/* ====================================================================
   Ediciones Lo Desconocido — Sistema de diseño
   Ver DESIGN.md para el razonamiento detrás de cada decisión.
   ==================================================================== */

@font-face {
  font-family: 'Fraunces';
  src: local('Fraunces');
  font-display: swap;
}

:root {
  /* ---- Color: paleta comprometida (terracota como firma) ---- */
  --color-bg: oklch(96.5% 0.012 70);          /* crudo/hueso */
  --color-bg-raised: oklch(94% 0.014 70);     /* crudo ligeramente más denso */
  --color-ink: oklch(26% 0.045 255);          /* azul marino oscuro, texto principal */
  --color-ink-soft: oklch(40% 0.035 255);     /* azul marino suavizado, texto secundario */
  --color-ink-faint: oklch(48% 0.025 255);    /* metadatos, labels — 4.5:1+ sobre crudo */
  --color-border: oklch(85% 0.02 70);         /* divisores sutiles */
  --color-border-strong: oklch(74% 0.025 70);

  --color-accent: oklch(56% 0.14 40);         /* terracota quemado — firma de marca */
  --color-accent-deep: oklch(46% 0.13 38);    /* hover/active del acento */
  --color-accent-ink: oklch(97% 0.01 60);     /* texto sobre acento */

  --color-focus: oklch(56% 0.14 40);

  /* ---- Tipografía ---- */
  --font-display: 'Fraunces', 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --font-body: 'Source Sans 3', 'Segoe UI', system-ui, -apple-system, sans-serif;

  --text-xs: 0.8125rem;
  --text-sm: 0.9375rem;
  --text-base: 1.0625rem;
  --text-lg: 1.3125rem;
  --text-xl: 1.75rem;
  --text-2xl: clamp(2.25rem, 3vw + 1.5rem, 3.25rem);
  --text-3xl: clamp(2.75rem, 5vw + 1.5rem, 4.75rem);

  /* ---- Espaciado: base 4pt ---- */
  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 9rem;

  --measure: 68ch;

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 160ms;
  --duration-base: 240ms;
}

/* ---- Reset mínimo ---- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  font-kerning: normal;
}

img, svg { max-width: 100%; display: block; }

a {
  color: inherit;
  text-decoration-color: var(--color-border-strong);
  text-underline-offset: 0.15em;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; }
p + p { margin-top: 1em; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==================================================================
   Layout primitives
   ================================================================== */

.wrap {
  max-width: 76rem;
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.prose {
  max-width: var(--measure);
}

.prose > * + * {
  margin-top: 1.1em;
}

.prose h2 {
  margin-top: var(--space-lg);
  font-size: var(--text-lg);
}

.prose h2 + * {
  margin-top: var(--space-sm);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--space-sm);
  top: -3rem;
  background: var(--color-ink);
  color: var(--color-bg);
  padding: var(--space-2xs) var(--space-sm);
  border-radius: 2px;
  transition: top var(--duration-base) var(--ease-out-expo);
  z-index: 100;
}
.skip-link:focus { top: var(--space-sm); }

/* ==================================================================
   Header / nav
   ================================================================== */

.site-header {
  padding-block: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo {
  height: 48px;
  width: auto;
  display: block;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.primary-nav ul {
  list-style: none;
  display: flex;
  gap: var(--space-md);
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
}

.primary-nav a {
  text-decoration: none;
  padding-block: var(--space-3xs);
  border-bottom: 1px solid transparent;
  transition: color var(--duration-fast) var(--ease-out-expo),
              border-color var(--duration-fast) var(--ease-out-expo);
}

.primary-nav a:hover,
.primary-nav a:focus-visible,
.primary-nav a[aria-current="page"] {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.social-links {
  display: flex;
  gap: var(--space-xs);
}

.social-links a {
  display: grid;
  place-items: center;
  position: relative;
  width: 32px;
  height: 32px;
  color: var(--color-ink-soft);
  transition: color var(--duration-fast) var(--ease-out-expo);
}
.social-links a::before {
  content: '';
  position: absolute;
  inset: -6px;
}
.social-links a:hover,
.social-links a:focus-visible { color: var(--color-accent); }
.social-links svg { width: 18px; height: 18px; }

.nav-toggle {
  display: none;
}

/* ==================================================================
   Buttons
   ================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
  padding: 0.85em 1.75em;
  border-radius: 3px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--duration-base) var(--ease-out-expo),
              border-color var(--duration-base) var(--ease-out-expo),
              color var(--duration-base) var(--ease-out-expo);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}
.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-accent-deep);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-border-strong);
}
.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3xs);
  text-decoration: none;
  font-weight: 600;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-border-strong);
  padding-bottom: 0.1em;
  transition: color var(--duration-fast) var(--ease-out-expo),
              border-color var(--duration-fast) var(--ease-out-expo);
}
.link-arrow:hover,
.link-arrow:focus-visible {
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.link-arrow svg {
  width: 0.9em;
  height: 0.9em;
  transition: transform var(--duration-base) var(--ease-out-expo);
}
.link-arrow:hover svg { transform: translateX(3px); }

/* ==================================================================
   Hero
   ================================================================== */

.hero {
  padding-block: var(--space-2xl) var(--space-xl);
}

.hero .wrap {
  display: grid;
  gap: var(--space-xl);
  align-items: center;
}

.hero-eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-faint);
  margin-bottom: var(--space-sm);
}

.hero-title {
  font-size: var(--text-3xl);
  line-height: 1.05;
  color: var(--color-ink);
}

.hero-subtitle {
  margin-top: var(--space-md);
  font-size: var(--text-lg);
  color: var(--color-ink-soft);
  max-width: 42ch;
}

.hero-actions {
  margin-top: var(--space-lg);
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.hero-figure {
  position: relative;
  min-height: 360px;
  overflow: hidden;
}

.hero-parallax-item {
  position: absolute;
  --parallax-y: 0px;
  --rotate: 0deg;
  transform: translateY(var(--parallax-y)) rotate(var(--rotate));
  will-change: transform;
}
.hero-parallax-item img {
  width: 100%;
  height: 100%;
  filter: brightness(0) saturate(100%);
}

@media (prefers-reduced-motion: reduce) {
  .hero-parallax-item { transform: rotate(var(--rotate)) !important; }
}

@media (min-width: 860px) {
  .hero .wrap {
    grid-template-columns: 1.05fr 0.95fr;
  }
}

/* ==================================================================
   Cita destacada
   ================================================================== */

.quote-section {
  background: var(--color-bg-raised);
  padding-block: var(--space-2xl);
  border-block: 1px solid var(--color-border);
}

.quote-section blockquote {
  max-width: 46ch;
  margin: 0 auto;
  text-align: center;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  line-height: 1.35;
  color: var(--color-ink);
}

.quote-section .accent-mark {
  color: var(--color-accent);
  font-weight: 600;
}

.quote-cite {
  display: block;
  margin-top: var(--space-md);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-faint);
}

/* ==================================================================
   Sección genérica
   ================================================================== */

.section {
  padding-block: var(--space-2xl);
}

.section--flush {
  padding-top: 0;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.section-title {
  font-size: var(--text-2xl);
}

.section-kicker {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-faint);
  display: block;
  margin-bottom: var(--space-2xs);
}

/* ==================================================================
   Catálogo
   ================================================================== */

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-lg) var(--space-md);
}

.book-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}

.book-cover {
  aspect-ratio: 5 / 7;
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: var(--space-sm);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--duration-base) var(--ease-out-expo),
              border-color var(--duration-base) var(--ease-out-expo);
}

.book-card:hover .book-cover,
.book-card:focus-visible .book-cover {
  border-color: transparent;
  box-shadow: 0 8px 24px oklch(26% 0.045 255 / 0.16);
}

.book-cover img { width: 100%; height: 100%; object-fit: cover; }

.book-author {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-faint);
  margin-bottom: var(--space-3xs);
}

.book-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  line-height: 1.2;
  margin-bottom: var(--space-2xs);
  transition: color var(--duration-fast) var(--ease-out-expo);
}

.book-card:hover .book-title,
.book-card:focus-visible .book-title { color: var(--color-accent); }

.book-blurb {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  line-height: 1.5;
}

/* ==================================================================
   Footer
   ================================================================== */

.site-footer {
  background: var(--color-accent);
  color: var(--color-accent-ink);
  padding-block: var(--space-xl) var(--space-lg);
  margin-top: var(--space-2xl);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.footer-brand .brand-logo {
  height: 64px;
  /* Logo original en azul marino/negro; se pasa a blanco sólido para leer sobre el fondo terracota. */
  filter: brightness(0) invert(1);
}

.footer-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
  padding-top: var(--space-lg);
  border-top: 1px solid oklch(97% 0.01 60 / 0.25);
  font-size: var(--text-xs);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs) var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-links a { text-decoration: none; }
.footer-links a:hover, .footer-links a:focus-visible { text-decoration: underline; }

/* ==================================================================
   Ficha de libro
   ================================================================== */

.book-detail > .wrap:not(.excerpt) {
  padding-block: var(--space-xl);
  display: grid;
  gap: var(--space-xl);
}

.book-detail-cover img {
  width: 100%;
  height: auto;
  border-radius: 3px;
  border: 1px solid var(--color-border);
}

.book-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-lg);
  margin-block: var(--space-md) var(--space-lg);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-ink-faint);
}
.book-detail-meta dt { display: inline; }
.book-detail-meta dd { display: inline; margin: 0; font-weight: 400; color: var(--color-ink-soft); text-transform: none; letter-spacing: normal; }

.book-detail-title {
  font-size: var(--text-3xl);
  line-height: 1.05;
}
.book-detail-author {
  margin-top: var(--space-2xs);
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: var(--color-ink-soft);
}

.book-detail-desc {
  margin-top: var(--space-lg);
  font-size: var(--text-base);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.book-detail-actions {
  margin-top: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.book-detail-price {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-ink-faint);
}

.excerpt {
  margin-top: var(--space-2xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-border);
}

.excerpt-columns {
  display: grid;
  gap: var(--space-lg);
  margin-top: var(--space-md);
}
.excerpt-columns > div {
  min-width: 0;
}

.excerpt-block {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  line-height: 1.55;
  white-space: pre-line;
}

.excerpt-block[lang="fr"] { color: var(--color-ink); }
.excerpt-block[lang="es"] { color: var(--color-ink-soft); font-style: italic; }

.excerpt-lang-label {
  display: block;
  font-family: var(--font-body);
  font-style: normal;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-faint);
  margin-bottom: var(--space-2xs);
}

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

@media (min-width: 780px) {
  .book-detail > .wrap:not(.excerpt) {
    grid-template-columns: 280px 1fr;
  }
}

/* ==================================================================
   Blog
   ================================================================== */

.post-list {
  display: flex;
  flex-direction: column;
  max-width: var(--measure);
}

.post-item {
  padding-block: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: inherit;
  display: block;
}
.post-item:first-child { padding-top: 0; }

.post-date {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-faint);
  margin-bottom: var(--space-2xs);
}

.post-item-title {
  font-size: var(--text-xl);
  transition: color var(--duration-fast) var(--ease-out-expo);
}
.post-item:hover .post-item-title,
.post-item:focus-visible .post-item-title { color: var(--color-accent); }

.post-excerpt {
  margin-top: var(--space-2xs);
  color: var(--color-ink-soft);
}

.post-article {
  max-width: var(--measure);
}

.post-article .post-date { margin-bottom: var(--space-sm); }

.post-article h1 {
  font-size: var(--text-2xl);
  line-height: 1.1;
  margin-bottom: var(--space-lg);
}

/* ==================================================================
   Contacto
   ================================================================== */

.contact-layout {
  display: grid;
  gap: var(--space-xl);
}

.contact-intro p { color: var(--color-ink-soft); }

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  margin-bottom: var(--space-md);
}

.field label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-ink-faint);
}

.field input,
.field textarea {
  font: inherit;
  font-size: var(--text-base);
  color: var(--color-ink);
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border-strong);
  border-radius: 2px;
  padding: 0.75em 0.9em;
  transition: border-color var(--duration-fast) var(--ease-out-expo);
}

.field input:focus-visible,
.field textarea:focus-visible {
  border-color: var(--color-accent);
  outline: none;
}

.field textarea { resize: vertical; min-height: 9rem; }

.form-note {
  margin-top: var(--space-sm);
  font-size: var(--text-xs);
  color: var(--color-ink-faint);
}

@media (min-width: 780px) {
  .contact-layout { grid-template-columns: 1fr 1.2fr; }
}

/* ==================================================================
   Wikimaldita
   ================================================================== */

.wiki-index {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs) var(--space-sm);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.wiki-index a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  color: var(--color-ink-faint);
  transition: color var(--duration-fast) var(--ease-out-expo);
}
.wiki-index a:hover,
.wiki-index a:focus-visible { color: var(--color-accent); }

.wiki-group {
  scroll-margin-top: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.wiki-group-letter {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-ink-faint);
  margin-bottom: var(--space-sm);
}

.wiki-entry {
  border-bottom: 1px solid var(--color-border);
}
.wiki-entry:first-of-type { border-top: 1px solid var(--color-border); }

.wiki-entry summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2xs) var(--space-md);
  padding-block: var(--space-sm);
  cursor: pointer;
  list-style: none;
}
.wiki-entry summary::-webkit-details-marker { display: none; }

.wiki-entry-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-ink);
  transition: color var(--duration-fast) var(--ease-out-expo);
  min-width: 0;
}
.wiki-entry:hover .wiki-entry-name,
.wiki-entry summary:focus-visible .wiki-entry-name { color: var(--color-accent); }

.wiki-entry-years {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-ink-faint);
  white-space: nowrap;
}

.wiki-entry-icon {
  width: 0.9em;
  height: 0.9em;
  color: var(--color-ink-faint);
  transition: transform var(--duration-base) var(--ease-out-expo);
  flex-shrink: 0;
}
.wiki-entry[open] .wiki-entry-icon { transform: rotate(45deg); }

.wiki-entry-body {
  padding-bottom: var(--space-md);
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.wiki-entry-body a {
  font-weight: 600;
  color: var(--color-ink);
  text-decoration-color: var(--color-border-strong);
}
.wiki-entry-body a:hover,
.wiki-entry-body a:focus-visible { color: var(--color-accent); }

/* ==================================================================
   Cascada de fondo (Conócenos)
   ================================================================== */

.maze-cascade {
  position: relative;
}

.maze-cascade-layer {
  display: none;
  position: absolute;
  inset: 0;
  max-width: 76rem;
  margin-inline: auto;
  overflow: visible;
  pointer-events: none;
  z-index: 0;
}

.maze-cascade-layer img {
  position: absolute;
  filter: brightness(0) saturate(100%);
}

.maze-cascade > .page-header,
.maze-cascade > .section {
  position: relative;
  z-index: 1;
}

/* El hueco a la derecha del texto solo es lo bastante ancho a partir de
   aquí; por debajo, la cascada arriesga solaparse con la última palabra
   de cada línea. */
@media (min-width: 1100px) {
  .maze-cascade-layer { display: block; }
}

/* ==================================================================
   Página de catálogo / listados (headers de página simples)
   ================================================================== */

.page-header {
  padding-block: var(--space-xl) var(--space-lg);
}

.page-header .section-title { font-size: var(--text-3xl); }
.page-header p {
  margin-top: var(--space-sm);
  font-size: var(--text-lg);
  color: var(--color-ink-soft);
  max-width: 46ch;
}

/* ==================================================================
   Responsive: navegación mobile
   ================================================================== */

@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--color-border-strong);
    border-radius: 2px;
    background: transparent;
    color: var(--color-ink);
  }
  .nav-toggle svg { width: 20px; height: 20px; }

  .primary-nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    z-index: 50;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-md);
    gap: var(--space-md);
    display: none;
  }
  .primary-nav.is-open { display: flex; }
  .primary-nav ul {
    flex-direction: column;
    gap: var(--space-sm);
    font-size: var(--text-base);
  }
  .social-links { padding-top: var(--space-sm); border-top: 1px solid var(--color-border); }

  .site-header .wrap { position: relative; }
}