/* Reset e Variáveis */
:root {
    --primary-color: #0066CC;
    --primary-dark: #004C99;
    --secondary-color: #25D366;
    --accent-color: #FF6B35;
    --text-dark: #1a1a1a;
    --text-gray: #4a4a4a;
    --text-light: #757575;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Header */
.header {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.logo-icon {
    font-size: 1.8rem;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav a {
    color: var(--text-gray);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav a:hover::after {
    width: 100%;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    text-align: center;
    justify-content: center;
}

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

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

.btn-secondary {
    background: var(--bg-light);
    color: var(--text-dark);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-whatsapp,
.btn-whatsapp-header {
    background: var(--secondary-color);
    color: white;
}

.btn-whatsapp:hover,
.btn-whatsapp-header:hover {
    background: #1fb855;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
}

.btn-pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(0, 102, 204, 0.7);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(0, 102, 204, 0);
    }
}

.btn-arrow {
    font-size: 1.2rem;
    transition: var(--transition);
}

.btn:hover .btn-arrow {
    transform: translateX(4px);
}

.whatsapp-icon {
    font-size: 1.2rem;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #0066CC 0%, #004C99 100%);
    color: white;
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="none"/><path d="M0 0L100 100M100 0L0 100" stroke="rgba(255,255,255,0.03)" stroke-width="2"/></svg>');
    opacity: 0.5;
}

.hero .container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.highlight {
    color: #FFD700;
    position: relative;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.6;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: #FFD700;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-top: 0.25rem;
}

/* Professor Card */
.professor-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    color: var(--text-dark);
}

.professor-image {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

.professor-photo {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
}

.professor-placeholder {
    width: 120px;
    height: 120px;
    margin: 0 auto;
    background: linear-gradient(135deg, #0066CC 0%, #004C99 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.professor-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.professor-credentials {
    color: var(--text-gray);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.professor-experience {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.professor-badge {
    display: inline-block;
    background: var(--success-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

/* Urgency Banner */
.urgency-banner {
    background: var(--accent-color);
    color: white;
    padding: 1.5rem 0;
    text-align: center;
}

.urgency-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.urgency-icon {
    font-size: 1.5rem;
}

.urgency-text {
    font-weight: 500;
}

.urgency-highlight {
    font-weight: 700;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
}

/* Section Styles */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-block;
    background: var(--bg-light);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
}

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

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-intro {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    color: var(--text-gray);
}

.story-highlight {
    background: white;
    border-left: 4px solid var(--primary-color);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.story-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 1rem;
}

.story-highlight p {
    line-height: 1.8;
    color: var(--text-gray);
}

.about-features {
    display: grid;
    gap: 1rem;
    margin: 2rem 0;
}

.feature-item {
    display: flex;
    gap: 1rem;
    align-items: start;
}

.feature-check {
    color: var(--success-color);
    font-size: 1.5rem;
    font-weight: bold;
}

.testimonial-inline {
    background: var(--primary-color);
    color: white;
    padding: 2rem;
    border-radius: 12px;
    margin-top: 2rem;
    font-style: italic;
    line-height: 1.8;
}

.testimonial-inline cite {
    display: block;
    margin-top: 1rem;
    font-style: normal;
    font-weight: 600;
    opacity: 0.9;
}

.achievements {
    display: grid;
    gap: 1.5rem;
}

.achievement-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition);
}

.achievement-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

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

.achievement-card h4 {
    color: var(--primary-color);
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

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

/* Materials Section */
.materials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.material-card {
    background: white;
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 2px solid transparent;
}

.material-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.material-badge {
    display: inline-block;
    background: var(--bg-light);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.material-title {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.material-price {
    display: flex;
    align-items: baseline;
    margin-bottom: 2rem;
}

.price-currency {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-gray);
}

.price-value {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

.price-cents {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

.material-features {
    list-style: none;
    margin-bottom: 2rem;
}

.material-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-gray);
}

.material-features li:last-child {
    border-bottom: none;
}

/* Combo Section */
.combo-section {
    background: linear-gradient(135deg, #0066CC 0%, #004C99 100%);
    color: white;
}

.combo-card {
    background: white;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: var(--shadow-lg);
    color: var(--text-dark);
    max-width: 1000px;
    margin: 0 auto;
}

.combo-badge {
    display: inline-block;
    background: var(--accent-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-weight: 700;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.combo-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.combo-subtitle {
    font-size: 1.125rem;
    color: var(--text-gray);
    margin-bottom: 3rem;
}

.combo-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
}

.combo-includes h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.includes-grid {
    display: grid;
    gap: 1.5rem;
}

.include-item {
    display: flex;
    gap: 1rem;
    align-items: start;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: 8px;
}

.include-icon {
    font-size: 2rem;
}

.include-item h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    color: var(--text-dark);
}

.include-item p {
    font-size: 0.875rem;
    color: var(--text-gray);
}

.combo-pricing {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
}

.pricing-comparison {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px dashed var(--border-color);
}

.price-old {
    display: flex;
    flex-direction: column;
}

.price-old .label {
    font-size: 0.875rem;
    color: var(--text-light);
}

.price-old .value {
    font-size: 1.5rem;
    color: var(--text-light);
    text-decoration: line-through;
}

.discount-badge {
    background: var(--accent-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.875rem;
}

.price-current {
    text-align: center;
    margin-bottom: 2rem;
}

.price-current .label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-gray);
    margin-bottom: 0.5rem;
}

.price-main {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin-bottom: 0.5rem;
}

.price-main .currency {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-gray);
}

.price-main .value {
    font-size: 4rem;
    font-weight: 800;
    color: var(--primary-color);
}

.price-main .cents {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.price-installment {
    display: block;
    font-size: 0.875rem;
    color: var(--text-light);
}

.combo-cta {
    margin-bottom: 2rem;
}

.combo-cta .btn {
    width: 100%;
    margin-bottom: 0.75rem;
}

.cta-subtitle {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-gray);
}

.trust-badges {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.trust-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-gray);
    text-align: center;
}

.trust-item span:first-child {
    font-size: 1.5rem;
}

/* Mentorship Section */
.mentorship-section {
    background: var(--bg-light);
}

.mentorship-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.mentorship-intro {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-gray);
    margin-bottom: 2rem;
}

.mentorship-features {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.mentorship-feature {
    display: flex;
    gap: 1rem;
    align-items: start;
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.mentorship-feature .feature-icon {
    font-size: 2.5rem;
}

.mentorship-feature h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

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

.mentorship-price {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.price-tag {
    text-align: center;
    margin-bottom: 2rem;
}

.price-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-gray);
    margin-bottom: 0.5rem;
}

.price-value-large {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin-bottom: 0.5rem;
}

.price-value-large .currency {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-gray);
}

.price-value-large .value {
    font-size: 4rem;
    font-weight: 800;
    color: var(--primary-color);
}

.price-value-large .cents {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.price-period {
    display: block;
    font-size: 0.875rem;
    color: var(--text-light);
}

.mentorship-price .btn {
    width: 100%;
    margin-bottom: 1rem;
}

.mentorship-note {
    background: var(--bg-light);
    padding: 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--text-gray);
}

.testimonial-box {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.testimonial-stars {
    color: #FFD700;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.testimonial-text {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-gray);
    margin-bottom: 1.5rem;
}

.testimonial-author {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.author-name {
    font-weight: 600;
    color: var(--text-dark);
}

.author-info {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Testimonials Section */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.testimonial-name {
    font-weight: 600;
    color: var(--text-dark);
}

.testimonial-course {
    font-size: 0.875rem;
    color: var(--text-light);
}

.testimonial-rating {
    margin-left: auto;
    color: #FFD700;
}

.testimonial-content {
    color: var(--text-gray);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* FAQ Section */
.faq-section {
    background: var(--bg-light);
}

.faq-grid {
    display: grid;
    gap: 1.5rem;
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    font-size: 1.125rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.faq-answer {
    color: var(--text-gray);
    line-height: 1.7;
}

/* CTA Final */
.cta-final {
    background: linear-gradient(135deg, #0066CC 0%, #004C99 100%);
    color: white;
    text-align: center;
    padding: 5rem 0;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-text {
    font-size: 1.125rem;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.cta-trust {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand p {
    margin-top: 1rem;
    opacity: 0.8;
}

.footer-links h4 {
    margin-bottom: 1rem;
    color: white;
}

.footer-links a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

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

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

.footer-disclaimer {
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 968px) {
    .nav {
        display: none;
    }
    
    .hero .container,
    .about-content,
    .combo-content,
    .mentorship-content {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .materials-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .professor-photo {
        width: 160px;
        height: 160px;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .combo-title {
        font-size: 1.75rem;
    }
    
    .btn-large {
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }
    
    .trust-badges {
        grid-template-columns: 1fr;
    }
    
    .professor-photo {
        width: 140px;
        height: 140px;
    }
}