/* ==========================================
   Reset & Base Styles
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Cores principais - tons de verde natural */
    --primary-green: #2d5016;
    --secondary-green: #4a7c2c;
    --light-green: #7fb069;
    --accent-green: #9ac77f;
    --pale-green: #e8f5e3;

    /* Cores neutras */
    --white: #ffffff;
    --off-white: #fafaf8;
    --light-gray: #f5f5f3;
    --medium-gray: #8b8b83;
    --dark-gray: #3a3a35;
    --black: #1a1a16;

    /* Gradientes */
    --gradient-hero: linear-gradient(135deg, rgba(45, 80, 22, 0.95) 0%, rgba(74, 124, 44, 0.9) 100%);
    --gradient-card: linear-gradient(to bottom, var(--white) 0%, var(--pale-green) 100%);

    /* Tipografia */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Lato', sans-serif;

    /* Sombras */
    --shadow-sm: 0 2px 8px rgba(45, 80, 22, 0.08);
    --shadow-md: 0 4px 16px rgba(45, 80, 22, 0.12);
    --shadow-lg: 0 8px 32px rgba(45, 80, 22, 0.16);

    /* Transições */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Espaçamentos */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--off-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* ==========================================
   Header & Navigation
   ========================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-medium);
}

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

.nav {
    padding: 1rem 0;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-green);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.logo:hover {
    color: var(--secondary-green);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

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

.nav-menu a:not(.btn-nav):hover {
    color: var(--secondary-green);
}

.nav-menu a:not(.btn-nav)::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--light-green);
    transition: width var(--transition-fast);
}

.nav-menu a:not(.btn-nav):hover::after {
    width: 100%;
}

.btn-nav {
    background-color: var(--secondary-green);
    color: var(--white) !important;
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    transition: all var(--transition-fast);
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-green);
    border-radius: 3px;
    transition: all var(--transition-fast);
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 2px solid transparent;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: var(--primary-green);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background-color: var(--white);
    color: var(--secondary-green);
}

.btn-product {
    background-color: var(--light-green);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
}

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

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.1rem;
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero), url('https://images.unsplash.com/photo-1466692476868-aef1dfb1e735?w=1920&h=1080&fit=crop') center/cover;
    position: relative;
    margin-top: 70px;
    color: var(--white);
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-sm);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-hero);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-style: italic;
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-indicator span {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid var(--white);
    border-radius: 20px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background-color: var(--white);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0%, 20% {
        transform: translateX(-50%) translateY(0);
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: translateX(-50%) translateY(20px);
        opacity: 0;
    }
}

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

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

.section-header h2 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--primary-green);
    margin-bottom: var(--spacing-sm);
}

.section-header p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--medium-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================
   Nutrition Comparison Section
   ========================================== */
.nutrition-comparison {
    padding: var(--spacing-xl) var(--spacing-sm);
    background-color: var(--white);
}

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

.comparison-card {
    background: var(--gradient-card);
    padding: var(--spacing-md);
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-medium);
    border: 2px solid transparent;
}

.comparison-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-green);
}

.comparison-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
    filter: drop-shadow(2px 2px 4px rgba(0, 0, 0, 0.1));
}

.comparison-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--secondary-green);
    margin-bottom: 0.5rem;
}

.comparison-card h3 {
    font-size: 1.25rem;
    color: var(--primary-green);
    margin-bottom: 0.5rem;
}

.comparison-card p {
    color: var(--medium-gray);
    font-size: 0.95rem;
}

/* ==========================================
   Composition Section
   ========================================== */
.composition {
    padding: var(--spacing-xl) var(--spacing-sm);
    background: linear-gradient(135deg, var(--pale-green) 0%, var(--white) 100%);
}

.composition-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.composition-item {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-medium);
}

.composition-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.composition-number,
.composition-icon {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 700;
    color: var(--secondary-green);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.composition-item h3 {
    font-size: 1.1rem;
    color: var(--primary-green);
}

/* ==========================================
   Benefits Section
   ========================================== */
.benefits {
    padding: var(--spacing-xl) var(--spacing-sm);
    background-color: var(--white);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.benefit-card {
    background-color: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: 15px;
    text-align: center;
    transition: all var(--transition-medium);
    border: 2px solid transparent;
}

.benefit-card:hover {
    background-color: var(--pale-green);
    border-color: var(--light-green);
    transform: translateY(-5px);
}

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

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

.benefit-card p {
    color: var(--dark-gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ==========================================
   Products Section
   ========================================== */
.products {
    padding: var(--spacing-xl) var(--spacing-sm);
    background: linear-gradient(to bottom, var(--white) 0%, var(--pale-green) 100%);
}

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

.product-card {
    background-color: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-medium);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    position: relative;
    overflow: hidden;
    height: 300px;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: var(--secondary-green);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.product-info {
    padding: var(--spacing-md);
}

.product-info h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--primary-green);
    margin-bottom: var(--spacing-sm);
}

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

/* ==========================================
   How to Use Section
   ========================================== */
.how-to-use {
    padding: var(--spacing-xl) var(--spacing-sm);
    background-color: var(--white);
}

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

.usage-card {
    background: var(--gradient-card);
    padding: var(--spacing-md);
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    position: relative;
    padding-top: 4rem;
}

.usage-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 60px;
    background-color: var(--secondary-green);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    box-shadow: var(--shadow-md);
}

.usage-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--primary-green);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.usage-card ul {
    list-style: none;
}

.usage-card li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--dark-gray);
    line-height: 1.6;
}

.usage-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-green);
    font-weight: 700;
    font-size: 1.2rem;
}

/* ==========================================
   FAQ Section
   ========================================== */
.faq {
    padding: var(--spacing-xl) var(--spacing-sm);
    background: linear-gradient(to bottom, var(--pale-green) 0%, var(--white) 100%);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--white);
    border-radius: 10px;
    margin-bottom: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-medium);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-green);
    text-align: left;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    background-color: var(--pale-green);
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--secondary-green);
    transition: transform var(--transition-fast);
    font-weight: 300;
}

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

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

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

.faq-answer p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    color: var(--dark-gray);
    line-height: 1.8;
}

/* ==========================================
   Final CTA Section
   ========================================== */
.final-cta {
    padding: var(--spacing-xl) var(--spacing-sm);
    background: var(--gradient-hero), url('https://images.unsplash.com/photo-1512621776951-a57141f2eefd?w=1920&h=600&fit=crop') center/cover;
    position: relative;
    text-align: center;
    color: var(--white);
}

.final-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-hero);
}

.final-cta-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
}

.final-cta h2 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-sm);
}

.final-cta p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background-color: var(--primary-green);
    color: var(--white);
    padding: var(--spacing-lg) var(--spacing-sm) var(--spacing-md);
}

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

.footer-section h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--accent-green);
}

.footer-section p {
    line-height: 1.8;
    opacity: 0.9;
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.9;
    transition: opacity var(--transition-fast);
}

.footer-section a:hover {
    opacity: 1;
    text-decoration: underline;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-bottom p {
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.disclaimer {
    font-size: 0.85rem;
    font-style: italic;
}

/* ==========================================
   Animations
   ========================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-slow);
}

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

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform var(--transition-medium);
        gap: var(--spacing-sm);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .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 {
        min-height: 80vh;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-cta .btn {
        width: 100%;
        max-width: 300px;
    }

    .comparison-grid,
    .composition-grid,
    .benefits-grid,
    .products-grid,
    .usage-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xl: 3rem;
        --spacing-lg: 2rem;
    }

    .section-header {
        margin-bottom: var(--spacing-md);
    }
}

/* ==========================================
   Print Styles
   ========================================== */
@media print {
    .header,
    .mobile-menu-toggle,
    .scroll-indicator,
    .btn {
        display: none;
    }
}