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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg-primary);
            color: var(--neutral-800);
            line-height: 1.6;
            font-weight: 400;
        }

        /* Subtle animated background */
        .bg-grid {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0.02;
            background-image: 
                linear-gradient(var(--neutral-300) 1px, transparent 1px),
                linear-gradient(90deg, var(--neutral-300) 1px, transparent 1px);
            background-size: 50px 50px;
            pointer-events: none;
            z-index: -1;
        }

        /* Header */
        .header {
    		background-color: rgba(13, 17, 23, 0.8);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(8px);
        }

        .header-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 2rem;
        }

        .logo img {
            height: 40px;
            transition: opacity 0.2s ease;
        }

        .logo:hover img {
            opacity: 0.8;
        }

        .auth-btn {
            background: var(--gradient-primary);
            color: var(--white);
            padding: 0.6rem 1.2rem;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 500;
            font-size: 0.9rem;
            transition: all 0.2s ease;
            box-shadow: var(--shadow-sm);
        }

        .auth-btn:hover {
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
            color: var(--white);
            text-decoration: none;
        }

        /* Main Container */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 3rem 2rem;
        }

        /* Profile Hero Section */
        .profile-hero {
    		background: var(--bg-secondary);
            border-radius: 16px;
            box-shadow: var(--shadow-lg);
            overflow: hidden;
            margin-bottom: 2rem;
            position: relative;
        }

        .hero-background {
            height: 200px;
            background: var(--gradient-primary);
            position: relative;
            overflow: hidden;
        }

        .hero-background::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
            opacity: 0.3;
        }

        .profile-content {
            padding: 0 2rem 2rem;
            position: relative;
            margin-top: -80px;
        }

        .profile-avatar {
            width: 120px;
            height: 120px;
            background: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            box-shadow: var(--shadow-xl);
            font-size: 2.5rem;
            color: var(--primary-blue);
            border: 4px solid var(--white);
        }

        .profile-name {
            font-size: 2rem;
            font-weight: 700;
    		color: var(--neutral-300);
            text-align: center;
            margin-bottom: 0.5rem;
        }

        .profile-username {
            font-size: 1rem;
            color: var(--neutral-600);
            text-align: center;
            margin-bottom: 1.5rem;
            font-weight: 500;
        }

        .profile-description {
            font-size: 1rem;
            line-height: 1.7;
            color: var(--neutral-700);
            text-align: center;
            max-width: 600px;
            margin: 0 auto 2rem;
        }

        /* Social Links */
        .social-section {
            text-align: center;
            margin-bottom: 2rem;
        }

        .social-links {
            display: flex;
            justify-content: center;
            gap: 0.75rem;
            flex-wrap: wrap;
        }

        .social-link {
            background: var(--neutral-100);
            border: 1px solid var(--neutral-200);
            padding: 0.6rem 1rem;
            border-radius: 8px;
            color: var(--neutral-700);
            text-decoration: none;
            font-size: 0.85rem;
            font-weight: 500;
            transition: all 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .social-link:hover {
            background: var(--primary-blue);
            color: var(--white);
            border-color: var(--primary-blue);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
            text-decoration: none;
        }

        .social-link i {
            font-size: 0.9rem;
        }

        /* Skills Section */
        .skills-section {
    		background: var(--bg-secondary);
            border-radius: 16px;
            box-shadow: var(--shadow-lg);
            padding: 2rem;
        }

        .section-title {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--neutral-300);
            text-align: center;
            margin-bottom: 2rem;
            position: relative;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: var(--gradient-primary);
            border-radius: 2px;
        }

        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
        }

        .skill-card {
            background: var(--neutral-50);
            border: 1px solid var(--neutral-200);
            border-radius: 12px;
            padding: 1.5rem;
            text-align: center;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .skill-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient-primary);
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .skill-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-blue);
        }

        .skill-card:hover::before {
            transform: scaleX(1);
        }

        .skill-icon {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            display: block;
        }

        .skill-name {
            font-size: 1rem;
            font-weight: 600;
            color: var(--neutral-800);
            margin-bottom: 1rem;
            text-transform: capitalize;
        }

        .skill-progress {
            background: var(--neutral-200);
            height: 6px;
            border-radius: 3px;
            overflow: hidden;
            position: relative;
        }

        .progress-fill {
            height: 100%;
            border-radius: 3px;
            transition: all 0.8s ease;
            position: relative;
        }

        .progress-fill::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
            animation: shimmer 2s infinite;
        }

        @keyframes shimmer {
            0% { transform: translateX(-100%); }
            100% { transform: translateX(100%); }
        }

        .level-1 { 
            background: linear-gradient(90deg, #ef4444, #dc2626);
            width: 20%; 
        }
        .level-2 { 
            background: linear-gradient(90deg, #f97316, #ea580c);
            width: 40%; 
        }
        .level-3 { 
            background: linear-gradient(90deg, #eab308, #ca8a04);
            width: 60%; 
        }
        .level-4 { 
            background: linear-gradient(90deg, #22c55e, #16a34a);
            width: 80%; 
        }
        .level-5 { 
            background: linear-gradient(90deg, #10b981, #059669);
            width: 100%; 
        }

        /* Rating Labels */
        .skill-rating {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 0.5rem;
        }

        .rating-text {
            font-size: 0.75rem;
            color: var(--neutral-500);
            font-weight: 500;
        }

        .rating-level {
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            background: var(--neutral-100);
            color: var(--neutral-700);
        }

        /* 404 Section */
        .not-found {
            text-align: center;
            padding: 4rem 2rem;
        }

        .not-found-icon {
            font-size: 4rem;
            color: var(--neutral-400);
            margin-bottom: 1.5rem;
        }

        .not-found h1 {
            font-size: 2rem;
            font-weight: 600;
            color: var(--neutral-900);
            margin-bottom: 1rem;
        }

        .not-found p {
            font-size: 1rem;
            color: var(--neutral-600);
            max-width: 500px;
            margin: 0 auto;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .container {
                padding: 2rem 1rem;
            }
            
            .profile-content {
                padding: 0 1.5rem 1.5rem;
            }
            
            .profile-name {
                font-size: 1.75rem;
            }
            
            .skills-grid {
                grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
                gap: 1rem;
            }
            
            .social-links {
                flex-direction: column;
                align-items: center;
                max-width: 300px;
                margin: 0 auto;
            }
            
            .social-link {
                width: 100%;
                justify-content: center;
            }
            
            .header-content {
                padding: 1rem;
            }

            .hero-background {
                height: 150px;
            }

            .profile-content {
                margin-top: -60px;
            }

            .profile-avatar {
                width: 100px;
                height: 100px;
                font-size: 2rem;
            }
        }

        @media (max-width: 480px) {
            .profile-name {
                font-size: 1.5rem;
            }
            
            .skills-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Smooth entrance animations */
        .profile-hero {
            animation: slideUp 0.6s ease-out;
        }

        .skills-section {
            animation: slideUp 0.6s ease-out 0.2s both;
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .skill-card {
            animation: fadeIn 0.5s ease-out both;
        }

        .skill-card:nth-child(1) { animation-delay: 0.1s; }
        .skill-card:nth-child(2) { animation-delay: 0.2s; }
        .skill-card:nth-child(3) { animation-delay: 0.3s; }
        .skill-card:nth-child(4) { animation-delay: 0.4s; }
        .skill-card:nth-child(5) { animation-delay: 0.5s; }
        .skill-card:nth-child(6) { animation-delay: 0.6s; }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }