/* ============================================================
   Blog Intellaris | Design System
   Fraunces (heading) + Inter (body)
   Mobile-first, WCAG AA, CSS Custom Properties
   Modern tech-forward aesthetic
   ============================================================ */

@layer reset, tokens, base, layout, components, utilities, print;

/* ============================================================
   CSS @property — permite animar custom properties
   ============================================================ */
@property --gradient-angle {
  syntax: '<angle>';
  initial-value: 135deg;
  inherits: false;
}

@property --glow-opacity {
  syntax: '<number>';
  initial-value: 0;
  inherits: false;
}

/* ============================================================
   KEYFRAMES (escopo global — acessivel por todos os layers)
   ============================================================ */
@keyframes ebook-shimmer-sweep {
  0% { transform: translateX(-100%) skewX(-15deg); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateX(300%) skewX(-15deg); opacity: 0; }
}

@keyframes ebook-border-pulse {
  0%, 100% {
    border-color: rgba(59, 130, 246, 0.25);
    box-shadow: 0 4px 24px rgba(30, 58, 138, 0.3), 0 0 0 rgba(59, 130, 246, 0);
  }
  50% {
    border-color: rgba(96, 165, 250, 0.7);
    box-shadow: 0 4px 40px rgba(30, 58, 138, 0.6), 0 0 30px rgba(59, 130, 246, 0.25), 0 0 60px rgba(59, 130, 246, 0.1);
  }
}

/* ============================================================
   LAYER: RESET
   ============================================================ */
@layer reset {
  *,
  *::before,
  *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

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

  body {
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

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

  input, button, textarea, select {
    font: inherit;
    color: inherit;
  }

  button {
    cursor: pointer;
    border: none;
    background: none;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  ul, ol {
    list-style: none;
  }

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

  h1, h2, h3, h4, h5, h6 {
    overflow-wrap: break-word;
    text-wrap: balance;
  }

  p {
    overflow-wrap: break-word;
  }
}

/* ============================================================
   LAYER: TOKENS (CSS Custom Properties)
   ============================================================ */
@layer tokens {
  :root {
    /* ---- Cores: Navy / Blue ---- */
    --navy-950: #0F172A;
    --navy-900: #0F1D36;
    --navy-800: #1E3A8A;
    --navy-700: #1E40AF;
    --navy-600: #2563EB;
    --blue-500: #3B82F6;
    --blue-400: #60A5FA;
    --blue-300: #93C5FD;
    --blue-200: #BFDBFE;
    --blue-100: #DBEAFE;
    --blue-50: #EFF6FF;

    /* ---- Cores: Escala de cinza ---- */
    --gray-950: #030712;
    --gray-900: #111827;
    --gray-800: #1F2937;
    --gray-700: #374151;
    --gray-600: #4B5563;
    --gray-500: #6B7280;
    --gray-400: #9CA3AF;
    --gray-300: #D1D5DB;
    --gray-200: #E5E7EB;
    --gray-100: #F3F4F6;
    --gray-50: #F9FAFB;
    --white: #FFFFFF;

    /* ---- Cores: Categorias ---- */
    --cat-regulamentacao: #2563EB;
    --cat-tecnologia: #7C3AED;
    --cat-gestao: #059669;
    --cat-mercado: #D97706;
    --cat-intellaris: #DC2626;

    /* ---- Cores: Semanticas ---- */
    --success: #16A34A;
    --success-bg: #F0FDF4;
    --success-border: #BBF7D0;
    --warning: #D97706;
    --warning-bg: #FFFBEB;
    --warning-border: #FDE68A;
    --error: #DC2626;
    --error-bg: #FEF2F2;
    --error-border: #FECACA;
    --info: #2563EB;
    --info-bg: #EFF6FF;
    --info-border: #BFDBFE;

    /* ---- Gradientes ---- */
    --gradient-primary: linear-gradient(135deg, #1E3A8A, #3B82F6);
    --gradient-accent: linear-gradient(135deg, #3B82F6, #6366F1);
    --gradient-hero: linear-gradient(160deg, #0F172A 0%, #1a2744 40%, #1E3A8A 100%);
    --gradient-card-border: linear-gradient(135deg, #3B82F6 0%, #6366F1 50%, #3B82F6 100%);
    --gradient-cta: linear-gradient(135deg, #0F172A 0%, #1E3A8A 50%, #1a2744 100%);
    --gradient-text: linear-gradient(135deg, #FFFFFF 30%, #93C5FD 100%);

    /* ---- Sombras com cor (tech glow) ---- */
    --glow-blue-sm: 0 0 20px rgba(59, 130, 246, 0.1);
    --glow-blue: 0 0 30px rgba(59, 130, 246, 0.15);
    --glow-blue-lg: 0 0 60px rgba(59, 130, 246, 0.2);
    --glow-purple: 0 0 30px rgba(99, 102, 241, 0.15);

    /* ---- Tipografia ---- */
    --font-heading: 'Fraunces', Georgia, 'Times New Roman', serif;
    --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

    /* Escala tipografica fluida (clamp) */
    --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
    --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
    --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2rem);
    --text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);
    --text-4xl: clamp(2.25rem, 1.8rem + 2.25vw, 3.5rem);

    /* ---- Espacamento (multiplos de 4px) ---- */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* ---- Layout ---- */
    --content-width: 72ch;
    --max-width: 1280px;
    --sidebar-width: 280px;
    --header-height: 64px;

    /* ---- Sombras ---- */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.05);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.05);

    /* ---- Bordas ---- */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-2xl: 28px;
    --radius-full: 9999px;

    /* ---- Transicoes ---- */
    --transition-fast: 150ms ease;
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
  }
}

/* ============================================================
   LAYER: BASE
   ============================================================ */
@layer base {
  body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--gray-800);
    background-color: var(--gray-50);
    line-height: 1.7;
  }

  h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--navy-950);
    line-height: 1.2;
    letter-spacing: -0.025em;
    font-weight: 700;
  }

  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-3xl); }
  h3 { font-size: var(--text-2xl); }
  h4 { font-size: var(--text-xl); }

  a:not([class]) {
    color: var(--blue-500);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
    transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
  }

  a:not([class]):hover {
    color: var(--navy-700);
    text-decoration-color: var(--navy-700);
  }

  ::selection {
    background: var(--blue-200);
    color: var(--navy-950);
  }

  :focus-visible {
    outline: 2px solid var(--blue-500);
    outline-offset: 3px;
  }

  /* Keyframes */
  @keyframes spinner {
    to { transform: rotate(360deg); }
  }

  @keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
  }

  @keyframes pulse-glow {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.8; }
  }

  @keyframes float-subtle {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
  }
}

/* ============================================================
   LAYER: LAYOUT
   ============================================================ */
@layer layout {
  .container {
    width: 100%;
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--space-4);
  }

  @media (min-width: 768px) {
    .container {
      padding-inline: var(--space-8);
    }
  }

  @media (min-width: 1024px) {
    .container {
      padding-inline: var(--space-12);
    }
  }

  .post-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--space-4);
  }

  @media (min-width: 1024px) {
    .post-layout {
      grid-template-columns: 1fr var(--sidebar-width);
      padding-inline: var(--space-12);
    }
  }

  .section {
    padding-block: var(--space-16);
  }

  @media (min-width: 768px) {
    .section {
      padding-block: var(--space-20);
    }
  }

  @media (min-width: 1024px) {
    .section {
      padding-block: var(--space-24);
    }
  }
}

/* ============================================================
   LAYER: COMPONENTS
   ============================================================ */
@layer components {

  /* ---- Skip Link (Acessibilidade) ---- */
  .skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    z-index: 100;
    padding: var(--space-2) var(--space-4);
    background: var(--navy-950);
    color: var(--white);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: top var(--transition-fast);
  }

  .skip-link:focus {
    top: var(--space-4);
  }

  /* ---- Progress Bar (leitura) ---- */
  .progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--gradient-accent);
    z-index: 60;
    width: 0%;
    transition: width 100ms linear;
  }

  /* ---- Site Header ---- */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(24px) saturate(200%);
    -webkit-backdrop-filter: blur(24px) saturate(200%);
    border-bottom: 1px solid rgba(59, 130, 246, 0.08);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
    transition: border-color var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
  }

  .site-header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    border-bottom-color: var(--gray-200);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 20px rgba(59, 130, 246, 0.06);
  }

  /* Header transparent when over hero section */
  .site-header.header-over-hero {
    background: transparent;
    border-bottom-color: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .site-header.header-over-hero .header-nav a {
    color: rgba(255, 255, 255, 0.75);
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.05);
  }

  .site-header.header-over-hero .header-nav a:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  }

  .site-header.header-over-hero .header-search-btn,
  .site-header.header-over-hero .header-menu-btn {
    color: rgba(255, 255, 255, 0.75);
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.05);
  }

  .site-header.header-over-hero .header-search-btn:hover,
  .site-header.header-over-hero .header-menu-btn:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
  }

  .site-header.header-over-hero .header-logo img {
    filter: brightness(0) invert(1);
  }

  /* Header scrolled while hero is still visible */
  .site-header.header-hero-scrolled {
    background: rgba(15, 23, 42, 0.85);
    border-bottom-color: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
  }

  .site-header.header-hero-scrolled .header-nav a {
    color: rgba(255, 255, 255, 0.75);
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.05);
  }

  .site-header.header-hero-scrolled .header-nav a:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  }

  .site-header.header-hero-scrolled .header-search-btn,
  .site-header.header-hero-scrolled .header-menu-btn {
    color: rgba(255, 255, 255, 0.75);
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.05);
  }

  .site-header.header-hero-scrolled .header-search-btn:hover,
  .site-header.header-hero-scrolled .header-menu-btn:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
  }

  .site-header.header-hero-scrolled .header-logo img {
    filter: brightness(0) invert(1);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--space-4);
  }

  @media (min-width: 768px) {
    .header-inner {
      padding-inline: var(--space-8);
    }
  }

  .header-logo img {
    height: 28px;
    width: auto;
  }

  @media (min-width: 768px) {
    .header-logo img {
      height: 32px;
    }
  }

  .header-nav {
    display: none;
    align-items: center;
    gap: var(--space-1);
  }

  @media (min-width: 1024px) {
    .header-nav {
      display: flex;
    }
  }

  .header-nav a {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--gray-600);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    background: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-base), background var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    text-decoration: none;
    position: relative;
    letter-spacing: 0.01em;
  }

  .header-nav a:hover {
    color: var(--navy-950);
    background: var(--blue-50);
    border-color: rgba(59, 130, 246, 0.25);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.1);
  }

  .header-nav a:active {
    background: var(--blue-100);
    border-color: rgba(59, 130, 246, 0.35);
  }

  .header-nav a[aria-current="page"],
  .header-nav a.active {
    color: var(--navy-950);
    background: var(--blue-50);
    border-color: rgba(59, 130, 246, 0.2);
    font-weight: 600;
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
  }

  .header-search-btn,
  .header-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    background: rgba(255, 255, 255, 0.6);
    color: var(--gray-500);
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  }

  .header-search-btn:hover,
  .header-menu-btn:hover {
    background: var(--blue-50);
    border-color: rgba(59, 130, 246, 0.25);
    color: var(--navy-800);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.1);
  }

  @media (min-width: 1024px) {
    .header-menu-btn {
      display: none;
    }
  }

  /* ---- Mobile Menu ---- */
  .mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 51;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
  }

  .mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
  }

  .mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(340px, 85vw);
    background: var(--white);
    z-index: 52;
    padding: var(--space-6);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    overflow-y: auto;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.15);
  }

  .mobile-menu.active {
    transform: translateX(0);
  }

  .mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--gray-100);
  }

  .mobile-menu-close {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    color: var(--gray-600);
    transition: background var(--transition-fast);
  }

  .mobile-menu-close:hover {
    background: var(--gray-100);
  }

  .mobile-menu-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
  }

  .mobile-menu-nav a {
    display: block;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--gray-700);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast), color var(--transition-fast);
  }

  .mobile-menu-nav a:hover {
    background: var(--blue-50);
    color: var(--navy-800);
  }

  /* ---- Search Modal ---- */
  .search-modal {
    position: fixed;
    inset: 0;
    z-index: 55;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 12vh;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
  }

  .search-modal.active {
    opacity: 1;
    visibility: visible;
  }

  .search-box {
    width: min(580px, 92vw);
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl), var(--glow-blue);
    overflow: hidden;
    border: 1px solid var(--gray-200);
  }

  .search-input-wrap {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--gray-100);
  }

  .search-input-wrap svg {
    color: var(--gray-400);
    flex-shrink: 0;
  }

  .search-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: var(--text-lg);
    background: transparent;
  }

  .search-input::placeholder {
    color: var(--gray-400);
  }

  .search-results {
    max-height: 380px;
    overflow-y: auto;
    padding: var(--space-2);
  }

  .search-result-item {
    display: block;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
  }

  .search-result-item:hover {
    background: var(--blue-50);
  }

  .search-result-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--gray-900);
  }

  .search-result-excerpt {
    font-size: var(--text-xs);
    color: var(--gray-500);
    margin-top: var(--space-1);
  }

  .search-no-results {
    padding: var(--space-8) var(--space-4);
    text-align: center;
    color: var(--gray-500);
    font-size: var(--text-sm);
  }

  /* ---- Breadcrumb ---- */
  .breadcrumb {
    padding: var(--space-4) 0;
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--space-4);
  }

  @media (min-width: 768px) {
    .breadcrumb {
      padding-inline: var(--space-8);
    }
  }

  @media (min-width: 1024px) {
    .breadcrumb {
      padding-inline: var(--space-12);
    }
  }

  .breadcrumb-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
    font-size: var(--text-xs);
    color: var(--gray-500);
  }

  .breadcrumb-list a {
    color: var(--gray-500);
    transition: color var(--transition-fast);
  }

  .breadcrumb-list a:hover {
    color: var(--blue-500);
  }

  .breadcrumb-separator {
    color: var(--gray-300);
    user-select: none;
  }

  .breadcrumb-current {
    color: var(--gray-700);
    font-weight: 500;
  }

  /* ---- Post Hero ---- */
  .post-hero {
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--space-4);
    padding-bottom: var(--space-8);
  }

  @media (min-width: 768px) {
    .post-hero {
      padding-inline: var(--space-8);
      padding-bottom: var(--space-12);
    }
  }

  @media (min-width: 1024px) {
    .post-hero {
      padding-inline: var(--space-12);
    }
  }

  .post-hero-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-6);
    box-shadow: var(--shadow-lg);
  }

  @media (min-width: 768px) {
    .post-hero-image {
      border-radius: var(--radius-2xl);
    }
  }

  .post-hero h1 {
    margin-top: var(--space-4);
    margin-bottom: var(--space-4);
  }

  .post-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-4);
    font-size: var(--text-sm);
    color: var(--gray-500);
  }

  .post-meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
  }

  .post-meta-item svg {
    width: 16px;
    height: 16px;
  }

  .post-meta-author {
    display: flex;
    align-items: center;
    gap: var(--space-2);
  }

  .post-meta-author img {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    object-fit: cover;
  }

  /* ---- Category Tag ---- */
  .category-tag {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-radius: var(--radius-full);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
  }

  .category-tag:hover {
    opacity: 0.85;
    transform: translateY(-1px);
  }

  .category-tag[data-category="regulamentacao"] {
    background: rgba(37, 99, 235, 0.1);
    color: var(--cat-regulamentacao);
  }

  .category-tag[data-category="tecnologia"] {
    background: rgba(124, 58, 237, 0.1);
    color: var(--cat-tecnologia);
  }

  .category-tag[data-category="gestao"] {
    background: rgba(5, 150, 105, 0.1);
    color: var(--cat-gestao);
  }

  .category-tag[data-category="mercado"] {
    background: rgba(217, 119, 6, 0.1);
    color: var(--cat-mercado);
  }

  .category-tag[data-category="intellaris"] {
    background: rgba(220, 38, 38, 0.1);
    color: var(--cat-intellaris);
  }

  /* ---- Table of Contents (Sidebar) ---- */
  .toc {
    display: none;
  }

  @media (min-width: 1024px) {
    .toc {
      display: flex;
      flex-direction: column;
      position: sticky;
      top: calc(var(--header-height) + var(--space-8));
      max-height: calc(100vh - var(--header-height) - var(--space-16));
      order: 2;
    }

    .toc > nav {
      flex: 1;
      min-height: 0;
      overflow-y: auto;
    }
  }

  .toc-title {
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gray-400);
    margin-bottom: var(--space-4);
  }

  .toc-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    border-left: 2px solid var(--gray-200);
  }

  .toc-link {
    display: block;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    color: var(--gray-500);
    border-left: 2px solid transparent;
    margin-left: -2px;
    transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
    line-height: 1.4;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  }

  .toc-link:hover {
    color: var(--gray-700);
    background: var(--gray-50);
  }

  .toc-link.active {
    color: var(--blue-500);
    border-left-color: var(--blue-500);
    font-weight: 500;
    background: var(--blue-50);
  }

  /* TOC mobile (colapsavel) */
  .toc-mobile {
    margin-bottom: var(--space-6);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--white);
  }

  @media (min-width: 1024px) {
    .toc-mobile {
      display: none;
    }
  }

  .toc-mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--space-4);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--gray-700);
    background: var(--gray-50);
  }

  .toc-mobile-toggle svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-base);
  }

  .toc-mobile-toggle[aria-expanded="true"] svg {
    transform: rotate(180deg);
  }

  .toc-mobile-list {
    display: none;
    padding: var(--space-2) var(--space-4) var(--space-4);
  }

  .toc-mobile-list.expanded {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
  }

  .toc-mobile-list a {
    display: block;
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    color: var(--gray-600);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), color var(--transition-fast);
  }

  .toc-mobile-list a:hover {
    background: var(--blue-50);
    color: var(--blue-500);
  }

  /* ---- Post Body ---- */
  .post-body {
    max-width: var(--content-width);
    order: 1;
  }

  .post-body > * + * {
    margin-top: var(--space-5);
  }

  .post-body p {
    line-height: 1.8;
    color: var(--gray-700);
  }

  .post-body h2 {
    font-size: var(--text-2xl);
    margin-top: var(--space-12);
    margin-bottom: var(--space-4);
    padding-top: var(--space-4);
  }

  .post-body h3 {
    font-size: var(--text-xl);
    margin-top: var(--space-8);
    margin-bottom: var(--space-3);
  }

  .post-body strong {
    color: var(--gray-900);
    font-weight: 600;
  }

  .post-body ul,
  .post-body ol {
    padding-left: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
  }

  .post-body ul {
    list-style: disc;
  }

  .post-body ol {
    list-style: decimal;
  }

  .post-body li {
    line-height: 1.7;
    color: var(--gray-700);
  }

  .post-body li::marker {
    color: var(--blue-500);
  }

  .post-body blockquote {
    border-left: 4px solid var(--blue-500);
    padding: var(--space-4) var(--space-6);
    background: var(--blue-50);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    color: var(--gray-700);
  }

  .post-body img {
    border-radius: var(--radius-lg);
    margin-block: var(--space-6);
    box-shadow: var(--shadow-md);
  }

  .post-body figure {
    margin-block: var(--space-8);
  }

  .post-body figcaption {
    font-size: var(--text-sm);
    color: var(--gray-500);
    text-align: center;
    margin-top: var(--space-2);
  }

  .post-body a {
    color: var(--blue-500);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
    font-weight: 500;
    transition: color var(--transition-fast);
  }

  .post-body a:hover {
    color: var(--navy-700);
  }

  /* ---- Callouts ---- */
  .callout {
    padding: var(--space-5) var(--space-6);
    border-left: 4px solid;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    margin-block: var(--space-6);
    position: relative;
  }

  .callout-title {
    font-size: var(--text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: var(--space-2);
    display: flex;
    align-items: center;
    gap: var(--space-2);
  }

  .callout p {
    font-size: var(--text-sm);
    line-height: 1.7;
  }

  .callout.info {
    background: linear-gradient(135deg, var(--info-bg), rgba(219, 234, 254, 0.3));
    border-color: var(--info);
  }

  .callout.info .callout-title {
    color: var(--info);
  }

  .callout.warning {
    background: linear-gradient(135deg, var(--warning-bg), rgba(253, 230, 138, 0.2));
    border-color: var(--warning);
  }

  .callout.warning .callout-title {
    color: var(--warning);
  }

  .callout.success {
    background: linear-gradient(135deg, var(--success-bg), rgba(187, 247, 208, 0.2));
    border-color: var(--success);
  }

  .callout.success .callout-title {
    color: var(--success);
  }

  .callout.tip {
    background: linear-gradient(135deg, #F5F3FF, rgba(196, 181, 253, 0.15));
    border-color: var(--cat-tecnologia);
  }

  .callout.tip .callout-title {
    color: var(--cat-tecnologia);
  }

  /* ---- Tables (responsive) ---- */
  .table-responsive {
    overflow-x: auto;
    margin-block: var(--space-6);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    background: var(--white);
    box-shadow: var(--shadow-sm);
  }

  .table-responsive table {
    min-width: 480px;
  }

  .table-responsive th {
    background: var(--navy-950);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--white);
    text-align: left;
    padding: var(--space-3) var(--space-4);
  }

  .table-responsive th:first-child {
    border-radius: var(--radius-lg) 0 0 0;
  }

  .table-responsive th:last-child {
    border-radius: 0 var(--radius-lg) 0 0;
  }

  .table-responsive td {
    font-size: var(--text-sm);
    color: var(--gray-700);
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--gray-100);
  }

  .table-responsive tr:last-child td {
    border-bottom: none;
  }

  .table-responsive tbody tr {
    transition: background var(--transition-fast);
  }

  .table-responsive tbody tr:hover td {
    background: var(--blue-50);
  }

  /* ---- Post Card ---- */
  .post-card {
    display: flex;
    flex-direction: column;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--white);
    border: 1px solid var(--gray-200);
    transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
  }

  .post-card:hover {
    box-shadow: var(--shadow-lg), var(--glow-blue-sm);
    transform: translateY(-4px);
    border-color: var(--blue-200);
  }

  .post-card-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
  }

  .post-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
  }

  .post-card:hover .post-card-image img {
    transform: scale(1.06);
  }

  .post-card-content {
    padding: var(--space-5) var(--space-6);
    display: flex;
    flex-direction: column;
    flex: 1;
  }

  .post-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
    font-size: var(--text-xs);
    color: var(--gray-500);
  }

  .post-card h3 {
    font-size: var(--text-lg);
    line-height: 1.35;
    margin-bottom: var(--space-2);
  }

  .post-card h3 a {
    color: var(--navy-950);
    transition: color var(--transition-fast);
  }

  .post-card h3 a:hover {
    color: var(--blue-500);
  }

  .post-card-excerpt {
    font-size: var(--text-sm);
    color: var(--gray-600);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
  }

  .post-card-footer {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--gray-100);
    font-size: var(--text-xs);
    color: var(--gray-500);
  }

  /* ---- Featured Post Card ---- */
  .post-card-featured {
    display: grid;
    grid-template-columns: 1fr;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    background: var(--white);
    border: 1px solid var(--gray-200);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
  }

  .post-card-featured:hover {
    box-shadow: var(--shadow-xl), var(--glow-blue);
    border-color: var(--blue-200);
  }

  @media (min-width: 768px) {
    .post-card-featured {
      grid-template-columns: 1.1fr 1fr;
    }
  }

  .post-card-featured .post-card-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
  }

  .post-card-featured .post-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
  }

  .post-card-featured:hover .post-card-image img {
    transform: scale(1.04);
  }

  @media (min-width: 768px) {
    .post-card-featured .post-card-image {
      aspect-ratio: auto;
      height: 100%;
    }
  }

  .post-card-featured .post-card-content {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  @media (min-width: 768px) {
    .post-card-featured .post-card-content {
      padding: var(--space-10);
    }
  }

  .post-card-featured h2 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-3);
  }

  .post-card-featured h2 a {
    color: var(--navy-950);
    transition: color var(--transition-fast);
  }

  .post-card-featured h2 a:hover {
    color: var(--blue-500);
  }

  .post-card-featured .post-card-excerpt {
    -webkit-line-clamp: 4;
    margin-bottom: var(--space-2);
  }

  /* ---- Posts Grid ---- */
  .posts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  @media (min-width: 768px) {
    .posts-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (min-width: 1024px) {
    .posts-grid {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  /* ---- Related Posts ---- */
  .related-posts {
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--space-4);
    padding-block: var(--space-12);
  }

  @media (min-width: 768px) {
    .related-posts {
      padding-inline: var(--space-8);
    }
  }

  @media (min-width: 1024px) {
    .related-posts {
      padding-inline: var(--space-12);
    }
  }

  .related-posts-title {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-8);
  }

  /* ---- Author Card ---- */
  .author-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-6);
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    margin-top: var(--space-12);
    margin-inline: auto;
    max-width: var(--content-width);
    transition: box-shadow var(--transition-base);
  }

  .author-card:hover {
    box-shadow: var(--shadow-md);
  }

  @media (min-width: 768px) {
    .author-card {
      flex-direction: row;
      align-items: center;
      gap: var(--space-6);
    }
  }

  @media (min-width: 1024px) {
    .author-card {
      margin-left: var(--space-12);
      margin-right: calc(var(--sidebar-width) + var(--space-8) + var(--space-12));
    }
  }

  .author-card-photo {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-full);
    object-fit: cover;
    flex-shrink: 0;
    border: 2px solid var(--gray-100);
  }

  .author-card-name {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--navy-950);
  }

  .author-card-bio {
    font-size: var(--text-sm);
    color: var(--gray-600);
    line-height: 1.6;
    margin-top: var(--space-1);
  }

  .author-card-links {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-2);
  }

  .author-card-links a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
  }

  .author-card-links a:hover {
    color: var(--blue-500);
  }

  /* ---- Ebook CTA ---- */
  .ebook-cta {
    max-width: var(--content-width);
    margin-top: var(--space-12);
    padding: var(--space-8) var(--space-6);
    background: var(--gradient-cta);
    border-radius: var(--radius-2xl);
    color: var(--white);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(59, 130, 246, 0.2);
  }

  @media (min-width: 768px) {
    .ebook-cta {
      padding: var(--space-10) var(--space-8);
    }
  }

  .ebook-cta::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -15%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse-glow 4s ease-in-out infinite;
  }

  .ebook-cta::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse-glow 5s ease-in-out infinite 1s;
  }

  .ebook-cta-badge {
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--blue-300);
    margin-bottom: var(--space-3);
    position: relative;
  }

  .ebook-cta h3 {
    font-size: var(--text-xl);
    color: var(--white);
    margin-bottom: var(--space-2);
    position: relative;
  }

  .ebook-cta-desc {
    font-size: var(--text-sm);
    color: var(--blue-200);
    line-height: 1.7;
    margin-bottom: var(--space-6);
    max-width: 50ch;
    position: relative;
  }

  .ebook-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    position: relative;
    z-index: 1;
  }

  @media (min-width: 768px) {
    .ebook-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: var(--space-3);
    }
  }

  .ebook-form input {
    padding: var(--space-3) var(--space-4);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.08);
    color: var(--white);
    font-size: var(--text-sm);
    transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
    min-height: 44px;
  }

  .ebook-form input::placeholder {
    color: rgba(255, 255, 255, 0.4);
  }

  .ebook-form input:focus {
    outline: none;
    border-color: var(--blue-400);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
  }

  .ebook-form-submit {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    background: var(--gradient-accent);
    color: var(--white);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: box-shadow var(--transition-base), transform var(--transition-fast);
    min-height: 44px;
    position: relative;
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .ebook-form-submit {
      grid-column: 1 / -1;
    }
  }

  .ebook-form-submit:hover {
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
    transform: translateY(-1px);
  }

  .ebook-form-submit:active {
    transform: scale(0.98) translateY(0);
  }

  .ebook-form-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
  }

  .ebook-form-submit.loading {
    color: transparent;
  }

  .ebook-form-submit.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    margin: auto;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--white);
    border-radius: 50%;
    animation: spinner 0.6s linear infinite;
  }

  .ebook-message {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    margin-top: var(--space-3);
  }

  @media (min-width: 768px) {
    .ebook-message {
      grid-column: 1 / -1;
    }
  }

  .ebook-message.success {
    background: rgba(22, 163, 74, 0.15);
    color: #4ADE80;
  }

  .ebook-message.error {
    background: rgba(220, 38, 38, 0.15);
    color: #FCA5A5;
  }

  /* ---- CTA Section (Newsletter) ---- */
  .cta-section {
    background: var(--gradient-cta);
    color: var(--white);
    text-align: center;
    padding-block: var(--space-16);
    position: relative;
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .cta-section {
      padding-block: var(--space-20);
    }
  }

  .cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(59, 130, 246, 0.08) 1px, transparent 0);
    background-size: 32px 32px;
    pointer-events: none;
  }

  .cta-section::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 60%);
    border-radius: 50%;
    pointer-events: none;
  }

  .cta-section h2 {
    color: var(--white);
    margin-bottom: var(--space-4);
    position: relative;
  }

  .cta-section p {
    color: var(--blue-200);
    max-width: 50ch;
    margin-inline: auto;
    margin-bottom: var(--space-8);
    position: relative;
  }

  /* ---- Newsletter Form ---- */
  .newsletter-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    max-width: 480px;
    margin-inline: auto;
    position: relative;
  }

  @media (min-width: 480px) {
    .newsletter-form {
      flex-direction: row;
    }
  }

  .newsletter-form input[type="email"] {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.08);
    color: var(--white);
    font-size: var(--text-sm);
    min-height: 44px;
    transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
  }

  .newsletter-form input[type="email"]::placeholder {
    color: rgba(255, 255, 255, 0.4);
  }

  .newsletter-form input[type="email"]:focus {
    outline: none;
    border-color: var(--blue-400);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
  }

  .newsletter-form button {
    padding: var(--space-3) var(--space-6);
    background: var(--gradient-accent);
    color: var(--white);
    font-weight: 600;
    font-size: var(--text-sm);
    border-radius: var(--radius-md);
    transition: box-shadow var(--transition-base), transform var(--transition-fast);
    min-height: 44px;
    white-space: nowrap;
  }

  .newsletter-form button:hover {
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
    transform: translateY(-1px);
  }

  /* ---- Categories Grid ---- */
  .categories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }

  @media (min-width: 768px) {
    .categories-grid {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  @media (min-width: 1024px) {
    .categories-grid {
      grid-template-columns: repeat(5, 1fr);
    }
  }

  .category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    background: var(--white);
    border: 1px solid var(--gray-200);
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  }

  .category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), var(--glow-blue-sm);
    border-color: var(--blue-200);
  }

  .category-card-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-xl);
    transition: transform var(--transition-base);
  }

  .category-card:hover .category-card-icon {
    transform: scale(1.1);
  }

  .category-card-name {
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--navy-950);
  }

  .category-card-count {
    font-size: var(--text-xs);
    color: var(--gray-500);
  }

  /* ---- Hero Section (Homepage) ---- */
  .hero {
    padding-block: var(--space-16) var(--space-12);
    text-align: center;
    background: var(--gradient-hero);
    color: var(--white);
    position: relative;
    overflow: hidden;
    margin-top: calc(var(--header-height) * -1);
    padding-top: calc(var(--header-height) + var(--space-16));
  }

  @media (min-width: 768px) {
    .hero {
      padding-block: calc(var(--header-height) + var(--space-20)) var(--space-16);
    }
  }

  @media (min-width: 1024px) {
    .hero {
      padding-block: calc(var(--header-height) + var(--space-24)) var(--space-20);
    }
  }

  /* Dot grid pattern */
  .hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(59, 130, 246, 0.12) 1px, transparent 0);
    background-size: 28px 28px;
    pointer-events: none;
  }

  /* Ambient glow */
  .hero::after {
    content: '';
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(59, 130, 246, 0.15) 0%, transparent 65%);
    pointer-events: none;
  }

  .hero h1 {
    max-width: 18ch;
    margin-inline: auto;
    margin-bottom: var(--space-5);
    color: var(--white);
    position: relative;
    font-weight: 900;
  }

  .hero p {
    font-size: var(--text-lg);
    color: var(--blue-200);
    max-width: 46ch;
    margin-inline: auto;
    margin-bottom: var(--space-8);
    line-height: 1.7;
    position: relative;
  }

  .hero-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-8);
    background: var(--gradient-accent);
    color: var(--white);
    font-weight: 600;
    font-size: var(--text-sm);
    border-radius: var(--radius-full);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
    min-height: 48px;
    position: relative;
    letter-spacing: 0.01em;
  }

  .hero-cta:hover {
    box-shadow: 0 4px 30px rgba(59, 130, 246, 0.4);
    transform: translateY(-2px);
  }

  .hero-cta:active {
    transform: translateY(0);
  }

  /* Header transparency on hero */
  .hero ~ .site-header,
  .hero + * {
    /* handled via JS scroll state */
  }

  /* ---- Section Headers ---- */
  .section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-8);
  }

  .section-title {
    font-size: var(--text-2xl);
    position: relative;
    padding-bottom: var(--space-3);
  }

  .section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 48px;
    height: 3px;
    background: var(--gradient-accent);
    border-radius: var(--radius-full);
  }

  .section-link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--blue-500);
    display: flex;
    align-items: center;
    gap: var(--space-1);
    transition: color var(--transition-fast), gap var(--transition-fast);
  }

  .section-link:hover {
    color: var(--navy-700);
    gap: var(--space-2);
  }

  /* ---- Back to Top ---- */
  .back-to-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    color: var(--gray-600);
    z-index: 40;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base), background var(--transition-fast), box-shadow var(--transition-fast);
  }

  .back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .back-to-top:hover {
    background: var(--navy-950);
    color: var(--white);
    border-color: var(--navy-950);
    box-shadow: var(--shadow-lg), var(--glow-blue-sm);
  }

  /* ---- Site Footer ---- */
  .site-footer {
    background: var(--navy-950);
    color: var(--gray-300);
    padding-block: var(--space-16) var(--space-8);
    position: relative;
  }

  .site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-accent);
  }

  .footer-inner {
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--space-4);
  }

  @media (min-width: 768px) {
    .footer-inner {
      padding-inline: var(--space-8);
    }
  }

  @media (min-width: 1024px) {
    .footer-inner {
      padding-inline: var(--space-12);
    }
  }

  .footer-top {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-10);
    padding-bottom: var(--space-10);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  @media (min-width: 768px) {
    .footer-top {
      grid-template-columns: 2fr 1fr 1fr;
    }
  }

  .footer-brand p {
    font-size: var(--text-sm);
    color: var(--gray-400);
    line-height: 1.7;
    margin-top: var(--space-4);
    max-width: 36ch;
  }

  .footer-brand img {
    height: 28px;
    width: auto;
  }

  .footer-heading {
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-500);
    margin-bottom: var(--space-4);
  }

  .footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
  }

  .footer-links a {
    font-size: var(--text-sm);
    color: var(--gray-400);
    transition: color var(--transition-fast), padding-left var(--transition-fast);
  }

  .footer-links a:hover {
    color: var(--white);
    padding-left: var(--space-1);
  }

  .footer-bottom {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding-top: var(--space-8);
    font-size: var(--text-xs);
    color: var(--gray-500);
  }

  @media (min-width: 768px) {
    .footer-bottom {
      flex-direction: row;
      justify-content: space-between;
      align-items: center;
    }
  }

  /* ---- Category Page Header ---- */
  .category-hero {
    padding-block: var(--space-8);
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--space-4);
  }

  @media (min-width: 768px) {
    .category-hero {
      padding-inline: var(--space-8);
      padding-block: var(--space-12);
    }
  }

  @media (min-width: 1024px) {
    .category-hero {
      padding-inline: var(--space-12);
    }
  }

  .category-hero h1 {
    margin-bottom: var(--space-3);
  }

  .category-hero p {
    font-size: var(--text-lg);
    color: var(--gray-600);
    max-width: 60ch;
    line-height: 1.7;
  }

  /* ---- Buttons ---- */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: box-shadow var(--transition-base), transform var(--transition-fast);
    min-height: 44px;
  }

  .btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
  }

  .btn-primary:hover {
    box-shadow: 0 4px 20px rgba(30, 58, 138, 0.35);
    transform: translateY(-1px);
  }

  .btn-secondary {
    background: var(--white);
    color: var(--navy-800);
    border: 1px solid var(--gray-200);
  }

  .btn-secondary:hover {
    border-color: var(--blue-200);
    box-shadow: var(--shadow-md);
  }

  /* ---- Ebook Download Button (chamativo, com capa) ---- */
  .ebook-download-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
    max-width: var(--content-width);
    margin-top: var(--space-12);
    margin-inline: auto;
    padding: var(--space-8) var(--space-6);
    background: var(--gradient-cta);
    border-radius: var(--radius-2xl);
    color: var(--white);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(59, 130, 246, 0.2);
    cursor: pointer;
    transition: transform var(--transition-fast);
    animation: ebook-border-pulse 3s ease-in-out infinite;
  }

  @media (min-width: 768px) {
    .ebook-download-btn {
      flex-direction: row;
      padding: var(--space-8);
      gap: var(--space-8);
    }
  }

  /* Em desktop, CTA do ebook vai na sidebar */
  @media (min-width: 1024px) {
    .ebook-download-btn {
      display: none;
    }
  }

  .ebook-download-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(59, 130, 246, 0.06) 1px, transparent 0);
    background-size: 24px 24px;
    pointer-events: none;
  }

  .ebook-download-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 40%;
    height: 100%;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.12) 35%, rgba(255, 255, 255, 0.25) 50%, rgba(255, 255, 255, 0.12) 65%, transparent 100%);
    animation: ebook-shimmer-sweep 4s ease-in-out infinite;
    pointer-events: none;
  }

  .ebook-download-btn:hover {
    animation: none;
    box-shadow: var(--shadow-xl), var(--glow-blue-lg);
    border-color: rgba(59, 130, 246, 0.6);
    transform: translateY(-2px);
  }

  .ebook-download-btn:active {
    transform: translateY(0);
  }

  .ebook-cover-preview {
    flex-shrink: 0;
    width: 160px;
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), var(--glow-blue);
    transition: transform var(--transition-base);
    position: relative;
    z-index: 1;
  }

  @media (min-width: 768px) {
    .ebook-cover-preview {
      width: 180px;
    }
  }

  .ebook-download-btn:hover .ebook-cover-preview {
    transform: scale(1.04) rotate(-1deg);
  }

  .ebook-download-info {
    position: relative;
    z-index: 1;
    text-align: center;
  }

  @media (min-width: 768px) {
    .ebook-download-info {
      text-align: left;
    }
  }

  .ebook-download-info .ebook-cta-badge {
    margin-bottom: var(--space-2);
  }

  .ebook-download-info h3 {
    font-size: var(--text-xl);
    color: var(--white);
    margin-bottom: var(--space-3);
  }

  .ebook-download-info p {
    font-size: var(--text-sm);
    color: var(--blue-200);
    line-height: 1.7;
    margin-bottom: var(--space-5);
    max-width: 45ch;
  }

  .ebook-download-action {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-8);
    background: var(--gradient-accent);
    color: var(--white);
    font-weight: 700;
    font-size: var(--text-base);
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    transition: box-shadow var(--transition-base), transform var(--transition-fast);
    min-height: 48px;
    letter-spacing: 0.01em;
  }

  .ebook-download-action:hover {
    box-shadow: 0 4px 30px rgba(59, 130, 246, 0.5);
    transform: translateY(-1px);
  }

  /* ---- Ebook Modal (popup do formulario) ---- */
  .ebook-modal,
  .newsletter-modal {
    position: fixed;
    inset: 0;
    z-index: 56;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
  }

  .ebook-modal.active,
  .newsletter-modal.active {
    opacity: 1;
    visibility: visible;
  }

  .ebook-modal-content {
    width: min(520px, 95vw);
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl), var(--glow-blue-lg);
    overflow: hidden;
    transform: translateY(16px) scale(0.97);
    transition: transform var(--transition-slow);
    position: relative;
  }

  .ebook-modal.active .ebook-modal-content,
  .newsletter-modal.active .ebook-modal-content {
    transform: translateY(0) scale(1);
  }

  .ebook-modal-header {
    background: var(--gradient-cta);
    padding: var(--space-6);
    display: flex;
    align-items: center;
    gap: var(--space-5);
    position: relative;
    overflow: hidden;
  }

  .ebook-modal-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(59, 130, 246, 0.08) 1px, transparent 0);
    background-size: 20px 20px;
    pointer-events: none;
  }

  .ebook-modal-cover {
    width: 90px;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    flex-shrink: 0;
    position: relative;
    z-index: 1;
  }

  .ebook-modal-header-text {
    position: relative;
    z-index: 1;
  }

  .ebook-modal-header-text h3 {
    font-size: var(--text-lg);
    color: var(--white);
    margin-bottom: var(--space-1);
  }

  .ebook-modal-header-text p {
    font-size: var(--text-xs);
    color: var(--blue-200);
  }

  .ebook-modal-close {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-md);
    transition: color var(--transition-fast), background var(--transition-fast);
    z-index: 2;
  }

  .ebook-modal-close:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
  }

  .ebook-modal-body {
    padding: var(--space-6);
  }

  .ebook-modal-body .ebook-form,
  .ebook-modal-body .newsletter-form-modal {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
  }

  .ebook-modal-body .ebook-form input,
  .ebook-modal-body .newsletter-form-modal input {
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    background: var(--white);
    color: var(--gray-800);
    font-size: var(--text-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    min-height: 44px;
  }

  .ebook-modal-body .ebook-form input::placeholder,
  .ebook-modal-body .newsletter-form-modal input::placeholder {
    color: var(--gray-400);
  }

  .ebook-modal-body .ebook-form input:focus,
  .ebook-modal-body .newsletter-form-modal input:focus {
    outline: none;
    border-color: var(--blue-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  }

  .ebook-modal-body .ebook-form-submit,
  .ebook-modal-body .newsletter-form-modal .ebook-form-submit {
    margin-top: var(--space-2);
  }

  /* CTA intermediario no artigo (mini-banner) */
  .article-ebook-teaser {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    background: linear-gradient(135deg, var(--blue-50), rgba(219, 234, 254, 0.4));
    border: 1px solid var(--blue-200);
    border-left: 4px solid var(--blue-500);
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    margin-block: var(--space-8);
    cursor: pointer;
    transition: box-shadow var(--transition-base), transform var(--transition-fast), border-color var(--transition-fast);
  }

  .article-ebook-teaser:hover {
    box-shadow: var(--shadow-md), var(--glow-blue-sm);
    transform: translateY(-1px);
    border-color: var(--blue-400);
  }

  .article-ebook-teaser-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-accent);
    border-radius: var(--radius-md);
    color: var(--white);
  }

  .article-ebook-teaser-text {
    flex: 1;
  }

  .article-ebook-teaser-text strong {
    display: block;
    font-size: var(--text-sm);
    color: var(--navy-950);
    margin-bottom: 2px;
  }

  .article-ebook-teaser-text span {
    font-size: var(--text-xs);
    color: var(--gray-500);
  }

  .article-ebook-teaser-arrow {
    color: var(--blue-500);
    flex-shrink: 0;
    transition: transform var(--transition-fast);
  }

  .article-ebook-teaser:hover .article-ebook-teaser-arrow {
    transform: translateX(4px);
  }

  /* Imagem ilustrativa dentro do artigo */
  .post-body .article-illustration {
    width: 100%;
    border-radius: var(--radius-xl);
    margin-block: var(--space-8);
    box-shadow: var(--shadow-lg);
  }

  /* ---- Sidebar Ebook CTA ---- */
  .sidebar-ebook-cta {
    margin-top: var(--space-6);
    padding: var(--space-5);
    background: var(--gradient-cta);
    border-radius: var(--radius-xl);
    text-align: center;
    border: 1px solid rgba(59, 130, 246, 0.2);
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
    animation: ebook-border-pulse 3s ease-in-out infinite;
  }

  .sidebar-ebook-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(59, 130, 246, 0.06) 1px, transparent 0);
    background-size: 20px 20px;
    pointer-events: none;
  }

  .sidebar-ebook-cta::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 40%;
    height: 100%;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.12) 35%, rgba(255, 255, 255, 0.25) 50%, rgba(255, 255, 255, 0.12) 65%, transparent 100%);
    animation: ebook-shimmer-sweep 4s ease-in-out 1s infinite;
    pointer-events: none;
  }

  .sidebar-ebook-cover {
    width: 120px;
    margin: 0 auto var(--space-3);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
    position: relative;
    z-index: 1;
    transition: transform var(--transition-base);
  }

  .sidebar-ebook-cta:hover {
    animation: none;
    border-color: rgba(96, 165, 250, 0.8);
    box-shadow: 0 4px 40px rgba(30, 58, 138, 0.6), 0 0 30px rgba(59, 130, 246, 0.3);
  }

  .sidebar-ebook-cta:hover .sidebar-ebook-cover {
    transform: translateY(-2px) scale(1.02);
  }

  .sidebar-ebook-badge {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--navy-950);
    background: var(--blue-300);
    padding: 2px 8px;
    border-radius: 99px;
    margin-bottom: var(--space-2);
    position: relative;
    z-index: 1;
  }

  .sidebar-ebook-title {
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--space-2);
    line-height: 1.3;
    position: relative;
    z-index: 1;
  }

  .sidebar-ebook-desc {
    font-size: var(--text-xs);
    color: var(--blue-200);
    margin-bottom: var(--space-4);
    line-height: 1.4;
    position: relative;
    z-index: 1;
  }

  .sidebar-ebook-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    width: 100%;
    padding: var(--space-3);
    background: var(--white);
    color: var(--navy-800);
    font-size: var(--text-sm);
    font-weight: 700;
    border-radius: var(--radius-md);
    min-height: 44px;
    position: relative;
    z-index: 1;
    transition: box-shadow var(--transition-base), transform var(--transition-fast), background var(--transition-fast);
  }

  .sidebar-ebook-btn:hover {
    background: var(--blue-50);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
  }

  /* ---- Sidebar Newsletter CTA ---- */
  .sidebar-newsletter-cta {
    margin-top: var(--space-4);
    flex-shrink: 0;
  }

  .sidebar-newsletter-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    width: 100%;
    padding: var(--space-3);
    background: var(--white);
    color: var(--navy-800);
    font-size: var(--text-sm);
    font-weight: 600;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    min-height: 44px;
    transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-fast);
  }

  .sidebar-newsletter-btn:hover {
    border-color: var(--blue-200);
    box-shadow: var(--shadow-md), var(--glow-blue-sm);
    transform: translateY(-1px);
  }

  /* ---- Newsletter Modal Icon ---- */
  .newsletter-modal-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    color: var(--blue-300);
    flex-shrink: 0;
    position: relative;
    z-index: 1;
  }
}

/* ============================================================
   LAYER: UTILITIES
   ============================================================ */
@layer utilities {
  .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;
  }

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

  .hidden { display: none; }

  .fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .fade-in.visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* Stagger de entrada: cards em grid ganham delay progressivo */
  .fade-in:nth-child(1) { transition-delay: 0ms; }
  .fade-in:nth-child(2) { transition-delay: 80ms; }
  .fade-in:nth-child(3) { transition-delay: 160ms; }
  .fade-in:nth-child(4) { transition-delay: 240ms; }
  .fade-in:nth-child(5) { transition-delay: 320ms; }
  .fade-in:nth-child(6) { transition-delay: 400ms; }

  /* Gradient text */
  .gradient-text {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }
}

/* ============================================================
   LAYER: PRINT
   ============================================================ */
@layer print {
  @media print {
    .site-header,
    .mobile-menu,
    .mobile-menu-overlay,
    .search-modal,
    .toc,
    .toc-mobile,
    .ebook-cta,
    .cta-section,
    .newsletter-form,
    .related-posts,
    .back-to-top,
    .progress-bar,
    .site-footer,
    .header-actions {
      display: none !important;
    }

    body {
      font-size: 12pt;
      color: #000;
      background: #fff;
    }

    .post-body a::after {
      content: ' (' attr(href) ')';
      font-size: 0.8em;
      color: #666;
    }

    .post-hero-image {
      max-height: 300px;
    }

    .post-body {
      max-width: 100%;
    }
  }
}

/* ============================================================
   ACCESSIBILITY: 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;
  }

  .post-card:hover {
    transform: none;
  }

  .post-card:hover .post-card-image img {
    transform: none;
  }

  .category-card:hover {
    transform: none;
  }

  .category-card:hover .category-card-icon {
    transform: none;
  }

  .fade-in {
    opacity: 1;
    transform: none;
  }

  .hero-cta:hover,
  .back-to-top:hover,
  .btn-primary:hover,
  .ebook-form-submit:hover,
  .newsletter-form button:hover {
    transform: none;
  }
}