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

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: bold;
    color: white;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(45deg, #FFD700, #FFA500);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.cta-button {
    background: linear-gradient(45deg, #8B5CF6, #EC4899);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.4);
}

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

.hero-visual img {
    width: 100%;
    max-height: 500px;
    object-fit: contain;
}

/* Catalog Section */
.catalog {
    padding: 5rem 0;
    background: #f5f7fa;
}

.section-title {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
    text-align: center;
    color: #333;
}

.section-description {
    font-size: 1.2rem;
    color: #666;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto 3rem;
    text-align: center;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.filter-button {
    background: #fff;
    border: 1px solid #8B5CF6;
    color: #8B5CF6;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.filter-button.active, .filter-button:hover {
    background: linear-gradient(45deg, #8B5CF6, #EC4899);
    color: white;
    border-color: transparent;
}

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

.course-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    text-align: center;
}

.course-card.hidden {
    display: none;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.course-image {
    height: 350px;
    background: linear-gradient(45deg, #8B5CF6, #EC4899);
    border-radius: 10px;
    margin-bottom: 1.5rem;
}

.course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
}

.course-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    color: #333;
}

.course-description {
    font-size: 1rem;
    color: #666;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.course-button {
    background: linear-gradient(45deg, #8B5CF6, #EC4899);
    color: white;
    border: none;
    padding: 0.8rem 2rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.course-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(139, 92, 246, 0.4);
}

/* Learning Path Section */
.learning-path {
    padding: 5rem 0;
    background: #1a1a2e;
    color: white;
}

.learning-path .section-title {
    color: violet;
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
    text-align: center;
}

.path-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.path-item {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.path-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.path-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.path-item p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.progress-bar {
    height: 10px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 5px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background: linear-gradient(45deg, #8B5CF6, #EC4899);
    transition: width 0.5s ease;
}

/* Benefits Section */
.benefits {
    padding: 5rem 0;
    background: #f5f7fa;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.benefit-item {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.benefit-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.benefit-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.benefit-item p {
    color: #666;
    line-height: 1.6;
}

/* Testimonials Section */
.testimonials {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 20px;
    font-size: 4rem;
    color: #8B5CF6;
    font-family: serif;
    opacity: 0.3;
}

.stars {
    color: #FFD700;
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

.testimonial-text {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #555;
    margin-bottom: 2rem;
    font-style: italic;
}

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

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(45deg, #8B5CF6, #EC4899);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.avatar-placeholder {
    color: white;
    font-weight: bold;
    font-size: 1.1rem;
}

.author-name {
    font-size: 1.1rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 0.25rem;
}

.author-role {
    color: #666;
    font-size: 0.9rem;
}

/* CTA Section */
.cta {
    padding: 5rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.cta-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.cta-description {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-visual {
    position: relative;
    height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.floating-ball img {
    height: 100%;
    width: 100%;
    object-fit: contain;
}


/* Responsive Design */
@media (max-width: 768px) {
    
    .hero-content, .cta-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .course-grid, .path-grid, .benefits-grid, .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-buttons {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .hero-description, .section-description, .cta-description {
        font-size: 1rem;
    }
    
    .course-card, .path-item, .benefit-item, .testimonial-card {
        padding: 1.5rem;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Animations */
.course-card, .path-item, .benefit-item, .testimonial-card {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.course-card:nth-child(1), .path-item:nth-child(1), .benefit-item:nth-child(1), .testimonial-card:nth-child(1) { animation-delay: 0.1s; }
.course-card:nth-child(2), .path-item:nth-child(2), .benefit-item:nth-child(2), .testimonial-card:nth-child(2) { animation-delay: 0.2s; }
.course-card:nth-child(3), .path-item:nth-child(3), .benefit-item:nth-child(3), .testimonial-card:nth-child(3) { animation-delay: 0.3s; }
.course-card:nth-child(4), .benefit-item:nth-child(4) { animation-delay: 0.4s; }
.course-card:nth-child(5) { animation-delay: 0.5s; }
.course-card:nth-child(6) { animation-delay: 0.6s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}