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

        :root {
            --bg-light: #ffffff;
            --bg-dark: #1a1a1a;
            --text-light: #000000;
            --text-dark: #ffffff;
            --border-light: #e0e0e0;
            --border-dark: #333333;
            --surface-light: #f5f5f5;
            --surface-dark: #252525;
            --accent: #000000;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
            background-color: var(--bg-light);
            color: var(--text-light);
            transition: background-color 0.3s ease, color 0.3s ease;
            line-height: 1.6;
        }

        body.dark-mode {
            --bg-light: #1a1a1a;
            --text-light: #ffffff;
            --border-light: #333333;
            --surface-light: #252525;
            --text-dark: #000000;
        }

        /* Control Panel */
        .controls {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 1000;
            display: flex;
            gap: 10px;
            flex-direction: column;
        }

        .btn-control {
            padding: 10px 15px;
            border: 1px solid var(--accent);
            background: var(--bg-light);
            color: var(--text-light);
            border-radius: 4px;
            cursor: pointer;
            font-size: 13px;
            transition: all 0.3s ease;
            font-weight: 500;
        }

        body.dark-mode .btn-control {
            background: var(--surface-light);
        }

        .btn-control:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
        }

        .language-selector {
            display: flex;
            gap: 5px;
        }

        .lang-btn {
            padding: 8px 12px;
            border: 1px solid var(--accent);
            background: var(--bg-light);
            color: var(--text-light);
            border-radius: 4px;
            cursor: pointer;
            font-size: 12px;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        body.dark-mode .lang-btn {
            background: var(--surface-light);
        }


        .lang-btn.active {
            background: var(--accent);
            color: var(--bg-light);
        }

        .lang-btn:hover {
            opacity: 0.8;
        }

        /* Header */
        header {
            background: var(--bg-light);
            padding: 60px 20px;
            text-align: center;
            border-bottom: 1px solid var(--border-light);
            transition: all 0.3s ease;
        }

        .profile-container {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-direction: column;
            gap: 25px;
            max-width: 900px;
            margin: 0 auto;
        }

        .profile-pic {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            object-fit: cover;
            border: 4px solid var(--accent);
            box-shadow: 0 8px 24px rgba(0,0,0,0.15);
            animation: slideDown 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
            transition: transform 0.3s ease;
        }

        .profile-pic:hover {
            transform: scale(1.05);
        }

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

        h1 {
            font-size: 48px;
            font-weight: 700;
            margin: 0;
            letter-spacing: -1px;
        }

        .title {
            font-size: 20px;
            color: #666;
            margin: 10px 0 20px;
            font-weight: 400;
        }

        body.dark-mode .title {
            color: #aaa;
        }

        .contact-info {
            display: flex;
            gap: 25px;
            justify-content: center;
            flex-wrap: wrap;
            font-size: 14px;
            color: #666;
        }

        body.dark-mode .contact-info {
            color: #aaa;
        }

        .contact-info a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
            border-bottom: 1px solid transparent;
        }

        .contact-info a:hover {
            border-bottom: 1px solid currentColor;
        }

        /* Main Content */
        .container {
            max-width: 900px;
            margin: 0 auto;
            padding: 50px 20px;
        }

        section {
            margin: 50px 0;
            opacity: 0;
            animation: fadeIn 0.8s ease-out forwards;
        }

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

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

        h2 {
            font-size: 26px;
            margin-bottom: 25px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent);
            font-weight: 700;
        }

        h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 5px;
        }

        .entry {
            margin: 30px 0;
            padding: 20px;
            border-left: 3px solid #999;
            background: var(--surface-light);
            transition: all 0.3s ease;
        }

        body.dark-mode .entry {
            border-left-color: #666;
        }

        .entry:hover {
            transform: translateX(8px);
            border-left-color: var(--accent);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }

        body.dark-mode .entry:hover {
            box-shadow: 0 4px 12px rgba(255,255,255,0.05);
        }

        .entry-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 5px;
        }

        .entry-subtitle {
            font-size: 15px;
            color: #777;
            margin-bottom: 8px;
            font-style: italic;
        }

        body.dark-mode .entry-subtitle {
            color: #999;
        }

        .entry-date {
            font-size: 13px;
            color: #999;
            margin-bottom: 12px;
        }

        .entry-description {
            font-size: 14px;
            line-height: 1.7;
            color: #555;
        }

        body.dark-mode .entry-description {
            color: #bbb;
        }

        .bullet-list {
            list-style: none;
            padding-left: 0;
            font-size: 14px;
            line-height: 1.8;
            color: #555;
        }

        body.dark-mode .bullet-list {
            color: #bbb;
        }

        .bullet-list li {
            position: relative;
            padding-left: 20px;
            margin: 10px 0;
        }

        .bullet-list li::before {
            content: '▪';
            position: absolute;
            left: 0;
            font-weight: bold;
        }

        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
            margin-top: 20px;
        }

        .skill-item {
            padding: 15px;
            background: var(--surface-light);
            border-radius: 4px;
            text-align: center;
            transition: all 0.3s ease;
            cursor: pointer;
            border: 1px solid transparent;
        }

        .skill-item:hover {
            transform: translateY(-4px);
            border: 1px solid var(--accent);
            box-shadow: 0 6px 16px rgba(0,0,0,0.1);
        }

        body.dark-mode .skill-item:hover {
            box-shadow: 0 6px 16px rgba(255,255,255,0.05);
        }

        .skill-item strong {
            display: block;
            margin-bottom: 5px;
            font-size: 15px;
        }

        .skill-item span {
            font-size: 13px;
            color: #777;
        }

        body.dark-mode .skill-item span {
            color: #999;
        }

        /* Goals Section */
        .goals-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 25px;
        }

        .goal-card {
            padding: 20px;
            background: var(--surface-light);
            border-radius: 4px;
            border-top: 2px solid var(--accent);
            transition: all 0.3s ease;
        }

        .goal-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }

        body.dark-mode .goal-card:hover {
            box-shadow: 0 8px 20px rgba(255,255,255,0.05);
        }

        .goal-card h3 {
            font-size: 13px;
            color: #666;
            margin-bottom: 15px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        body.dark-mode .goal-card h3 {
            color: #aaa;
        }

        .goal-card ul {
            list-style: none;
            font-size: 14px;
            color: #555;
        }

        body.dark-mode .goal-card ul {
            color: #bbb;
        }

        .goal-card li {
            padding: 8px 0 8px 20px;
            position: relative;
        }

        .goal-card li::before {
            content: '→';
            position: absolute;
            left: 0;
        }

        /* Footer */
        footer {
            text-align: center;
            padding: 40px 20px;
            border-top: 1px solid var(--border-light);
            color: #888;
            font-size: 13px;
            margin-top: 60px;
        }

        body.dark-mode footer {
            color: #999;
        }

        .hidden {
            display: none;
        }

        /* Responsive */
        @media (max-width: 768px) {
            h1 {
                font-size: 36px;
            }

            .profile-pic {
                width: 140px;
                height: 140px;
            }

            header {
                padding: 40px 20px;
            }

            h2 {
                font-size: 22px;
            }

            .contact-info {
                flex-direction: column;
                gap: 10px;
                font-size: 13px;
            }

            .controls {
                top: 10px;
                right: 10px;
                flex-direction: row;
                gap: 5px;
                flex-wrap: wrap;
                width: auto;
                max-width: calc(100% - 20px);
            }

            .btn-control {
                padding: 8px 12px;
                font-size: 11px;
            }

            .language-selector {
                gap: 3px;
            }

            .lang-btn {
                padding: 6px 10px;
                font-size: 11px;
            }
            #backToTop {
            right: 10px;
            bottom: 10px;
            width: 40px;
            height: 40px;
            font-size: 1.5em;
            }
        }

        [lang="en"] { display: none; }
        body.lang-en [lang="hu"] { display: none; }
        body.lang-en [lang="en"] { display: inline; }


        /*
         * Back to Top Button
         * Fixed position button with hover effects
         */
        #backToTop {
        position: fixed;
        right: 32px;
        bottom: 32px;
        z-index: 999;
        background: var(--accent);
        color: var(--background);
        border: none;
        border-radius: 50%;
        width: 50px;
        height: 50px;
        font-size: 2em;
        cursor: pointer;
        box-shadow: var(--shadow-hover);
        display: none;
        transition: background var(--transition), transform var(--transition);
        }
        #backToTop:hover {
        background: var(--text);
        color: var(--background);
        transform: scale(1.08);
        }