/* ─────────────────────────────────────────────────────────────
   css/blog.css — Estilos compartilhados por /blog/*
   Tema: continuação do landing.css. Foco em leitura longa.
   ───────────────────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #0A0A0F; --surface: #111118; --surface2: #16161F;
  --border: rgba(255,255,255,0.07); --border-hover: rgba(255,255,255,0.15);
  --accent: #7C6FF7; --accent2: #4FC9A0;
  --text: #F0EEF8; --muted: #8B899E; --muted2: #5A5870;
  --serif: 'DM Serif Display', Georgia, serif;
  --sans: 'Outfit', system-ui, sans-serif;
  --mono: 'Space Mono', monospace;
}
:root[data-theme="light"] {
  --bg: #F4F2F8; --surface: #EBE8F0; --surface2: #E2DEE9;
  --border: rgba(20,15,35,0.10); --border-hover: rgba(20,15,35,0.20);
  --text: #1A1525; --muted: #6A6478; --muted2: #8B8298;
}
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

/* Header/nav minimal */
.blog-topnav {
  padding: 1.25rem 5%;
  border-bottom: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  position: sticky; top: 0; z-index: 10;
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(12px);
}
:root[data-theme="light"] .blog-topnav { background: rgba(244,242,248,0.9); }
.blog-topnav .brand {
  font-family: var(--serif);
  font-size: 1.25rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.blog-topnav .brand em { color: var(--accent); font-style: italic; }
.blog-topnav nav {
  display: flex; gap: 1.5rem; align-items: center;
  font-family: var(--mono); font-size: 0.75rem;
  letter-spacing: 0.06em; text-transform: uppercase;
}
.blog-topnav nav a {
  color: var(--muted); text-decoration: none;
  transition: color 0.15s;
}
.blog-topnav nav a:hover { color: var(--accent); }
.blog-topnav nav a.cta {
  padding: 0.5rem 0.9rem;
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  letter-spacing: 0.04em;
}
.blog-topnav nav a.cta:hover { opacity: 0.9; color: #fff; }
@media (max-width: 720px) {
  .blog-topnav nav { gap: 0.75rem; }
  .blog-topnav nav a:not(.cta) { display: none; }
}

/* Article layout */
.blog-container {
  max-width: 760px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}
.blog-eyebrow {
  font-family: var(--mono); font-size: 0.7rem;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.blog-title {
  font-family: var(--serif);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  line-height: 1.1; letter-spacing: -0.02em;
  margin-bottom: 1rem;
  color: var(--text);
}
.blog-title em { color: var(--accent); font-style: italic; }
.blog-meta {
  font-family: var(--mono); font-size: 0.72rem;
  color: var(--muted); letter-spacing: 0.04em;
  margin-bottom: 2.5rem; padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.blog-content { font-size: 1.05rem; line-height: 1.75; }
.blog-content p { margin-bottom: 1.15rem; color: var(--text); }
.blog-content p + p { margin-top: 0; }
.blog-content h2 {
  font-family: var(--serif); font-size: 1.8rem;
  line-height: 1.2; letter-spacing: -0.01em;
  margin: 2.5rem 0 1rem;
  color: var(--text);
}
.blog-content h3 {
  font-family: var(--sans); font-weight: 700;
  font-size: 1.2rem; margin: 1.75rem 0 0.6rem;
  color: var(--text);
}
.blog-content ul, .blog-content ol {
  margin: 0 0 1.15rem 1.5rem; padding: 0;
}
.blog-content li { margin-bottom: 0.5rem; }
.blog-content strong { color: var(--text); font-weight: 600; }
.blog-content em { color: var(--muted); font-style: italic; }
.blog-content a {
  color: var(--accent); text-decoration: underline;
  text-decoration-color: rgba(124,111,247,0.35);
  text-underline-offset: 3px;
}
.blog-content a:hover { text-decoration-color: var(--accent); }
.blog-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.92rem;
}
.blog-content th, .blog-content td {
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.blog-content th {
  font-weight: 600;
  color: var(--text);
  background: var(--surface);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.blog-content blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.5rem 0 0.5rem 1.25rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--muted);
}

/* CTA embutido */
.blog-cta {
  margin: 2rem 0;
  padding: 1.5rem 1.75rem;
  background: linear-gradient(135deg, rgba(124,111,247,0.1), rgba(79,201,160,0.05));
  border: 1px solid rgba(124,111,247,0.25);
  border-radius: 12px;
  display: flex; gap: 1rem; align-items: center;
  flex-wrap: wrap;
}
.blog-cta-text {
  flex: 1; min-width: 240px;
  font-size: 0.95rem; color: var(--text);
}
.blog-cta-text strong { font-family: var(--serif); font-size: 1.1rem; }
.blog-cta-btn {
  padding: 0.75rem 1.5rem;
  background: var(--accent); color: #fff;
  border-radius: 8px;
  text-decoration: none !important;
  font-weight: 700; font-size: 0.9rem;
  transition: opacity 0.15s;
}
.blog-cta-btn:hover { opacity: 0.9; color: #fff !important; }

/* Referências */
.blog-refs {
  margin-top: 3rem; padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.blog-refs h3 {
  font-family: var(--mono); font-size: 0.75rem;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.blog-refs ol {
  list-style: decimal;
  padding-left: 1.5rem;
  font-size: 0.85rem;
  color: var(--muted);
}
.blog-refs li {
  margin-bottom: 0.6rem;
  line-height: 1.55;
}

/* Voltar ao topo do blog */
.blog-back {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: var(--mono); font-size: 0.72rem;
  color: var(--muted); text-decoration: none;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 2rem;
  transition: color 0.15s, border-color 0.15s;
}
.blog-back:hover { color: var(--accent); border-color: var(--accent); }

/* Listagem do blog (index) */
.blog-index-header {
  text-align: center;
  padding: 4rem 1.5rem 2rem;
  max-width: 720px;
  margin: 0 auto;
}
.blog-index-title {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.05; letter-spacing: -0.025em;
  margin-bottom: 1rem;
}
.blog-index-title em { color: var(--accent); font-style: italic; }
.blog-index-sub {
  font-size: 1.05rem; color: var(--muted);
  line-height: 1.6;
}
.blog-list {
  max-width: 800px; margin: 0 auto;
  padding: 2rem 1.5rem 5rem;
  display: flex; flex-direction: column; gap: 1.25rem;
}
.blog-card {
  padding: 1.75rem 1.85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: block;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}
.blog-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.blog-card-tag {
  font-family: var(--mono); font-size: 0.62rem;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
}
.blog-card-title {
  font-family: var(--serif); font-size: 1.5rem;
  line-height: 1.2; letter-spacing: -0.015em;
  color: var(--text);
  margin-bottom: 0.55rem;
}
.blog-card-desc {
  font-size: 0.92rem; color: var(--muted);
  line-height: 1.55;
}

/* Footer */
.blog-footer {
  padding: 2.5rem 5%;
  border-top: 1px solid var(--border);
  text-align: center;
  font-family: var(--mono); font-size: 0.72rem;
  color: var(--muted); letter-spacing: 0.05em;
}
.blog-footer a { color: var(--accent); text-decoration: none; }