:root {
    --header-border-bottom-width: 0.1rem;
    --header-inner-padding-top: 1.6rem;
    --header__left-padding-right: 2.4rem;
    --logo-img-height: 7.2rem;
    --nav-margin-left: 5.8rem;
    --nav-gap: 2rem;
    --nav-a-font-size: 2.2rem;
    --nav-a-height: 1.2em;
}

.header {
    display: flex;
    width: 100%;
    height: var(--header-height);
    position: fixed;
    top: 0;
    border-bottom-width: var(--header-border-bottom-width);
    border-bottom-style: solid;
    border-color: transparent;
    /* backdrop-filter: blur(0.76rem) brightness(100%);
  -webkit-backdrop-filter: blur(0.76rem) brightness(100%); */
    border-image: linear-gradient(
            90deg,
            rgba(250, 250, 250, 0.01) 0%,
            rgba(250, 250, 250, 0.12) 50%,
            rgba(250, 250, 250, 0.05) 100%
        )
        1;
    z-index: 3;
    padding-left: var(--custom-container-px);
}

.header-inner,
.header__left {
    display: flex;
    align-items: center;
}

.header-inner {
    width: 100%;
    justify-content: space-between;
    padding-top: var(--header-inner-padding-top);
    padding-bottom: var(--header-inner-padding-top);
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-decoration: none;
}

.logo img {
    height: var(--logo-img-height);
}

.logo .logo__white,
.logo--mobile {
    display: none;
}

.header.original {
    background-color: transparent;
}

.header.white {
    background-color: white;
    box-shadow: 0 1px 10.5px 0 rgba(0, 0, 0, 0.1);
}

.header.original .logo__white {
    display: block;
}

.header.original .logo__original {
    display: none;
}

.header.white .logo__white {
    display: none;
}

.header.white .logo__original {
    display: block;
}

.header.white .nav a {
    color: var(--accent-color);
}

.header.white .lang-btn svg path {
    stroke: var(--accent-color);
}

.header.original .nav a {
    color: var(--white-color);
}

.nav {
    margin-left: var(--nav-margin-left);
    display: flex;
    gap: var(--nav-gap);
}

.nav a {
    color: var(--white-color);
    text-decoration: none;
    font-weight: var(--fw-semibold);
    font-size: var(--nav-a-font-size);
    display: inline-block;
    overflow: hidden;
    line-height: 1.2; /* đảm bảo đúng chiều cao dòng */
    height: var(--nav-a-height); /* chỉ hiển thị 1 dòng */
}

.link-text-wrapper {
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
}

.nav a:hover .link-text-wrapper {
    transform: translateY(-2.6rem);
    cursor: pointer;
}
.nav label:hover .link-text-wrapper {
    transform: translateY(-2.6rem);
    cursor: pointer;
}
.actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.lang-btn,
.menu-toggle--open {
    width: 3.5rem;
    height: auto;
    aspect-ratio: 1 / 1;
    background: transparent;
    border: none;
    cursor: pointer;
    margin-left: auto;
}

.menu-toggle--open,
.menu-toggle--close {
    display: block;
}

.menu-toggle--open {
    width: 4rem;
}

.menu-toggle--close {
    width: 3rem;
}

.menu-toggle--close {
    display: none;
}

.lang-btn {
    margin-right: 2.6rem;
}

.lang-btn svg,
.menu-toggle-btn svg {
    width: 100%;
    height: 100%;
}

.lang-btn svg path,
.menu-toggle--open svg path {
    stroke: var(--white-color);
}

.menu-toggle--close svg path {
    fill: var(--white-color);
}

.menu-toggle-btn {
    display: none;
    order: 3;
}

.header__btnLogin {
    display: flex;
    align-items: center;
    background-color: var(--primary-color);
    border: none;
    width: 27.9rem;
    height: auto;
    color: white;
    font-size: 2.2rem;
    font-weight: var(--fw-semibold);
    padding-right: var(--custom-container-px);
    padding-left: 3.3rem;
    white-space: nowrap;
    border-left: 1px solid #ffffff40;
    cursor: pointer;
    transition: background 0.3s ease;
}

.header__btnLogin svg {
    position: absolute;
    right: 2.8rem;
    width: 2.025rem;
    height: 1.575rem;
    transition: transform 0.3s ease;
}

.header__btnLogin:hover svg {
    transform: rotate(-45deg); /* xoay ngang sang trái */
}

/* Tổng thể dropdown */
.dropdown-collection {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 2rem;
    width: calc(100% - 25.6rem);
    height: 56rem;
    background-color: rgb(248, 250, 252);
    margin-left: 12.8rem;
    display: none;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
    z-index: 99;
}

.dropdown-collection__container {
    display: flex;
    max-width: 100%;
}

/* Left menu */
.dropdown-collection__left {
    width: 44rem;
    padding-right: 3rem;
    background-color: white;
    height: 56rem;
    padding-left: 2rem; /* ban đầu chữ cách trái đúng 2rem */
}
.dropdown-collection__left ul {
    padding-left: 0;
    margin: 0;
}

.dropdown-collection__left li {
    position: relative;
    font-size: 2rem;
    font-weight: 500;
    color: #333;
    cursor: pointer;
    margin-top: 3.2rem;
    list-style: none;
    transition: color 0.3s ease, font-weight 0.3s ease, padding-left 0.3s ease;
}

/* Dấu vuông xanh */
.dropdown-collection__left li::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0; /* sát lề trái */
    width: 1rem;
    height: 1rem;
    background-color: var(--primary-color, #007bff);
    transform: translateX(-100%) translateY(-50%); /* nằm ngoài, chưa thấy */
    opacity: 0;
    transition: transform 0.4s ease, opacity 0.4s ease;
}

/* Hover hoặc active */
.dropdown-collection__left li:hover,
.dropdown-collection__left li.active {
    color: var(--primary-color, #007bff);
    font-weight: 600;
    padding-left: 2.8rem; /* đẩy chữ ra nhường chỗ cho dấu vuông */
}

.dropdown-collection__left li:hover::before,
.dropdown-collection__left li.active::before {
    transform: translateX(0) translateY(-50%); /* dấu vuông trượt vào */
    opacity: 1;
}

/* Right content */
.dropdown-collection__right {
    flex-grow: 1;
    padding-left: 3.2rem;
    width: 144rem;
    height: 56rem;
    display: flex;
    flex-wrap: wrap;
    gap: 4rem;
    border-bottom: 0.4rem solid var(--highlight-color);
}

.line {
    width: 1px; /* Độ rộng đường kẻ */
    background-color: #eee; /* Màu xám nhạt */
    height: 50rem; /* Chiều cao tự động theo nội dung */
    align-self: stretch; /* Dãn chiều cao theo các phần tử bên cạnh */
    margin-top: 3.2rem;
    margin-bottom: 3.2rem;
}

/* Hide inactive tab */
.tab-content {
    display: none;
    width: 100%;
    flex-wrap: wrap;
    gap: 4rem;
}

.tab-content.active {
    display: flex;
    justify-content: space-between;
    flex-wrap: nowrap;
}

/* Group */
.collection-group {
    min-width: 25rem;
}

.collection-group h4 {
    margin-top: 3.6rem;
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 4.4rem;
}

.collection-group ul {
    list-style: none;
    padding-left: 0 !important;
}

.collection-group ul li {
    margin-bottom: 4.4rem;
    font-size: 2rem;
    color: #333;
}

.dropdown-collection__right li:hover {
    cursor: pointer;
}

@media (max-width: 1199px) {
}

@media (max-width: 768px) {
    .header nav,
    .header__btnLogin,
    .logo__white {
        display: none !important;
    }

    .header__left {
        justify-content: space-between;
        padding-right: var(--custom-container-px);
    }

    .lang-btn,
    .menu-toggle-btn {
        margin-left: 0;
    }

    .lang-btn {
        order: 1;
        margin-right: 0;
    }

    .logo {
        order: 2;
    }

    .menu-toggle-btn,
    .logo--mobile {
        display: block;
    }

    .logo--mobile {
        height: 4.5rem !important;
    }
}