/* ==========================================================================
   João Carvalho - Blog — Design System (paleta neutra branco/cinza)
   ========================================================================== */

:root {
  /* Cores — paleta neutra por enquanto */
  --color-white: #ffffff;
  --color-bg: #ffffff;
  --color-ink: #333333;
  --color-ink-soft: #666666;
  --color-muted: #999999;
  --color-border: #e2e2e2;
  --color-panel: #fafafa;
  --color-accent: #3a3a3a;
  --color-accent-soft: #f0f0f0;
  --color-card-bg: #ffffff;

  /* Tipografia — família única, como no site de referência */
  --font-sans: "Libre Franklin", "Helvetica Neue", Arial, sans-serif;

  /* Espaçamento */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4.5rem;

  /* Layout */
  --container-max: 1160px;
  --radius: 6px;
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.04);
}

@import url("https://fonts.googleapis.com/css2?family=Libre+Franklin:wght@400;500;600;700;800&display=swap");

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--color-ink-soft);
  background: var(--color-bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--color-ink); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  color: var(--color-ink);
  line-height: 1.3;
  font-weight: 700;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-3);
}
@media (max-width: 480px) {
  .container { padding: 0 1.75rem; }
}

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--color-ink); color: #fff;
  padding: 0.5rem 1rem; z-index: 200;
}
.skip-link:focus { left: var(--space-2); top: var(--space-2); }

/* ---------- Identidade (cabeçalho) ---------- */
.identity-name {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-ink);
  letter-spacing: -0.01em;
  line-height: 1.1;
}
.identity-name:hover { text-decoration: none; }
.identity-logo {
  display: block;
  height: 58px;
  width: auto;
}
.identity-avatar {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--color-border);
  flex-shrink: 0;
}
.footer-brand-logo {
  display: block;
  height: 56px;
  width: auto;
  margin-bottom: var(--space-1);
}
/* ---------- Navegação ---------- */
.site-header { background: var(--color-white); position: sticky; top: 0; z-index: 100; }
.nav-bar {
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
}
.nav-links {
  display: flex;
  gap: var(--space-3);
  list-style: none;
  align-items: center;
  flex-wrap: wrap;
}
.nav-links a {
  color: var(--color-ink-soft);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.nav-links a:hover, .nav-links a[aria-current="page"] {
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: 2px solid var(--color-ink);
  padding-bottom: 2px;
}
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 0.4rem 0.6rem;
  cursor: pointer;
}
@media (max-width: 800px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column; align-items: flex-start; gap: 0;
    padding: var(--space-2) var(--space-3);
    display: none;
  }
  .nav-links.is-open { display: flex; }
  .nav-links li { width: 100%; border-bottom: 1px solid var(--color-border); }
  .nav-links li:last-child { border-bottom: none; }
  .nav-links a { display: block; padding: var(--space-2) 0; }
  .identity-avatar { width: 40px; height: 40px; }
  .identity-logo { height: 40px; }
}

/* ---------- Botões ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.65rem 1.3rem; border-radius: 4px;
  font-weight: 700; font-size: 0.85rem;
  text-transform: uppercase; letter-spacing: 0.03em;
  border: 1px solid var(--color-ink);
  cursor: pointer; background: var(--color-ink); color: #fff;
}
.btn:hover { background: #000; text-decoration: none; }
.btn-outline { background: transparent; color: var(--color-ink); }
.btn-outline:hover { background: var(--color-ink); color: #fff; }
.btn-block { width: 100%; justify-content: center; }

/* ---------- Seções ---------- */
.section { padding: var(--space-5) 0; }
.section-tight { padding: var(--space-4) 0; }
.section-alt { background: var(--color-panel); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.section-header { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-3); margin-bottom: var(--space-3); flex-wrap: wrap; }
.section-header h2 { font-size: 1.4rem; text-transform: uppercase; letter-spacing: 0.02em; }
.section-kicker { color: var(--color-muted); font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.72rem; display: block; margin-bottom: 0.3rem; }
.section-lede { color: var(--color-ink-soft); max-width: 60ch; }
.section-link { font-weight: 700; font-size: 0.82rem; text-transform: uppercase; white-space: nowrap; }

/* ---------- Layout do feed com sidebar ---------- */
.feed-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-5);
  align-items: start;
}
@media (max-width: 900px) {
  .feed-layout { grid-template-columns: 1fr; }
}

/* ---------- Post do feed (estilo linha, foto + texto) ---------- */
.feed-post {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-3);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
}
.feed-post:first-child { padding-top: 0; }
.feed-post-media { border-radius: var(--radius); overflow: hidden; background: var(--color-panel); }
.feed-post-media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 16/10; }
.feed-post-date {
  font-size: 0.72rem; font-weight: 700; text-transform: uppercase; color: var(--color-muted);
  margin-bottom: 0.4rem; letter-spacing: 0.03em;
}
.feed-post-title { font-size: 1.25rem; margin-bottom: 0.3rem; }
.feed-post-title a { color: var(--color-ink); }
.feed-post-title a:hover { text-decoration: none; color: #000; }
.feed-post-byline { font-size: 0.82rem; color: var(--color-muted); margin-bottom: 0.6rem; }
.feed-post-excerpt { color: var(--color-ink-soft); margin-bottom: 0.7rem; font-size: 0.95rem; }
.feed-post-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 0.5rem; }
.tag-pill {
  font-size: 0.72rem; font-weight: 600; color: var(--color-ink-soft);
  background: var(--color-accent-soft); border-radius: 3px; padding: 0.18rem 0.5rem;
}
.feed-post-more { font-weight: 700; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; }

@media (max-width: 620px) {
  .feed-post { grid-template-columns: 1fr; }
}

.results-info { color: var(--color-muted); font-size: 0.85rem; margin-bottom: var(--space-2); }
.empty-state { text-align: center; padding: var(--space-5) 0; color: var(--color-muted); }

.pagination {
  display: flex; gap: 0.4rem; justify-content: center; padding-top: var(--space-3);
}
.pagination button {
  border: 1px solid var(--color-border); background: var(--color-white);
  width: 34px; height: 34px; border-radius: 4px; cursor: pointer; color: var(--color-ink-soft); font-weight: 600;
}
.pagination button[aria-current="true"] { background: var(--color-ink); color: #fff; border-color: var(--color-ink); }

/* ---------- Sidebar ---------- */
.sidebar-box {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-3);
  margin-bottom: var(--space-3);
  background: var(--color-white);
}
.sidebar-box h2 {
  font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--color-muted); margin-bottom: var(--space-2); font-weight: 700;
}
.sidebar-search { display: flex; gap: 0.4rem; }
.sidebar-search input {
  flex: 1; padding: 0.55rem 0.7rem; border: 1px solid var(--color-border); border-radius: 4px;
  font-family: inherit; font-size: 0.9rem;
}
.sidebar-search button {
  border: 1px solid var(--color-ink); background: var(--color-ink); color: #fff;
  border-radius: 4px; padding: 0 0.8rem; cursor: pointer;
}
.sidebar-list { list-style: none; display: flex; flex-direction: column; gap: 0.55rem; }
.sidebar-list a { color: var(--color-ink-soft); font-size: 0.9rem; }
.sidebar-list a:hover { color: var(--color-ink); }
.sidebar-list .chip-btn {
  background: none; border: none; text-align: left; padding: 0; cursor: pointer;
  color: var(--color-ink-soft); font-size: 0.9rem; font-family: inherit;
}
.sidebar-list .chip-btn:hover { color: var(--color-ink); text-decoration: underline; }
.sidebar-list .chip-btn[aria-pressed="true"] { color: var(--color-ink); font-weight: 700; }
.sidebar-count { color: var(--color-muted); font-size: 0.8rem; }

/* ---------- Newsletter ---------- */
.newsletter {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-4);
  align-items: center;
}
.newsletter h2 { font-size: 1.3rem; text-transform: none; }
.newsletter p { color: var(--color-ink-soft); }
.newsletter-form { display: flex; flex-direction: column; gap: var(--space-2); }
.newsletter-form .field-row { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.newsletter-form input[type="text"], .newsletter-form input[type="email"] {
  flex: 1; min-width: 160px; padding: 0.7rem 1rem; border-radius: 4px;
  border: 1px solid var(--color-border); background: #fff; color: var(--color-ink);
  font-family: inherit; font-size: 0.9rem;
}
.newsletter-consent { display: flex; align-items: flex-start; gap: 0.5rem; font-size: 0.8rem; color: var(--color-ink-soft); }
.newsletter-consent input { margin-top: 3px; }
.newsletter-note { font-size: 0.78rem; color: var(--color-muted); }
.form-success {
  display: none; background: #eef4ee; color: #2f5c37;
  padding: 0.7rem 1rem; border-radius: 4px; font-size: 0.88rem;
}
.form-success.is-visible { display: block; }
@media (max-width: 800px) { .newsletter { grid-template-columns: 1fr; padding: var(--space-3); } }

/* ---------- Artigo individual ---------- */
.article-hero { border-bottom: 1px solid var(--color-border); padding: var(--space-4) 0 var(--space-3); }
.breadcrumbs { font-size: 0.8rem; color: var(--color-muted); margin-bottom: var(--space-2); }
.breadcrumbs a { color: var(--color-muted); }
.article-hero h1 { font-size: clamp(1.6rem, 3.6vw, 2.1rem); margin: var(--space-1) 0 var(--space-2); max-width: 46ch; }
.article-meta { display: flex; align-items: center; gap: 0.6rem; color: var(--color-muted); font-size: 0.85rem; flex-wrap: wrap; }
.article-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--color-muted); }
.article-cover { margin: var(--space-3) 0 0; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--color-border); }

.article-layout { display: grid; grid-template-columns: 220px 1fr; gap: var(--space-5); align-items: start; padding-top: var(--space-4); padding-bottom: var(--space-4); }
@media (max-width: 900px) { .article-layout { grid-template-columns: 1fr; } }

.toc { position: sticky; top: 90px; background: var(--color-panel); border: 1px solid var(--color-border); border-radius: var(--radius); padding: var(--space-2); }
.toc h2 { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-muted); margin-bottom: 0.6rem; }
.toc ol { list-style: none; display: flex; flex-direction: column; gap: 0.45rem; }
.toc a { color: var(--color-ink-soft); font-size: 0.85rem; }
.toc a:hover { color: var(--color-ink); }
@media (max-width: 900px) { .toc { position: static; } }

.article-body h2 { font-size: 1.3rem; margin: var(--space-4) 0 var(--space-2); scroll-margin-top: 100px; }
.article-body h3 { font-size: 1.05rem; margin: var(--space-3) 0 var(--space-1); scroll-margin-top: 100px; }
.article-body p { margin-bottom: var(--space-2); color: var(--color-ink-soft); }
.article-body ul, .article-body ol { margin: 0 0 var(--space-2) 1.3rem; color: var(--color-ink-soft); }
.article-body li { margin-bottom: 0.4rem; }
.article-body blockquote {
  border-left: 3px solid var(--color-ink); padding: 0.4rem 0 0.4rem 1rem;
  color: var(--color-ink); font-style: italic; margin: var(--space-3) 0;
}
.legal-note {
  background: var(--color-panel); border: 1px solid var(--color-border); border-radius: var(--radius);
  padding: var(--space-3); font-size: 0.88rem; color: var(--color-ink-soft); margin: var(--space-4) 0;
}
.legal-note strong { color: var(--color-ink); }

.article-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; padding-top: var(--space-3); margin-top: var(--space-3); border-top: 1px solid var(--color-border); }
.article-tags-label { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; color: var(--color-muted); width: 100%; margin-bottom: 0.3rem; }

.share-block { display: flex; align-items: center; gap: 0.6rem; padding-top: var(--space-3); margin-top: var(--space-2); flex-wrap: wrap; }
.share-label { font-size: 0.8rem; color: var(--color-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.02em; }
.share-btn {
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--color-border);
  background: var(--color-white); display: flex; align-items: center; justify-content: center;
  color: var(--color-ink); cursor: pointer;
}
.share-btn:hover { background: var(--color-ink); color: #fff; border-color: var(--color-ink); }

.related { margin-top: var(--space-2); }
.mini-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}
@media (max-width: 800px) { .mini-grid { grid-template-columns: 1fr; } }
.mini-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-white);
  display: flex;
  flex-direction: column;
}
.mini-card-media { aspect-ratio: 16/10; background: var(--color-panel); overflow: hidden; }
.mini-card-media img { width: 100%; height: 100%; object-fit: cover; }
.mini-card-body { padding: var(--space-2) var(--space-3) var(--space-3); display: flex; flex-direction: column; gap: 0.5rem; flex: 1; }
.mini-card-date { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; color: var(--color-muted); }
.mini-card-title { font-size: 1rem; }
.mini-card-title a { color: var(--color-ink); }
.mini-card-title a:hover { color: #000; text-decoration: none; }
.mini-card-excerpt { color: var(--color-ink-soft); font-size: 0.88rem; flex: 1; }

/* ---------- Formulários genéricos (contato) ---------- */
.form-card { border: 1px solid var(--color-border); border-radius: var(--radius); padding: var(--space-4); background: var(--color-white); }
.form-field { margin-bottom: var(--space-3); }
.form-field label { display: block; font-weight: 700; font-size: 0.85rem; color: var(--color-ink); margin-bottom: 0.4rem; }
.form-field input, .form-field textarea {
  width: 100%; padding: 0.7rem 1rem; border: 1px solid var(--color-border); border-radius: 4px;
  font-family: inherit; font-size: 0.9rem; background: var(--color-white);
}
.form-field input:focus, .form-field textarea:focus { outline: 2px solid var(--color-ink); outline-offset: 1px; }
.form-hint { font-size: 0.78rem; color: var(--color-muted); margin-top: 0.3rem; }

/* ---------- Página "sobre" / conteúdo simples ---------- */
.prose { max-width: 68ch; }
.prose h1 { font-size: 1.8rem; margin-bottom: var(--space-2); text-transform: none; }
.prose h2 { font-size: 1.15rem; margin: var(--space-4) 0 var(--space-2); text-transform: uppercase; letter-spacing: 0.02em; }
.prose p { margin-bottom: var(--space-2); color: var(--color-ink-soft); }
.prose ul { margin: 0 0 var(--space-2) 1.3rem; color: var(--color-ink-soft); }

.avatar-block { display: flex; gap: var(--space-3); align-items: center; margin-bottom: var(--space-4); }
.avatar-circle {
  width: 76px; height: 76px; border-radius: 50%; background: var(--color-panel);
  border: 1px solid var(--color-border); color: var(--color-ink);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; font-weight: 800; flex-shrink: 0;
}
.contact-channels { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; margin: var(--space-2) 0 var(--space-3); }
.contact-channels li { color: var(--color-ink-soft); font-size: 0.95rem; }
.contact-channels strong { color: var(--color-ink); }

/* ---------- Social links ---------- */
.social-links { display: flex; gap: 0.6rem; }
.social-links a {
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--color-border);
  display: flex; align-items: center; justify-content: center; color: var(--color-ink);
}
.social-links a:hover { background: var(--color-ink); color: #fff; border-color: var(--color-ink); text-decoration: none; }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-panel); color: var(--color-ink-soft); margin-top: var(--space-6); border-top: 1px solid var(--color-border); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: var(--space-4); padding-top: var(--space-5); padding-bottom: var(--space-3); }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h3 { color: var(--color-ink); font-size: 0.85rem; margin-bottom: var(--space-2); text-transform: uppercase; letter-spacing: 0.02em; }
.footer-brand { font-size: 1.05rem; font-weight: 800; color: var(--color-ink); margin-bottom: var(--space-1); display: block; }
.footer-tagline { color: var(--color-muted); font-size: 0.85rem; max-width: 32ch; margin-bottom: var(--space-2); }
.footer-grid ul { list-style: none; display: flex; flex-direction: column; gap: 0.55rem; }
.footer-grid a { color: var(--color-ink-soft); font-size: 0.85rem; }
.footer-grid a:hover { color: var(--color-ink); }
.footer-legal {
  border-top: 1px solid var(--color-border); padding-top: var(--space-3); padding-bottom: var(--space-3); font-size: 0.78rem; color: var(--color-muted);
  display: flex; justify-content: space-between; gap: var(--space-2); flex-wrap: wrap;
}
.footer-disclaimer { background: #f2f2f2; border-top: 1px solid var(--color-border); padding-top: var(--space-2); padding-bottom: var(--space-2); font-size: 0.76rem; color: var(--color-muted); text-align: center; }

/* ---------- Utilitários ---------- */
.text-center { text-align: center; }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }