/* ==================================================================
   blog.css — estilos das páginas do blog servidas pelas Pages Functions
   (functions/blog/*). Espelha o design system de src/styles/global.css
   com as mesmas variáveis e nomes de classe, para que a listagem
   dinâmica e a página estática fiquem visualmente idênticas.
   ================================================================== */

:root {
  --font-sans:
    ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, "Noto Sans", sans-serif;

  --color-brand-50: #eef2ff;
  --color-brand-100: #e0e7ff;
  --color-brand-200: #c7d2fe;
  --color-brand-300: #a5b4fc;
  --color-brand-400: #818cf8;
  --color-brand-500: #6366f1;
  --color-brand-600: #4f46e5;
  --color-brand-700: #4338ca;
  --color-brand-800: #3730a3;

  --color-ink-950: #0b1120;
  --color-ink-900: #0f172a;
  --color-ink-800: #1e293b;
  --color-ink-700: #334155;
  --color-ink-600: #475569;
  --color-ink-500: #64748b;
  --color-ink-400: #94a3b8;
  --color-ink-300: #cbd5e1;

  --color-line: #e2e8f0;
  --color-surface: #f5f7fb;

  --shadow-card:
    0 1px 2px rgba(15, 23, 42, 0.04), 0 12px 28px -18px rgba(15, 23, 42, 0.35);
}

/* base ------------------------------------------------------------ */

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

body {
  margin: 0;
  background-color: var(--color-surface);
  color: var(--color-ink-900);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

h1,
h2,
h3,
h4 {
  line-height: 1.22;
  letter-spacing: -0.021em;
  font-weight: 700;
  color: var(--color-ink-950);
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

a {
  color: var(--color-brand-700);
}

main {
  flex: 1;
}

:focus-visible {
  outline: 3px solid var(--color-brand-600);
  outline-offset: 2px;
  border-radius: 4px;
}

/* layout ----------------------------------------------------------- */

.container-page {
  width: 100%;
  max-width: 76rem;
  margin-inline: auto;
  padding-inline: 1rem;
}

@media (min-width: 48rem) {
  .container-page {
    padding-inline: 1.5rem;
  }
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1rem;
  background-color: var(--color-brand-700);
  color: #fff;
  font-weight: 700;
  border-radius: 0 0 0.5rem 0;
}

.skip-link:focus {
  left: 0;
}

/* header ----------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-line);
}

.site-header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  padding-block: 0.75rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  border-radius: 0.5rem;
  text-decoration: none;
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.75rem;
  background-color: var(--color-brand-600);
  color: #fff;
}

.brand-name {
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-ink-950);
}

.brand-accent {
  color: var(--color-brand-600);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}

.site-nav a {
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-ink-600);
  text-decoration: none;
}

.site-nav a:hover {
  background-color: var(--color-brand-50);
  color: var(--color-brand-700);
}

.site-nav a[aria-current="page"] {
  color: var(--color-brand-700);
}

/* footer ----------------------------------------------------------- */

.site-footer {
  margin-top: 4rem;
  background-color: #fff;
  border-top: 1px solid var(--color-line);
}

.site-footer .container-page {
  padding-block: 2.5rem;
}

.footer-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 40rem) {
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 64rem) {
  .footer-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.footer-title {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-ink-900);
  margin: 0 0 0.75rem;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.footer-links a {
  color: var(--color-ink-600);
  font-weight: 500;
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--color-brand-700);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.divider {
  border: 0;
  border-top: 1px solid var(--color-line);
  margin-block: 2rem;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--color-ink-700);
}

@media (min-width: 48rem) {
  .footer-bottom {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.footer-bottom p {
  margin: 0;
}

.footer-disclaimer {
  margin-top: 1rem;
  max-width: 48rem;
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--color-ink-400);
}

/* breadcrumbs ------------------------------------------------------- */

.crumbs {
  padding-top: 1rem;
}

.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.375rem 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.8125rem;
}

.crumbs li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-ink-500);
}

.crumbs li + li::before {
  content: "/";
  color: var(--color-ink-300);
}

.crumbs a {
  color: var(--color-ink-500);
  text-decoration: none;
}

.crumbs a:hover {
  color: var(--color-brand-700);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.crumbs [aria-current="page"] {
  color: var(--color-ink-800);
  font-weight: 600;
}

/* shared components -------------------------------------------------- */

.card {
  background-color: #fff;
  border: 1px solid var(--color-line);
  border-radius: 1rem;
  box-shadow: var(--shadow-card);
}

.card-pad {
  padding: 1.25rem;
}

@media (min-width: 48rem) {
  .card-pad {
    padding: 1.75rem;
  }
}

.section-title {
  font-size: 1.375rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
}

.lead {
  font-size: 1.0625rem;
  color: var(--color-ink-600);
}

.text-muted {
  color: var(--color-ink-600);
  font-size: 0.9375rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  border-radius: 999px;
  background-color: var(--color-brand-50);
  border: 1px solid var(--color-brand-200);
  color: var(--color-brand-800);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 3.25rem;
  padding: 0.75rem 1.5rem;
  background-color: var(--color-brand-600);
  color: #fff;
  font-size: 1.0625rem;
  font-weight: 700;
  border: 1px solid transparent;
  border-radius: 0.75rem;
  text-decoration: none;
}

.btn-primary:hover {
  background-color: var(--color-brand-700);
}

/* blog listing ------------------------------------------------------- */

.blog-page,
.article-page {
  padding-bottom: 3rem;
}

.blog-header {
  margin-block: 1.5rem 2rem;
}

.blog-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0 0 0.75rem;
}

.blog-header .lead {
  margin: 0;
  max-width: 46rem;
}

.post-list {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.post-card {
  background-color: #fff;
  border: 1px solid var(--color-line);
  border-radius: 1rem;
  box-shadow: var(--shadow-card);
  padding: 1.25rem 1.5rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.post-card:hover {
  border-color: var(--color-brand-300);
  transform: translateY(-2px);
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-ink-500);
}

.post-meta time {
  font-variant-numeric: tabular-nums;
}

.post-meta-sep {
  color: var(--color-ink-300);
}

.post-card-title {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}

@media (min-width: 48rem) {
  .post-card-title {
    font-size: 1.375rem;
  }
}

.post-card-title a {
  color: var(--color-ink-950);
  text-decoration: none;
}

.post-card-title a:hover {
  color: var(--color-brand-700);
}

.post-card-excerpt {
  margin: 0 0 0.75rem;
  color: var(--color-ink-600);
  font-size: 0.975rem;
}

.post-card-link {
  font-size: 0.9375rem;
  font-weight: 700;
  text-decoration: none;
}

.post-card-link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.empty-state {
  background-color: #fff;
  border: 1px dashed var(--color-brand-300);
  border-radius: 1rem;
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--color-ink-600);
  margin-bottom: 2.5rem;
}

.empty-state-title {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-ink-900);
}

.related-box {
  margin-top: 1rem;
}

.related-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
}

.related-list li {
  border: 1px solid var(--color-line);
  border-radius: 0.75rem;
  padding: 0.875rem 1rem;
}

.related-list a {
  font-weight: 700;
  text-decoration: none;
}

.related-list a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* article ------------------------------------------------------------- */

.article-header {
  margin-block: 1.5rem 1.75rem;
  border-bottom: 1px solid var(--color-line);
  padding-bottom: 1.5rem;
}

.article-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0 0 0.75rem;
}

.article-header .lead {
  margin: 0;
  max-width: 48rem;
}

.prose-basic > * + * {
  margin-top: 1rem;
}

.prose-basic h2 {
  font-size: 1.375rem;
  margin-top: 2.25rem;
}

.prose-basic h3 {
  font-size: 1.125rem;
  margin-top: 1.75rem;
}

.prose-basic p {
  max-width: 48rem;
  color: var(--color-ink-800);
}

.prose-basic ul,
.prose-basic ol {
  padding-left: 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  color: var(--color-ink-700);
  max-width: 48rem;
}

.prose-basic li::marker {
  color: var(--color-brand-500);
  font-weight: 700;
}

.prose-basic a {
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1.5px;
}

.prose-basic a:hover {
  color: var(--color-brand-800);
}

.prose-basic strong {
  color: var(--color-ink-900);
}

.prose-basic blockquote {
  margin: 1.5rem 0;
  padding: 0.875rem 1.25rem;
  background-color: #f8fafc;
  border-left: 3px solid var(--color-brand-400);
  border-radius: 0 0.5rem 0.5rem 0;
  color: var(--color-ink-700);
}

.prose-basic pre {
  padding: 1rem;
  background-color: var(--color-ink-900);
  color: #e2e8f0;
  border-radius: 0.75rem;
  overflow-x: auto;
  font-size: 0.875rem;
}

.prose-basic code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
  background-color: #eef1f7;
  padding: 0.1em 0.35em;
  border-radius: 0.3em;
}

.prose-basic pre code {
  background: none;
  padding: 0;
}

.prose-basic table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  margin-block: 1.5rem;
}

.prose-basic th,
.prose-basic td {
  border: 1px solid var(--color-line);
  padding: 0.625rem 0.75rem;
  text-align: left;
}

.prose-basic th {
  background-color: #f8fafc;
  color: var(--color-ink-900);
  font-weight: 700;
}

.prose-basic hr {
  border: 0;
  border-top: 1px solid var(--color-line);
  margin-block: 2rem;
}

.article-disclaimer {
  margin-top: 2.5rem;
  padding: 1rem 1.25rem;
  background-color: #f8fafc;
  border: 1px solid var(--color-line);
  border-radius: 0.75rem;
  font-size: 0.875rem;
  color: var(--color-ink-600);
  max-width: 48rem;
}

/* faq ---------------------------------------------------------------- */

.faq-box {
  margin-top: 2.5rem;
}

.faq-box > h2 {
  font-size: 1.375rem;
  margin-bottom: 1rem;
}

.faq-item {
  background-color: #fff;
  border: 1px solid var(--color-line);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
}

.faq-item h3 {
  font-size: 1.0625rem;
  margin: 0 0 0.5rem;
}

.faq-item p {
  margin: 0;
  color: var(--color-ink-700);
  font-size: 0.975rem;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .post-card {
    transition: none;
  }

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