .breadcrumbs__item:first-child {
        min-width: 0;
        width: auto;

        padding-left: var(--container-padding);
        padding-right: 20px;
    }
}


/* =========================================================
   BREADCRUMBS — TELESCOPIC ENTRANCE
   ========================================================= */

/*
   Каждый следующий сегмент изначально смещён влево
   примерно на собственную ширину и находится
   визуально за предыдущим сегментом.

   ВАЖНО:
   clip-path здесь намеренно не используется.
   Благодаря этому вместе с сегментом двигаются:
   - верхняя рамка;
   - нижняя рамка;
   - стрелка ::after;
   - рамка стрелки.
*/

.breadcrumbs--telescopic .breadcrumbs__item {
    --crumb-delay: 0ms;
    --crumb-duration: 340ms;
    --crumb-z: 1;

    z-index: var(--crumb-z);

    opacity: 0;
    transform: translateX(-100%);

    will-change: transform, opacity;

    background-color: var(--crumb-surface);
}


/* ---------------------------------------------------------
   ANIMATION START
   --------------------------------------------------------- */

.breadcrumbs--telescopic.is-ready .breadcrumbs__item {
    animation:
        breadcrumb-telescope
        var(--crumb-duration)
        cubic-bezier(0.22, 0.61, 0.36, 1)
        var(--crumb-delay)
        both;
}


/* ---------------------------------------------------------
   TELESCOPIC MOVEMENT
   --------------------------------------------------------- */

@keyframes breadcrumb-telescope {

    0% {
        opacity: 0;
        transform: translateX(-100%);
    }

    /*
       Практически мгновенное появление непосредственно
       в момент старта собственного движения.
       Во время animation-delay элемент остаётся невидимым.
    */
    0.1% {
        opacity: 1;
        transform: translateX(-100%);
    }

    100% {
        opacity: 1;
        transform: translateX(0);
    }

}


/* ---------------------------------------------------------
   CLEANUP AFTER ANIMATION
   --------------------------------------------------------- */

.breadcrumbs--telescopic.is-complete .breadcrumbs__item {
    animation: none;

    opacity: 1;
    transform: none;
    will-change: auto;

    background-color: var(--crumb-surface);
}


/* ---------------------------------------------------------
   ACCESSIBILITY
   --------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {

    .breadcrumbs--telescopic .breadcrumbs__item {
        animation: none !important;

        transform: none;
        will-change: auto;
    }

}


/* =========================================================
   OVERLAY HEADER MODE
   Удалить класс .sharnir-overlay-header у body,
   чтобы вернуться к прежнему оформлению
   ========================================================= */


/* ---------------------------------------------------------
   HEADER OVER HERO
   --------------------------------------------------------- */

.sharnir-overlay-header .site-header {
    --header-scroll-progress: 0;
    --header-scroll-percent: 0%;

    position: fixed;
    top: 0;
    left: 0;
    right: 0;

    width: 100%;

    background: transparent;

    backdrop-filter: none;
    -webkit-backdrop-filter: none;

    isolation: isolate;
}

/* Совместимость с прежней пороговой версией JavaScript. */

.sharnir-overlay-header.is-scrolled .site-header {
    --header-scroll-progress: 1;
    --header-scroll-percent: 100%;
}

/*
 * Светлый фон, размытие и тень проявляются синхронно
 * с прокруткой от 0 до 25% высоты окна.
 */

.sharnir-overlay-header .site-header::before {
    content: "";

    position: absolute;
    inset: 0;
    z-index: 0;

    background: rgba(243, 245, 243, 0.96);

    box-shadow:
        0 1px 0 rgba(135, 149, 143, 0.18);

    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);

    opacity: var(--header-scroll-progress);

    pointer-events: none;
    will-change: opacity;
}

.sharnir-overlay-header .site-header__inner {
    position: relative;
    z-index: 1;
}


/* Логотип-картинка на тёмном Hero */

.sharnir-overlay-header .site-brand__logo {
    filter:
        brightness(var(--header-scroll-progress))
        invert(calc(1 - var(--header-scroll-progress)));

    will-change: filter;
}

/* sharnir.uz */

.sharnir-overlay-header .site-brand__name {
    color: var(--color-white);

    color: color-mix(
        in srgb,
        var(--color-white),
        var(--color-green) var(--header-scroll-percent)
    );
}


/* Меню */

.sharnir-overlay-header .main-nav__link {
    color: rgba(255, 255, 255, 0.88);

    color: color-mix(
        in srgb,
        rgba(255, 255, 255, 0.88),
        var(--color-text) var(--header-scroll-percent)
    );

    transition: none;
}

.sharnir-overlay-header .main-nav__link:hover,
.sharnir-overlay-header .main-nav__link:focus-visible {
    color: var(--color-white);

    color: color-mix(
        in srgb,
        var(--color-white),
        var(--color-green) var(--header-scroll-percent)
    );
}


/* Телефон */

.sharnir-overlay-header .header-phone {
    color: var(--color-white);

    color: color-mix(
        in srgb,
        var(--color-white),
        var(--color-green) var(--header-scroll-percent)
    );

    border-color: rgba(255, 255, 255, 0.65);

    border-color: color-mix(
        in srgb,
        rgba(255, 255, 255, 0.65),
        var(--color-green) var(--header-scroll-percent)
    );

    transition: background-color var(--transition);
}

.sharnir-overlay-header .header-phone:hover,
.sharnir-overlay-header .header-phone:focus-visible {
    color: var(--color-white);

    background: color-mix(
        in srgb,
        var(--color-orange),
        var(--color-green) var(--header-scroll-percent)
    );

    border-color: color-mix(
        in srgb,
        var(--color-orange),
        var(--color-green) var(--header-scroll-percent)
    );
}


/* Hamburger */

.sharnir-overlay-header .menu-toggle__line {
    background: var(--color-white);

    background: color-mix(
        in srgb,
        var(--color-white),
        var(--color-green) var(--header-scroll-percent)
    );

    transition:
        transform var(--transition),
        opacity var(--transition),
        top var(--transition);
}

/* ---------------------------------------------------------
   ACTIVE MENU ITEM — OVER HERO
   --------------------------------------------------------- */

@media (min-width: 981px) {
    .sharnir-overlay-header
    .main-nav__item.active > .main-nav__link {
        color: var(--color-white);

        color: color-mix(
            in srgb,
            var(--color-white),
            var(--color-green) var(--header-scroll-percent)
        );
    }

    .sharnir-overlay-header
    .main-nav__item.active > .main-nav__link::after {
        background: var(--color-orange);
        transform: scaleX(1);
    }
}


/* =========================================================
   Language switch
   ========================================================= */

.main-nav__language {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  margin-left: 18px;
}

.language-switch {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  margin: 0;
}

.language-switch__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  width: 38px;
  height: 32px;

  border: 1px solid var(--color-green);
  background-color: transparent;
  color: var(--color-green);

  font-family: inherit;
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;

  transition:
    color 0.25s ease,
    background-color 0.25s ease,
    border-color 0.25s ease;
}

.language-switch__link:first-child {
  border-radius: 3px 0 0 3px;
}

.language-switch__link:last-child {
  border-radius: 0 3px 3px 0;
}

.language-switch__link:only-child {
  border-radius: 3px;
}

.language-switch__link + .language-switch__link {
  border-left-width: 0;
}


/* Неактивный язык при наведении */

.language-switch__link:not(.is-active):hover {
  border-color: var(--color-orange);
  background-color: var(--color-orange);
  color: var(--color-white);
}


/* Активный язык на светлом фоне */

.language-switch__link.is-active {
  border-color: var(--color-orange);
  background-color: var(--color-orange);
  color: var(--color-white);

  cursor: default;
  pointer-events: none;
}

.language-switch__link:focus-visible {
  position: relative;
  z-index: 1;

  outline: 2px solid var(--color-orange);
  outline-offset: 3px;
}


/* =========================================================
   Transparent header over dark hero
   ========================================================= */

@media (min-width: 981px) {

  /*
   * Неактивный язык постепенно меняется от зелёной
   * кнопки над Hero до прозрачной кнопки в светлой шапке.
   * Активный язык при этом всегда остаётся оранжевым.
   */

  .sharnir-overlay-header
  .main-nav__language
  .language-switch__link:not(.is-active) {
    border-color: var(--color-green);

    background-color: var(--color-green);

    background-color: color-mix(
      in srgb,
      var(--color-green),
      transparent var(--header-scroll-percent)
    );

    color: var(--color-white);

    color: color-mix(
      in srgb,
      var(--color-white),
      var(--color-green) var(--header-scroll-percent)
    );

    transition: none;
  }

  .sharnir-overlay-header
  .main-nav__language
  .language-switch__link.is-active {
    border-color: var(--color-orange);
    background-color: var(--color-orange);
    color: var(--color-white);
  }

  .sharnir-overlay-header
  .main-nav__language
  .language-switch__link:not(.is-active):hover {
    border-color: var(--color-orange);
    background-color: var(--color-orange);
    color: var(--color-white);
  }

}


/* =========================================================
   Language switch — desktop
   ========================================================= */

@media (min-width: 981px) {

  .main-nav {
    display: flex;
    flex-flow: row nowrap;
    align-items: center;
  }

  .main-nav__list {
    flex: 0 1 auto;
    width: auto;
    margin: 0;
  }

  .main-nav__language {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    margin-left: 18px;
  }

}


/* =========================================================
   Language switch — mobile menu
   ========================================================= */

@media (max-width: 980px) {

  .main-nav__language {
    display: flex;
    align-items: center;
    justify-content: flex-start;

    width: 100%;
    margin-left: 0;
    padding: 18px 20px 20px;

    border-top: 1px solid rgba(22, 75, 59, 0.14);
  }

  .main-nav__language .language-switch {
    margin: 0;
  }

  .main-nav__language .language-switch__link {
    width: 36px;
    height: 32px;

    font-size: 10px;
  }

}

@media (max-width: 480px) {

  .main-nav__language {
    padding: 16px;
  }

  .main-nav__language .language-switch__link {
    width: 34px;
    height: 30px;
  }

}


/* =========================================================
   Footer language switch
   ========================================================= */

.site-footer__bottom {
  flex-wrap: nowrap;
}

.site-footer__copyright {
  flex: 0 0 auto;
  white-space: nowrap;
}

.site-footer__bottom-actions {
  display: flex;
  flex: 0 0 auto;
  flex-flow: row nowrap;
  align-items: center;
  justify-content: flex-end;
  gap: 24px;
  margin-left: auto;
}

.site-footer__language {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
}

.site-footer__language .language-switch {
  margin: 0;
}

.site-footer__bottom-mark {
  flex: 0 0 auto;
  white-space: nowrap;
}

@media (max-width: 480px) {
  .site-footer__bottom-actions {
    justify-content: space-between;
    width: 100%;
    margin-left: 0;
  }
}

/* Language switch — footer */
.site-footer__language .language-switch__link:not(.is-active) {
  border-color: rgba(255, 255, 255, 0.35);
  background-color: transparent;
  color: rgba(255, 255, 255, 0.85);
}

.site-footer__language .language-switch__link:not(.is-active):hover {
  border-color: #f96900;
  background-color: #f96900;
  color: #ffffff;
}

.site-footer__language .language-switch__link.is-active {
  border-color: #f96900;
  background-color: #f96900;
  color: #ffffff;
}