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

        :root {
            --primary-green: #00ff00;
            --dark-green: #00cc00;
            --bg-dark: #1a1a1a;
            --bg-darker: #0f0f0f;
            --card-bg: #2a2a2a;
            --text-light: #e0e0e0;
            --text-bright: #ffffff;
            --shadow-glow: rgba(0, 255, 0, 0.2);
        }

        body {
            background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
            color: var(--text-light);
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            min-height: 100vh;
            line-height: 1.6;
        }

        /* Header Section */
        header {
            background: linear-gradient(180deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
            padding: 60px 20px 40px;
            text-align: center;
        }

        .logo-container {
            display: inline-block;
            position: relative;
            margin-bottom: 20px;
        }

        h1 {
            color: var(--primary-green);
            font-size: clamp(2rem, 5vw, 3rem);
            font-weight: 700;
            letter-spacing: -0.5px;
            text-shadow: 0 0 20px var(--shadow-glow);
            margin-bottom: 10px;
            animation: pulse-glow 3s ease-in-out infinite;
        }

        @keyframes pulse-glow {
            0%, 100% { text-shadow: 0 0 20px var(--shadow-glow); }
            50% { text-shadow: 0 0 30px var(--shadow-glow), 0 0 40px var(--shadow-glow); }
        }

        .tagline {
            color: var(--text-light);
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto;
        }

        /* Ad Space Placeholder */
        .ad-space {
            background: var(--card-bg);
            border: 1px dashed rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            padding: 20px;
            margin: 30px auto;
            max-width: 728px;
            min-height: 90px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.3);
            font-size: 0.9rem;
        }

        /* Main Container */
        .main-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px 60px;
        }

        /* Category Sections */
        .category-section {
            margin-bottom: 50px;
        }

        .category-title {
            color: var(--primary-green);
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 25px;
            padding-left: 15px;
            border-left: 4px solid var(--primary-green);
            text-transform: uppercase;
            letter-spacing: 1px;
            text-align: center;
        }

        /* Tool Grid */
        .tool-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 25px;
            margin-bottom: 30px;
        }

        /* Tool Cards */
        .tool-card {
            background: var(--card-bg);
            border: 1px solid rgba(0, 255, 0, 0.1);
            border-radius: 12px;
            padding: 0;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            overflow: hidden;
            position: relative;
            text-decoration: none;
            display: block;
        }

        .tool-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--primary-green), transparent);
            transform: translateX(-100%);
            transition: transform 0.5s;
        }

        .tool-card:hover::before {
            transform: translateX(100%);
        }

        .tool-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0, 255, 0, 0.15);
            border-color: var(--primary-green);
        }

        .tool-icon {
            background: linear-gradient(135deg, rgba(0, 255, 0, 0.1) 0%, rgba(0, 255, 0, 0.05) 100%);
            padding: 30px;
            text-align: center;
            font-size: 2.5rem;
            color: var(--primary-green);
            height: 120px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* Game Logo Styles */
        .game-logo {
            width: 80px;
            height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        

        .tool-content {
            padding: 20px;
        }

        .tool-title {
            color: var(--text-bright);
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .tool-description {
            color: var(--text-light);
            font-size: 0.95rem;
            opacity: 0.8;
            line-height: 1.5;
        }

        /* Footer */
        footer {
            background: var(--bg-darker);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 40px 20px;
            text-align: center;
            margin-top: 60px;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
        }

        .footer-text {
            color: var(--text-light);
            opacity: 0.7;
            font-size: 0.9rem;
        }

        a {
            color: #66cc66; 
            text-decoration: none;
        }

        a:hover {
            text-decoration: underline;
        }

        .coffee-link {
            text-align: center;
            margin-top: 2rem;
        }

        .nav-links {
            text-align: center;
            margin-bottom: 20px;
        }

        .nav-links a {
            color: var(--primary-green);
            font-size: 1.2rem;
            margin: 0 15px;
            text-decoration: none;
            transition: color 0.3s;
        }

        .nav-links a:hover {
            color: var(--dark-green);
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .tool-grid {
                grid-template-columns: 1fr;
            }
            
            .ad-space {
                margin: 20px 10px;
            }
        }

        .about-content {
            text-align: center;
            padding: 1rem;
        }
        
        /* Accessibility */
        .tool-card:focus {
            outline: 2px solid var(--primary-green);
            outline-offset: 2px;
        }

        /* Loading Animation */
        @keyframes shimmer {
            0% { background-position: -1000px 0; }
            100% { background-position: 1000px 0; }
        }