/* ===== CSS VARIABLES ===== */
        :root {
            /* Colors */
            --primary-color: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --secondary-color: #64748b;
            --accent-color: #f59e0b;
            --success-color: #10b981;
            --warning-color: #f59e0b;
            --error-color: #ef4444;
            
            /* Text Colors */
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --text-light: #94a3b8;
            --text-white: #ffffff;
            
            /* Background Colors */
            --bg-primary: #ffffff;
            --bg-secondary: #f8fafc;
            --bg-tertiary: #f1f5f9;
            --bg-dark: #1e293b;
            
            /* Shadows */
            --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);
            
            /* Typography */
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --font-size-xs: 0.75rem;
            --font-size-sm: 0.875rem;
            --font-size-base: 1rem;
            --font-size-lg: 1.125rem;
            --font-size-xl: 1.25rem;
            --font-size-2xl: 1.5rem;
            --font-size-3xl: 1.875rem;
            --font-size-4xl: 2.25rem;
            --font-size-5xl: 3rem;
            
            /* Spacing */
            --spacing-1: 0.25rem;
            --spacing-2: 0.5rem;
            --spacing-3: 0.75rem;
            --spacing-4: 1rem;
            --spacing-5: 1.25rem;
            --spacing-6: 1.5rem;
            --spacing-8: 2rem;
            --spacing-10: 2.5rem;
            --spacing-12: 3rem;
            --spacing-16: 4rem;
            --spacing-20: 5rem;
            --spacing-24: 6rem;
            
            /* Border Radius */
            --radius-sm: 0.125rem;
            --radius-base: 0.25rem;
            --radius-md: 0.375rem;
            --radius-lg: 0.5rem;
            --radius-xl: 0.75rem;
            --radius-2xl: 1rem;
            --radius-full: 9999px;
            
            /* Transitions */
            --transition-base: 0.2s ease-in-out;
            --transition-fast: 0.15s ease-in-out;
            --transition-slow: 0.3s ease-in-out;
            
            /* Z-Index */
            --z-dropdown: 1000;
            --z-sticky: 1020;
            --z-fixed: 1030;
            --z-modal: 1040;
            --z-popover: 1050;
            --z-tooltip: 1060;
        }

        /* ===== RESET & BASE STYLES ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-family);
            font-size: var(--font-size-base);
            line-height: 1.6;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        /* ===== TYPOGRAPHY ===== */
        h1, h2, h3, h4, h5, h6 {
            font-weight: 600;
            line-height: 1.2;
            margin-bottom: var(--spacing-4);
        }

        h1 { font-size: var(--font-size-5xl); }
        h2 { font-size: var(--font-size-4xl); }
        h3 { font-size: var(--font-size-3xl); }
        h4 { font-size: var(--font-size-2xl); }
        h5 { font-size: var(--font-size-xl); }
        h6 { font-size: var(--font-size-lg); }

        p {
            margin-bottom: var(--spacing-4);
            color: var(--text-secondary);
        }

        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition-base);
        }

        a:hover {
            color: var(--primary-dark);
        }

        /* ===== LAYOUT UTILITIES ===== */
        .section-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-6);
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-16);
        }

        .section-title {
            font-size: var(--font-size-4xl);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-4);
        }

        .section-subtitle {
            font-size: var(--font-size-lg);
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto var(--spacing-6);
        }

        .section-divider {
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
            margin: 0 auto;
            border-radius: var(--radius-full);
        }

        /* ===== BUTTONS ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-2);
            padding: var(--spacing-3) var(--spacing-6);
            font-size: var(--font-size-base);
            font-weight: 500;
            text-decoration: none;
            border: 2px solid transparent;
            border-radius: var(--radius-lg);
            cursor: pointer;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .btn-primary {
            background-color: var(--primary-color);
            color: var(--text-white);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

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

        .btn-secondary:hover {
            background-color: var(--primary-color);
            color: var(--text-white);
            transform: translateY(-2px);
        }

        .btn-outline {
            background-color: transparent;
            color: var(--text-primary);
            border-color: var(--text-light);
        }

        .btn-outline:hover {
            background-color: var(--bg-tertiary);
            border-color: var(--text-secondary);
        }

        /* ===== HEADER & NAVIGATION ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--bg-tertiary);
            z-index: var(--z-fixed);
            transition: var(--transition-base);
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-6);
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

        .nav-logo h2 {
            padding: 1px;
            font-size: var(--font-size-2xl);
            font-weight: 500;
            background: linear-gradient(90deg, #3b82f6, #6366f1);
            font-family: 'Poppins', sans-serif;
            /* Gradient text styling */
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            -webkit-text-fill-color: transparent;
            margin-bottom: 0;
            letter-spacing: 0.5px;
            transition: transform 0.3s ease;
        }

        .nav-logo h2:hover {
            transform: scale(1.05);
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: var(--spacing-8);
        }

        .nav-link {
            font-weight: 500;
            color: var(--text-secondary);
            position: relative;
            transition: var(--transition-base);
        }

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

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary-color);
            transition: var(--transition-base);
        }

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

        /* Mobile Navigation Toggle */
        .nav-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }

        .bar {
            width: 25px;
            height: 3px;
            background-color: var(--text-primary);
            transition: var(--transition-base);
        }

        /* ===== HERO SECTION ===== */
        .hero {
            padding: calc(80px + var(--spacing-20)) var(--spacing-6) var(--spacing-20);
            background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
        }

        .hero-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-16);
            align-items: center;
        }

        .hero-content {
            max-width: 600px;
        }

        .hero-title {
            font-size: var(--font-size-5xl);
            font-weight: 700;
            line-height: 1.1;
            margin-bottom: var(--spacing-6);
            color: var(--text-primary);
        }

        .highlight {
            color: var(--primary-color);
            position: relative;
        }

        .highlight::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
            border-radius: var(--radius-full);
        }

        .hero-subtitle {
            font-size: var(--font-size-xl);
            color: var(--text-secondary);
            margin-bottom: var(--spacing-8);
            line-height: 1.6;
        }

        .hero-buttons {
            display: flex;
            gap: var(--spacing-4);
            flex-wrap: wrap;
        }

        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-icon {
            width: 200px;
            height: 200px;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-xl);
            animation: float 6s ease-in-out infinite;
        }

        .hero-icon i {
            font-size: 80px;
            color: var(--text-white);
        }

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

        /* ===== VISION SECTION ===== */
        .vision {
            background-color: var(--bg-primary);
            padding: var(--spacing-20) 0;
        }

        .vision-content {
            max-width: 850px;
            margin: 0 auto;
            font-size: var(--font-size-lg);
            line-height: 1.9;
            color: var(--text-secondary);
            text-align: center;
        }

        .vision-content ul {
            margin: var(--spacing-6) 0;
            padding-left: 20px;
            text-align: left;
        }

        .vision-content li {
            margin-bottom: var(--spacing-3);
            position: relative;
            padding-left: var(--spacing-4);
        }

        .vision-content li::before {
            content: "";
            position: absolute;
            left: 0;
            color: var(--primary-color);
            font-weight: bold;
        }

        .vision-content strong {
            color: var(--primary-color);
        }

        /* ===== COURSES SECTION ===== */
        .courses {
            padding: var(--spacing-20) 0;
            background-color: var(--bg-secondary);
        }

        .courses-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: var(--spacing-8);
            margin-bottom: var(--spacing-12);
        }

        .course-card {
            background-color: var(--bg-primary);
            border-radius: var(--radius-2xl);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: var(--transition-slow);
            border: 1px solid var(--bg-tertiary);
            position: relative;
        }

        .course-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-xl);
        }

        .course-image {
            height: 200px;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        .course-image i {
            font-size: 4rem;
            color: var(--text-white);
            opacity: 0.9;
        }

        .course-type {
            position: absolute;
            top: var(--spacing-4);
            left: var(--spacing-4);
            background-color: rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(10px);
            color: var(--text-white);
            padding: var(--spacing-1) var(--spacing-3);
            border-radius: var(--radius-full);
            font-size: var(--font-size-xs);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .course-content {
            padding: var(--spacing-6);
        }

        .course-title {
            font-size: var(--font-size-xl);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-3);
            line-height: 1.3;
        }

        .course-description {
            font-size: var(--font-size-base);
            color: var(--text-secondary);
            margin-bottom: var(--spacing-6);
            line-height: 1.6;
        }

        .course-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: var(--spacing-6);
            padding-top: var(--spacing-4);
            border-top: 1px solid var(--bg-tertiary);
        }

        .course-price {
            font-size: var(--font-size-xl);
            font-weight: 700;
            color: var(--primary-color);
        }

        .course-btn {
            background-color: var(--success-color);
            color: var(--text-white);
            padding: var(--spacing-2) var(--spacing-4);
            border-radius: var(--radius-lg);
            font-size: var(--font-size-sm);
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition-base);
        }

        .course-btn:hover {
            background-color: #059669;
            color: var(--text-white);
            transform: translateY(-2px);
        }

        /* Course Type Colors */
        .bootcamp .course-image {
            background: linear-gradient(135deg, #8b5cf6, #a78bfa);
        }

        .webinar .course-image {
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
        }

        .workshop .course-image {
            background: linear-gradient(135deg, #ec4899, #f472b6);
        }

        .masterclass .course-image {
            background: linear-gradient(135deg, #06b6d4, #67e8f9);
        }

        /* ===== CONTACT SECTION ===== */
        .contact {
            padding: var(--spacing-20) 0;
            background-color: var(--bg-primary);
        }

        .contact-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-16);
            align-items: start;
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-8);
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-4);
            padding: var(--spacing-6);
            background-color: var(--bg-secondary);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-sm);
        }

        .contact-item i {
            font-size: var(--font-size-xl);
            color: var(--primary-color);
            margin-top: var(--spacing-1);
        }

        .contact-item h3 {
            font-size: var(--font-size-lg);
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: var(--spacing-2);
        }

        .contact-item p {
            font-size: var(--font-size-base);
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* Contact Form */
        .contact-form {
            background-color: var(--bg-secondary);
            padding: var(--spacing-8);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-sm);
        }

        .form-group {
            margin-bottom: var(--spacing-6);
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: var(--spacing-4);
            border: 2px solid var(--bg-tertiary);
            border-radius: var(--radius-lg);
            font-size: var(--font-size-base);
            font-family: var(--font-family);
            transition: var(--transition-base);
            background-color: var(--bg-primary);
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }

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

        /* ===== FOOTER ===== */
        .footer {
            background-color: var(--bg-dark);
            color: var(--text-white);
            padding: var(--spacing-16) 0 var(--spacing-8);
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-6);
        }

        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: var(--spacing-8);
        }

        .footer-info h3 {
            color: var(--text-white);
            margin-bottom: var(--spacing-2);
        }

        .footer-info p {
            color: var(--text-light);
            margin-bottom: 0;
        }

        .footer-links {
            display: flex;
            gap: var(--spacing-6);
        }

        .footer-links a {
            color: var(--text-light);
            transition: var(--transition-base);
        }

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

        .footer-bottom {
            text-align: center;
            padding-top: var(--spacing-8);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-bottom p {
            color: var(--text-light);
            margin-bottom: 0;
        }

        /* ===== BACK TO TOP BUTTON ===== */
        .back-to-top {
            position: fixed;
            bottom: var(--spacing-8);
            right: var(--spacing-8);
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: var(--text-white);
            border: none;
            border-radius: 50%;
            cursor: pointer;
            font-size: var(--font-size-lg);
            z-index: var(--z-fixed);
            transition: var(--transition-base);
            opacity: 0;
            visibility: hidden;
            transform: translateY(100px);
        }

        .back-to-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .back-to-top:hover {
            background-color: var(--primary-dark);
            transform: translateY(-4px);
        }

        /* ===== RESPONSIVE DESIGN ===== */
        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                left: -100%;
                top: 80px;
                flex-direction: column;
                background-color: var(--bg-primary);
                width: 100%;
                text-align: center;
                transition: 0.3s;
                box-shadow: var(--shadow-md);
                padding: var(--spacing-6) 0;
            }

            .nav-menu.active {
                left: 0;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-toggle.active .bar:nth-child(2) {
                opacity: 0;
            }

            .nav-toggle.active .bar:nth-child(1) {
                transform: translateY(7px) rotate(45deg);
            }

            .nav-toggle.active .bar:nth-child(3) {
                transform: translateY(-7px) rotate(-45deg);
            }

            .hero-container {
                grid-template-columns: 1fr;
                text-align: center;
                gap: var(--spacing-8);
            }

            .hero-title {
                font-size: var(--font-size-4xl);
            }

            .contact-content {
                grid-template-columns: 1fr;
                gap: var(--spacing-8);
            }

            .footer-content {
                flex-direction: column;
                gap: var(--spacing-4);
                text-align: center;
            }

            .courses-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 480px) {
            .section-container {
                padding: 0 var(--spacing-4);
            }

            .hero {
                padding: calc(80px + var(--spacing-12)) var(--spacing-4) var(--spacing-12);
            }

            .hero-title {
                font-size: var(--font-size-3xl);
            }

            .hero-buttons {
                justify-content: center;
            }

            .courses-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-6);
            }
        }

        /* ===== ANIMATIONS ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-in-up {
            animation: fadeInUp 0.6s ease-out;
        }

        .social-icons {
    display: flex;
    gap: 12px;
    margin-top: 15px;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.social-icon:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px) scale(1.05);
    color: white;
}

.social-icon.linkedin:hover {
    background: #0077b5;
    color: white;
}

.social-icon.whatsapp:hover {
    background: #25d366;
    color: white;
}

.social-icon svg {
    width: 20px;
    height: 20px;
}

@media (max-width: 768px) {
    .social-icons {
        justify-content: flex-start;
    }
}