:root {
  --bg: #faf8f5;
  --surface: #ffffff;
  --text: #1d1b19;
  --muted: #6b665f;
  --border: #e6e1da;
  --accent: #b5452f;
  --accent-soft: #f6e7e2;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151413;
    --surface: #1e1d1b;
    --text: #f1eeea;
    --muted: #a59f97;
    --border: #2f2d2a;
    --accent: #e5775f;
    --accent-soft: #2e201c;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px;
}

header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
  text-decoration: none;
}

.brand img { width: 32px; height: 32px; flex: none; }

nav {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 14px;
}

nav a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--text); }

.lang-toggle {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  border-radius: 999px;
  padding: 4px 10px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

main { padding: 40px 0 56px; }

h1 { font-size: 32px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 21px; margin: 40px 0 12px; }
h3 { font-size: 17px; margin: 24px 0 6px; }

.lead { color: var(--muted); font-size: 18px; margin: 0 0 28px; }
.updated { color: var(--muted); font-size: 14px; }

a { color: var(--accent); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
}

.contact {
  background: var(--accent-soft);
  border-color: transparent;
}

.contact p { margin: 0 0 12px; }

.button {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 10px;
  word-break: break-all;
}

details {
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}

details summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

details summary::-webkit-details-marker { display: none; }
details summary::before { content: "+ "; color: var(--accent); }
details[open] summary::before { content: "− "; }
details p { margin: 8px 0 0; color: var(--muted); }

footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
  padding: 20px 0 32px;
}

footer .wrap { display: flex; flex-wrap: wrap; gap: 6px 16px; justify-content: space-between; }
footer a { color: var(--muted); }

/* Language switching: show only the active language */
html[lang="es"] [lang="en"]:not(html),
html[lang="en"] [lang="es"]:not(html) { display: none !important; }

@media (max-width: 520px) {
  h1 { font-size: 26px; }
  header .wrap { flex-wrap: wrap; }
}