:root {
  --navy: #152733;
  --navy-soft: #1e3645;
  --text: #2d2d2d;
  --muted: #6b6b6b;
  --bg: #f7f8f9;
  --card: #ffffff;
  --border: #dde1e3;
  --link: #1a5f7a;
  --max-width: 720px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", Times, serif;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.lang-content {
  display: none;
}

html.lang-en #content-en,
html.lang-es #content-es,
html:not(.lang-en):not(.lang-es) #content-en {
  display: block;
}

.lang-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 100;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  background: rgba(21, 39, 51, 0.92);
  color: #fff;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(21, 39, 51, 0.28);
  backdrop-filter: blur(8px);
  transition: background 0.15s ease, transform 0.15s ease, border-color 0.15s ease;
}

.lang-toggle:hover {
  background: var(--navy-soft);
  border-color: rgba(255, 255, 255, 0.45);
}

.lang-toggle:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.lang-toggle:active {
  transform: scale(0.97);
}

.lang-toggle__icon {
  width: 1.05rem;
  height: 1.05rem;
  flex-shrink: 0;
}

.lang-toggle__label {
  min-width: 1.4rem;
  text-align: center;
}

.site-header {
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-soft) 100%);
  color: #fff;
  padding: 2.5rem 0 2rem;
  margin-bottom: 2rem;
}

.brand {
  margin: 0 0 0.5rem;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0.85;
}

.site-header h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  line-height: 1.2;
}

.updated {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.9rem;
  opacity: 0.8;
}

main {
  background: var(--card);
  padding: 1.75rem 1.5rem 2.5rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin-bottom: 2rem;
  box-shadow: 0 1px 2px rgba(21, 39, 51, 0.04);
}

.intro {
  margin-top: 0;
}

section {
  margin-top: 2rem;
  padding-top: 0.25rem;
}

h2 {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
  color: var(--navy);
  line-height: 1.3;
}

h3 {
  margin: 1.25rem 0 0.5rem;
  font-size: 1.05rem;
  color: var(--navy-soft);
}

p,
ul {
  margin: 0 0 0.85rem;
}

ul {
  padding-left: 1.25rem;
}

li {
  margin-bottom: 0.35rem;
}

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--navy);
}

.summary {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.95rem;
  margin-top: 1rem;
}

th,
td {
  text-align: left;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--border);
  vertical-align: top;
}

th {
  background: var(--bg);
  color: var(--navy);
  font-weight: 600;
}

.site-footer {
  padding: 1.5rem 0 2.5rem;
  color: var(--muted);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.85rem;
  text-align: center;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 480px) {
  main {
    padding: 1.25rem 1rem 2rem;
  }

  th,
  td {
    padding: 0.6rem 0.55rem;
    font-size: 0.85rem;
  }
}