header {
    padding-top: 10px;
    position: fixed;
    z-index: 2000;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.818);
}

.header-logo {
    height: 54px;
    width: 54px;
    border-radius: 100%;
    margin-bottom: 10px;
}

.header-logo img {
    width: 100%;
    border-radius: 100%;
}

.header-nav__items.row {
    gap: 32px;

}


.header-nav__items a {
    position: relative;
    text-decoration: none;
    color: var(--white);
    font-size: 18px;
    font-weight: 400;
    padding: 0px 0px 10px 0px;
    display: inline-block;
    transition: color 0.4s ease;
}


.header-nav__items a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: currentColor;
    transition: width 0.4s ease;
}

.header-nav__items a:hover::after {
    width: 100%;
}


.header-nav__items a:hover {
    color: var(--button-color);
}

.header-nav__items button {
    padding: 0 5px;
    height: 54px;
    font-size: 18px;
    font-weight: 300;
    text-align: center;
    background: var(--button-color);
    color: var(--white);
    border: none;
    transition: all 0.3s;
    cursor: pointer;
    margin-bottom: 10px;
}

.header-nav__items button:hover {
    background: var(--white);
    color: var(--button-color);
}



/* ===== БУРГЕР МЕНЮ ===== */
@media all and (max-width: 650px) {
    .header-elements.row {
        justify-content: space-between;
        align-items: center;
    }

    .header-nav {
        position: relative;
    }

    /* Само меню с плавной анимацией */
    .header-nav__items.row {
        display: flex;
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background: rgba(0, 0, 0, 0.937);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 40px;
        z-index: 999;
        padding: 80px 20px;
        transition: right 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55);
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    }

    .header-nav__items.row.active {
        right: 0;
    }

    /* Анимация элементов меню */
    .header-nav__items a,
    .header-nav__items button {
        opacity: 0;
        transform: translateX(30px);
        transition: opacity 0.4s ease, transform 0.4s ease;
    }

    .header-nav__items.active a,
    .header-nav__items.active button {
        opacity: 1;
        transform: translateX(0);
    }

    /* Задержка для каждого элемента */
    .header-nav__items.active a:nth-child(1) {
        transition-delay: 0.1s;
    }

    .header-nav__items.active a:nth-child(2) {
        transition-delay: 0.2s;
    }

    .header-nav__items.active a:nth-child(3) {
        transition-delay: 0.3s;
    }

    .header-nav__items.active a:nth-child(4) {
        transition-delay: 0.4s;
    }

    .header-nav__items.active button {
        transition-delay: 0.5s;
    }

    .header-nav__items a {
        font-size: 24px;
        padding: 10px 0;
    }

    .header-nav__items button {
        margin-top: 20px;
        height: 56px;
        padding: 0 30px;
        font-size: 20px;
    }

    /* Кнопка бургера */
    .burger-btn {
        display: block;
        width: 30px;
        height: 24px;
        position: relative;
        z-index: 1000;
        background: none;
        border: none;
        cursor: pointer;
        padding: 0;
    }

    .burger-btn span {
        display: block;
        position: absolute;
        height: 3px;
        width: 100%;
        background: var(--button-color);
        border-radius: 3px;
        transition: all 0.3s ease;
    }

    .burger-btn span:nth-child(1) {
        top: 0;
    }

    .burger-btn span:nth-child(2) {
        top: 50%;
        transform: translateY(-50%);
    }

    .burger-btn span:nth-child(3) {
        bottom: 0;
    }

    /* Анимация бургера при открытии */
    .burger-btn.active span:nth-child(1) {
        transform: rotate(45deg);
        top: 50%;
    }

    .burger-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .burger-btn.active span:nth-child(3) {
        transform: rotate(-45deg);
        bottom: 37%;
    }
}

/* Скрываем бургер на десктопе */
@media all and (min-width: 651px) {
    .burger-btn {
        display: none;
    }
}