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

    /* Body Styling */
    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #2c3e50, #34495e);
        color: #ecf0f1;
        line-height: 1.6;
        font-size: 16px;
        overflow-x: hidden;
        position: relative;
    }

    /* Top Floating Menu */
    .top-menu {
        position: fixed;
        top: 0;
        left: 220px;
        right: 0;
        height: 60px;
        background: rgba(44, 62, 80, 0.9);
        display: flex;
        align-items: center;
        justify-content: flex-end;
        padding: 0 20px;
        z-index: 1000;
        transition: background 0.3s ease;
    }

    .top-menu:hover {
        background: rgba(44, 62, 80, 1);
    }

    .top-menu .menu-item {
        margin-left: 20px;
        color: #bdc3c7;
        cursor: pointer;
        transition: color 0.3s ease;
    }

    .top-menu .menu-item:hover {
        color: #ecf0f1;
    }

    /* Navigation Tabs */
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: 220px;
        height: 100vh;
        background: #2c3e50;
        padding-top: 80px;
        display: flex;
        flex-direction: column;
        align-items: center;
        box-shadow: 2px 0 5px rgba(0,0,0,0.5);
        transition: width 0.3s ease;
    }

    .sidebar .tabs {
        width: 100%;
    }

    .sidebar .tab-item {
        width: 100%;
        padding: 15px 20px;
        color: #ecf0f1;
        text-align: left;
        cursor: pointer;
        transition: background 0.3s ease, color 0.3s ease;
        border-left: 4px solid transparent;
    }

    .sidebar .tab-item:hover, .sidebar .tab-item.active {
        background: #34495e;
        border-left: 4px solid #e67e22;
    }

    /* Main Content Area */
    .main-content {
        margin-left: 220px;
        padding: 80px 40px 40px 40px;
        max-width: 1200px;
        transition: margin-left 0.3s ease, padding 0.3s ease;
    }

    /* Article Styling */
    article {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 10px rgba(0,0,0,0.3);
        backdrop-filter: blur(10px);
        animation: fadeIn 1s ease-in-out;
    }

    article h2, article h3, article h4 {
        color: #f1c40f;
        margin-bottom: 10px;
        transition: color 0.3s ease;
    }

    article h2:hover, article h3:hover, article h4:hover {
        color: #e74c3c;
    }

    article p {
        margin-bottom: 15px;
        color: #ecf0f1;
    }

    article pre {
        background: #1abc9c;
        padding: 15px;
        border-radius: 5px;
        overflow: auto;
        margin-bottom: 15px;
        position: relative;
        box-shadow: inset 0 0 10px rgba(0,0,0,0.3);
    }

    article code {
        color: #2c3e50;
        font-family: 'Courier New', Courier, monospace;
    }

    /* Image Styling */
    img {
        max-width: 100%;
        height: auto;
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.3);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    img:hover {
        transform: scale(1.05);
        box-shadow: 0 8px 16px rgba(0,0,0,0.5);
    }

    /* Section Separation */
    .section {
        margin-bottom: 40px;
        padding-bottom: 20px;
        border-bottom: 1px solid rgba(236, 240, 241, 0.2);
        position: relative;
    }

    .section::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 50px;
        height: 2px;
        background: linear-gradient(to right, #e74c3c, #f1c40f);
    }

    /* Decorative Elements */
    .decorative {
        margin: 20px 0;
        text-align: center;
    }

    .decorative::before {
        content: '';
        display: inline-block;
        width: 60px;
        height: 4px;
        background: linear-gradient(90deg, #9b59b6, #8e44ad);
        margin-right: 10px;
        vertical-align: middle;
        border-radius: 2px;
    }

    /* Footer Note */
    .footer-note {
        text-align: center;
        margin-top: 40px;
        color: #95a5a6;
        font-size: 14px;
    }

    /* Responsive Design */
    @media (max-width: 1200px) {
        .main-content {
            padding: 80px 30px 30px 30px;
        }
    }

    @media (max-width: 992px) {
        .sidebar {
            width: 180px;
        }

        .top-menu {
            left: 180px;
        }

        .main-content {
            margin-left: 180px;
            padding: 80px 20px 20px 20px;
        }
    }

    @media (max-width: 768px) {
        .sidebar {
            width: 100%;
            height: auto;
            position: relative;
            padding-top: 20px;
            flex-direction: row;
        }

        .sidebar .tabs {
            flex-direction: row;
            width: 100%;
        }

        .sidebar .tab-item {
            text-align: center;
            padding: 10px;
            border-left: none;
            border-bottom: 4px solid transparent;
        }

        .sidebar .tab-item.active, .sidebar .tab-item:hover {
            border-bottom: 4px solid #e67e22;
        }

        .top-menu {
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            justify-content: center;
        }

        .main-content {
            margin: 0;
            padding: 140px 20px 20px 20px;
        }
    }

    @media (max-width: 480px) {
        .main-content {
            padding: 140px 15px 15px 15px;
        }

        article {
            padding: 15px;
        }
    }

    /* Animations */
    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }

    .animate-hover:hover {
        animation: pulse 1s infinite;
    }

    @keyframes pulse {
        0% { transform: scale(1); }
        50% { transform: scale(1.05); }
        100% { transform: scale(1); }
    }

    /* Tooltip for links */
    a {
        color: #1abc9c;
        text-decoration: none;
        position: relative;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #16a085;
    }

    a::after {
        content: attr(title);
        position: absolute;
        bottom: -20px;
        left: 0;
        background: rgba(44, 62, 80, 0.9);
        color: #ecf0f1;
        padding: 5px 10px;
        border-radius: 5px;
        opacity: 0;
        transition: opacity 0.3s ease;
        white-space: nowrap;
        font-size: 12px;
    }

    a:hover::after {
        opacity: 1;
    }

    /* Highlight Important Text */
    .highlight {
        background: rgba(230, 126, 34, 0.3);
        padding: 2px 4px;
        border-radius: 3px;
    }

    /* Button Styling */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        background: #e67e22;
        color: #fff;
        border-radius: 5px;
        transition: background 0.3s ease, transform 0.3s ease;
        text-decoration: none;
    }

    .btn:hover {
        background: #d35400;
        transform: scale(1.05);
    }

    /* Background Particle Simulation */
    .particles {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: transparent;
        z-index: -1;
        overflow: hidden;
    }

    .particles::before, .particles::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(circle, rgba(255,255,255,0.2) 1px, transparent 1px);
        background-size: 50px 50px;
        animation: moveParticles 60s linear infinite;
    }

    .particles::after {
        background-size: 30px 30px;
        animation-direction: reverse;
        opacity: 0.5;
    }

    @keyframes moveParticles {
        from { transform: translate(-50%, -50%) rotate(0deg); }
        to { transform: translate(-50%, -50%) rotate(360deg); }
    }

    /* Prompt Styling */
    .prompt {
        text-align: center;
        font-size: 18px;
        color: #f39c12;
        margin-bottom: 30px;
        animation: fadeIn 2s ease-in-out;
    }