/* R3 Explica — páginas públicas (PHP). Paleta igual ao site institucional
   (Next.js), reescrita aqui porque as duas aplicações não compartilham
   build de CSS. */
:root {
  --ink: #05070c;
  --navy: #0a1432;
  --surface: #171b24;
  --copper: #d26e32;
  --copper-soft: #e08a52;
  --warm-white: #f4f1ea;
  --silver: #c7cdd8;
  --slate: #8791a4;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Inter, sans-serif;
  background: var(--ink);
  color: var(--warm-white);
  line-height: 1.6;
}
a { color: var(--copper-soft); }
.r3x-container { max-width: 960px; margin: 0 auto; padding: 0 1.5rem; }

.r3x-header {
  border-bottom: 1px solid rgba(199, 205, 216, 0.12);
  padding: 1.25rem 0;
}
.r3x-header .r3x-container { display: flex; justify-content: space-between; align-items: center; }
.r3x-header a { text-decoration: none; color: var(--warm-white); font-weight: 700; }
.r3x-header nav a { color: var(--silver); font-weight: 400; margin-left: 1.5rem; font-size: 0.9375rem; }

.r3x-hero { padding: 3rem 0 2rem; }
.r3x-eyebrow { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.75rem; color: var(--copper-soft); }
.r3x-hero h1 { font-size: 2rem; margin: 0.5rem 0; }

.r3x-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.5rem; padding: 2rem 0; }
.r3x-card {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid rgba(199, 205, 216, 0.15);
  border-radius: 16px;
  overflow: hidden;
  background: var(--surface);
}
.r3x-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }
.r3x-card-body { padding: 1.25rem; }
.r3x-card-cat { color: var(--copper-soft); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; }
.r3x-card h2 { font-size: 1.125rem; margin: 0.5rem 0; }
.r3x-card p { color: var(--slate); font-size: 0.875rem; margin: 0; }
.r3x-card-meta { color: var(--slate); font-size: 0.8125rem; margin-top: 0.75rem; }

.r3x-empty { padding: 3rem 0; text-align: center; color: var(--slate); }

.r3x-article { padding: 2rem 0 4rem; max-width: 720px; margin: 0 auto; }
.r3x-article h1 { font-size: 2.25rem; line-height: 1.2; }
.r3x-article-meta { color: var(--slate); font-size: 0.875rem; margin-bottom: 1.5rem; }
.r3x-article img.r3x-cover { width: 100%; border-radius: 16px; margin: 1.5rem 0; }
.r3x-article-body h2 { margin-top: 2rem; }
.r3x-article-body blockquote {
  border-left: 3px solid var(--copper);
  margin: 1.5rem 0;
  padding: 0.5rem 0 0.5rem 1.25rem;
  color: var(--silver);
  font-style: italic;
}
.r3x-article-body table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; }
.r3x-article-body th, .r3x-article-body td { border: 1px solid rgba(199,205,216,0.2); padding: 0.5rem 0.75rem; text-align: left; }

.r3x-breadcrumbs { font-size: 0.8125rem; color: var(--slate); margin-bottom: 1rem; }
.r3x-breadcrumbs a { color: var(--slate); }

.r3x-cta {
  margin-top: 3rem;
  padding: 1.5rem;
  border-radius: 16px;
  background: var(--surface);
  text-align: center;
}
.r3x-cta a {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  background: var(--copper);
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
}

.r3x-pagination { display: flex; gap: 0.75rem; justify-content: center; padding: 2rem 0; }
.r3x-pagination a, .r3x-pagination span {
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
  border: 1px solid rgba(199,205,216,0.2);
  text-decoration: none;
  color: var(--silver);
}
.r3x-pagination .is-current { background: var(--copper); color: var(--ink); border-color: var(--copper); }

.r3x-footer { border-top: 1px solid rgba(199,205,216,0.12); padding: 2rem 0; color: var(--slate); font-size: 0.8125rem; }
.r3x-fixture-badge {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: rgba(210,110,50,0.2);
  color: var(--copper-soft);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}