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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #2563eb;
}

.nav-brand i {
    margin-right: 0.5rem;
    font-size: 2rem;
}

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

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: #2563eb;
}

.nav-auth {
    display: flex;
    gap: 1rem;
}

.btn-login {
    background: transparent;
    border: 2px solid #2563eb;
    color: #2563eb;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-signup {
    background: #2563eb;
    border: none;
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-login:hover {
    background: #2563eb;
    color: white;
}

.btn-signup:hover {
    background: #1d4ed8;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

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

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="%23ffffff" opacity="0.3"/><circle cx="80" cy="30" r="1" fill="%23fbbf24" opacity="0.5"/><circle cx="40" cy="70" r="1.5" fill="%23ffffff" opacity="0.4"/><circle cx="90" cy="80" r="1" fill="%23fbbf24" opacity="0.3"/></svg>') repeat;
    animation: float 20s infinite linear;
}

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

.hero-content {
    flex: 1;
    max-width: 600px;
    z-index: 2;
}

.hero-badge {
    background: rgba(251, 191, 36, 0.2);
    color: #fbbf24;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: inline-block;
    border: 1px solid rgba(251, 191, 36, 0.3);
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-content span {
    color: #fbbf24;
    text-shadow: 0 0 20px rgba(251, 191, 36, 0.5);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

.hero-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    opacity: 0.9;
}

.hero-feature i {
    color: #10b981;
}

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

.btn-primary, .btn-secondary {
    padding: 1rem 2rem;
    border: none;
    border-radius: 30px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 600;
}

.btn-primary {
    background: linear-gradient(45deg, #fbbf24, #f59e0b);
    color: #333;
    box-shadow: 0 4px 15px rgba(251, 191, 36, 0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(251, 191, 36, 0.6);
}

.btn-secondary:hover {
    background: white;
    color: #333;
    transform: translateY(-2px);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
}

.floating-elements {
    position: relative;
    width: 400px;
    height: 400px;
}

.floating-card {
    position: absolute;
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: floatAround 6s ease-in-out infinite;
}

.floating-card:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
    color: #61dafb;
}

.floating-card:nth-child(2) {
    top: 10%;
    right: 20%;
    animation-delay: 1.5s;
    color: #68a063;
}

.floating-card:nth-child(3) {
    bottom: 30%;
    left: 20%;
    animation-delay: 3s;
    color: #306998;
}

.floating-card:nth-child(4) {
    bottom: 20%;
    right: 10%;
    animation-delay: 4.5s;
    color: #ff9900;
}

@keyframes floatAround {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    25% { transform: translateY(-20px) rotate(5deg); }
    50% { transform: translateY(-10px) rotate(-5deg); }
    75% { transform: translateY(-15px) rotate(3deg); }
}

/* Stats Section */
.stats {
    background: #f8fafc;
    padding: 4rem 0;
}

.stats .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item h3 {
    font-size: 3rem;
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-size: 1.2rem;
    color: #64748b;
}

/* Courses Section */
.courses {
    padding: 6rem 0;
}

.courses h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #1e293b;
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.course-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: transform 0.3s;
}

.course-card:hover {
    transform: translateY(-10px);
}

.course-image {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 3rem;
    text-align: center;
}

.course-image i {
    font-size: 4rem;
    color: white;
}

.course-content {
    padding: 2rem;
}

.course-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #1e293b;
}

.course-content p {
    color: #64748b;
    margin-bottom: 1.5rem;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.duration {
    color: #64748b;
}

.level {
    background: #e0f2fe;
    color: #0277bd;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.9rem;
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.price {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2563eb;
}

.btn-enroll {
    background: #2563eb;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-enroll:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
}

/* Success Stories */
.success-stories {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    padding: 6rem 0;
    color: white;
}

.success-stories h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: white;
}

.testimonials-slider {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.testimonial {
    display: none;
    text-align: center;
    padding: 2rem;
}

.testimonial.active {
    display: block;
    animation: fadeIn 0.5s ease-in;
}

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

.testimonial-content {
    background: rgba(255, 255, 255, 0.1);
    padding: 3rem;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.stars {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.testimonial p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    font-style: italic;
}

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

.author-avatar {
    font-size: 3rem;
}

.author-info h4 {
    margin-bottom: 0.5rem;
    color: #fbbf24;
}

.author-info span {
    color: #cbd5e1;
    font-size: 0.9rem;
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s;
}

.dot.active {
    background: #fbbf24;
    transform: scale(1.2);
}

/* Learning Path */
.learning-path {
    padding: 6rem 0;
    background: #f8fafc;
}

.learning-path h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 4rem;
    color: #1e293b;
}

.path-timeline {
    display: flex;
    justify-content: space-between;
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}

.path-timeline::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #2563eb, #fbbf24);
    z-index: 1;
}

.timeline-item {
    text-align: center;
    position: relative;
    z-index: 2;
}

.timeline-icon {
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border: 3px solid #2563eb;
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.timeline-content p {
    color: #64748b;
    font-size: 0.9rem;
}

/* Demo Class */
.demo-class {
    padding: 6rem 0;
    background: linear-gradient(135deg, #059669 0%, #10b981 100%);
    color: white;
}

.demo-content {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.demo-info {
    flex: 1;
}

.demo-badge {
    background: #fbbf24;
    color: #333;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: inline-block;
    font-weight: 600;
    animation: pulse 2s infinite;
}

.demo-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: white;
}

.demo-info p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

.demo-detail {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 1rem;
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.demo-detail i {
    font-size: 1.5rem;
    color: #fbbf24;
    width: 30px;
}

.demo-detail h4 {
    margin-bottom: 0.25rem;
    color: #fbbf24;
    font-size: 0.9rem;
}

.demo-detail span {
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
}

.demo-preview {
    flex: 1;
}

/* Live Classes */
.live-classes {
    padding: 6rem 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
}

.live-content {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.live-info {
    flex: 1;
}

.live-badge {
    background: #ef4444;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: inline-block;
    animation: pulse 2s infinite;
}

.live-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: white;
}

.live-info p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.live-features {
    margin-bottom: 2rem;
}

.live-feature {
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.live-preview {
    flex: 1;
}

.video-player {
    background: #000;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.video-controls {
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(45deg, #1e293b, #334155);
}

.play-btn {
    font-size: 2rem;
    color: #fbbf24;
}

.video-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.video-stats {
    padding: 1rem 2rem;
    background: rgba(0,0,0,0.8);
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
}

/* Companies */
.companies {
    padding: 4rem 0;
    background: white;
}

.companies h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #64748b;
}

.companies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    align-items: center;
}

.company-logo {
    text-align: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #64748b;
    padding: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    transition: all 0.3s;
}

.company-logo:hover {
    color: #2563eb;
    border-color: #2563eb;
    transform: translateY(-5px);
}

/* Newsletter */
.newsletter {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    padding: 4rem 0;
    color: white;
}

.newsletter-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

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

.newsletter p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    max-width: 400px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 1rem;
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    outline: none;
}

.newsletter-form button {
    padding: 1rem 2rem;
    background: #fbbf24;
    color: #333;
    border: none;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.newsletter-form button:hover {
    background: #f59e0b;
    transform: translateY(-2px);
}

/* Features Section */
.features {
    background: #f8fafc;
    padding: 6rem 0;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #1e293b;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.feature-item {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

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

.feature-item i {
    font-size: 3rem;
    color: #2563eb;
    margin-bottom: 1rem;
}

.feature-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #1e293b;
}

.feature-item p {
    color: #64748b;
}

/* Footer */
.footer {
    background: #1e293b;
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3, .footer-section h4 {
    margin-bottom: 1rem;
    color: #fbbf24;
}

.footer-section p {
    margin-bottom: 0.5rem;
    color: #cbd5e1;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section ul li a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: #fbbf24;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    color: #cbd5e1;
    font-size: 1.5rem;
    transition: color 0.3s;
}

.social-links a:hover {
    color: #fbbf24;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #94a3b8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu, .nav-auth {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 2rem 1rem;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-features {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .floating-elements {
        width: 300px;
        height: 300px;
    }
    
    .course-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .stats .container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .path-timeline {
        flex-direction: column;
        gap: 2rem;
    }
    
    .path-timeline::before {
        display: none;
    }
    
    .demo-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .live-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .companies-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .newsletter-form {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 1rem;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .stats .container {
        grid-template-columns: 1fr;
    }
    
    .course-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .course-card {
        margin: 0 1rem;
    }
    
    .companies-grid {
        grid-template-columns: 1fr;
    }
    
    .floating-elements {
        width: 250px;
        height: 250px;
    }
    
    .floating-card {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
}