/* ===================================
   LIMPA PEDRAS MACHADO - LANDING PAGE
   Design System & Global Styles
   =================================== */

/* CSS Variables - Design Tokens */
:root {
    /* Colors - Green Palette */
    --primary-green: #2d5016;
    --primary-green-light: #3d6b1f;
    --primary-green-dark: #1a3009;
    --accent-green: #4a8c2a;
    --accent-green-light: #5fa835;
    --light-green: #e8f5e0;
    --very-light-green: #f4faf1;
    
    /* Neutral Colors */
    --white: #ffffff;
    --off-white: #fafafa;
    --light-gray: #f5f5f5;
    --gray: #e0e0e0;
    --medium-gray: #9e9e9e;
    --dark-gray: #424242;
    --black: #1a1a1a;
    
    /* Semantic Colors */
    --success: #4caf50;
    --warning: #ff9800;
    --error: #f44336;
    --info: #2196f3;
    
    /* Typography */
    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    --shadow-green: 0 10px 30px rgba(45, 80, 22, 0.2);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 2rem;
}

/* ===================================
   Reset & Base Styles
   =================================== */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-regular);
    line-height: 1.6;
    color: var(--black);
    background-color: var(--white);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ===================================
   Utility Classes
   =================================== */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Section Spacing */
section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--light-green), var(--very-light-green));
    color: var(--primary-green);
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: var(--font-weight-extrabold);
    color: var(--primary-green-dark);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

.section-title-small {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: var(--font-weight-bold);
    color: var(--primary-green-dark);
    margin-bottom: var(--spacing-md);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-light));
    color: var(--white);
    box-shadow: var(--shadow-green);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(45, 80, 22, 0.3);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

.btn-arrow {
    font-size: 1.25rem;
    transition: transform var(--transition-base);
}

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

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

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* ===================================
   Header & Navigation
   =================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-green-dark);
}

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

.logo strong {
    color: var(--accent-green);
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav a {
    font-size: 0.9375rem;
    font-weight: var(--font-weight-semibold);
    color: var(--dark-gray);
    transition: color var(--transition-fast);
}

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

.btn-nav {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--accent-green);
    color: var(--white);
    border-radius: var(--radius-md);
}

.btn-nav:hover {
    background: var(--accent-green-light);
    color: var(--white);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 3px;
    background: var(--primary-green);
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

/* ===================================
   Hero Section
   =================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, var(--very-light-green) 0%, var(--white) 100%);
    padding-top: 80px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle at top right, rgba(74, 140, 42, 0.1), transparent);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    animation: fadeInUp 0.8s ease;
}

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

.hero-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-light));
    color: var(--white);
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: var(--font-weight-extrabold);
    line-height: 1.1;
    color: var(--primary-green-dark);
    margin-bottom: var(--spacing-md);
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.hero-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
    color: var(--dark-gray);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--accent-green);
    color: var(--white);
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: var(--font-weight-bold);
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.price-info {
    text-align: center;
}

.price-detail {
    font-size: 0.875rem;
    color: var(--medium-gray);
}

.hero-image {
    animation: fadeInRight 0.8s ease 0.2s both;
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.product-showcase {
    position: relative;
    padding: var(--spacing-lg);
}

.product-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--accent-green);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-bold);
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
}

.product-hero-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--medium-gray);
    font-size: 0.875rem;
    animation: bounce 2s infinite;
}

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

.scroll-indicator {
    width: 2px;
    height: 30px;
    background: linear-gradient(to bottom, var(--accent-green), transparent);
}

/* ===================================
   Problem/Solution Section
   =================================== */

.problem-solution {
    background: var(--white);
}

.section-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.problem-side,
.solution-side {
    padding: var(--spacing-xl);
}

.problem-side {
    background: linear-gradient(135deg, #fff5f5, #ffffff);
    border-radius: var(--radius-xl);
}

.solution-side {
    background: linear-gradient(135deg, var(--very-light-green), var(--white));
    border-radius: var(--radius-xl);
}

.problem-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.problem-item {
    display: flex;
    gap: var(--spacing-md);
}

.problem-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.problem-item h3 {
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    color: var(--error);
    margin-bottom: var(--spacing-xs);
}

.problem-item p {
    color: var(--dark-gray);
    font-size: 0.9375rem;
}

.solution-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.solution-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-green-dark);
}

.solution-text {
    color: var(--dark-gray);
    line-height: 1.7;
}

.solution-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.solution-benefits li {
    color: var(--accent-green);
    font-weight: var(--font-weight-semibold);
}

/* ===================================
   Benefits Section
   =================================== */

.benefits {
    background: linear-gradient(180deg, var(--white), var(--very-light-green));
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.benefit-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    text-align: center;
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.benefit-card h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-green-dark);
    margin-bottom: var(--spacing-sm);
}

.benefit-card p {
    color: var(--dark-gray);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.benefit-highlight {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--light-green), var(--very-light-green));
    color: var(--accent-green);
    font-weight: var(--font-weight-bold);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
}

/* ===================================
   Product Showcase Section
   =================================== */

.product-showcase-section {
    background: var(--white);
}

.product-display {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.product-main-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.product-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.product-badge-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--accent-green);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: var(--radius-full);
    width: fit-content;
}

.product-name {
    font-size: 2.5rem;
    font-weight: var(--font-weight-extrabold);
    color: var(--primary-green-dark);
}

.product-rating {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.stars {
    color: #ffc107;
    font-size: 1.25rem;
}

.rating-text {
    color: var(--medium-gray);
    font-size: 0.9375rem;
}

.product-price {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) 0;
    border-top: 2px solid var(--gray);
    border-bottom: 2px solid var(--gray);
}

.price-current {
    font-size: 2.5rem;
    font-weight: var(--font-weight-extrabold);
    color: var(--accent-green);
}

.price-unit {
    font-size: 1rem;
    color: var(--medium-gray);
}

.product-specs h4 {
    font-size: 1.125rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-green-dark);
    margin-bottom: var(--spacing-sm);
}

.product-specs ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.product-specs li {
    color: var(--dark-gray);
    padding-left: var(--spacing-md);
    position: relative;
}

.product-specs li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-green);
    font-weight: var(--font-weight-bold);
}

.product-cta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.trust-badge {
    text-align: center;
    color: var(--medium-gray);
    font-size: 0.875rem;
}

/* ===================================
   Before/After Section
   =================================== */

.before-after {
    background: linear-gradient(180deg, var(--very-light-green), var(--white));
}

.ba-gallery {
    max-width: 700px;
    margin: 0 auto;
}

.ba-single-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.ba-image {
    width: 100%;
    height: auto;
    display: block;
}

/* ===================================
   How to Use Section
   =================================== */

.how-to-use {
    background: var(--white);
}

.steps-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.step-item {
    flex: 1;
    max-width: 300px;
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-light));
    color: var(--white);
    font-size: 1.5rem;
    font-weight: var(--font-weight-extrabold);
    border-radius: 50%;
    box-shadow: var(--shadow-green);
}

.step-image-placeholder {
    background: linear-gradient(135deg, var(--light-green), var(--very-light-green));
    border: 2px dashed var(--accent-green);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.step-image-placeholder p {
    font-size: 0.875rem;
    color: var(--accent-green);
    font-weight: var(--font-weight-semibold);
}

.step-item h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-green-dark);
    margin-bottom: var(--spacing-xs);
}

.step-item p {
    color: var(--dark-gray);
    line-height: 1.6;
}

.step-arrow {
    font-size: 2rem;
    color: var(--accent-green);
    flex-shrink: 0;
}

.usage-tips {
    background: linear-gradient(135deg, var(--very-light-green), var(--light-green));
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border-left: 4px solid var(--accent-green);
}

.usage-tips h4 {
    font-size: 1.125rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-green-dark);
    margin-bottom: var(--spacing-md);
}

.usage-tips ul {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-sm);
}

.usage-tips li {
    color: var(--dark-gray);
    padding-left: var(--spacing-md);
    position: relative;
}

.usage-tips li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-green);
    font-weight: var(--font-weight-bold);
}

/* ===================================
   Video Section
   =================================== */

.video-section {
    background: linear-gradient(180deg, var(--white), var(--very-light-green));
}

.video-container {
    max-width: 900px;
    margin: 0 auto;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio default */
    height: 0;
}

.video-container.video-vertical {
    max-width: 350px;
    height: 620px;
    padding-bottom: 0;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* ===================================
   ROI/Savings Section
   =================================== */

.roi-section {
    background: var(--white);
}

.comparison-table {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.comparison-column {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.comparison-column.losing {
    border: 2px solid #ffebee;
}

.comparison-column.winning {
    border: 2px solid var(--light-green);
    box-shadow: var(--shadow-green);
}

.comparison-column h3 {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.comparison-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.comparison-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm);
    background: var(--light-gray);
    border-radius: var(--radius-md);
}

.comparison-item.highlight {
    background: linear-gradient(135deg, var(--light-green), var(--very-light-green));
    font-weight: var(--font-weight-semibold);
}

.comparison-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin: var(--spacing-md) 0;
}

.comparison-benefits p {
    color: var(--accent-green);
    font-size: 0.9375rem;
    font-weight: var(--font-weight-semibold);
}

.comparison-total {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--light-gray);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
    font-size: 1.25rem;
}

.comparison-total.winning-total {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-light));
    color: var(--white);
}

.comparison-note {
    text-align: center;
    font-size: 0.875rem;
    color: var(--medium-gray);
    margin-top: var(--spacing-sm);
}

.comparison-note.winning-note {
    color: var(--accent-green);
    font-weight: var(--font-weight-semibold);
}

.vs-divider {
    font-size: 2rem;
    font-weight: var(--font-weight-extrabold);
    color: var(--accent-green);
    background: linear-gradient(135deg, var(--light-green), var(--very-light-green));
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
}

.roi-highlight {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-light));
    color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-green);
}

.roi-highlight h3 {
    font-size: 1.75rem;
    font-weight: var(--font-weight-extrabold);
    margin-bottom: var(--spacing-sm);
}

.roi-highlight p {
    font-size: 1.125rem;
}

/* ===================================
   Testimonials Section
   =================================== */

.testimonials {
    background: linear-gradient(180deg, var(--very-light-green), var(--white));
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.testimonial-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.testimonial-rating {
    color: #ffc107;
    font-size: 1.25rem;
}

.testimonial-text {
    color: var(--dark-gray);
    line-height: 1.7;
    font-style: italic;
    flex-grow: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--gray);
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-light));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: 1.125rem;
}

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

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

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

/* ===================================
   FAQ Section
   =================================== */

.faq {
    background: var(--white);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.faq-item {
    background: var(--white);
    border: 2px solid var(--gray);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    border-color: var(--accent-green);
}

.faq-item.active {
    border-color: var(--accent-green);
    box-shadow: var(--shadow-md);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    user-select: none;
}

.faq-question h3 {
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    color: var(--primary-green-dark);
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--accent-green);
    font-weight: var(--font-weight-bold);
    transition: transform var(--transition-base);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

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

.faq-answer p {
    padding: 0 var(--spacing-lg) var(--spacing-md);
    color: var(--dark-gray);
    line-height: 1.7;
}

/* ===================================
   Final CTA Section
   =================================== */

.final-cta {
    background: linear-gradient(135deg, var(--very-light-green), var(--light-green));
    padding: var(--spacing-3xl) 0;
}

.cta-content {
    text-align: center;
}

.cta-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: var(--font-weight-extrabold);
    color: var(--primary-green-dark);
    margin-bottom: var(--spacing-md);
}

.cta-subtitle {
    font-size: 1.25rem;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.offer-box {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-2xl);
    max-width: 900px;
    margin: 0 auto var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.offer-image-container {
    display: flex;
    align-items: center;
    justify-content: center;
}

.offer-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
}

.offer-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: left;
}

.offer-details h3 {
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-green-dark);
}

.offer-includes {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.offer-includes li {
    color: var(--dark-gray);
    font-size: 1rem;
}

.offer-price {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) 0;
    border-top: 2px solid var(--gray);
    border-bottom: 2px solid var(--gray);
}

.price-label {
    font-size: 0.875rem;
    color: var(--medium-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.price-value {
    font-size: 2.5rem;
    font-weight: var(--font-weight-extrabold);
    color: var(--accent-green);
}

.price-installment {
    font-size: 1rem;
    color: var(--medium-gray);
}

.trust-badges {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-top: var(--spacing-sm);
}

.trust-badges span {
    font-size: 0.875rem;
    color: var(--medium-gray);
}

.urgency-message {
    background: linear-gradient(135deg, #fff3cd, #fff8e1);
    border-left: 4px solid var(--warning);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    max-width: 600px;
    margin: 0 auto;
}

.urgency-message p {
    color: var(--dark-gray);
    font-size: 1rem;
}

/* ===================================
   Footer
   =================================== */

.footer {
    background: var(--primary-green-dark);
    color: var(--white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-column h4 {
    font-size: 1.125rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    color: var(--accent-green-light);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-column a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--accent-green-light);
}

.footer-column li {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9375rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.social-links a:hover {
    color: var(--accent-green-light);
}

/* ===================================
   Floating WhatsApp Button
   =================================== */

.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #25d366, #128c7e);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: all var(--transition-base);
    animation: float 3s ease-in-out infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ===================================
   RESPONSIVE DESIGN - MOBILE FIRST
   =================================== */

/* Tablet - 768px and below */
@media (max-width: 768px) {
    :root {
        --container-padding: 1.5rem;
        --spacing-3xl: 4rem;
        --spacing-2xl: 3rem;
    }

    section {
        padding: var(--spacing-2xl) 0;
    }

    /* Navigation */
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        transition: all var(--transition-base);
        pointer-events: none;
    }

    .nav.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    /* Hero Section */
    .hero {
        min-height: auto;
        padding-top: 100px;
        padding-bottom: var(--spacing-2xl);
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .hero-image {
        order: -1;
    }

    .product-image-placeholder {
        min-height: 300px;
        padding: var(--spacing-xl);
    }

    .hero-scroll {
        display: none;
    }

    /* Problem/Solution */
    .section-split {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    /* Benefits */
    .benefits-grid {
        grid-template-columns: 1fr;
    }

    /* Product Showcase */
    .product-display {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .product-main-image {
        min-height: 300px;
        padding: var(--spacing-xl);
    }

    /* Before/After */
    .ba-gallery {
        grid-template-columns: 1fr;
    }

    /* How to Use */
    .steps-container {
        flex-direction: column;
    }

    .step-arrow {
        transform: rotate(90deg);
    }

    .usage-tips ul {
        grid-template-columns: 1fr;
    }

    /* ROI Section */
    .comparison-table {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .vs-divider {
        transform: rotate(90deg);
        margin: var(--spacing-md) auto;
    }

    /* Testimonials */
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    /* Final CTA */
    .offer-box {
        grid-template-columns: 1fr;
        padding: var(--spacing-lg);
    }

    .offer-details {
        text-align: center;
    }

    .offer-includes {
        text-align: left;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    /* WhatsApp Float */
    .whatsapp-float {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
        font-size: 1.5rem;
    }
}

/* Mobile - 480px and below */
@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
        font-size: 14px;
    }

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

    .section-title {
        font-size: 1.75rem;
    }

    .btn-large {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 1rem;
    }

    .product-name {
        font-size: 1.75rem;
    }

    .price-current,
    .price-value {
        font-size: 2rem;
    }

    .cta-title {
        font-size: 1.75rem;
    }

    .step-image-placeholder {
        min-height: 120px;
        padding: var(--spacing-md);
    }

    .ba-placeholder {
        min-height: 200px;
    }

    .video-container.video-vertical {
        max-width: 100%;
        padding-bottom: 177.78%; /* Mantém proporção 9:16 */
    }
}

/* Animations for scroll reveal */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Print styles */
@media print {
    .header,
    .whatsapp-float,
    .hero-scroll {
        display: none;
    }

    section {
        page-break-inside: avoid;
    }
}