/*! Kraz - Ultra Leve 2026 v1.2 - Links Acessíveis */
:root {
    --p-bg: #f8fafc;
    --s-bg: #ffffff;
    --p-txt: #0f172a;
    --s-txt: #475569;
    --bdr: #cbd5e1;
    --acc: #2563eb;
    --acc-hover: #1d4ed8;
    --nav-bg: #ffffff;
    --nav-txt: #0f172a;
    --nav-bdr: #cbd5e1;
    --focus: 3px solid #2563eb;
    --ftr-bg: #f1f5f9;
    --ftr-txt: #334155;
    --ftr-link: #1e40af;     /* Cor específica para links do footer */
}

@media (prefers-color-scheme: dark) {
    :root {
        --p-bg: #0f172a;
        --s-bg: #1e293b;
        --p-txt: #f8fafc;
        --s-txt: #cbd5e1;
        --bdr: #475569;
        --acc: #60a5fa;
        --acc-hover: #93c5fd;
        --nav-bg: #1e293b;
        --nav-txt: #f1f5f9;
        --nav-bdr: #475569;
        --focus: 3px solid #60a5fa;
        --ftr-bg: #1e293b;
        --ftr-txt: #cbd5e1;
        --ftr-link: #93c5fd;  /* Cor específica para links do footer no modo escuro */
    }
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    background: var(--p-bg);
    color: var(--p-txt);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Imagens e Mídia */
img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

/* Formulários */
input, button, textarea, select {
    font: inherit;
}

/* Tipografia */
h1, h2, h3 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: clamp(2.25rem, 5vw, 3rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
}

h3 {
    font-size: clamp(1.375rem, 3vw, 1.75rem);
}

p {
    font-size: clamp(1.05rem, 2vw, 1.125rem);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

/* Links Gerais */
a {
    color: var(--acc);
    text-decoration: none;
}

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

/* Foco Acessível */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: var(--focus);
    outline-offset: 3px;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -3rem;
    left: .5rem;
    background: var(--acc);
    color: #ffffff;
    padding: .75rem 1rem;
    border-radius: .375rem;
    z-index: 10001;
    font-weight: 600;
}

.skip-link:focus {
    top: .5rem;
}

/* Navegação */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4.5rem;
    background: var(--nav-bg);
    border-bottom: 1px solid var(--nav-bdr);
    z-index: 1000;
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    height: 100%;
}

.navbar-brand .site-logo {
    height: 2.75rem;
    width: auto;
    display: block;
}

.navbar-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.navbar-menu a {
    color: var(--nav-txt);
    font-weight: 600;
    padding: .5rem .75rem;
    border-radius: .5rem;
}

.navbar-search {
    width: 16rem;
    padding: .65rem 1rem;
    border: 1px solid var(--nav-bdr);
    border-radius: .75rem;
    font-size: .95rem;
    background: var(--s-bg);
    color: var(--p-txt);
}

.navbar-search:focus {
    border-color: var(--acc);
    width: 18rem;
}

/* Botões */
.theme-toggle,
.navbar-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--nav-txt);
    padding: .5rem;
    border-radius: .5rem;
    font-size: 1.4rem;
}

/* Conteúdo Principal */
.main-container {
    width: 100%;
    flex: 1 0 auto;
    margin-top: 4.5rem;
    padding: 2.5rem 2rem;
}

/* Artigos */
.article {
    background: var(--s-bg);
    border: 1px solid var(--bdr);
    margin-bottom: 2.5rem;
    overflow: hidden;
    border-radius: .5rem;
}

.article-image {
    width: 100%;
    height: 16rem;
    object-fit: cover;
}

.article-content {
    padding: 2rem;
}

.article-meta {
    display: flex;
    align-items: center;
    color: var(--s-txt);
    font-size: .9rem;
    margin-bottom: 1rem;
}

.article-category {
    background: var(--acc);
    color: #ffffff;
    padding: .35rem .75rem;
    border-radius: 1rem;
    font-size: .8rem;
    font-weight: 600;
    margin-right: 1rem;
}

.article-title {
    margin: .75rem 0;
    font-size: 1.75rem;
}

.article-title a {
    color: var(--p-txt);
}

.article-excerpt {
    color: var(--s-txt);
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.article-read-more {
    color: var(--acc);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: .5rem;
}

/* Sidebar */
.sidebar {
    background: var(--s-bg);
    border: 1px solid var(--bdr);
    padding: 2rem;
    border-radius: .5rem;
}

.sidebar-section {
    margin-bottom: 2.5rem;
}

.sidebar-title {
    font-size: 1.35rem;
    margin-bottom: 1.25rem;
    padding-bottom: .75rem;
    border-bottom: 2px solid var(--bdr);
}

.sidebar-list {
    list-style: none;
}

.sidebar-list-item {
    margin-bottom: 1rem;
}

.sidebar-list-item a {
    color: var(--p-txt);
    display: flex;
    align-items: center;
    padding: .75rem;
    border-radius: .75rem;
    background: var(--p-bg);
}

.sidebar-list-item img {
    width: 4rem;
    height: 4rem;
    object-fit: cover;
    border-radius: .75rem;
    margin-right: 1rem;
}

/* Tags */
.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
}

.tag {
    background: var(--p-bg);
    color: var(--p-txt);
    padding: .6rem 1rem;
    border-radius: 2rem;
    font-size: .9rem;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid var(--bdr);
}

/* Footer - Links Acessíveis */
.footer {
    background: var(--ftr-bg);
    color: var(--ftr-txt);
    padding: 2.5rem 2rem 1.5rem;
    border-top: 1px solid var(--bdr);
    width: 100%;
    margin-top: auto;
}

/* Links no Footer - Acessibilidade WCAG */
.footer a {
    color: var(--ftr-link);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
    text-decoration-color: var(--ftr-link);
    font-weight: 600;
    transition: all 0.2s ease;
}

.footer a:hover,
.footer a:focus {
    color: var(--acc-hover);
    text-decoration-thickness: 3px;
    text-decoration-color: var(--acc-hover);
}

/* Adicionar indicador visual para links focados no footer */
.footer a:focus-visible {
    outline: 2px solid var(--ftr-link);
    outline-offset: 2px;
    background-color: rgba(30, 64, 175, 0.1);
    border-radius: 2px;
}

.footer-bar {
    text-align: center;
    padding: 1rem 0 0;
    font-size: .95rem;
    border-top: 1px solid var(--bdr);
    color: var(--ftr-txt);
    line-height: 1.8;
}

.footer-bar p {
    margin-bottom: 0;
    display: inline;
}

/* Separadores entre os links do footer */
.footer-bar a {
    margin: 0 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: 3px;
}

.footer-bar a:hover,
.footer-bar a:focus {
    background-color: rgba(30, 64, 175, 0.1);
}

/* Separador pipe */
.footer-bar span[style*="margin"] {
    margin: 0 0.5rem;
    color: var(--ftr-txt);
    opacity: 0.5;
}

/* Paginação */
.pagination {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: .75rem;
    margin: 3rem 0;
}

.pagination a,
.pagination span {
    padding: .75rem 1.25rem;
    background: var(--s-bg);
    border-radius: .75rem;
    text-decoration: none;
    color: var(--p-txt);
    border: 1px solid var(--bdr);
    font-weight: 500;
}

.pagination a:hover,
.pagination .current {
    background: var(--acc);
    color: #ffffff;
    border-color: var(--acc);
}

/* Breadcrumbs */
.breadcrumbs {
    margin: 1rem 0 2.5rem;
    padding: 1rem 0;
}

.breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: .95rem;
    gap: .5rem;
}

.breadcrumb-list li {
    display: flex;
    align-items: center;
}

.breadcrumb-list li:not(:last-child)::after {
    content: "›";
    margin-left: .5rem;
    color: var(--s-txt);
}

/* Responsividade */
@media (max-width: 48rem) {
    .navbar-container,
    .main-container,
    .footer {
        padding: 0 1.5rem;
    }
    
    .navbar-container {
        display: grid;
        grid-template-columns: auto 1fr auto;
        gap: 1rem;
    }
    
    .navbar-toggle {
        display: block;
        order: 1;
    }
    
    .navbar-brand {
        order: 2;
        margin: 0 auto;
    }
    
    .theme-toggle {
        order: 3;
    }
    
    .navbar-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--nav-bg);
        max-height: 0;
        overflow: hidden;
        border-top: 1px solid var(--nav-bdr);
        transition: max-height 0.3s ease;
    }
    
    .navbar-menu.active {
        max-height: 28rem;
    }
    
    .navbar-menu a {
        padding: 1.25rem 1.5rem;
        border-bottom: 1px solid var(--nav-bdr);
    }
    
    .search-form,
    .navbar-search {
        display: none;
    }
    
    .main-container {
        padding: 1.5rem;
    }
    
    .sidebar {
        margin-top: 2.5rem;
    }
    
    /* Footer responsivo */
    .footer {
        padding: 2rem 1.5rem 1rem;
    }
    
    .footer-bar {
        font-size: 0.9rem;
        line-height: 1.6;
    }
    
    .footer-bar a {
        display: inline-block;
        margin: 0.25rem 0.5rem;
        padding: 0.25rem 0.5rem;
    }
}

@media (min-width: 48.0625rem) {
    .navbar-menu {
        display: flex;
    }
    
    .navbar-toggle {
        display: none;
    }
    
    .navbar-search {
        display: block;
    }
    
    .main-container {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 3rem;
        align-items: start;
    }
    
    .sidebar {
        position: sticky;
        top: 6rem;
        max-height: calc(100vh - 6rem);
        overflow-y: auto;
    }
}

@media (min-width: 64.0625rem) {
    .navbar-container,
    .main-container,
    .footer {
        padding: 0 3rem;
    }
    
    .main-container {
        grid-template-columns: 1fr 350px;
        gap: 4rem;
    }
}

/* Prefers Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Estilos de Impressão */
@media print {
    .navbar,
    .sidebar,
    .footer {
        display: none !important;
    }
    
    .main-container {
        margin: 0;
        padding: 0;
        display: block;
    }
    
    * {
        background: #ffffff !important;
        color: #000000 !important;
        box-shadow: none !important;
    }
    
    a {
        color: #000000 !important;
        text-decoration: underline;
    }
    
    .footer a::after {
        content: " (" attr(href) ")";
        font-size: 0.9em;
        color: #666;
    }
}