:root {
            --bg-color: #ffffff;
            --nav-bg: #ffffff;
            --text-color: #000000;
            --accent-green: #00c853;
            --hover-bg: #f5f5f5;
            --border-color: #e0e0e0;
        }

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

        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--bg-color);
            color: var(--text-color);
            height: 100vh;
            overflow-x: hidden;
        }

        /* Main Content Placeholder */
        .main-content {
            margin-left: 120px;
            padding: 40px;
            height: 200vh;
        }

        .main-content h1 {
            font-size: 3rem;
            margin-bottom: 20px;
        }

        .main-content p {
            color: #666;
            line-height: 1.6;
            max-width: 800px;
        }

        /* Vertical Navigation Bar */
        .vertical-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 120px;
            height: 100vh;
            background-color: var(--nav-bg);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            align-items: center;
            padding: 30px 0;
            border-right: 1px solid var(--border-color);
            z-index: 1000;
            box-shadow: 2px 0 10px rgba(0,0,0,0.05);
        }

        /* Logo Section - Square Shape */
        .nav-logo {
            width: 70px;
            height: 70px;
            cursor: pointer;
            background-color: #fff;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 8px;
        }

        .nav-logo img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        /* Social Media Section - Centered in Middle */
        .social-links {
            display: flex;
            flex-direction: column;
            gap: 25px;
            align-items: center;
            justify-content: center;
            flex-grow: 1;
        }

        .social-icon {
            color: var(--text-color);
            font-size: 1.4rem;
            width: 45px;
            height: 45px;
            display: flex;
            justify-content: center;
            align-items: center;
            border-radius: 50%;
            background-color: transparent;
            transition: all 0.3s ease;
            text-decoration: none;
            position: relative;
        }

        .social-icon:hover {
            color: #fff;
            background-color: var(--accent-green);
            transform: translateY(-3px);
        }

        /* Tooltip for social icons */
        .social-icon::before {
            content: attr(data-tooltip);
            position: absolute;
            left: 55px;
            background-color: var(--text-color);
            color: #fff;
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 0.85rem;
            font-weight: 600;
            white-space: nowrap;
            opacity: 0;
            transform: translateX(-10px);
            pointer-events: none;
            transition: all 0.3s ease;
        }

        .social-icon:hover::before {
            opacity: 1;
            transform: translateX(0);
        }

        /* Scroll Down Animation Section */
        .scroll-down {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            cursor: pointer;
            opacity: 0.6;
            transition: opacity 0.3s ease;
        }

        .scroll-down:hover {
            opacity: 1;
        }

        .mouse-icon {
            width: 26px;
            height: 42px;
            border: 2px solid var(--text-color);
            border-radius: 15px;
            position: relative;
        }

        .wheel {
            width: 5px;
            height: 10px;
            background-color: var(--accent-green);
            border-radius: 2px;
            position: absolute;
            top: 8px;
            left: 50%;
            transform: translateX(-50%);
            animation: scroll 1.5s infinite;
        }

        .scroll-text {
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--accent-green);
            writing-mode: vertical-rl;
            text-orientation: mixed;
            transform: rotate(180deg);
        }

        @keyframes scroll {
            0% {
                top: 8px;
                opacity: 1;
            }
            100% {
                top: 24px;
                opacity: 0;
            }
        }

        /* Responsive adjustments */
        @media (max-width: 768px) {
            .vertical-nav {
                width: 100%;
                height: 70px;
                bottom: 0;
                top: auto;
                flex-direction: row;
                padding: 0 20px;
                border-right: none;
                border-top: 1px solid var(--border-color);
            }

            .nav-logo {
                width: 50px;
                height: 50px;
                order: 1;
            }

            .social-links {
                flex-direction: row;
                gap: 15px;
                order: 2;
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }

            .scroll-down {
                display: none;
            }

            .main-content {
                margin-left: 0;
                margin-bottom: 70px;
                padding: 20px;
            }
            
            .social-icon {
                font-size: 1.2rem;
                width: 40px;
                height: 40px;
            }

            .social-icon:hover::before {
                top: -40px;
                left: 50%;
                transform: translateX(-50%);
            }
        }