:root {
  /* Cores principais */
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-accent-teal: #2dd4bf;
  --color-accent-cyan: #22d3ee;
  --color-accent-emerald: #34d399;
  --color-card-bg: #1e293b;
  --color-card-hover: #334155;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;
  
  /* Gradientes */
  --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #164e63 100%);
  --gradient-text: linear-gradient(90deg, #2dd4bf, #22d3ee, #38bdf8);
  --gradient-button: linear-gradient(90deg, #2dd4bf 0%, #22d3ee 100%);
  
  /* Espaçamentos */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Fontes */
  --font-family: 'Inter', sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3rem;
  
  /* Sombras */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-card: 0 4px 6px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-card-hover: 0 10px 25px rgba(45, 212, 191, 0.15);
  
  /* Bordas */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 1rem;

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

/* Reset e estilos base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

p {
  margin-bottom: var(--spacing-md);
}

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

a:hover {
  color: var(--color-accent-cyan);
}

img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-md);
}

ul, ol {
  margin-left: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.container {
  width: 100%;
  max-width: 1200px;
  padding: 0 var(--spacing-md);
  margin: 0 auto;
}

/* Navegação Principal */
.main-nav {
  background-color: rgba(15, 23, 42, 0.95);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-sm) 0;
  z-index: 1000;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

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

.logo a {
  color: var(--color-text-primary);
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  list-style: none;
  margin: 0;
}

.nav-links li {
  margin-left: var(--spacing-md);
}

.nav-links a {
  color: var(--color-text-secondary);
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text-primary);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-text);
  transform: scaleX(1);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-text);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-normal);
}

.nav-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 20px;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: all var(--transition-normal);
}

/* Header styles for all pages */
.page-header {
  padding: calc(var(--spacing-xl) * 2) 0 var(--spacing-xl);
  background: var(--gradient-hero);
  text-align: center;
}

.page-header h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-sm);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.page-header .subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  max-width: 800px;
  margin: 0 auto var(--spacing-md);
}

/* Botões e CTAs */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-md);
  font-weight: 600;
  text-align: center;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  margin: var(--spacing-xs) var(--spacing-xs);
  text-decoration: none;
}

.primary-btn {
  background: var(--gradient-button);
  color: var(--color-bg-primary);
  box-shadow: 0 4px 6px rgba(34, 211, 238, 0.25);
}

.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 7px 14px rgba(34, 211, 238, 0.3);
  color: var(--color-bg-primary);
}

.secondary-btn {
  background-color: transparent;
  color: var(--color-accent-teal);
  border: 2px solid var(--color-accent-teal);
}

.secondary-btn:hover {
  background-color: rgba(34, 211, 238, 0.1);
  transform: translateY(-2px);
  color: var(--color-accent-teal);
}

/* Formulários */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-bg-secondary);
  background-color: var(--color-card-bg);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent-teal);
  box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.25);
}

.checkbox-container {
  display: flex;
  align-items: center;
}

.checkbox-container input {
  width: auto;
  margin-right: var(--spacing-xs);
}

/* Footer */
footer {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-lg) 0;
  position: relative;
  overflow: hidden;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
}

.footer-column {
  flex: 1;
  margin: var(--spacing-sm);
  min-width: 200px;
}

.footer-column h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
  position: relative;
}

.footer-column h4::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--color-accent-teal);
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.footer-links a {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-accent-teal);
}

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

.social-links {
  display: flex;
}

.social-link {
  margin-left: var(--spacing-sm);
  color: var(--color-text-secondary);
}

.social-link:hover {
  color: var(--color-accent-teal);
}

/* Responsividade */
@media (min-width: 480px) {
  .hero h1 {
    font-size: var(--font-size-4xl);
  }
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .cards-container {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero h1 {
    font-size: var(--font-size-4xl);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
}

@media (min-width: 1024px) {
  .cards-container {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
}

@media (min-width: 1280px) {
  .container {
    padding: 0;
  }
}

/* Responsividade para a navegação */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .footer-content {
    flex-direction: column;
  }
  
  .footer-column {
    margin-bottom: var(--spacing-md);
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .social-links {
    margin-top: var(--spacing-sm);
    justify-content: center;
  }
  
  .social-link:first-child {
    margin-left: 0;
  }
}

/* Estilos para seções e componentes comuns */
.section {
  padding: var(--spacing-xl) 0;
  position: relative;
}

.alt-bg {
  background-color: var(--color-bg-secondary);
}

.section-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-lg);
  text-align: center;
  color: var(--color-text-primary);
}

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

/* Estilos para cards e containers */
.cards-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.card {
  background-color: var(--color-card-bg);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
  flex: 1 1 300px;
  max-width: 380px;
  display: flex;
  flex-direction: column;
}

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

.card h3 {
  margin-bottom: var(--spacing-sm);
  color: var(--color-accent-teal);
}

.callout {
  background-color: rgba(45, 212, 191, 0.1);
  border-left: 4px solid var(--color-accent-teal);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  margin: var(--spacing-lg) 0;
  display: flex;
  align-items: flex-start;
}

.callout-icon {
  font-size: var(--font-size-2xl);
  margin-right: var(--spacing-sm);
}

.callout-content {
  flex: 1;
}

.callout-content strong {
  color: var(--color-accent-teal);
  display: block;
  margin-bottom: var(--spacing-xs);
}

/* Tabs interface */
.tabs {
  margin: var(--spacing-lg) 0;
}

.tab-headers {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tab-header {
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: var(--font-size-md);
  font-weight: 500;
  transition: all var(--transition-fast);
  position: relative;
}

.tab-header:after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-text);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.tab-header:hover {
  color: var(--color-text-primary);
}

.tab-header.active {
  color: var(--color-accent-teal);
}

.tab-header.active:after {
  transform: scaleX(1);
}

.tab-content {
  display: none;
  padding: var(--spacing-md) 0;
}

.tab-content.active {
  display: block;
}

.tab-flex {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.tab-text {
  flex: 2;
  min-width: 300px;
}

.tab-image {
  flex: 1;
  min-width: 250px;
}

.case-study {
  background-color: rgba(45, 212, 191, 0.05);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  border: 1px solid rgba(45, 212, 191, 0.1);
}

.case-study h4 {
  color: var(--color-accent-teal);
  margin-bottom: var(--spacing-xs);
}

/* Feature lists */
.feature-list {
  list-style: none;
  margin-left: 0;
}

.feature-list li {
  margin-bottom: var(--spacing-sm);
  position: relative;
  padding-left: var(--spacing-md);
}

.feature-list li:before {
  content: '•';
  color: var(--color-accent-teal);
  position: absolute;
  left: 0;
  font-weight: bold;
}

.feature-list li strong {
  color: var(--color-text-primary);
}

.feature-list.large li {
  margin-bottom: var(--spacing-md);
}

/* Accordion */
.accordion {
  margin-bottom: var(--spacing-sm);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  background-color: var(--color-card-bg);
}

.accordion-header {
  padding: var(--spacing-md);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color var(--transition-fast);
}

.accordion-header:hover {
  background-color: var(--color-card-hover);
}

.accordion-header h3 {
  margin: 0;
  font-size: var(--font-size-lg);
}

.accordion-icon {
  font-size: var(--font-size-xl);
  color: var(--color-accent-teal);
  transition: transform var(--transition-fast);
}

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

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  padding: 0 var(--spacing-md);
}

.accordion.active .accordion-content {
  padding-bottom: var(--spacing-md);
}

/* ======================================
   Estilos para a página de Glossário
   ====================================== */

.glossary-container {
  margin: var(--spacing-lg) 0;
}

.glossary-filter {
  margin-bottom: var(--spacing-md);
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
}

.filter-label {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
}

.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: var(--spacing-sm);
}

.filter-btn {
  background-color: var(--color-card-bg);
  color: var(--color-text-primary);
  border: 1px solid var(--color-card-hover);
  border-radius: var(--border-radius-sm);
  padding: 0.5rem 0.75rem;
  font-size: var(--font-size-md);
  cursor: pointer;
  transition: all var(--transition-medium);
}

.filter-btn:hover {
  background-color: var(--color-card-hover);
  border-color: var(--color-accent-teal);
}

.filter-btn.active {
  background-color: var(--color-accent-teal);
  color: var(--color-bg-primary);
  border-color: var(--color-accent-teal);
  font-weight: 600;
}

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

.glossary-letter {
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  background-color: var(--color-bg-secondary);
  box-shadow: var(--shadow-md);
  border-left: 4px solid var(--color-accent-teal);
}

.glossary-letter h2 {
  color: var(--color-accent-teal);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-xs);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.glossary-letter dl {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

.glossary-letter dt {
  font-weight: 600;
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.glossary-letter dd {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

@media (max-width: 768px) {
  .filter-buttons {
    justify-content: center;
  }
  
  .filter-btn {
    font-size: var(--font-size-sm);
    padding: 0.3rem 0.5rem;
  }
}

/* ======================================
   Estilos para a página de Newsletter
   ====================================== */

.newsletter-container {
  max-width: 1200px;
  margin: 0 auto;
}

.newsletter-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.newsletter-benefits {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
}

.newsletter-benefits h2 {
  color: var(--color-accent-teal);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-2xl);
}

.benefits-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.benefits-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.benefit-icon {
  font-size: 2rem;
  background: var(--gradient-button);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.benefit-text strong {
  display: block;
  color: var(--color-text-primary);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.benefit-text p {
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.6;
}

.newsletter-form-container {
  position: relative;
}

.newsletter-form {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(45, 212, 191, 0.2);
}

.newsletter-form h3 {
  color: var(--color-accent-teal);
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-xl);
}

.newsletter-form > p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

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

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

.form-group label {
  color: var(--color-text-primary);
  font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="email"] {
  background-color: var(--color-bg-primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-sm);
  padding: var(--spacing-sm);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  transition: border-color var(--transition-fast);
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus {
  border-color: var(--color-accent-teal);
  outline: none;
}

.form-group input.invalid {
  border-color: var(--color-error);
}

.error-message {
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: 0.25rem;
}

.checkbox-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
}

.checkbox-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
  color: var(--color-text-secondary);
}

.checkbox-container input[type="checkbox"] {
  accent-color: var(--color-accent-teal);
  width: 1rem;
  height: 1rem;
}

.terms-checkbox {
  margin-top: var(--spacing-xs);
}

.terms-checkbox.invalid {
  color: var(--color-error);
}

.terms-checkbox a {
  color: var(--color-accent-teal);
  text-decoration: none;
}

.terms-checkbox a:hover {
  text-decoration: underline;
}

.full-width-btn {
  width: 100%;
  margin-top: var(--spacing-sm);
}

.form-note {
  margin-top: var(--spacing-md);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.success-message {
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--color-success);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  text-align: center;
}

.success-message h3 {
  color: var(--color-success);
  margin-bottom: var(--spacing-sm);
}

.success-message p {
  color: var(--color-text-secondary);
  margin: var(--spacing-xs) 0;
}

.newsletter-samples {
  margin-top: var(--spacing-lg);
}

.newsletter-samples h3 {
  color: var(--color-text-primary);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

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

.newsletter-sample {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-medium);
}

.newsletter-sample:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.sample-date {
  background-color: rgba(45, 212, 191, 0.1);
  color: var(--color-accent-teal);
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
}

.newsletter-sample h4 {
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-lg);
}

.newsletter-sample p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.6;
}

.sample-link {
  color: var(--color-accent-teal);
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.sample-link:hover {
  text-decoration: underline;
}

.sample-link:after {
  content: "→";
  transition: transform var(--transition-fast);
}

.sample-link:hover:after {
  transform: translateX(4px);
}

.testimonials {
  margin-top: var(--spacing-lg);
}

.testimonials h3 {
  color: var(--color-text-primary);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

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

.testimonial {
  background-color: var(--color-bg-secondary);
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

.testimonial-content {
  padding: var(--spacing-md);
  position: relative;
}

.testimonial-content:before {
  content: """;
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  font-size: 4rem;
  color: rgba(45, 212, 191, 0.1);
  line-height: 1;
  font-family: serif;
}

.testimonial-content p {
  position: relative;
  color: var(--color-text-secondary);
  line-height: 1.6;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: rgba(0, 0, 0, 0.2);
}

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

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

.author-info span {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

@media (max-width: 992px) {
  .newsletter-content {
    grid-template-columns: 1fr;
  }
  
  .samples-container,
  .testimonial-container {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .checkbox-group {
    grid-template-columns: 1fr;
  }
  
  .samples-container,
  .testimonial-container {
    grid-template-columns: 1fr;
  }
}

/* Layout flexível para conteúdo com imagens */
.flex-container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-lg);
}

.text-block {
  flex: 1;
  min-width: 300px;
}

.image-block {
  flex: 1;
  min-width: 300px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.illustration {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-lg);
  transition: transform var(--transition-medium);
}

.illustration:hover {
  transform: scale(1.05);
}

/* Ícones SVG */
.icon-container {
  display: flex;
  justify-content: center;
  margin: var(--spacing-md) 0;
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-sm);
  transition: transform var(--transition-medium);
}

.card:hover .feature-icon {
  transform: translateY(-5px);
}

@media (max-width: 768px) {
  .flex-container {
    flex-direction: column;
  }
  
  .image-block {
    order: -1; /* Imagens no topo em dispositivos móveis */
  }
  
  .feature-icon {
    width: 60px;
    height: 60px;
  }
}