/* ==========================================================================
   BaixAqui.digital — global.css
   Reset, variáveis, tipografia, layout base, header, footer, componentes
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* --------------------------------------------------------------------------
   Variáveis / Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Primárias */
  --primary: #0066FF;
  --primary-dark: #0050CC;
  --primary-light: #E6F0FF;

  /* Accent */
  --accent: #00D4AA;
  --accent-dark: #00B894;
  --accent-light: #E6FBF5;

  /* Neutros (light) */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F7F8FA;
  --bg-tertiary: #EBEDF0;
  --text-primary: #1A1D23;
  --text-secondary: #5A6270;
  --text-tertiary: #8E95A2;
  --border: #DFE1E6;

  /* Status */
  --success: #00C48C;
  --warning: #FFB020;
  --danger: #FF4757;

  /* Elevação */
  --shadow-sm: 0 1px 2px rgba(26, 29, 35, 0.06), 0 1px 3px rgba(26, 29, 35, 0.08);
  --shadow-md: 0 4px 12px rgba(26, 29, 35, 0.08);
  --shadow-lg: 0 12px 32px rgba(26, 29, 35, 0.12);

  /* Raio */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;

  /* Transições */
  --transition: 160ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Header */
  --header-height: 64px;
}

/* Dark mode via data-theme="dark" (definido por theme.js) */
:root[data-theme="dark"] {
  --bg-primary: #0D1117;
  --bg-secondary: #161B22;
  --bg-tertiary: #21262D;
  --text-primary: #E6EDF3;
  --text-secondary: #8B949E;
  --text-tertiary: #6E7681;
  --border: #30363D;
  --primary-light: #10243E;
  --accent-light: #0C2B26;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
}

/* Respeitar preferência do sistema quando o usuário não escolheu manualmente */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-primary: #0D1117;
    --bg-secondary: #161B22;
    --bg-tertiary: #21262D;
    --text-primary: #E6EDF3;
    --text-secondary: #8B949E;
    --text-tertiary: #6E7681;
    --border: #30363D;
    --primary-light: #10243E;
    --accent-light: #0C2B26;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
  }
}

/* --------------------------------------------------------------------------
   Reset
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--transition), color var(--transition);
}

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

a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }

ul, ol { list-style-position: inside; }

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

/* Acessibilidade: foco visível */
:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  padding: 12px 20px;
  background: var(--primary);
  color: #fff;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; color: #fff; }

/* --------------------------------------------------------------------------
   Tipografia
   -------------------------------------------------------------------------- */
h1 { font-size: 2.25rem; font-weight: 800; line-height: 1.2; letter-spacing: -0.02em; }
h2 { font-size: 1.75rem; font-weight: 700; line-height: 1.3; letter-spacing: -0.01em; }
h3 { font-size: 1.25rem; font-weight: 600; line-height: 1.4; }
h4 { font-size: 1.05rem; font-weight: 600; line-height: 1.4; }

.version-badge, .tag, code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
}

@media (max-width: 768px) {
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.4rem; }
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 48px 0; }
.section-title { margin-bottom: 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .article-layout { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }
}

/* --------------------------------------------------------------------------
   Header / Navbar
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: color-mix(in srgb, var(--bg-primary) 82%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-primary);
  white-space: nowrap;
  letter-spacing: -0.02em;
}
.logo:hover { color: var(--text-primary); }
.logo-mark {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border-radius: 9px;
  font-weight: 800;
}
.logo b { color: var(--primary); }

/* Busca */
.header-search {
  flex: 1;
  max-width: 460px;
  margin: 0 auto;
  position: relative;
}
.header-search input {
  width: 100%;
  height: 40px;
  padding: 0 16px 0 42px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.header-search input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.header-search .search-icon {
  position: absolute;
  left: 14px; top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  pointer-events: none;
}
.search-results {
  position: absolute;
  top: calc(100% + 8px);
  left: 0; right: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  max-height: 360px;
  overflow-y: auto;
  display: none;
}
.search-results.open { display: block; }
.search-results a {
  display: block;
  padding: 10px 16px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.search-results a:last-child { border-bottom: none; }
.search-results a:hover { background: var(--bg-secondary); }
.search-results .empty { padding: 16px; color: var(--text-tertiary); font-size: 0.9rem; }

.header-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }

.icon-btn {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: background var(--transition), color var(--transition);
}
.icon-btn:hover { background: var(--bg-tertiary); color: var(--text-primary); }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
}
.nav-links a:hover { background: var(--bg-secondary); color: var(--text-primary); }

.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
}

/* Hamburger (mobile) */
.hamburger { display: none; }

.mobile-menu {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(320px, 85vw);
  background: var(--bg-primary);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  transform: translateX(100%);
  transition: transform 240ms cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 200;
  padding: 24px;
  overflow-y: auto;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu h4 { margin: 20px 0 8px; color: var(--text-tertiary); text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.05em; }
.mobile-menu a { display: block; padding: 8px 0; color: var(--text-primary); font-weight: 500; }
.menu-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 150;
  opacity: 0; visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}
.menu-overlay.open { opacity: 1; visibility: visible; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .hamburger { display: grid; }
}
@media (max-width: 560px) {
  .header-search { display: none; }
}

/* --------------------------------------------------------------------------
   Botões
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  min-height: 44px;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-accent { background: var(--accent); color: #06231D; }
.btn-accent:hover { background: var(--accent-dark); color: #06231D; }
.btn-ghost { background: var(--bg-secondary); color: var(--text-primary); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.btn-block { width: 100%; }
.btn-lg { padding: 16px 24px; font-size: 1.05rem; }

/* --------------------------------------------------------------------------
   Badges
   -------------------------------------------------------------------------- */
.category-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--primary-light);
  color: var(--primary);
}
.version-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Card de Artigo
   -------------------------------------------------------------------------- */
.article-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.article-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
}
.article-card .thumb {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
  display: grid;
  place-items: center;
  color: var(--text-tertiary);
}
.article-card .thumb svg, .article-card .thumb img { width: 56px; height: 56px; }
.article-card .card-body { padding: 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.article-card h3 { font-size: 1.1rem; }
.article-card h3 a { color: var(--text-primary); }
.article-card h3 a:hover { color: var(--primary); }
.article-card .excerpt {
  color: var(--text-secondary);
  font-size: 0.9rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card .card-meta {
  margin-top: auto;
  display: flex;
  gap: 12px;
  color: var(--text-tertiary);
  font-size: 0.8rem;
}

/* --------------------------------------------------------------------------
   Breadcrumb
   -------------------------------------------------------------------------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-bottom: 16px;
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--text-tertiary); }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  margin-top: 64px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 32px;
}
.footer-col h4 { margin-bottom: 16px; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-tertiary); }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: var(--text-secondary); font-size: 0.92rem; }
.footer-col a:hover { color: var(--primary); }
.footer-brand p { color: var(--text-secondary); font-size: 0.92rem; margin-top: 12px; max-width: 320px; }
.footer-bottom {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  color: var(--text-tertiary);
  font-size: 0.85rem;
}
.footer-disclaimer { max-width: 640px; }

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* --------------------------------------------------------------------------
   Utilitários
   -------------------------------------------------------------------------- */
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.text-muted { color: var(--text-secondary); }
.mt-0 { margin-top: 0; }
img.lazy { opacity: 0; transition: opacity 300ms; }
img.lazy.loaded { opacity: 1; }