:root {
            --primary-color: #0e7490;
            --secondary-color: #f59e0b;
            --dark-color: #1e293b;
            --light-color: #f8fafc;
            --text-muted: #64748b;
            --white: #ffffff;
            --gray-light: #e2e8f0;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: var(--dark-color);
            line-height: 1.6;
            background: var(--light-color);
        }

        /* Hero Gallery */
        .hero-gallery {
            position: relative;
            height: 550px;
            background: var(--dark-color);
            overflow: hidden;
        }

        .gallery-slide {
            display: none;
            height: 100%;
            width: 100%;
        }

        .gallery-slide.active {
            display: block;
            animation: fadeIn 0.6s ease-in;
        }

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

        .gallery-slide img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .gallery-controls {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 100%;
            display: flex;
            justify-content: space-between;
            padding: 0 30px;
            z-index: 10;
        }

        .gallery-btn {
            background: rgba(255, 255, 255, 0.85);
            border: none;
            width: 55px;
            height: 55px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            font-size: 22px;
            color: var(--primary-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }

        .gallery-btn:hover {
            background: var(--white);
            transform: scale(1.15);
        }

        .gallery-dots {
            position: absolute;
            bottom: 25px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 12px;
            z-index: 10;
        }

        .dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.5);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .dot.active {
            background: var(--secondary-color);
            width: 32px;
            border-radius: 6px;
        }

        /* Trip Header */
        .trip-header {
            padding: 40px 0;
            background: var(--white);
            border-bottom: 2px solid var(--gray-light);
        }

        .trip-title {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--dark-color);
            margin-bottom: 15px;
        }

        .trip-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            margin-bottom: 20px;
        }

        .meta-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-muted);
            font-size: 15px;
        }

        .meta-item i {
            color: var(--secondary-color);
            font-size: 18px;
        }

        /* Tabs Navigation */
        .tabs-container {
            background: var(--white);
            border-bottom: 2px solid var(--gray-light);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .tab-navigation {
            display: flex;
            gap: 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .tab-btn {
            background: none;
            border: none;
            padding: 20px 30px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            cursor: pointer;
            position: relative;
            transition: all 0.3s ease;
            white-space: nowrap;
            text-transform: uppercase;
            letter-spacing: 0.3px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .tab-btn:hover {
            color: var(--primary-color);
        }

        .tab-btn.active {
            color: var(--primary-color);
            background: rgba(14, 116, 144, 0.05);
        }

        .tab-btn.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary-color);
        }

        /* New layout structure - main wrapper with two columns */
        .tab-content-wrapper {
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: 30px;
            padding: 40px 0;
            background: var(--light-color);
        }

        .main-content {
            padding: 0 20px;
        }

        .sidebar-booking {
            padding: 0 20px;
        }

        /* Content Section */
        .content-section {
            padding: 30px;
            background: var(--white);
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--dark-color);
            margin-bottom: 25px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .overview-text {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 30px;
        }

        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .highlight-card {
            background: linear-gradient(135deg, rgba(14, 116, 144, 0.05), rgba(245, 158, 11, 0.05));
            padding: 25px;
            border-radius: 10px;
            text-align: center;
            transition: all 0.3s ease;
            border: 1px solid var(--gray-light);
        }

        .highlight-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        .highlight-card i {
            font-size: 32px;
            color: var(--primary-color);
            margin-bottom: 15px;
            display: block;
        }

        .highlight-card h4 {
            color: var(--dark-color);
            font-weight: 700;
            margin-bottom: 10px;
        }

        .highlight-card p {
            color: var(--text-muted);
            font-size: 14px;
        }

        /* Itinerary */
        .itinerary-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 20px;
        }

        .itinerary-card {
            background: var(--light-color);
            padding: 25px;
            border-radius: 12px;
            border-left: 5px solid var(--secondary-color);
        }

        .day-label {
            font-size: 12px;
            font-weight: 700;
            color: var(--secondary-color);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .itinerary-card h4 {
            color: var(--dark-color);
            font-weight: 700;
            margin-bottom: 10px;
            font-size: 1.1rem;
        }

        .itinerary-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.6;
        }

        /* Map */
        #trek-map {
            height: 400px;
            border-radius: 12px;
            margin: 25px 0;
            border: 1px solid var(--gray-light);
        }

        /* Pricing */
        .pricing-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 30px;
        }

        .price-card {
            background: var(--light-color);
            padding: 25px;
            border-radius: 12px;
            border-top: 4px solid var(--primary-color);
        }

        .price-card h4 {
            color: var(--dark-color);
            font-weight: 700;
            margin-bottom: 20px;
        }

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

        .price-list li {
            padding: 12px 0;
            display: flex;
            gap: 12px;
            color: var(--text-muted);
            border-bottom: 1px solid var(--gray-light);
            font-size: 14px;
        }

        .price-list li:last-child {
            border-bottom: none;
        }

        .price-list i {
            color: #10b981;
            font-size: 16px;
            flex-shrink: 0;
        }

        /* Gallery */
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 15px;
            margin-top: 20px;
        }

        .gallery-item {
            position: relative;
            height: 220px;
            border-radius: 10px;
            overflow: hidden;
            cursor: pointer;
        }

        .gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        /* Reviews */
        .reviews-container {
            max-width: 900px;
        }

        .review-card {
            background: var(--light-color);
            padding: 25px;
            border-radius: 12px;
            margin-bottom: 20px;
            border-left: 4px solid var(--secondary-color);
        }

        .review-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 15px;
        }

        .reviewer-info {
            display: flex;
            gap: 15px;
        }

        .reviewer-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary-color);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 20px;
        }

        .reviewer-details h5 {
            color: var(--dark-color);
            font-weight: 700;
            margin-bottom: 3px;
            font-size: 1rem;
        }

        .reviewer-details p {
            color: var(--text-muted);
            font-size: 13px;
        }

        .review-rating {
            display: flex;
            gap: 3px;
        }

        .review-rating i {
            color: var(--secondary-color);
            font-size: 16px;
        }

        .review-text {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
            margin-top: 12px;
        }

        .review-stats {
            display: flex;
            gap: 20px;
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px solid var(--gray-light);
            font-size: 13px;
        }

        .review-stats span {
            display: flex;
            align-items: center;
            gap: 5px;
            color: var(--text-muted);
            cursor: pointer;
            transition: color 0.3s ease;
        }

        .review-stats span:hover {
            color: var(--primary-color);
        }

        /* Booking sidebar styling */
        .booking-card {
            background: var(--white);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 150px;
        }

        .booking-price {
            font-size: 2rem;
            font-weight: 600;
            color: var(--primary-color);
            margin-bottom: 5px;
        }

        .booking-price-label {
            color: var(--text-muted);
            font-size: 13px;
            margin-bottom: 25px;
        }

        .booking-features {
            margin: 25px 0;
            padding: 20px;
            background: rgba(14, 116, 144, 0.05);
            border-radius: 10px;
            border-left: 3px solid var(--primary-color);
        }

        .booking-features h5 {
            color: var(--dark-color);
            font-weight: 700;
            margin-bottom: 15px;
            font-size: 0.95rem;
        }

        .feature-item {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .feature-item i {
            color: #10b981;
            font-weight: bold;
        }

        .feature-item:last-child {
            margin-bottom: 0;
        }

        .booking-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-top: 25px;
        }

        .booking-form input,
        .booking-form select,
        .booking-form textarea {
            padding: 12px 15px;
            border: 1px solid var(--gray-light);
            border-radius: 8px;
            font-size: 14px;
            font-family: inherit;
            color: var(--dark-color);
            transition: all 0.3s ease;
        }

        .booking-form input:focus,
        .booking-form select:focus,
        .booking-form textarea:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(14, 116, 144, 0.1);
        }

        .booking-form textarea {
            resize: vertical;
            min-height: 100px;
        }

        .btn-book {
            background: var(--primary-color);
            color: var(--white);
            padding: 14px;
            border: none;
            border-radius: 8px;
            font-weight: 700;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-top: 10px;
        }

        .btn-book:hover {
            background: #0a5570;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(14, 116, 144, 0.3);
        }

        .btn-inquiry {
            background: transparent;
            color: var(--primary-color);
            padding: 14px;
            border: 2px solid var(--primary-color);
            border-radius: 8px;
            font-weight: 700;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .btn-inquiry:hover {
            background: var(--primary-color);
            color: var(--white);
        }

        /* Related Trips */
        .related-trips-container {
            padding: 40px 0;
            background: var(--light-color);
        }

        .related-trips-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--dark-color);
            margin-bottom: 30px;
        }

        .related-trips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .trip-card {
            background: var(--white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .trip-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
        }

        .trip-card-image {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .trip-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .trip-card:hover .trip-card-image img {
            transform: scale(1.1);
        }

        .trip-card-badge {
            position: absolute;
            top: 15px;
            right: 15px;
            background: var(--secondary-color);
            color: var(--white);
            padding: 8px 15px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 700;
        }

        .trip-card-content {
            padding: 20px;
        }

        .trip-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark-color);
            margin-bottom: 10px;
        }

        .trip-card-meta {
            display: flex;
            justify-content: space-between;
            gap: 10px;
            margin-bottom: 15px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .trip-card-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .trip-card-meta i {
            color: var(--secondary-color);
        }

        .trip-card-price {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--primary-color);
        }

        .tab-content {
            display: none;
            animation: fadeIn 0.4s ease;
        }

        .tab-content.active {
            display: block;
        }

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

        @media (max-width: 1024px) {
            .tab-content-wrapper {
                grid-template-columns: 1fr;
                padding: 30px 0;
            }

            .sidebar-booking {
                padding: 0 20px;
            }

            .booking-card {
                position: static;
                margin-bottom: 40px;
            }
        }

        @media (max-width: 768px) {
            .hero-gallery { height: 350px; }
            .trip-title { font-size: 1.8rem; }
            .tab-btn { padding: 15px 20px; font-size: 12px; }
            .content-section { padding: 20px; }
            .pricing-grid { grid-template-columns: 1fr; }
            .itinerary-grid { grid-template-columns: 1fr; }
            .highlights-grid { grid-template-columns: 1fr; }
            #trek-map { height: 350px; }
            .trip-meta { gap: 15px; }
            .trip-title { font-size: 1.6rem; }
            .related-trips-grid { grid-template-columns: 1fr; }
        }

    /* ======================Lightbox overylay========================== */
      /* Lightbox Styles */
      #lightbox-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.85);
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
        z-index: 9999;
    }

    #lightbox-img {
        max-width: 90%;
        max-height: 80%;
        border-radius: 5px;
        margin-bottom: 10px;
    }

    #lightbox-caption {
        color: #fff;
        font-size: 16px;
        text-align: center;
        max-width: 80%;
        margin-bottom: 10px;
    }

    #lightbox-close {
        position: absolute;
        top: 20px;
        right: 30px;
        color: #fff;
        font-size: 30px;
        cursor: pointer;
    }

    #lightbox-controls {
        width: 100%;
        display: flex;
        justify-content: space-between;
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        padding: 0 20px;
    }

    #lightbox-prev, #lightbox-next {
        color: #fff;
        font-size: 50px;
        cursor: pointer;
        user-select: none;
    }