:root {
        --primary-color: #1D3557;
        --accent-color: #FF6F61;
        --secondary-color: #A8DADC;
        --neutral-color: #F7F7F7;
        --text-color: #555555;
        --background-gradient: radial-gradient(circle, rgb(255, 87, 34), transparent);
        --font-sans: 'Montserrat', sans-serif;
        --font-serif: 'Merriweather', serif;
    }

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

    body {
        font-family: var(--font-serif);
        background: var(--neutral-color);
        color: var(--text-color);
        line-height: 1.6;
        padding: 20px;
    }

    header {
        background: var(--primary-color);
        color: white;
        padding: 40px 20px;
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    header::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: var(--background-gradient);
        opacity: 0.3;
        animation: aurora-move 15s linear infinite;
    }

    header h1 {
        font-family: var(--font-sans);
        font-size: 2.5em;
        z-index: 1;
        position: relative;
    }

    nav {
        margin-top: 20px;
    }

    nav a {
        margin: 0 15px;
        text-decoration: none;
        color: white;
        font-family: var(--font-sans);
        transition: color 0.3s ease;
    }

    nav a:hover {
        color: var(--accent-color);
    }

    main {
        max-width: 1200px;
        margin: 40px auto;
        padding: 20px;
    }

    .welcome-message {
        background: var(--secondary-color);
        padding: 20px;
        border-radius: 10px;
        text-align: center;
        margin-bottom: 30px;
    }

    .welcome-message p {
        font-family: var(--font-sans);
        font-size: 1.2em;
        color: var(--primary-color);
    }

    .section {
        margin-bottom: 40px;
    }

    .section h2 {
        font-family: var(--font-sans);
        color: var(--primary-color);
        margin-bottom: 15px;
        font-size: 2em;
    }

    .section p {
        margin-bottom: 15px;
    }

    .code-block {
        background: #2E3A49;
        color: #F0F0F0;
        padding: 20px;
        border-radius: 8px;
        overflow-x: auto;
        font-family: Consolas, monospace;
        margin-bottom: 20px;
    }

    .code-block code {
        display: block;
        white-space: pre;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 20px;
    }

    table, th, td {
        border: 1px solid #ccc;
    }

    th, td {
        padding: 10px;
        text-align: left;
    }

    .images-gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }

    .images-gallery img {
        width: 100px;
        height: 100px;
        object-fit: cover;
        border-radius: 8px;
    }

    .note {
        background: #FFF3CD;
        color: #856404;
        padding: 15px;
        border-left: 5px solid #FFEEBA;
        border-radius: 5px;
        margin-bottom: 20px;
    }

    footer {
        text-align: center;
        padding: 20px;
        background: var(--primary-color);
        color: white;
        position: relative;
    }

    footer a {
        color: var(--accent-color);
        text-decoration: none;
        margin: 0 10px;
    }

    footer a:hover {
        text-decoration: underline;
    }

    @keyframes aurora-move {
        0% { transform: translateY(0) rotate(0); }
        50% { transform: translateY(-20px) rotate(5deg); }
        100% { transform: translateY(0) rotate(0); }
    }

    @media (max-width: 1440px) {
        header h1 {
            font-size: 2em;
        }

        .images-gallery img {
            width: 80px;
            height: 80px;
        }
    }

    @media (max-width: 1200px) {
        main {
            padding: 15px;
        }

        .section h2 {
            font-size: 1.8em;
        }
    }

    @media (max-width: 1024px) {
        nav a {
            margin: 0 10px;
        }

        .images-gallery img {
            width: 70px;
            height: 70px;
        }
    }

    @media (max-width: 768px) {
        header {
            padding: 30px 10px;
        }

        header h1 {
            font-size: 1.8em;
        }

        .welcome-message p {
            font-size: 1em;
        }

        .images-gallery img {
            width: 60px;
            height: 60px;
        }
    }

    @media (max-width: 480px) {
        nav {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        nav a {
            margin: 5px 0;
        }

        .images-gallery {
            justify-content: center;
        }
    }

    @media (max-width: 320px) {
        header h1 {
            font-size: 1.5em;
        }

        .section h2 {
            font-size: 1.5em;
        }

        .welcome-message p {
            font-size: 0.9em;
        }

        .images-gallery img {
            width: 50px;
            height: 50px;
        }
    }