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

        :root {
            --primary-color: #00d4ff;
            --secondary-color: #ff6b6b;
            --accent-color: #4ecdc4;
            --purple-accent: #9b59b6;
            --text-color: #ffffff;
            --text-secondary: #b0b0b0;
            --card-bg: rgba(255, 255, 255, 0.1);
            --card-border: rgba(255, 255, 255, 0.2);
            --shadow-color: rgba(0, 212, 255, 0.3);
            --gradient-start: #1a1a2e;
            --gradient-middle: #16213e;
            --gradient-end: #0f3460;
            --category-bg: rgba(255, 255, 255, 0.05);
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-middle) 50%, var(--gradient-end) 100%);
            min-height: 100vh;
            padding: 2rem 0;
        }

        .skills-section {
            max-width: 1400px;
            margin: 0 auto;
            padding: 4rem 2rem;
            text-align: center;
        }

        .section-title {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 700;
            margin-bottom: 1rem;
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color), var(--accent-color));
            background-clip: text;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
        }

        .section-subtitle {
            font-size: 1.2rem;
            color: var(--text-secondary);
            margin-bottom: 4rem;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .skills-container {
            display: flex;
            flex-direction: column;
            gap: 4rem;
        }

        .skill-category {
            background: var(--category-bg);
            backdrop-filter: blur(10px);
            border-radius: 30px;
            padding: 3rem 2rem;
            border: 1px solid rgba(255, 255, 255, 0.1);
            position: relative;
            overflow: hidden;
        }

        .skill-category::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color), var(--purple-accent));
            border-radius: 30px 30px 0 0;
        }

        .category-title {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            font-weight: 600;
            margin-bottom: 2rem;
            color: var(--text-color);
            position: relative;
        }

        .category-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
            border-radius: 2px;
        }

        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .skill-card {
            background: var(--card-bg);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--card-border);
            border-radius: 20px;
            padding: 2rem 1.5rem;
            text-align: center;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
            cursor: pointer;
            height: 160px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }

        .skill-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(45deg, transparent, rgba(0, 212, 255, 0.1), transparent);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .skill-card:hover::before {
            opacity: 1;
        }

        .skill-card:hover {
            transform: translateY(-8px) scale(1.03);
            box-shadow: 
                0 15px 35px rgba(0, 0, 0, 0.3),
                0 0 25px var(--shadow-color),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
            border-color: var(--primary-color);
        }

        .skill-icon {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            filter: drop-shadow(0 0 8px currentColor);
            transition: all 0.3s ease;
        }

        .skill-card:hover .skill-icon {
            transform: scale(1.15);
            filter: drop-shadow(0 0 15px currentColor);
        }

        .skill-name {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-color);
            transition: color 0.3s ease;
        }

        .skill-card:hover .skill-name {
            color: var(--primary-color);
        }

        /* Programming Languages Colors */
        .programming .skill-card:nth-child(1) .skill-icon { color: #006E90; } /* C language */
         .programming .skill-card:nth-child(2) .skill-icon { color: #00599c; } /* C++ */
        .programming .skill-card:nth-child(3) .skill-icon { color: #e34c26; } /* HTML */
        .programming .skill-card:nth-child(4) .skill-icon { color: #1572b6; } /* CSS */
        .programming .skill-card:nth-child(5) .skill-icon { color: #f7df1e; } /* JavaScript */

        /* Frameworks Colors */
        .frameworks .skill-card:nth-child(0) .skill-icon { color: #61dafb; } /* React */
        .frameworks .skill-card:nth-child(0) .skill-icon { color: #4fc08d; } /* Vue */
        .frameworks .skill-card:nth-child(0) .skill-icon { color: #dd0031; } /* Angular */
        .frameworks .skill-card:nth-child(0) .skill-icon { color: #000000; } /* Next.js */
        .frameworks .skill-card:nth-child(0) .skill-icon { color: #092e20; } /* Django */
        .frameworks .skill-card:nth-child(1) .skill-icon { color: #68217a; } /* Bootstrap */
        .frameworks .skill-card:nth-child(0) .skill-icon { color: #06b6d4; } /* Tailwind */

        /* Tools Colors */
        .tools .skill-card:nth-child(1) .skill-icon { color: #f05032; } /* Git */
        .tools .skill-card:nth-child(2) .skill-icon { color: #0D1317; } /* Github */
        .tools .skill-card:nth-child(4) .skill-icon { color: #0D1317; } /* Vercel */
        .tools .skill-card:nth-child(0) .skill-icon { color: #FE5F55; } /* GitLab */
        .tools .skill-card:nth-child(3) .skill-icon { color: #007acc; } /* VS Code */
        .tools .skill-card:nth-child(0) .skill-icon { color: #006CB7; } /* Turbo C */
        .tools .skill-card:nth-child(0) .skill-icon { color: #006CB7; } /* Code::Blocks */
        .tools .skill-card:nth-child(0) .skill-icon { color: #000000; } /* AWS */
        .tools .skill-card:nth-child(0) .skill-icon { color: #00C7B7; } /* Netlify*/
        .tools .skill-card:nth-child(5) .skill-icon { color: #0D1317; } /* Codepen */
        .tools .skill-card:nth-child(6) .skill-icon { color: #F42B03; } /* firebase */
        .tools .skill-card:nth-child(7) .skill-icon { color: #E89005; } /* leetcode */
        .tools .skill-card:nth-child(0) .skill-icon { color: #3772FF; } /* canva */
        .tools .skill-card:nth-child(8) .skill-icon { color: #2EC866; } /* leetcode */
        .tools .skill-card:nth-child(9) .skill-icon { color: #5B4638; } /* CodeChef */
        
        /* Libraries Colors */
        .libraries .skill-card:nth-child(1) .skill-icon { color: #764abc; } /* Redux */
        .libraries .skill-card:nth-child(2) .skill-icon { color: #ff6384; } /* Chart.js */
        .libraries .skill-card:nth-child(3) .skill-icon { color: #61dafb; } /* Material-UI */
        .libraries .skill-card:nth-child(4) .skill-icon { color: #ff6b6b; } /* Styled Components */
        .libraries .skill-card:nth-child(5) .skill-icon { color: #150458; } /* Framer Motion */
        .libraries .skill-card:nth-child(6) .skill-icon { color: #ff6f00; } /* Three.js */
        .libraries .skill-card:nth-child(7) .skill-icon { color: #013243; } /* Socket.io */
        .libraries .skill-card:nth-child(8) .skill-icon { color: #336791; } /* PostgreSQL */
        .libraries .skill-card:nth-child(9) .skill-icon { color: #47a248; } /* MongoDB */
        .libraries .skill-card:nth-child(10) .skill-icon { color: #e535ab; } /* GraphQL */

        /* Responsive Design */
        @media (max-width: 1024px) {
            .skills-grid {
                grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
                gap: 1.2rem;
            }
        }

        @media (max-width: 768px) {
            .skills-section {
                padding: 2rem 1rem;
            }

            .skill-category {
                padding: 2rem 1rem;
            }

            .skills-grid {
                grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
                gap: 1rem;
            }

            .skill-card {
                padding: 1.5rem 1rem;
                height: 140px;
            }

            .skill-icon {
                font-size: 2rem;
                margin-bottom: 0.8rem;
            }

            .skill-name {
                font-size: 1rem;
            }

            .skills-container {
                gap: 3rem;
            }
        }

        @media (max-width: 480px) {
            .skills-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.8rem;
            }

            .skill-card {
                padding: 1.2rem 0.8rem;
                height: 120px;
            }

            .skill-icon {
                font-size: 1.8rem;
                margin-bottom: 0.6rem;
            }

            .skill-name {
                font-size: 0.9rem;
            }
        }

        /* Loading animations */
        .skill-category {
            animation: fadeInUp 0.8s ease forwards;
            opacity: 0;
            transform: translateY(40px);
        }

        .skill-category:nth-child(1) { animation-delay: 0.1s; }
        .skill-category:nth-child(2) { animation-delay: 0.3s; }
        .skill-category:nth-child(3) { animation-delay: 0.5s; }
        .skill-category:nth-child(4) { animation-delay: 0.7s; }

        .skill-card {
            animation: slideInScale 0.6s ease forwards;
            opacity: 0;
            transform: scale(0.8) translateY(20px);
        }

        .skill-card:nth-child(1) { animation-delay: 0.1s; }
        .skill-card:nth-child(2) { animation-delay: 0.15s; }
        .skill-card:nth-child(3) { animation-delay: 0.2s; }
        .skill-card:nth-child(4) { animation-delay: 0.25s; }
        .skill-card:nth-child(5) { animation-delay: 0.3s; }
        .skill-card:nth-child(6) { animation-delay: 0.35s; }
        .skill-card:nth-child(7) { animation-delay: 0.4s; }
        .skill-card:nth-child(8) { animation-delay: 0.45s; }
        .skill-card:nth-child(9) { animation-delay: 0.5s; }
        .skill-card:nth-child(10) { animation-delay: 0.55s; }

        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes slideInScale {
            to {
                opacity: 1;
                transform: scale(1) translateY(0);
            }
        }

        /* Floating particles background effect */
        .skills-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: 
                radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 107, 107, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 40% 40%, rgba(78, 205, 196, 0.1) 0%, transparent 50%);
            pointer-events: none;
            z-index: -1;
        }

        .skills-section {
            position: relative;
        }