/* ========================================
   AGILLY INTELIGÊNCIA CONTÁBIL
   Design System & Paleta Exclusiva
   ======================================== */

:root {
  /* Paleta de cores exclusiva */
  --primary-dark: #1a4d7a;
  --primary-medium: #2d6a9f;
  --primary-light: #4a8bc2;
  --accent-blue: #5a9fd4;
  --accent-teal: #3d8b8b;
  
  --neutral-100: #f8f9fb;
  --neutral-200: #e8eaef;
  --neutral-300: #d1d5dd;
  --neutral-400: #9ba3af;
  --neutral-600: #5a7a94;
  --neutral-800: #2c3e50;
  --neutral-900: #1a252f;
  
  --success: #2d8659;
  --warning: #d97706;
  --danger: #dc2626;
  
  /* Typography */
  --font-system: system-ui, -apple-system, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
  --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(26, 77, 122, 0.08);
  --shadow-md: 0 4px 12px rgba(26, 77, 122, 0.12);
  --shadow-lg: 0 10px 30px rgba(26, 77, 122, 0.15);
  
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-system);
  line-height: 1.7;
  color: var(--neutral-800);
  background-color: var(--neutral-100);
}

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

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

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

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

/* ========================================
   TYPOGRAPHY
   ======================================== */

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

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, 2rem);
}

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

h5 {
  font-size: 1.125rem;
}

p {
  margin-bottom: var(--space-md);
  color: var(--neutral-600);
}

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

.small-text {
  font-size: 0.875rem;
  color: var(--neutral-400);
}

/* ========================================
   LAYOUT COMPONENTS
   ======================================== */

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

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

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

.section-sm {
  padding: var(--space-xl) 0;
}

.section-lg {
  padding: calc(var(--space-2xl) * 1.5) 0;
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(248, 249, 251, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--neutral-200);
  transition: all var(--transition-base);
}

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

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

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

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

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

.nav-link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--neutral-600);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-medium);
  transition: width var(--transition-base);
}

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--neutral-800);
  transition: all var(--transition-base);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--neutral-100) 0%, #e8f0f7 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 60%;
  height: 100%;
  background-image: url('../assets/hero.svg');
  background-size: cover;
  background-position: center;
  opacity: 0.6;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 650px;
}

.hero-badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background: var(--primary-light);
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 50px;
  margin-bottom: var(--space-md);
  letter-spacing: 0.5px;
}

.hero h1 {
  margin-bottom: var(--space-md);
  color: var(--neutral-900);
}

.hero .lead {
  margin-bottom: var(--space-lg);
  max-width: 580px;
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.875rem 1.75rem;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
  text-align: center;
}

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

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

.btn-secondary {
  background: white;
  color: var(--primary-medium);
  border: 2px solid var(--primary-medium);
}

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

.btn-outline {
  background: transparent;
  color: var(--neutral-600);
  border: 2px solid var(--neutral-300);
}

.btn-outline:hover {
  background: var(--neutral-900);
  color: white;
  border-color: var(--neutral-900);
}

/* ========================================
   CARDS & BOXES
   ======================================== */

.card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid var(--neutral-200);
}

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

.card-icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-medium) 100%);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  color: white;
  font-size: 1.5rem;
  font-weight: 700;
}

.card h3 {
  margin-bottom: var(--space-sm);
  color: var(--neutral-900);
}

.card p {
  color: var(--neutral-600);
  line-height: 1.7;
}

/* ========================================
   INFO BOXES
   ======================================== */

.info-box {
  background: linear-gradient(135deg, var(--neutral-100) 0%, white 100%);
  border-left: 4px solid var(--primary-medium);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
}

.info-box.warning {
  border-left-color: var(--warning);
  background: linear-gradient(135deg, #fef3c7 0%, white 100%);
}

.info-box.success {
  border-left-color: var(--success);
  background: linear-gradient(135deg, #d1fae5 0%, white 100%);
}

.info-box h4 {
  color: var(--neutral-900);
  margin-bottom: var(--space-sm);
}

/* ========================================
   GRIDS
   ======================================== */

.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));
}

/* ========================================
   TABLES
   ======================================== */

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

table {
  width: 100%;
  border-collapse: collapse;
  background: white;
}

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

th {
  padding: var(--space-md);
  text-align: left;
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

tbody tr:hover {
  background: var(--neutral-100);
}

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

.faq-item {
  background: white;
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--neutral-900);
  background: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition-fast);
}

.faq-question:hover {
  background: var(--neutral-100);
}

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

.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) var(--space-lg);
  color: var(--neutral-600);
  line-height: 1.8;
}

/* ========================================
   FORMS
   ======================================== */

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

.form-label {
  display: block;
  font-weight: 600;
  color: var(--neutral-800);
  margin-bottom: var(--space-xs);
  font-size: 0.95rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.875rem var(--space-md);
  border: 2px solid var(--neutral-300);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
  color: var(--neutral-800);
  background: white;
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-medium);
  box-shadow: 0 0 0 3px rgba(45, 106, 159, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 150px;
}

.form-error {
  color: var(--danger);
  font-size: 0.875rem;
  margin-top: var(--space-xs);
}

.form-success {
  background: var(--success);
  color: white;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  text-align: center;
  font-weight: 600;
  margin-top: var(--space-md);
}

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

.footer {
  background: var(--neutral-900);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-xl) 0 var(--space-md);
}

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

.footer-section h4 {
  color: white;
  margin-bottom: var(--space-md);
  font-size: 1.1rem;
}

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

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

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-md);
  font-size: 0.75rem;
  line-height: 1.6;
  opacity: 0.5;
  text-align: center;
}

.footer-bottom p {
  margin-bottom: var(--space-xs);
  color: rgba(255, 255, 255, 0.7);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.text-center { text-align: center; }
.text-right { text-align: right; }
.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-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }

.bg-white { background: white; }
.bg-light { background: var(--neutral-100); }
.bg-primary { background: var(--primary-medium); color: white; }
.bg-dark { background: var(--neutral-900); color: white; }

.color-primary { color: var(--primary-medium); }
.color-dark { color: var(--neutral-900); }

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
  :root {
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
  }
  
  .nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background: rgba(248, 249, 251, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--space-lg);
    gap: var(--space-md);
    transition: left var(--transition-base);
    border-top: 1px solid var(--neutral-200);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }
  
  .hero {
    min-height: 70vh;
  }
  
  .hero::before {
    width: 100%;
    opacity: 0.3;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .table-wrapper {
    font-size: 0.875rem;
  }
  
  th, td {
    padding: var(--space-sm);
  }
}

@media (max-width: 480px) {
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .hero-content {
    text-align: center;
  }
}