/* Reset e configurações básicas */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --accent-color: #f59e0b;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    font-size: 16px;
    overflow-x: hidden;
}

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

/* Tipografia */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Botões */
.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 16px;
}

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

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

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

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

.btn-primary.large {
    padding: 16px 32px;
    font-size: 18px;
}

/* Header/Hero Section */
.hero {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, #e0e7ff 100%);
    padding: 80px 0 120px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e2e8f0" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

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

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.book-mockup {
    position: relative;
    width: 300px;
    height: 400px;
    perspective: 1000px;
}

.book-cover {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-radius: 8px;
    box-shadow: var(--shadow-xl);
    position: relative;
    transform: rotateY(-15deg) rotateX(5deg);
    transition: transform 0.3s ease;
}

.book-cover::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 20px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.book-cover::after {
    content: 'SEU LIVRO DIGITAL';
    position: absolute;
    bottom: 40px;
    left: 20px;
    right: 20px;
    color: white;
    font-weight: 600;
    text-align: center;
    font-size: 14px;
    letter-spacing: 1px;
}

.book-pages {
    position: absolute;
    top: 5px;
    right: -10px;
    width: 95%;
    height: 95%;
    background: white;
    border-radius: 6px;
    box-shadow: var(--shadow-md);
    z-index: -1;
}

.book-mockup:hover .book-cover {
    transform: rotateY(-10deg) rotateX(2deg);
}

/* Sections */
.about-section, .plans-section, .cta-section {
    padding: 80px 0;
}

.about-section {
    background-color: var(--bg-primary);
}

.plans-section {
    background-color: var(--bg-secondary);
}

.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}

.section-header h2 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.cta-section .section-header h2,
.cta-section .section-header p {
    color: white;
}

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

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

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

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

.feature-card h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Plans Grid */
.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.plan-card {
    background: white;
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.plan-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

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

.plan-card.premium {
    border-color: var(--accent-color);
    position: relative;
}

.plan-card.premium::before {
    background: linear-gradient(90deg, var(--accent-color), #f97316);
}

.plan-header {
    margin-bottom: 30px;
}

.plan-header h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.plan-badge {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.plan-card.premium .plan-badge {
    background: var(--accent-color);
}

.plan-price {
    margin-bottom: 30px;
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 2px;
}

.plan-price .currency {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.plan-price .amount {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

.plan-features {
    list-style: none;
    margin-bottom: 40px;
    text-align: left;
}

.plan-features li {
    padding: 8px 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.plan-features li::before {
    content: '✓';
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.1rem;
}

.plan-btn {
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 16px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

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

.plan-card.premium .plan-btn {
    background: var(--accent-color);
}

.plan-card.premium .plan-btn:hover {
    background: #f97316;
}

/* CTA Section */
.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    color: white;
    margin-bottom: 1rem;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

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

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

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

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

.footer-info h3 {
    color: white;
    margin-bottom: 1rem;
}

.footer-info p {
    color: var(--text-light);
}

.footer-links h4,
.footer-contact h4 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

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

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-contact p {
    color: var(--text-light);
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-light);
    margin: 0;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .book-mockup {
        width: 250px;
        height: 320px;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .features-grid,
    .plans-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .plan-features {
        text-align: center;
    }
    
    .plan-features li {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 60px 0 80px;
    }
    
    .about-section,
    .plans-section,
    .cta-section {
        padding: 60px 0;
    }
    
    .plan-card {
        padding: 30px 20px;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 300px;
    }
}

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

.hero-content,
.feature-card,
.plan-card {
    animation: fadeInUp 0.6s ease-out;
}

.feature-card:nth-child(2) {
    animation-delay: 0.1s;
}

.feature-card:nth-child(3) {
    animation-delay: 0.2s;
}

.feature-card:nth-child(4) {
    animation-delay: 0.3s;
}

.plan-card:nth-child(2) {
    animation-delay: 0.1s;
}

.plan-card:nth-child(3) {
    animation-delay: 0.2s;
}

.plan-card:nth-child(4) {
    animation-delay: 0.3s;
}



/* WhatsApp Floating Button */
.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 40px;
    right: 40px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 3px #999;
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 3px 3px 5px #999;
}

.whatsapp-float img {
    width: 35px;
    height: 35px;
}

@media (max-width: 768px) {
    .whatsapp-float {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
    }
    .whatsapp-float img {
        width: 30px;
        height: 30px;
    }
}