* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            transition: all 0.3s ease;
        }

        :root {
            --primary-color: #2196f3;
            --secondary-color: #e91e63;
            --background: #f0f2f5;
            --card-bg: #ffffff;
            --text-color: #333;
            --shadow-color: rgba(0, 0, 0, 0.1);
            --hover-color: rgba(33, 150, 243, 0.1);
        }

        [data-theme="dark"] {
            --background: #1a1a1a;
            --card-bg: #2d2d2d;
            --text-color: #ffffff;
            --shadow-color: rgba(255, 255, 255, 0.1);
            --hover-color: rgba(33, 150, 243, 0.2);
        }

        body {
            background: var(--background);
            color: var(--text-color);
            min-height: 100vh;
            overflow-x: hidden;
        }

        .background-animation {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            opacity: 0.5;
        }

        .circle {
            position: absolute;
            border-radius: 50%;
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            animation: float 15s infinite ease-in-out;
        }

        @keyframes float {
            0%, 100% { transform: translate(0, 0) scale(1); }
            25% { transform: translate(100px, 100px) scale(1.1); }
            50% { transform: translate(200px, 0) scale(0.9); }
            75% { transform: translate(100px, -100px) scale(1.2); }
        }

        nav {
            position: fixed;
            top: 0;
            width: 100%;
            padding: 20px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            z-index: 1000;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: bold;
            color: var(--primary-color);
        }

        .theme-toggle {
            background: none;
            border: none;
            color: var(--text-color);
            cursor: pointer;
            font-size: 1.5rem;
        }

        main {
            margin-top: 100px;
            padding: 20px;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero {
            text-align: center;
            padding: 60px 20px;
            margin-bottom: 40px;
        }

        .hero h1 {
            font-size: 3rem;
            margin-bottom: 20px;
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.2rem;
            color: var(--text-color);
            opacity: 0.8;
        }

        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .skill-card {
            background: var(--card-bg);
            border-radius: 20px;
            padding: 30px;
            box-shadow: 8px 8px 16px var(--shadow-color),
                        -8px -8px 16px rgba(255, 255, 255, 0.1);
            transform: translateY(0);
            transition: transform 0.3s ease;
        }

        .skill-card:hover {
            transform: translateY(-10px);
        }

        .skill-card h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: var(--primary-color);
        }

        .skill-card ul {
            list-style: none;
        }

        .skill-card li {
            margin: 10px 0;
            display: flex;
            align-items: center;
        }

        .skill-card i {
            margin-right: 10px;
            color: var(--secondary-color);
        }

        .progress-bar {
            width: 100%;
            height: 10px;
            background: var(--hover-color);
            border-radius: 5px;
            margin-top: 5px;
            overflow: hidden;
        }

        .progress {
            height: 100%;
            background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
            width: 0;
            transition: width 1s ease;
        }

        .roadmap {
            margin-top: 60px;
            padding: 40px;
            background: var(--card-bg);
            border-radius: 20px;
            box-shadow: 8px 8px 16px var(--shadow-color),
                        -8px -8px 16px rgba(255, 255, 255, 0.1);
        }

        .roadmap h2 {
            text-align: center;
            margin-bottom: 40px;
            color: var(--primary-color);
        }

        .timeline {
            position: relative;
            padding: 20px 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            width: 2px;
            height: 100%;
            background: var(--primary-color);
        }

        .timeline-item {
            margin: 40px 0;
            position: relative;
            width: 50%;
            padding: 20px;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
        }

        .resources {
            margin-top: 60px;
        }

        .resources-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
        }

        .resource-card {
            background: var(--card-bg);
            padding: 20px;
            border-radius: 15px;
            text-align: center;
            box-shadow: 4px 4px 8px var(--shadow-color),
                        -4px -4px 8px rgba(255, 255, 255, 0.1);
        }

        .resource-card i {
            font-size: 2rem;
            color: var(--primary-color);
            margin-bottom: 15px;
        }

        footer {
            margin-top: 60px;
            padding: 40px 20px;
            text-align: center;
            background: var(--card-bg);
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2rem;
            }

            .skills-grid {
                grid-template-columns: 1fr;
            }

            .timeline::before {
                left: 20px;
            }

            .timeline-item {
                width: 100%;
                left: 0 !important;
                padding-left: 50px;
            }
        }