/* Reset e Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary-color: #0066cc;
    --primary-dark: #004d99;
    --secondary-color: #28a745;
    --accent-color: #ff6b35;
    --text-color: #333;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);
    --radius: 8px;
    --radius-lg: 16px;
}

html {
    scroll-behavior: smooth;
}

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

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

/* Header */
header {
    background: var(--bg-white);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-color);
}

.logo img {
    height: 50px;
    width: auto;
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

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

nav a:hover {
    color: var(--primary-color);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 160px 0 100px;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero .subtitle {
    font-size: 1.4rem;
    opacity: 0.95;
    max-width: 700px;
    margin: 0 auto 40px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 16px 32px;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: #e55a2b;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background: var(--bg-light);
    transform: translateY(-2px);
}

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

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

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

.btn-green:hover {
    background: #218838;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Sections */
section {
    padding: 80px 0;
}

section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 20px;
    color: var(--text-color);
}

section .section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 50px;
}

/* Products Section */
.products {
    background: var(--bg-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.product-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    height: 250px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 4rem;
}

.product-card.book .product-image {
    background: linear-gradient(135deg, #6c5ce7, #a55eea);
}

.product-card.course .product-image {
    background: linear-gradient(135deg, var(--secondary-color), #20c997);
}

.product-content {
    padding: 30px;
}

.product-content h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.product-content p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.7;
}

.product-content .btn {
    width: 100%;
    text-align: center;
}

/* Benefits Section */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.benefit-card {
    text-align: center;
    padding: 40px 30px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

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

.benefit-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.benefit-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.benefit-card p {
    color: var(--text-light);
}

/* About Section */
.about {
    background: var(--bg-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    text-align: left;
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.about-image {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: var(--radius-lg);
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 5rem;
}

/* FAQ Section */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: var(--radius);
    margin-bottom: 15px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 20px 25px;
    background: white;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s;
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: transform 0.3s;
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 25px 20px;
    color: var(--text-light);
    line-height: 1.7;
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    text-align: center;
}

.cta h2 {
    color: white;
    margin-bottom: 20px;
}

.cta p {
    font-size: 1.2rem;
    opacity: 0.95;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
footer {
    background: #1a1a2e;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: white;
}

.footer-brand p {
    color: #aaa;
    line-height: 1.7;
}

.footer-links h4 {
    margin-bottom: 20px;
    color: white;
}

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

.footer-links a {
    color: #aaa;
    text-decoration: none;
    display: block;
    padding: 5px 0;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 30px;
    text-align: center;
    color: #aaa;
}

/* Responsive */
@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
    }

    .about-image {
        height: 300px;
    }

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

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        box-shadow: var(--shadow);
        display: none;
    }

    nav.active {
        display: block;
    }

    nav ul {
        flex-direction: column;
        padding: 20px;
        gap: 15px;
    }

    .hero {
        padding: 140px 0 80px;
    }

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

    .hero .subtitle {
        font-size: 1.1rem;
    }

    section {
        padding: 60px 0;
    }

    section h2 {
        font-size: 2rem;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

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

.animate {
    animation: fadeInUp 0.6s ease forwards;
}

/* Article page styles */
.article-page {
    padding-top: 100px;
}

.article-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 60px 0;
    text-align: center;
}

.article-header h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.article-header .meta {
    opacity: 0.9;
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 60px 20px;
}

.article-content h2 {
    text-align: left;
    font-size: 1.8rem;
    margin: 40px 0 20px;
}

.article-content h3 {
    font-size: 1.4rem;
    margin: 30px 0 15px;
}

.article-content p {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 1.1rem;
    line-height: 1.8;
}

.article-content ul, .article-content ol {
    margin: 20px 0;
    padding-left: 30px;
    color: var(--text-light);
}

.article-content li {
    margin-bottom: 10px;
    line-height: 1.7;
}

.article-cta {
    background: var(--bg-light);
    padding: 40px;
    border-radius: var(--radius-lg);
    text-align: center;
    margin: 40px 0;
}

.article-cta h3 {
    margin-bottom: 15px;
}

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

/* Exit Intent Popup */
.exit-popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.exit-popup-overlay.active {
    display: flex;
    opacity: 1;
}

.exit-popup {
    background: white;
    border-radius: var(--radius-lg);
    max-width: 500px;
    width: 90%;
    position: relative;
    transform: scale(0.8);
    transition: transform 0.3s ease;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.exit-popup-overlay.active .exit-popup {
    transform: scale(1);
}

.exit-popup-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: #999;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s;
    z-index: 10;
}

.exit-popup-close:hover {
    background: #f0f0f0;
    color: #333;
}

.exit-popup-header {
    background: linear-gradient(135deg, var(--secondary-color), #20c997);
    color: white;
    padding: 40px 30px;
    text-align: center;
}

.exit-popup-header .popup-icon {
    font-size: 4rem;
    margin-bottom: 15px;
}

.exit-popup-header h2 {
    font-size: 1.6rem;
    color: white;
    margin-bottom: 10px;
}

.exit-popup-header p {
    opacity: 0.95;
    font-size: 1rem;
}

.exit-popup-content {
    padding: 30px;
    text-align: center;
}

.exit-popup-content p {
    color: var(--text-light);
    margin-bottom: 25px;
    font-size: 1.05rem;
    line-height: 1.7;
}

.exit-popup-content .btn {
    width: 100%;
    padding: 18px 30px;
    font-size: 1.1rem;
    margin-bottom: 15px;
}

.exit-popup-content .btn-dismiss {
    background: none;
    border: none;
    color: #999;
    font-size: 0.9rem;
    cursor: pointer;
    padding: 10px;
    transition: color 0.3s;
}

.exit-popup-content .btn-dismiss:hover {
    color: #666;
}

@media (max-width: 768px) {
    .exit-popup {
        max-width: 95%;
        margin: 20px;
    }

    .exit-popup-header {
        padding: 30px 20px;
    }

    .exit-popup-header .popup-icon {
        font-size: 3rem;
    }

    .exit-popup-header h2 {
        font-size: 1.4rem;
    }

    .exit-popup-content {
        padding: 25px 20px;
    }
}