/* =========================================
   1. CÀI ĐẶT CƠ BẢN (RESET)
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}




/* =========================================
   4. PHẦN HIỂN THỊ BANNER & NỘI DUNG DƯỚI
   ========================================= */
.hero-banner {
    width: 100%;
    height: 70vh;
    position: relative;
    overflow: hidden;
}

.slide {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    opacity: 0;
    transition: opacity 1s ease;
    object-position: center 90%;
}

.slide.active {
    opacity: 1;
}

.intro-section {
    padding: 60px 20px;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.intro-section h1 {
    color: #c89c3a;
    /* Màu vàng đồng */
    font-size: 32px;
    text-transform: uppercase;
    margin-bottom: 20px;
    letter-spacing: 1.5px;
}

.intro-section p.subtitle {
    font-size: 18px;
    color: #555;
    margin-bottom: 15px;
    font-weight: 500;
}

.intro-section p.description {
    text-align: justify;
    font-size: 15px;
    color: #666;
    line-height: 1.8;
}

/* DESTINATIONS */

.destinations {
    padding: 70px 5%;
    text-align: center;
    background: #f8f8f8;
}

.destinations h2 {
    font-size: 28px;
    margin-bottom: 40px;
    color: #333;
}

.destination-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.destination-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.destination-card:hover {
    transform: translateY(-8px);
}

.destination-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.destination-info {
    padding: 15px;
}

.destination-info h3 {
    margin-bottom: 10px;
    color: #c0392b;
}


/* Activities */

.activities {
    padding: 70px 5%;
    text-align: center;
    background: #f8f8f8;
}

.activities h2 {
    font-size: 28px;
    margin-bottom: 40px;
}

/* grid */

.activity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
}

/* card */

.activity-item {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.35s ease;
    cursor: pointer;
}

/* ảnh */

.activity-item img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

/* tiêu đề */

.activity-item h3 {
    margin: 15px 0;
    font-size: 18px;
    transition: color 0.3s;
}

/* hover hiệu ứng */

.activity-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.2);
}

.activity-item:hover img {
    transform: scale(1.1);
}

.activity-item:hover h3 {
    color: #e74c3c;
}


/* GALLERY */

.gallery {
    padding: 70px 5%;
    background: #f8f8f8;
    text-align: center;
    margin-bottom: 120px;
}

.gallery h2 {
    margin-bottom: 15px;
    font-size: 28px;
}

.gallery-desc {
    max-width: 700px;
    margin: 0 auto 40px;
    color: #666;
    font-size: 16px;
    line-height: 1.6;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.gallery-grid img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-radius: 12px;
    transition: transform 0.3s;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.gallery-grid img:hover {
    transform: scale(1.05);
}


/* CTA */

/* CTA */

.cta {
    width: 100vw;
    margin-left: calc(-50vw + 50%);
    padding: 80px 20px;
    text-align: center;
    margin-top: 110px;

    background:
        linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)),
        url('../img/anh1.jpg') center/cover no-repeat;

    color: white;
}

.cta h2 {
    font-size: 32px;
    margin-bottom: 15px;
}

.cta button {
    margin-top: 20px;
    padding: 12px 25px;
    border: none;
    background: #c0392b;
    color: white;
    font-size: 16px;
    cursor: pointer;
    border-radius: 5px;
    transition: 0.3s;
}

.cta button:hover {
    background: #e74c3c;
    transform: scale(1.05);
}


/* FOOTER */

footer {
    width: 100vw;
    margin-left: calc(-50vw + 50%);
    background: #222;
    color: #ddd;
    padding: 50px 5%;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
    text-align: center;
}

.footer-col {
    text-align: center;
}

.footer-col h3 {
    margin-bottom: 15px;
    color: white;
}

.copyright {
    text-align: center;
    font-size: 14px;
    color: #aaa;
}

/*hieu ung scroll*/
html {
    scroll-behavior: smooth;
    /* Tạo hiệu ứng cuộn trang từ từ, mượt mà */
    scroll-padding-top: 80px;
    /* BÙ TRỪ: Tránh việc nội dung bị cái thanh Header cố định che mất */
}


/* Bổ sung cho trang Trải nghiệm */
.sub-banner {
    height: 400px;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
        url('../img/anhflamingovuichoi.jpg');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.sub-banner h1 {
    font-size: 3rem;
    margin-bottom: 10px;
}

.activities-detail {
    padding: 80px 10%;
}

.bg-light {
    background-color: #f9f9f9;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #333;
}

.activity-row {
    display: flex;
    align-items: center;
    gap: 50px;
    margin-bottom: 60px;
}

.activity-row.reverse {
    flex-direction: row-reverse;
}

.activity-img {
    flex: 1;
}

.activity-img img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.activity-text {
    flex: 1;
}

.activity-text h3 {
    font-size: 1.8rem;
    color: #007bff;
    margin-bottom: 20px;
}

.activity-text p {
    line-height: 1.6;
    color: #666;
    margin-bottom: 20px;
}

.check-list {
    list-style: none;
    padding: 0;
}

.check-list li::before {
    content: "✓ ";
    color: #28a745;
    font-weight: bold;
}

.check-list li {
    margin-bottom: 10px;
    color: #555;
}

.activity-grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.activity-card-v2 {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: 0.3s;
    text-align: center;
    padding-bottom: 20px;
}

.activity-card-v2:hover {
    transform: translateY(-10px);
}

.activity-card-v2 img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.activity-card-v2 h4 {
    margin: 20px 0 10px;
    color: #333;
}

.activity-card-v2 p {
    padding: 0 15px;
    font-size: 0.9rem;
    color: #777;
}

/* Responsive cho điện thoại */
@media (max-width: 768px) {

    .activity-row,
    .activity-row.reverse {
        flex-direction: column;
    }

    .sub-banner h1 {
        font-size: 2rem;
    }
}

/* video trong activity giống ảnh */

.activity-item video {
    width: 100%;
    height: 180px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

/* hover giống ảnh */

.activity-item:hover video {
    transform: scale(1.1);
}

.activity-img video {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* ===== CHỈ ANIMATE NỘI DUNG ===== */
#page-content {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.4s ease;
}

#page-content.fade-out {
    opacity: 0;
    transform: translateY(20px);
}

/* Hiệu ứng vào trang */
#page-content.fade-in {
    opacity: 1;
    transform: translateY(0);
}