/* === CSS Reset & Base === */
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --bg-primary: #0a0a0f;
            --bg-secondary: #0f0f18;
            --bg-card: #141420;
            --bg-card-hover: #1a1a2e;
            --text-primary: #e8e8f0;
            --text-secondary: #a0a0b8;
            --text-muted: #707088;
            --accent-primary: #ff3d71;
            --accent-secondary: #ff6b6b;
            --accent-gradient: linear-gradient(135deg, #ff3d71 0%, #ff6b6b 50%, #ff8e53 100%);
            --border-color: #232338;
            --border-glow: rgba(255, 61, 113, 0.3);
            --font-heading: 'Inter', sans-serif;
            --font-mono: 'JetBrains Mono', monospace;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
        }

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

        body {
            font-family: var(--font-heading);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            cursor: none;
        }

        a {
            text-decoration: none;
            color: inherit;
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            display: block;
        }

        /* === Custom Cursor === */
        .cursor {
            width: 8px;
            height: 8px;
            background: var(--accent-primary);
            border-radius: 50%;
            position: fixed;
            pointer-events: none;
            z-index: 9999;
            transform: translate(-50%, -50%);
            transition: width 0.3s, height 0.3s, background 0.3s;
            mix-blend-mode: difference;
        }
        .cursor-follower {
            width: 35px;
            height: 35px;
            border: 1px solid rgba(255, 61, 113, 0.5);
            border-radius: 50%;
            position: fixed;
            pointer-events: none;
            z-index: 9998;
            transform: translate(-50%, -50%);
            transition: transform 0.1s ease-out, width 0.3s, height 0.3s, border-color 0.3s;
            backdrop-filter: blur(2px);
        }
        .cursor.hover {
            width: 12px;
            height: 12px;
            background: #fff;
        }
        .cursor-follower.hover {
            width: 50px;
            height: 50px;
            border-color: var(--accent-secondary);
            background: rgba(255, 61, 113, 0.1);
        }

        /* === Navigation === */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 1.2rem 0;
            transition: var(--transition-smooth);
            background: transparent;
        }
        .navbar.scrolled {
            background: rgba(10, 10, 15, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            padding: 0.8rem 0;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }
        .nav-container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .nav-logo {
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .logo-text {
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 1.6rem;
            letter-spacing: 2px;
            color: var(--text-primary);
        }
        .logo-highlight {
            color: var(--accent-primary);
            font-weight: 800;
        }
        .logo-est {
            font-size: 0.65rem;
            letter-spacing: 3px;
            color: var(--text-muted);
            margin-top: -4px;
            font-weight: 500;
        }
        .nav-menu {
            display: flex;
            gap: 2.5rem;
        }
        .nav-link {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition-fast);
            position: relative;
            padding: 0.3rem 0;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-primary);
            transition: width var(--transition-fast);
        }
        .nav-link:hover,
        .nav-link.active {
            color: #fff;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }
        .nav-cta {
            display: flex;
            align-items: center;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            z-index: 1001;
        }
        .hamburger span {
            display: block;
            width: 25px;
            height: 2px;
            background: var(--text-primary);
            transition: var(--transition-fast);
        }

        /* === Buttons === */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 600;
            font-family: var(--font-heading);
            border: none;
            cursor: pointer;
            transition: var(--transition-smooth);
            letter-spacing: 0.5px;
            border-radius: 8px;
            text-transform: uppercase;
            font-size: 0.85rem;
            padding: 0.8rem 1.8rem;
            position: relative;
            overflow: hidden;
        }
        .btn-primary {
            background: var(--accent-gradient);
            color: #fff;
            box-shadow: 0 8px 25px rgba(255, 61, 113, 0.4);
            z-index: 1;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 35px rgba(255, 61, 113, 0.6);
        }
        .btn-outline {
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            background: transparent;
        }
        .btn-outline:hover {
            border-color: var(--accent-primary);
            background: rgba(255, 61, 113, 0.05);
            box-shadow: 0 0 20px rgba(255, 61, 113, 0.2);
        }
        .btn-sm {
            padding: 0.6rem 1.4rem;
            font-size: 0.8rem;
        }
        .btn-lg {
            padding: 1rem 2.2rem;
            font-size: 0.9rem;
        }

        /* === Hero Section (Courses) === */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: radial-gradient(ellipse at 30% 50%, rgba(255, 61, 113, 0.08) 0%, transparent 50%);
        }
        .hero-grid {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 60px 60px;
            z-index: 0;
        }
        .hero-particles {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
        }
        .hero-container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 8rem 2rem 4rem;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 61, 113, 0.1);
            border: 1px solid rgba(255, 61, 113, 0.3);
            padding: 0.5rem 1.2rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--accent-primary);
            margin-bottom: 2rem;
            font-family: var(--font-mono);
        }
        .badge-dot {
            width: 8px;
            height: 8px;
            background: var(--accent-primary);
            border-radius: 50%;
            display: inline-block;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0% {
                box-shadow: 0 0 0 0 rgba(255, 61, 113, 0.7);
            }
            70% {
                box-shadow: 0 0 0 8px rgba(255, 61, 113, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(255, 61, 113, 0);
            }
        }

        .hero-title {
            font-size: 4rem;
            font-weight: 800;
            line-height: 1.1;
            letter-spacing: -1px;
            margin-bottom: 1.5rem;
        }
        .gradient-text {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-description {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 550px;
            margin-bottom: 2.5rem;
            line-height: 1.7;
        }

        /* Hero Visual — Terminal */
        .hero-visual {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-orb {
            position: absolute;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 61, 113, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            filter: blur(60px);
            animation: float 8s ease-in-out infinite;
            z-index: 0;
        }
        .hero-orb-secondary {
            position: absolute;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 142, 83, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            filter: blur(50px);
            top: 60px;
            right: -40px;
            animation: float 10s ease-in-out infinite reverse;
        }
        @keyframes float {
            0%,
            100% {
                transform: translate(0, 0);
            }
            50% {
                transform: translate(20px, -30px);
            }
        }

        .hero-card {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: 450px;
        }
        .card-terminal {
            background: #0d0d1a;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6), 0 0 30px rgba(255, 61, 113, 0.15);
            backdrop-filter: blur(20px);
        }
        .terminal-dots {
            display: flex;
            gap: 8px;
            padding: 12px 16px;
            background: #0a0a12;
            border-bottom: 1px solid #1e1e2e;
        }
        .terminal-dots span {
            width: 12px;
            height: 12px;
            border-radius: 50%;
        }
        .terminal-dots span:nth-child(1) {
            background: #ff5f56;
        }
        .terminal-dots span:nth-child(2) {
            background: #ffbd2e;
        }
        .terminal-dots span:nth-child(3) {
            background: #27ca40;
        }

        .terminal-content {
            padding: 20px;
            font-family: var(--font-mono);
            font-size: 0.85rem;
        }
        .terminal-line {
            margin-bottom: 8px;
            color: #c0caf5;
        }
        .terminal-prompt {
            color: var(--accent-primary);
            font-weight: 600;
        }
        .terminal-cmd {
            color: #e8e8f0;
        }
        .terminal-output {
            color: #565f89;
            margin-left: 10px;
        }
        .terminal-success {
            color: #9ece6a;
            margin-left: 10px;
        }
        .terminal-warning {
            color: #e0af68;
            margin-left: 10px;
        }
        .cursor-blink {
            background: #c0caf5;
            animation: blink 1s step-end infinite;
        }
        @keyframes blink {
            50% {
                opacity: 0;
            }
        }

        .hero-scroll-indicator {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 0.7rem;
            letter-spacing: 2px;
            text-transform: uppercase;
            z-index: 2;
        }
        .scroll-line {
            width: 1px;
            height: 40px;
            background: linear-gradient(to bottom, var(--accent-primary), transparent);
            animation: scrollAnim 2s infinite;
        }
        @keyframes scrollAnim {
            0% {
                transform: scaleY(0);
                transform-origin: top;
            }
            50% {
                transform: scaleY(1);
                transform-origin: top;
            }
            50.1% {
                transform-origin: bottom;
            }
            100% {
                transform: scaleY(0);
                transform-origin: bottom;
            }
        }

        /* === Courses Preview Section === */
        .courses-preview {
            background: var(--bg-secondary);
            padding: 6rem 2rem;
        }
        .container {
            max-width: 1300px;
            margin: 0 auto;
        }
        .section-header {
            text-align: center;
            margin-bottom: 4rem;
        }
        .section-tag {
            font-family: var(--font-mono);
            font-size: 0.8rem;
            color: var(--accent-primary);
            letter-spacing: 2px;
            text-transform: uppercase;
            display: block;
            margin-bottom: 1rem;
        }
        .section-title {
            font-size: 2.8rem;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 1rem;
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }

        .courses-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .course-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 2.2rem;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
            text-align: center;
            opacity: 0.7;
            filter: grayscale(0.4);
            pointer-events: none;
        }
        .course-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--accent-gradient);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }
        .course-card .coming-soon-badge {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: var(--accent-primary);
            color: #fff;
            font-size: 0.6rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            font-family: var(--font-mono);
        }
        .course-card .course-icon {
            width: 60px;
            height: 60px;
            background: rgba(255, 61, 113, 0.08);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.2rem;
            font-size: 1.8rem;
            color: var(--accent-primary);
        }
        .course-card h3 {
            font-size: 1.3rem;
            margin-bottom: 0.5rem;
            color: #fff;
        }
        .course-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .course-card .lock-icon {
            display: inline-block;
            margin-top: 1rem;
            font-size: 1.2rem;
            color: var(--text-muted);
        }

        /* === Waitlist / Notify Section === */
        .waitlist {
            background: var(--bg-primary);
            padding: 5rem 2rem;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .waitlist-inner {
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
        }
        .waitlist-inner h2 {
            font-size: 2.2rem;
            margin-bottom: 1rem;
        }
        .waitlist-inner p {
            color: var(--text-secondary);
            margin-bottom: 2rem;
        }
        .waitlist-form {
            display: flex;
            gap: 1rem;
            max-width: 500px;
            margin: 0 auto;
        }
        .waitlist-form input {
            flex: 1;
            padding: 0.9rem 1.2rem;
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            color: #fff;
            font-family: var(--font-heading);
            font-size: 0.95rem;
            outline: none;
            transition: var(--transition-fast);
        }
        .waitlist-form input:focus {
            border-color: var(--accent-primary);
            box-shadow: 0 0 0 3px rgba(255, 61, 113, 0.1);
        }
        .waitlist-form input::placeholder {
            color: var(--text-muted);
        }
        .waitlist-form .btn {
            flex-shrink: 0;
        }

        /* === Footer === */
        .footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 4rem 0 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }
        .footer-logo {
            font-family: var(--font-mono);
            font-size: 1.8rem;
            font-weight: 800;
        }
        .footer-tagline {
            display: block;
            font-size: 0.7rem;
            letter-spacing: 3px;
            color: var(--text-muted);
        }
        .footer-brand p {
            margin-top: 1rem;
            color: var(--text-muted);
        }
        .footer-links h4,
        .footer-newsletter h4 {
            color: #fff;
            margin-bottom: 1.2rem;
        }
        .footer-links ul li {
            margin-bottom: 0.7rem;
        }
        .footer-links ul li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: color 0.2s;
        }
        .footer-links ul li a:hover {
            color: var(--accent-primary);
        }
        .newsletter-form {
            display: flex;
            margin-top: 1rem;
        }
        .newsletter-form input {
            flex: 1;
            padding: 0.8rem;
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            border-radius: 8px 0 0 8px;
            color: #fff;
        }
        .newsletter-form button {
            background: var(--accent-gradient);
            border: none;
            padding: 0 1.2rem;
            border-radius: 0 8px 8px 0;
            color: #fff;
            cursor: pointer;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            padding-top: 2rem;
            border-top: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .footer-bottom-links {
            display: flex;
            gap: 1.5rem;
        }
        .footer-bottom-links a {
            color: var(--text-muted);
            transition: color 0.2s;
        }
        .footer-bottom-links a:hover {
            color: var(--accent-primary);
        }

        /* === Toast === */
        .toast {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--bg-card);
            border: 1px solid var(--accent-primary);
            padding: 1rem 2rem;
            border-radius: 12px;
            display: flex;
            align-items: center;
            gap: 0.8rem;
            color: #fff;
            transform: translateX(120%);
            transition: transform 0.4s ease;
            z-index: 10000;
        }
        .toast.show {
            transform: translateX(0);
        }

        /* === Responsive === */
        @media (max-width: 1024px) {
            .hero-container {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .hero-description {
                margin-left: auto;
                margin-right: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 0;
                right: -100%;
                width: 70%;
                height: 100vh;
                background: var(--bg-card);
                flex-direction: column;
                padding: 6rem 2rem;
                transition: right 0.4s ease;
                border-left: 1px solid var(--border-color);
            }
            .nav-menu.active {
                right: 0;
            }
            .hamburger {
                display: flex;
            }
            .hero-title {
                font-size: 2.8rem;
            }
            .section-title {
                font-size: 2.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 1rem;
                text-align: center;
            }
            .waitlist-form {
                flex-direction: column;
            }
            .waitlist-form .btn {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 480px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-container {
                padding: 6rem 1.2rem 3rem;
            }
            .terminal-content {
                font-size: 0.7rem;
                padding: 14px;
            }
            .courses-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .waitlist-inner h2 {
                font-size: 1.6rem;
            }
        }