/* ==========================================================================
   NYL PROGRAMMING LANGUAGE - DESIGN SYSTEM CORE
   ========================================================================== */

:root {
  /* Paleta Base - Modo Escuro Técnico (Padrão) */
  --bg-body: #0a0e17;
  --bg-surface: #111726;
  --bg-surface-elevated: #161f33;
  --bg-card: #121824;
  --bg-code: #0b0f19;
  --bg-code-header: #151d2e;
  
  --border-subtle: #1e293b;
  --border-focus: #38bdf8;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-primary: #38bdf8;
  --accent-hover: #7dd3fc;
  --accent-secondary: #818cf8;
  --accent-glow: rgba(56, 189, 248, 0.15);
  
  --status-experimental-bg: rgba(245, 158, 11, 0.12);
  --status-experimental-border: #f59e0b;
  --status-experimental-text: #fbbf24;
  
  --status-success-bg: rgba(16, 185, 129, 0.12);
  --status-success-text: #34d399;

  /* Tipografia */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Estrutura */
  --max-width: 1200px;
  --header-height: 64px;
  --sidebar-width: 290px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition: all 0.2s ease-in-out;
}

[data-theme="light"] {
  --bg-body: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-card: #ffffff;
  --bg-code: #f1f5f9;
  --bg-code-header: #e2e8f0;
  
  --border-subtle: #e2e8f0;
  --border-focus: #0284c7;
  
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  
  --accent-primary: #0284c7;
  --accent-hover: #0369a1;
  --accent-secondary: #6366f1;
  --accent-glow: rgba(2, 132, 199, 0.12);
  
  --status-experimental-bg: rgba(217, 119, 6, 0.1);
  --status-experimental-border: #d97706;
  --status-experimental-text: #b45309;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

code, pre {
  font-family: var(--font-mono);
}

pre {
  scrollbar-width: thin;
  scrollbar-color: var(--border-subtle) transparent;
}

pre::-webkit-scrollbar {
  height: 6px;
  width: 6px;
}

pre::-webkit-scrollbar-track {
  background: transparent;
}

pre::-webkit-scrollbar-thumb {
  background-color: var(--border-subtle);
  border-radius: 4px;
}

pre::-webkit-scrollbar-thumb:hover {
  background-color: var(--text-muted);
}

/* --- Header / Navbar --- */
.site-header {
  position: sticky;
  top: 0;
  height: var(--header-height);
  background-color: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  transition: var(--transition);
}

[data-theme="light"] .site-header {
  background-color: rgba(248, 250, 252, 0.88);
}

.header-container {
  max-width: var(--max-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-primary);
  text-decoration: none;
}

.header-brand svg {
  height: 32px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 0.925rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  padding: 0.35rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--accent-primary);
  border-radius: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Alternador de Idioma */
.lang-switcher {
  display: flex;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.lang-btn.active {
  background: var(--bg-surface-elevated);
  color: var(--accent-primary);
}

.lang-btn:hover:not(.active) {
  color: var(--text-primary);
}

/* Botão de Tema */
.theme-toggle-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.theme-toggle-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

.theme-toggle-btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  pointer-events: none;
}

[data-theme="dark"] .theme-toggle-btn .sun-icon {
  display: block;
}
[data-theme="dark"] .theme-toggle-btn .moon-icon {
  display: none;
}

[data-theme="light"] .theme-toggle-btn .sun-icon {
  display: none;
}
[data-theme="light"] .theme-toggle-btn .moon-icon {
  display: block;
}

/* Botão Mobile */
.mobile-nav-toggle {
  display: none;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.mobile-nav-toggle:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

/* --- Botões e Componentes Comuns --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-size: 0.925rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: #0b0f17;
  border: 1px solid var(--accent-primary);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  color: #0b0f17;
  box-shadow: 0 0 20px var(--accent-glow);
}

[data-theme="light"] .btn-primary {
  color: #ffffff;
}

[data-theme="light"] .btn-primary:hover {
  color: #ffffff;
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background-color: var(--bg-surface-elevated);
  border-color: var(--text-muted);
}

[data-theme="light"] .btn-secondary {
  background-color: #ffffff;
  border-color: #cbd5e1;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .btn-secondary:hover {
  background-color: #f8fafc;
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-experimental {
  background-color: var(--status-experimental-bg);
  border: 1px solid var(--status-experimental-border);
  color: var(--status-experimental-text);
}

.badge-version {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--accent-primary);
  font-family: var(--font-mono);
}

/* Callout Box */
.callout {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--accent-primary);
  background-color: var(--bg-surface);
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.callout-experimental {
  border-left-color: var(--status-experimental-border);
  background-color: var(--status-experimental-bg);
  color: var(--text-primary);
}

.callout-experimental strong {
  color: var(--status-experimental-text);
}

/* --- Rodapé --- */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
  padding: 3rem 1.5rem 2rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
}

.footer-brand {
  max-width: 320px;
}

.footer-brand p {
  margin-top: 0.75rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 3.5rem;
}

.footer-col h4 {
  color: var(--text-primary);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.85rem;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-col a {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.825rem;
  color: var(--text-muted);
}

/* --- Responsividade Global --- */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    padding: 1.5rem;
    gap: 1.25rem;
    z-index: 1100;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.45);
  }

  [data-theme="light"] .nav-links.mobile-open {
    background-color: #ffffff;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
  }

  .mobile-nav-toggle {
    display: inline-flex;
  }
  
  .footer-links-grid {
    gap: 2rem;
  }
}

@media (max-width: 480px) {
  .header-container {
    padding: 0 0.75rem;
  }

  .header-actions {
    gap: 0.35rem;
  }

  .lang-btn {
    padding: 3px 6px;
    font-size: 0.7rem;
  }

  .header-brand svg {
    height: 26px;
  }
}

/* ==========================================================================
   SYNTAX HIGHLIGHTING (Dark & Light Theme)
   ========================================================================== */

/* Dark Theme (Padrão) */
.token-kw {
  color: #f472b6;
  font-weight: 600;
}

.token-fn {
  color: #60a5fa;
}

.token-type {
  color: #38bdf8;
}

.token-str {
  color: #a7f3d0;
}

.token-num {
  color: #fde047;
}

.token-bool {
  color: #c084fc;
}

.token-directive {
  color: #fb923c;
  font-weight: 600;
}

.token-comment {
  color: #64748b;
  font-style: italic;
}

.token-cmd {
  color: #38bdf8;
  font-weight: bold;
}

.token-flag {
  color: #f472b6;
}

/* Light Theme (Alto Contraste WCAG AA) */
[data-theme="light"] .token-kw {
  color: #a21caf;
  font-weight: 700;
}

[data-theme="light"] .token-fn {
  color: #1d4ed8;
  font-weight: 600;
}

[data-theme="light"] .token-type {
  color: #0369a1;
  font-weight: 600;
}

[data-theme="light"] .token-str {
  color: #15803d;
}

[data-theme="light"] .token-num {
  color: #b45309;
  font-weight: 600;
}

[data-theme="light"] .token-bool {
  color: #7e22ce;
  font-weight: 600;
}

[data-theme="light"] .token-directive {
  color: #c2410c;
  font-weight: 600;
}

[data-theme="light"] .token-comment {
  color: #64748b;
  font-style: italic;
}

[data-theme="light"] .token-cmd {
  color: #0284c7;
  font-weight: bold;
}

[data-theme="light"] .token-flag {
  color: #be185d;
  font-weight: 600;
}