:root {
        --bg-color: #121212;
        --text-color: #ffffff;
        --card-bg: #1f1f1f;
        --hover-bg: #90D1CA;
    }

    #bg-video {
        position: fixed;
        top: 0;
        left: 0;
        max-width: 100vw;
        object-fit: cover;
        z-index: -1;
        opacity: 0.2;
        pointer-events: none;
    }

    body.light-mode {
        --bg-color: #f8f9fa;
        --text-color: #212529;
        --card-bg: #ffffff;
        --hover-bg: #90D1CA;
    }

    body {
        background-color: var(--bg-color);
        color: var(--text-color);
        font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
        transition: background-color 0.3s ease, color 0.3s ease;
    }

    .container {
        min-height: 100vh;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;
        opacity: 0;
        animation: fadeIn 1s ease-in-out forwards;
    }

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

    name-profession {
        margin-bottom: 4rem;
    }

    h1 {
        font-size: 2.5rem;
        margin-bottom: 1rem;
    }

    .links a {
        display: block;
        margin: 0.5rem 0;
        padding: 0.75rem 1.5rem;
        color: var(--text-color);
        background: transparent;
        border: 1px solid #555;
        border-radius: 10px;
        transition: all 0.3s ease;
        text-decoration: none;
    }

    .links a:hover {
        background-color: rgba(144, 209, 202, 0.3);
        transform: translateY(-2px);
    }

    .theme-toggle {
        display: block;
        margin: 0.7rem 0;
        padding: 0.75rem 1.5rem;
        background-color: transparent;
        border: 1px solid #555;
        border-radius: 10px;
        color: var(--text-color);
        cursor: pointer;
        transition: background-color 0.3s;
    }

    .theme-toggle:hover {
        background-color: rgba(144, 209, 202, 0.3);
    }

    footer {
        margin-top: 1.5rem;
        font-size: 0.9rem;
        color: #aaa;
    }

    @media screen and (max-width: 1024px) {
        #bg-video {
            width: 100vw;
            height: 100vh;
        }
    }