:root {
            --primary-color: #2c3e50;
            --secondary-color: #3498db;
            --accent-color: #e74c3c;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: #333;
        }
        
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 100px 0 80px;
        }
        
        .section-title {
            color: var(--primary-color);
            font-weight: 700;
            margin-bottom: 40px;
            position: relative;
            padding-bottom: 15px;
        }
        
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: var(--secondary-color);
        }
        
        .skill-badge {
            background: var(--secondary-color);
            color: white;
            padding: 8px 16px;
            border-radius: 20px;
            margin: 5px;
            display: inline-block;
            font-size: 0.9rem;
        }
        
        .project-card, .experience-card {
            border: none;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
            transition: transform 0.3s;
            height: 100%;
        }
        
        .project-card:hover, .experience-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        
        .card-header {
            background: var(--primary-color);
            color: white;
            font-weight: 600;
        }
        
        .contact-icon {
            font-size: 1.5rem;
            color: var(--secondary-color);
            margin-right: 10px;
        }
        
        footer {
            background: var(--primary-color);
            color: white;
            padding: 20px 0;
        }
        
        .btn-primary {
            background: var(--secondary-color);
            border: none;
        }
        
        .btn-primary:hover {
            background: #2980b9;
        }
        
        .achievement-item {
            padding: 15px;
            background: #f8f9fa;
            border-left: 4px solid var(--secondary-color);
            margin-bottom: 15px;
        }
        
        .profile-img {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            object-fit: cover;
            border: 5px solid white;
            box-shadow: 0 4px 10px rgba(0,0,0,0.3);
            margin-bottom: 20px;
        }