/* ============================================ */
        /* CSS VARIABLES & RESET */
        /* ============================================ */
        :root {
            --primary-color: #2563eb;
            --secondary-color: #7c3aed;
            --accent-color: #f59e0b;
            --text-dark: #1e293b;
            --text-light: #64748b;
            --bg-light: #f8fafc;
            --white: #ffffff;
            --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
            --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
            
            /* Responsive Container Widths */
            --container-sm: 640px;
            --container-md: 768px;
            --container-lg: 1024px;
            --container-xl: 1200px;
            --container-2xl: 1400px;
            --container-3xl: 1600px;
            
            /* Language Switcher Variables */
            --lang-switcher-bg: rgba(255, 255, 255, 0.95);
            --lang-switcher-border: rgba(37, 99, 235, 0.2);
            --lang-switcher-hover: rgba(37, 99, 235, 0.1);
            --lang-switcher-active: var(--primary-color);
            --lang-switcher-text: var(--text-dark);
            --lang-switcher-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --lang-switcher-radius: 50px;
            --lang-switcher-padding: 0.5rem 1rem;
            --lang-switcher-gap: 0.5rem;
            --lang-switcher-transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-text-size-adjust: 100%;
            -ms-text-size-adjust: 100%;
        }

        body {
            font-family: 'Montserrat', sans-serif;
            color: var(--text-dark);
            line-height: 1.6;
            overflow-x: hidden;
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: 'Playfair Display', serif;
            font-weight: 700;
            line-height: 1.2;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        /* ============================================ */
        /* LANGUAGE SWITCHER STYLES */
        /* ============================================ */
        .language-switcher {
            display: flex;
            align-items: center;
            gap: var(--lang-switcher-gap);
            background: var(--lang-switcher-bg);
            border: 2px solid var(--lang-switcher-border);
            border-radius: var(--lang-switcher-radius);
            padding: var(--lang-switcher-padding);
            box-shadow: var(--lang-switcher-shadow);
            transition: var(--lang-switcher-transition);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }

        .language-switcher::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
            transition: left 0.5s ease;
        }

        .language-switcher:hover::before {
            left: 100%;
        }

        .language-switcher:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.2);
            border-color: var(--primary-color);
        }

        .lang-btn {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.4rem 0.8rem;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--lang-switcher-text);
            background: transparent;
            border: none;
            cursor: pointer;
            transition: var(--lang-switcher-transition);
            position: relative;
            z-index: 1;
        }

        .lang-btn:hover {
            background: var(--lang-switcher-hover);
            transform: scale(1.05);
        }

        .lang-btn.active {
            background: var(--lang-switcher-active);
            color: white;
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
        }

        .lang-btn.active:hover {
            background: var(--lang-switcher-active);
            transform: scale(1.05);
        }

        .lang-flag {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            object-fit: cover;
            border: 1px solid rgba(0, 0, 0, 0.1);
        }

        .lang-divider {
            width: 1px;
            height: 20px;
            background: var(--lang-switcher-border);
            margin: 0 0.2rem;
        }

        /* Language Switcher Animation */
        @keyframes langPulse {
            0%, 100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.1);
            }
        }

        .lang-btn.changing {
            animation: langPulse 0.3s ease;
        }

        /* Language Switcher Mobile */
        @media (max-width: 768px) {
            .language-switcher {
                padding: 0.4rem 0.8rem;
                gap: 0.3rem;
            }

            .lang-btn {
                padding: 0.3rem 0.6rem;
                font-size: 0.75rem;
            }

            .lang-flag {
                width: 16px;
                height: 16px;
            }

            .lang-divider {
                height: 16px;
            }
        }

        /* ============================================ */
        /* CUSTOM CURSOR EFFECT */
        /* ============================================ */
        .cursor {
            width: 20px;
            height: 20px;
            border: 2px solid var(--primary-color);
            border-radius: 50%;
            position: fixed;
            pointer-events: none;
            z-index: 9999;
            transition: all 0.1s ease;
            mix-blend-mode: difference;
            display: none; /* Hidden on touch devices */
        }

        .cursor-follower {
            width: 40px;
            height: 40px;
            background: rgba(37, 99, 235, 0.1);
            border-radius: 50%;
            position: fixed;
            pointer-events: none;
            z-index: 9998;
            transition: all 0.3s ease;
            display: none; /* Hidden on touch devices */
        }

        /* Show cursor only on devices with hover capability */
        @media (hover: hover) and (pointer: fine) {
            .cursor, .cursor-follower {
                display: block;
            }
        }

        /* ============================================ */
        /* SCROLL PROGRESS BAR */
        /* ============================================ */
        .scroll-progress {
            position: fixed;
            top: 0;
            left: 0;
            height: 3px;
            background: var(--gradient-1);
            z-index: 10000;
            transition: width 0.1s;
        }

        /* ============================================ */
        /* NAVIGATION */
        /* ============================================ */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--shadow-md);
            z-index: 1000;
            transition: all 0.3s ease;
            padding: 1rem 0;
        }

        .navbar.scrolled {
            padding: 0.5rem 0;
            box-shadow: var(--shadow-lg);
        }

        .nav-container {
            max-width: var(--container-xl);
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            text-decoration: none;
            transition: transform 0.3s ease;
        }

        .logo:hover {
            transform: scale(1.05);
        }

        .logo-icon {
            width: 50px;
            height: 50px;
            background: var(--gradient-1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            box-shadow: var(--shadow-md);
            flex-shrink: 0;
        }

        .logo-text {
            display: flex;
            flex-direction: column;
        }

        .logo-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.2;
        }

        .logo-subtitle {
            font-size: 0.75rem;
            color: var(--text-light);
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
            align-items: center;
        }

        .nav-link {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.9rem;
            position: relative;
            transition: color 0.3s ease;
            padding: 0.5rem 0;
            white-space: nowrap;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--gradient-1);
            transition: width 0.3s ease;
        }

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

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-phone {
            background: var(--gradient-1);
            color: white !important;
            padding: 0.75rem 1.5rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-md);
            white-space: nowrap;
        }

        .nav-phone:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .nav-phone::after {
            display: none !important;
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-dark);
            padding: 0.5rem;
        }

        /* ============================================ */
        /* HERO SECTION */
        /* ============================================ */
        .hero {
            margin-top: 80px;
            padding: 4rem 2rem;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            position: relative;
            overflow: hidden;
            min-height: 90vh;
            display: flex;
            align-items: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.05" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
            background-size: cover;
            background-position: bottom;
        }

        .hero-container {
            max-width: var(--container-xl);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
            position: relative;
            z-index: 1;
            width: 100%;
        }

        .hero-content {
            color: white;
            animation: fadeInLeft 1s ease;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-size: 0.875rem;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        .hero-title {
            font-size: 3rem;
            margin-bottom: 1.5rem;
            line-height: 1.1;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
        }

        .hero-title span {
            color: #fbbf24;
            display: block;
        }

        .hero-description {
            font-size: 1.125rem;
            margin-bottom: 2rem;
            opacity: 0.95;
            line-height: 1.8;
        }

        .hero-features {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-bottom: 2rem;
        }

        .hero-feature {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 1rem;
        }

        .hero-feature i {
            width: 24px;
            height: 24px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            flex-shrink: 0;
        }

        .hero-buttons {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn {
            padding: 1rem 2rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            white-space: nowrap;
        }

        .btn-primary {
            background: white;
            color: var(--primary-color);
            box-shadow: var(--shadow-lg);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.2);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            border: 2px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: translateY(-3px);
        }

        .hero-image {
            position: relative;
            animation: fadeInRight 1s ease;
        }

        .hero-image-wrapper {
            position: relative;
            border-radius: 50%;
            overflow: hidden;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
            border: 8px solid rgba(255, 255, 255, 0.3);
            width: 450px;
            height: 450px;
            margin: 0 auto;
            max-width: 100%;
        }

        .hero-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .floating-card {
            position: absolute;
            background: white;
            padding: 1rem 1.5rem;
            border-radius: 16px;
            box-shadow: var(--shadow-xl);
            display: flex;
            align-items: center;
            gap: 0.75rem;
            animation: float 3s ease-in-out infinite;
            z-index: 2;
        }

        .floating-card-1 {
            top: 10%;
            left: -10%;
            animation-delay: 0s;
        }

        .floating-card-2 {
            bottom: 20%;
            right: -5%;
            animation-delay: 1.5s;
        }

        .floating-card-icon {
            width: 40px;
            height: 40px;
            background: var(--gradient-1);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.25rem;
            flex-shrink: 0;
        }

        .floating-card-text {
            font-weight: 600;
            color: var(--text-dark);
            font-size: 0.875rem;
        }

        .floating-card-subtext {
            font-size: 0.75rem;
            color: var(--text-light);
        }

        /* ============================================ */
        /* STATS SECTION */
        /* ============================================ */
        .stats {
            padding: 4rem 2rem;
            background: white;
            position: relative;
        }

        .stats-container {
            max-width: var(--container-xl);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }

        .stat-item {
            text-align: center;
            padding: 2rem;
            border-radius: 16px;
            background: var(--bg-light);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .stat-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--gradient-1);
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .stat-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .stat-item:hover::before {
            transform: scaleX(1);
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            background: var(--gradient-1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            color: var(--text-light);
            font-weight: 500;
        }

        /* ============================================ */
        /* ABOUT SECTION */
        /* ============================================ */
        .about {
            padding: 6rem 2rem;
            background: var(--bg-light);
        }

        .section-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .section-badge {
            display: inline-block;
            background: var(--gradient-1);
            color: white;
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .section-title {
            font-size: 2.5rem;
            color: var(--text-dark);
            margin-bottom: 1rem;
        }

        .section-subtitle {
            color: var(--text-light);
            font-size: 1.125rem;
            max-width: 600px;
            margin: 0 auto;
        }

        .about-container {
            max-width: var(--container-xl);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .about-image {
            position: relative;
        }

        .about-image-main {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            position: relative;
            z-index: 1;
        }

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

        .about-image-bg {
            position: absolute;
            top: 2rem;
            left: 2rem;
            right: -2rem;
            bottom: -2rem;
            background: var(--gradient-1);
            border-radius: 20px;
            z-index: 0;
            opacity: 0.2;
        }

        .experience-badge {
            position: absolute;
            bottom: -20px;
            right: -20px;
            background: white;
            padding: 1.5rem;
            border-radius: 16px;
            box-shadow: var(--shadow-xl);
            z-index: 2;
            text-align: center;
        }

        .experience-badge-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary-color);
            display: block;
        }

        .experience-badge-text {
            font-size: 0.875rem;
            color: var(--text-light);
        }

        .about-content h3 {
            font-size: 2rem;
            margin-bottom: 1.5rem;
            color: var(--text-dark);
        }

        .about-content p {
            color: var(--text-light);
            margin-bottom: 1.5rem;
            line-height: 1.8;
        }

        .about-info {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .about-info-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
        }

        .about-info-icon {
            width: 50px;
            height: 50px;
            background: var(--gradient-1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.25rem;
            flex-shrink: 0;
        }

        .about-info-text h4 {
            font-size: 1rem;
            margin-bottom: 0.25rem;
            color: var(--text-dark);
        }

        .about-info-text p {
            font-size: 0.875rem;
            margin: 0;
        }

        /* ============================================ */
        /* CLASSES SECTION */
        /* ============================================ */
        .classes {
            padding: 6rem 2rem;
            background: white;
        }

        .classes-container {
            max-width: var(--container-xl);
            margin: 0 auto;
        }

        .classes-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .class-card {
            background: white;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }

        .class-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-xl);
            border-color: var(--primary-color);
        }

        .class-card-header {
            background: var(--gradient-1);
            padding: 2rem;
            text-align: center;
            color: white;
            position: relative;
            overflow: hidden;
        }

        .class-card-header::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
            animation: shimmer 3s infinite;
        }

        .class-icon {
            width: 80px;
            height: 80px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            font-size: 2.5rem;
            position: relative;
            z-index: 1;
        }

        .class-title {
            font-size: 1.5rem;
            margin-bottom: 0.5rem;
            position: relative;
            z-index: 1;
        }

        .class-subtitle {
            opacity: 0.9;
            font-size: 0.875rem;
            position: relative;
            z-index: 1;
        }

        .class-card-body {
            padding: 2rem;
        }

        .class-features {
            list-style: none;
            margin-bottom: 2rem;
        }

        .class-feature {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 1rem;
            color: var(--text-light);
            font-size: 0.9rem;
        }

        .class-feature i {
            color: #10b981;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .class-price {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #e2e8f0;
        }

        .class-price-label {
            color: var(--text-light);
            font-size: 0.875rem;
            margin-bottom: 0.5rem;
        }

        .class-price-value {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-color);
        }

        /* ============================================ */
        /* FEATURES SECTION */
        /* ============================================ */
        .features {
            padding: 6rem 2rem;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            position: relative;
            overflow: hidden;
        }

        .features::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%239C92AC" fill-opacity="0.05"><path d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z"/></g></g></svg>');
            opacity: 0.5;
        }

        .features-container {
            max-width: var(--container-xl);
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .feature-card {
            background: white;
            padding: 2.5rem;
            border-radius: 20px;
            box-shadow: var(--shadow-md);
            transition: all 0.3s ease;
            text-align: center;
        }

        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-xl);
        }

        .feature-icon {
            width: 80px;
            height: 80px;
            background: var(--gradient-1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: white;
            font-size: 2rem;
            transition: all 0.3s ease;
        }

        .feature-card:hover .feature-icon {
            transform: rotateY(360deg);
        }

        .feature-title {
            font-size: 1.25rem;
            margin-bottom: 1rem;
            color: var(--text-dark);
        }

        .feature-description {
            color: var(--text-light);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        /* ============================================ */
        /* TEACHING METHOD SECTION */
        /* ============================================ */
        .method {
            padding: 6rem 2rem;
            background: white;
        }

        .method-container {
            max-width: var(--container-xl);
            margin: 0 auto;
        }

        .method-timeline {
            display: flex;
            justify-content: space-between;
            margin-top: 4rem;
            position: relative;
        }

        .method-timeline::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            z-index: 0;
        }

        .method-step {
            flex: 1;
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 1rem;
        }

        .method-step-number {
            width: 80px;
            height: 80px;
            background: white;
            border: 4px solid var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary-color);
            transition: all 0.3s ease;
        }

        .method-step:hover .method-step-number {
            background: var(--primary-color);
            color: white;
            transform: scale(1.1);
        }

        .method-step-title {
            font-size: 1.25rem;
            margin-bottom: 0.75rem;
            color: var(--text-dark);
        }

        .method-step-desc {
            color: var(--text-light);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* ============================================ */
        /* TESTIMONIALS SECTION */
        /* ============================================ */
        .testimonials {
            padding: 6rem 2rem;
            background: var(--bg-light);
        }

        .testimonials-container {
            max-width: var(--container-xl);
            margin: 0 auto;
        }

        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .testimonial-card {
            background: white;
            padding: 2.5rem;
            border-radius: 20px;
            box-shadow: var(--shadow-md);
            position: relative;
            transition: all 0.3s ease;
        }

        .testimonial-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-xl);
        }

        .testimonial-quote {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 4rem;
            color: var(--primary-color);
            opacity: 0.1;
            font-family: 'Playfair Display', serif;
            line-height: 1;
        }

        .testimonial-stars {
            color: #fbbf24;
            margin-bottom: 1rem;
            font-size: 1rem;
        }

        .testimonial-text {
            color: var(--text-light);
            font-style: italic;
            margin-bottom: 1.5rem;
            line-height: 1.8;
            font-size: 0.95rem;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .testimonial-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--gradient-1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 1.25rem;
            flex-shrink: 0;
        }

        .testimonial-info h4 {
            font-size: 1rem;
            color: var(--text-dark);
            margin-bottom: 0.25rem;
        }

        .testimonial-info p {
            font-size: 0.875rem;
            color: var(--text-light);
        }

        /* ============================================ */
        /* LOCATION SECTION */
        /* ============================================ */
        .location {
            padding: 6rem 2rem;
            background: white;
        }

        .location-container {
            max-width: var(--container-xl);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .location-info h3 {
            font-size: 2rem;
            margin-bottom: 1.5rem;
            color: var(--text-dark);
        }

        .location-info > p {
            color: var(--text-light);
            margin-bottom: 2rem;
            line-height: 1.8;
        }

        .location-details {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .location-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
        }

        .location-icon {
            width: 50px;
            height: 50px;
            background: var(--gradient-1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.25rem;
            flex-shrink: 0;
        }

        .location-text h4 {
            font-size: 1rem;
            margin-bottom: 0.25rem;
            color: var(--text-dark);
        }

        .location-text p {
            color: var(--text-light);
            font-size: 0.9rem;
            margin: 0;
        }

        .location-map {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            height: 400px;
        }

        .location-map iframe {
            width: 100%;
            height: 100%;
            border: none;
        }

        /* ============================================ */
        /* CONTACT SECTION */
        /* ============================================ */
        .contact {
            padding: 6rem 2rem;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            position: relative;
            overflow: hidden;
        }

        .contact::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.05" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
            background-size: cover;
            background-position: bottom;
        }

        .contact-container {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 1;
            color: white;
        }

        .contact h2 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }

        .contact > p {
            font-size: 1.125rem;
            opacity: 0.9;
            margin-bottom: 3rem;
        }

        .contact-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
            margin-bottom: 3rem;
        }

        .contact-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            padding: 2.5rem;
            border-radius: 20px;
            border: 2px solid rgba(255, 255, 255, 0.2);
            transition: all 0.3s ease;
        }

        .contact-card:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-5px);
        }

        .contact-card-icon {
            width: 70px;
            height: 70px;
            background: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: var(--primary-color);
            font-size: 2rem;
        }

        .contact-card h3 {
            font-size: 1.25rem;
            margin-bottom: 0.75rem;
        }

        .contact-card p {
            opacity: 0.9;
            font-size: 0.9rem;
            margin-bottom: 1rem;
        }

        .contact-card a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.25rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.3s ease;
        }

        .contact-card a:hover {
            transform: scale(1.05);
        }

        /* ============================================ */
        /* FOOTER */
        /* ============================================ */
        .footer {
            background: var(--text-dark);
            color: white;
            padding: 4rem 2rem 2rem;
        }

        .footer-container {
            max-width: var(--container-xl);
            margin: 0 auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 4rem;
            margin-bottom: 3rem;
        }

        .footer-brand .logo {
            margin-bottom: 1.5rem;
        }

        .footer-brand .logo-title,
        .footer-brand .logo-subtitle {
            color: white;
        }

        .footer-brand p {
            color: #94a3b8;
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }

        .footer-social {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-decoration: none;
            transition: all 0.3s ease;
        }

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

        .footer-column h4 {
            font-size: 1.125rem;
            margin-bottom: 1.5rem;
            color: white;
            position: relative;
            padding-bottom: 0.75rem;
        }

        .footer-column h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--gradient-1);
            border-radius: 2px;
        }

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

        .footer-links li {
            margin-bottom: 0.75rem;
        }

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 2rem;
            text-align: center;
            color: #94a3b8;
            font-size: 0.875rem;
        }

        .footer-bottom a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-bottom a:hover {
            color: white;
        }

        /* ============================================ */
        /* ZALO FLOATING BUTTON */
        /* ============================================ */
        .zalo-float {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            animation: bounce 2s infinite;
        }

        .zalo-button {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            background: #0068ff;
            color: white;
            padding: 1rem 1.5rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            box-shadow: 0 10px 25px rgba(0, 104, 255, 0.3);
            transition: all 0.3s ease;
        }

        .zalo-button:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 104, 255, 0.4);
        }

        .zalo-icon {
            width: 30px;
            height: 30px;
            background: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0068ff;
            font-size: 1.25rem;
        }

        /* ============================================ */
        /* ANIMATIONS */
        /* ============================================ */
        @keyframes fadeInLeft {
            from {
                opacity: 0;
                transform: translateX(-50px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        @keyframes fadeInRight {
            from {
                opacity: 0;
                transform: translateX(50px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        @keyframes float {
            0%, 100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-20px);
            }
        }

        @keyframes bounce {
            0%, 100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-10px);
            }
        }

        @keyframes shimmer {
            0% {
                transform: translateX(-100%);
            }
            100% {
                transform: translateX(100%);
            }
        }

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

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        @keyframes particle-float {
            0%, 100% {
                transform: translateY(100vh) rotate(0deg);
                opacity: 0;
            }
            10% {
                opacity: 1;
            }
            90% {
                opacity: 1;
            }
            100% {
                transform: translateY(-100vh) rotate(720deg);
                opacity: 0;
            }
        }

        /* ============================================ */
        /* PAGE TRANSITION */
        /* ============================================ */
        .page {
            display: none;
            animation: fadeIn 0.5s ease;
        }

        .page.active {
            display: block;
        }

        /* ============================================ */
        /* TERMS & PRIVACY PAGE */
        /* ============================================ */
        .terms-page {
            padding: 8rem 2rem 4rem;
            background: var(--bg-light);
            min-height: 100vh;
        }

        .terms-container {
            max-width: 800px;
            margin: 0 auto;
            background: white;
            padding: 3rem;
            border-radius: 20px;
            box-shadow: var(--shadow-lg);
        }

        .terms-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 2px solid #e2e8f0;
        }

        .terms-header h1 {
            font-size: 2.5rem;
            color: var(--text-dark);
            margin-bottom: 1rem;
        }

        .terms-section {
            margin-bottom: 2.5rem;
        }

        .terms-section h2 {
            font-size: 1.5rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--bg-light);
        }

        .terms-section p,
        .terms-section ul {
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 1rem;
        }

        .terms-section ul {
            padding-left: 2rem;
        }

        .terms-section li {
            margin-bottom: 0.5rem;
        }

        .back-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--gradient-1);
            color: white;
            padding: 0.75rem 1.5rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            margin-bottom: 2rem;
            transition: all 0.3s ease;
        }

        .back-btn:hover {
            transform: translateX(-5px);
            box-shadow: var(--shadow-lg);
        }

        /* ============================================ */
        /* LOADING ANIMATION */
        /* ============================================ */
        .loader {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: white;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 10000;
            transition: opacity 0.5s ease;
        }

        .loader.hidden {
            opacity: 0;
            pointer-events: none;
        }

        .loader-spinner {
            width: 60px;
            height: 60px;
            border: 4px solid var(--bg-light);
            border-top-color: var(--primary-color);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        /* ============================================ */
        /* PARTICLE EFFECT */
        /* ============================================ */
        .particles {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 1;
            overflow: hidden;
        }

        .particle {
            position: absolute;
            width: 10px;
            height: 10px;
            background: rgba(37, 99, 235, 0.1);
            border-radius: 50%;
            animation: particle-float 20s infinite;
        }

        /* ============================================ */
        /* RESPONSIVE DESIGN - EXTRA LARGE (TV, 4K) */
        /* ============================================ */
        @media (min-width: 1921px) {
            html {
                font-size: 18px;
            }
            
            .nav-container,
            .hero-container,
            .stats-container,
            .about-container,
            .classes-container,
            .features-container,
            .method-container,
            .testimonials-container,
            .location-container,
            .footer-container {
                max-width: var(--container-3xl);
            }
            
            .hero-image-wrapper {
                width: 550px;
                height: 550px;
            }
            
            .hero-title {
                font-size: 4rem;
            }
            
            .section-title {
                font-size: 3.5rem;
            }
            
            .stats-container {
                grid-template-columns: repeat(4, 1fr);
                gap: 3rem;
            }
            
            .classes-grid,
            .features-grid,
            .testimonials-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 3rem;
            }
            
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
                gap: 5rem;
            }
        }

        /* ============================================ */
        /* RESPONSIVE DESIGN - LARGE DESKTOP */
        /* ============================================ */
        @media (min-width: 1441px) and (max-width: 1920px) {
            .nav-container,
            .hero-container,
            .stats-container,
            .about-container,
            .classes-container,
            .features-container,
            .method-container,
            .testimonials-container,
            .location-container,
            .footer-container {
                max-width: var(--container-2xl);
            }
            
            .hero-image-wrapper {
                width: 500px;
                height: 500px;
            }
        }

        /* ============================================ */
        /* RESPONSIVE DESIGN - DESKTOP */
        /* ============================================ */
        @media (min-width: 1025px) and (max-width: 1440px) {
            .nav-container,
            .hero-container,
            .stats-container,
            .about-container,
            .classes-container,
            .features-container,
            .method-container,
            .testimonials-container,
            .location-container,
            .footer-container {
                max-width: var(--container-xl);
            }
        }

        /* ============================================ */
        /* RESPONSIVE DESIGN - TABLET LANDSCAPE */
        /* ============================================ */
        @media (max-width: 1024px) {
            .hero-container,
            .about-container,
            .location-container {
                grid-template-columns: 1fr;
                gap: 3rem;
            }
            
            .hero-image-wrapper {
                width: 350px;
                height: 350px;
            }
            
            .stats-container {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            
            .classes-grid,
            .features-grid,
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 3rem;
            }
            
            .contact-cards {
                grid-template-columns: 1fr;
            }
            
            .method-timeline {
                flex-wrap: wrap;
            }
            
            .method-step {
                flex: 0 0 50%;
                margin-bottom: 2rem;
            }
            
            .method-timeline::before {
                display: none;
            }
            
            .floating-card-1 {
                left: 5%;
            }
            
            .floating-card-2 {
                right: 5%;
            }
        }

        /* ============================================ */
        /* RESPONSIVE DESIGN - TABLET PORTRAIT */
        /* ============================================ */
        @media (max-width: 768px) {
            html {
                font-size: 15px;
            }
            
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: white;
                flex-direction: column;
                padding: 2rem;
                box-shadow: var(--shadow-lg);
                gap: 1rem;
            }
            
            .nav-menu.active {
                display: flex;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .nav-container {
                padding: 0 1rem;
            }
            
            .hero {
                padding: 3rem 1rem;
                min-height: auto;
            }
            
            .hero-title {
                font-size: 2rem;
            }
            
            .hero-description {
                font-size: 1rem;
            }
            
            .hero-buttons {
                flex-direction: column;
            }
            
            .btn {
                width: 100%;
                justify-content: center;
            }
            
            .section-title {
                font-size: 2rem;
            }
            
            .about,
            .classes,
            .features,
            .method,
            .testimonials,
            .location,
            .contact {
                padding: 4rem 1rem;
            }
            
            .classes-grid,
            .features-grid,
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            
            .method-timeline {
                flex-direction: column;
                gap: 2rem;
            }
            
            .method-step {
                flex: 1;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            
            .about-info {
                grid-template-columns: 1fr;
            }
            
            .hero-image-wrapper {
                width: 280px;
                height: 280px;
            }
            
            .floating-card {
                padding: 0.75rem 1rem;
                font-size: 0.8rem;
            }
            
            .floating-card-icon {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }
            
            .zalo-float {
                bottom: 20px;
                right: 20px;
            }
            
            .zalo-button {
                padding: 0.75rem 1rem;
                font-size: 0.9rem;
            }
            
            .terms-container {
                padding: 2rem 1.5rem;
            }
            
            .terms-header h1 {
                font-size: 2rem;
            }
            
            .location-map {
                height: 300px;
            }
        }

        /* ============================================ */
        /* RESPONSIVE DESIGN - MOBILE */
        /* ============================================ */
        @media (max-width: 480px) {
            html {
                font-size: 14px;
            }
            
            .nav-container {
                padding: 0 0.75rem;
            }
            
            .logo-icon {
                width: 40px;
                height: 40px;
                font-size: 1.2rem;
            }
            
            .logo-title {
                font-size: 1rem;
            }
            
            .logo-subtitle {
                font-size: 0.65rem;
            }
            
            .hero {
                padding: 2rem 0.75rem;
            }
            
            .hero-title {
                font-size: 1.75rem;
            }
            
            .hero-badge {
                font-size: 0.75rem;
                padding: 0.4rem 0.8rem;
            }
            
            .hero-image-wrapper {
                width: 240px;
                height: 240px;
            }
            
            .floating-card {
                display: none; /* Hide on very small screens */
            }
            
            .stats {
                padding: 3rem 0.75rem;
            }
            
            .stats-container {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            
            .stat-item {
                padding: 1.5rem 1rem;
            }
            
            .stat-number {
                font-size: 2rem;
            }
            
            .section-header {
                margin-bottom: 2.5rem;
            }
            
            .section-title {
                font-size: 1.75rem;
            }
            
            .section-subtitle {
                font-size: 1rem;
            }
            
            .about,
            .classes,
            .features,
            .method,
            .testimonials,
            .location,
            .contact {
                padding: 3rem 0.75rem;
            }
            
            .about-content h3 {
                font-size: 1.5rem;
            }
            
            .class-card-body {
                padding: 1.5rem;
            }
            
            .feature-card {
                padding: 2rem 1.5rem;
            }
            
            .testimonial-card {
                padding: 2rem 1.5rem;
            }
            
            .contact h2 {
                font-size: 1.75rem;
            }
            
            .contact-card {
                padding: 2rem 1.5rem;
            }
            
            .footer {
                padding: 3rem 0.75rem 1.5rem;
            }
            
            .zalo-float {
                bottom: 15px;
                right: 15px;
            }
            
            .zalo-button {
                padding: 0.6rem 0.8rem;
                font-size: 0.85rem;
            }
            
            .zalo-icon {
                width: 24px;
                height: 24px;
                font-size: 1rem;
            }
            
            .terms-page {
                padding: 6rem 0.75rem 3rem;
            }
            
            .terms-container {
                padding: 1.5rem 1rem;
            }
            
            .terms-header h1 {
                font-size: 1.5rem;
            }
            
            .terms-section h2 {
                font-size: 1.25rem;
            }
            
            .back-btn {
                padding: 0.6rem 1.2rem;
                font-size: 0.9rem;
            }
            
            .location-map {
                height: 250px;
            }
        }

        /* ============================================ */
        /* RESPONSIVE DESIGN - VERY SMALL MOBILE */
        /* ============================================ */
        @media (max-width: 360px) {
            html {
                font-size: 13px;
            }
            
            .hero-title {
                font-size: 1.5rem;
            }
            
            .hero-image-wrapper {
                width: 200px;
                height: 200px;
            }
            
            .stats-container {
                grid-template-columns: 1fr;
            }
            
            .section-title {
                font-size: 1.5rem;
            }
        }

        /* ============================================ */
        /* RESPONSIVE DESIGN - LANDSCAPE MODE */
        /* ============================================ */
        @media (max-height: 500px) and (orientation: landscape) {
            .hero {
                min-height: auto;
                padding: 2rem 1rem;
            }
            
            .hero-container {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            
            .hero-image-wrapper {
                width: 200px;
                height: 200px;
            }
            
            .floating-card {
                display: none;
            }
            
            .navbar {
                padding: 0.5rem 0;
            }
        }

        /* ============================================ */
        /* TOUCH DEVICE OPTIMIZATIONS */
        /* ============================================ */
        @media (hover: none) and (pointer: coarse) {
            /* Disable hover effects on touch devices */
            .class-card:hover,
            .feature-card:hover,
            .testimonial-card:hover,
            .stat-item:hover {
                transform: none;
            }
            
            .feature-card:hover .feature-icon {
                transform: none;
            }
            
            /* Increase tap targets */
            .nav-link,
            .footer-links a,
            .btn {
                min-height: 44px;
                display: flex;
                align-items: center;
            }
            
            /* Remove custom cursor on touch */
            .cursor,
            .cursor-follower {
                display: none !important;
            }
        }

        /* ============================================ */
        /* HIGH DPI DISPLAYS */
        /* ============================================ */
        @media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
            /* Optimize for retina displays */
            body {
                -webkit-font-smoothing: antialiased;
                -moz-osx-font-smoothing: grayscale;
            }
        }

        /* ============================================ */
        /* PRINT STYLES */
        /* ============================================ */
        @media print {
            .navbar,
            .zalo-float,
            .scroll-progress,
            .cursor,
            .cursor-follower,
            .particles,
            .loader,
            .language-switcher {
                display: none !important;
            }
            
            body {
                background: white;
                color: black;
            }
            
            .hero,
            .contact {
                background: white !important;
                color: black !important;
            }
            
            * {
                box-shadow: none !important;
                text-shadow: none !important;
            }
        }

        /* ============================================ */
        /* SAFE AREA INSETS (iPhone notch, etc.) */
        /* ============================================ */
        @supports (padding: max(0px)) {
            .navbar {
                padding-left: max(2rem, env(safe-area-inset-left));
                padding-right: max(2rem, env(safe-area-inset-right));
            }
            
            .footer {
                padding-bottom: max(2rem, env(safe-area-inset-bottom));
            }
            
            .zalo-float {
                bottom: max(30px, env(safe-area-inset-bottom));
                right: max(30px, env(safe-area-inset-right));
            }
        }

        /* ============================================ */
        /* REDUCED MOTION PREFERENCE */
        /* ============================================ */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
            
            html {
                scroll-behavior: auto;
            }
        }

        /* ============================================ */
        /* DARK MODE SUPPORT (Optional) */
        /* ============================================ */
        @media (prefers-color-scheme: dark) {
            /* Uncomment to enable dark mode
            :root {
                --text-dark: #f1f5f9;
                --text-light: #94a3b8;
                --bg-light: #1e293b;
                --white: #0f172a;
            }
            */
        }