:root {
  --paper: #fbfbf9;
  --surface: #ffffff;
  --ink: #1a1e22;
  --muted: #5c6670;
  --line: #e4e6e0;
  --accent: #0f6e62;
  --accent-ink: #0b564d;
  --focus: #0f6e62;
  --maxw: 720px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #14181c;
    --surface: #1b2126;
    --ink: #e8ebe9;
    --muted: #9aa4ad;
    --line: #2a3138;
    --accent: #54c3b3;
    --accent-ink: #7fd6c9;
    --focus: #54c3b3;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  font-size: 18px;
}
a { color: var(--accent-ink); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}
.skip-link {
  position: absolute;
  left: -999px;
  background: var(--accent);
  color: #fff;
  padding: 8px 14px;
  border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; top: 0; z-index: 10; }

/* Cabecera y navegacion */
.site-header { border-bottom: 1px solid var(--line); background: var(--surface); }
.site-nav {
  max-width: var(--maxw); margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.brand {
  font-weight: 700; text-decoration: none; color: var(--accent);
  font-family: system-ui, sans-serif; letter-spacing: .01em;
}
.nav-links {
  list-style: none; display: flex; gap: 18px; margin: 0; padding: 0;
  font-family: system-ui, sans-serif; font-size: 15px;
}
.nav-links a { text-decoration: none; color: var(--muted); }
.nav-links a:hover { color: var(--ink); }

.site-main { max-width: var(--maxw); margin: 0 auto; padding: 36px 20px; }
.site-footer {
  border-top: 1px solid var(--line); color: var(--muted);
  font-family: system-ui, sans-serif; font-size: 14px;
}
.site-footer nav {
  max-width: var(--maxw); margin: 0 auto; padding: 18px 20px 4px;
  display: flex; gap: 18px; flex-wrap: wrap;
}
.site-footer nav a { color: var(--muted); }
.site-footer p { max-width: var(--maxw); margin: 0 auto; padding: 4px 20px 24px; }

/* Titulos */
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 12px; }
h2 { font-size: 1.25rem; font-family: system-ui, sans-serif; margin: 28px 0 8px; }

/* Listado de entradas */
.entry-list { list-style: none; margin: 0; padding: 0; }
.entry-card {
  padding: 22px 0; border-bottom: 1px solid var(--line);
}
.entry-card .cat, .entry-category {
  font-family: system-ui, sans-serif; font-size: 12.5px; letter-spacing: .06em;
  text-transform: uppercase; color: var(--accent); margin: 0 0 6px;
}
.entry-card h3 { font-size: 1.3rem; margin: 0 0 8px; line-height: 1.25; }
.entry-card h3 a { text-decoration: none; color: var(--ink); }
.entry-card h3 a:hover { color: var(--accent-ink); }
.entry-card .why { color: var(--muted); margin: 6px 0; }
.entry-meta {
  font-family: system-ui, sans-serif; font-size: 13px; color: var(--muted);
  display: flex; gap: 14px; flex-wrap: wrap; margin-top: 8px;
}

/* Detalle de entrada */
.entry section { margin: 22px 0; }
.entry-citation {
  font-family: system-ui, sans-serif; font-size: 14px; color: var(--muted);
  border-top: 1px solid var(--line); margin-top: 28px; padding-top: 16px;
}

/* Filtros */
.filters {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: end;
  font-family: system-ui, sans-serif; margin: 6px 0 20px;
}
.filters label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.filters input, .filters select {
  font: inherit; font-family: system-ui, sans-serif; font-size: 15px;
  padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--surface); color: var(--ink);
}
.btn {
  font-family: system-ui, sans-serif; font-size: 15px; cursor: pointer;
  background: var(--accent); color: #fff; border: none; border-radius: 8px; padding: 9px 16px;
}
.btn:hover { background: var(--accent-ink); }

/* Paginacion */
.pagination {
  display: flex; gap: 16px; justify-content: center; align-items: center;
  font-family: system-ui, sans-serif; font-size: 15px; margin: 28px 0 0;
}

/* Estados */
.empty, .notice { color: var(--muted); font-family: system-ui, sans-serif; }
.notice { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; }

@media (max-width: 560px) {
  body { font-size: 17px; }
  .site-main { padding: 24px 16px; }
}