/* Francisco Ortega · Bitácora
   Paleta tomada de los tonos institucionales de la UV (azul y verde), ajustada para contraste. */

:root {
  --azul: #0d3b66;
  --azul-claro: #3c6e9c;
  --verde: #1e7457;
  --verde-claro: #7fc4a3;
  --papel: #f6f4ef;
  --tinta: #14212b;
  --tinta-suave: #4a5a66;
  --linea: #d6dde2;
  --superficie: #ffffff;
  --acento: var(--verde);

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", sans-serif;

  --ancho: 1080px;
  --gutter: 16px;
}

/* Tema oscuro: por preferencia del sistema, salvo que el visitante elija otro */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --papel: #0c1820;
    --tinta: #e7edf1;
    --tinta-suave: #a7b6c1;
    --linea: #22343f;
    --superficie: #112029;
    --azul: #8fb8dd;
    --verde: #7fc4a3;
    --acento: var(--verde-claro);
  }
}
:root[data-theme="dark"] {
  --papel: #0c1820;
  --tinta: #e7edf1;
  --tinta-suave: #a7b6c1;
  --linea: #22343f;
  --superficie: #112029;
  --azul: #8fb8dd;
  --verde: #7fc4a3;
  --acento: var(--verde-claro);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--papel);
  color: var(--tinta);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  transition: background-color .3s ease, color .3s ease;
}

/* Bilingüe: solo se muestra el idioma activo */
html[lang="es"] .en,
html[lang="en"] .es { display: none; }

a { color: var(--azul); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--acento); }
:focus-visible { outline: 2px solid var(--acento); outline-offset: 3px; border-radius: 2px; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--tinta); color: var(--papel); padding: 8px 12px; z-index: 10;
}
.skip:focus { left: 12px; top: 12px; }

/* Encabezado */
.top {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 12px var(--gutter);
  background: color-mix(in srgb, var(--papel) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--linea);
}
.brand {
  font-family: var(--serif); font-weight: 600; font-size: 1.35rem;
  color: var(--azul); text-decoration: none; letter-spacing: .02em;
}
.top nav { flex: 1; min-width: 0; }
.top nav ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; gap: 6px 18px; flex-wrap: wrap; justify-content: flex-end;
}
.top nav a { color: var(--tinta-suave); text-decoration: none; font-size: .95rem; padding: 4px 0; }
.top nav a:hover { color: var(--tinta); }
.controls { display: flex; gap: 8px; }

.pill {
  font: inherit; font-size: .9rem; color: var(--tinta);
  background: var(--superficie); border: 1px solid var(--linea);
  border-radius: 999px; padding: 6px 14px; cursor: pointer;
  min-height: 36px;
}
.pill:hover { border-color: var(--acento); }

/* Botón de tema: sol en tema oscuro, luna en tema claro */
.icon-btn {
  display: inline-grid; place-items: center;
  width: 40px; height: 40px; padding: 0; cursor: pointer;
  color: var(--tinta); background: var(--superficie);
  border: 1px solid var(--linea); border-radius: 999px;
}
.icon-btn:hover { border-color: var(--acento); color: var(--acento); }
.icon-btn svg { width: 20px; height: 20px; grid-area: 1 / 1; }
.icon-btn .icon-sun { display: none; }
.icon-btn .icon-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-btn .icon-sun { display: block; }
  :root:not([data-theme="light"]) .icon-btn .icon-moon { display: none; }
}
:root[data-theme="dark"] .icon-btn .icon-sun { display: block; }
:root[data-theme="dark"] .icon-btn .icon-moon { display: none; }

.social { margin-top: 12px; }
.social a { color: var(--azul); font-weight: 700; }

/* Hero */
.hero {
  position: relative;
  max-width: var(--ancho); margin: 0 auto;
  padding: 72px var(--gutter) 56px;
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 24px;
  align-items: center; min-height: min(78vh, 640px);
}
.hero-text { position: relative; z-index: 1; }
.hero h1 {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(2.6rem, 6.5vw, 4.6rem);
  line-height: 1.02; letter-spacing: -.01em; margin: 0 0 20px;
  color: var(--azul);
}
.lede {
  font-family: var(--serif); font-size: clamp(1.2rem, 2.4vw, 1.45rem);
  line-height: 1.45; color: var(--tinta); max-width: 30ch; margin: 0 0 28px;
}
.hero-links { display: flex; gap: 22px; flex-wrap: wrap; margin: 0; }
.hero-links a {
  font-weight: 700; text-decoration: none;
  border-bottom: 2px solid var(--verde-claro); padding-bottom: 2px;
}
.hero-links a:hover { border-color: var(--acento); }
.hero-canvas { position: relative; height: 100%; min-height: 360px; }
.hero-canvas canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

/* Bloques */
.block {
  max-width: var(--ancho); margin: 0 auto;
  padding: 64px var(--gutter);
  border-top: 1px solid var(--linea);
}
.block h2 {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(1.8rem, 3.6vw, 2.4rem);
  color: var(--azul); margin: 0 0 12px; line-height: 1.15;
}
.intro { color: var(--tinta-suave); max-width: 60ch; margin: 0 0 32px; }

/* Qué hago */
.services {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0 40px; margin-top: 32px;
}
.services article { padding: 20px 0; border-top: 2px solid var(--verde); }
.services h3 { font-family: var(--serif); font-weight: 600; font-size: 1.3rem; margin: 0 0 8px; }
.services p { margin: 0; color: var(--tinta-suave); }

/* Bitácora */
.log { list-style: none; margin: 0; padding: 0; position: relative; }
.log li {
  display: grid; grid-template-columns: 130px 1fr; gap: 24px;
  padding: 22px 0; border-bottom: 1px dotted var(--linea);
}
.log time { font-family: var(--serif); color: var(--verde); font-size: 1.05rem; padding-top: 2px; }
.log h3 { font-family: var(--serif); font-weight: 600; font-size: 1.35rem; margin: 0 0 6px; line-height: 1.25; }
.log h3 a { color: var(--tinta); text-decoration: none; }
.log h3 a:hover { color: var(--acento); text-decoration: underline; }
.log p { margin: 0 0 8px; color: var(--tinta-suave); }
.tag {
  display: inline-block; font-size: .85rem; color: var(--verde);
  border: 1px solid currentColor; border-radius: 4px; padding: 0 8px;
}

/* Listas simples: artículos y libros */
.plain { list-style: none; margin: 0; padding: 0; }
.plain li {
  display: grid; grid-template-columns: 90px 1fr; gap: 20px;
  padding: 18px 0; border-bottom: 1px solid var(--linea);
}
.year { font-family: var(--serif); color: var(--verde); font-size: 1.05rem; }
.plain a { font-family: var(--serif); font-size: 1.2rem; color: var(--tinta); text-decoration: none; }
.plain a:hover { color: var(--acento); text-decoration: underline; }
.book-title { font-family: var(--serif); font-style: italic; font-size: 1.2rem; }
.meta { margin: 4px 0 0; color: var(--tinta-suave); font-size: .95rem; }

/* Herramientas */
.tools {
  margin: 0; display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1px;
  background: var(--linea); border: 1px solid var(--linea);
}
.tools > div { background: var(--superficie); padding: 20px 22px; }
.tools dt { font-size: .85rem; color: var(--verde); margin-bottom: 4px; }
.tools dd { margin: 0; font-family: var(--serif); font-size: 1.2rem; }

/* Acerca de mí */
.about {
  display: grid; grid-template-columns: minmax(200px, 340px) 1fr; gap: 48px; align-items: start;
}
.portrait { margin: 0; position: relative; aspect-ratio: 4 / 5; border-radius: 4px; overflow: hidden; background: var(--azul); }
.monogram {
  position: absolute; inset: 0; display: grid; place-items: center;
  font-family: var(--serif); font-size: 5rem; color: var(--papel); opacity: .9;
}
.portrait img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 1;
}
.bio p { color: var(--tinta); max-width: 62ch; }

footer {
  max-width: var(--ancho); margin: 0 auto; padding: 32px var(--gutter) 48px;
  border-top: 1px solid var(--linea); color: var(--tinta-suave); font-size: .92rem;
}
footer p { margin: 0; }

/* Móvil */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 48px; min-height: 0; }
  .hero-canvas { min-height: 260px; order: 2; }
  .about { grid-template-columns: 1fr; }
  .portrait { max-width: 320px; }
}
@media (max-width: 640px) {
  .top { gap: 10px; }
  .top nav ul { justify-content: flex-start; gap: 4px 14px; }
  .controls { margin-left: auto; }
  .log li, .plain li { grid-template-columns: 1fr; gap: 6px; }
  .log time, .year { font-size: .95rem; }
  .block { padding: 48px var(--gutter); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  body { transition: none; }
}