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

/* ── Tokens ───────────────────────────────────────────────────── */
:root {
  --ink:        #1a1a1a;
  --ink-soft:   #4a4a4a;
  --ink-muted:  #888;
  --surface:    #faf9f7;
  --surface-low:#f2f0ec;
  --border:     #e0ddd8;
  --accent:     #2d6a4f;
  --accent-hover:#1e4d38;
  --font:       'Georgia', 'Times New Roman', serif;
  --font-ui:    system-ui, -apple-system, sans-serif;
  --max-w:      680px;
  --radius:     6px;
}

/* ── Base ─────────────────────────────────────────────────────── */
html { font-size: 18px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--surface);
  color: var(--ink);
  line-height: 1.7;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }

/* ── Container ────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Header ───────────────────────────────────────────────────── */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
  background: var(--surface);
}

.header-inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.site-title {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-name {
  font-family: var(--font-ui);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.site-sub {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--ink-muted);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.header-cta {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
  font-weight: 500;
}
.header-cta:hover { color: var(--accent-hover); }

/* ── Main ─────────────────────────────────────────────────────── */
.site-main {
  flex: 1;
  padding: 48px 0 64px;
}

/* ── Home ─────────────────────────────────────────────────────── */
.home-intro {
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.home-intro h1 {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.home-intro p {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* ── Post list ────────────────────────────────────────────────── */
.post-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.post-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.post-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}

.post-link:hover .post-item-title {
  text-decoration: underline;
  text-underline-offset: 3px;
  color: var(--accent);
}

.post-version-badge {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  padding: 2px 7px;
  border-radius: 20px;
  white-space: nowrap;
  flex-shrink: 0;
}

.post-item-title {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.4;
}

.post-item-date {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--ink-muted);
}

.post-item-excerpt {
  font-size: 0.88rem;
  color: var(--ink-soft);
  line-height: 1.6;
}

/* ── Post ─────────────────────────────────────────────────────── */
.post-header {
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.post-version {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.post-title {
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.post-date {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--ink-muted);
  display: block;
}

.post-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.tag {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--ink-soft);
  background: var(--surface-low);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 20px;
}

/* ── Post intro ───────────────────────────────────────────────── */
.post-intro {
  background: var(--surface-low);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  margin-bottom: 36px;
  font-size: 0.92rem;
}

.post-intro > p {
  margin-bottom: 10px;
  color: var(--ink-soft);
  line-height: 1.65;
}

.post-intro > p:last-child { margin-bottom: 0; }

.o-que-e summary {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 6px;
  user-select: none;
}

.o-que-e summary::before {
  content: "▸";
  font-size: 0.7rem;
  transition: transform 0.15s;
}

.o-que-e[open] summary::before { transform: rotate(90deg); }

.o-que-e-body {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: var(--ink-soft);
  font-size: 0.88rem;
  line-height: 1.65;
}

.o-que-e-body a { color: var(--accent); }

/* ── Post sign-off ────────────────────────────────────────────── */
.post-signoff {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin: 36px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.post-signoff a {
  color: var(--ink-soft);
  font-weight: 600;
}

/* ── Post content ─────────────────────────────────────────────── */
.post-content h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 2em 0 0.6em;
  letter-spacing: -0.01em;
}

.post-content h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 1.6em 0 0.5em;
}

.post-content p { margin-bottom: 1.2em; }

.post-content ul, .post-content ol {
  margin: 0 0 1.2em 1.4em;
}

.post-content li { margin-bottom: 0.4em; }

.post-content strong { font-weight: 700; }

.post-content code {
  font-family: 'Menlo', 'Monaco', monospace;
  font-size: 0.82em;
  background: var(--surface-low);
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: 3px;
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2em 0;
}

.post-footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.back-link {
  font-family: var(--font-ui);
  font-size: 0.85rem;
}

/* ── Author card ──────────────────────────────────────────────── */
.author-card {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  background: var(--surface-low);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 24px;
}

.author-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.author-name {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink);
}

.author-bio {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--ink-muted);
}

.author-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.author-links a {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--ink-soft);
  text-decoration: none;
}

.author-links a:hover { color: var(--accent); }

/* ── Footer ───────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 0 32px;
  background: var(--surface-low);
}

.footer-convite {
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}

.footer-convite p {
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.7;
  margin-bottom: 16px;
}

.footer-convite p a { color: var(--accent); }

.footer-btn {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  padding: 8px 18px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.15s;
}
.footer-btn:hover { background: var(--accent-hover); color: #fff; }

.footer-social {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 16px;
}

.footer-social a {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--ink-soft);
  text-decoration: none;
}
.footer-social a:hover { color: var(--accent); }

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--ink-muted);
  margin-bottom: 10px;
}
.footer-meta a { color: var(--ink-muted); }
.footer-meta a:hover { color: var(--accent); }
.footer-meta span { opacity: 0.4; }

.footer-copy {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--ink-muted);
}

/* ── Mobile ───────────────────────────────────────────────────── */
@media (max-width: 480px) {
  html { font-size: 16px; }
  .site-main { padding: 32px 0 48px; }
  .post-title { font-size: 1.5rem; }
  .home-intro h1 { font-size: 1.35rem; }
}