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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

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

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

.nav-brand h1 {
    color: #2c3e50;
    font-weight: 700;
    font-size: 1.8rem;
}

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

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

.nav-menu a:hover {
    color: #3498db;
}

.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
    margin-top: 80px;
}

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

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

.btn {
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: white;
    color: #667eea;
}

.reviews, .gallery, .tutorials {
    padding: 80px 0;
}

.reviews {
    background: #f8f9fa;
}

.reviews h2, .gallery h2, .tutorials h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

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

.review-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.review-card:hover {
    transform: translateY(-5px);
}

.review-image {
    height: 200px;
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.review-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.review-card:hover .review-thumbnail {
    transform: scale(1.05);
}

.placeholder-image {
    font-size: 3rem;
    opacity: 0.5;
}

.review-content {
    padding: 1.5rem;
}

.review-content h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.review-content p {
    color: #666;
    margin-bottom: 1rem;
}

.review-rating {
    color: #f39c12;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.review-link {
    color: #3498db;
    text-decoration: none;
    font-weight: 600;
}

.review-link:hover {
    text-decoration: underline;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    height: 250px;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gallery-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.gallery-item:hover .gallery-thumbnail {
    transform: scale(1.05);
}

.gallery-item .placeholder-image {
    font-size: 4rem;
    opacity: 0.3;
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: white;
    padding: 2rem 1rem 1rem;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

.gallery-overlay h4 {
    margin-bottom: 0.5rem;
}

.gallery-link {
    display: inline-block;
    margin-top: 0.5rem;
    padding: 0.4rem 1rem;
    background: rgba(52, 152, 219, 0.9);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.3s ease;
}

.gallery-link:hover {
    background: rgba(52, 152, 219, 1);
    transform: translateY(-1px);
}

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

.tutorial-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

.tutorial-card:hover {
    transform: translateY(-5px);
}

.tutorial-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.tutorial-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.tutorial-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

.tutorial-link {
    color: #3498db;
    text-decoration: none;
    font-weight: 600;
}

.tutorial-link:hover {
    text-decoration: underline;
}

.footer {
    background: #2c3e50;
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer p {
    margin: 0.5rem 0;
}

.footer a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: #5dade2;
    text-decoration: underline;
}

@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .hero {
        padding: 100px 20px 60px;
        margin-top: 120px;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .reviews, .gallery, .tutorials {
        padding: 60px 0;
    }
    
    .reviews h2, .gallery h2, .tutorials h2 {
        font-size: 2rem;
        margin-bottom: 2rem;
    }
    
    .review-grid, .gallery-grid, .tutorial-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .review-card, .tutorial-card {
        margin: 0 10px;
    }
}

@media (max-width: 480px) {
    .nav-brand h1 {
        font-size: 1.5rem;
    }
    
    .hero-content h2 {
        font-size: 1.8rem;
    }
    
    .btn {
        padding: 10px 25px;
        font-size: 0.9rem;
    }
    
    .container {
        padding: 0 15px;
    }
}