@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url("/assets/fonts/ibm-plex-sans-latin.woff2") format("woff2");
}

@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url("/assets/fonts/jetbrains-mono-latin.woff2") format("woff2");
}

:root {
  --void: #000000;
  --ink: #f2f5f2;
  --muted: rgba(242, 245, 242, 0.62);
  --neon: #39ff14;
  --cyan: #00d4ff;
  --focus: #c44dff;
  --line: rgba(242, 245, 242, 0.16);
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: dark;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--void);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(42% 36% at 18% 0%, rgba(0, 212, 255, 0.14), transparent 58%),
    radial-gradient(28% 28% at 88% 12%, rgba(57, 255, 20, 0.07), transparent 55%);
}

::selection { background: rgba(57, 255, 20, 0.35); color: #fff; }

a { color: var(--cyan); text-decoration: none; }
a:hover { color: #9eecff; }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.bar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  background: rgba(0, 0, 0, 0.82);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.bar-start {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-width: 0;
}

.home {
  color: var(--neon);
  text-transform: uppercase;
  font-weight: 600;
  flex: 0 0 auto;
}

.home:hover { color: #b8ffb8; }

.bar-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  color: var(--muted);
}

.bar-links a { color: var(--muted); }
.bar-links a:hover { color: var(--ink); }

.langs { color: var(--muted); flex: 0 0 auto; }
.langs button {
  appearance: none;
  border: 0;
  background: none;
  padding: 0;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  cursor: pointer;
}
.langs button[aria-pressed="true"] { color: var(--neon); }
.langs .sep { margin: 0 0.35rem; color: rgba(242, 245, 242, 0.28); }

.wrap {
  position: relative;
  z-index: 1;
  width: min(46rem, calc(100% - 2.5rem));
  margin: 0 auto;
  padding: 2.25rem 0 4rem;
}

.kicker {
  margin: 0 0 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

h1 {
  margin: 0 0 0.55rem;
  font-size: clamp(1.7rem, 4vw, 2.35rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.meta {
  margin: 0 0 1.6rem;
  color: var(--muted);
  font-size: 0.98rem;
}

.toc {
  margin: 0 0 2rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 2px;
}

.toc h2 {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.toc ol {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.toc li { margin: 0.28rem 0; }
.toc a { color: var(--ink); }
.toc a:hover { color: var(--cyan); }

.policy h2 {
  margin: 2.1rem 0 0.7rem;
  padding-top: 0.35rem;
  border-top: 1px solid var(--line);
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.policy h2:first-child {
  margin-top: 0;
  border-top: 0;
  padding-top: 0;
}

.policy p,
.policy li {
  color: rgba(242, 245, 242, 0.88);
  font-size: 1.02rem;
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
}

.policy p { margin: 0 0 0.9rem; }

.policy ul {
  margin: 0 0 0.95rem;
  padding-left: 1.2rem;
}

.policy li { margin: 0.35rem 0; }

.policy .note {
  color: var(--muted);
  font-size: 0.95rem;
}

.foot-nav {
  margin-top: 2.4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.lang-only { display: none; }
html[data-lang="en"] .lang-en { display: block; }
html[data-lang="es"] .lang-es { display: block; }
html[data-lang="en"] .lang-en-inline { display: inline; }
html[data-lang="es"] .lang-es-inline { display: inline; }

@media (max-width: 720px) {
  .bar {
    flex-wrap: wrap;
    row-gap: 0.55rem;
  }
  .bar-links { width: 100%; order: 3; }
  .wrap { width: min(46rem, calc(100% - 2rem)); padding-top: 1.6rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}