/* ================================================================
   ACESSO CONTABILIDADE - IDENTIDADE VISUAL EXCLUSIVA
   Paleta: Verde Profissional + Cinzas Sofisticados
   ================================================================ */

:root {
  /* Cores Principais */
  --primary: #1a4d2e;
  --primary-light: #2d7a4a;
  --primary-dark: #0f2e1c;
  --accent: #4a7c59;
  
  /* Cinzas */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Semânticas */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  
  /* Backgrounds */
  --bg-primary: #ffffff;
  --bg-secondary: #f0f9f4;
  --bg-tertiary: #e6f4ea;
  
  /* Tipografia */
  --font-system: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', 
                 Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'Courier New', Courier, monospace;
  
  /* Espaçamentos */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  
  /* Bordas */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* Sombras */
  --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, 0.1);
  
  /* Transições */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

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

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

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

body {
  font-family: var(--font-system);
  color: var(--gray-800);
  background-color: var(--bg-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
  margin-bottom: var(--space-md);
}

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

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

h5 {
  font-size: 1.125rem;
}

h6 {
  font-size: 1rem;
  font-weight: 600;
}

p {
  margin-bottom: var(--space-md);
  color: var(--gray-700);
  font-size: 1.0625rem;
  line-height: 1.7;
}

.lead {
  font-size: 1.25rem;
  line-height: 1.8;
  color: var(--gray-600);
  font-weight: 400;
}

.small {
  font-size: 0.875rem;
  color: var(--gray-600);
}

.text-muted {
  color: var(--gray-500);
}

strong {
  font-weight: 600;
  color: var(--gray-900);
}

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

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

.container-wide {
  max-width: 1400px;
}

.container-narrow {
  max-width: 900px;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
}

.logo {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--primary);
}

.logo img {
  height: 50px;
  width: auto;
}

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

.main-nav a {
  font-weight: 500;
  color: var(--gray-700);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.main-nav a:hover {
  color: var(--primary);
  background-color: var(--bg-secondary);
}

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

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--gray-700);
  transition: all var(--transition-fast);
}

/* ================================================================
   SEÇÕES
   ================================================================ */

section {
  padding: var(--space-3xl) 0;
  position: relative;
}

.section-intro {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--space-2xl);
}

.section-label {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin-bottom: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
}

.section-title {
  margin-bottom: var(--space-md);
}

.section-description {
  font-size: 1.125rem;
  color: var(--gray-600);
  line-height: 1.8;
}

/* Background alternados */
.bg-white {
  background-color: var(--bg-primary);
}

.bg-gray {
  background-color: var(--gray-50);
}

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

.bg-pattern {
  background-image: url('../assets/pattern.svg');
  background-size: 100px 100px;
  background-repeat: repeat;
}

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

.card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid var(--gray-200);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  color: var(--primary);
  font-weight: 700;
  font-size: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--gray-900);
}

.card-text {
  color: var(--gray-600);
  margin-bottom: 0;
}

/* ================================================================
   GRIDS E LAYOUTS
   ================================================================ */

.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.flex {
  display: flex;
}

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

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

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* ================================================================
   BOTÕES
   ================================================================ */

.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

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

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

/* ================================================================
   FORMULÁRIOS
   ================================================================ */

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

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--gray-700);
  font-size: 0.9375rem;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: inherit;
  font-size: 1rem;
  color: var(--gray-800);
  background-color: var(--bg-primary);
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 77, 46, 0.1);
}

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

.form-error {
  color: var(--error);
  font-size: 0.875rem;
  margin-top: var(--space-xs);
  display: none;
}

.form-input.error,
.form-textarea.error {
  border-color: var(--error);
}

.form-input.error + .form-error,
.form-textarea.error + .form-error {
  display: block;
}

.form-success {
  padding: var(--space-md);
  background-color: #ecfdf5;
  border: 1px solid #10b981;
  border-radius: var(--radius-md);
  color: #065f46;
  margin-top: var(--space-md);
  display: none;
}

.form-success.show {
  display: block;
}

/* ================================================================
   TABELAS
   ================================================================ */

.table-wrapper {
  overflow-x: auto;
  margin: var(--space-lg) 0;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-primary);
}

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

th {
  padding: var(--space-md);
  text-align: left;
  font-weight: 600;
  font-size: 0.9375rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

td {
  padding: var(--space-md);
  border-bottom: 1px solid var(--gray-200);
  color: var(--gray-700);
}

tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background-color: var(--gray-50);
}

/* ================================================================
   LISTAS CUSTOMIZADAS
   ================================================================ */

.custom-list {
  list-style: none;
  margin: var(--space-lg) 0;
}

.custom-list li {
  padding: var(--space-sm) 0 var(--space-sm) var(--space-xl);
  position: relative;
  color: var(--gray-700);
  line-height: 1.7;
}

.custom-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: var(--space-sm);
  width: 24px;
  height: 24px;
  background-color: var(--bg-secondary);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
}

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

.accordion {
  margin: var(--space-lg) 0;
}

.accordion-item {
  background: var(--bg-primary);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  overflow: hidden;
}

.accordion-header {
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  color: var(--gray-800);
  transition: all var(--transition-fast);
  user-select: none;
}

.accordion-header:hover {
  background-color: var(--gray-50);
}

.accordion-icon {
  font-size: 1.25rem;
  transition: transform var(--transition-base);
  color: var(--primary);
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

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

.accordion-item.active .accordion-content {
  max-height: 1000px;
}

.accordion-body {
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--gray-600);
  line-height: 1.7;
}

/* ================================================================
   RODAPÉ
   ================================================================ */

.site-footer {
  background-color: var(--gray-900);
  color: var(--gray-400);
  padding: var(--space-2xl) 0 var(--space-md);
}

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

.footer-section h4 {
  color: white;
  margin-bottom: var(--space-md);
  font-size: 1.125rem;
}

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

.footer-section li {
  margin-bottom: var(--space-sm);
}

.footer-section a {
  color: var(--gray-400);
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid var(--gray-800);
  padding-top: var(--space-md);
  text-align: center;
  font-size: 0.8125rem;
  opacity: 0.5;
  line-height: 1.5;
}

/* ================================================================
   UTILIDADES
   ================================================================ */

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

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

.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); }

.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }

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

@media (max-width: 768px) {
  :root {
    font-size: 15px;
  }
  
  section {
    padding: var(--space-2xl) 0;
  }
  
  .main-nav {
    display: none;
  }
  
  .main-nav.active {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border-top: 1px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
  }
  
  .main-nav.active ul {
    flex-direction: column;
    padding: var(--space-md);
    gap: 0;
  }
  
  .main-nav.active li {
    border-bottom: 1px solid var(--gray-200);
  }
  
  .main-nav.active a {
    display: block;
    padding: var(--space-md);
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    font-size: 14px;
  }
  
  .container {
    padding: 0 var(--space-sm);
  }
}