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

:root {
    --primary-color: #2563eb;
    --secondary-color: #10b981;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --text-color: #334155;
    --border-color: #e2e8f0;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
}

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

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

.navbar {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

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

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

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

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

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

.cart-link {
    position: relative;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--dark-color);
    transition: 0.3s;
}

.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: #fff;
    padding: 100px 20px;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    min-height: 80px;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.typewriter {
    overflow: hidden;
    border-right: 3px solid #fff;
    white-space: nowrap;
    animation: blink-caret 0.75s step-end infinite;
}

@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: #fff }
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--secondary-color);
    color: #fff;
}

.btn-primary:hover {
    background-color: #059669;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(16, 185, 129, 0.3);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: #fff;
}

.btn-large {
    padding: 15px 40px;
    font-size: 1.1rem;
    width: 100%;
}

.future-quote {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    padding: 60px 20px;
    color: #fff;
}

.quote-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    position: relative;
}

.quote-content i {
    font-size: 3rem;
    opacity: 0.3;
    margin-bottom: 1rem;
}

.quote-text {
    font-size: 1.5rem;
    font-style: italic;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.quote-author {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary-color);
}

.features {
    padding: 80px 20px;
    background-color: var(--light-color);
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

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

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

.feature-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.stat-item {
    text-align: center;
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.stat-item h3 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.about-products {
    padding: 80px 20px;
}

.about-products h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    text-align: justify;
}

.products {
    padding: 80px 20px;
    background-color: var(--light-color);
}

.products h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

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

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

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

.product-image {
    position: relative;
    overflow: hidden;
    height: 250px;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

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

.badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: var(--danger-color);
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.badge-success {
    background-color: var(--success-color);
}

.badge-info {
    background-color: var(--info-color);
}

.product-info {
    padding: 1.5rem;
}

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

.rating {
    color: var(--warning-color);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.rating span {
    color: var(--text-color);
    margin-left: 0.5rem;
}

.price {
    font-size: 1.75rem;
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: 1rem;
}

.product-detail {
    padding: 60px 20px;
}

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

.product-detail-image {
    position: relative;
}

.product-detail-image img {
    width: 100%;
    border-radius: 12px;
}

.product-badges {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

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

.price-section {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0;
}

.current-price {
    font-size: 2.5rem;
    color: var(--primary-color);
    font-weight: bold;
}

.original-price {
    font-size: 1.5rem;
    color: #999;
    text-decoration: line-through;
}

.discount {
    background-color: var(--danger-color);
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: 600;
}

.product-description {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

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

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

.product-features li {
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.product-features i {
    color: var(--success-color);
}

.course-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin: 2rem 0;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background-color: var(--light-color);
    border-radius: 8px;
}

.info-item i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.product-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

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

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

.tab-button {
    background: none;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    cursor: pointer;
    color: var(--text-color);
    font-weight: 600;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

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

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

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

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

.curriculum-section {
    margin-bottom: 2rem;
}

.curriculum-section h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.curriculum-section ul {
    list-style: none;
    padding-left: 1rem;
}

.curriculum-section li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.review {
    background-color: var(--light-color);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.cart-section {
    padding: 60px 20px;
    min-height: 60vh;
}

.cart-section h1 {
    text-align: center;
    margin-bottom: 2rem;
}

.cart-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.cart-items {
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.cart-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

.cart-item img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 8px;
}

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

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

.cart-item-price {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
}

.remove-item {
    color: var(--danger-color);
    cursor: pointer;
    font-size: 1.5rem;
}

.cart-summary {
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    height: fit-content;
}

.cart-summary h2 {
    margin-bottom: 1.5rem;
}

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

.summary-row.total {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    border-bottom: none;
    padding-top: 1rem;
}

.checkout-section {
    padding: 60px 20px;
}

.checkout-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.checkout-form,
.checkout-summary {
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.checkout-summary {
    height: fit-content;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.checkbox-group {
    display: flex;
    align-items: start;
    gap: 0.5rem;
}

.checkbox-group input {
    width: auto;
    margin-top: 0.25rem;
}

.secure-payment {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
    color: var(--success-color);
    font-weight: 600;
}

.success-section {
    padding: 80px 20px;
    text-align: center;
}

.success-icon i {
    font-size: 5rem;
    color: var(--success-color);
    margin-bottom: 1rem;
}

.success-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

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

.success-info {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.success-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.next-steps {
    max-width: 900px;
    margin: 3rem auto 0;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.step {
    background: var(--light-color);
    padding: 2rem;
    border-radius: 12px;
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.contact-hero,
.about-hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: #fff;
    padding: 80px 20px;
    text-align: center;
}

.contact-hero h1,
.about-hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.contact-section,
.about-content {
    padding: 60px 20px;
}

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

.contact-info h2 {
    margin-bottom: 1rem;
}

.contact-details {
    margin-top: 2rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 0.25rem;
}

.contact-item a {
    color: var(--primary-color);
    text-decoration: none;
}

.social-contact {
    margin-top: 2rem;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.2rem;
    transition: transform 0.3s;
}

.social-links a:hover {
    transform: scale(1.1);
}

.contact-form-container {
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.about-text,
.about-values {
    margin-bottom: 3rem;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.value-card {
    background: var(--light-color);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
}

.value-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.team-section {
    padding: 60px 20px;
    background-color: var(--light-color);
}

.team-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.team-intro {
    text-align: center;
    font-size: 1.1rem;
    margin-bottom: 3rem;
    color: var(--text-color);
}

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

.team-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
}

.team-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.team-card h3 {
    padding: 1rem 1rem 0.5rem;
}

.team-role {
    color: var(--primary-color);
    font-weight: 600;
    padding: 0 1rem;
}

.team-card p:last-child {
    padding: 1rem;
    font-size: 0.95rem;
}

.stats-section {
    padding: 60px 20px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.stat-box {
    text-align: center;
    background: var(--light-color);
    padding: 2rem;
    border-radius: 12px;
}

.stat-box i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.footer {
    background-color: var(--dark-color);
    color: #fff;
    padding: 60px 20px 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-col h4 {
    margin-bottom: 1rem;
}

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

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

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

.footer-col a:hover {
    color: var(--secondary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #475569;
    color: #cbd5e1;
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--dark-color);
    color: #fff;
    padding: 20px;
    z-index: 2000;
    box-shadow: 0 -5px 20px rgba(0,0,0,0.2);
    display: none;
}

.cookie-banner.show {
    display: block;
    animation: slideUp 0.5s;
}

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

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

.cookie-content p {
    flex: 1;
}

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

.cookie-buttons a {
    color: var(--secondary-color);
    text-decoration: none;
}

.empty-cart {
    text-align: center;
    padding: 4rem 2rem;
}

.empty-cart i {
    font-size: 5rem;
    color: var(--text-color);
    margin-bottom: 1rem;
    opacity: 0.5;
}

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

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: #fff;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

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

    .product-detail-grid,
    .cart-content,
    .checkout-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

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

    .course-info {
        grid-template-columns: 1fr;
    }

    .tabs {
        overflow-x: auto;
    }

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

    .cookie-content {
        flex-direction: column;
        text-align: center;
    }

    .cookie-buttons {
        flex-direction: column;
        width: 100%;
    }

    .cookie-buttons button {
        width: 100%;
    }

    .stats-grid,
    .steps-grid {
        grid-template-columns: 1fr;
    }

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

    .success-actions {
        flex-direction: column;
    }
}