/* ============================================
   RESET E ESTILOS BASE
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #ffffff;
}

/* ============================================
   CONTAINER
   ============================================ */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 768px) {
    .container {
        padding: 0 2rem;
    }
}

/* ============================================
   HEADER/NAVIGATION
   ============================================ */

.header {
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

@media (min-width: 768px) {
    .header .container {
        padding: 1rem 2rem;
    }
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
    margin: 0;
}

.nav {
    display: none;
    gap: 2rem;
}

@media (min-width: 768px) {
    .nav {
        display: flex;
    }
}

.nav-link {
    color: #475569;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #22c55e;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 9999px;
    text-decoration: none;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.btn-primary {
    background: #22c55e;
    color: white;
}

.btn-primary:hover {
    background: #16a34a;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(34, 197, 94, 0.3);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    background: linear-gradient(135deg, #bae6fd 0%, #e0f2fe 100%);
    padding: 3rem 0;
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .hero {
        padding: 4rem 0;
        margin-bottom: 3rem;
    }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
}

@media (min-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    color: #1e293b;
    margin-bottom: 1rem;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
}

.hero-subtitle {
    font-size: 1.1rem;
    font-style: italic;
    color: #475569;
    margin-bottom: 1.5rem;
}

.product-badge {
    background: white;
    border: 2px solid #22c55e;
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    color: #1e293b;
}

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

.hero-description {
    color: #475569;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.hero-benefits {
    background: white;
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #1e293b;
}

.benefit-icon {
    color: #22c55e;
    font-weight: bold;
    font-size: 1.2rem;
}

.hero-guarantee {
    color: #64748b;
    font-size: 0.9rem;
    margin-top: 1rem;
    margin-bottom: 1rem;
}

.hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.book-cover {
    /* background: white; */
    border-radius: 0.5rem;
    /* padding: 2rem; */
    display: flex;
    align-items: center;
    justify-content: center;
    /* min-height: 300px; */
    text-align: center;
    color: #cbd5e1;
}

.book-cover img {
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    width: 60%;
    height: 60%;
    border-radius: 0.5rem;
    margin-bottom: 3rem;
}

@media (min-width: 768px) {
    .image-placeholder {
        min-height: 400px;
    }
}

/* ============================================
   SECTION STYLES
   ============================================ */

section {
    padding: 3rem 0;
}

@media (min-width: 768px) {
    section {
        padding: 4rem 0;
    }
}

section h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 1rem;
    color: #1e293b;
}

@media (min-width: 768px) {
    section h2 {
        font-size: 2.5rem;
    }
}

.section-subtitle {
    text-align: center;
    color: #64748b;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   PILLARS SECTION
   ============================================ */

.pillars {
    background: white;
}

.pillars-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

@media (min-width: 768px) {
    .pillars-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pillar-card {
    background: linear-gradient(135deg, #dbeafe 0%, #e0f2fe 100%);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
    transition: all 0.3s ease;
}

.pillar-card:hover {
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
}

.pillar-icon {
    width: 60px;
    height: 60px;
    background: #3b82f6;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.pillar-image {
    display: block;
    margin: auto;
    border-radius: 100%;
    width: 40%;
    height: 40%;
}

@media (max-width: 768px) {
    .pillar-image {
        width: 30%;
        height: 50%;
    }
}

.pillar-card h3 {
    text-align: center;
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: #1e293b;
}

.pillar-card p {
    color: #475569;
    line-height: 1.6;
}

/* ============================================
   FEATURES/CAROUSEL SECTION
   ============================================ */

.features {
    background: linear-gradient(to bottom, #f0f9ff, #ffffff);
}

.carousel-container {
    background: white;
    border-radius: 0.5rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    padding: 2rem;
    margin-top: 2rem;
}

.carousel-wrapper {
    position: relative;
    width: 100%;
    margin-bottom: 1.5rem;
}

.carousel-image {
    /* background: #f3f4f6; */
    border-radius: 0.5rem;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    /* color: #9ca3af; */
    font-size: 1.1rem;
    overflow: hidden;
    position: relative;
}

@media (min-width: 768px) {
    .carousel-image {
        height: 400px;
    }
}

.carousel-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}

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

.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.carousel-btn {
    background: #e5e7eb;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    color: #374151;
    font-weight: bold;
}

.carousel-btn:hover {
    background: #d1d5db;
}

.carousel-dots {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #d1d5db;
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-dot.active {
    background: #fbbf24;
    width: 30px;
    border-radius: 6px;
}

.carousel-text {
    text-align: center;
    color: #64748b;
    margin-bottom: 1.5rem;
}

/* ============================================
   BONUS SECTION
   ============================================ */

.bonus {
    background: white;
}

.bonus h2 {
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.bonus-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
    margin-top: 2rem;
}

@media (min-width: 768px) {
    .bonus-content {
        grid-template-columns: 1fr 1fr;
    }
}

.bonus-text {
    color: #475569;
    line-height: 1.8;
}

.bonus-list {
    list-style: none;
    margin: 1rem 0;
    padding-left: 0;
}

.bonus-list li {
    padding: 0.5rem 0;
    padding-left: 1.75rem;
    position: relative;
    color: #475569;
}

.bonus-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #22c55e;
    font-weight: bold;
}

.bonus-image {
    /* background: #f3f4f6; */
    border-radius: 0.5rem;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    text-align: center;
    /* color: #9ca3af; */
}

.cell-btn {
    display: none;
    margin: 3rem;
}

@media (max-width: 768px) {
    .pc-btn {
        display: none;
    }

    .cell-btn {
        display: block;
    }
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */

.testimonials {
    background: linear-gradient(to bottom, #f0f9ff, #ffffff);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.testimonial-card {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    padding: 2rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    transform: translateY(-3px);
}

.testimonial-stars {
    color: #fbbf24;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    letter-spacing: 0.1em;
}

.testimonial-text {
    color: #475569;
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-style: italic;
}

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

.author-avatar {
    width: 50px;
    height: 50px;
    background: #3b82f6;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    flex-shrink: 0;
}

.author-info strong {
    display: block;
    color: #1e293b;
}

.author-info span {
    display: block;
    color: #64748b;
    font-size: 0.9rem;
}

/* ============================================
   PRICE SECTION
   ============================================ */

.price {
    background: linear-gradient(to bottom, #f0f9ff, #ffffff);
}

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

@media (min-width: 768px) {
    .price-content {
        grid-template-columns: 1fr 1fr;
    }
}

.price-box {
    /* background: #fef3c7;
    border: 2px solid #fbbf24; */
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-top: 1rem;
}

.price-amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
}

.price-original {
    color: #9ca3af;
    text-decoration: line-through;
    font-size: 1rem;
}

.price-discount {
    color: #22c55e;
    font-weight: 600;
    font-size: 0.95rem;
    margin-top: 0.5rem;
}

.price-text {
    color: #475569;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.price-benefits {
    list-style: none;
    padding-left: 0;
    margin: 1rem 0;
}

.price-benefits li {
    padding: 0.5rem 0;
    padding-left: 1.75rem;
    position: relative;
    color: #475569;
}

.price-benefits li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #22c55e;
    font-weight: bold;
}

.price-image {
    /* background: #f3f4f6; */
    border-radius: 0.5rem;
    padding: 2rem;
    display: flex;
    align-items: center;
    flex-direction: column;
    justify-content: center;
    min-height: 250px;
    text-align: center;
    /* color: #9ca3af; */
}

.price-image-box {
    /* box-shadow: 0 0 10px rgba(0, 0, 0, 0.5); */
    width: 60%;
    height: 60%;
    border-radius: 0.5rem;
    margin-bottom: 3rem;
}

/* ============================================
   GUARANTEE SECTION
   ============================================ */

.guarantee {
    background: white;
}

.guarantee-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
    margin-top: 2rem;
}

@media (min-width: 768px) {
    .guarantee-content {
        grid-template-columns: 1fr 1fr;
    }
}

.guarantee-image {
    /* background: #f3f4f6; */
    border-radius: 0.5rem;
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 250px;
    text-align: center;
    /* color: #9ca3af; */
}

.guarantee-text {
    color: #475569;
    line-height: 1.8;
}

.guarantee-text strong {
    color: #1e293b;
}

.guarantee-badge {
    background: #fef3c7;
    border: 2px solid #fbbf24;
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.badge-days {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: #1e293b;
}

.badge-text {
    display: block;
    color: #64748b;
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

/* ============================================
   FAQ SECTION
   ============================================ */

.faq {
    background: linear-gradient(to bottom, #f0f9ff, #ffffff);
}

.faq-container {
    max-width: 800px;
    margin: 2rem auto 0;
}

.faq-item {
    border: 2px solid #fed7aa;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-question {
    background: white;
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: #1e293b;
    transition: all 0.3s ease;
    user-select: none;
}

.faq-question:hover {
    background: #fafaf9;
}

.faq-question.active {
    background: #fef3c7;
}

.faq-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: 1rem;
}

.faq-icon.active {
    transform: rotate(180deg);
}

.faq-answer {
    background: #fafaf9;
    padding: 1.5rem;
    border-top: 1px solid #fed7aa;
    color: #475569;
    line-height: 1.8;
    display: none;
}

.faq-answer.active {
    display: block;
}

/* ============================================
   CTA FINAL SECTION
   ============================================ */

.cta-final {
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    color: white;
    text-align: center;
    padding: 3rem 0;
}

@media (min-width: 768px) {
    .cta-final {
        padding: 4rem 0;
    }
}

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

.cta-final p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.cta-final .btn-primary {
    background: white;
    color: #22c55e;
}

.cta-final .btn-primary:hover {
    background: #f0fdf4;
}

.cta-guarantee {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    margin-top: 1rem;
}

/* ============================================
   FOOTER
   ============================================ */

footer {
    background: #1e293b;
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-text {
    color: #94a3b8;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-link {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: white;
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 640px) {
    .hero-title {
        font-size: 1.8rem;
    }

    section h2 {
        font-size: 1.5rem;
    }

    .price-amount {
        font-size: 2rem;
    }

    .nav {
        display: none;
    }
}

/* ============================================
   LAZY LOADING OPTIMIZATION
   ============================================ */

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .header,
    .nav,
    .btn,
    .footer,
    .cta-final {
        display: none;
    }
}