* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        :root {
            --primary-color: #2c3e50;
            --secondary-color: #3498db;
            --accent-color: #e74c3c;
            --light-color: #ecf0f1;
            --dark-color: #2c3e50;
            --text-color: #333;
            --light-text: #7f8c8d;
            --border-color: #e0e0e0;
            --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        
        body {
            font-family: 'Open Sans', Arial, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: #f8f9fa;
        }
        
        a {
            color: var(--secondary-color);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        
        a:hover {
            color: var(--primary-color);
        }
        
        img {
            max-width: 100%;
            height: auto;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        
        /* Header Styles */
        .top-bar {
            background-color: var(--primary-color);
            color: var(--light-color);
            padding: 8px 0;
            font-size: 0.9rem;
        }
        
        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .home-link {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .home-link img {
            width: 20px;
            height: 20px;
        }
        
        .social-links {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .social-links a {
            color: var(--light-color);
        }
        
        .header-main {
            background-color: white;
            padding: 20px 0;
            box-shadow: var(--shadow);
        }
        
        .header-content {
            display: flex;
            align-items: center;
            gap: 30px;
        }
        
        .logo {
            flex: 0 0 272px; 
        }
        
        .logo img {
            width: 100%;
            height: auto;
        }
        
        .journal-info {
            flex: 1;
        }
        
        .journal-title {
            color: var(--primary-color);
            font-size: 1.8rem;
            margin-bottom: 5px;
            line-height: 1.2;
        }
        
        .journal-subtitle {
            color: var(--light-text);
            font-size: 1rem;
        }
        
        /* Navigation */
        .main-nav {
            background-color: var(--secondary-color);
        }
        
        .nav-container {
            position: relative;
        }
        
        .nav-menu {
            list-style: none;
            display: flex;
            justify-content: space-between;
        }
        
        .nav-menu li {
            position: relative;
        }
        
        .nav-menu a {
            display: block;
            color: white;
            padding: 15px 20px;
            font-weight: 600;
            transition: background-color 0.3s ease;
        }
        
        .nav-menu a:hover,
        .nav-menu a:focus {
            background-color: rgba(0, 0, 0, 0.1);
        }
        
        .nav-menu .submenu {
            position: absolute;
            top: 100%;
            left: 0;
            background-color: var(--primary-color);
            min-width: 200px;
            box-shadow: var(--shadow);
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.3s ease;
            z-index: 1000;
        }
        
        .nav-menu li:hover .submenu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        
        .submenu li {
            width: 100%;
        }
        
        .submenu a {
            padding: 12px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .submenu a:last-child {
            border-bottom: none;
        }
        
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 10px;
        }
        
        /* Main Content Layout */
        .main-content {
            display: grid;
            grid-template-columns: 250px 1fr 250px;
            gap: 30px;
            padding: 30px 0;
        }
        
        /* Sidebar Styles */
        .sidebar {
            background-color: white;
            border-radius: 5px;
            box-shadow: var(--shadow);
            padding: 20px;
        }
        
        .sidebar-widget {
            margin-bottom: 30px;
        }
        
        .sidebar-widget:last-child {
            margin-bottom: 0;
        }
        
        .sidebar-widget h3 {
            color: var(--primary-color);
            font-size: 1.2rem;
            margin-bottom: 15px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--secondary-color);
        }
        
        .sidebar-menu {
            list-style: none;
        }
        
        .sidebar-menu li {
            margin-bottom: 5px;
        }
        
        .sidebar-menu a {
            display: block;
            padding: 8px 10px;
            background-color: #f8f9fa;
            border-left: 3px solid var(--secondary-color);
            transition: all 0.3s ease;
        }
        
        .sidebar-menu a:hover {
            background-color: #e9ecef;
        }
        
        /* Search Form */
        .search-form {
            display: flex;
        }
        
        .search-input {
            flex: 1;
            padding: 0px 0px;
            border: 1px solid var(--border-color);
            border-right: none;
            border-radius: 4px 0 0 4px;
        }
        
        .search-button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 6px 6px;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }
        
        .search-button:hover {
            background-color: var(--primary-color);
        }
        
        /* Content Area */
        .content-area {
            background-color: white;
            border-radius: 5px;
            box-shadow: var(--shadow);
            padding: 30px;
        }
        
        .page-header {
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 2px solid var(--secondary-color);
        }
        
        .page-title {
            color: var(--primary-color);
            font-size: 1.8rem;
        }
        
        .article-list {
            list-style: none;
        }
        
        .article-item {
            margin-bottom: 30px;
            padding-bottom: 30px;
            border-bottom: 1px solid var(--border-color);
        }
        
        .article-item:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }
        
        .article-title {
            color: var(--primary-color);
            margin-bottom: 10px;
            font-size: 1.3rem;
        }
        
        .article-authors {
            color: var(--light-text);
            margin-bottom: 5px;
            font-style: italic;
        }
        
        .article-meta {
            color: var(--light-text);
            font-size: 0.9rem;
            margin-bottom: 10px;
        }
        
        .article-actions {
            display: flex;
            justify-content: flex-end;
            gap: 15px;
        }
        
        .btn {
            display: inline-block;
            padding: 8px 15px;
            background-color: var(--secondary-color);
            color: white;
            border-radius: 4px;
            font-weight: 600;
            transition: background-color 0.3s ease;
        }
        
        .btn:hover {
            background-color: var(--primary-color);
            color: white;
        }
        
        .btn-outline {
            background-color: transparent;
            border: 1px solid var(--secondary-color);
            color: var(--secondary-color);
        }
        
        .btn-outline:hover {
            background-color: var(--secondary-color);
            color: white;
        }
        
        /* Footer */
        .footer {
            background-color: var(--primary-color);
            color: var(--light-color);
            padding: 30px 0;
            text-align: center;
        }
        
        /* Responsive Styles */
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 200px 1fr;
            }
            
            .sidebar-right {
                grid-column: 1 / -1;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        
        @media (max-width: 768px) {
            .top-bar .container {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
            
            .header-content {
                flex-direction: column;
                text-align: center;
            }
            
            .logo {
                flex: 0 0 200px; /* Adjust logo size for mobile */
            }
            
            .mobile-menu-toggle {
                display: block;
                position: absolute;
                right: 15px;
                top: 10px;
            }
            
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
            }
            
            .nav-menu.active {
                display: flex;
            }
            
            .nav-menu .submenu {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                box-shadow: none;
                display: none;
            }
            
            .nav-menu li:hover .submenu {
                display: block;
            }
            
            .main-content {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            
            .sidebar-right {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 576px) {
            .journal-title {
                font-size: 1.5rem;
            }
            
            .content-area {
                padding: 20px;
            }
            
            .article-actions {
                flex-direction: column;
            }
        }