/* MAIN HERO SECTION — preserves original structure, adds slider layer */
        .hero-header {
            position: relative;
            width: 100%;
            max-width: 1400px;
            height: 85vh;
            min-height: 550px;
            border-radius: 2rem;
            overflow: hidden;
            box-shadow: 0 25px 45px -12px rgba(0, 0, 0, 0.20);
            transition: all 0.2s ease;
        }

        /* SLIDER BACKGROUND CONTAINER — holds all slide images */
        .slider-container {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
        }

        /* Each slide — absolutely positioned, crossfade transition */
        .slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
            opacity: 0;
            transition: opacity 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            will-change: opacity;
        }

        /* active slide becomes visible */
        .slide.active {
            opacity: 1;
            z-index: 1;
        }

        /* overlay (preserved exactly from original) */
        .hero-header .overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(0, 20, 30, 0.7) 0%, rgba(0, 0, 0, 0.55) 100%);
            z-index: 2;
            pointer-events: none;
        }

        /* HERO CONTENT — centered, responsive, original text + button untouched */
        .hero-content-header {
            position: relative;
            z-index: 10;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            height: 100%;
            width: 100%;
            padding: 1.5rem 2rem;
            color: white;
            backdrop-filter: brightness(1) blur(0px);
            pointer-events: auto;
        }

        .hero-content-header h1 {
            font-size: clamp(2rem, 6vw, 3.8rem);
            font-weight: 700;
            letter-spacing: -0.02em;
           
            text-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
            max-width: 900px;
            line-height: 1.2;
        }

        .hero-content-header p {
            font-size: clamp(1rem, 3vw, 1.35rem);
            max-width: 700px;
            
            opacity: 0.95;
            font-weight: 500;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
            line-height: 1.5;
        }

        /* Original button style — keep fully intact, only enhance hover */
        .btn-primary-header {
            display: inline-block;
            background-color: #1a8f98;
            color: white;
            font-size: 1.1rem;
            font-weight: 600;
            padding: 0.9rem 2.2rem;
            border-radius: 50px;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 8px 18px rgba(0, 0, 0, 0.2);
            border: none;
            cursor: pointer;
            letter-spacing: 0.5px;
        }

        .btn-primary-header:hover {
            background-color: #39c1ca;
            transform: translateY(-3px);
            box-shadow: 0 15px 25px -8px rgba(0, 0, 0, 0.3);
        }

        /* DOTS NAVIGATION — bottom center, responsive, attractive */
        .dots-container {
            position: absolute;
            bottom: 1.8rem;
            left: 0;
            right: 0;
            z-index: 15;
            display: flex;
            justify-content: center;
            gap: 0.8rem;
            flex-wrap: wrap;
            padding: 0.5rem 1rem;
            pointer-events: none;
        }

        .dot {
            width: 12px;
            height: 12px;
            background-color: rgba(255, 255, 255, 0.55);
            border-radius: 50%;
            cursor: pointer;
            transition: all 0.25s ease;
            pointer-events: auto;
            backdrop-filter: blur(2px);
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
        }

        .dot.active-dot {
            background-color: #1a8f98;
            width: 28px;
            border-radius: 20px;
            box-shadow: 0 0 8px #164f53;
        }

        .dot:hover {
            background-color: #1a8f98;
            transform: scale(1.2);
        }

        /* small screen refinement: ensure text always centered & button visible */
        @media (max-width: 768px) {
            .hero-header {
                height: 75vh;
                min-height: 500px;
                border-radius: 1.2rem;
            }
            .hero-content-header {
                padding: 1rem 1.5rem;
            }
            .btn-primary-header {
                padding: 0.7rem 1.8rem;
                font-size: 0.95rem;
            }
            .dots-container {
                bottom: 1rem;
                gap: 0.6rem;
            }
            .dot {
                width: 10px;
                height: 10px;
            }
            .dot.active-dot {
                width: 24px;
            }
        }

        @media (max-width: 480px) {
            .hero-content-header h1 {
                font-size: 1.8rem;
            }
            .hero-content-header p {
                font-size: 0.95rem;
            }
            .btn-primary-header {
                font-size: 0.85rem;
                padding: 0.6rem 1.5rem;
            }
        }

        /* fade-in animation preserved (original class) */
        .fade-in {
            animation: fadeInUp 0.9s ease forwards;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(25px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* optional extra style: make sure interactive elements stay above */
        .hero-content-header a, .hero-content-header h1, .hero-content-header p {
            position: relative;
            z-index: 12;
        }

        /* accessibility: ensure smooth transition and no overflow */
        .hero-header, .slider-container, .slide {
            border-radius: inherit;
        }