:root {
                --primary-color-light: #000;
                --secondary-color-light: #fff;
                --text-color-light: #000;
                --border-color-light: #ccc;

                --primary-color-dark: #fff;
                --secondary-color-dark: #121212;
                --text-color-dark: #f0f0f0;
                --border-color-dark: #333;
            }

            @media (prefers-color-scheme: dark) {
                :root {
                    --primary-color: var(--primary-color-dark);
                    --secondary-color: var(--secondary-color-dark);
                    --text-color: var(--text-color-dark);
                    --border-color: var(--border-color-dark);
                }
            }

            @media (prefers-color-scheme: light) {
                :root {
                    --primary-color: var(--primary-color-light);
                    --secondary-color: var(--secondary-color-light);
                    --text-color: var(--text-color-light);
                    --border-color: var(--border-color-light);
                }
            }

            body {
                font-family: 'Segoe UI', Arial, sans-serif;
                background: var(--secondary-color);
                margin: 0;
                padding: 0;
                display: flex;
                justify-content: center;
                align-items: center;
                min-height: 100vh;
                color: var(--text-color);
            }
            .app-container {
                width: 100%;
                max-width: 400px;
                background: var(--secondary-color);
                border-radius: 25px;
                box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
                overflow: hidden;
                text-align: center;
                padding: 20px;
                border: 1px solid var(--border-color);
            }
            .profile-img {
                width: 200px;
                height: 200px;
                border-radius: 50%;
                border: 4px solid var(--primary-color);
                margin: 15px auto;
            }
            h1, h2 {
                color: var(--text-color);
            }
            .bio {
                font-size: 14px;
                margin: 10px 0;
            }
            .divider {
                width: 90%;
                height: 1px;
                background: var(--border-color);
                margin: 15px auto;
            }
            .action-buttons {
                margin: 15px 0;
                display: flex;
                flex-direction: column;
                gap: 10px;
            }
            .btn {
                display: block;
                padding: 12px;
                border-radius: 12px;
                font-size: 16px;
                font-weight: bold;
                text-decoration: none;
                transition: all 0.3s ease;
                border: 2px solid var(--text-color);
                color: var(--text-color);
                background: var(--secondary-color);
            }
            .btn:hover {
                background: var(--text-color);
                color: var(--secondary-color);
            }
            .social-links {
                display: flex;
                justify-content: center;
                gap: 15px;
                margin: 15px 0;
            }
            .social-links a {
                width: 50px;
                height: 50px;
                border-radius: 50%;
                background: var(--secondary-color);
                display: flex;
                align-items: center;
                justify-content: center;
                font-size: 24px;
                color: var(--text-color);
                transition: all 0.3s ease;
                text-decoration: none;
                border: 2px solid var(--text-color);
            }
            .social-links a:hover {
                background: var(--text-color);
                color: var(--secondary-color);
            }
            .location {
                font-size: 14px;
                font-weight: bold;
            }
            .footer {
                font-size: 12px;
                margin-top: 15px;
            }