/* --- CSS Variables & Reset --- */
    :root {
        --bg-color: #121212;
        --card-bg: #1e1e1e;
        --text-main: #e0e0e0;
        --text-muted: #a0a0a0;
        --accent-color: #7c4dff;
        /* Deep Purple */
        --accent-hover: #651fff;
        --link-color: #b388ff;
        --code-bg: #2d2d2d;
        --border-color: #333;
        --font-main: 'Inter', sans-serif;
        --font-mono: 'JetBrains Mono', monospace;
        --note-bg: rgba(255, 193, 7, 0.1);
        --note-border: #ffc107;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-main);
		background-image: url('https://i.postimg.cc/FF67qzK5/backgroundc.png');
		background-repeat: fill;
        background-color: var(--bg-color);
        color: var(--text-main);
        line-height: 1.6;
        padding-bottom: 3rem;
    }

    /* --- Navigation Menu --- */
    .navbar {
        position: sticky;
        top: 0;
        background: rgba(30, 30, 30, 0.95);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--border-color);
        padding: 1rem;
        z-index: 1000;
        display: flex;
        justify-content: center;
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    }

    .nav-links {
        display: flex;
        gap: 1.5rem;
        list-style: none;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-links a {
        color: var(--text-main);
        text-decoration: none;
        font-weight: 600;
        font-size: 0.95rem;
        transition: color 0.2s;
        padding: 0.5rem 0.75rem;
        border-radius: 6px;
    }

    .nav-links a:hover {
        color: var(--accent-color);
        background-color: rgba(255, 255, 255, 0.05);
    }

    /* --- Main Layout --- */
    main {
        max-width: 800px;
        margin: 2rem auto;
        padding: 0 1.5rem;
    }

    article {
        background-color: var(--card-bg);
        padding: 2.5rem;
        border-radius: 12px;
        border: 1px solid var(--border-color);
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    }

    /* --- Typography --- */
    h1 {
        font-size: 2rem;
        margin-bottom: 1rem;
        line-height: 1.2;
        color: #fff;
    }

    h2 {
        font-size: 1.5rem;
        margin-top: 2.5rem;
        margin-bottom: 1rem;
        padding-bottom: 0.5rem;
        border-bottom: 2px solid var(--border-color);
        color: #fff;
    }

    h3 {
        font-size: 1.2rem;
        margin-top: 1.5rem;
        margin-bottom: 0.75rem;
        color: var(--link-color);
    }

    p {
        margin-bottom: 1rem;
    }

    a {
        color: var(--link-color);
        text-decoration: none;
        border-bottom: 1px dotted transparent;
        transition: border-bottom 0.2s;
    }

    a:hover {
        border-bottom: 1px dotted var(--link-color);
    }

    /* --- Header & Lang Switch --- */
    header {
        margin-bottom: 2rem;
        text-align: center;
    }

    .lang-switch {
        display: inline-flex;
        align-items: center;
        background-color: #2a2a2a;
        padding: 0.5rem 1rem;
        border-radius: 50px;
        margin-top: 1rem;
        border: 1px solid var(--border-color);
    }

    .lang-flag {
        height: 20px;
        margin-right: 10px;
        border-radius: 2px;
    }

    .lang-title {
        font-size: 0.9rem;
        margin: 0;
        font-weight: 400;
    }

    .lang-title a {
        color: var(--text-main);
    }

    /* --- Components: Notes --- */
    .note {
        background-color: var(--note-bg);
        border-left: 4px solid var(--note-border);
        padding: 1.5rem;
        border-radius: 4px;
        margin: 2rem 0;
    }

    .note h2 {
        margin-top: 0;
        border-bottom: none;
        font-size: 1.25rem;
        color: var(--note-border);
    }

    /* --- Lists & Code --- */
    ul {
        margin-bottom: 1rem;
        padding-left: 1.5rem;
    }

    li {
        margin-bottom: 0.5rem;
    }

    code {
        font-family: var(--font-mono);
        background-color: var(--code-bg);
        padding: 0.2rem 0.4rem;
        border-radius: 4px;
        font-size: 0.9em;
        color: #ff80ab;
        /* Pinkish for code */
    }

    hr {
        border: 0;
        border-top: 1px solid var(--border-color);
        margin: 3rem 0;
    }

    /* --- Video Wrapper --- */
    .video-wrapper {
        position: relative;
        width: 100%;
        height: 0;
        padding-bottom: 56.25%;
        /* 16:9 Aspect Ratio */
        border-radius: 8px;
        overflow: hidden;
        background-color: #000;
        margin-top: 1rem;
        border: 1px solid var(--border-color);
    }

    .video-wrapper iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        border: none;
    }

    /* --- Mobile Tweaks --- */
    @media (max-width: 600px) {
        .navbar {
            padding: 0.5rem;
            overflow-x: auto;
            /* Allow horizontal scroll on small screens */
            justify-content: flex-start;
        }

        .nav-links {
            flex-wrap: nowrap;
            /* Keep on one line with scroll */
            gap: 1rem;
            padding: 0 0.5rem;
        }

        h1 {
            font-size: 1.5rem;
        }

        article {
            padding: 1.5rem;
        }
    }