/* =============================================================
   Hub Osteogênese Imperfeita — CSS Global Unificado
   Versão 2.0 | Arquitetura de Componentes | WCAG 2.1 AA
   =============================================================
   ÍNDICE:
   1.  Reset & Base
   2.  Design Tokens (Variáveis CSS)
   3.  Skip Link de Acessibilidade
   4.  Header Global
   5.  Navegação Sidebar
   6.  Breadcrumb
   7.  Layout Principal
   8.  Botões
   9.  Cards & Componentes
   10. Hero Sections
   11. Widget de Acessibilidade
   12. Footer Global
   13. Utilitários
   14. Responsividade
   15. Modos de Acessibilidade (Alto Contraste / Fonte Grande)
   16. Print
   ============================================================= */

/* =========================================================
   1. RESET & BASE
   ========================================================= */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 100%; /* 16px base para cálculos rem */
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    font-size: 1rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

ul, ol {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
}

/* =========================================================
   2. DESIGN TOKENS — fonte única de verdade
   ========================================================= */
:root {
    /* — Paleta principal — */
    --color-primary:        #2c3e50; /* Azul escuro */
    --color-primary-hover:  #34495e;
    --color-secondary:      #2980b9; /* Azul médio acessível (contraste 4.7:1 em branco) */
    --color-secondary-hover:#1a6fa4;
    --color-accent:         #1a6fa4;
    --color-success:        #1e7e34; /* Verde acessível */
    --color-warning:        #856404; /* Amarelo escuro para texto */
    --color-warning-bg:     #fff3cd;
    --color-danger:         #c0392b;
    --color-info:           #0c5460; /* Teal escuro acessível */
    --color-info-bg:        #d1ecf1;

    /* — Neutros — */
    --color-white:          #ffffff;
    --color-gray-50:        #f8f9fa;
    --color-gray-100:       #f1f3f5;
    --color-gray-200:       #e9ecef;
    --color-gray-300:       #dee2e6;
    --color-gray-400:       #ced4da;
    --color-gray-500:       #adb5bd;
    --color-gray-600:       #6c757d;
    --color-gray-700:       #495057;
    --color-gray-800:       #343a40;
    --color-gray-900:       #212529;

    /* — Textos — */
    --text-primary:    var(--color-gray-900);
    --text-secondary:  var(--color-gray-700);
    --text-muted:      var(--color-gray-600);
    --text-on-dark:    #ffffff;
    --text-on-dark-muted: rgba(255,255,255,0.85);

    /* — Backgrounds — */
    --bg-primary:      var(--color-white);
    --bg-secondary:    var(--color-gray-50);
    --bg-tertiary:     var(--color-gray-100);
    --bg-header:       var(--color-primary);
    --bg-footer:       var(--color-primary);

    /* — Bordas — */
    --border-color:    var(--color-gray-300);
    --border-radius-sm:  4px;
    --border-radius:     8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --border-radius-pill: 50px;

    /* — Sombras — */
    --shadow-sm:    0 1px 3px rgba(0,0,0,0.12);
    --shadow-md:    0 4px 12px rgba(0,0,0,0.10);
    --shadow-lg:    0 8px 24px rgba(0,0,0,0.12);
    --shadow-focus: 0 0 0 3px rgba(41,128,185,0.4);

    /* — Espaçamento (escala × 1.5rem) — */
    --space-1:  0.375rem;  /*  6px */
    --space-2:  0.75rem;   /* 12px */
    --space-3:  1.125rem;  /* 18px */
    --space-4:  1.5rem;    /* 24px */
    --space-5:  2.25rem;   /* 36px */
    --space-6:  3rem;      /* 48px */
    --space-7:  4.5rem;    /* 72px */

    /* — Tipografia — */
    --font-size-xs:   0.75rem;   /* 12px */
    --font-size-sm:   0.875rem;  /* 14px */
    --font-size-base: 1rem;      /* 16px */
    --font-size-md:   1.125rem;  /* 18px */
    --font-size-lg:   1.25rem;   /* 20px */
    --font-size-xl:   1.5rem;    /* 24px */
    --font-size-2xl:  2rem;      /* 32px */
    --font-size-3xl:  2.5rem;    /* 40px */

    /* — Layout — */
    --header-height:      70px;
    --sidebar-width:      280px;
    --content-max-width: 1200px;
    --container-padding:   20px;

    /* — Transições — */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

/* =========================================================
   3. SKIP LINK DE ACESSIBILIDADE
   ========================================================= */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-2);
    z-index: 9999;
    background: var(--color-secondary);
    color: var(--text-on-dark);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--border-radius);
    font-weight: 700;
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-2);
    outline: 3px solid var(--color-warning);
    outline-offset: 2px;
}

/* =========================================================
   4. HEADER GLOBAL — idêntico em todas as páginas
   ========================================================= */
.site-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: var(--text-on-dark);
    height: var(--header-height);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
    gap: var(--space-3);
}

/* — Logo — */
.site-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    color: var(--text-on-dark);
    flex: 1;
    justify-content: center;
}

.site-logo__icon {
    font-size: 1.75rem;
    line-height: 1;
    flex-shrink: 0;
    color: #7fb3d3;
}

.site-logo__text {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-on-dark);
    line-height: 1.2;
}

.site-logo__text span {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: 400;
    color: var(--text-on-dark-muted);
    letter-spacing: 0.03em;
}

/* — Botão Menu Mobile — */
.menu-toggle {
    background: transparent;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: var(--border-radius);
    color: var(--text-on-dark);
    font-size: 1.25rem;
    cursor: pointer;
    padding: var(--space-1) var(--space-2);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    flex-shrink: 0;
}

.menu-toggle:hover,
.menu-toggle:focus-visible {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.6);
    outline: none;
}

.menu-toggle:focus-visible {
    box-shadow: var(--shadow-focus);
}

/* — Busca no Header — */
.header-search {
    flex-shrink: 0;
    position: relative;
}

.header-search__form {
    display: flex;
    align-items: center;
}

.header-search__input {
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--border-radius-pill);
    color: var(--text-on-dark);
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-sm);
    width: 180px;
    transition: all var(--transition-base);
}

.header-search__input::placeholder {
    color: rgba(255,255,255,0.6);
}

.header-search__input:focus {
    outline: none;
    background: rgba(255,255,255,0.25);
    border-color: rgba(255,255,255,0.7);
    width: 220px;
    box-shadow: var(--shadow-focus);
}

.header-search__btn {
    background: transparent;
    border: none;
    color: var(--text-on-dark);
    cursor: pointer;
    padding: var(--space-1);
    margin-left: -36px;
    font-size: var(--font-size-sm);
}

/* — Widget Acessibilidade no Header — */
.header-a11y {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    flex-shrink: 0;
}

.header-a11y__btn {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--border-radius);
    color: var(--text-on-dark);
    cursor: pointer;
    font-size: var(--font-size-xs);
    font-weight: 700;
    padding: 4px 8px;
    min-width: 36px;
    min-height: 36px;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
}

.header-a11y__btn:hover,
.header-a11y__btn:focus-visible {
    background: rgba(255,255,255,0.2);
    border-color: rgba(255,255,255,0.7);
    outline: none;
    box-shadow: var(--shadow-focus);
}

/* =========================================================
   5. NAVEGAÇÃO SIDEBAR
   ========================================================= */
.site-sidebar {
    position: fixed;
    top: var(--header-height);
    left: -320px;
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
    transition: left var(--transition-base);
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 999;
    /* Barra de rolagem fina */
    scrollbar-width: thin;
    scrollbar-color: var(--color-gray-300) transparent;
}

.site-sidebar::-webkit-scrollbar {
    width: 5px;
}
.site-sidebar::-webkit-scrollbar-thumb {
    background: var(--color-gray-300);
    border-radius: 3px;
}

.site-sidebar.is-open {
    left: 0;
}

.sidebar-overlay {
    position: fixed;
    inset: var(--header-height) 0 0 0;
    background: rgba(0,0,0,0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 998;
    cursor: pointer;
}

.sidebar-overlay.is-active {
    opacity: 1;
    visibility: visible;
}

/* — Cabeçalho da Sidebar — */
.sidebar-header {
    background: var(--bg-secondary);
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-header__title {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.sidebar-close {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 1.2rem;
    padding: 4px;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    min-width: 32px;
    min-height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-close:hover,
.sidebar-close:focus-visible {
    color: var(--color-primary);
    background: var(--bg-tertiary);
    outline: none;
    box-shadow: 0 0 0 2px var(--color-secondary);
}

/* — Nav do Sidebar — */
.sidebar-nav {
    padding: var(--space-2) 0;
}

.sidebar-nav__item {
    border-bottom: 1px solid var(--color-gray-100);
}

.sidebar-nav__link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 14px var(--space-4);
    color: var(--text-primary);
    font-weight: 500;
    font-size: var(--font-size-base);
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
}

.sidebar-nav__link:hover,
.sidebar-nav__link:focus-visible {
    background: var(--bg-secondary);
    color: var(--color-secondary);
    outline: none;
    padding-left: calc(var(--space-4) + 4px);
}

.sidebar-nav__link:focus-visible {
    box-shadow: inset 3px 0 0 var(--color-secondary);
}

.sidebar-nav__link.is-active {
    background: var(--color-secondary);
    color: var(--text-on-dark);
    font-weight: 600;
}

.sidebar-nav__link.is-active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--color-accent);
}

.sidebar-nav__icon {
    width: 20px;
    text-align: center;
    flex-shrink: 0;
    font-size: 1rem;
}

.sidebar-nav__text {
    flex: 1;
    line-height: 1.3;
}

/* — Submenu — */
.sidebar-submenu-toggle {
    background: transparent;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: var(--border-radius-sm);
    transition: transform var(--transition-base);
    font-size: 0.8rem;
    display: flex;
    align-items: center;
}

.sidebar-submenu-toggle:hover,
.sidebar-submenu-toggle:focus-visible {
    background: rgba(0,0,0,0.07);
    outline: none;
}

.sidebar-submenu-toggle.is-rotated {
    transform: rotate(180deg);
}

.sidebar-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
    background: var(--bg-secondary);
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-submenu.is-open {
    max-height: 600px;
}

.sidebar-submenu__item {
    border-bottom: 1px solid var(--color-gray-200);
}

.sidebar-submenu__item:last-child {
    border-bottom: none;
}

.sidebar-submenu__link {
    display: block;
    padding: 11px var(--space-4) 11px 52px;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.sidebar-submenu__link:hover,
.sidebar-submenu__link:focus-visible {
    background: var(--color-white);
    color: var(--color-secondary);
    padding-left: 56px;
    outline: none;
}

.sidebar-submenu__link.is-active {
    color: var(--color-secondary);
    font-weight: 700;
    background: rgba(41,128,185,0.08);
}

/* =========================================================
   6. BREADCRUMB
   ========================================================= */
.breadcrumb {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-2) 0;
}

.breadcrumb__list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-1);
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: var(--font-size-sm);
}

.breadcrumb__link {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb__link:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

.breadcrumb__separator {
    color: var(--text-muted);
    font-size: 0.7rem;
    margin: 0 2px;
}

.breadcrumb__current {
    color: var(--text-secondary);
    font-weight: 600;
}

/* =========================================================
   7. LAYOUT PRINCIPAL
   ========================================================= */
.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    margin-top: var(--header-height);
    flex: 1;
    background: var(--bg-primary);
}

.container {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.page-body {
    padding: var(--space-6) 0;
}

/* — Headings — */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--space-3);
    color: var(--text-primary);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-md); }
h6 { font-size: var(--font-size-base); }

/* — Links — */
a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-secondary-hover);
    text-decoration: underline;
}

a:focus-visible {
    outline: 3px solid var(--color-secondary);
    outline-offset: 2px;
    border-radius: 2px;
}

/* — Seções de Conteúdo — */
.content-section {
    margin-bottom: var(--space-6);
    padding: var(--space-5);
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-gray-200);
}

.content-section h2 {
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-2);
    border-bottom: 3px solid var(--color-secondary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.content-section h3 {
    margin-top: var(--space-5);
    margin-bottom: var(--space-3);
    color: var(--color-primary);
}

.section-title {
    font-size: var(--font-size-2xl);
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-2);
    border-bottom: 3px solid var(--color-secondary);
    display: inline-block;
}

/* =========================================================
   8. BOTÕES
   ========================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.75rem 1.5rem;
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-base);
    min-height: 44px; /* WCAG mínimo touch */
    line-height: 1.2;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 3px solid var(--color-secondary);
    outline-offset: 3px;
}

.btn-primary {
    background: var(--color-secondary);
    color: var(--text-on-dark);
    border-color: var(--color-secondary);
}

.btn-primary:hover {
    background: var(--color-secondary-hover);
    border-color: var(--color-secondary-hover);
    color: var(--text-on-dark);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--color-secondary);
    border-color: var(--color-secondary);
}

.btn-secondary:hover {
    background: var(--color-secondary);
    color: var(--text-on-dark);
    text-decoration: none;
}

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

.btn-white:hover {
    background: rgba(255,255,255,0.9);
    color: var(--color-primary);
    text-decoration: none;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: var(--font-size-sm);
    min-height: 36px;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: var(--font-size-lg);
    min-height: 52px;
}

/* =========================================================
   9. CARDS & COMPONENTES
   ========================================================= */

/* — Card Base — */
.card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-lg);
    padding: var(--space-5);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--color-gray-300);
}

.card:focus-within {
    box-shadow: var(--shadow-focus);
}

.card__icon {
    font-size: 2.5rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-3);
    line-height: 1;
}

.card__title {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.card__body {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}

/* — Grid de Cards — */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
    margin-top: var(--space-5);
}

/* — Caixa de Destaque / Info — */
.info-box {
    background: var(--color-info-bg);
    border-left: 4px solid var(--color-info);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    padding: var(--space-4);
    margin-bottom: var(--space-4);
    color: var(--color-info);
}

.info-box h3, .info-box h4 {
    color: var(--color-info);
    margin-bottom: var(--space-2);
}

.warning-box {
    background: var(--color-warning-bg);
    border-left: 4px solid #d39e00;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    padding: var(--space-4);
    margin-bottom: var(--space-4);
    color: var(--color-warning);
}

.warning-box h3, .warning-box h4 {
    color: var(--color-warning);
    margin-bottom: var(--space-2);
}

.highlight-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--space-5);
    margin-bottom: var(--space-4);
}

.highlight-box h3, .highlight-box h4 {
    color: var(--color-primary);
    margin-bottom: var(--space-3);
}

/* — Tabelas — */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: var(--space-4);
}

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

thead th {
    background: var(--color-secondary);
    color: var(--text-on-dark);
    padding: 12px var(--space-3);
    text-align: left;
    font-weight: 700;
    font-size: var(--font-size-sm);
}

tbody td {
    padding: 11px var(--space-3);
    text-align: left;
    border-bottom: 1px solid var(--color-gray-200);
    font-size: var(--font-size-sm);
    vertical-align: top;
}

tbody tr:nth-child(even) {
    background: var(--bg-secondary);
}

tbody tr:hover {
    background: rgba(41,128,185,0.05);
}

/* — Badges — */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: var(--border-radius-pill);
    font-size: var(--font-size-xs);
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    line-height: 1.5;
}

.badge-primary   { background: var(--color-secondary); color: var(--text-on-dark); }
.badge-success   { background: var(--color-success);   color: var(--text-on-dark); }
.badge-warning   { background: #f39c12; color: var(--color-gray-900); }
.badge-danger    { background: var(--color-danger);    color: var(--text-on-dark); }
.badge-info      { background: var(--color-info);      color: var(--text-on-dark); }
.badge-secondary { background: var(--color-gray-200);  color: var(--text-secondary); }

/* — Índice de Página (sticky) — */
.page-index {
    background: var(--color-white);
    border-bottom: 2px solid var(--border-color);
    position: sticky;
    top: var(--header-height);
    z-index: 900;
    box-shadow: var(--shadow-sm);
}

.page-index__inner {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: var(--space-2) var(--container-padding);
    display: flex;
    gap: var(--space-2);
    overflow-x: auto;
    scrollbar-width: thin;
}

.page-index__inner::-webkit-scrollbar { height: 4px; }
.page-index__inner::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

.page-index__link {
    white-space: nowrap;
    padding: 7px 14px;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    text-decoration: none;
    border: 1px solid transparent;
}

.page-index__link:hover,
.page-index__link:focus-visible {
    background: var(--bg-secondary);
    color: var(--color-secondary);
    text-decoration: none;
    outline: none;
    border-color: var(--color-gray-300);
}

.page-index__link.is-active {
    background: var(--color-secondary);
    color: var(--text-on-dark);
    border-color: var(--color-secondary);
}

/* =========================================================
   10. HERO SECTIONS
   ========================================================= */
.page-hero {
    background: linear-gradient(135deg, var(--color-secondary) 0%, #16a085 100%);
    color: var(--text-on-dark);
    padding: var(--space-7) 0;
    text-align: center;
}

.page-hero--medication {
    background: linear-gradient(135deg, #2980b9 0%, #1a6fa4 100%);
}

.page-hero--home {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-info) 100%);
    padding: var(--space-7) 0 var(--space-6);
}

.page-hero__content {
    max-width: 860px;
    margin: 0 auto;
}

.page-hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(255,255,255,0.2);
    padding: var(--space-1) var(--space-4);
    border-radius: var(--border-radius-pill);
    font-size: var(--font-size-sm);
    font-weight: 700;
    margin-bottom: var(--space-4);
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.page-hero__title {
    font-size: var(--font-size-3xl);
    color: var(--text-on-dark);
    margin-bottom: var(--space-3);
    line-height: 1.2;
}

.page-hero__subtitle {
    font-size: var(--font-size-md);
    color: var(--text-on-dark-muted);
    margin-bottom: var(--space-5);
    line-height: 1.7;
}

.page-hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    justify-content: center;
    margin-top: var(--space-4);
}

.page-hero__meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--font-size-sm);
    background: rgba(255,255,255,0.15);
    padding: 6px 14px;
    border-radius: var(--border-radius);
}

.hero-buttons {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--space-4);
}

/* =========================================================
   11. WIDGET DE ACESSIBILIDADE (flutuante)
   ========================================================= */
.a11y-widget {
    position: fixed;
    bottom: var(--space-5);
    right: var(--space-4);
    z-index: 990;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--space-2);
}

.a11y-widget__toggle {
    background: var(--color-secondary);
    color: var(--text-on-dark);
    border: none;
    border-radius: var(--border-radius-pill);
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--space-1);
    min-height: 44px;
    transition: all var(--transition-base);
}

.a11y-widget__toggle:hover,
.a11y-widget__toggle:focus-visible {
    background: var(--color-secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
    outline: none;
}

.a11y-widget__panel {
    background: var(--color-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--space-4);
    box-shadow: var(--shadow-lg);
    width: 220px;
    display: none;
}

.a11y-widget__panel.is-open {
    display: block;
}

.a11y-widget__title {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.a11y-widget__btn {
    width: 100%;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 600;
    padding: 9px var(--space-3);
    text-align: left;
    transition: all var(--transition-fast);
    margin-bottom: var(--space-1);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    min-height: 40px;
}

.a11y-widget__btn:hover,
.a11y-widget__btn:focus-visible {
    background: var(--color-secondary);
    color: var(--text-on-dark);
    border-color: var(--color-secondary);
    outline: none;
}

.a11y-widget__btn.is-active {
    background: var(--color-secondary);
    color: var(--text-on-dark);
    border-color: var(--color-secondary);
}

/* — Botão Voltar ao Topo — */
.back-to-top {
    position: fixed;
    bottom: 90px;
    right: var(--space-4);
    background: var(--color-primary);
    color: var(--text-on-dark);
    border: none;
    border-radius: var(--border-radius-pill);
    width: 44px;
    height: 44px;
    cursor: pointer;
    font-size: 1rem;
    box-shadow: var(--shadow-md);
    z-index: 989;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-base);
}

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

.back-to-top:hover,
.back-to-top:focus-visible {
    background: var(--color-secondary);
    outline: none;
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

/* =========================================================
   12. FOOTER GLOBAL — idêntico em todas as páginas
   ========================================================= */
.site-footer {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: var(--text-on-dark);
    padding: var(--space-7) 0 var(--space-4);
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid rgba(255,255,255,0.15);
}

.footer-section__title {
    color: var(--text-on-dark);
    font-size: var(--font-size-base);
    font-weight: 700;
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.footer-section__text {
    color: var(--text-on-dark-muted);
    font-size: var(--font-size-sm);
    line-height: 1.7;
    margin-bottom: var(--space-2);
}

.footer-section__links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section__links li {
    margin-bottom: var(--space-1);
}

.footer-section__links a {
    color: var(--text-on-dark-muted);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.footer-section__links a:hover {
    color: var(--text-on-dark);
    text-decoration: underline;
}

.footer-section__links a:focus-visible {
    outline: 2px solid rgba(255,255,255,0.7);
    outline-offset: 2px;
    border-radius: 2px;
}

/* — Selos de Conformidade — */
.footer-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.footer-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--border-radius);
    padding: 4px 10px;
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--text-on-dark-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* — Rodapé do Footer — */
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.footer-bottom__copy {
    color: rgba(255,255,255,0.7);
    font-size: var(--font-size-xs);
    margin: 0;
}

.footer-bottom__disclaimer {
    color: rgba(255,255,255,0.6);
    font-size: var(--font-size-xs);
    font-style: italic;
    max-width: 600px;
    margin: 0;
}

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

.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-muted  { color: var(--text-muted); }
.text-small  { font-size: var(--font-size-sm); }
.text-white  { color: var(--text-on-dark) !important; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-2); }
.mt-2 { margin-top: var(--space-3); }
.mt-3 { margin-top: var(--space-4); }
.mt-4 { margin-top: var(--space-5); }
.mt-5 { margin-top: var(--space-6); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-2); }
.mb-2 { margin-bottom: var(--space-3); }
.mb-3 { margin-bottom: var(--space-4); }
.mb-4 { margin-bottom: var(--space-5); }
.mb-5 { margin-bottom: var(--space-6); }

.d-flex           { display: flex; }
.align-center     { align-items: center; }
.justify-center   { justify-content: center; }
.justify-between  { justify-content: space-between; }
.gap-1 { gap: var(--space-2); }
.gap-2 { gap: var(--space-3); }
.gap-3 { gap: var(--space-4); }

.divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--space-5) 0;
}

/* — Link Externo — */
.external-link::after {
    content: '\f08e';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 0.7em;
    margin-left: 4px;
    opacity: 0.7;
}

/* =========================================================
   14. RESPONSIVIDADE
   ========================================================= */
@media (max-width: 1024px) {
    :root {
        --header-height: 64px;
    }

    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .header-search {
        display: none;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.625rem; }
    h3 { font-size: 1.35rem; }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-5);
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .page-hero {
        padding: var(--space-6) 0;
    }

    .page-hero__title {
        font-size: 1.75rem;
    }

    .content-section {
        padding: var(--space-4);
    }

    .header-a11y {
        display: none;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 16px;
    }

    .site-logo__text {
        font-size: 1.1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-lg {
        width: 100%;
        max-width: 320px;
    }
}

/* =========================================================
   15. MODOS DE ACESSIBILIDADE
   ========================================================= */

/* — Alto Contraste — */
body.a11y-high-contrast {
    --color-secondary:       #005b99;
    --color-secondary-hover: #004477;
    --text-primary:    #000000;
    --text-secondary:  #1a1a1a;
    --text-muted:      #2d2d2d;
    --bg-primary:      #ffffff;
    --bg-secondary:    #f0f0f0;
    --border-color:    #000000;
}

body.a11y-high-contrast a {
    text-decoration: underline;
}

body.a11y-high-contrast .card {
    border: 2px solid #000000;
}

body.a11y-high-contrast .badge-primary,
body.a11y-high-contrast .btn-primary {
    background: #005b99;
    outline: 2px solid #000000;
}

/* — Fonte Grande — */
body.a11y-large-text {
    font-size: 1.125rem;
}

body.a11y-large-text h1 { font-size: 3rem; }
body.a11y-large-text h2 { font-size: 2.5rem; }
body.a11y-large-text h3 { font-size: 1.875rem; }
body.a11y-large-text h4 { font-size: 1.5rem; }
body.a11y-large-text .sidebar-nav__link { font-size: 1.05rem; }
body.a11y-large-text .btn { font-size: 1.1rem; }

/* — Modo Escuro — */
body.a11y-dark-mode {
    --bg-primary:      #1a1a2e;
    --bg-secondary:    #16213e;
    --bg-tertiary:     #0f3460;
    --text-primary:    #e8e8e8;
    --text-secondary:  #c8c8c8;
    --text-muted:      #a0a0a0;
    --border-color:    #3a3a5c;
    --color-gray-200:  #2d2d4a;
    --color-gray-100:  #252540;
}

body.a11y-dark-mode .site-header,
body.a11y-dark-mode .site-footer {
    background: linear-gradient(135deg, #0d1b2a 0%, #1a1a2e 100%);
}

body.a11y-dark-mode .card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

body.a11y-dark-mode .highlight-box {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

body.a11y-dark-mode .content-section {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

body.a11y-dark-mode tbody tr:nth-child(even) {
    background: var(--bg-tertiary);
}

body.a11y-dark-mode .a11y-widget__panel,
body.a11y-dark-mode .site-sidebar {
    background: #1a1a2e;
    border-color: #3a3a5c;
}

body.a11y-dark-mode .breadcrumb {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

/* =========================================================
   16. PRINT
   ========================================================= */
@media print {
    .site-header,
    .site-sidebar,
    .sidebar-overlay,
    .a11y-widget,
    .back-to-top,
    .menu-toggle,
    .page-index,
    .skip-link {
        display: none !important;
    }

    .main-content {
        margin-top: 0 !important;
    }

    body {
        font-size: 11pt;
        color: #000;
        background: #fff;
    }

    a {
        color: #000;
        text-decoration: underline;
    }

    .content-section {
        border: 1px solid #ccc;
        break-inside: avoid;
        page-break-inside: avoid;
    }

    .site-footer {
        background: none;
        color: #333;
        border-top: 1px solid #ccc;
        padding: 1rem 0 0;
    }

    .footer-section__text,
    .footer-section__links a {
        color: #333;
    }
}