/* ==========================================================================
   Kit Fácil Brasil - Política de Privacidade
   Design System & WCAG 2.1/2.2 AA/AAA Accessibility Stylesheet
   ========================================================================== */

:root {
  /* Color Palette - Light Theme (WCAG AAA Contrast >= 7:1 for text) */
  --color-primary: #1e40af;
  --color-primary-hover: #1d4ed8;
  --color-primary-focus: #172554;
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #0f172a;
  --color-text-muted: #334155;
  --color-border: #cbd5e1;
  --color-border-subtle: #e2e8f0;
  --color-badge-bg: #e0e7ff;
  --color-badge-text: #1e1b4b;
  --color-focus-ring: #2563eb;
  --color-card-shadow: rgba(15, 23, 42, 0.08);

  /* Typography & Sizing */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-base: 1.0625rem; /* 17px for enhanced readability */
  --line-height-base: 1.65;
  --line-height-heading: 1.25;
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.75rem;
  --border-radius-lg: 1rem;
  --max-content-width: 52rem; /* ~832px */
}

/* Dark Theme Support */
@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #60a5fa;
    --color-primary-hover: #93c5fd;
    --color-primary-focus: #bfdbfe;
    --color-bg: #0b0f19;
    --color-surface: #131b2e;
    --color-text: #f8fafc;
    --color-text-muted: #cbd5e1;
    --color-border: #334155;
    --color-border-subtle: #1e293b;
    --color-badge-bg: #1e293b;
    --color-badge-text: #93c5fd;
    --color-focus-ring: #60a5fa;
    --color-card-shadow: rgba(0, 0, 0, 0.4);
  }
}

/* High Contrast Mode (WCAG Enhanced) */
@media (prefers-contrast: more) {
  :root {
    --color-primary: #0000ee;
    --color-text: #000000;
    --color-text-muted: #111111;
    --color-border: #000000;
    --color-surface: #ffffff;
    --color-focus-ring: #000000;
  }
}

/* Base Reset & Box Sizing */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  padding: 1.5rem 1rem;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--text-color, var(--color-text));
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Skip to Main Content Link (WCAG 2.4.1 Bypass Blocks) */
.skip-link {
  position: absolute;
  top: -999px;
  left: 1rem;
  background: var(--color-primary);
  color: #ffffff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--border-radius-sm);
  font-weight: 700;
  text-decoration: none;
  z-index: 1000;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
}

.skip-link:focus {
  top: 1rem;
  outline: 3px solid #ffffff;
  outline-offset: 2px;
}

/* Main Container Layout */
.app-container {
  width: 100%;
  max-width: var(--max-content-width);
  background-color: var(--color-surface);
  padding: 2.5rem 2rem;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: 0 10px 15px -3px var(--color-card-shadow), 0 4px 6px -4px var(--color-card-shadow);
  margin: auto 0;
}

@media (max-width: 640px) {
  .app-container {
    padding: 1.75rem 1.25rem;
    border-radius: var(--border-radius-md);
  }
}

/* Header & Meta */
.header-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-badge-bg);
  color: var(--color-badge-text);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  margin-bottom: 1rem;
  border: 1px solid var(--color-border-subtle);
}

.header-title {
  color: var(--color-primary);
  font-size: 2rem;
  font-weight: 800;
  line-height: var(--line-height-heading);
  margin: 0 0 0.5rem 0;
}

.header-meta {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-border-subtle);
}

/* Headings (WCAG 1.3.1 Info and Relationships) */
h2 {
  color: var(--color-primary);
  font-size: 1.375rem;
  font-weight: 700;
  line-height: var(--line-height-heading);
  margin-top: 2rem;
  margin-bottom: 0.875rem;
  border-bottom: 1px solid var(--color-border-subtle);
  padding-bottom: 0.5rem;
}

h3 {
  color: var(--color-text);
  font-size: 1.125rem;
  font-weight: 600;
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}

/* Typography & Lists */
p {
  margin-top: 0;
  margin-bottom: 1.25rem;
  color: var(--color-text);
}

ul, ol {
  margin-top: 0;
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

li::marker {
  color: var(--color-primary);
}

/* Links & Focus States (WCAG 2.4.7 Focus Visible & 1.4.1 Use of Color) */
a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
  transition: color 0.15s ease-in-out;
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-focus-ring);
  outline-offset: 3px;
  border-radius: var(--border-radius-sm);
}

/* Highlight & Callout Box */
.callout-box {
  background-color: var(--color-badge-bg);
  border-left: 4px solid var(--color-primary);
  padding: 1.25rem;
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
  margin: 1.5rem 0;
}

.callout-box p:last-child {
  margin-bottom: 0;
}

/* Contact Section Card */
.contact-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 1.5rem;
  border-radius: var(--border-radius-md);
  margin-top: 2.5rem;
}

.contact-card h2 {
  margin-top: 0;
  border-bottom: none;
  padding-bottom: 0;
}

/* Footer & Compliance Note */
.page-footer {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border-subtle);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-align: center;
}