:root {
            --accent: #ff0000;
            --accent-dark: #ff0000;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-full: 50px;
            --transition-fast: all 0.2s ease-in-out;
            --transition-smooth: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        body {
            --bg-primary: #1A1D24;
            --bg-secondary: #232730;
            --bg-nav: rgba(26, 29, 36, 0.8);
            --text-primary: #F0F2F5;
            --text-secondary: #a8b2d1;
            --border-color: rgba(255, 255, 255, 0.1);
            --shadow-color: rgba(66, 220, 163, 0.1);
        }
        body.light-theme {
            --bg-primary: #F8F9FA;
            --bg-secondary: #FFFFFF;
            --bg-nav: rgba(248, 249, 250, 0.85);
            --text-primary: #1A1D24;
            --text-secondary: #5a6178;
            --border-color: rgba(0, 0, 0, 0.1);
            --shadow-color: rgba(0, 0, 0, 0.08);
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            background: var(--bg-primary);
            color: var(--text-secondary);
            font-family: 'Cardo', serif;
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
            transition: background 0.3s, color 0.3s;
        }
        h1, h2, h3, h4, h5, h6 {
            font-family: 'Cardo', serif;
            font-weight: 600;
            line-height: 1.3;
            color: var(--text-primary);
        }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.2rem; margin-bottom: 1.5rem; }
        h3 { font-size: 1.8rem; margin-bottom: 1rem; }
        h4 { font-size: 1.4rem; }
        a { text-decoration: none; color: var(--accent); transition: var(--transition-fast); }
        a:hover { color: var(--text-primary); }
        img { max-width: 100%; height: auto; }
        .container { width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.6rem;
            padding: 0.8rem 1.8rem;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            transition: var(--transition-smooth);
            cursor: pointer;
            border: 2px solid transparent;
            font-family: 'Cardo', serif;
        }
        .btn-primary {
            background: var(--accent);
            color: #1A1D24;
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px -10px var(--accent);
        }
        .btn-secondary {
            background: transparent;
            color: var(--accent);
            border-color: var(--accent);
        }
        .btn-secondary:hover {
            background: var(--accent);
            color: #1A1D24;
            transform: translateY(-3px);
        }
        .section { padding: 6rem 0; }
        .section-title {
            position: relative;
            text-align: center;
            margin-bottom: 3.5rem;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -0.8rem;
            left: 50%;
            transform: translateX(-50%);
            width: 70px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
        }
        .navbar {
            background: var(--bg-nav);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
        }
        .navbar-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-family: 'Cardo', serif;
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .logo-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--accent);
            color: #1A1D24;
            border-radius: 50%;
            font-weight: 700;
            font-size: 1.1rem;
            transition: transform 0.3s;
        }
        .logo:hover .logo-circle { transform: rotate(15deg); }
        .nav-controls { display: flex; align-items: center; gap: 1rem; }
        .nav-menu { display: flex; list-style: none; gap: 0.5rem; }
        .nav-link {
            color: var(--text-secondary);
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            transition: var(--transition-fast);
        }
        .nav-link:hover, .nav-link.active {
            color: var(--accent-dark);
            background: var(--bg-secondary);
        }
        .nav-link i { margin-right: 0.4rem; }
        .theme-toggle {
            background: var(--bg-secondary);
            border: none;
            color: var(--text-secondary);
            cursor: pointer;
            font-size: 1.2rem;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition-fast);
        }
        .theme-toggle:hover { color: var(--accent); }
        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            cursor: pointer;
        }
        .hero {
            background: var(--bg-primary);
            color: var(--text-primary);
            padding: 6rem 0;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 800px;
            height: 800px;
            background: radial-gradient(circle, var(--accent) 0%, transparent 60%);
            transform: translate(-50%, -50%);
            opacity: 0.05;
            pointer-events: none;
        }
        .hero-container {
            display: flex;
            align-items: center;
            gap: 4rem;
            position: relative;
            z-index: 2;
        }
        .hero-content { flex: 1.2; }
        .hero-image {
            flex: 0.8;
            display: flex;
            justify-content: center;
            align-items: center;
            width: 320px;
            height: 400px; 
            aspect-ratio: 1 / 1;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent) 0%, #232730 100%);
            box-shadow: 0 8px 32px 0 rgba(66,220,163,0.18), 0 1.5px 8px 0 var(--shadow-color);
            overflow: hidden;
            transition: box-shadow 0.3s, transform 0.3s;
        }
        .hero-image:hover {
            box-shadow: 0 16px 48px 0 rgba(66,220,163,0.28), 0 3px 16px 0 var(--shadow-color);
            transform: scale(1.035) rotate(-2deg);
        }
        .profile-photo-img {
            width: 100%;
            height: 100%;
            aspect-ratio: 1 / 1;
            object-fit: cover;
            object-position: center;
            border-radius: 50%;
            box-shadow: 0 2px 12px 0 rgba(0,0,0,0.10);
            transition: filter 0.3s;
            display: block;
        }
        .hero-image:hover .profile-photo-img {
            filter: brightness(1.08) saturate(1.15);
        }
        .hero-title {
            font-size: 3.5rem;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }
        .hero-title strong { color: var(--accent); }
        .hero-subtitle {
            font-size: 1.3rem;
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            font-weight: 400;
        }
        .hero-text {
            font-size: 1.1rem;
            margin-bottom: 2.5rem;
            max-width: 550px;
            color: var(--text-secondary);
        }
        .hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; }
        /* About Section (Mission & Interests) */
        .about-grid { display: grid; grid-template-columns: 1fr; gap: 2rem; }
        .about-card {
            background: var(--bg-secondary);
            border-radius: var(--radius-md);
            padding: 2.5rem;
            box-shadow: 0 4px 12px var(--shadow-color);
            transition: var(--transition-smooth);
            border: 1px solid var(--border-color);
            height: 100%;
        }
        .about-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 24px var(--text-primary);
        }
        .card-header {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.5rem;
        }
        .card-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            background: var(--accent);
            color: #1A1D24;
        }
        .card-title { font-size: 1.6rem; margin-bottom: 0; }
        .card-text { line-height: 1.8; color: var(--text-secondary); }
        .skills { background: var(--bg-secondary); }
        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
            gap: 1.5rem;
            max-width: 800px;
            margin: 0 auto;
        }
        .skill-card {
            background: var(--bg-primary);
            border-radius: var(--radius-md);
            padding: 1.5rem 1rem;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            transition: var(--transition-smooth);
            border: 1px solid var(--border-color);
        }
        .skill-card:hover {
            transform: translateY(-5px);
            background: var(--text-secondary);
            color: #1A1D24;
        }
        .skill-card:hover .skill-icon, .skill-card:hover .skill-name { color: #1A1D24; }
        .skill-icon {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            color: var(--accent);
            transition: var(--transition-fast);
        }
        .skill-name {
            font-weight: 500;
            color: var(--text-primary);
            transition: var(--transition-fast);
        }
        .footer {
            background: var(--bg-secondary);
            color: var(--text-secondary);
            padding: 4rem 0 2rem;
            border-top: 1px solid var(--border-color);
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-col h4 {
            color: var(--text-primary);
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.5rem;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background: var(--accent);
        }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links li i { margin-right: 0.5rem; }
        .footer-links a {
            color: var(--text-secondary);
            transition: var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        .social-links {
            display: flex;
            gap: 0.8rem;
            margin-top: 1.5rem;
        }
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-primary);
            color: var(--text-secondary);
            font-size: 1.1rem;
            transition: var(--transition-smooth);
        }
        .social-links a:hover {
            background: var(--accent);
            color: #1A1D24;
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 2.5rem;
            margin-top: 2.5rem;
            border-top: 1px solid var(--border-color);
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .hero-container {
                flex-direction: column-reverse;
                text-align: center;
                gap: 2rem;
            }
            .hero-content {
                display: flex;
                flex-direction: column;
                align-items: center;
            }
            .hero-buttons { justify-content: center; }
        }
        @media (min-width: 769px) {
            .about-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            .hero-title { font-size: 2.8rem; }
            .mobile-toggle { display: block; }
            .theme-toggle { margin-right: 0.5rem; }
            .nav-menu {
                display: none;
                position: fixed;
                top: 65px;
                right: 0;
                flex-direction: column;
                background: var(--bg-secondary);
                width: 100%;
                height: calc(100vh - 65px);
                padding: 2rem;
                box-shadow: 0 8px 24px rgba(0,0,0,0.2);
                gap: 1.5rem;
            }
            .nav-menu.active { display: flex; }
        }
        @media (max-width: 576px) {
            .hero-title { font-size: 2.4rem; }
            .section { padding: 4rem 0; }
            .hero-buttons { flex-direction: column; width: 100%; max-width: 300px; }
            .btn { width: 100%; }
            .hero-image { width: 220px; height: 220px; } /* Adjusted for smaller screens */
        }
        @keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
        @keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
        .animate-on-scroll { opacity: 0; transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
        .animate-on-scroll.is-visible { opacity: 1; transform: none; }
        .slide-up { transform: translateY(30px); }