:root {
            --bg-color: #ffffff;
            --text-color: #2c2c2c;
            --text-secondary: #666;
            --text-tertiary: #999;
            --text-light: #ccc;
            --border-color: #f0f0f0;
            --card-bg: #fafafa;
            --nav-bg: rgba(255, 255, 255, 0.9);
            --lightbox-bg: rgba(0, 0, 0, 0.9);
            --button-bg: #000;
            --button-text: #fff;
            --button-hover: #333;
        }

        [data-theme="dark"] {
            --bg-color: #0f0f0f;
            --text-color: #ffffff;
            --text-secondary: #b3b3b3;
            --text-tertiary: #808080;
            --text-light: #666666;
            --border-color: #2a2a2a;
            --card-bg: #1a1a1a;
            --nav-bg: rgba(15, 15, 15, 0.9);
            --lightbox-bg: rgba(0, 0, 0, 0.95);
            --button-bg: #ffffff;
            --button-text: #000000;
            --button-hover: #e0e0e0;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: var(--bg-color);
            font-weight: 300;
            transition: background-color 0.3s ease, color 0.3s ease;
        }

        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 40px;
        }

        /* Logo transparency when nav is visible */
        .logo {
            position: fixed;
            top: 40px;
            left: 40px;
            z-index: 999;
            width: 50px;
            height: 50px;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .logo:hover {
            opacity: 1;
            transform: scale(1.1);
        }

        .logo svg {
            width: 100%;
            height: 100%;
            transition: all 0.3s ease;
        }

        .logo .light-logo {
            display: block;
        }

        .logo .dark-logo {
            display: none;
        }

        [data-theme="dark"] .logo .light-logo {
            display: none;
        }

        [data-theme="dark"] .logo .dark-logo {
            display: block;
        }

        /* Theme Toggle Button */
        .theme-toggle {
            position: fixed;
            top: 40px;
            right: 40px;
            z-index: 2000;
            background: var(--button-bg);
            border: 1px solid var(--border-color);
            border-radius: 50%;
            width: 50px;
            height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
        }

        .theme-toggle:hover {
            background: var(--button-hover);
            transform: scale(1.1);
        }

        .theme-toggle svg {
            width: 20px;
            height: 20px;
            fill: var(--button-text);
            transition: all 0.3s ease;
        }

        .theme-toggle .sun-icon {
            display: none;
        }

        [data-theme="dark"] .theme-toggle .sun-icon {
            display: block;
        }

        [data-theme="dark"] .theme-toggle .moon-icon {
            display: none;
        }

        /* Header */
        header {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--bg-color);
            position: relative;
        }

        .hero {
            max-width: 600px;
        }

        .hero h1 {
            font-size: 4rem;
            font-weight: 200;
            letter-spacing: -2px;
            margin-bottom: 20px;
            color: var(--text-color);
        }

        .hero .subtitle {
            font-size: 1.4rem;
            color: var(--text-secondary);
            margin-bottom: 30px;
            font-weight: 300;
        }

        .hero .company {
            font-size: 1.1rem;
            color: var(--text-tertiary);
            margin-bottom: 30px;
            font-weight: 300;
        }

        .hero .location {
            font-size: 1rem;
            color: var(--text-tertiary);
            font-weight: 300;
        }

        .scroll-indicator {
            position: absolute;
            bottom: 40px;
            left: 50%;
            transform: translateX(-50%);
            color: var(--text-light);
            font-size: 0.9rem;
            animation: bounce 2s infinite;
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
            40% { transform: translateX(-50%) translateY(-10px); }
            60% { transform: translateX(-50%) translateY(-5px); }
        }

        /* Navigation */
        nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: var(--nav-bg);
            backdrop-filter: blur(20px);
            z-index: 1000;
            padding: 20px 0;
            transition: all 0.3s ease;
            opacity: 0;
        }

        nav.visible {
            opacity: 1;
        }

        nav .container {
            display: flex;
            justify-content: center;
        }

        nav ul {
            list-style: none;
            display: flex;
            gap: 40px;
        }

        nav a {
            text-decoration: none;
            color: var(--text-secondary);
            font-weight: 400;
            font-size: 0.95rem;
            transition: color 0.3s ease;
            position: relative;
        }

        nav a:hover {
            color: var(--text-color);
        }

        nav a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 1px;
            background: var(--text-color);
            transition: width 0.3s ease;
        }

        nav a:hover::after {
            width: 100%;
        }

        /* Sections */
        section {
            padding: 120px 0;
        }

        .section-title {
            font-size: 2.5rem;
            font-weight: 200;
            text-align: center;
            margin-bottom: 80px;
            color: var(--text-color);
            letter-spacing: -1px;
        }

        /* About */
        .about-content {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .about-text {
            font-size: 1.3rem;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 60px;
            font-weight: 300;
        }

        .stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 60px;
            margin: 80px 0;
        }

        .stat {
            text-align: center;
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 100;
            color: var(--text-color);
            display: block;
            margin-bottom: 10px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--text-tertiary);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* Education & Experience */
        .content-card {
            max-width: 800px;
            margin: 0 auto;
            padding: 60px;
            background: var(--card-bg);
            border-radius: 4px;
            border-left: 3px solid var(--text-color);
        }

        .content-card h3 {
            font-size: 1.8rem;
            font-weight: 400;
            margin-bottom: 20px;
            color: var(--text-color);
        }

        .content-card .meta {
            color: var(--text-secondary);
            margin-bottom: 30px;
            font-size: 1.1rem;
        }

        .content-card ul {
            list-style: none;
            margin-top: 30px;
        }

        .content-card li {
            padding: 8px 0;
            color: var(--text-secondary);
            position: relative;
            padding-left: 20px;
        }

        .content-card li::before {
            content: '—';
            position: absolute;
            left: 0;
            color: var(--text-light);
        }

        /* Skills */
        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 60px;
            max-width: 900px;
            margin: 0 auto;
        }

        .skill-category {
            text-align: center;
        }

        .skill-category h4 {
            font-size: 1.3rem;
            font-weight: 400;
            margin-bottom: 25px;
            color: var(--text-color);
        }

        .skill-list {
            color: var(--text-secondary);
            font-size: 1.1rem;
            line-height: 1.8;
        }

        /* Certificates */
        .certificates-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
            margin: 60px 0;
        }

        .certificate-item {
            text-align: center;
            padding: 40px 30px;
            background: var(--card-bg);
            border-radius: 8px;
            border: 1px solid var(--border-color);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .certificate-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }

        .certificate-item h4 {
            font-size: 1.3rem;
            font-weight: 400;
            margin-bottom: 15px;
            color: var(--text-color);
        }

        .certificate-issuer {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-bottom: 10px;
            font-weight: 400;
        }

        .certificate-date {
            color: var(--text-tertiary);
            font-size: 0.9rem;
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .certificate-item p {
            color: var(--text-secondary);
            line-height: 1.6;
            font-size: 0.95rem;
        }

        /* Clients & Partners - Static Grid Alternative */
        .clients-section {
            padding: 80px 0;
            background: var(--card-bg);
        }

        .clients-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto;
            align-items: center;
        }

        .client-item {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 50px 30px;
            transition: all 0.3s ease;
            min-height: 180px;
        }

        .client-item:hover {
            transform: translateY(-5px);
        }

        .client-logo {
            max-width: 280px;
            max-height: 120px;
            width: auto;
            height: auto;
            object-fit: contain;
            filter: grayscale(100%) opacity(0.7);
            transition: all 0.3s ease;
        }

        .client-item:hover .client-logo {
            filter: grayscale(0%) opacity(1);
            transform: scale(1.1);
        }

        /* Dark mode logo adjustments */
        [data-theme="dark"] .client-logo {
            filter: grayscale(100%) opacity(0.5) brightness(1.3);
        }

        [data-theme="dark"] .client-item:hover .client-logo {
            filter: grayscale(0%) opacity(0.9) brightness(1);
        }

        /* Mobile responsiveness */
        @media (max-width: 768px) {
            .clients-grid {
                grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
                gap: 25px;
            }
            
            .client-item {
                padding: 30px 15px;
                min-height: 130px;
            }
            
            .client-logo {
                max-width: 200px;
                max-height: 80px;
            }
        }

        /* Tablet responsiveness */
        @media (max-width: 1024px) and (min-width: 769px) {
            .clients-grid {
                grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
                gap: 35px;
            }
            
            .client-item {
                padding: 40px 25px;
                min-height: 160px;
            }
            
            .client-logo {
                max-width: 240px;
                max-height: 100px;
            }
        }

        /* Small mobile responsiveness */
        @media (max-width: 480px) {
            .clients-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                padding: 0 20px;
            }
            
            .client-item {
                padding: 25px 15px;
                min-height: 110px;
            }
            
            .client-logo {
                max-width: 180px;
                max-height: 70px;
            }
        }

        /* Projects */
        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 80px;
            margin: 80px 0;
        }

        .project {
            text-align: center;
            cursor: pointer;
            transition: transform 0.3s ease;
        }

        .project:hover {
            transform: translateY(-5px);
        }

        .project-image {
            width: 100%;
            aspect-ratio: 16/9;
            background: var(--card-bg);
            border-radius: 8px;
            margin-bottom: 30px;
            overflow: hidden;
            position: relative;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

        .project:hover .project-image {
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }        

        .project-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
            cursor: pointer;
        }

        .project-image img:hover {
            transform: scale(1.05);
        }

        .project-image-placeholder {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            font-size: 2.5rem;
            background: linear-gradient(135deg, var(--card-bg), var(--border-color));
        }

        .project h4 {
            font-size: 1.4rem;
            font-weight: 400;
            margin-bottom: 20px;
            color: var(--text-color);
        }

        .project p {
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 1.05rem;
        }

        .view-project {
            display: inline-block;
            margin-top: 20px;
            padding: 8px 20px;
            background: transparent;
            border: 1px solid var(--border-color);
            border-radius: 25px;
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }

        .view-project:hover {
            background: var(--button-bg);
            color: var(--button-text);
            border-color: var(--button-bg);
        }

        /* Project Pages */
        .project-page {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--bg-color);
            z-index: 3000;
            overflow-y: auto;
            transform: translateX(100%);
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.5s ease;
            opacity: 0;
            visibility: hidden;
        }

        .project-page.active {
            transform: translateX(0);
            opacity: 1;
            visibility: visible;
        }

        .project-page.closing {
            transform: translateX(100%);
            opacity: 0;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.5s ease;
        }

        .project-header {
            padding: 100px 0 60px;
            text-align: center;
            border-bottom: 1px solid var(--border-color);
        }

        .back-button {
            position: fixed;
            top: 40px;
            left: 110px; /* Positioned to avoid logo overlap */
            background: none;
            border: 1px solid var(--border-color);
            border-radius: 25px;
            padding: 10px 20px;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 0.9rem;
            z-index: 3001;
        }

        .back-button:hover {
            background: var(--button-bg);
            color: var(--button-text);
            border-color: var(--button-bg);
        }

        .project-title {
            font-size: 3rem;
            font-weight: 200;
            color: var(--text-color);
            margin-bottom: 20px;
            letter-spacing: -1px;
        }

        .project-subtitle {
            font-size: 1.3rem;
            color: var(--text-secondary);
            font-weight: 300;
        }

        .project-content {
            padding: 80px 0;
        }

        .project-overview {
            max-width: 800px;
            margin: 0 auto 80px;
            text-align: center;
        }

        .project-description {
            font-size: 1.4rem;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 40px;
            font-weight: 300;
        }

        .project-details {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin: 60px 0;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .project-detail {
            text-align: center;
        }

        .project-detail-label {
            font-size: 0.9rem;
            color: var(--text-tertiary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 10px;
        }

        .project-detail-value {
            font-size: 1.2rem;
            color: var(--text-color);
            font-weight: 400;
        }

        .project-gallery {
            margin: 80px 0;
        }

        .gallery-title {
            text-align: center;
            font-size: 2rem;
            font-weight: 200;
            color: var(--text-color);
            margin-bottom: 60px;
        }

        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .gallery-item {
            background: var(--card-bg);
            border-radius: 8px;
            overflow: hidden;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid var(--border-color);
        }

        .gallery-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }

        .gallery-image {
            width: 100%;
            aspect-ratio: 16/9;
            background: var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            font-size: 2rem;
            position: relative;
            overflow: hidden;
        }

        .gallery-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .gallery-item:hover .gallery-image img {
            transform: scale(1.05);
        }

        .gallery-caption {
            padding: 20px;
            text-align: center;
            background: var(--bg-color);
        }

        .gallery-caption h4 {
            font-size: 1.1rem;
            font-weight: 400;
            color: var(--text-color);
            margin-bottom: 5px;
        }

        .gallery-caption p {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .project-features {
            background: var(--card-bg);
            padding: 80px 0;
            margin: 80px 0;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            max-width: 900px;
            margin: 0 auto;
        }

        .feature-item {
            text-align: center;
            padding: 30px;
            background: var(--bg-color);
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .feature-title {
            font-size: 1.2rem;
            font-weight: 400;
            color: var(--text-color);
            margin-bottom: 10px;
        }

        .feature-description {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* Image Lightbox */
        .image-lightbox {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--lightbox-bg);
            backdrop-filter: blur(10px);
            z-index: 4000;
            display: none;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
            cursor: pointer;
        }

        .image-lightbox.active {
            opacity: 1 !important;
            visibility: visible !important;
        }

        .lightbox-content {
            position: relative;
            max-width: 90%;
            max-height: 90%;
            animation: lightboxZoom 0.3s ease;
            cursor: default;
        }

        @keyframes lightboxZoom {
            from {
                transform: scale(0.8);
                opacity: 0;
            }
            to {
                transform: scale(1);
                opacity: 1;
            }
        }

        .lightbox-image {
            max-width: 100%;
            max-height: 90vh;
            border-radius: 8px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.5);
            display: block;
        }

        .lightbox-caption {
            text-align: center;
            margin-top: 20px;
            color: white;
            font-size: 1.1rem;
            font-weight: 300;
        }

        .lightbox-close {
            position: absolute;
            top: -50px;
            right: 0;
            background: none;
            border: none;
            font-size: 2.5rem;
            color: white;
            cursor: pointer;
            transition: all 0.3s ease;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .lightbox-close:hover {
            color: #ccc;
            transform: scale(1.1);
        }

        /* Responsive for project pages */
        @media (max-width: 768px) {
            .logo {
                top: 15px;
                left: 15px;
                width: 40px;
                height: 40px;
            }

            .theme-toggle {
                top: 15px;
                right: 15px;
                width: 40px;
                height: 40px;
            }

            .theme-toggle svg {
                width: 16px;
                height: 16px;
            }

            .project-title {
                font-size: 2.2rem;
            }
            
            .project-subtitle {
                font-size: 1.1rem;
            }
            
            .project-description {
                font-size: 1.2rem;
            }
            
            .back-button {
                top: 15px;
                left: 70px; /* Moved right to avoid logo overlap */
                padding: 8px 15px;
                font-size: 0.85rem;
            }
            
            .project-header {
                padding: 80px 0 40px;
            }
            
            .project-content {
                padding: 60px 0;
            }
        }

        .project-type {
            text-align: center;
            margin: 100px 0 60px;
        }

        .project-type h3 {
            font-size: 1.6rem;
            font-weight: 300;
            color: var(--text-color);
            margin-bottom: 10px;
        }

        .project-type .divider {
            width: 60px;
            height: 1px;
            background: var(--border-color);
            margin: 0 auto;
        }

        /* Volunteer */
        .volunteer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 60px;
            margin: 60px 0;
        }

        .volunteer-item {
            text-align: center;
            padding: 40px;
        }

        .volunteer-item h4 {
            font-size: 1.3rem;
            font-weight: 400;
            margin-bottom: 15px;
            color: var(--text-color);
        }

        .volunteer-item .date {
            color: var(--text-tertiary);
            font-size: 0.95rem;
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .volunteer-item p {
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Languages */
        .languages {
            display: flex;
            justify-content: center;
            gap: 80px;
            margin: 60px 0;
            flex-wrap: wrap;
        }

        .language {
            text-align: center;
        }

        .language-name {
            font-size: 1.4rem;
            font-weight: 400;
            color: var(--text-color);
            margin-bottom: 10px;
        }

        .language-level {
            color: var(--text-secondary);
            font-size: 0.95rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* Contact */
        .contact-content {
            text-align: center;
            max-width: 600px;
            margin: 0 auto;
        }

        .contact-info {
            margin: 60px 0;
        }

        .contact-item {
            display: block;
            margin: 30px 0;
            font-size: 1.2rem;
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .contact-item:hover {
            color: var(--text-color);
        }

        .contact-label {
            display: block;
            font-size: 0.9rem;
            color: var(--text-tertiary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 5px;
        }

        .availability {
            margin-top: 60px;
            padding: 40px;
            background: var(--card-bg);
            border-radius: 4px;
        }

        .availability p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            margin-bottom: 10px;
        }

        /* Contact Form */
        .contact-form-section {
            margin-top: 80px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .form-title {
            text-align: center;
            font-size: 1.8rem;
            font-weight: 300;
            color: var(--text-color);
            margin-bottom: 40px;
        }

        .contact-form {
            background: var(--card-bg);
            padding: 50px;
            border-radius: 8px;
            border-left: 3px solid var(--text-color);
        }

        .form-group {
            margin-bottom: 25px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: var(--text-color);
            font-weight: 400;
            font-size: 0.95rem;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-size: 1rem;
            color: var(--text-color);
            background: var(--bg-color);
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
            font-family: inherit;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--text-color);
            box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.1);
        }

        [data-theme="dark"] .form-group input:focus,
        [data-theme="dark"] .form-group textarea:focus {
            box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.1);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 120px;
        }

        .submit-btn {
            background: var(--button-bg);
            color: var(--button-text);
            padding: 12px 30px;
            border: none;
            border-radius: 25px;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.3s ease;
            font-family: inherit;
            width: 100%;
        }

        .submit-btn:hover {
            background: var(--button-hover);
            transform: translateY(-2px);
        }

        .submit-btn:active {
            transform: translateY(0);
        }

        .form-message {
            margin-top: 15px;
            padding: 10px;
            border-radius: 4px;
            font-size: 0.9rem;
            text-align: center;
            display: none;
        }

        .form-message.error {
            background: #ffeaea;
            color: #d63031;
            border: 1px solid #fab1a0;
        }

        .form-message.success {
            background: #d5f4e6;
            color: #00b894;
            border: 1px solid #81ecec;
        }

        .form-message.show {
            display: block;
        }

        /* Footer */
        footer {
            padding: 80px 0;
            text-align: center;
            border-top: 1px solid var(--border-color);
            margin-top: 80px;
        }

        footer p {
            color: var(--text-tertiary);
            font-size: 0.9rem;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }

            .logo {
                top: 20px;
                left: 20px;
                width: 44px;
                height: 44px;
            }

            .hero h1 {
                font-size: 2.8rem;
            }

            .hero .subtitle {
                font-size: 1.2rem;
            }

            section {
                padding: 80px 0;
            }

            .section-title {
                font-size: 2rem;
                margin-bottom: 60px;
            }

            nav ul {
                gap: 15px;
                flex-wrap: wrap;
                justify-content: center;
                font-size: 0.9rem;
            }

            .content-card {
                padding: 40px 30px;
            }

            .stats {
                gap: 40px;
            }

            .languages {
                gap: 40px;
                flex-direction: column;
                align-items: center;
            }

            .projects-grid {
                gap: 60px;
            }

            .contact-form {
                padding: 30px 20px;
            }

            .contact-form-section {
                margin-top: 60px;
            }

            .form-title {
                font-size: 1.5rem;
            }
        }

        /* Smooth animations */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        html {
            scroll-behavior: smooth;
        }