:root {
            --primary-dark: #0c1a2d;
            --primary-accent: #f5a623;
            --secondary-accent: #4a90e2;
            --text-light: #f0f0f0;
            --text-gray: #b8c2cc;
            --bg-dark: #0a1520;
            --bg-card: #152238;
            --border-color: #2a3a57;
            --success-green: #2ecc71;
            --shadow: 0 6px 15px rgba(0, 0, 0, 0.4);
            --border-radius: 10px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--secondary-accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, var(--primary-accent), #ff8c00);
            color: var(--primary-dark);
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: bold;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(245, 166, 35, 0.2);
        }
        .section-padding {
            padding: 60px 0;
        }
        .text-center {
            text-align: center;
        }
        .highlight {
            color: var(--primary-accent);
            font-weight: bold;
        }
        .site-header {
            background-color: var(--primary-dark);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
            padding: 15px 0;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo a {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--text-light);
            text-transform: uppercase;
            letter-spacing: 1px;
            background: linear-gradient(45deg, var(--primary-accent), var(--secondary-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .my-logo a:hover {
            opacity: 0.9;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            color: var(--text-gray);
            font-weight: 600;
            padding: 8px 0;
            position: relative;
        }
        .main-nav a:hover, .main-nav a.active {
            color: var(--text-light);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary-accent);
            transition: width 0.3s;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: var(--text-light);
            border-radius: 2px;
            transition: var(--transition);
        }
        .mobile-nav-overlay {
            position: fixed;
            top: 0;
            left: -100%;
            width: 80%;
            height: 100vh;
            background-color: var(--primary-dark);
            z-index: 9999;
            padding: 30px;
            transition: left 0.5s ease;
            overflow-y: auto;
        }
        .mobile-nav-overlay.active {
            left: 0;
        }
        .mobile-nav-close {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 1.8rem;
            color: var(--text-light);
            cursor: pointer;
        }
        .mobile-nav ul {
            list-style: none;
            margin-top: 40px;
        }
        .mobile-nav li {
            margin-bottom: 20px;
        }
        .mobile-nav a {
            color: var(--text-gray);
            font-size: 1.2rem;
            font-weight: 600;
        }
        .overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.7);
            z-index: 9998;
        }
        .overlay.active {
            display: block;
        }
        .breadcrumb {
            background-color: var(--bg-card);
            padding: 15px 0;
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--text-gray);
        }
        .breadcrumb a:hover {
            color: var(--primary-accent);
        }
        .breadcrumb span {
            margin: 0 8px;
            color: var(--text-gray);
        }
        .hero {
            background: linear-gradient(rgba(10, 21, 32, 0.85), rgba(10, 21, 32, 0.9)), url('https://images.unsplash.com/photo-1542751371-adc38448a05e?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            padding: 80px 0;
            text-align: center;
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            background: linear-gradient(to right, #f5a623, #ff8c00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }
        .hero p {
            font-size: 1.2rem;
            color: var(--text-gray);
            max-width: 800px;
            margin: 0 auto 30px;
        }
        .search-section {
            background-color: var(--bg-card);
            padding: 30px;
            border-radius: var(--border-radius);
            margin: 40px 0;
        }
        .search-form {
            display: flex;
            max-width: 700px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 15px 20px;
            border: 2px solid var(--border-color);
            border-radius: 50px 0 0 50px;
            background-color: var(--primary-dark);
            color: var(--text-light);
            font-size: 1rem;
            outline: none;
        }
        .search-input:focus {
            border-color: var(--primary-accent);
        }
        .search-btn {
            padding: 0 30px;
            background-color: var(--primary-accent);
            color: var(--primary-dark);
            border: none;
            border-radius: 0 50px 50px 0;
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-btn:hover {
            background-color: #ff8c00;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .main-content {
            background-color: var(--bg-card);
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background-color: var(--bg-card);
            border-radius: var(--border-radius);
            padding: 25px;
            box-shadow: var(--shadow);
        }
        .sidebar-widget h3 {
            color: var(--primary-accent);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-color);
        }
        h1, h2, h3, h4 {
            margin-top: 1.5em;
            margin-bottom: 0.7em;
            line-height: 1.3;
            font-weight: 700;
        }
        h1 { font-size: 2.8rem; }
        h2 {
            font-size: 2.2rem;
            color: var(--primary-accent);
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-color);
        }
        h3 {
            font-size: 1.8rem;
            color: var(--secondary-accent);
        }
        h4 {
            font-size: 1.4rem;
            color: var(--text-light);
        }
        p, li {
            margin-bottom: 1.2em;
            font-size: 1.1rem;
            color: var(--text-gray);
        }
        ul, ol {
            padding-left: 25px;
            margin-bottom: 1.5em;
        }
        li {
            margin-bottom: 0.7em;
        }
        .code-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .code-card {
            background: linear-gradient(145deg, #1a2c47, #152238);
            border-left: 5px solid var(--success-green);
            border-radius: var(--border-radius);
            padding: 25px;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .code-card:hover {
            transform: translateY(-10px);
            border-left-color: var(--primary-accent);
        }
        .code {
            font-family: monospace;
            background-color: var(--primary-dark);
            color: var(--success-green);
            padding: 12px 15px;
            border-radius: 5px;
            font-size: 1.3rem;
            letter-spacing: 1px;
            margin: 15px 0;
            display: block;
            text-align: center;
        }
        .article-img {
            margin: 40px auto;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            max-width: 900px;
        }
        .article-img img {
            width: 100%;
            transition: transform 0.5s;
        }
        .article-img:hover img {
            transform: scale(1.03);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            padding: 10px;
            color: var(--text-gray);
            font-size: 0.95rem;
            background-color: rgba(21, 34, 56, 0.8);
        }
        .user-feedback {
            margin-top: 60px;
            background-color: var(--primary-dark);
            padding: 40px;
            border-radius: var(--border-radius);
        }
        .feedback-form {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group.full-width {
            grid-column: 1 / -1;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: var(--text-light);
            font-weight: 600;
        }
        .form-control {
            width: 100%;
            padding: 15px;
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 5px;
            color: var(--text-light);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary-accent);
        }
        .star-rating {
            direction: rtl;
            display: flex;
            justify-content: flex-end;
            gap: 5px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: var(--border-color);
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: var(--primary-accent);
        }
        .site-footer {
            background-color: var(--primary-dark);
            padding: 60px 0 30px;
            margin-top: 60px;
            border-top: 3px solid var(--border-color);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-widget h4 {
            color: var(--primary-accent);
            margin-bottom: 25px;
        }
        .footer-links {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .friend-links {
            margin-top: 30px;
            padding: 25px;
            background-color: var(--bg-card);
            border-radius: var(--border-radius);
        }
        friend-link {
            display: inline-block;
            background-color: var(--primary-dark);
            color: var(--text-light);
            padding: 10px 20px;
            margin: 0 10px 10px 0;
            border-radius: 5px;
            transition: var(--transition);
            font-weight: 600;
        }
        friend-link:hover {
            background-color: var(--primary-accent);
            color: var(--primary-dark);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid var(--border-color);
            color: var(--text-gray);
            font-size: 0.95rem;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
        }
        @media (max-width: 768px) {
            .main-nav { display: none; }
            .hamburger { display: flex; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1.1rem; }
            .feedback-form {
                grid-template-columns: 1fr;
            }
            .code-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .hero { padding: 50px 0; }
            .main-content, .sidebar-widget {
                padding: 25px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input, .search-btn {
                border-radius: 50px;
                margin-bottom: 10px;
            }
        }