/* ========================================
   TAG Solutions - Styles
   Desenvolvido por Rafael
   ======================================== */

/* CSS Variables */
:root {
    /* Colors */
    --primary: #3B82F6;
    --primary-dark: #2563EB;
    --primary-light: #60A5FA;
    --secondary: #0F172A;
    --accent: #25D366;
    --accent-dark: #128C7E;
    --background: #F8FAFC;
    --surface: #FFFFFF;
    --text-primary: #1E293B;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --border: #E2E8F0;
    --success: #10B981;
    --warning: #F59E0B;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Montserrat', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
}

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

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

ul {
    list-style: none;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

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

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

.btn-secondary:hover {
    background: #1e293b;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

.btn-whatsapp {
    background: var(--accent);
    color: white;
}

.btn-whatsapp:hover {
    background: var(--accent-dark);
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

.btn-whatsapp-large {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-2xl);
    background: var(--accent);
    color: white;
    font-size: 1.125rem;
    font-weight: 700;
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.btn-whatsapp-large:hover {
    background: var(--accent-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.whatsapp-icon {
    width: 24px;
    height: 24px;
}

.arrow-icon {
    width: 20px;
    height: 20px;
}

/* ========================================
   Header
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    transition: all var(--transition-base);
}

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

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

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

.logo-img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--secondary);
}

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

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary);
}

.header-cta {
    display: none;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--secondary);
    transition: all var(--transition-fast);
}

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

.hero {
    position: relative;
    padding: calc(72px + var(--spacing-4xl)) 0 var(--spacing-4xl);
    background: linear-gradient(135deg, var(--secondary) 0%, #1e3a5f 100%);
    color: white;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

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

.hero-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}

.hero-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    line-height: 1.15;
}

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

.hero-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xl);
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.trust-badges {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

.trust-item::before {
    content: '✓';
    color: var(--accent);
    font-weight: bold;
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.code-window {
    background: #1e1e1e;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: perspective(1000px) rotateY(-5deg) rotateX(5deg) translateY(0); }
    50% { transform: perspective(1000px) rotateY(-5deg) rotateX(5deg) translateY(-10px); }
}

.window-header {
    display: flex;
    gap: 8px;
    padding: var(--spacing-md);
    background: #2d2d2d;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.code-content {
    padding: var(--spacing-xl);
}

.code-content pre {
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 1rem;
    line-height: 1.8;
    color: #a8dadc;
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}

.hero-wave svg {
    display: block;
    width: 100%;
    height: 80px;
}

/* ========================================
   Section Common Styles
   ======================================== */

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    color: var(--secondary);
    margin-bottom: var(--spacing-md);
}

.section-title .highlight {
    color: var(--primary);
}

.section-subtitle {
    font-size: 1.0625rem;
    color: var(--text-secondary);
}

/* ========================================
   About Section
   ======================================== */

.about {
    padding: var(--spacing-4xl) 0;
    background: var(--surface);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.image-frame {
    position: relative;
}

.about-img {
    width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.experience-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--primary);
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.exp-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
}

.exp-text {
    font-size: 0.75rem;
    font-weight: 500;
    opacity: 0.9;
}

.about-intro {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.about-details {
    margin-bottom: var(--spacing-xl);
}

.detail-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.detail-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.detail-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.detail-content h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--secondary);
}

.detail-content p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.about-rafael {
    background: var(--background);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border-left: 4px solid var(--primary);
}

.rafael-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.rafael-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    overflow: hidden;
}

.rafael-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.rafael-details h4 {
    font-size: 1.125rem;
    color: var(--secondary);
}

.rafael-role {
    font-size: 0.875rem;
    color: var(--primary);
    font-weight: 500;
}

.rafael-quote {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* ========================================
   Services Section
   ======================================== */

.services {
    padding: var(--spacing-4xl) 0;
    background: var(--background);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.service-card {
    background: var(--surface);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
}

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

.service-card.featured {
    background: var(--primary);
    color: white;
    transform: scale(1.05);
}

.service-card.featured:hover {
    transform: scale(1.05) translateY(-8px);
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.service-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.service-card.featured .service-icon {
    background: rgba(255, 255, 255, 0.2);
}

.service-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--secondary);
}

.service-card.featured h3 {
    color: white;
}

.service-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.service-card.featured p {
    color: rgba(255, 255, 255, 0.85);
}

.service-features {
    font-size: 0.875rem;
}

.service-features li {
    padding: var(--spacing-sm) 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.service-card.featured .service-features li {
    color: rgba(255, 255, 255, 0.9);
}

.service-features li::before {
    content: '✓';
    color: var(--success);
    font-weight: bold;
}

/* ========================================
   Products/Pricing Section
   ======================================== */

.products {
    padding: var(--spacing-4xl) 0;
    background: var(--surface);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    align-items: start;
}

.product-card {
    background: var(--surface);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    transition: all var(--transition-base);
    position: relative;
}

.product-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.product-card.isca {
    background: linear-gradient(135deg, #fff7ed, #ffedd5);
    border-color: #fed7aa;
}

.isca-badge {
    position: absolute;
    top: -10px;
    right: 20px;
    background: var(--warning);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: var(--radius-full);
}

.product-card.featured {
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-xl);
    transform: scale(1.02);
}

.product-card.featured:hover {
    transform: scale(1.02) translateY(-4px);
}

.highlight-card {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
}

.best-value {
    background: var(--accent) !important;
}

.product-title {
    font-size: 1.25rem;
    color: var(--secondary);
    margin-bottom: var(--spacing-sm);
}

.product-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.product-price {
    margin-bottom: var(--spacing-md);
}

.price-currency {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
}

.price-value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.price-period {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.featured-price .price-currency,
.featured-price .price-value {
    color: var(--primary-dark);
}

.price-installment {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.product-features {
    margin-bottom: var(--spacing-xl);
}

.product-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.check-icon {
    width: 18px;
    height: 18px;
    color: var(--success);
    flex-shrink: 0;
}

.combo-includes {
    background: rgba(59, 130, 246, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.combo-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--primary);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.combo-list {
    font-size: 0.875rem;
}

.combo-list li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
}

.economy-badge {
    text-align: center;
    font-size: 0.875rem;
    color: var(--accent);
    font-weight: 600;
    margin-top: var(--spacing-md);
}

/* ========================================
   Diferenciais Section
   ======================================== */

.diferenciais {
    padding: var(--spacing-4xl) 0;
    background: var(--background);
}

.diferenciais-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

.diferencial-item {
    text-align: center;
    padding: var(--spacing-xl);
}

.diferencial-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
}

.diferencial-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

.diferencial-item h4 {
    font-size: 1.125rem;
    color: var(--secondary);
    margin-bottom: var(--spacing-sm);
}

.diferencial-item p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

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

.final-cta {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--secondary) 0%, #1e3a5f 100%);
    color: white;
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    margin-bottom: var(--spacing-lg);
}

.cta-small {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

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

.footer {
    background: var(--secondary);
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-logo {
    height: 48px;
    margin-bottom: var(--spacing-md);
}

.footer-brand p {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-links h5,
.footer-contact h5 {
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
    color: white;
}

.footer-links ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-light);
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-sm);
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: var(--spacing-xs);
}

/* ========================================
   WhatsApp Float Button
   ======================================== */

.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-base);
    z-index: 999;
}

.whatsapp-float:hover {
    background: var(--accent-dark);
    transform: scale(1.1);
}

.whatsapp-float svg {
    width: 32px;
    height: 32px;
    color: white;
}

/* ========================================
   Responsive Styles
   ======================================== */

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .trust-badges {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-image {
        order: -1;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .service-card.featured {
        transform: none;
        order: -1;
    }
    
    .service-card.featured:hover {
        transform: translateY(-8px);
    }
    
    .diferenciais-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }
    
    .header-cta {
        display: none;
    }
    
    .nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        padding: var(--spacing-xl);
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .mobile-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero {
        padding: calc(72px + var(--spacing-2xl)) 0 var(--spacing-2xl);
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-cta .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .diferenciais-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .product-card.featured {
        transform: none;
    }
    
    .product-card.featured:hover {
        transform: translateY(-4px);
    }
    
    .cta-buttons {
        padding: 0 var(--spacing-lg);
    }
    
    .cta-buttons .btn-whatsapp-large {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-badge {
        font-size: 0.75rem;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .price-value {
        font-size: 2.5rem;
    }
    
    .whatsapp-float {
        width: 52px;
        height: 52px;
        bottom: 16px;
        right: 16px;
    }
    
    .whatsapp-float svg {
        width: 28px;
        height: 28px;
    }
}

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

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Smooth scroll offset for fixed header */
section[id] {
    scroll-margin-top: 80px;
}

/* Animation on scroll */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

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