/* =============================
   Global / Navbar
   ============================= */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    margin: 0;
    font-family: 'Poppins', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
    background: #0a0a0a;
    color: #fff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Style cho nút Tham quan 3D */
.nav-link.tour-3d {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.15), rgba(212, 175, 55, 0.25));
    border-radius: 8px;
    padding: 8px 16px !important;
    margin-left: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(212, 175, 55, 0.3);
    position: relative;
    overflow: hidden;
}

.nav-link.tour-3d::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.nav-link.tour-3d:hover::before {
    left: 100%;
}

.nav-link.tour-3d:hover {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.25), rgba(212, 175, 55, 0.35));
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
    border-color: rgba(212, 175, 55, 0.5);
}

.nav-link.tour-3d i {
    color: #d4af37;
    animation: vrPulse 2s ease-in-out infinite;
}

@keyframes vrPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}


/* Navbar trong suốt hơn với animation */

.site-navbar {
    background: rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(8px) saturate(120%);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid rgba(201, 169, 97, 0.1);
    transform: translateY(0);
}

.site-navbar.scrolled {
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(15px) saturate(140%);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.site-navbar:hover {
    background: rgba(0, 0, 0, 0.55);
    border-bottom-color: rgba(201, 169, 97, 0.25);
}

/* Navbar container */
.site-navbar .container {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
}

.site-name {
    font-weight: 700;
    font-size: 1.6rem;
    background: linear-gradient(135deg, #f5e6ca, #c9a961, #b8860b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 1px;
    transition: transform 0.3s ease, filter 0.3s ease;
    white-space: nowrap;
}

.site-name:hover {
    transform: scale(1.05);
    filter: brightness(1.2);
}


/* Thêm hiệu ứng cho nav links */

.site-navbar .nav-link {
    position: relative;
    color: #e8e8e8;
    transition: all 0.3s ease;
    padding: 8px 16px !important;
}

.site-navbar .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #c9a961, #d4af37);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.site-navbar .nav-link:hover {
    color: #c9a961;
    transform: translateY(-2px);
}

.site-navbar .nav-link:hover::after {
    width: 80%;
}


/* Dropdown nâng cấp */

.dropdown-menu {
    background: rgba(10, 10, 10, 0.95);
    border: 1px solid rgba(201, 169, 97, 0.3);
    backdrop-filter: blur(15px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.dropdown-menu a {
    color: #e8e8e8;
    transition: all 0.3s ease;
    position: relative;
    padding: 10px 20px;
}

.dropdown-menu a::before {
    content: '→';
    position: absolute;
    left: 8px;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
    color: #c9a961;
}

.dropdown-menu a:hover {
    background: rgba(201, 169, 97, 0.15);
    color: #c9a961;
    padding-left: 30px;
}

.dropdown-menu a:hover::before {
    opacity: 1;
    transform: translateX(0);
}

.dropdown-menu.fade-in {
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.dropdown-menu.show {
    opacity: 1;
    transform: translateY(0);
}


/* =============================
   Hero với parallax effect
   ============================= */

.hero-section {
    background: url('sources/Z4321694674342_8659E.jpg') no-repeat;
    background-position: center center;
    background-size: cover;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-attachment: fixed;
    height: 100vh;
    min-height: 500px;
}

.hero-section::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.65), rgba(0, 0, 0, 0.5));
    animation: fadeIn 0.8s ease-out;
}

.hero-section>div {
    position: relative;
    z-index: 2;
    animation: heroContentFadeUp 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes heroContentFadeUp {
    0% {
        opacity: 0;
        transform: translateY(40px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    color: #e8d5a0;
    font-size: 1.1rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    font-weight: 400;
    animation: fadeInDown 1s ease-out 0.3s both;
}

.hero-description {
    animation: fadeInUp 1s ease-out 0.6s both;
    max-width: 700px;
    margin: 0 auto;
}
 .btn-outline-premium:active {
        transform: translateY(-2px) scale(1.02);
    }
    .hero-buttons {
        display: flex;
        gap: 20px;
        justify-content: center;
        align-items: center;
        flex-wrap: wrap;
    }
    /* Carousel container */
    .infinite-carousel {
        width: 100vw;
        margin-left: calc(-50vw + 50%);
        overflow: hidden;
        padding: 50px 0;
        mask-image: linear-gradient(90deg, transparent 0%, black 8%, black 92%, transparent 100%);
    }
    /* Carousel track */
    .carousel-track {
        display: inline-flex;
        gap: 30px;
        align-items: center;
        white-space: nowrap;
        animation: scroll-left 40s linear infinite;
        padding-left: 30px;
    }
    /* Carousel item wrapper */
    .carousel-item-wrapper {
        position: relative;
        width: 300px;
        height: 300px;
        border-radius: 20px;
        overflow: hidden;
        transition: transform 0.6s cubic-bezier(.2, .8, .2, 1), box-shadow 0.6s;
        border: 2px solid rgba(201, 169, 97, 0.25);
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
        animation: imageSlideIn 0.8s ease-out backwards;
        cursor: pointer;
    }
    .carousel-item-wrapper:nth-child(1) {
        animation-delay: 0.1s;
    }
    .carousel-item-wrapper:nth-child(2) {
        animation-delay: 0.2s;
    }
    .carousel-item-wrapper:nth-child(3) {
        animation-delay: 0.3s;
    }
    .carousel-item-wrapper:nth-child(4) {
        animation-delay: 0.4s;
    }
    .carousel-item-wrapper:nth-child(5) {
        animation-delay: 0.5s;
    }
    @keyframes imageSlideIn {
        from {
            opacity: 0;
            transform: translateX(-50px) scale(0.8);
        }
        to {
            opacity: 1;
            transform: translateX(0) scale(1);
        }
    }
    .carousel-track img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: center;
        display: block;
        transition: transform 0.6s ease, filter 0.4s;
    }
    .carousel-overlay {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
        padding: 20px;
        transform: translateY(100%);
        transition: transform 0.4s ease;
    }
    .carousel-overlay h5 {
        color: #d4af37;
        font-size: 1.2rem;
        margin-bottom: 8px;
        font-weight: 600;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }
    .carousel-overlay p {
        color: #e8e8e8;
        font-size: 0.9rem;
        margin: 0;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }
    .carousel-item-wrapper:hover {
        transform: translateY(-10px) scale(1.08) rotateZ(1deg);
        box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 40px rgba(201, 169, 97, 0.5);
        border-color: #c9a961;
    }
    .carousel-item-wrapper:hover img {
        transform: scale(1.15) rotate(2deg);
        filter: brightness(1.15) saturate(1.1);
    }
    .carousel-item-wrapper:hover .carousel-overlay {
        transform: translateY(0);
    }
    @keyframes scroll-left {
        0% {
            transform: translateX(0);
        }
        100% {
            transform: translateX(-50%);
        }
    }
    .infinite-carousel:hover .carousel-track {
        animation-play-state: paused;
    }
    /* Responsive */
    .section-header {
        animation: fadeInUp 0.8s ease-out;
        word-wrap: break-word;
        overflow-wrap: break-word;
        padding: 0 15px;
    }
    .section-subtitle {
        animation: fadeInDown 0.6s ease-out;
        color: #e8d5a0;
        font-size: 0.9rem;
        letter-spacing: 2px;
        text-transform: uppercase;
        font-weight: 500;
        margin-bottom: 15px;
    }
    .section-description {
        color: #d0d0d0;
        font-size: 1.1rem;
        line-height: 1.7;
        max-width: 700px;
        margin: 0 auto;
        padding: 0 20px;
    }
    .animated-btn {
        background: linear-gradient(135deg, #d4af37, #daa520, #b8860b);
        background-size: 200%;
        color: #0a0a0a;
        font-weight: 700;
        padding: 14px 38px;
        border-radius: 50px;
        border: 2px solid #d4af37;
        box-shadow: 0 8px 25px rgba(212, 175, 55, 0.4);
        transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        text-transform: uppercase;
        letter-spacing: 1.5px;
        animation: buttonBounce 1s ease-out 0.8s both;
        display: inline-block;
        position: relative;
        overflow: hidden;
    }
    .animated-btn::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.3);
        transform: translate(-50%, -50%);
        transition: width 0.6s, height 0.6s;
    }
    .animated-btn:hover::before {
        width: 300px;
        height: 300px;
    }
    @keyframes buttonBounce {
        0% {
            opacity: 0;
            transform: scale(0.8) translateY(20px);
        }
        60% {
            transform: scale(1.05) translateY(0);
        }
        100% {
            opacity: 1;
            transform: scale(1) translateY(0);
        }
    }
    .animated-btn:hover {
        transform: translateY(-6px) scale(1.05);
        box-shadow: 0 15px 40px rgba(212, 175, 55, 0.7);
        background-position: 100%;
        border-color: #e5c158;
    }
    .animated-btn:active {
        transform: translateY(-2px) scale(1.02);
        box-shadow: 0 8px 20px rgba(212, 175, 55, 0.5);
    }
    .btn-outline-premium {
        border: 2px solid rgba(255, 255, 255, 0.3);
        background: transparent;
        color: #fff;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        animation: buttonBounce 1s ease-out 0.9s both;
        padding: 14px 38px;
        border-radius: 50px;
        font-weight: 600;
        letter-spacing: 1px;
        display: inline-block;
        position: relative;
        overflow: hidden;
    }
    .btn-outline-premium::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(201, 169, 97, 0.3), transparent);
        transition: left 0.5s;
    }
    .btn-outline-premium:hover::before {
        left: 100%;
    }
    .btn-outline-premium:hover {
        background: rgba(255, 255, 255, 0.15);
        border-color: #c9a961;
        color: #c9a961;
        transform: translateY(-6px) scale(1.05);
        box-shadow: 0 12px 35px rgba(201, 169, 97, 0.4);
    }
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


/* Aurora gradient text */

.aurora-text {
    --fs: clamp(2.8rem, 7vw, 5.5rem);
    font-size: var(--fs);
    font-weight: 800;
    letter-spacing: 0px;
    text-transform: uppercase;
    background: linear-gradient(135deg, #faf3e0, #e8d5a0, #c9a961, #b8860b, #c9a961, #e8d5a0);
    background-size: 400%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: auroraShiftLux 10s ease infinite, scaleIn 1s ease-out 0.4s both;
    filter: none;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 90vw;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes auroraShiftLux {
    0%,
    100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.aurora-text::after {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: none;
    pointer-events: none;
    z-index: -1;
}


/* =============================
   Sections với fade-in animation
   ============================= */

section {
    opacity: 0;
    animation: sectionFadeIn 0.8s ease-out forwards;
}

section:nth-child(even) {
    animation-delay: 0.2s;
}

@keyframes sectionFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


/* =============================
   Bài viết (Infinite Carousel)
   ============================= */

.baiviet {
    .carousel-item-wrapper {
        width: 240px;
        height: 240px;
    }
}

@media (max-width: 576px) {
    .carousel-item-wrapper {
        width: 200px;
        height: 200px;
    }
}


/* =============================
   Tìm hiểu (cards)
   ============================= */

.timhieu {
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.6)), url('sources/Z4321694674342_8659E.jpg') center/cover no-repeat;
    background-size: cover;
    background-attachment: fixed;
    padding: 100px 5%;
}

.hover-card {
    overflow: hidden;
    border-radius: 20px;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid rgba(201, 169, 97, 0.2);
    background: rgba(20, 20, 20, 0.6);
    backdrop-filter: blur(10px);
    animation: cardFadeUp 0.8s ease-out backwards;
    cursor: pointer;
}

.hover-card:nth-child(1) {
    animation-delay: 0.2s;
}

.hover-card:nth-child(2) {
    animation-delay: 0.4s;
}

.hover-card:nth-child(3) {
    animation-delay: 0.6s;
}

@keyframes cardFadeUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hover-card:hover {
    transform: translateY(-15px) scale(1.03) rotateX(2deg);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7), 0 0 50px rgba(201, 169, 97, 0.4);
    border-color: #c9a961;
    background: rgba(30, 30, 30, 0.7);
}

.card-img-wrapper {
    position: relative;
    overflow: hidden;
}

.card-img-wrapper img {
    transition: transform 0.6s ease, filter 0.4s;
}

.hover-card:hover .card-img-wrapper img {
    transform: scale(1.15) rotate(2deg);
    filter: brightness(1.25) saturate(1.1);
}

.card-img-overlay-premium {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #d4af37;
    opacity: 0;
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.hover-card:hover .card-img-overlay-premium {
    opacity: 0.4;
    transform: translate(-50%, -50%) scale(1.2);
}

.hover-card .card-body {
    padding: 20px;
}

.hover-card .card-title,
.hover-card .card-text {
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}


/* =============================
   About Section
   ============================= */

.about-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
    padding: 100px 8%;
    background: linear-gradient(180deg, #1a1a1a 0%, #252525 50%, #0a0a0a 100%);
}

.about-content {
    animation: slideInLeft 1s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-60px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.about-text {
    flex: 1;
    color: #e8e8e8;
    max-width: 48%;
}

.about-video {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.about-img {
    width: 100%;
    max-width: 560px;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7), 0 0 30px rgba(201, 169, 97, 0.2);
    transition: transform 0.8s cubic-bezier(.2, .9, .3, 1), filter 0.6s, box-shadow 0.6s;
    transform-origin: center;
    border: 2px solid rgba(201, 169, 97, 0.25);
    animation: slideInRight 1s ease-out;
    cursor: pointer;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(60px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.about-img:hover {
    transform: scale(1.08) rotateZ(1deg) translateY(-10px);
    filter: brightness(1.15) saturate(1.1);
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.85), 0 0 60px rgba(201, 169, 97, 0.5);
    border-color: #d4af37;
}

.about-media-wrapper {
    animation: slideInRight 1s ease-out 0.2s both;
}

.about-image-container {
    margin-bottom: 30px;
}

.about-video-container video {
    width: 100%;
    max-width: 560px;
    border-radius: 20px;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.6), 0 0 25px rgba(201, 169, 97, 0.2);
    border: 2px solid rgba(201, 169, 97, 0.25);
    transition: transform 0.6s ease, box-shadow 0.4s;
    cursor: pointer;
}

.about-video-container video:hover {
    transform: scale(1.05) translateY(-5px);
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.85), 0 0 50px rgba(201, 169, 97, 0.5);
}

@media (max-width: 992px) {
    .about-section {
        flex-direction: column;
        padding: 60px 5%;
        text-align: center;
    }
    .about-text {
        max-width: 100%;
    }
    .about-video {
        justify-content: center;
        margin-top: 30px;
    }
}

.about-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
    flex-wrap: wrap;
}

.about-left {
    flex: 1;
    min-width: 300px;
}

.about-left h2 {
    font-size: 2.5rem;
    margin-bottom: 25px;
    color: #e8d5a0;
    font-weight: 700;
    animation: fadeInUp 0.8s ease-out 0.3s both;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.about-left p {
    font-size: 1.15rem;
    line-height: 1.8;
    margin-bottom: 22px;
    color: #d0d0d0;
    animation: fadeInUp 0.8s ease-out 0.5s both;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.about-buttons {
    animation: fadeInUp 0.8s ease-out 0.7s both;
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.about-right {
    flex: 1;
    min-width: 300px;
    display: flex;
    justify-content: center;
}


/* =============================
   Comment slider
   ============================= */

.comment-section {
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1582213782179-e0d53f98f2ca') center/cover no-repeat;
    position: relative;
    padding: 100px 0;
    background-attachment: fixed;
}

.comment-section .overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
}

.comment-section .container {
    position: relative;
    z-index: 2;
}

.slider {
    position: relative;
    width: 100%;
    height: 460px;
    overflow: hidden;
}

.item {
    position: absolute;
    width: 380px;
    height: 420px;
    text-align: left;
    background: linear-gradient(135deg, rgba(26, 26, 26, 0.95), rgba(20, 20, 20, 0.9));
    backdrop-filter: blur(20px) saturate(150%);
    border-radius: 24px;
    padding: 30px;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    left: calc(50% - 190px);
    top: 20px;
    color: #e8e8e8;
    border: 2px solid rgba(212, 175, 55, 0.3);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8), 0 0 40px rgba(212, 175, 55, 0.15);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.item h3 {
    color: #d4af37;
    font-size: 1.6rem;
    margin-bottom: 12px;
    font-weight: 700;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.item p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #d0d0d0;
    word-wrap: break-word;
    overflow-wrap: break-word;
    flex: 1;
    margin-bottom: 10px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 6;
    -webkit-box-orient: vertical;
}

.testimonial-header {
    margin-bottom: 10px;
    flex-shrink: 0;
}

.testimonial-header i {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.testimonial-author {
    margin-top: auto;
    padding-top: 15px;
    border-top: 2px solid rgba(212, 175, 55, 0.4);
    flex-shrink: 0;
}

.testimonial-author strong {
    display: block;
    font-size: 1.05rem;
    margin-bottom: 5px;
    letter-spacing: 0.5px;
    color: #d4af37;
}

.testimonial-author p {
    margin: 0;
    color: #b8b8b8;
    font-size: 0.9rem;
}

.testimonial-author small {
    color: #a8a8a8;
}

.item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 35px 90px rgba(0, 0, 0, 0.95), 0 0 70px rgba(212, 175, 55, 0.4);
    border-color: #d4af37;
    background: linear-gradient(135deg, rgba(30, 30, 30, 0.98), rgba(25, 25, 25, 0.95));
}

#next,
#prev {
    position: absolute;
    top: 50%;
    color: #0a0a0a;
    background: linear-gradient(135deg, #d4af37, #daa520);
    backdrop-filter: blur(10px);
    border: 2px solid #d4af37;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    font-size: 1.6rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateY(-50%);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 25px rgba(212, 175, 55, 0.4);
}

#next:hover,
#prev:hover {
    background: linear-gradient(135deg, #e5c158, #d4af37);
    border-color: #e5c158;
    transform: translateY(-50%) scale(1.18);
    box-shadow: 0 15px 45px rgba(212, 175, 55, 0.7);
}

#next:active,
#prev:active {
    transform: translateY(-50%) scale(1.05);
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.5);
}

#prev {
    left: 50px;
    animation: slideInLeft 0.8s ease-out 1s both;
}

#next {
    right: 50px;
    animation: slideInRight 0.8s ease-out 1s both;
}


/* === Footer === */

.site-footer {
    background: #0a0a0a;
    color: #d0d0d0;
    padding: 80px 8%;
    font-family: 'Poppins', sans-serif;
    position: relative;
    border-top: 2px solid rgba(201, 169, 97, 0.25);
}

.footer-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px;
}

.footer-container>div {
    animation: fadeInUp 0.8s ease-out backwards;
}

.footer-container>div:nth-child(1) {
    animation-delay: 0.1s;
}

.footer-container>div:nth-child(2) {
    animation-delay: 0.2s;
}

.footer-container>div:nth-child(3) {
    animation-delay: 0.3s;
}

.footer-logo {
    width: 80px;
    margin-bottom: 20px;
    border-radius: 12px;
    filter: drop-shadow(0 0 15px rgba(201, 169, 97, 0.4));
    transition: transform 0.4s ease, filter 0.4s ease;
}

.footer-logo:hover {
    transform: scale(1.15) rotate(8deg);
    filter: drop-shadow(0 0 25px rgba(201, 169, 97, 0.7));
}

.footer-about {
    max-width: 350px;
}

.footer-about p {
    font-size: 1rem;
    line-height: 1.7;
    color: #b8b8b8;
    margin-bottom: 25px;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.footer-social a {
    color: #c9a961;
    margin-right: 15px;
    font-size: 20px;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-social a:hover {
    color: #e8d5a0;
    transform: scale(1.2) translateY(-5px) rotate(5deg);
}

.footer-links h4 {
    color: #e8d5a0;
    margin-bottom: 20px;
    font-size: 1.25rem;
    font-weight: 600;
}

.footer-links a {
    display: block;
    color: #a8a8a8;
    text-decoration: none;
    margin-bottom: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    position: relative;
}

.footer-links a::before {
    content: '▸';
    position: absolute;
    left: -15px;
    opacity: 0;
    transition: all 0.3s ease;
    color: #c9a961;
}

.footer-links a:hover {
    color: #e8d5a0;
    padding-left: 15px;
}

.footer-links a:hover::before {
    opacity: 1;
    left: 0;
}

.footer-divider {
    border: none;
    border-top: 1px solid rgba(201, 169, 97, 0.25);
    margin: 40px 0;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    animation: fadeIn 0.8s ease-out 0.5s both;
}

.footer-bottom p {
    font-size: 0.95rem;
    color: #888;
}

.back-to-top {
    background: linear-gradient(135deg, #c9a961, #b8860b);
    color: #0a0a0a;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.4s ease;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.2rem;
    box-shadow: 0 5px 20px rgba(201, 169, 97, 0.3);
    position: relative;
    overflow: hidden;
}

.back-to-top::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s, height 0.4s;
}

.back-to-top:hover::before {
    width: 100px;
    height: 100px;
}

.back-to-top:hover {
    background: linear-gradient(135deg, #e8d5a0, #c9a961);
    transform: translateY(-8px) rotate(360deg);
    box-shadow: 0 12px 40px rgba(201, 169, 97, 0.6);
}

.back-to-top:active {
    transform: translateY(-4px) scale(0.95);
}


/* Hiệu ứng chữ wave */

.wave-text {
    display: inline-block;
    position: relative;
    animation: waveMoveLux 3s infinite linear;
    background: linear-gradient(90deg, #e8d5a0, #c9a961, #b8860b, #c9a961, #e8d5a0, #c9a961, #b8860b, #c9a961, #e8d5a0);
    background-size: 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

@keyframes waveMoveLux {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}


/* Responsive footer - giữ nguyên logic */

@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    .footer-about p {
        max-width: 100%;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 15px;
    }
}


/* === Scroll Reveal Animation nâng cấp === */

.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}


/* Card text với gradient vàng sang trọng */

.timhieu .card-text {
    display: inline-block;
    position: relative;
    animation: waveMoveLux 3s infinite linear;
    background: linear-gradient(135deg, #707070, #cccaca, #b8b8b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.05rem;
    line-height: 1.7;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.timhieu .card-wave {
    display: inline-block;
    position: relative;
    animation: waveMoveLux 3s infinite linear;
    background: linear-gradient(90deg, #ffffff, #dbdada, #8d8d8d, #808080, #616161);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.timhieu .card-title {
    color: #d1d1d1;
    font-weight: 600;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}


/* Thêm hiệu ứng cho tất cả các nút trong site */

button,
.btn,
a.btn {
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

button:hover,
.btn:hover,
a.btn:hover {
    transform: translateY(-3px);
}

button:active,
.btn:active,
a.btn:active {
    transform: translateY(-1px);
}


/* Hiệu ứng ripple cho buttons */

.ripple-effect {
    position: relative;
    overflow: hidden;
}

.ripple-effect::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s, opacity 0.6s;
    opacity: 0;
}

.ripple-effect:active::after {
    width: 200px;
    height: 200px;
    opacity: 1;
    transition: 0s;
}


/* Smooth scroll cho toàn bộ page */

* {
    scroll-behavior: smooth;
}


/* Text overflow handling cho tất cả headings */

h1,
h2,
h3,
h4,
h5,
h6 {
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}


/* Đảm bảo tất cả text content không bị tràn */

p,
span,
div,
a {
    word-wrap: break-word;
    overflow-wrap: break-word;
}


/* Animation cho links */

a {
    transition: all 0.3s ease;
}

a:not(.btn):hover {
    opacity: 0.8;
}


/* Fade in animation */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}


/* Responsive improvements */

@media (max-width: 768px) {
    .aurora-text {
        font-size: clamp(2rem, 8vw, 3.5rem);
        padding: 0 10px;
    }
    .section-header {
        padding: 0 20px;
    }
    .hero-buttons {
        padding: 0 20px;
    }
    .animated-btn,
    .btn-outline-premium {
        padding: 12px 28px;
        font-size: 0.9rem;
    }
}

@media (max-width: 576px) {
    .aurora-text {
        font-size: clamp(1.5rem, 10vw, 2.5rem);
    }
    .animated-btn,
    .btn-outline-premium {
        padding: 10px 24px;
        font-size: 0.85rem;
        letter-spacing: 0.5px;
    }
    #next,
    #prev {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    #prev {
        left: 20px;
    }
    #next {
        right: 20px;
    }
}
    
/* =============================
   MOBILE OPTIMIZATION
   ============================= */

/* Tablet và màn hình nhỏ hơn */
@media (max-width: 992px) {
    /* Navbar mobile */
    .site-navbar {
        padding: 10px 0;
    }

    .site-name {
        font-size: 1.4rem;
    }

    .navbar-toggler {
        border-color: rgba(201, 169, 97, 0.5);
        padding: 8px 12px;
    }

    .navbar-toggler-icon {
        width: 22px;
        height: 22px;
    }

    /* Hero section */
    .hero-section {
        background-attachment: scroll;
        background-position: center center;
        background-size: cover;
        padding: 140px 20px 80px;
        min-height: 600px;
        height: auto;
    }

    .hero-subtitle {
        font-size: 0.95rem;
        letter-spacing: 2px;
    }

    .hero-description {
        font-size: 1rem;
        padding: 0 15px;
    }

    /* Carousel mobile */
    .infinite-carousel {
        padding: 30px 0;
    }

    .carousel-item-wrapper {
        width: 250px;
        height: 250px;
    }

    .carousel-overlay h5 {
        font-size: 1rem;
    }

    .carousel-overlay p {
        font-size: 0.85rem;
    }

    /* Cards section */
    .timhieu {
        padding: 60px 5%;
        background-attachment: scroll;
    }

    .hover-card {
        margin-bottom: 20px;
    }

    /* Comment slider */
    .slider {
        height: 400px;
    }

    .item {
        width: 340px;
        height: 380px;
        padding: 25px;
        left: calc(50% - 170px);
    }

    .item h3 {
        font-size: 1.4rem;
    }

    .item p {
        font-size: 0.9rem;
    }

    #next, #prev {
        width: 55px;
        height: 55px;
        font-size: 1.4rem;
    }

    #prev {
        left: 30px;
    }

    #next {
        right: 30px;
    }

    /* Footer */
    .site-footer {
        padding: 60px 5%;
    }
}

/* Mobile nhỏ */
@media (max-width: 768px) {
    /* Navbar - TỐI ƯU LAYOUT */
    .site-navbar {
        padding: 8px 0;
    }

    .site-navbar .container {
        padding-left: 15px;
        padding-right: 15px;
        display: flex;
        align-items: center;
        position: relative;
        justify-content: space-between;
    }

    /* Wrapper cho brand và toggler để giữ vị trí */
    .site-navbar .container::before {
        content: '';
        flex: 1 1 auto;
        order: 1;
    }

    .site-name {
        font-size: 1.25rem;
        flex-shrink: 0;
        white-space: nowrap;
        overflow: visible;
        order: 0;
    }

    /* Navbar toggler - CỐ ĐỊNH BÊN PHẢI */
    .navbar-toggler {
        flex-shrink: 0;
        padding: 6px 10px;
        border-color: rgba(201, 169, 97, 0.5);
        order: 2;
        position: relative;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        border-radius: 6px;
    }

    .navbar-toggler:hover {
        background: rgba(201, 169, 97, 0.1);
        border-color: rgba(201, 169, 97, 0.8);
        transform: scale(1.05);
    }

    .navbar-toggler:focus {
        box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.2);
        outline: none;
    }

    .navbar-toggler[aria-expanded="true"] {
        background: rgba(201, 169, 97, 0.15);
        border-color: #c9a961;
    }

    .navbar-toggler-icon {
        width: 20px;
        height: 20px;
        transition: transform 0.3s ease;
        display: inline-block;
    }

    /* Rotate icon khi navbar mở */
    .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon {
        transform: rotate(90deg);
    }

    /* Navbar collapse - xuống dòng dưới với animation */
    .navbar-collapse {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.95);
        backdrop-filter: blur(15px);
        opacity: 0;
        transform: translateY(-10px);
        transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        pointer-events: none;
    }

    .navbar-collapse.show {
        display: block;
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    .navbar-collapse.collapsing {
        display: block;
        transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    /* Animation cho nav items */
    .navbar-collapse.show .nav-item {
        animation: slideInDown 0.4s ease backwards;
    }

    .navbar-collapse.show .nav-item:nth-child(1) {
        animation-delay: 0.05s;
    }

    .navbar-collapse.show .nav-item:nth-child(2) {
        animation-delay: 0.1s;
    }

    .navbar-collapse.show .navbar-nav:last-child .nav-item:nth-child(1) {
        animation-delay: 0.15s;
    }

    .navbar-collapse.show .navbar-nav:last-child .nav-item:nth-child(2) {
        animation-delay: 0.2s;
    }

    @keyframes slideInDown {
        from {
            opacity: 0;
            transform: translateY(-15px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* MỤC CHÍNH - Tất cả nav-link (trừ Tham quan 3D) - ĐỒNG NHẤT */
    .site-navbar .nav-link:not(.tour-3d) {
        font-size: 1.05rem !important;
        font-weight: 600 !important;
        color: #e8d5a0 !important;
        padding: 14px 16px !important;
        background: rgba(212, 175, 55, 0.08);
        border-radius: 8px;
        margin-bottom: 2px;
    }

    /* MỤC CHÍNH - Dropdown toggle - PHÂN BIỆT RÕ RÀNG */
    .site-navbar .dropdown-toggle {
        font-size: 1.05rem !important;
        font-weight: 600 !important;
        color: #e8d5a0 !important;
        padding: 14px 16px !important;
        background: rgba(212, 175, 55, 0.08);
        border-radius: 8px;
        margin-bottom: 2px;
    }

    .site-navbar .dropdown-toggle::after {
        display: inline-block;
        margin-left: 0.5em;
        vertical-align: middle;
    }

    .dropdown-menu {
        background: rgba(10, 10, 10, 0.98);
        border: none;
        margin-top: 5px;
        margin-left: 12px !important;
        border-left: 2px solid rgba(212, 175, 55, 0.3);
    }

    /* MỤC CON - Dropdown items - PHÂN BIỆT RÕ RÀNG */
    .dropdown-menu a {
        padding: 10px 20px 10px 24px !important;
        font-size: 0.88rem !important;
        font-weight: 400 !important;
        color: #c9c9c9 !important;
        position: relative;
    }

    .dropdown-menu a::before {
        content: '▸';
        position: absolute;
        left: 10px;
        color: #c9a961;
        font-size: 0.7rem;
        opacity: 0.6;
    }

    /* Nút Tham quan 3D responsive mobile - XUỐNG DƯỚI CÙNG */
    .nav-item-3d {
        order: 999;
        width: 100%;
        margin-top: 10px;
        border-top: 1px solid rgba(212, 175, 55, 0.2);
        padding-top: 10px;
    }

    .nav-link.tour-3d {
        margin-left: 0;
        display: block;
        text-align: center;
        font-size: 0.95rem;
        width: 100%;
        border-radius: 8px;
        background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(212, 175, 55, 0.3));
        border: 1px solid rgba(212, 175, 55, 0.4);
    }

    .nav-link.tour-3d i {
        font-size: 1rem;
    }

    /* Đảm bảo các nav-item khác hiển thị trước */
    .navbar-collapse .navbar-nav .nav-item:not(.nav-item-3d) {
        order: 0;
    }

    /* Hero */
    .hero-section {
        padding: 120px 15px 60px;
        min-height: 550px;
    }

    .aurora-text {
        font-size: clamp(2rem, 8vw, 3.5rem);
        padding: 0 10px;
    }

    .hero-subtitle {
        font-size: 0.85rem;
        letter-spacing: 1.5px;
        margin-bottom: 15px;
    }

    .hero-description {
        font-size: 0.95rem;
        padding: 0 10px;
        margin-top: 15px;
    }

    /* Buttons mobile-friendly (lớn hơn để dễ nhấn) */
    .hero-buttons {
        gap: 15px;
        margin-top: 25px;
    }

    .animated-btn, .btn-outline-premium {
        padding: 14px 30px;
        font-size: 0.9rem;
        letter-spacing: 1px;
        min-width: 140px;
    }

    /* Section headers */
    .section-header {
        padding: 0 15px;
        margin-bottom: 30px;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .section-subtitle {
        font-size: 0.85rem;
        letter-spacing: 1.5px;
    }

    .section-description {
        font-size: 1rem;
        padding: 0 15px;
    }

    /* Carousel */
    .carousel-item-wrapper {
        width: 220px;
        height: 220px;
    }

    .carousel-track {
        gap: 20px;
    }

    /* About section */
    .about-section {
        padding: 60px 5%;
        flex-direction: column;
        text-align: center;
    }

    .about-left h2 {
        font-size: 2rem;
    }

    .about-left p {
        font-size: 1rem;
    }

    .about-buttons {
        justify-content: center;
    }

    .about-video-container video {
        max-width: 100%;
    }

    /* Comment slider */
    .comment-section {
        padding: 60px 15px;
        background-attachment: scroll;
    }

    .slider {
        height: 450px;
    }

    .item {
        width: 300px;
        height: 400px;
        padding: 20px;
        left: calc(50% - 150px);
    }

    .item h3 {
        font-size: 1.3rem;
    }

    .item p {
        font-size: 0.88rem;
        line-height: 1.5;
    }

    #next, #prev {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }

    #prev {
        left: 15px;
    }

    #next {
        right: 15px;
    }

    /* Footer */
    .footer-container {
        flex-direction: column;
        text-align: center;
        align-items: center;
        gap: 30px;
    }

    .footer-about {
        max-width: 100%;
    }

    .footer-about p {
        max-width: 100%;
    }

    .footer-links {
        width: 100%;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

/* Mobile rất nhỏ */
@media (max-width: 576px) {
    /* Navbar compact - TỐI ƯU */
    .site-navbar {
        padding: 6px 0;
    }

    .site-navbar .container {
        padding: 0 8px;
        flex-wrap: nowrap;
    }

    .site-name {
        font-size: 1.15rem;
        letter-spacing: 0.5px;
    }

    .navbar-toggler {
        padding: 5px 8px;
        margin-left: 8px;
    }

    .navbar-toggler-icon {
        width: 18px;
        height: 18px;
    }

    /* Hero compact */
    .hero-section {
        background-attachment: scroll;
        height: auto;
        min-height: 500px;
        padding: 100px 10px 50px;
    }

    .aurora-text {
        font-size: clamp(1.8rem, 10vw, 2.5rem);
        line-height: 1.2;
    }

    .hero-subtitle {
        font-size: 0.75rem;
        letter-spacing: 1px;
    }

    .hero-description {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    /* Buttons compact nhưng vẫn touch-friendly */
    .animated-btn, .btn-outline-premium {
        padding: 12px 24px;
        font-size: 0.85rem;
        letter-spacing: 0.5px;
        min-width: 130px;
    }

    /* Section headers compact */
    .section-header h2 {
        font-size: 1.75rem;
    }

    .section-subtitle {
        font-size: 0.75rem;
    }

    .section-description {
        font-size: 0.9rem;
    }

    /* Carousel compact */
    .infinite-carousel {
        padding: 25px 0;
        mask-image: linear-gradient(90deg, transparent 0%, black 5%, black 95%, transparent 100%);
    }

    .carousel-item-wrapper {
        width: 180px;
        height: 180px;
    }

    .carousel-track {
        gap: 15px;
        padding-left: 15px;
    }

    .carousel-overlay {
        padding: 15px;
    }

    .carousel-overlay h5 {
        font-size: 0.9rem;
        margin-bottom: 5px;
    }

    .carousel-overlay p {
        font-size: 0.75rem;
    }

    /* Cards */
    .timhieu {
        padding: 50px 3%;
    }

    .hover-card .card-body {
        padding: 15px;
    }

    .hover-card .card-title {
        font-size: 1.1rem;
    }

    .hover-card .card-text {
        font-size: 0.9rem;
    }

    .btn-outline-premium.btn-sm {
        padding: 8px 16px;
        font-size: 0.8rem;
    }

    /* About section */
    .about-section {
        padding: 50px 3%;
    }

    .about-left h2 {
        font-size: 1.75rem;
    }

    .about-left p {
        font-size: 0.95rem;
        line-height: 1.6;
    }

    .about-buttons .btn {
        padding: 12px 24px;
        font-size: 0.85rem;
    }

    /* Comment slider mobile */
    .comment-section {
        padding: 50px 10px;
    }

    .slider {
        height: 480px;
    }

    .item {
        width: 280px;
        height: 420px;
        padding: 18px;
        left: calc(50% - 140px);
    }

    .item h3 {
        font-size: 1.2rem;
        margin-bottom: 10px;
    }

    .item p {
        font-size: 0.85rem;
        line-height: 1.5;
        -webkit-line-clamp: 7;
    }

    .testimonial-header i {
        font-size: 1.2rem;
    }

    .testimonial-author strong {
        font-size: 0.95rem;
    }

    .testimonial-author p {
        font-size: 0.85rem;
    }

    #next, #prev {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }

    #prev {
        left: 10px;
    }

    #next {
        right: 10px;
    }

    /* Footer compact */
    .site-footer {
        padding: 50px 3%;
    }

    .footer-about p {
        font-size: 0.9rem;
    }

    .footer-social a {
        font-size: 18px;
        margin-right: 12px;
    }

    .footer-links h4 {
        font-size: 1.1rem;
    }

    .footer-links a {
        font-size: 0.9rem;
        margin-bottom: 10px;
    }

    .footer-bottom p {
        font-size: 0.85rem;
    }

    .back-to-top {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

/* Touch optimization cho tất cả mobile */
@media (hover: none) and (pointer: coarse) {
    /* Tăng kích thước tất cả các button để dễ tap */
    .btn, button, a.btn {
        min-height: 44px;
        padding: 12px 24px;
    }

    /* Tăng kích thước nav links */
    .site-navbar .nav-link {
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    /* Tắt hover effects, thay bằng active */
    .carousel-item-wrapper:hover,
    .hover-card:hover,
    .item:hover {
        transform: none;
    }

    .carousel-item-wrapper:active {
        transform: scale(0.98);
    }

    /* Tối ưu slider buttons cho touch */
    #next, #prev {
        min-width: 50px;
        min-height: 50px;
    }
}