:root {
    --re-header-bg: rgba(9, 6, 14, 0.78);
    --re-header-text: #f5f1f8;
    --re-header-accent: #d8ff29;
    --re-mobile-menu-bg: #180a22;
}

/* =========================================================
   HEADER BASE
   ВАЖНО: position:absolute, а НЕ fixed.
   Поэтому шапка лежит поверх первого экрана, но при скролле
   уезжает вверх и не тянется за пользователем по всей странице.
   ========================================================= */

.re-header {
    position: absolute !important;
    z-index: 10000 !important;

    top: 0;
    left: 0;

    width: 100%;

    background: var(--re-header-bg);

    -webkit-backdrop-filter: blur(5px);
    backdrop-filter: blur(5px);

    border-bottom: 1px solid rgba(255, 255, 255, 0.16);

    box-sizing: border-box;

    font-family: 'Gilroy', Arial, sans-serif;
}

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

.re-header__inner {
    width: 100%;
    height: 100%;

    margin: 0 auto;

    display: flex;
    align-items: center;

    position: relative;
}

/* =========================================================
   LOGO
   Вектор из SVG, который был прислан из Figma.
   Никаких внешних картинок.
   ========================================================= */

.re-header__logo {
    display: flex;
    align-items: center;

    flex: 0 0 auto;

    line-height: 0;
    text-decoration: none;
}

.re-header__logo-svg {
    display: block;
    overflow: visible;
}

/* =========================================================
   DESKTOP + TABLET LANDSCAPE
   Tilda: 960px и выше
   ========================================================= */

@media screen and (min-width: 960px) {

    .re-header {
        height: 88px;
    }

    .re-header__inner {
        padding:
            0
            clamp(54px, 5.625vw, 108px);
    }

    .re-header__logo-svg {
        width: clamp(45px, 3.073vw, 59px);
        height: auto;
    }

    .re-header__desktop-nav {
        position: absolute;

        left: 50%;
        top: 50%;

        transform: translate(-50%, -50%);

        display: flex;
        align-items: center;

        gap: clamp(14px, 2.35vw, 45px);

        white-space: nowrap;
    }

    .re-header__desktop-nav a {
        display: inline-flex;
        align-items: center;

        padding: 8px 0;

        color: rgba(245, 241, 248, 0.50);

        font-family: inherit;
        font-size: clamp(7.5px, 0.547vw, 10.5px);
        font-weight: 400;
        line-height: 1;

        letter-spacing: 0.01em;

        text-decoration: none;
        text-transform: uppercase;

        transition:
            color 160ms ease,
            opacity 160ms ease;
    }

    .re-header__desktop-nav a:hover,
    .re-header__desktop-nav a:focus-visible {
        color: #ffffff;
    }

    .re-header__cooperation--desktop {
        margin-left: auto;

        width: clamp(130px, 9.167vw, 176px);
        height: clamp(34px, 2.135vw, 41px);

        padding: 0 12px;

        display: inline-flex;
        align-items: center;
        justify-content: center;

        border: 0;
        border-radius: 0;

        background: var(--re-header-accent);
        color: #09060e;

        font-family: inherit;
        font-size: clamp(7px, 0.47vw, 9px);
        font-weight: 700;
        line-height: 1;

        letter-spacing: 0.01em;

        text-transform: uppercase;

        cursor: pointer;

        transition:
            transform 160ms ease,
            filter 160ms ease;
    }

    .re-header__cooperation--desktop:hover {
        filter: brightness(1.04);
    }

    .re-header__cooperation--desktop:active {
        transform: translateY(1px);
    }

    .re-header__burger {
        display: none;
    }

    .re-mobile-menu,
    .re-mobile-overlay {
        display: none !important;
        font-family: 'Gilroy', Arial, sans-serif;
    }
}

/*
На самой нижней части desktop-диапазона (960px)
слегка ужимаем меню, чтобы шесть пунктов + CTA не дрались
за последние пиксели пространства.
*/
@media screen and (min-width: 960px) and (max-width: 1199px) {

    .re-header__inner {
        padding-left: 40px;
        padding-right: 40px;
    }

    .re-header__desktop-nav {
        gap: 13px;
    }

    .re-header__desktop-nav a {
        font-size: 7px;
    }

    .re-header__cooperation--desktop {
        width: 125px;
        height: 34px;
        font-size: 6.8px;
    }

    .re-header__logo-svg {
        width: 43px;
    }
}

/* =========================================================
   MOBILE + MOBILE LANDSCAPE + TABLET PORTRAIT
   Tilda: всё, что меньше 960px
   ========================================================= */

@media screen and (max-width: 959.98px) {

    .re-header {
        /*
        Исходный mobile SVG был 768x88.
        По мобильному макету это фактически 2x-размер,
        поэтому рабочая CSS-высота здесь 44px.
        */
        height: 44px;
    }

    .re-header__inner {
        padding:
            0
            clamp(20px, 7.5vw, 27px);
    }

    .re-header__logo-svg {
        width: clamp(29.5px, 8.2vw, 39px);
        height: auto;
    }

    .re-header__desktop-nav,
    .re-header__cooperation--desktop {
        display: none;
    }

    /* ---------- Burger ---------- */

    .re-header__burger {
        margin-left: auto;

        width: 20px;
        height: 22px;

        padding: 0;

        display: flex;
        flex-direction: column;
        align-items: stretch;
        justify-content: center;

        gap: 2.5px;

        border: 0;
        background: transparent;

        cursor: pointer;
    }

    .re-header__burger-line {
        display: block;

        width: 100%;
        height: 2px;

        border-radius: 1px;

        background: var(--re-header-accent);
    }

    /* ---------- Overlay ---------- */

    .re-mobile-overlay {
        position: fixed;
        z-index: 10001;

        inset: 0;

        background: rgba(0, 0, 0, 0.76);

        -webkit-backdrop-filter: blur(2px);
        backdrop-filter: blur(2px);

        opacity: 0;
        visibility: hidden;
        pointer-events: none;

        transition:
            opacity 240ms ease,
            visibility 240ms ease;
    }

    .re-mobile-overlay.is-open {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }

    /* ---------- Drawer ---------- */

    .re-mobile-menu {
        position: fixed;
        z-index: 10002;

        top: 0;
        right: 0;

        width: clamp(156px, 43.5vw, 420px);
        height: 100dvh;

        padding:
            62px
            clamp(20px, 6vw, 42px)
            32px;

        background:
            radial-gradient(
                circle at 100% 20%,
                rgba(103, 44, 144, 0.30),
                transparent 50%
            ),
            radial-gradient(
                circle at 35% 85%,
                rgba(82, 27, 115, 0.22),
                transparent 52%
            ),
            var(--re-mobile-menu-bg);

        border-left: 1px solid rgba(255,255,255,0.07);

        transform: translateX(101%);
        visibility: hidden;

        overflow-y: auto;

        transition:
            transform 320ms cubic-bezier(.22,.61,.36,1),
            visibility 320ms;
    }

    .re-mobile-menu.is-open {
        transform: translateX(0);
        visibility: visible;
    }

    /* ---------- Close ---------- */

    .re-mobile-menu__close {
        position: absolute;

        top: 25px;
        right: clamp(20px, 6vw, 28px);

        width: 18px;
        height: 18px;

        padding: 0;

        border: 0;
        background: transparent;

        cursor: pointer;
    }

    .re-mobile-menu__close::before,
    .re-mobile-menu__close::after {
        content: "";

        position: absolute;

        top: 8px;
        left: 0;

        width: 19px;
        height: 2px;

        border-radius: 1px;

        background: var(--re-header-accent);
    }

    .re-mobile-menu__close::before {
        transform: rotate(45deg);
    }

    .re-mobile-menu__close::after {
        transform: rotate(-45deg);
    }

    /* ---------- Mobile navigation ---------- */

    .re-mobile-menu__nav {
        display: flex;
        flex-direction: column;
        align-items: flex-end;

        gap: 24px;
    }

    .re-mobile-menu__nav a {
        color: rgba(245, 241, 248, 0.46);

        font-family: inherit;
        font-size: clamp(6.5px, 1.25vw, 9px);
        font-weight: 400;
        line-height: 1;

        letter-spacing: 0.015em;

        text-align: right;
        text-decoration: none;
        text-transform: uppercase;

        transition: color 160ms ease;
    }

    .re-mobile-menu__nav a:hover,
    .re-mobile-menu__nav a:focus-visible {
        color: #ffffff;
    }

    /* ---------- Mobile cooperation ---------- */

    .re-mobile-menu__cooperation {
        margin-top: 30px;
        margin-left: auto;

        min-width: 82px;
        height: 20px;

        padding: 0 8px;

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

        border: 0;
        border-radius: 0;

        background: var(--re-header-accent);
        color: #09060e;

        font-family: inherit;
        font-size: 5.5px;
        font-weight: 700;
        line-height: 1;

        letter-spacing: 0.01em;

        text-transform: uppercase;

        cursor: pointer;
    }
}

/* =========================================================
   COMMON BEHAVIOR
   ========================================================= */

body.re-mobile-menu-open {
    overflow: hidden !important;
}

@media (prefers-reduced-motion: reduce) {
    .re-header *,
    .re-header *::before,
    .re-header *::after {
        transition: none !important;
    }
}