body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  margin: 0;
  background: #f5f5f7;
  color: #111827;
}
.site-header, .site-footer {
  background: #111827;
  color: #f9fafb;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-header a { color: #e5e7eb; margin-right: 1rem; text-decoration: none; }
.site-header .logo { font-weight: 700; }
.content { max-width: 900px; margin: 2rem auto; padding: 0 1rem; }
.post-list { display: flex; flex-direction: column; gap: 1.5rem; }
.post-card {
  background: #fff;
  border-radius: 1rem;
  padding: 1.25rem 1.5rem;
  box-shadow: 0 10px 25px rgba(0,0,0,0.04);
}
.post-meta { font-size: 0.85rem; color: #6b7280; }
.form { display: flex; flex-direction: column; gap: 1rem; }
.form input, .form textarea, .form select {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border-radius: 0.6rem;
  border: 1px solid #d1d5db;
  font: inherit;
}
button[type="submit"] {
  padding: 0.7rem 1.3rem;
  border-radius: 999px;
  border: none;
  background: #111827;
  color: #f9fafb;
  font-weight: 600;
  cursor: pointer;
}
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th, .admin-table td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid #e5e7eb;
  text-align: left;
}