/* CSS Variables */
        :root {
            --primary: #4a90e2;
            --primary-light: #e3f2fd;
            --secondary: #ff6b6b;
            --dark: #333;
            --light: #fff;
            --gray: #f5f5f5;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }

        /* Reset & Base Styles */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.6;
        }

        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }

        section {
            padding: 80px 0;
        }

        h1, h2, h3, h4 {
            margin-bottom: 20px;
            color: var(--dark);
        }

        p {
            margin-bottom: 15px;
        }

        /* Button Styles */
        .btn {
            display: inline-block;
            background-color: var(--primary);
            color: var(--light);
            padding: 12px 24px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            text-align: center;
        }

        .btn:hover {
            background-color: #3a7bc8;
            transform: translateY(-2px);
        }

        .btn-secondary {
            background-color: var(--secondary);
        }

        .btn-secondary:hover {
            background-color: #e55c5c;
        }

        .News_btn {
            background-color: #ff9f43;
        }

        .News_btn:hover {
            background-color: #e58e3a;
        }

        /* Navigation */
        nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: var(--shadow);
            z-index: 1000;
            transition: var(--transition);
        }

        nav.scrolled {
            background-color: var(--light);
            padding: 10px 0;
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }

        .logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
        }

        .nav-links {
            display: flex;
            list-style: none;
        }

        .nav-links li {
            margin-left: 30px;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 500;
            transition: var(--transition);
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .auth-buttons {
            display: flex;
            gap: 10px;
        }

        .menu-toggle {
            display: none;
            font-size: 24px;
            cursor: pointer;
        }

        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, var(--primary-light), var(--light));
            padding: 150px 0 100px;
            text-align: center;
        }

        .hero h1 {
            font-size: 3rem;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .hero p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 30px;
            color: var(--dark);
        }

        /* Section Titles */
        .section-title {
            text-align: center;
            margin-bottom: 50px;
            position: relative;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 80px;
            height: 4px;
            background-color: var(--primary);
            margin: 15px auto 0;
        }

        /* Profile Section */
        .profile-content {
            display: flex;
            align-items: center;
            gap: 50px;
        }

        .profile-text {
            flex: 1;
        }

        .profile-image {
            flex: 1;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .profile-image img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* Portfolio Section */
        .portfolio-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
        }

        .portfolio-item {
            background-color: var(--light);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .portfolio-item:hover {
            transform: translateY(-10px);
        }

        .portfolio-img {
            height: 200px;
            overflow: hidden;
        }

        .portfolio-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .portfolio-item:hover .portfolio-img img {
            transform: scale(1.1);
        }

        .portfolio-info {
            padding: 20px;
        }

        .portfolio-info h3 {
            margin-bottom: 10px;
        }

        /* Portfolio Detail Modal */
        .portfolio-detail-modal {
            display: none;
        }

        .portfolio-detail-content {
            max-width: 1000px;
            margin: 50px auto;
            background-color: var(--light);
            border-radius: 10px;
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
        }

        .portfolio-detail-body {
            padding: 30px;
        }

        .portfolio-detail-container {
            display: flex;
            gap: 30px;
        }

        .portfolio-detail-image {
            flex: 1;
            border-radius: 8px;
            overflow: hidden;
        }

        .portfolio-detail-image img {
            width: 100%;
            height: auto;
            display: block;
        }

        .portfolio-detail-info {
            flex: 1;
        }

        .portfolio-detail-list {
            list-style: none;
            margin: 20px 0;
        }

        .portfolio-detail-list li {
            padding: 10px 0;
            border-bottom: 1px solid #eee;
            display: flex;
        }

        .portfolio-detail-list li:last-child {
            border-bottom: none;
        }

        .portfolio-detail-list strong {
            min-width: 150px;
            display: inline-block;
        }

        /* Commission Section */
        .commission-categories {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 40px;
        }

        .category-btn {
            background-color: var(--gray);
            border: none;
            padding: 10px 20px;
            border-radius: 4px;
            cursor: pointer;
            transition: var(--transition);
            font-weight: 500;
        }

        .category-btn.active {
            background-color: var(--primary);
            color: var(--light);
        }

        .commission-slider {
            position: relative;
            overflow: hidden;
        }

        .commission-slides {
            display: flex;
            transition: transform 0.5s ease;
        }

        .commission-category {
            min-width: 100%;
            padding: 0 15px;
        }

        .commission-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 25px;
        }

        .commission-item {
            background-color: var(--light);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            cursor: pointer;
        }

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

        .commission-img {
            height: 180px;
            overflow: hidden;
        }

        .commission-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .commission-info {
            padding: 15px;
        }

        .commission-info h3 {
            margin-bottom: 10px;
            font-size: 1.1rem;
        }

        .commission-price {
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 10px;
        }

        /* Modal Styles */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            z-index: 1100;
            overflow-y: auto;
        }

        .modal-content {
            background-color: var(--light);
            margin: 50px auto;
            width: 90%;
            max-width: 800px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            position: relative;
        }

        .close-modal {
            position: absolute;
            top: 15px;
            right: 15px;
            font-size: 24px;
            cursor: pointer;
            color: var(--dark);
            z-index: 1;
        }

        .modal-body {
            padding: 30px;
        }

        .commission-details {
            display: flex;
            gap: 30px;
            margin-bottom: 30px;
        }

        .commission-details-img {
            flex: 1;
            border-radius: 10px;
            overflow: hidden;
        }

        .commission-details-img img {
            width: 100%;
            height: auto;
            display: block;
        }

        .commission-details-info {
            flex: 1;
        }

        .order-form {
            background-color: var(--gray);
            padding: 25px;
            border-radius: 10px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 1rem;
        }

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

        .file-upload {
            border: 2px dashed #ddd;
            padding: 20px;
            text-align: center;
            border-radius: 4px;
            cursor: pointer;
            transition: var(--transition);
        }

        .file-upload:hover {
            border-color: var(--primary);
        }

        .file-upload i {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 10px;
        }

        /* News, Classes, Events Sections */
        .news-grid, .classes-grid, .events-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
        }

        .news-item, .class-item, .event-item {
            background-color: var(--light);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .news-item:hover, .class-item:hover, .event-item:hover {
            transform: translateY(-5px);
        }

        .news-img, .class-img, .event-img {
            height: 200px;
            overflow: hidden;
        }

        .news-img img, .class-img img, .event-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-info, .class-info, .event-info {
            padding: 20px;
        }

        .news-date, .event-date {
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 10px;
        }

        .class-price {
            color: var(--primary);
            font-weight: 600;
            font-size: 1.2rem;
            margin: 15px 0;
        }

        .class-schedule {
            margin: 15px 0;
        }

        .class-schedule li {
            margin-bottom: 8px;
        }

        /* Contact Section */
        .contact-container {
            display: flex;
            gap: 50px;
        }

        .contact-info {
            flex: 1;
        }

        .contact-form {
            flex: 1;
            background-color: var(--gray);
            padding: 30px;
            border-radius: 10px;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 25px;
        }

        .contact-icon {
            background-color: var(--primary);
            color: var(--light);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            flex-shrink: 0;
        }

        /* Footer */
        footer {
            background-color: var(--dark);
            color: var(--light);
            padding: 60px 0 30px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-column h3 {
            color: var(--light);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-column h3::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 40px;
            height: 3px;
            background-color: var(--primary);
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }

        .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            color: var(--light);
            transition: var(--transition);
        }

        .social-links a:hover {
            background-color: var(--primary);
            transform: translateY(-3px);
        }

        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #ccc;
        }

        /* Admin Login */
        .login-modal {
            display: none;
        }

        .login-form {
            max-width: 400px;
            margin: 50px auto;
            background-color: var(--light);
            padding: 30px;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }

        .login-tabs {
            display: flex;
            margin-bottom: 20px;
            border-bottom: 1px solid #ddd;
        }

        .login-tab {
            padding: 10px 20px;
            cursor: pointer;
            font-weight: 500;
        }

        .login-tab.active {
            color: var(--primary);
            border-bottom: 2px solid var(--primary);
        }

        /* Detail News Modal */
        .news-detail-modal {
            display: none;
        }

        .news-detail-content {
            max-width: 900px;
            margin: 50px auto;
            background-color: var(--light);
            border-radius: 10px;
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
        }

        .news-detail-body {
            padding: 30px;
        }

        .news-detail-header {
            margin-bottom: 25px;
        }

        .news-detail-date {
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 10px;
        }

        .news-detail-image {
            width: 100%;
            max-height: 400px;
            overflow: hidden;
            border-radius: 8px;
            margin-bottom: 25px;
        }

        .news-detail-image img {
            width: 100%;
            height: auto;
            display: block;
        }

        .news-navigation {
            display: flex;
            justify-content: space-between;
            margin-top: 30px;
        }

        /* Class Registration Modal */
        .class-registration-modal {
            display: none;
        }

        .class-options {
            display: flex;
            gap: 20px;
            margin-bottom: 30px;
        }

        .class-option {
            flex: 1;
            border: 2px solid #ddd;
            border-radius: 8px;
            padding: 20px;
            cursor: pointer;
            transition: var(--transition);
        }

        .class-option:hover {
            border-color: var(--primary);
        }

        .class-option.selected {
            border-color: var(--primary);
            background-color: var(--primary-light);
        }

        .class-instructor {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px solid #eee;
        }

        .instructor-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            overflow: hidden;
        }

        .instructor-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* Event Detail Modal */
        .event-detail-modal {
            display: none;
        }

        .event-detail-content {
            max-width: 800px;
            margin: 50px auto;
            background-color: var(--light);
            border-radius: 10px;
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
        }

        .event-detail-body {
            padding: 30px;
        }

        .event-detail-header {
            margin-bottom: 25px;
        }

        .event-detail-date {
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 10px;
        }

        .event-detail-image {
            width: 100%;
            max-height: 300px;
            overflow: hidden;
            border-radius: 8px;
            margin-bottom: 25px;
        }

        .event-detail-image img {
            width: 100%;
            height: auto;
            display: block;
        }

        .event-ticket-price {
            background-color: var(--primary-light);
            padding: 15px;
            border-radius: 8px;
            margin: 20px 0;
        }

        .ticket-form {
            background-color: var(--gray);
            padding: 25px;
            border-radius: 10px;
            margin-top: 25px;
        }

        /* Responsive Styles */
        @media (max-width: 992px) {
            .profile-content, .contact-container {
                flex-direction: column;
            }
            
            .commission-details {
                flex-direction: column;
            }
            
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--light);
                flex-direction: column;
                padding: 20px;
                box-shadow: var(--shadow);
            }
            
            .nav-links.active {
                display: flex;
            }
            
            .nav-links li {
                margin: 10px 0;
            }
            
            .menu-toggle {
                display: block;
            }
            
            .auth-buttons {
                display: none;
            }
            
            .class-options {
                flex-direction: column;
            }
            
            .portfolio-detail-container {
                flex-direction: column;
            }
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.2rem;
            }
            
            section {
                padding: 60px 0;
            }
            
            .commission-grid, .portfolio-grid, .news-grid, .classes-grid, .events-grid {
                grid-template-columns: 1fr;
            }
        }