/* ============================================
   ARBOR GESTÃO TECNOLÓGICA - DESIGN SYSTEM
   Soluções Tecnológicas com Raízes Profundas
   ============================================ */

:root {
  /* Brand Colors - Sistema ARBOR ERP */
  --brand-default: #000000;
  --brand-300: #333333;
  --brand-600: #1a1a1a;
  --moss: #666666;
  
  /* Accent Colors - Apenas Preto e Branco */
  --accent-default: #000000;
  --accent-hover: #1a1a1a;
  --frost: #000000;
  
  /* Gray Scale */
  --gray-50: #f8f9fa;
  --gray-100: #e5e5e5;
  --gray-200: #d1d1d1;
  --gray-300: #b3b3b3;
  --gray-400: #999999;
  --gray-500: #666666;
  --gray-600: #333333;
  --gray-700: #1a1a1a;
  --gray-800: #000000;
  --gray-900: #000000;
  --gray-950: #000000;
  --white: #ffffff;
  
  /* State Colors - Success */
  --state-success: #000000;
  --state-success-hover: #1a1a1a;
  --state-success-bg: #f8f9fa;
  --state-success-text: #000000;
  
  /* State Colors - Warning */
  --state-warn: #000000;
  --state-warn-hover: #1a1a1a;
  --state-warn-bg: #f8f9fa;
  --state-warn-text: #000000;
  
  /* State Colors - Error */
  --state-error: #000000;
  --state-error-hover: #1a1a1a;
  --state-error-bg: #f8f9fa;
  --state-error-text: #000000;
  
  /* State Colors - Info */
  --state-info: #000000;
  --state-info-hover: #1a1a1a;
  --state-info-bg: #f8f9fa;
  --state-info-text: #000000;
  
  /* Brand Shades */
  --brand-50: #f8f9fa;
  
  /* Accent Shades */
  --accent-50: #fef7ed;
  
  /* Frost Shades */
  --frost-50: #eff6ff;
  
  /* 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;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'Courier New', Courier, monospace;
  
  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --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);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-cta-glow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 200ms ease-in-out;
  --transition-slow: 300ms ease-in-out;
}

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

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--white);
  color: var(--gray-600);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a {
  color: var(--frost);
  text-decoration: none;
  transition: all var(--transition-base);
}

a:hover {
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--frost);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: all var(--transition-base);
}

button:focus-visible {
  outline: 2px solid var(--frost);
  outline-offset: 2px;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: 1rem;
  transition: all var(--transition-base);
}

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--frost);
  outline-offset: 0;
}

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

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container-narrow {
  max-width: 960px;
}

.container-wide {
  max-width: 1440px;
}

/* Background Utilities */
.bg-hero-radial {
  background: var(--white);
}

.bg-gray-950 { background-color: var(--brand-default); }
.bg-gray-900 { background-color: var(--brand-600); }
.bg-gray-800 { background-color: var(--brand-300); }
.bg-gray-700 { background-color: var(--gray-600); }
.bg-brand { background-color: var(--brand-default); }
.bg-brand-300 { background-color: var(--brand-300); }

/* Text Utilities */
.text-white { color: var(--gray-900); }
.text-gray-100 { color: var(--gray-800); }
.text-gray-200 { color: var(--gray-700); }
.text-gray-300 { color: var(--gray-600); }
.text-gray-400 { color: var(--gray-500); }
.text-brand { color: var(--brand-default); }
.text-brand-300 { color: var(--brand-300); }
.text-moss { color: var(--moss); }
.text-accent { color: var(--accent-default); }
.text-frost { color: var(--frost); }

/* Border Utilities */
.border-gray-700 { border-color: var(--gray-700); }
.border-gray-600 { border-color: var(--gray-600); }
.border-brand { border-color: var(--brand-default); }
.border-brand-300 { border-color: var(--brand-300); }

/* Display Utilities */
.flex { display: flex; }
.grid { display: grid; }
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

/* Flexbox Utilities */
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-4 { gap: var(--spacing-md); }
.gap-6 { gap: var(--spacing-lg); }
.gap-8 { gap: var(--spacing-xl); }

/* Spacing Utilities */
.m-0 { margin: 0; }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-4 { margin-top: var(--spacing-md); }
.mt-6 { margin-top: var(--spacing-lg); }
.mt-8 { margin-top: var(--spacing-xl); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-4 { margin-bottom: var(--spacing-md); }
.mb-6 { margin-bottom: var(--spacing-lg); }
.mb-8 { margin-bottom: var(--spacing-xl); }
.p-4 { padding: var(--spacing-md); }
.p-6 { padding: var(--spacing-lg); }
.p-8 { padding: var(--spacing-xl); }
.py-2 { padding-top: var(--spacing-sm); padding-bottom: var(--spacing-sm); }
.py-4 { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-8 { padding-top: var(--spacing-xl); padding-bottom: var(--spacing-xl); }
.py-12 { padding-top: var(--spacing-3xl); padding-bottom: var(--spacing-3xl); }
.py-16 { padding-top: var(--spacing-4xl); padding-bottom: var(--spacing-4xl); }
.px-4 { padding-left: var(--spacing-md); padding-right: var(--spacing-md); }
.px-6 { padding-left: var(--spacing-lg); padding-right: var(--spacing-lg); }

/* Typography Utilities */
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }
.text-5xl { font-size: 3rem; }
.text-6xl { font-size: 3.75rem; }

.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

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

/* Border Radius */
.rounded { border-radius: var(--radius-md); }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Shadow Utilities */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-cta-glow { box-shadow: var(--shadow-cta-glow); }

/* Width Utilities */
.w-full { width: 100%; }
.max-w-full { max-width: 100%; }

/* ============================================
   COMPONENT CLASSES
   ============================================ */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.875rem 1.5rem;
  font-weight: 600;
  border-radius: 12px;
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  font-size: 1rem;
  line-height: 1.5;
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--frost);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--brand-default);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: var(--brand-600);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
}

.btn-secondary {
  background-color: transparent;
  color: var(--brand-default);
  border-color: var(--gray-100);
}

.btn-secondary:hover {
  background-color: var(--brand-default);
  border-color: var(--brand-default);
  color: var(--white);
  text-decoration: none;
}

.btn-outline {
  background-color: var(--white);
  color: var(--brand-default);
  border-color: var(--brand-default);
}

.btn-outline:hover {
  background-color: var(--brand-default);
  border-color: var(--brand-default);
  color: var(--white);
  text-decoration: none;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* Cards */
.card {
  background-color: var(--brand-default);
  border: 2px solid var(--brand-default);
  border-radius: 12px;
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
  color: var(--white);
}

.card:hover {
  border-color: var(--brand-600);
  background-color: var(--brand-600);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-header {
  margin-bottom: var(--spacing-lg);
}

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--spacing-sm);
}

.card-description {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
}

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

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--gray-600);
  font-size: 0.875rem;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.875rem 1rem;
  background-color: var(--white);
  border: 2px solid var(--gray-100);
  border-radius: 10px;
  color: var(--gray-600);
  font-size: 0.95rem;
  transition: var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--brand-default);
  background-color: var(--white);
  outline: none;
}

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

.form-error {
  color: var(--state-error);
  font-size: 0.875rem;
  margin-top: var(--spacing-sm);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-success {
  background-color: var(--state-success-bg);
  color: var(--state-success-text);
}

.badge-warning {
  background-color: var(--state-warn-bg);
  color: var(--state-warn-text);
}

.badge-error {
  background-color: var(--state-error-bg);
  color: var(--state-error-text);
}

.badge-info {
  background-color: var(--state-info-bg);
  color: var(--state-info-text);
}

/* Progress Bar */
.progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--gray-700);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--accent-default);
  transition: width var(--transition-slow);
}

/* Alert */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
  border-left: 4px solid;
}

.alert-success {
  background-color: var(--state-success-bg);
  color: var(--state-success-text);
  border-color: var(--state-success);
}

.alert-warning {
  background-color: var(--state-warn-bg);
  color: var(--state-warn-text);
  border-color: var(--state-warn);
}

.alert-error {
  background-color: var(--state-error-bg);
  color: var(--state-error-text);
  border-color: var(--state-error);
}

.alert-info {
  background-color: var(--state-info-bg);
  color: var(--state-info-text);
  border-color: var(--state-info);
}

/* Loading Spinner */
.spinner {
  border: 3px solid var(--gray-700);
  border-top-color: var(--accent-default);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

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

/* Mobile First - Base styles for mobile */
@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  /* Typography adjustments for small screens */
  .text-6xl { font-size: 2rem; }
  .text-5xl { font-size: 1.75rem; }
  .text-4xl { font-size: 1.5rem; }
  .text-3xl { font-size: 1.375rem; }
  .text-2xl { font-size: 1.25rem; }
  .text-xl { font-size: 1.125rem; }
  
  /* Button adjustments */
  .btn {
    padding: 0.75rem 1.25rem;
    font-size: 0.9375rem;
  }
  
  .btn-lg {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
  }
  
  .btn-sm {
    padding: 0.5rem 0.875rem;
    font-size: 0.8125rem;
  }
  
  /* Spacing adjustments */
  .py-16 { padding-top: var(--spacing-2xl); padding-bottom: var(--spacing-2xl); }
  .py-12 { padding-top: var(--spacing-xl); padding-bottom: var(--spacing-xl); }
  
  /* Card adjustments */
  .card {
    padding: var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .text-6xl { font-size: 2.5rem; }
  .text-5xl { font-size: 2rem; }
  .text-4xl { font-size: 1.75rem; }
  .text-3xl { font-size: 1.5rem; }
  
  .hidden-mobile {
    display: none !important;
  }
  
  /* Make buttons full width on mobile when in flex containers */
  .flex-col .btn,
  .hero-cta .btn,
  .cta-buttons .btn {
    width: 100%;
  }
  
  /* Adjust grid layouts for mobile */
  .services-grid,
  .package-grid,
  .testimonial-grid {
    grid-template-columns: 1fr;
  }
  
  /* Stack flex items on mobile */
  .flex-wrap {
    flex-direction: column;
  }
}

@media (min-width: 769px) {
  .hidden-desktop {
    display: none !important;
  }
}

/* Tablet adjustments */
@media (min-width: 481px) and (max-width: 768px) {
  .services-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

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

.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent-default);
  color: var(--gray-950);
  padding: 8px;
  text-decoration: none;
  z-index: 100;
}

.skip-to-content:focus {
  top: 0;
}

/* Focus visible for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--frost);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================
   MOBILE TOUCH IMPROVEMENTS
   ============================================ */

/* Improve touch targets on mobile */
@media (max-width: 768px) {
  /* Ensure minimum touch target size of 44x44px */
  a, button, input, select, textarea {
    min-height: 44px;
    min-width: 44px;
  }
  
  /* Prevent text size adjustment on orientation change */
  html {
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    text-size-adjust: 100%;
  }
  
  /* Improve tap highlight */
  a, button {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
  }
  
  /* Prevent horizontal scroll */
  body {
    overflow-x: hidden;
    width: 100%;
  }
  
  /* Improve form inputs on mobile */
  input[type="text"],
  input[type="email"],
  input[type="tel"],
  input[type="password"],
  textarea,
  select {
    font-size: 16px; /* Prevents zoom on iOS */
  }
  
  /* Better spacing for touch */
  .btn + .btn {
    margin-top: var(--spacing-sm);
  }
}

/* Landscape mobile adjustments */
@media (max-width: 768px) and (orientation: landscape) {
  .hero {
    min-height: auto;
    padding: var(--spacing-2xl) 0;
  }
}