/* ============================================================================
   ANALÍTICA ASSESSORIA CONTÁBIL - STYLESHEET PRINCIPAL
   Design System: Profissional, Confiável, Educativo
   ============================================================================ */

:root {
  /* Paleta de Cores - Verde Institucional com Neutros Sofisticados */
  --primary-dark: #1a4d2e;
  --primary-medium: #2d6a4f;
  --primary-light: #52b788;
  --accent: #74c69d;
  --accent-light: #95d5b2;
  
  --background: #f1faee;
  --background-alt: #ffffff;
  --background-section: #d8f3dc;
  
  --text-primary: #1a1a1a;
  --text-secondary: #4a4a4a;
  --text-muted: #6a6a6a;
  --text-inverse: #ffffff;
  
  --border-light: #e0e0e0;
  --border-medium: #c0c0c0;
  
  /* Tipografia */
  --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: "SF Mono", Monaco, "Cascadia Code", "Courier New", monospace;
  
  /* Espaçamento */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  
  /* Layout */
  --max-width: 1200px;
  --max-width-text: 800px;
  --border-radius: 8px;
  --border-radius-lg: 16px;
  
  /* Sombras */
  --shadow-sm: 0 2px 8px rgba(26, 77, 46, 0.08);
  --shadow-md: 0 4px 16px rgba(26, 77, 46, 0.12);
  --shadow-lg: 0 8px 32px rgba(26, 77, 46, 0.16);
  
  /* Transições */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

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

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

body {
  font-family: var(--font-primary);
  color: var(--text-primary);
  background-color: var(--background);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ============================================================================
   TIPOGRAFIA
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary-dark);
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1.1rem;
}

p {
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
  max-width: 70ch;
}

.lead {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.text-small {
  font-size: 0.875rem;
  line-height: 1.5;
}

.text-mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* ============================================================================
   LAYOUT E CONTAINERS
   ============================================================================ */

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

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

.section {
  padding: var(--space-2xl) 0;
  position: relative;
}

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

.section-accent {
  background-color: var(--background-section);
}

/* ============================================================================
   HEADER E NAVEGAÇÃO
   ============================================================================ */

.header {
  background-color: var(--background-alt);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: box-shadow var(--transition-base);
}

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

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) 0;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

.logo {
  height: 48px;
}

.nav-menu {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.nav-link {
  font-weight: 500;
  color: var(--text-primary);
  padding: var(--space-xs) 0;
  position: relative;
  transition: color var(--transition-base);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-light);
  transition: width var(--transition-base);
}

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

.nav-link:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--primary-dark);
  margin: 5px 0;
  transition: all var(--transition-base);
}

/* ============================================================================
   HERO / ABERTURA CONCEITUAL
   ============================================================================ */

.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--background) 0%, var(--background-section) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background-image: url('../assets/images/hero.svg');
  background-size: cover;
  background-position: center;
  opacity: 0.4;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary-medium);
  background-color: var(--accent-light);
  padding: var(--space-xs) var(--space-md);
  border-radius: 20px;
  margin-bottom: var(--space-md);
}

.hero h1 {
  margin-bottom: var(--space-md);
  animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  animation: fadeInUp 0.8s ease 0.4s backwards;
}

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

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-medium);
  display: block;
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================================================
   CARDS E COMPONENTES
   ============================================================================ */

.card {
  background-color: var(--background-alt);
  border-radius: var(--border-radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid var(--border-light);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-medium));
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  color: var(--text-inverse);
  font-size: 1.5rem;
  font-weight: 700;
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.card p {
  color: var(--text-secondary);
  margin-bottom: 0;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
}

/* ============================================================================
   TABELAS E LISTAS
   ============================================================================ */

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  background-color: var(--background-alt);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.comparison-table thead {
  background-color: var(--primary-dark);
  color: var(--text-inverse);
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--border-light);
}

.comparison-table th {
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
}

.comparison-table tbody tr:hover {
  background-color: var(--background-section);
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  padding: var(--space-sm) 0;
  padding-left: var(--space-lg);
  position: relative;
  color: var(--text-secondary);
}

.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-light);
  font-weight: 700;
  font-size: 1.2em;
}

/* ============================================================================
   FAQ ACCORDION
   ============================================================================ */

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

.faq-item {
  background-color: var(--background-alt);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: box-shadow var(--transition-base);
}

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

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

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

.faq-icon {
  font-size: 1.5rem;
  color: var(--primary-medium);
  transition: transform var(--transition-base);
}

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

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

.faq-answer-content {
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 1000px;
}

/* ============================================================================
   FORMULÁRIO DE CONTATO
   ============================================================================ */

.contact-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-medium) 100%);
  color: var(--text-inverse);
}

.contact-section h2,
.contact-section p {
  color: var(--text-inverse);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-xl);
  align-items: start;
}

.contact-info h3 {
  color: var(--text-inverse);
  margin-bottom: var(--space-md);
}

.info-item {
  margin-bottom: var(--space-md);
  display: flex;
  align-items: start;
  gap: var(--space-sm);
}

.info-icon {
  width: 24px;
  height: 24px;
  background-color: var(--accent-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-dark);
  font-weight: 700;
  font-size: 0.875rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.info-content {
  flex: 1;
}

.info-label {
  font-size: 0.875rem;
  opacity: 0.9;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.info-value {
  font-size: 1rem;
  font-weight: 500;
}

.contact-form {
  background-color: var(--background-alt);
  padding: var(--space-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 500;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 2px solid var(--border-light);
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
  font-size: 1rem;
  color: var(--text-primary);
  background-color: var(--background);
  transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(82, 183, 136, 0.1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-button {
  background: linear-gradient(135deg, var(--primary-medium), var(--primary-light));
  color: var(--text-inverse);
  border: none;
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-base);
  width: 100%;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.form-button:active {
  transform: translateY(0);
}

.form-message {
  padding: var(--space-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-md);
  display: none;
}

.form-message.success {
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
  display: block;
}

.form-message.error {
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
  display: block;
}

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

.footer {
  background-color: var(--primary-dark);
  color: var(--text-inverse);
  padding: var(--space-xl) 0 var(--space-md);
}

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

.footer-about h3 {
  color: var(--text-inverse);
  margin-bottom: var(--space-md);
}

.footer-about p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-links h4 {
  color: var(--text-inverse);
  font-size: 1rem;
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
  display: block;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-md);
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.4;
}

.footer-legal {
  margin-bottom: var(--space-xs);
}

.footer-legal p {
  margin-bottom: var(--space-xs);
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ============================================================================
   ANIMAÇÕES
   ============================================================================ */

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

.fade-in-up {
  animation: fadeInUp 0.6s ease;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================================
   RESPONSIVIDADE
   ============================================================================ */

@media (max-width: 968px) {
  .hero-stats {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --space-xl: 3rem;
    --space-2xl: 4rem;
  }
  
  .section {
    padding: var(--space-xl) 0;
  }
  
  .nav-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--background-alt);
    border-top: 1px solid var(--border-light);
    padding: var(--space-md);
    box-shadow: var(--shadow-md);
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }
  
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }
  
  .hero {
    min-height: auto;
    padding: var(--space-xl) 0;
  }
  
  .hero::before {
    opacity: 0.2;
  }
  
  .comparison-table {
    font-size: 0.875rem;
  }
  
  .comparison-table th,
  .comparison-table td {
    padding: var(--space-sm);
  }
}

@media (max-width: 480px) {
  .hero-stats {
    gap: var(--space-sm);
  }
  
  .stat-number {
    font-size: 1.5rem;
  }
  
  .contact-form {
    padding: var(--space-lg);
  }
}

/* ============================================================================
   UTILITÁRIOS
   ============================================================================ */

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

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background-color: var(--accent-light);
  color: var(--primary-dark);
}

.badge-success {
  background-color: #d4edda;
  color: #155724;
}

.badge-warning {
  background-color: #fff3cd;
  color: #856404;
}