/* ===== VARIÁVEIS HOME ===== */
:root {
    --hero-gradient: linear-gradient(135deg, #4361ee 0%, #3a0ca3 100%);
    --section-spacing: 6rem;
    --section-spacing-mobile: 4rem;
    --card-radius: 1rem;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --card-shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== HERO SECTION ===== */
.home-hero {
    background: var(--hero-gradient);
    color: white;
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 2px, transparent 0),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.05) 1px, transparent 0);
    background-size: 50px 50px, 30px 30px;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0;
}

.hero-badge {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 2rem;
    font-weight: 600;
    font-size: 0.875rem;
    display: inline-flex;
    align-items: center;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-highlight {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 3rem;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 4rem;
}

.hero-btn {
    padding: 1rem 2rem;
    font-weight: 600;
    border-radius: var(--card-radius);
    transition: var(--transition);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: #fbbf24;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-arrow {
    width: 30px;
    height: 30px;
    border-right: 2px solid white;
    border-bottom: 2px solid white;
    transform: rotate(45deg);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: rotate(45deg) translateY(0); }
    50% { transform: rotate(45deg) translateY(-10px); }
}

/* ===== SECTIONS COMUNS ===== */
.section-features,
.section-showcase,
.section-benefits,
.section-testimonials,
.section-cta {
    padding: var(--section-spacing) 0;
}

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

.section-header.center {
    text-align: center;
}

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

.section-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin: 0;
}

.showcase-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 3rem;
}

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

.feature-card {
    background: white;
    padding: 3rem 2rem;
    border-radius: var(--card-radius);
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 2rem;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--gray-600);
    line-height: 1.6;
    margin: 0;
}

/* ===== BOOKS SHOWCASE ===== */
.section-showcase {
    background: var(--gray-100);
}

.books-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.book-showcase-card {
    background: white;
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.book-showcase-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--card-shadow-hover);
}

.book-cover {
    position: relative;
    aspect-ratio: 2/3;
    overflow: hidden;
}

.book-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.book-showcase-card:hover .book-image {
    transform: scale(1.05);
}

.book-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    font-size: 3rem;
}

.book-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.book-showcase-card:hover .book-overlay {
    opacity: 1;
}

.book-info {
    padding: 1.5rem;
}

.book-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.book-author {
    color: var(--gray-600);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.book-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    color: var(--gray-500);
}

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

.benefit-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: var(--card-radius);
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.benefit-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--card-shadow-hover);
}

.benefit-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.benefit-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
}

.benefit-card p {
    color: var(--gray-600);
    line-height: 1.6;
    margin: 0;
}

/* ===== TESTIMONIALS ===== */
.section-testimonials {
    background: var(--gray-100);
}

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

.testimonial-card {
    background: white;
    padding: 2.5rem;
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    border: 1px solid var(--gray-200);
}

.testimonial-content {
    margin-bottom: 2rem;
}

.testimonial-content p {
    font-size: 1.125rem;
    font-style: italic;
    color: var(--gray-700);
    line-height: 1.6;
    margin: 0;
}

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

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-info strong {
    color: var(--dark);
    font-weight: 600;
}

.author-info span {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* ===== CTA ===== */
.section-cta {
    background: var(--dark);
    color: white;
}

.cta-card {
    background: var(--gray-800);
    border-radius: var(--card-radius);
    padding: 4rem;
    text-align: center;
}

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

.cta-description {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 3rem;
}

.cta-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-actions .btn {
    padding: 1rem 2rem;
    font-weight: 600;
    border-radius: var(--card-radius);
}

/* ===== EMPTY STATES ===== */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: white;
    border-radius: var(--card-radius);
    border: 2px dashed var(--gray-300);
}

.empty-icon {
    font-size: 4rem;
    color: var(--gray-400);
    margin-bottom: 1.5rem;
}

.empty-state h3 {
    font-size: 1.5rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--gray-500);
    margin-bottom: 2rem;
}

/* ===== RESPONSIVIDADE ===== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .home-hero {
        min-height: 80vh;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-actions .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .hero-stats {
        gap: 2rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .section-spacing {
        padding: var(--section-spacing-mobile) 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .showcase-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .features-grid,
    .benefits-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .books-showcase {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .cta-card {
        padding: 3rem 2rem;
    }
    
    .cta-title {
        font-size: 2rem;
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-actions .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .books-showcase {
        grid-template-columns: 1fr;
    }
    
    .feature-card,
    .benefit-card {
        padding: 2rem 1.5rem;
    }
    
    .testimonial-card {
        padding: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
}

/* ===== ANIMAÇÕES ===== */
@media (prefers-reduced-motion: no-preference) {
    .hero-content {
        animation: fadeInUp 1s ease-out;
    }
    
    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}

.books-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    justify-items: center;
}

.book-showcase-card {
    width: 100%;
    max-width: 300px;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.book-showcase-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.book-cover {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.book-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.book-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.book-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.book-cover:hover .book-overlay {
    opacity: 1;
}

.book-info {
    padding: 1.5rem;
}

.book-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #333;
    line-height: 1.3;
}

.book-author {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.book-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: #888;
}

/* Garantir que o grid funcione bem com poucos livros */
@media (max-width: 768px) {
    .books-showcase {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
    }
    
    .book-showcase-card {
        max-width: 100%;
    }
}

/* Para quando há apenas 1-2 livros, centralizar */
.books-showcase:has(.book-showcase-card:only-child),
.books-showcase:has(.book-showcase-card:nth-child(2):last-child) {
    justify-content: center;
}