/* ──────────────────────────────────────────────────────────────
   ATLAS · Hoja de estilos
   Tokens y shell heredados de albertomartinfernandez.com
   ────────────────────────────────────────────────────────────── */

:root, [data-theme="light"] {
  --bg:        #ffffff;
  --bg-alt:    #f5f5f5;
  --ink:       #111111;
  --ink-2:     #2a2a2a;
  --ink-3:     #555555;
  --ink-4:     #767676;
  --rule:      #dddddd;
  --carmin:    #9B1D20;
  --carmin-h:  #7a1518;
  --seal-bg:   #111111;
  --seal-fg:   #ffffff;
  --footer-bg: #111111;
  --footer-ink:#cccccc;
  --footer-dim:#888888;
  /* Carta celeste: el mapa vive sobre una placa de tinta en ambos temas.
     Valores tomados de la paleta existente (ink, bg-alt oscuro, carmín oscuro). */
  --map-bg:      #111111;
  --map-halo:    #222222;
  --map-edge:    rgba(255,255,255,0.55);
  --map-label:   rgba(255,255,255,0.85);
  --map-dim:     rgba(255,255,255,0.45);
  --map-carmin:  #E05252;
  --map-carmin-h:#ec7272;
  /* Esferas (gradiente de 3 paradas: brillo, cuerpo, borde en sombra) */
  --node-hi:         #ffffff;
  --node-mid:        #d4d4d4;
  --node-lo:         #767676;
  --node-hi-active:  #e8706e;
  --node-mid-active: #cf5a58;
  --node-lo-active:  #7a1518;
  --node-shadow:     rgba(0,0,0,0.5);
}

[data-theme="dark"] {
  --bg:        #111111;
  --bg-alt:    #222222;
  --ink:       #f0f0f0;
  --ink-2:     #e0e0e0;
  --ink-3:     #c8c8c8;
  --ink-4:     #999999;
  --rule:      rgba(255,255,255,0.25);
  --carmin:    #E05252;
  --carmin-h:  #ec7272;
  --seal-bg:   #f0f0f0;
  --seal-fg:   #111111;
  --footer-bg: #0a0a0a;
  --footer-ink:#cccccc;
  --footer-dim:#888888;
  /* En tema oscuro la placa se funde con el fondo: solo cambia su base */
  --map-bg:   #0a0a0a;
  --map-halo: #222222;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background 0.3s ease, color 0.3s ease;
}

* { cursor: default; }
a, button, [role="button"] { cursor: pointer; }

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

[hidden] { display: none !important; }

/* ── SKIP LINK ── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  padding: 10px 20px;
  background: var(--carmin);
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  z-index: 9999;
}
.skip-link:focus { top: 0; }

/* ── NAV ── */
.nav {
  position: sticky; top: 0; z-index: 100;
  height: 52px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 40px;
  background: var(--bg);
  border-bottom: 1px solid var(--rule);
  transition: background 0.3s ease, border-color 0.3s ease;
}

.nav__logo {
  font-size: 13px; font-weight: 700; letter-spacing: -0.02em;
  color: var(--ink); text-decoration: none;
  transition: color 0.3s;
}

.nav__links { display: flex; gap: 28px; list-style: none; }
.nav__links > li { position: relative; }
.nav__links a, .nav__links .nav__parent {
  font-size: 10px; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink); text-decoration: none;
  transition: color 0.2s;
  padding: 4px 0;
  background: none; border: none; font-family: inherit;
}
.nav__links a:hover,
.nav__links .nav__parent:hover,
.nav__links .has-sub:hover .nav__parent { color: var(--carmin); }
.nav__links a.active { color: var(--carmin); }

/* Desplegable "Escrituras" */
.nav__parent { display: inline-flex; align-items: center; gap: 5px; cursor: pointer; }
.nav__parent::after { content: '▾'; font-size: 8px; transform: translateY(1px); }
.nav__sub {
  position: absolute; top: calc(100% + 6px); left: 0;
  display: none; flex-direction: column;
  min-width: 180px; padding: 6px 0; list-style: none;
  background: var(--bg); border: 1px solid var(--rule);
  box-shadow: 0 8px 24px rgba(0,0,0,0.10);
  transition: background 0.3s, border-color 0.3s;
}
.nav__links li.has-sub.is-open .nav__sub,
.nav__links li.has-sub:focus-within .nav__sub { display: flex; }
.nav__links li.has-sub::after { content: ''; position: absolute; top: 100%; left: 0; width: 100%; height: 10px; }
.nav__sub li { position: static; }
.nav__sub a { display: block; padding: 9px 18px; letter-spacing: 0.1em; white-space: nowrap; }
.nav__sub a:hover { color: var(--carmin); }

.nav__right {
  display: flex; align-items: stretch; gap: 0;
  height: 30px;
}

.nav__seal {
  display: flex; align-items: stretch;
  border: 1.5px solid var(--ink);
  border-right: none;
  overflow: hidden;
  transition: border-color 0.3s;
}

.seal__initials {
  background: var(--seal-bg); color: var(--seal-fg);
  display: flex; align-items: center; justify-content: center;
  padding: 0 9px;
  font-size: 10px; font-weight: 700; letter-spacing: 0.06em;
  transition: background 0.3s, color 0.3s;
}
.seal__div { width: 1.5px; background: var(--ink); flex-shrink: 0; transition: background 0.3s; }
.seal__data {
  display: flex; flex-direction: column; justify-content: center;
  padding: 0 8px; gap: 2px;
}
.seal__l1 { font-size: 7px; font-weight: 700; letter-spacing: 0.14em; color: var(--ink); transition: color 0.3s; }
.seal__l2 { font-size: 6px; font-weight: 500; letter-spacing: 0.12em; color: var(--ink-3); transition: color 0.3s; }

.theme-toggle {
  display: flex; align-items: center; justify-content: center;
  gap: 6px;
  padding: 0 12px;
  background: none;
  border: 1.5px solid var(--ink);
  color: var(--ink-3);
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 7px; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  cursor: pointer; white-space: nowrap;
  transition: background 0.2s, color 0.2s, border-color 0.3s;
  height: 30px;
}
.theme-toggle:hover { background: var(--ink); color: var(--bg); }
.theme-toggle__icon { font-size: 11px; line-height: 1; flex-shrink: 0; }
.theme-toggle__label { font-size: 7px; font-weight: 700; letter-spacing: 0.14em; }

.nav__hamburger {
  display: none;
  flex-direction: column; justify-content: center; gap: 5px;
  width: 36px; height: 36px;
  background: none; border: none; cursor: pointer; padding: 6px;
  margin-right: 8px;
}
.nav__hamburger span {
  display: block; width: 100%; height: 1.5px;
  background: var(--ink);
  transition: background 0.3s, transform 0.25s, opacity 0.25s;
}
.nav__hamburger.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__hamburger.is-open span:nth-child(2) { opacity: 0; }
.nav__hamburger.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav-mobile {
  display: none;
  position: fixed; inset: 52px 0 0 0; z-index: 99;
  background: var(--bg);
  flex-direction: column; align-items: center; justify-content: center;
  gap: 40px;
  border-top: 1px solid var(--rule);
  transition: background 0.3s;
}
.nav-mobile.is-open { display: flex; }
.nav-mobile a {
  font-size: 13px; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink); text-decoration: none;
  transition: color 0.2s;
}
.nav-mobile a:hover,
.nav-mobile a.active { color: var(--carmin); }
/* Grupo Escrituras como acordeón */
.nav-mobile__group { display: flex; flex-direction: column; align-items: center; gap: 40px; }
.nav-mobile__toggle {
  font-size: 13px; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink); background: none; border: none; cursor: pointer;
  font-family: inherit;
  display: inline-flex; align-items: center; gap: 8px;
  transition: color 0.2s;
}
.nav-mobile__toggle:hover { color: var(--carmin); }
.nav-mobile__toggle::after { content: '▾'; font-size: 10px; transition: transform 0.25s ease; }
.nav-mobile__toggle[aria-expanded="true"]::after { transform: rotate(180deg); }
.nav-mobile__sub { display: none; flex-direction: column; align-items: center; gap: 40px; }
.nav-mobile__group.is-open .nav-mobile__sub { display: flex; }
.nav-mobile__sub a { font-size: 13px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }
.nav-mobile__sub a:hover, .nav-mobile__sub a.active { color: var(--carmin); }

/* ── SECTION / HEADER ── */
.section { border-bottom: 1px solid var(--rule); transition: border-color 0.3s; }

.section-header {
  display: grid;
  grid-template-columns: 52px 1fr auto;
  align-items: stretch;
  border-bottom: 1px solid var(--rule);
  height: 52px;
  transition: border-color 0.3s;
}
.section-header__num {
  display: flex; align-items: center; justify-content: center;
  border-right: 1px solid var(--rule);
  font-size: 9px; font-weight: 700;
  letter-spacing: 0.08em; color: var(--ink-4);
  transition: color 0.3s, border-color 0.3s;
}
.section-header__title {
  display: flex; align-items: center;
  padding: 0 40px;
  font-family: 'EB Garamond', Georgia, serif;
  font-size: 28px; font-weight: 400; font-style: italic;
  color: var(--carmin);
  transition: color 0.3s;
}
.section-header__meta {
  display: flex; align-items: center;
  padding: 0 40px;
  font-size: 9px; font-weight: 400;
  letter-spacing: 0.08em; color: var(--ink-4);
  border-left: 1px solid var(--rule);
  transition: color 0.3s, border-color 0.3s;
}

/* ── INTRO ── */
.atlas-intro {
  padding: 40px;
  border-bottom: 1px solid var(--rule);
  transition: border-color 0.3s;
}
.atlas-intro p {
  font-family: 'EB Garamond', Georgia, serif;
  font-size: 18px; font-weight: 400;
  line-height: 1.85; color: var(--ink-2);
  max-width: 680px;
  transition: color 0.3s;
}
.atlas-intro p + p { margin-top: 18px; }

/* ── FILTROS (escala) ── */
.atlas-filters {
  display: flex; flex-wrap: wrap; gap: 8px;
  padding: 24px 40px;
  border-bottom: 1px solid var(--rule);
  transition: border-color 0.3s;
}
.atlas-filter-btn {
  background: none;
  border: 1px solid var(--rule);
  color: var(--ink-3);
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 8px; font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase;
  padding: 7px 13px;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.atlas-filter-btn:hover { border-color: var(--ink); color: var(--ink); }
.atlas-filter-btn.is-active { border-color: var(--carmin); color: var(--carmin); }

/* ══════════════════════════════════════════
   MAPA DE CONSTELACIÓN (desktop) — carta celeste
══════════════════════════════════════════ */
.atlas-map-wrapper {
  position: relative;
  padding: 24px 40px 16px;
}

.atlas-map {
  display: block;
  width: 100%;
  height: auto;
  max-height: 76vh;
  margin: 0 auto;
  background: var(--map-bg);
  border: 1px solid var(--rule);
  overflow: hidden;
  transition: background 0.3s, border-color 0.3s;
}

/* Stops de gradientes (tematizables vía CSS) */
.atlas-grad-bg-c       { stop-color: var(--map-halo); }
.atlas-grad-bg-e       { stop-color: var(--map-bg); }
.atlas-grad-hi         { stop-color: var(--node-hi); }
.atlas-grad-mid        { stop-color: var(--node-mid); }
.atlas-grad-lo         { stop-color: var(--node-lo); }
.atlas-grad-hi-active  { stop-color: var(--node-hi-active); }
.atlas-grad-mid-active { stop-color: var(--node-mid-active); }
.atlas-grad-lo-active  { stop-color: var(--node-lo-active); }

/* Estrellas de fondo */
.atlas-star { fill: #ffffff; pointer-events: none; }

/* Fondo del mapa — arrastrar para girar todo el conjunto */
.atlas-map__bg { cursor: grab; }
.atlas-map-wrapper.is-rotating,
.atlas-map-wrapper.is-rotating .atlas-map__bg { cursor: grabbing; }

/* Aristas — luz de estrella; la opacidad por profundidad la pinta el JS */
.atlas-edge {
  stroke: var(--map-edge);
  stroke-width: 1;
  transition: stroke 0.3s;
}
.atlas-edge.is-hot { stroke: var(--map-carmin); stroke-width: 1.4; }

/* Nodos — esferas 3D arrastrables */
.atlas-node { cursor: grab; touch-action: none; }
.atlas-node.is-dragging { cursor: grabbing; }
.atlas-node__circle {
  fill: url(#atlasNodeGrad);
  stroke: rgba(255,255,255,0.12);
  stroke-width: 1;
  filter: drop-shadow(0 4px 8px var(--node-shadow));
  transition: stroke 0.25s;
}
.atlas-node:hover .atlas-node__circle,
.atlas-node.is-active .atlas-node__circle {
  fill: url(#atlasNodeGradActive);
  stroke: var(--map-carmin);
}
.atlas-node:focus-visible { outline: none; }
.atlas-node:focus-visible .atlas-node__circle {
  stroke: var(--map-carmin);
  stroke-width: 3;
}
.atlas-node.is-active .atlas-node__circle { stroke-width: 1.5; }

/* Etiquetas — claras sobre la placa, con halo para legibilidad sobre aristas */
.atlas-node__label {
  font-family: 'EB Garamond', Georgia, serif;
  font-style: italic;
  fill: var(--map-label);
  stroke: var(--map-bg);
  stroke-width: 3px;
  stroke-linejoin: round;
  paint-order: stroke;
  text-anchor: middle;
  pointer-events: none;
  transition: fill 0.25s;
}
.atlas-node:hover .atlas-node__label,
.atlas-node.is-active .atlas-node__label { fill: var(--map-carmin-h); }

/* Difuminado por filtro de escala */
.atlas-node.is-faded { opacity: 0.1 !important; pointer-events: none; }

/* Botón recentrar — flota sobre la placa */
.atlas-map__reset {
  position: absolute;
  top: 38px; right: 54px;
  z-index: 4;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.25);
  color: var(--map-dim);
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 8px; font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase;
  padding: 7px 13px;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.atlas-map__reset:hover {
  border-color: var(--map-carmin);
  color: var(--map-carmin-h);
}

/* Tooltip — papel sobre tinta */
.atlas-map__tooltip {
  position: absolute;
  z-index: 5;
  padding: 6px 11px;
  background: #ffffff;
  color: #111111;
  font-size: 9px; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  white-space: nowrap;
  pointer-events: none;
  transform: translate(-50%, -130%);
  transition: opacity 0.15s;
}

.atlas-map__hint {
  text-align: center;
  font-size: 9px; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-4);
  padding: 12px 0 6px;
  transition: color 0.3s, opacity 0.3s;
}
.atlas-map__hint b {
  color: var(--ink-2);
  font-weight: 700;
}

/* ══════════════════════════════════════════
   ÍNDICE DE TENSIONES (móvil)
══════════════════════════════════════════ */
.atlas-tensions {
  display: none;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  padding: 24px 20px;
}
.atlas-tension-card {
  display: flex; flex-direction: column; gap: 6px;
  padding: 16px 14px;
  background: var(--bg-alt);
  border: 1px solid var(--rule);
  text-align: left;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.atlas-tension-card:hover,
.atlas-tension-card.is-active { border-color: var(--carmin); }
.atlas-tension-card.is-active { background: var(--carmin); }
.atlas-tension-card.is-hidden { display: none; }
.atlas-tension-card__scale {
  font-size: 7px; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-4);
}
.atlas-tension-card__name {
  font-family: 'EB Garamond', Georgia, serif;
  font-size: 18px; font-style: italic; font-weight: 500;
  color: var(--ink);
  line-height: 1.15;
}
.atlas-tension-card__pair {
  font-size: 11px; color: var(--ink-3);
}
.atlas-tension-card.is-active .atlas-tension-card__scale,
.atlas-tension-card.is-active .atlas-tension-card__name,
.atlas-tension-card.is-active .atlas-tension-card__pair { color: #fff; }

/* ══════════════════════════════════════════
   PANEL DE LIBROS
══════════════════════════════════════════ */
.atlas-panel { scroll-margin-top: 60px; }
.atlas-panel__head {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 20px;
  padding: 28px 40px 22px;
  border-bottom: 1px solid var(--rule);
  transition: border-color 0.3s;
}
.atlas-panel__scale {
  display: block;
  font-size: 8px; font-weight: 700;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 8px;
}
.atlas-panel__title {
  font-family: 'EB Garamond', Georgia, serif;
  font-size: 30px; font-weight: 400; font-style: italic;
  color: var(--carmin);
  line-height: 1.1;
}
.atlas-panel__tension {
  margin-top: 6px;
  font-size: 12px; color: var(--ink-3);
  letter-spacing: 0.04em;
}
.atlas-panel__close {
  flex-shrink: 0;
  background: none;
  border: 1px solid var(--rule);
  color: var(--ink-3);
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 8px; font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase;
  padding: 8px 13px;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.atlas-panel__close:hover { border-color: var(--carmin); color: var(--carmin); }

.atlas-panel__empty {
  grid-column: 1 / -1;
  font-family: 'EB Garamond', Georgia, serif;
  font-size: 17px; font-style: italic;
  color: var(--ink-4);
  padding: 12px 0;
}

/* ── GRID ── */
.atlas-grid-wrapper { padding: 36px 40px 44px; }
.atlas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 2rem;
}

/* ══════════════════════════════════════════
   TARJETA DE LIBRO (una sola cara)
══════════════════════════════════════════ */
.atlas-card {
  position: relative;
  display: flex;
  flex-direction: column;
}

.atlas-card__cover-link {
  display: block;
  aspect-ratio: 2 / 3;
  width: 100%;
  flex-shrink: 0;   /* el marco 2:3 nunca cede altura dentro de la columna flex */
  overflow: hidden;
  background: var(--bg-alt);
  transition: background 0.3s;
  cursor: pointer;
}
.atlas-card__cover {
  width: 100%; height: 100%;
  object-fit: contain;   /* la portada se ve completa, nunca recortada */
  display: block;
  transition: transform 0.35s ease;
  cursor: pointer;       /* la regla global "* { cursor: default }" pisaba al enlace */
}
.atlas-card__cover-link:hover .atlas-card__cover { transform: scale(1.04); }

.atlas-card__meta {
  padding: 12px 2px 0;
  display: flex; flex-direction: column; gap: 5px;
}
.atlas-card__title {
  font-family: 'EB Garamond', Georgia, serif;
  font-size: 18px; font-weight: 500; font-style: italic;
  color: var(--ink); line-height: 1.18;
  transition: color 0.3s;
}
.atlas-card__byline {
  font-size: 12px; color: var(--ink-4);
  transition: color 0.3s;
}
.atlas-card__pills { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 3px; }
.atlas-card__pill {
  font-size: 7.5px; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-3);
  border: 1px solid var(--rule);
  padding: 3px 7px;
}

[data-theme="dark"] .atlas-card__cover-link { background: #1e1e1e; }

/* ── FOOTER ── */
.footer {
  background: var(--footer-bg);
  padding: 44px 40px 28px;
  transition: background 0.3s;
}
.footer__top {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  gap: 40px; margin-bottom: 40px;
}
.footer__col-label {
  font-size: 8px; font-weight: 700;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--footer-dim); margin-bottom: 14px;
}
.footer__col-content {
  font-size: 11px; font-weight: 400;
  color: var(--footer-ink); line-height: 2.2;
}
.footer__col-content a {
  color: var(--footer-ink); text-decoration: none;
  transition: color 0.2s;
}
.footer__col-content a:hover { color: var(--carmin); }
.footer__signature {
  padding-top: 28px;
  border-top: 1px solid #2a2a2a;
  font-size: 9px; font-weight: 700;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--footer-dim);
  text-align: center;
}

/* ══════════════════════════════════════════
   ACCESIBILIDAD / MOVIMIENTO REDUCIDO
══════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .atlas-card__cover { transition: none; }
  .atlas-edge, .atlas-node__circle, .atlas-node__label { transition: none; }
}

/* ══════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════ */
@media (max-width: 1100px) {
  .nav__seal .seal__data { display: none; }
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }
  .nav { padding: 0 20px; }

  .section-header { grid-template-columns: 40px 1fr; }
  .section-header__meta { display: none; }
  .section-header__title { padding: 0 20px; font-size: 22px; }

  .atlas-intro { padding: 28px 20px; }
  .atlas-intro p { font-size: 16px; }
  .atlas-filters { padding: 18px 20px; flex-wrap: nowrap; overflow-x: auto; }
  .atlas-filter-btn { flex-shrink: 0; }

  /* En móvil: ocultar mapa SVG, mostrar índice de tensiones */
  .atlas-map-wrapper { display: none; }
  .atlas-tensions { display: grid; }

  .atlas-panel__head { padding: 22px 20px 18px; }
  .atlas-panel__title { font-size: 24px; }
  .atlas-grid-wrapper { padding: 24px 20px 36px; }
  .atlas-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }

  .footer { padding: 40px 20px 28px; }
  .footer__top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .atlas-grid { grid-template-columns: 1fr; gap: 1.5rem; }
}