:root {
--primary-color: #2563eb;
--primary-dark: #1d4ed8;
--secondary-color: #64748b;
--accent-color: #f59e0b;
--text-dark: #1e293b;
--text-light: #64748b;
--bg-light: #f8fafc;
--bg-white: #ffffff;
--border-color: #e2e8f0;
--success-color: #10b981;
--error-color: #ef4444;
--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);
--transition: all 0.3s ease;
}

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

body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
color: var(--text-dark);
line-height: 1.6;
background-color: var(--bg-white);
}

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

img {
max-width: 100%;
height: auto;
display: block;
}

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

ul {
list-style: none;
}

.cookie-banner {
position: fixed;
bottom: 0;
left: 0;
right: 0;
background: var(--text-dark);
color: var(--bg-white);
padding: 20px;
z-index: 10000;
transform: translateY(100%);
transition: transform 0.3s ease;
}

.cookie-banner.show {
transform: translateY(0);
}

.cookie-content {
max-width: 1200px;
margin: 0 auto;
display: flex;
justify-content: space-between;
align-items: center;
gap: 20px;
flex-wrap: wrap;
}

.cookie-buttons {
display: flex;
gap: 10px;
}

.navbar {
background: var(--bg-white);
box-shadow: var(--shadow-sm);
position: sticky;
top: 0;
z-index: 1000;
}

.nav-wrapper {
display: flex;
justify-content: space-between;
align-items: center;
padding: 15px 0;
}

.logo {
display: flex;
align-items: center;
gap: 10px;
font-weight: 700;
font-size: 1.25rem;
color: var(--primary-color);
}

.logo img {
width: 40px;
height: 40px;
border-radius: 8px;
}

.nav-menu {
display: flex;
gap: 30px;
align-items: center;
}

.nav-menu a {
color: var(--text-dark);
font-weight: 500;
position: relative;
}

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

.cart-link {
position: relative;
display: flex;
align-items: center;
}

.cart-count {
position: absolute;
top: -8px;
right: -8px;
background: var(--accent-color);
color: var(--bg-white);
border-radius: 50%;
width: 20px;
height: 20px;
display: flex;
align-items: center;
justify-content: center;
font-size: 0.75rem;
font-weight: 700;
}

.hero {
background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
color: var(--bg-white);
padding: 80px 0;
text-align: center;
}

.hero-content h1 {
font-size: 3rem;
margin-bottom: 20px;
font-weight: 800;
}

.hero-content p {
font-size: 1.25rem;
margin-bottom: 30px;
opacity: 0.95;
max-width: 600px;
margin-left: auto;
margin-right: auto;
}

.btn-primary,
.btn-secondary {
display: inline-block;
padding: 12px 30px;
border-radius: 8px;
font-weight: 600;
transition: var(--transition);
border: none;
cursor: pointer;
font-size: 1rem;
}

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

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

.btn-secondary {
background: var(--bg-white);
color: var(--primary-color);
border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
background: var(--primary-color);
color: var(--bg-white);
}

.btn-large {
padding: 15px 40px;
font-size: 1.1rem;
}

.features {
padding: 80px 0;
background: var(--bg-light);
}

.features h2,
.products h2,
.about-courses h2 {
text-align: center;
font-size: 2.5rem;
margin-bottom: 50px;
color: var(--text-dark);
}

.features-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
gap: 30px;
margin-bottom: 60px;
}

.feature-card {
background: var(--bg-white);
padding: 30px;
border-radius: 12px;
text-align: center;
transition: var(--transition);
box-shadow: var(--shadow-sm);
}

.feature-card:hover {
transform: translateY(-5px);
box-shadow: var(--shadow-lg);
}

.feature-icon {
color: var(--primary-color);
margin-bottom: 20px;
}

.feature-card h3 {
margin-bottom: 15px;
font-size: 1.25rem;
}

.stats {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
gap: 30px;
text-align: center;
}

.stat-item {
display: flex;
flex-direction: column;
gap: 10px;
}

.stat-number {
font-size: 2.5rem;
font-weight: 800;
color: var(--primary-color);
}

.stat-label {
color: var(--text-light);
font-size: 1rem;
}

.about-courses {
padding: 80px 0;
}

.about-content {
max-width: 900px;
margin: 0 auto 40px;
text-align: justify;
}

.about-content p {
margin-bottom: 20px;
font-size: 1.1rem;
line-height: 1.8;
}

.quality-badges {
display: flex;
justify-content: center;
gap: 40px;
flex-wrap: wrap;
}

.badge {
display: flex;
align-items: center;
gap: 10px;
color: var(--primary-color);
font-weight: 600;
}

.products {
padding: 80px 0;
}

.products-grid {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
gap: 30px;
}

.product-card {
background: var(--bg-white);
border-radius: 12px;
overflow: hidden;
box-shadow: var(--shadow-md);
transition: var(--transition);
}

.product-card:hover {
transform: translateY(-5px);
box-shadow: var(--shadow-lg);
}

.product-image {
position: relative;
overflow: hidden;
aspect-ratio: 4/3;
}

.product-image img {
width: 100%;
height: 100%;
object-fit: cover;
transition: var(--transition);
}

.product-card:hover .product-image img {
transform: scale(1.05);
}

.product-info {
padding: 25px;
}

.product-info h3 {
margin-bottom: 10px;
font-size: 1.25rem;
}

.product-info p {
color: var(--text-light);
margin-bottom: 15px;
}

.product-price {
font-size: 1.5rem;
font-weight: 700;
color: var(--primary-color);
margin-bottom: 15px;
}

.product-detail {
padding: 60px 0;
}

.product-detail-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 60px;
margin-bottom: 60px;
}

.product-detail-image img {
border-radius: 12px;
box-shadow: var(--shadow-lg);
}

.product-rating {
display: flex;
align-items: center;
gap: 10px;
margin-bottom: 20px;
}

.stars {
color: var(--accent-color);
font-size: 1.25rem;
}

.rating-text {
color: var(--text-light);
}

.product-price-large {
font-size: 2.5rem;
font-weight: 800;
color: var(--primary-color);
margin-bottom: 20px;
}

.product-description {
font-size: 1.1rem;
margin-bottom: 25px;
line-height: 1.8;
}

.product-features {
margin-bottom: 30px;
}

.product-features h3 {
margin-bottom: 15px;
}

.product-features ul {
list-style: none;
}

.product-features li {
padding: 8px 0;
padding-left: 25px;
position: relative;
}

.product-features li:before {
content: "✓";
position: absolute;
left: 0;
color: var(--success-color);
font-weight: 700;
}

.product-meta {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 15px;
margin-bottom: 30px;
}

.meta-item {
display: flex;
align-items: center;
gap: 10px;
color: var(--text-light);
}

.meta-item svg {
color: var(--primary-color);
}

.product-actions {
display: flex;
gap: 15px;
flex-wrap: wrap;
}

.product-detailed-description {
max-width: 900px;
margin: 0 auto;
}

.product-detailed-description h2,
.product-detailed-description h3 {
margin-top: 30px;
margin-bottom: 15px;
}

.product-detailed-description ul {
list-style: disc;
padding-left: 25px;
}

.product-detailed-description li {
margin-bottom: 8px;
}

.cta-section {
background: var(--primary-color);
color: var(--bg-white);
padding: 80px 0;
text-align: center;
}

.cta-section h2 {
font-size: 2.5rem;
margin-bottom: 20px;
}

.cta-section p {
font-size: 1.25rem;
margin-bottom: 30px;
}

.footer {
background: var(--text-dark);
color: var(--bg-white);
padding: 60px 0 20px;
}

.footer-content {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
gap: 40px;
margin-bottom: 40px;
}

.footer-section h4 {
margin-bottom: 20px;
font-size: 1.25rem;
}

.footer-section p,
.footer-section li {
color: rgba(255, 255, 255, 0.8);
margin-bottom: 10px;
}

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

.social-links {
display: flex;
gap: 15px;
margin-top: 20px;
}

.social-links a {
display: flex;
align-items: center;
justify-content: center;
width: 40px;
height: 40px;
background: rgba(255, 255, 255, 0.1);
border-radius: 50%;
transition: var(--transition);
}

.social-links a:hover {
background: var(--primary-color);
transform: translateY(-3px);
}

.contact-info li {
display: flex;
gap: 10px;
margin-bottom: 15px;
align-items: flex-start;
}

.contact-info svg {
flex-shrink: 0;
margin-top: 3px;
}

.footer-bottom {
border-top: 1px solid rgba(255, 255, 255, 0.1);
padding-top: 20px;
text-align: center;
color: rgba(255, 255, 255, 0.6);
}

.page-views {
margin-top: 10px;
font-size: 0.9rem;
}

.cart-page,
.checkout-page,
.success-page,
.contact-page {
padding: 60px 0;
min-height: 60vh;
}

.cart-page h1,
.checkout-page h1,
.contact-page h1 {
margin-bottom: 30px;
}

.empty-cart {
text-align: center;
padding: 60px 20px;
}

.empty-cart svg {
margin: 0 auto 30px;
color: var(--text-light);
}

.empty-cart h2 {
margin-bottom: 15px;
}

.cart-items {
margin-bottom: 30px;
}

.cart-item {
display: flex;
gap: 20px;
padding: 20px;
background: var(--bg-white);
border-radius: 12px;
margin-bottom: 15px;
box-shadow: var(--shadow-sm);
}

.cart-item-image {
width: 120px;
height: 90px;
border-radius: 8px;
overflow: hidden;
}

.cart-item-image img {
width: 100%;
height: 100%;
object-fit: cover;
}

.cart-item-details {
flex: 1;
}

.cart-item-details h3 {
margin-bottom: 8px;
}

.cart-item-price {
font-size: 1.25rem;
font-weight: 700;
color: var(--primary-color);
}

.cart-item-remove {
background: var(--error-color);
color: var(--bg-white);
border: none;
padding: 8px 15px;
border-radius: 6px;
cursor: pointer;
transition: var(--transition);
}

.cart-item-remove:hover {
opacity: 0.8;
}

.cart-summary {
background: var(--bg-light);
padding: 30px;
border-radius: 12px;
max-width: 400px;
margin-left: auto;
}

.cart-summary h3 {
margin-bottom: 20px;
}

.summary-row {
display: flex;
justify-content: space-between;
margin-bottom: 15px;
}

.summary-row.total {
font-size: 1.5rem;
font-weight: 700;
color: var(--primary-color);
padding-top: 15px;
border-top: 2px solid var(--border-color);
}

.cart-summary .btn-primary,
.cart-summary .btn-secondary {
width: 100%;
margin-top: 15px;
text-align: center;
}

.checkout-grid {
display: grid;
grid-template-columns: 1.5fr 1fr;
gap: 40px;
}

.checkout-form h2,
.order-summary h2 {
margin-bottom: 25px;
}

.form-group {
margin-bottom: 20px;
}

.form-group label {
display: block;
margin-bottom: 8px;
font-weight: 600;
color: var(--text-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
width: 100%;
padding: 12px;
border: 1px solid var(--border-color);
border-radius: 8px;
font-size: 1rem;
transition: var(--transition);
}

.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-row {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 20px;
}

.order-summary {
background: var(--bg-light);
padding: 30px;
border-radius: 12px;
height: fit-content;
position: sticky;
top: 100px;
}

.checkout-item {
display: flex;
justify-content: space-between;
padding: 15px 0;
border-bottom: 1px solid var(--border-color);
}

.summary-totals {
margin-top: 20px;
}

.secure-checkout {
display: flex;
align-items: center;
justify-content: center;
gap: 10px;
margin-top: 20px;
color: var(--text-light);
}

.success-page {
display: flex;
align-items: center;
justify-content: center;
}

.success-content {
text-align: center;
max-width: 600px;
}

.success-icon {
margin: 0 auto 30px;
color: var(--success-color);
}

.success-content h1 {
color: var(--success-color);
margin-bottom: 20px;
}

.success-message {
font-size: 1.25rem;
margin-bottom: 20px;
}

.success-actions {
display: flex;
gap: 15px;
justify-content: center;
margin: 30px 0;
flex-wrap: wrap;
}

.success-info {
background: var(--bg-light);
padding: 30px;
border-radius: 12px;
text-align: left;
margin-top: 30px;
}

.success-info h3 {
margin-bottom: 15px;
}

.success-info ul {
list-style: disc;
padding-left: 25px;
}

.success-info li {
margin-bottom: 10px;
}

.contact-grid {
display: grid;
grid-template-columns: 1.5fr 1fr;
gap: 40px;
}

.contact-details {
margin-bottom: 30px;
}

.contact-detail-item {
display: flex;
gap: 20px;
margin-bottom: 30px;
}

.contact-icon {
color: var(--primary-color);
flex-shrink: 0;
}

.contact-detail-item h3 {
margin-bottom: 8px;
}

.social-links-large {
display: flex;
gap: 15px;
}

.social-links-large a {
display: flex;
align-items: center;
justify-content: center;
width: 50px;
height: 50px;
background: var(--bg-light);
border-radius: 50%;
color: var(--primary-color);
transition: var(--transition);
}

.social-links-large a:hover {
background: var(--primary-color);
color: var(--bg-white);
transform: translateY(-3px);
}

.page-intro {
text-align: center;
font-size: 1.1rem;
color: var(--text-light);
margin-bottom: 40px;
}

.notification {
position: fixed;
top: 80px;
right: 20px;
padding: 15px 25px;
background: var(--success-color);
color: var(--bg-white);
border-radius: 8px;
box-shadow: var(--shadow-lg);
transform: translateX(400px);
transition: transform 0.3s ease;
z-index: 9999;
}

.notification.show {
transform: translateX(0);
}

.notification.error {
background: var(--error-color);
}

.blog-page {
padding: 60px 0;
}

.blog-grid {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
gap: 30px;
}

.blog-card {
background: var(--bg-white);
border-radius: 12px;
overflow: hidden;
box-shadow: var(--shadow-md);
transition: var(--transition);
}

.blog-card:hover {
transform: translateY(-5px);
box-shadow: var(--shadow-lg);
}

.blog-card img {
width: 100%;
height: 200px;
object-fit: cover;
}

.blog-card-content {
padding: 25px;
}

.blog-card-meta {
display: flex;
justify-content: space-between;
margin-bottom: 15px;
font-size: 0.9rem;
}

.category {
background: var(--primary-color);
color: var(--bg-white);
padding: 4px 12px;
border-radius: 20px;
font-size: 0.85rem;
}

.read-time {
color: var(--text-light);
}

.blog-card h2 {
font-size: 1.25rem;
margin-bottom: 12px;
}

.blog-card p {
color: var(--text-light);
margin-bottom: 15px;
}

.post-date {
color: var(--text-light);
font-size: 0.9rem;
}

.blog-post {
padding: 60px 0;
}

.blog-post .container {
display: grid;
grid-template-columns: 1fr 300px;
gap: 60px;
}

.post-header {
margin-bottom: 40px;
}

.post-meta {
display: flex;
gap: 20px;
margin-bottom: 20px;
color: var(--text-light);
}

.post-excerpt {
font-size: 1.25rem;
color: var(--text-light);
line-height: 1.8;
}

.post-featured-image {
margin-bottom: 40px;
border-radius: 12px;
overflow: hidden;
}

.post-body {
font-size: 1.1rem;
line-height: 1.9;
}

.post-body h2 {
margin-top: 40px;
margin-bottom: 20px;
font-size: 2rem;
}

.post-body h3 {
margin-top: 30px;
margin-bottom: 15px;
font-size: 1.5rem;
}

.post-body p {
margin-bottom: 20px;
}

.post-body ul,
.post-body ol {
margin-bottom: 20px;
padding-left: 30px;
}

.post-body li {
margin-bottom: 10px;
}

.post-tags {
display: flex;
gap: 10px;
flex-wrap: wrap;
margin: 40px 0;
}

.tag {
background: var(--bg-light);
padding: 6px 15px;
border-radius: 20px;
font-size: 0.9rem;
color: var(--text-dark);
}

.post-author {
display: flex;
gap: 20px;
padding: 30px;
background: var(--bg-light);
border-radius: 12px;
margin: 40px 0;
}

.author-avatar img {
width: 80px;
height: 80px;
border-radius: 50%;
}

.author-info h3 {
margin-bottom: 10px;
}

.post-navigation {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 20px;
margin: 40px 0;
}

.nav-link {
padding: 20px;
background: var(--bg-light);
border-radius: 12px;
transition: var(--transition);
}

.nav-link:hover {
background: var(--primary-color);
color: var(--bg-white);
}

.nav-link span {
font-size: 0.9rem;
opacity: 0.8;
}

.nav-link h4 {
margin-top: 8px;
}

.related-posts {
margin: 60px 0;
}

.related-posts h3 {
margin-bottom: 30px;
}

.related-posts-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
gap: 20px;
}

.related-post-card {
background: var(--bg-white);
border-radius: 12px;
overflow: hidden;
box-shadow: var(--shadow-sm);
transition: var(--transition);
}

.related-post-card:hover {
box-shadow: var(--shadow-md);
}

.related-post-card img {
width: 100%;
height: 150px;
object-fit: cover;
}

.related-post-card h4 {
padding: 15px;
font-size: 1rem;
}

.related-post-card .read-time {
padding: 0 15px 15px;
font-size: 0.85rem;
}

.blog-sidebar {
}

.sidebar-widget {
background: var(--bg-light);
padding: 25px;
border-radius: 12px;
margin-bottom: 30px;
}

.sidebar-widget h3 {
margin-bottom: 20px;
}

.recent-posts-list li,
.categories-list li {
padding: 10px 0;
border-bottom: 1px solid var(--border-color);
}

.recent-posts-list li:last-child,
.categories-list li:last-child {
border-bottom: none;
}

.recent-posts-list a,
.categories-list a {
color: var(--text-dark);
transition: var(--transition);
}

.recent-posts-list a:hover,
.categories-list a:hover {
color: var(--primary-color);
}

.cta-widget {
text-align: center;
background: var(--primary-color);
color: var(--bg-white);
}

.cta-widget p {
margin-bottom: 20px;
}

@media (max-width: 768px) {
.nav-menu {
display: none;
}
.hero-content h1 {
font-size: 2rem;
}
.product-detail-grid,
.checkout-grid,
.contact-grid {
grid-template-columns: 1fr;
}
.blog-post .container {
grid-template-columns: 1fr;
}
.blog-sidebar {
order: -1;
}
.form-row {
grid-template-columns: 1fr;
}
.post-navigation {
grid-template-columns: 1fr;
}
}

@media (max-width: 480px) {
.hero-content h1 {
font-size: 1.75rem;
}
.features h2,
.products h2 {
font-size: 2rem;
}
.cart-item {
flex-direction: column;
}
}