:root {
    --nv-ivory: #f4efe5;
    --nv-cream: #fbf9f4;
    --nv-paper: #fffdfa;
    --nv-ink: #2b2925;
    --nv-muted: #746f67;
    --nv-gold: #b79a67;
    --nv-gold-dark: #927548;
    --nv-gold-soft: #d8c8a8;
    --nv-line: rgba(43, 41, 37, .10);
    --nv-dark: #26241f;
    --nv-dark-soft: #312e28;
    --nv-radius: 4px;
    --nv-shadow: 0 18px 50px rgba(33, 29, 23, .08);
    --nv-shadow-soft: 0 10px 32px rgba(33, 29, 23, .06);
}

html { scroll-behavior: smooth; }

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    opacity: .035;
    background-image: radial-gradient(rgba(39,37,33,.55) .55px, transparent .55px);
    background-size: 5px 5px;
    mix-blend-mode: multiply;
}

.page-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--nv-gold-dark), var(--nv-gold-soft));
    z-index: 1100;
}

.reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity .7s cubic-bezier(.22,1,.36,1), transform .7s cubic-bezier(.22,1,.36,1);
}

.reveal.is-visible {
    opacity: 1;
    transform: none;
}

.reveal-delay-1 { transition-delay: .08s; }
.reveal-delay-2 { transition-delay: .16s; }
.reveal-delay-3 { transition-delay: .24s; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }
}

body {
    margin: 0;
    font-family: "Manrope", "Segoe UI", Tahoma, sans-serif;
    background: var(--nv-cream);
    color: var(--nv-ink);
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: var(--nv-gold);
    color: #fff;
}

.text-gold { color: var(--nv-gold) !important; }
.bg-gold { background: var(--nv-gold) !important; color: #fff !important; }

.site-topbar {
    position: relative !important; 
    z-index: 9999 !important; 
    background: var(--nv-dark);
    color: rgba(255,255,255,.78);
    min-height: 38px;
    font-size: .76rem;
    letter-spacing: .02em;
}

.site-topbar .container {
    min-height: 38px;
}

.site-topbar i {
    color: var(--nv-gold);
}

.site-topbar a {
    color: inherit;
    text-decoration: none;
}

.site-topbar a:hover {
    color: #fff;
}

.language-switcher > a {
    color: rgba(255,255,255,.86) !important;
}

.site-navbar {
    position: sticky;
    top: 0;
    z-index: 1040;
    background: rgba(255, 253, 249, .96) !important;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--nv-line);
    transition: box-shadow .25s ease, background-color .25s ease;
}

.site-navbar .container {
    min-height: 84px;
}

.navbar-brand {
    display: flex;
    align-items: center;
    padding: 0;
    margin-right: 1.5rem;
}

.navbar-brand img {
    height: 54px;
    width: auto;
    object-fit: contain;
}

.navbar-nav .nav-link {
    position: relative;
    color: var(--nv-ink) !important;
    font-size: .76rem;
    font-weight: 700;
    letter-spacing: .09em;
    text-transform: uppercase;
    padding: .8rem .75rem !important;
    transition: color .25s ease;
}

.navbar-nav .nav-link::after {
    content: "";
    position: absolute;
    left: .75rem;
    right: .75rem;
    bottom: .38rem;
    height: 1px;
    background: var(--nv-gold);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform .25s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--nv-gold-dark) !important;
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    transform: scaleX(1);
}

.navbar-toggler {
    padding: .45rem .6rem;
}

.btn-nav-booking {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: .7rem 1.25rem;
    border: 1px solid var(--nv-gold);
    background: transparent;
    color: var(--nv-gold-dark);
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .09em;
    text-transform: uppercase;
    text-decoration: none;
    transition: all .25s ease;
}

.btn-nav-booking:hover {
    background: var(--nv-gold);
    color: #fff;
    box-shadow: 0 8px 22px rgba(180,154,106,.20);
}

.dropdown-menu {
    border: 1px solid var(--nv-line);
    border-top: 2px solid var(--nv-gold);
    border-radius: 0;
    box-shadow: var(--nv-shadow);
    padding: .45rem 0;
    background: #fff;
    z-index: 10000 !important; 
}

.dropdown-item {
    padding: .65rem 1rem;
    color: var(--nv-ink);
    font-size: .82rem;
}

.dropdown-item:hover,
.dropdown-item:focus {
    background: var(--nv-ivory);
    color: var(--nv-gold-dark);
}

.dropdown-divider {
    border-top-color: var(--nv-line);
}

.zalo-float {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 54px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: #0068ff;
    color: #fff;
    font-size: 23px;
    text-decoration: none;
    box-shadow: 0 12px 28px rgba(0,0,0,.18);
    z-index: 1040;
    transition: transform .25s ease, box-shadow .25s ease;
}

.zalo-float:hover {
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 16px 34px rgba(0,0,0,.23);
}

.btn-booking-sticky {
    position: fixed;
    right: 18px;
    top: 50%;
    transform: translateY(-50%) rotate(-90deg);
    transform-origin: right center;
    z-index: 1050;
    border: 0;
    border-radius: 3px 3px 0 0;
    padding: .76rem 1.35rem;
    background: var(--nv-gold);
    color: #fff;
    font-size: .69rem;
    font-weight: 700;
    letter-spacing: .12em;
    box-shadow: 0 12px 28px rgba(0,0,0,.14);
    transition: background .25s ease, color .25s ease;
}

.btn-booking-sticky:hover {
    background: var(--nv-dark);
    color: #fff;
}

#bookingSidebar {
    width: 410px;
    border-left: 1px solid var(--nv-line);
    box-shadow: -16px 0 50px rgba(20,17,12,.10) !important;
}

#bookingSidebar .offcanvas-header {
    padding: 1.4rem 1.5rem;
    background: var(--nv-paper);
    border-bottom: 1px solid var(--nv-line) !important;
}

#bookingSidebar .offcanvas-title {
    color: var(--nv-ink) !important;
    font-family: "Lora", "Times New Roman", serif;
    font-size: 1.4rem;
    letter-spacing: .02em !important;
    text-transform: none !important;
}

#bookingSidebar .offcanvas-body {
    padding: 1.6rem !important;
    background: var(--nv-cream) !important;
}

#bookingSidebar .be-container {
    padding: 0 !important;
    max-width: 100%;
}

#bookingSidebar #block-search {
    width: 100%;
    margin: 0;
    background: transparent !important;
    box-shadow: none !important;
}

#be-booking-form {
    width: 100%;
    max-width: 1200px;
    min-height: 500px;
    margin: 0 auto;
}

#tl-booking-cart {
    z-index: 1040 !important;
}

.footer {
    position: relative;
    background: var(--nv-dark);
    color: rgba(255,255,255,.68);
    padding: 76px 0 24px;
    border-top: 1px solid rgba(255,255,255,.08);
}

.footer::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(120deg, rgba(180,154,106,.05), transparent 45%, rgba(180,154,106,.03));
}

.footer > .container {
    position: relative;
    z-index: 1;
}

.footer-brand {
    display: inline-flex;
    padding: 0;
    background: transparent !important; 
}

.footer-brand img {
    height: 60px;
    width: auto;
    object-fit: contain;
}

.footer h5 {
    margin-bottom: 20px;
    color: var(--nv-gold);
    font-family: "Lora", "Times New Roman", serif;
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
}

.footer a {
    color: rgba(255,255,255,.72);
    text-decoration: none;
    transition: color .2s ease;
}

.footer a:hover {
    color: #fff;
}

.footer-social {
    display: flex;
    gap: .55rem;
}

.footer-social a {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255,255,255,.18);
    border-radius: 50%;
}

.footer-social a:hover {
    border-color: var(--nv-gold);
    background: var(--nv-gold);
}

.footer-line {
    border-color: rgba(255,255,255,.10) !important;
}

@media (max-width: 1199.98px) {
    .navbar-nav .nav-link {
        padding-left: .5rem !important;
        padding-right: .5rem !important;
    }
    .navbar-nav .nav-link::after {
        left: .5rem;
        right: .5rem;
    }
}

@media (max-width: 991.98px) {
    .site-navbar .container {
        min-height: 72px;
    }

    .navbar-brand img {
        height: 48px;
    }

    .navbar-collapse {
        padding: .8rem 0 1.2rem;
    }

    .navbar-nav .nav-link {
        padding: .8rem 0 !important;
        font-size: .75rem;
    }

    .navbar-nav .nav-link::after {
        display: none;
    }

    .btn-nav-booking {
        width: 100%;
        margin-top: .7rem;
    }

    #bookingSidebar {
        width: min(100vw, 410px);
    }

    .footer {
        padding-top: 60px;
    }
}

@media (max-width: 767.98px) {
    .site-topbar {
        display: none !important;
    }

    .btn-booking-sticky {
        right: 9px;
        padding: .64rem 1rem;
        font-size: .62rem;
    }

    .zalo-float {
        right: 16px;
        bottom: 18px;
        width: 50px;
        height: 50px;
        font-size: 21px;
    }

    .footer {
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }
}

/* ================= TỐI ƯU GIAO DIỆN MOBILE TOÀN TRANG ================= */
@media (max-width: 767.98px) {
    /* Tránh thanh Bottom Menu che mất nội dung ở chân trang */
    body {
        padding-bottom: 70px !important;
    }

    /* Thu nhỏ đồng loạt tất cả các Banner (Trang Liên Hệ, Dịch Vụ, Thư Viện...) */
    .bg-dark[style*="min-height: 400px"], 
    .bg-dark[style*="min-height: 350px"],
    .bg-dark[style*="min-height: 250px"] {
        min-height: 200px !important;
        padding-top: 2rem !important;
        padding-bottom: 2rem !important;
        background-attachment: scroll !important; /* Fix lỗi background giật lag trên iOS */
    }

    /* Bóp nhỏ kích thước chữ tiêu đề trên Banner */
    .display-4, .display-5 {
        font-size: 1.6rem !important;
        line-height: 1.3 !important;
    }
    .lead {
        font-size: 0.9rem !important;
    }

    /* Giảm một nửa khoảng trắng thừa của các khối section trên điện thoại */
    .py-5 { padding-top: 2.5rem !important; padding-bottom: 2.5rem !important; }
    .my-5 { margin-top: 2.5rem !important; margin-bottom: 2.5rem !important; }
    .pb-5 { padding-bottom: 2.5rem !important; }
    .pt-5 { padding-top: 2.5rem !important; }
}
/* Khóa cứng chiều ngang, ngăn chặn lỗi kéo ngang lộ khoảng trắng */
html, body {
    overflow-x: hidden !important;
    width: 100% !important;
    max-width: 100vw !important;
    position: relative;
}