/*
  css/estilos.css
  ---------------
  Todos los estilos del sitio viven en este único archivo.
  Para cambiar un color, edita las variables del bloque ":root" de abajo.
*/

:root {
  /* ---------- COLORES ---------- */
  --color-bg: #FAFAF8;
  --color-bg-raised: #F1F0EC;
  --color-text: #111827;
  --color-text-secondary: #6B7280;
  --color-accent: #3B82F6;
  --color-border: #E5E3DD;
  --color-code-bg: #101418;
  --color-code-text: #E5E7EB;

  /* ---------- TIPOGRAFÍA ---------- */
  /* Misma pareja que adroguett.com (el sitio oscuro), para que ambos sitios
     se sientan de la misma familia: Sora para texto, JetBrains Mono para
     todo lo técnico (nav, categorías, tags, fechas, código). */
  --font-sans: "Sora", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  /* ---------- LAYOUT ---------- */
  --content-width: 42rem;
  --page-width: 64rem;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.text-link {
  color: var(--color-accent);
  text-underline-offset: 3px;
  text-decoration: underline;
  text-decoration-color: rgba(59, 130, 246, 0.35);
}

.text-link:hover {
  text-decoration-color: var(--color-accent);
}

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 650;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

/* ---------- LAYOUT GENERAL ---------- */
.page {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.prose-width {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- HEADER ---------- */
.site-header {
  border-bottom: 1px solid transparent;
  background: transparent;
  position: sticky;
  top: 0;
  z-index: 20;
  transition: border-color 0.2s ease, background 0.2s ease, backdrop-filter 0.2s ease;
}

.site-header.scrolled {
  background: rgba(250, 250, 248, 0.85);
  backdrop-filter: blur(12px);
  border-color: var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 0;
}

.logo {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
  color: var(--color-text);
  flex-shrink: 0;
}

.logo-accent {
  color: var(--color-accent);
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.site-nav a:hover {
  color: var(--color-text);
}

.site-nav a[aria-current="page"] {
  color: var(--color-text);
  font-weight: 600;
}

.site-nav__external a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--color-accent);
  font-weight: 500;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
}

@media (max-width: 720px) {
  .nav-toggle { display: flex; }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
  }

  .site-nav.is-open { display: block; }

  .site-header:has(.site-nav.is-open) {
    background: var(--color-bg);
    border-color: var(--color-border);
  }

  .site-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0.5rem 1.5rem 1.25rem;
  }

  .site-nav li {
    width: 100%;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--color-border);
  }

  .site-nav li:last-child { border-bottom: none; }
}

/* ---------- FOOTER ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: 4rem;
  padding: 1.75rem 0;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer__logo {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.site-footer__copy {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.06em;
  opacity: 0.85;
}

.site-footer__links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer__links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.site-footer__links a:hover { color: var(--color-accent); }

.site-footer__back {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-accent);
}

.site-footer__back:hover { opacity: 0.7; }

@media (max-width: 640px) {
  .site-footer__inner { flex-direction: column; align-items: flex-start; }
}

/* ---------- HERO (portada) ---------- */
.hero {
  padding: 3.5rem 1.5rem 2.5rem;
  max-width: 44rem;
}

.hero h1 {
  font-size: 2.1rem;
  margin: 0 0 0.9rem;
}

.hero p {
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  max-width: 40ch;
}

/* ---------- SECCIONES DE PÁGINA ---------- */
.section {
  padding: 2.5rem 1.5rem;
  border-top: 1px solid var(--color-border);
}

.section h2 {
  font-size: 1.4rem;
  margin: 0 0 1.4rem;
}

.section__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.section__header h2 { margin: 0; }

.section--about p {
  max-width: 60ch;
  color: var(--color-text-secondary);
}

/* ---------- CATEGORÍAS (grilla en portada) ---------- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}

.category-card {
  background: var(--color-bg);
  padding: 1.5rem;
}

.category-card:hover { background: var(--color-bg-raised); }

.category-card h3 { margin: 0 0 0.4rem; font-size: 1.1rem; }

.category-card p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

@media (max-width: 640px) {
  .category-grid { grid-template-columns: 1fr; }
}

/* ---------- FILA DE ARTÍCULO (listados) ---------- */
.article-row {
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--color-border);
}

.article-row:first-child { padding-top: 0; }

.article-row__meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.article-row__category { color: var(--color-accent); font-weight: 500; }

.article-row__meta time::before {
  content: "·";
  margin-right: 0.75rem;
  color: var(--color-border);
}

.article-row__title { font-size: 1.25rem; margin: 0 0 0.4rem; }

.article-row__title a:hover { color: var(--color-accent); }

.article-row__description {
  color: var(--color-text-secondary);
  margin: 0 0 0.7rem;
  max-width: 60ch;
}

/* ---------- TAGS ---------- */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--color-text-secondary);
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 0.2rem 0.6rem;
}

.tag:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* ---------- UTILIDADES ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.meta {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.01em;
}

/* ---------- PÁGINA DE ARTÍCULO ---------- */
.article {
  padding: 3rem 1.5rem 2rem;
}

.article__header { margin-bottom: 2.5rem; }

.article__title { font-size: 2rem; margin: 0.6rem 0 0.8rem; }

.article__description {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  margin: 0 0 0.9rem;
}

.article__footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.article__pagination {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.article__pagination-next { text-align: right; margin-left: auto; }

.article__pagination-link { display: flex; flex-direction: column; gap: 0.25rem; }

.article__pagination-link:hover span:last-child { color: var(--color-accent); }

@media (max-width: 640px) {
  .article { padding: 2rem 1.25rem 1.5rem; }
  .article__title { font-size: 1.6rem; }
  .article__pagination { flex-direction: column; }
  .article__pagination-next { text-align: left; margin-left: 0; }
}

/* ---------- CONTENIDO DEL ARTÍCULO (texto, código, imágenes) ---------- */
.article-body { font-size: 1.0625rem; line-height: 1.75; }

.article-body > * + * { margin-top: 1.35em; }

.article-body h2 { font-size: 1.5rem; margin-top: 2.2em; margin-bottom: 0.6em; }
.article-body h3 { font-size: 1.2rem; margin-top: 1.8em; margin-bottom: 0.5em; }

.article-body a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: rgba(59, 130, 246, 0.35);
  text-underline-offset: 3px;
}

.article-body a:hover { text-decoration-color: var(--color-accent); }

.article-body ul, .article-body ol { padding-left: 1.4em; }

.article-body blockquote {
  margin: 1.5em 0;
  padding: 0.2em 1.2em;
  border-left: 3px solid var(--color-accent);
  color: var(--color-text-secondary);
  font-style: italic;
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  display: block;
  margin: 1.8em auto;
  border: 1px solid var(--color-border);
}

.article-body figcaption {
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: 0.5em;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  display: block;
  overflow-x: auto;
}

.article-body th, .article-body td {
  border: 1px solid var(--color-border);
  padding: 0.5em 0.8em;
  text-align: left;
}

.article-body th { background: var(--color-bg-raised); font-weight: 600; }

.article-body hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2.5em 0;
}

.article-body :not(pre) > code {
  font-family: var(--font-mono);
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.88em;
}

.article-body pre {
  background: var(--color-code-bg);
  color: var(--color-code-text);
  padding: 1.1rem 1.25rem;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.6;
  border: 1px solid #1F2937;
}

.article-body pre code {
  font-family: var(--font-mono);
  background: transparent;
  border: none;
  padding: 0;
}

@media (max-width: 640px) {
  body { font-size: 1rem; }
  .article-body pre { font-size: 0.82rem; padding: 0.9rem 1rem; }
}

/* ---------- ARCHIVO (página cronológica) ---------- */
.archive-header { padding: 3rem 1.5rem 1.5rem; }
.archive-header h1 { font-size: 1.9rem; margin: 0.4rem 0 0.6rem; }

.archive {
  padding: 1rem 1.5rem 4rem;
  max-width: 42rem;
  margin: 0 auto;
}

.archive-year { margin-bottom: 2rem; }

.archive-year h2 {
  font-size: 1.6rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

.archive-month h3 {
  font-size: 1rem;
  color: var(--color-text-secondary);
  font-weight: 600;
  margin: 1.2rem 0 0.6rem;
}

.archive-month ul { list-style: none; padding: 0; margin: 0; }

.archive-month li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.5rem 0;
  border-bottom: 1px dashed var(--color-border);
}

.archive-month li a:hover { color: var(--color-accent); }

@media (max-width: 640px) {
  .archive-month li { flex-direction: column; gap: 0.15rem; }
}

/* ---------- CATEGORÍA (página de listado) ---------- */
.category-header { padding: 3rem 1.5rem 1.5rem; }
.category-header h1 { font-size: 1.9rem; margin: 0.4rem 0 0.6rem; }
.category-header__description { color: var(--color-text-secondary); max-width: 50ch; }
.category-list { padding: 1rem 1.5rem 3rem; }

/* ---------- ESTADO VACÍO (sin artículos todavía) ---------- */
.empty-state {
  color: var(--color-text-secondary);
  padding: 1rem 0;
}