* {
            scroll-behavior: smooth;
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            background-color: #121212;
            color: #f5f5f5;
            padding-top: 70px;
        }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 40px;
            background-color: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            color: white;
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
        }

        .logo {
            font-size: 26px;
            font-weight: bold;
            color: #00ffff;
            text-decoration: none;
        }

        nav {
            display: flex;
        }

        nav a {
            margin-left: 20px;
            color: white;
            text-decoration: none;
            font-size: 18px;
            transition: color 0.3s ease;
        }

        nav a:hover {
            color: #00ffff;
        }

        .menu-toggle {
            display: none;
            font-size: 28px;
            cursor: pointer;
            color: white;
        }

        .sidebar {
            position: fixed;
            top: 0;
            right: -250px;
            width: 250px;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(10px);
            display: flex;
            flex-direction: column;
            padding-top: 80px;
            transition: right 0.3s ease;
            z-index: 999;
        }

        .sidebar a {
            color: white;
            padding: 15px 20px;
            text-decoration: none;
            border-bottom: 1px solid #333;
            transition: background 0.3s;
        }

        .sidebar a:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }

        .sidebar.active {
            right: 0;
        }

        @media (max-width: 768px) {
            nav {
                display: none;
            }

            .menu-toggle {
                display: block;
            }
        }

        section {
            padding: 10px 10px;
            min-height: auto;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            margin-bottom: 5px;
        }

        .image-wrapper {
            position: relative;
            width: 100%;
            max-width: 1280px;
        }

        .image-wrapper img {
            width: 90%;
            height: auto;
            border-radius: 12px;
            opacity: 0;
            transition: opacity 1s ease;
        }

        .image-wrapper img.loaded {
            opacity: 1;
        }

        .download-section {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            animation: fadeIn 1s ease forwards;
            margin-top: 5px;
            /* 10px → 5px */
        }

        .download-btn img {
            width: 200px;
            cursor: pointer;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        h3 {
            text-align: left;
            /* වම් පැත්තට align වෙනවා */
            width: 100%;
            /* heading full width */
            margin-left: 10%;
            /* left margin adjust */
            margin-top: 10px;
            /* optional, top spacing */
            color: #f5f5f5;
            /* text color */
        }

        /* Fade-in animation only */
        @keyframes fadeIn {
            from {
                opacity: 0;
            }

            to {
                opacity: 1;
            }
        }

        .fade-in {
            opacity: 0;
            animation: fadeIn 1s ease forwards;
        }

        section ul {
            text-align: left;
            margin-left: 10%;
            margin-right: 10%;
        }