:root {
            --primary: #FFD700; /* Gold/Yellow */
            --primary-dark: #FFB700;
            --secondary: #000000; /* Black */
            --light: #FFFFFF;
            --dark: #121212;
            --gray: #2D2D2D;
            --light-gray: #F5F5F5;
            --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            --transition: all 0.3s ease;
            --radius: 12px;
            --header-height: 80px;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--light);
            color: var(--secondary);
            line-height: 1.6;
            transition: var(--transition);
        }
        
        body.dark-theme {
            background-color: var(--dark);
            color: var(--light);
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* Header Styles */
        header {
            background-color: var(--secondary);
            color: var(--light);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            height: var(--header-height);
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .logo-icon {
            font-size: 1.8rem;
            background: var(--primary);
            color: var(--secondary);
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .logo h1 {
            font-weight: 800;
            font-size: 1.8rem;
        }
        
        .logo span {
            color: var(--primary);
        }
        
        nav {
            flex: 1;
            display: flex;
            justify-content: flex-end;
        }
        
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        
        .nav-item {
            position: relative;
        }
        
        .nav-link {
            color: var(--light);
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            position: relative;
            padding: 8px 12px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .nav-link:hover, .nav-link.active {
            background: var(--primary);
            color: var(--secondary);
        }
        
        .mobile-toggle {
            display: none;
            background: var(--primary);
            color: var(--secondary);
            border: none;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .mobile-toggle:hover {
            transform: scale(1.05);
        }
        
        /* Theme Toggle */
        .theme-toggle {
            background: var(--primary);
            color: var(--secondary);
            border: none;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            font-size: 1.3rem;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .theme-toggle:hover {
            transform: rotate(15deg);
        }
        
        /* Hero Section */
        .hero {
            padding: 5rem 0 3rem;
            text-align: center;
            background: linear-gradient(135deg, var(--secondary) 0%, #333 100%);
            color: var(--light);
            position: relative;
            overflow: hidden;
        }
        
        .hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="%23FFD700" opacity="0.05"/></svg>');
            background-size: 50px 50px;
            opacity: 0.3;
        }
        
        .hero h2 {
            font-weight: 800;
            font-size: 3rem;
            margin-bottom: 1rem;
            line-height: 1.2;
            position: relative;
            z-index: 2;
        }
        
        .hero h2 span {
            color: var(--primary);
        }
        
        .hero p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 2rem;
            opacity: 0.9;
            position: relative;
            z-index: 2;
        }
        
        .search-container {
            max-width: 700px;
            margin: 0 auto 3rem;
            position: relative;
            z-index: 2;
        }
        
        .search-container input {
            width: 100%;
            padding: 1.2rem 1.5rem;
            padding-left: 3.5rem;
            border: 2px solid var(--primary);
            border-radius: 50px;
            font-size: 1.1rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
            transition: var(--transition);
            background: rgba(255, 255, 255, 0.1);
            color: var(--light);
        }
        
        .search-container input:focus {
            outline: none;
            background: rgba(255, 255, 255, 0.15);
            box-shadow: 0 5px 25px rgba(255, 215, 0, 0.3);
        }
        
        .search-container input::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }
        
        .search-container i {
            position: absolute;
            left: 1.5rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--primary);
            font-size: 1.3rem;
        }
        
        .stats {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-top: 1.5rem;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }
        
        .stat-box {
            background: rgba(255, 215, 0, 0.1);
            padding: 1.5rem 2rem;
            border-radius: var(--radius);
            box-shadow: var(--card-shadow);
            display: flex;
            align-items: center;
            gap: 1.5rem;
            border: 2px solid var(--primary);
            backdrop-filter: blur(5px);
        }
        
        .stat-box i {
            font-size: 2rem;
            color: var(--primary);
        }
        
        .stat-box .number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
        }
        
        .stat-box .label {
            font-size: 1rem;
            color: var(--light);
            opacity: 0.9;
        }
        
        /* Categories Section */
        .categories {
            padding: 4rem 0;
            background: var(--light-gray);
        }
        
        .dark-theme .categories {
            background: var(--gray);
        }
        
        .section-title {
            font-weight: 800;
            font-size: 2.2rem;
            text-align: center;
            margin: 0 auto 3rem;
            color: var(--secondary);
            position: relative;
            display: inline-block;
        }
        
        .dark-theme .section-title {
            color: var(--light);
        }
        
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 5px;
            background: var(--primary);
            border-radius: 3px;
        }
        
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 2rem;
        }
        
        .category-card {
            background: var(--light);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
            border: 3px solid transparent;
            text-align: center;
            padding: 2rem 1.5rem;
        }
        
        .dark-theme .category-card {
            background: var(--dark);
            border: 3px solid var(--gray);
        }
        
        .category-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
            border-color: var(--primary);
        }
        
        .category-icon {
            width: 80px;
            height: 80px;
            background: rgba(255, 215, 0, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            font-size: 2rem;
            color: var(--primary);
        }
        
        .category-card h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: var(--secondary);
        }
        
        .dark-theme .category-card h3 {
            color: var(--light);
        }
        
        .category-card p {
            color: var(--secondary);
            margin-bottom: 1.5rem;
            opacity: 0.8;
        }
        
        .dark-theme .category-card p {
            color: var(--light);
        }
        
        .tools-btn {
            display: inline-block;
            background: var(--primary);
            color: var(--secondary);
            padding: 0.8rem 1.8rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            font-size: 1rem;
            text-align: center;
            border: 2px solid var(--primary);
        }
        
        .tools-btn:hover {
            background: transparent;
            color: var(--primary);
            transform: scale(1.05);
        }
        
        .dark-theme .tools-btn:hover {
            color: var(--primary);
        }
        
        /* Tools Section */
        .tools {
            padding: 4rem 0;
        }
        
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 2rem;
        }
        
        .tool-card {
            background: var(--light);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
            border: 2px solid var(--light-gray);
        }
        
        .dark-theme .tool-card {
            background: var(--dark);
            border: 2px solid var(--gray);
        }
        
        .tool-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
            border-color: var(--primary);
        }
        
        .tool-card-header {
            padding: 1.5rem;
            background: var(--secondary);
            color: var(--light);
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        
        .tool-card-header i {
            font-size: 1.5rem;
            color: var(--primary);
        }
        
        .tool-card-header h3 {
            font-size: 1.3rem;
        }
        
        .tool-card-body {
            padding: 1.5rem;
        }
        
        .tool-card-body p {
            color: var(--secondary);
            margin-bottom: 1.5rem;
        }
        
        .dark-theme .tool-card-body p {
            color: var(--light);
        }
        
        .tool-card-footer {
            padding: 0 1.5rem 1.5rem;
        }
        
        /* Footer */
        footer {
            background: var(--secondary);
            color: var(--light);
            padding: 4rem 0 2rem;
            margin-top: 3rem;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }
        
        .footer-col h4 {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.8rem;
        }
        
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--primary);
        }
        
        .footer-col ul {
            list-style: none;
        }
        
        .footer-col ul li {
            margin-bottom: 0.8rem;
        }
        
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: var(--transition);
            display: block;
            padding: 5px 0;
        }
        
        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 5px;
        }
        
        .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 1rem;
        }
        
        .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            color: var(--light);
            transition: var(--transition);
        }
        
        .social-links a:hover {
            background: var(--primary);
            color: var(--secondary);
            transform: translateY(-3px);
        }
        
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
        }
        
        /* Responsive Design */
        @media (max-width: 992px) {
            .header-content {
                height: auto;
                padding: 15px 0;
            }
            
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                margin-top: 1rem;
            }
            
            .nav-menu.show {
                display: flex;
            }
            
            .mobile-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            
            .hero h2 {
                font-size: 2.2rem;
            }
            
            .stats {
                gap: 1rem;
            }
            
            .stat-box {
                padding: 1rem 1.5rem;
            }
        }
        
        @media (max-width: 768px) {
            .hero {
                padding: 3rem 0 2rem;
            }
            
            .hero h2 {
                font-size: 1.8rem;
            }
            
            .hero p {
                font-size: 1rem;
            }
            
            .stat-box {
                width: 100%;
                max-width: 300px;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
        }
        
        @media (max-width: 480px) {
            .logo h1 {
                font-size: 1.5rem;
            }
            
            .theme-toggle {
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
            
            .stat-box .number {
                font-size: 1.5rem;
            }
            
            .stat-box .label {
                font-size: 0.9rem;
            }
        }