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

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --dark-color: #1a202c;
    --light-color: #f7fafc;
    --text-color: #2d3748;
    --border-color: #e2e8f0;
    --success-color: #48bb78;
    --warning-color: #ed8936;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
}

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

.navbar {
    background: var(--gradient);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
}

.logo img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

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

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    transform: translateY(-2px);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: white;
}

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

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

.hero {
    background: var(--gradient);
    color: white;
    padding: 6rem 0;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

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

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

.beginner-section {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    padding: 4rem 0;
    margin: 2rem 0;
}

.beginner-content {
    text-align: center;
}

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

.beginner-content > p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
}

.beginner-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.feature-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.2);
}

.feature-item svg {
    margin-bottom: 1rem;
}

.feature-item h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.feature-item p {
    opacity: 0.9;
}

.advantages {
    padding: 4rem 0;
    background: white;
}

.advantages h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark-color);
}

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

.advantage-card {
    background: var(--light-color);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.advantage-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 30px rgba(102, 126, 234, 0.2);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.advantage-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.advantage-card p {
    color: var(--text-color);
    opacity: 0.8;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: var(--gradient);
    color: white;
    border-radius: 15px;
}

.stat-item h3 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-size: 1rem;
    opacity: 0.9;
}

.about-courses {
    padding: 4rem 0;
    background: var(--light-color);
}

.about-courses h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--dark-color);
}

.about-courses h3 {
    font-size: 1.8rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.about-content p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.05rem;
}

.products {
    padding: 4rem 0;
    background: white;
}

.products h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark-color);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--light-color);
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
    border-color: var(--primary-color);
}

.product-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-info {
    padding: 1.5rem;
}

.product-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.product-info p {
    color: var(--text-color);
    opacity: 0.8;
    margin-bottom: 1rem;
    min-height: 48px;
}

.product-price {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.product-detail {
    padding: 4rem 0;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.product-detail-image {
    width: 100%;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.product-detail-image img {
    width: 100%;
    height: auto;
    display: block;
}

.product-detail-info h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.product-detail-price {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.product-detail-description {
    line-height: 1.8;
    margin-bottom: 2rem;
    font-size: 1.05rem;
}

.product-features {
    background: var(--light-color);
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 2rem;
}

.product-features h3 {
    margin-bottom: 1rem;
}

.product-features ul {
    list-style: none;
    padding-left: 0;
}

.product-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

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

.product-actions {
    display: flex;
    gap: 1rem;
}

.product-actions .btn {
    flex: 1;
}

.product-tabs {
    margin-top: 3rem;
}

.tab-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.tab-button {
    padding: 1rem 2rem;
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
}

.tab-button.active {
    color: var(--primary-color);
}

.tab-button.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.cart-page {
    padding: 4rem 0;
    min-height: 60vh;
}

.cart-empty {
    text-align: center;
    padding: 4rem 0;
}

.cart-empty svg {
    margin-bottom: 1rem;
    opacity: 0.3;
}

.cart-empty h2 {
    margin-bottom: 1rem;
}

.cart-items {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.cart-item {
    display: grid;
    grid-template-columns: 100px 1fr auto;
    gap: 1.5rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
    align-items: center;
}

.cart-item:last-child {
    border-bottom: none;
}

.cart-item-image {
    width: 100px;
    height: 100px;
    border-radius: 10px;
    overflow: hidden;
}

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

.cart-item-info h3 {
    margin-bottom: 0.5rem;
}

.cart-item-price {
    font-size: 1.2rem;
    color: var(--primary-color);
    font-weight: bold;
}

.cart-item-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.quantity-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--light-color);
    padding: 0.5rem;
    border-radius: 50px;
}

.quantity-control button {
    width: 30px;
    height: 30px;
    border: none;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.quantity-control button:hover {
    background: var(--secondary-color);
    transform: scale(1.1);
}

.quantity-control span {
    min-width: 30px;
    text-align: center;
    font-weight: bold;
}

.remove-item {
    background: none;
    border: none;
    color: var(--warning-color);
    cursor: pointer;
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.remove-item:hover {
    color: #c53030;
    transform: scale(1.2);
}

.cart-summary {
    background: var(--light-color);
    padding: 2rem;
    border-radius: 15px;
    position: sticky;
    top: 100px;
}

.cart-summary h3 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.summary-row.total {
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--primary-color);
    border-bottom: none;
    margin-top: 1rem;
}

.checkout-form {
    background: white;
    padding: 3rem;
    border-radius: 15px;
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.success-page {
    padding: 4rem 0;
    text-align: center;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.success-content {
    max-width: 600px;
    margin: 0 auto;
}

.success-icon {
    width: 100px;
    height: 100px;
    background: var(--success-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    animation: scaleIn 0.5s ease;
}

@keyframes scaleIn {
    from {
        transform: scale(0);
    }
    to {
        transform: scale(1);
    }
}

.success-icon svg {
    color: white;
}

.success-content h1 {
    color: var(--success-color);
    margin-bottom: 1rem;
}

.success-content p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.contact-page {
    padding: 4rem 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

.contact-info {
    background: white;
    padding: 2rem;
    border-radius: 15px;
}

.contact-info h2 {
    margin-bottom: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

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

.contact-item-content h3 {
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.contact-item-content p {
    color: var(--text-color);
    opacity: 0.8;
}

.about-page {
    padding: 4rem 0;
}

.about-hero {
    text-align: center;
    margin-bottom: 4rem;
}

.about-hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.about-hero p {
    font-size: 1.2rem;
    color: var(--text-color);
    max-width: 800px;
    margin: 0 auto;
}

.team-section {
    margin-top: 4rem;
}

.team-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark-color);
}

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

.team-member {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.team-member:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 30px rgba(102, 126, 234, 0.2);
}

.team-member img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1rem;
    border: 4px solid var(--primary-color);
}

.team-member h3 {
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.team-member p:first-of-type {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.team-member p:last-of-type {
    color: var(--text-color);
    opacity: 0.8;
    font-size: 0.9rem;
}

.footer {
    background: var(--dark-color);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

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

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-section p,
.footer-section li {
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

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

.footer-section a {
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-section a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    opacity: 0.7;
    margin: 0.5rem 0;
}

.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    box-shadow: 0 -5px 20px rgba(0,0,0,0.2);
    padding: 2rem;
    z-index: 9999;
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.cookie-consent.hidden {
    display: none;
}

.cookie-content h3 {
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.cookie-content p {
    margin-bottom: 1rem;
    color: var(--text-color);
}

.cookie-content a {
    color: var(--primary-color);
    text-decoration: underline;
}

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

.notification {
    position: fixed;
    top: 100px;
    right: 20px;
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.3);
    z-index: 10000;
    animation: slideInRight 0.5s ease;
    max-width: 300px;
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
    }
    to {
        transform: translateX(0);
    }
}

.notification.success {
    border-left: 4px solid var(--success-color);
}

.notification h4 {
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.notification p {
    color: var(--text-color);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .product-detail-grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .advantages-grid,
    .beginner-features {
        grid-template-columns: 1fr;
    }

    .cart-item {
        grid-template-columns: 80px 1fr;
        gap: 1rem;
    }

    .cart-item-actions {
        grid-column: 1 / -1;
        justify-content: space-between;
    }

    .cookie-buttons {
        flex-direction: column;
    }
}