/* ═══ LA MATRIX — navegador casi idéntico a TheBrain sobre la tela de Rutas Vivas ═══
   Canvas oscuro tipo espacio: foco al centro, padres arriba, hijos abajo, saltos a los lados.
   Cada nodo es una pastilla-puerta con halo; los conectores son curvas SVG luminosas.
   DOM+SVG accesibles (no canvas opaco): los <a> internos dan teclado + lector de pantalla. */

.brain-page { --bg: #070b16; --bg2: #0a1224; --ink: #dce6ff; --muted: #8ea0c0; --line: rgba(120,150,200,.20);
  --parent: #4ea1ff; --child: #3ad29f; --rel: #f4b740; --sib: #8fa0bd; --focus: #ff6f61;
  width: 100vw; max-width: 100vw; margin-left: calc(50% - 50vw); margin-right: calc(50% - 50vw);
  min-height: 100vh; display: flex; flex-direction: column; background: var(--bg); color: var(--ink); }
body:has(.brain-page) { overflow-x: hidden; }

/* ── Barra superior: cristal oscuro. ── */
.brain-top { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: center; justify-content: space-between;
  padding: 12px clamp(12px, 4vw, 30px); background: rgba(10,16,30,.72); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 8; }
.brain-brand { font-weight: 800; letter-spacing: .3px; font-size: 1.1rem; }
.brain-brand small { display: block; font-weight: 500; color: var(--muted); font-size: .76rem; letter-spacing: .2px; }
.brain-searchwrap { flex: 1 1 260px; position: relative; min-width: 200px; }
.brain-search { display: flex; gap: 8px; width: 100%; }
.brain-search input { flex: 1; padding: 9px 14px; border: 1px solid var(--line); border-radius: 999px; font: inherit;
  background: rgba(8,14,28,.8); color: var(--ink); }
.brain-search input::placeholder { color: #5f7091; }
.brain-search input:focus-visible { outline: none; border-color: var(--focus); box-shadow: 0 0 0 3px rgba(255,111,97,.18); }
.brain-go { padding: 9px 16px; border: 1px solid var(--focus); background: var(--focus); color: #12100f; border-radius: 999px; font-weight: 700; cursor: pointer; }

/* Autocompletado del buscador: lista oscura bajo el input. */
.brain-ac { position: absolute; top: calc(100% + 8px); left: 0; right: 0; z-index: 30; max-height: 60vh; overflow: auto;
  background: rgba(9,15,28,.97); border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 18px 50px rgba(0,0,0,.6); padding: 6px; backdrop-filter: blur(10px); }
.brain-ac[hidden] { display: none; }
.brain-ac-item { display: flex; justify-content: space-between; align-items: center; gap: 12px; width: 100%; text-align: left;
  padding: 9px 12px; border: 0; border-radius: 9px; background: transparent; color: var(--ink); font: inherit; cursor: pointer; }
.brain-ac-item .ai-t { flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.brain-ac-item .ai-c { flex: 0 1 auto; max-width: 42%; min-width: 0; font-size: .72rem; color: var(--muted); background: rgba(40,58,92,.6); padding: 2px 9px; border-radius: 999px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.brain-ac-item:hover, .brain-ac-item.act { background: rgba(78,161,255,.16); }
.brain-ac-item.act { box-shadow: inset 0 0 0 1px var(--parent); }
.brain-ac-empty { padding: 10px 12px; color: var(--muted); font-size: .85rem; }
.brain-modes { display: flex; gap: 6px; }
.brain-modes button { padding: 8px 14px; border: 1px solid var(--line); background: rgba(20,30,50,.6); color: var(--ink); border-radius: 999px; font: inherit; cursor: pointer; transition: background .2s, color .2s, border-color .2s; }
.brain-modes button:hover { border-color: var(--focus); }
.brain-modes button[aria-pressed="true"] { background: var(--focus); color: #12100f; border-color: var(--focus); font-weight: 700; }

/* ── Breadcrumb = la "ruta activa" de TheBrain. ── */
.brain-path { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; padding: 8px clamp(12px, 4vw, 30px);
  background: rgba(8,13,26,.55); border-bottom: 1px solid var(--line); font-size: .85rem; }
.brain-path:empty { display: none; }
.brain-path .crumb { color: var(--ink); text-decoration: none; padding: 3px 12px; border-radius: 999px; background: rgba(28,42,70,.7); border: 1px solid var(--line); max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; transition: border-color .2s, color .2s; }
.brain-path .crumb:hover { border-color: var(--focus); color: #fff; }
.brain-path .sep { color: var(--muted); }
.brain-path .crumb.now { font-weight: 700; color: #12100f; background: var(--focus); border-color: var(--focus); }

/* ── Historial de navegación (jump history: atrás / adelante / inicio) ── */
.brain-nav { display: flex; gap: 6px; align-items: center; }
.brain-nav button {
    width: 36px; height: 36px; border-radius: 50%; cursor: pointer; flex-shrink: 0;
    display: grid; place-items: center; font-size: 17px; line-height: 1;
    background: rgba(255,255,255,0.04); border: 1px solid var(--line); color: #cbd5e1; transition: border-color .2s, color .2s, background .2s;
}
.brain-nav button:hover:not(:disabled) { border-color: var(--focus); color: #fff; background: rgba(14,165,233,0.10); }
.brain-nav button:disabled { opacity: .3; cursor: default; }
.brain-nav .bnav-home { font-size: 15px; }

/* ── Capa-mundo 2D: se arrastra (pan) y escala (zoom) completa; nodos + conectores viajan juntos. ── */
.brain-world { position: absolute; inset: 0; z-index: 1; transform-origin: 50% 50%; will-change: transform; touch-action: none; }
.brain-world.panning { cursor: grabbing; }

/* HUD de zoom/posición (visible en foco y malla 2D). */
.brain-view { position: absolute; right: 14px; bottom: 14px; z-index: 30; display: flex; gap: 6px; }
.brain-view button {
    width: 38px; height: 38px; border-radius: 50%; cursor: pointer; font-size: 18px; line-height: 1;
    display: grid; place-items: center; color: #cbd5e1; background: rgba(12,20,38,.82);
    border: 1px solid var(--line); backdrop-filter: blur(4px); transition: border-color .2s, color .2s, background .2s;
}
.brain-view button:hover { border-color: var(--focus); color: #fff; background: rgba(14,165,233,.16); }
.brain-view .v-reset { font-size: 15px; }
.brain-page.mode-3d .brain-view, .brain-page.is-landing .brain-view { display: none; }

/* Chips de ampliar/plegar por zona (anti-caos, estilo TheBrain). */
.z-toggle {
    position: absolute; z-index: 3; transform: translate(-50%, -50%); cursor: pointer;
    padding: 4px 12px; border-radius: 999px; font-size: .74rem; font-weight: 700; letter-spacing: .2px; white-space: nowrap;
    color: var(--ink); background: rgba(20,32,58,.86); border: 1px dashed var(--line); transition: border-color .18s, color .18s, background .18s;
}
.z-toggle:hover { border-style: solid; border-color: var(--focus); color: #fff; background: rgba(14,165,233,.16); }
.z-toggle.zt-parent { color: var(--parent); } .z-toggle.zt-child { color: var(--child); }
.z-toggle.zt-related { color: var(--rel); } .z-toggle.zt-sib { color: var(--sib); }

/* Etiquetas de una palabra en la malla 3D (proyectadas cada frame). */
.b3d-lab { position: absolute; top: 0; left: 0; padding: 1px 7px; border-radius: 8px; font-size: .72rem; line-height: 1.1; white-space: nowrap;
    color: #e6edf6; background: rgba(8,14,26,.55); border: 1px solid rgba(255,255,255,.08); box-shadow: 0 1px 6px rgba(0,0,0,.4); }
.b3d-lab.is-focus { font-size: .82rem; font-weight: 800; color: #fff; background: rgba(191,64,24,.5); border-color: rgba(255,120,60,.5); }
/* La capa de etiquetas no intercepta (pointer-events:none), pero el nombre del FOCO sí es puerta tocable. */
.b3d-lab .b3d-lab-link { color: inherit; text-decoration: none; pointer-events: auto; display: inline-block; padding: 2px 4px; border-radius: 6px; }
.b3d-lab .b3d-lab-link:hover, .b3d-lab .b3d-lab-link:focus-visible { text-decoration: underline; outline: none; box-shadow: 0 0 0 2px rgba(255,120,60,.6); }

/* Ficha flotante por demora (malla 3D): se ancla sobre la esfera tras dejar el cursor quieto. */
.brain-dwell { position: absolute; top: 0; left: 0; z-index: 9; transform: translate(-50%, calc(-100% - 16px));
  min-width: 150px; max-width: 240px; padding: 9px 11px 8px; border-radius: 12px; text-align: center;
  background: linear-gradient(180deg, rgba(20,32,56,.97), rgba(11,19,38,.97)); border: 1px solid rgba(255,255,255,.14);
  box-shadow: 0 8px 26px rgba(0,0,0,.55); backdrop-filter: blur(6px); pointer-events: auto; cursor: default; }
.brain-dwell::after { content: ''; position: absolute; left: 50%; bottom: -7px; width: 12px; height: 12px; transform: translateX(-50%) rotate(45deg);
  background: rgba(11,19,38,.97); border-right: 1px solid rgba(255,255,255,.14); border-bottom: 1px solid rgba(255,255,255,.14); }
.brain-dwell .bdw-t { display: block; font-size: .82rem; font-weight: 700; color: #fff; line-height: 1.2; margin-bottom: 7px; }
.brain-dwell .bdw-x { position: absolute; top: 2px; right: 4px; border: 0; background: none; color: var(--muted); font-size: 18px; line-height: 1; cursor: pointer; padding: 4px; }
.brain-dwell .bdw-x:hover { color: #fff; }
.brain-dwell .bdw-acts { display: flex; gap: 6px; justify-content: center; }
.brain-dwell .bdw-acts a { font-size: .74rem; text-decoration: none; padding: 4px 9px; border-radius: 999px; white-space: nowrap; transition: filter .15s, transform .1s; }
.brain-dwell .bdw-acts a:hover { filter: brightness(1.15); transform: translateY(-1px); }
.brain-dwell .bdw-oa { color: #fff; background: #BF4018; }
.brain-dwell .bdw-mx { color: #e6edf6; background: rgba(19,138,114,.85); }

/* Nodos hijos de una expansión en el sitio (más compactos) + sus conectores. */
.brain-node.exp-child { max-width: min(152px, 42vw); padding: 6px 11px; background: linear-gradient(180deg, rgba(24,38,64,.92), rgba(13,23,44,.92)); }
.brain-node.exp-child .t { font-size: .8rem; }
.brain-node.is-expanded { box-shadow: 0 3px 14px rgba(0,0,0,.5), 0 0 0 2px var(--focus), 0 0 16px rgba(14,165,233,.35); }
.brain-svg path.exp  { fill: none; stroke-width: 1.4; opacity: .55; }
.brain-svg path.exp.parent { stroke: var(--parent); }
.brain-svg path.exp.child  { stroke: var(--child); }
.brain-svg path.exp.rel    { stroke: var(--rel); stroke-dasharray: 5 5; }

/* ── Escenario espacial. ── */
.brain-stage { position: relative; flex: 1; overflow: hidden; min-height: 560px;
  background: radial-gradient(1100px 620px at 50% 44%, #14243f 0%, #0a1424 46%, #05080f 100%); }
.brain-stage::before, .brain-stage::after { content: ""; position: absolute; inset: -10%; pointer-events: none; z-index: 0; }
.brain-stage::before { background-image:
    radial-gradient(1.5px 1.5px at 15% 22%, rgba(255,255,255,.7), transparent),
    radial-gradient(1.5px 1.5px at 72% 18%, rgba(255,255,255,.55), transparent),
    radial-gradient(1.2px 1.2px at 40% 68%, rgba(180,210,255,.6), transparent),
    radial-gradient(1.6px 1.6px at 88% 60%, rgba(255,255,255,.5), transparent),
    radial-gradient(1.2px 1.2px at 26% 84%, rgba(255,255,255,.45), transparent),
    radial-gradient(1.3px 1.3px at 60% 34%, rgba(160,200,255,.5), transparent),
    radial-gradient(1.4px 1.4px at 5% 55%, rgba(255,255,255,.4), transparent);
  opacity: .7; animation: brainTwinkle 6s ease-in-out infinite alternate; }
.brain-stage::after { background: radial-gradient(600px 300px at 50% 42%, rgba(78,161,255,.10), transparent 70%); }
@keyframes brainTwinkle { from { opacity: .35; } to { opacity: .8; } }

.brain-svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; z-index: 1; }
.brain-svg path { fill: none; stroke-width: 2; opacity: .5; transition: opacity .3s; }
.brain-svg path.parent { stroke: var(--parent); color: var(--parent); filter: drop-shadow(0 0 4px var(--parent)); }
.brain-svg path.child  { stroke: var(--child);  color: var(--child);  filter: drop-shadow(0 0 4px var(--child)); }
.brain-svg path.rel    { stroke: var(--rel);    color: var(--rel);    stroke-dasharray: 6 6; filter: drop-shadow(0 0 3px var(--rel)); }
.brain-svg path.sib    { stroke: var(--sib);    opacity: .32; stroke-dasharray: 2 5; }
/* Malla 2D: rayos del árbol radial (spokes) + enlaces laterales casi invisibles (weak). */
.brain-svg path.spoke  { fill: none; stroke-width: 1.7; opacity: .6; }
.brain-svg path.spoke.req  { stroke: var(--parent); }
.brain-svg path.spoke.nxt  { stroke: var(--child); }
.brain-svg path.spoke.rel2 { stroke: var(--rel); stroke-dasharray: 5 5; }
.brain-svg path.weak   { fill: none; stroke: var(--sib); stroke-width: 1; opacity: .12; stroke-dasharray: 2 7; }

/* ── Burbujas-puerta (pastilla con halo). ── */
.brain-node { position: absolute; z-index: 2; max-width: min(188px, 40vw); padding: 8px 13px; border-radius: 999px;
  display: flex; flex-direction: column; gap: 2px; text-align: center; align-items: center;
  background: linear-gradient(180deg, rgba(34,50,84,.92), rgba(18,30,54,.92)); border: 1px solid var(--line); color: var(--ink);
  box-shadow: 0 3px 14px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.06); backdrop-filter: blur(4px);
  cursor: pointer; text-decoration: none; transform: translate(-50%, -50%);
  transition: left .55s cubic-bezier(.22,.61,.36,1), top .55s cubic-bezier(.22,.61,.36,1), opacity .45s ease, transform .22s ease, box-shadow .22s ease, border-color .22s ease; }
.brain-node .row { display: flex; align-items: center; gap: 8px; }
.brain-node .dot { width: 9px; height: 9px; border-radius: 50%; flex: 0 0 auto; background: var(--sib); }
.brain-node .t { font-weight: 600; font-size: .86rem; line-height: 1.18; }
.brain-node .kind, .brain-node .q, .brain-node .acts { display: none; }
.brain-node:hover, .brain-node:focus-visible { z-index: 6; border-radius: 18px; transform: translate(-50%, -50%) scale(1.06);
  box-shadow: 0 10px 34px rgba(0,0,0,.62), 0 0 0 3px rgba(255,255,255,.05), 0 0 22px var(--halo, transparent); outline: none; }
.brain-node:hover .kind, .brain-node:focus-visible .kind,
.brain-node:hover .q, .brain-node:focus-visible .q,
.brain-node:hover .acts, .brain-node:focus-visible .acts { display: block; }
.brain-node .kind { font-size: .72rem; font-weight: 700; letter-spacing: .3px; text-transform: uppercase; }
.brain-node .q { font-size: .8rem; color: var(--muted); line-height: 1.25; }
.brain-node .acts { display: none; gap: 12px; margin-top: 4px; }
.brain-node:hover .acts, .brain-node:focus-visible .acts { display: flex; }
.brain-node .acts a { font-size: .76rem; text-decoration: none; color: var(--muted); }
.brain-node .acts a:hover { color: var(--ink); }
.brain-node .door { color: var(--focus) !important; font-weight: 700; }
.brain-node .pin { border: 0; background: none; padding: 0; margin: 0; font: inherit; font-size: .76rem; line-height: 1; color: var(--muted); cursor: pointer; opacity: .8; transition: color .15s, transform .15s, opacity .15s; }
.brain-node .pin:hover { color: var(--ink); opacity: 1; transform: scale(1.12); }
.brain-node .pin.on { color: var(--rel); opacity: 1; text-shadow: 0 0 8px rgba(244,183,64,.6); }
.brain-node .pin:disabled { opacity: .4; cursor: progress; }

/* Aviso flotante (pin / sesión). Por encima del chip y la bottom-nav móviles. */
.brain-flash { position: fixed; left: 50%; bottom: 74px; transform: translate(-50%, 20px); z-index: 120;
  background: rgba(12,20,36,.94); color: var(--ink); padding: 10px 18px; border-radius: 999px; font-size: .86rem; max-width: 90%;
  text-align: center; border: 1px solid var(--line); box-shadow: 0 12px 40px rgba(0,0,0,.55); opacity: 0; pointer-events: none;
  transition: opacity .3s, transform .3s; backdrop-filter: blur(8px); }
.brain-flash.show { opacity: 1; transform: translate(-50%, 0); }
.brain-flash.bad { border-color: #ff7a6b; color: #ffd7d1; }

.brain-node.zone-parent { border-color: color-mix(in srgb, var(--parent) 60%, transparent); --halo: rgba(78,161,255,.35); }
.brain-node.zone-parent .dot { background: var(--parent); box-shadow: 0 0 9px var(--parent); } .brain-node.zone-parent .kind { color: var(--parent); }
.brain-node.zone-child  { border-color: color-mix(in srgb, var(--child) 60%, transparent); --halo: rgba(58,210,159,.35); }
.brain-node.zone-child .dot { background: var(--child); box-shadow: 0 0 9px var(--child); } .brain-node.zone-child .kind { color: var(--child); }
.brain-node.zone-related { border-color: color-mix(in srgb, var(--rel) 60%, transparent); --halo: rgba(244,183,64,.32); }
.brain-node.zone-related .dot { background: var(--rel); box-shadow: 0 0 9px var(--rel); } .brain-node.zone-related .kind { color: var(--rel); }
.brain-node.zone-sibling { border-style: dashed; }
.brain-node.zone-sibling .dot { background: var(--sib); } .brain-node.zone-sibling .kind { color: var(--sib); }

/* Foco: la burbuja grande y encendida del centro. */
.brain-node.center { background: linear-gradient(180deg, #223456, #101d33); border: 1.5px solid var(--focus); --halo: rgba(255,111,97,.5);
  padding: 15px 22px; font-size: 1.05rem; max-width: min(330px, 74vw); border-radius: 20px; z-index: 5;
  box-shadow: 0 0 0 3px rgba(255,111,97,.14), 0 12px 44px rgba(0,0,0,.6), 0 0 30px rgba(255,111,97,.3); }
.brain-node.center .dot { background: var(--focus); box-shadow: 0 0 12px var(--focus); }
.brain-node.center .t { font-size: 1.1rem; }
.brain-node.center .acts { display: flex; }
.brain-node.center .acts .door { display: none; }

.brain-hint, .brain-tip { position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%); z-index: 7;
  background: rgba(12,20,36,.82); color: var(--muted); padding: 8px 16px; border-radius: 999px; font-size: .82rem; max-width: 90%; text-align: center; border: 1px solid var(--line); backdrop-filter: blur(6px); }
.brain-legend { display: flex; gap: 14px; flex-wrap: wrap; padding: 9px clamp(12px, 4vw, 30px); font-size: .8rem; color: var(--muted); background: rgba(8,13,26,.6); border-top: 1px solid var(--line); }
.brain-legend i { display: inline-block; width: 11px; height: 11px; border-radius: 50%; margin-right: 5px; vertical-align: -1px; box-shadow: 0 0 8px currentColor; }

/* Estado vacío / arranque sin semilla. */
.brain-empty { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; gap: 12px; padding: 24px; z-index: 3; }
.brain-empty h2 { margin: 0; font-size: 1.6rem; } .brain-empty p { color: var(--muted); max-width: 50ch; margin: 0 auto; }
.brain-empty .sugg { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-top: 8px; }
.brain-empty .sugg a { padding: 8px 14px; border: 1px solid var(--line); border-radius: 999px; text-decoration: none; color: var(--ink); background: rgba(28,42,70,.7); transition: border-color .2s, color .2s; }
.brain-empty .sugg a:hover { border-color: var(--focus); color: #fff; }

/* ═══ LANDING DE LA MATRIX (sin semilla): hero neón + lluvia digital ═══ */
.brain-page.is-landing .brain-legend { display: none; }
.brain-page.is-landing .brain-stage { min-height: calc(100vh - 130px); }
.brain-page.is-landing .brain-stage::before { opacity: .28; }   /* estrellas tenues tras la lluvia */
.matrix-hero { position: absolute; inset: 0; z-index: 3; overflow: hidden; display: grid; place-items: center; padding: clamp(20px,5vh,60px) 18px; }
.matrix-rain { position: absolute; inset: 0; width: 100%; height: 100%; display: block; opacity: .48; }
.hero-inner { position: relative; z-index: 2; width: 100%; max-width: 940px; text-align: center; }
.hero-kicker { letter-spacing: .38em; text-transform: uppercase; font-size: .72rem; color: #39d98a; margin-bottom: 14px; text-shadow: 0 0 12px rgba(57,217,138,.5); }
.hero-title { margin: 0; font-weight: 900; line-height: .9; letter-spacing: .01em; font-size: clamp(2.9rem, 11vw, 7.2rem); color: #eafcff; text-shadow: 0 0 30px rgba(120,220,255,.25); }
.hero-title .mx { position: relative; display: inline-block; color: #00ff9c; text-shadow: 0 0 18px rgba(0,255,156,.55), 0 0 48px rgba(0,255,156,.3); }
.hero-title .mx::before, .hero-title .mx::after { content: attr(data-text); position: absolute; left: 0; top: 0; width: 100%; overflow: hidden; pointer-events: none; }
.hero-title .mx::before { color: #ff2f6d; clip-path: inset(0 0 56% 0); animation: heroGlitch 3.3s infinite steps(2); }
.hero-title .mx::after  { color: #22d3ee; clip-path: inset(56% 0 0 0);  animation: heroGlitch 2.7s infinite steps(2) reverse; }
@keyframes heroGlitch { 0%,90%,100% { transform: none; opacity: 0; } 91% { transform: translate(-2px,1px); opacity: .85; } 95% { transform: translate(3px,-1px); opacity: .7; } }
.hero-tag { margin: 20px auto 28px; max-width: 60ch; color: #cfe6dc; font-size: clamp(1rem, 2.4vw, 1.22rem); line-height: 1.55; }
.hero-tag b { color: #fff; }
.hero-cta { cursor: pointer; font: inherit; font-weight: 800; letter-spacing: .01em; color: #04140c; padding: 14px 28px; border-radius: 999px; border: 1px solid #00ff9c;
  background: linear-gradient(180deg, #4dffb8, #00e188); box-shadow: 0 0 0 4px rgba(0,255,156,.14), 0 12px 34px rgba(0,225,136,.3); transition: transform .18s, box-shadow .18s; }
.hero-cta:hover { transform: translateY(-2px) scale(1.02); box-shadow: 0 0 0 6px rgba(0,255,156,.22), 0 16px 44px rgba(0,225,136,.42); }
.hero-cta:focus-visible { outline: none; }
.hero-doors { margin-top: 44px; }
.doors-label { font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: #7fbfa2; margin-bottom: 16px; }
.doors-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(212px, 1fr)); gap: 12px; text-align: left; }
.door-card { display: flex; gap: 10px; align-items: center; padding: 14px 16px; border-radius: 14px; text-decoration: none; color: var(--ink);
  background: linear-gradient(180deg, rgba(20,40,34,.72), rgba(10,22,26,.74)); border: 1px solid rgba(57,217,138,.22); backdrop-filter: blur(3px);
  transition: transform .18s, border-color .18s, box-shadow .18s, background .18s; }
.door-card:hover { transform: translateY(-3px); border-color: #00ff9c; box-shadow: 0 12px 30px rgba(0,0,0,.5), 0 0 22px rgba(0,255,156,.25); background: linear-gradient(180deg, rgba(26,56,44,.86), rgba(12,26,30,.86)); }
.door-card:focus-visible { outline: none; border-color: #00ff9c; box-shadow: 0 0 0 3px rgba(0,255,156,.3); }
.dc-ico { flex: 0 0 auto; color: #00ff9c; font-size: 1rem; text-shadow: 0 0 10px rgba(0,255,156,.6); }
.dc-body { min-width: 0; display: flex; flex-direction: column; }
.dc-t { font-weight: 600; font-size: .92rem; line-height: 1.2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dc-c { font-size: .74rem; color: #8fb8a8; margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hero-legend { display: flex; gap: 22px; flex-wrap: wrap; justify-content: center; margin-top: 36px; color: #7f97b5; font-size: .82rem; }
@media (prefers-reduced-motion: reduce) { .hero-title .mx::before, .hero-title .mx::after { animation: none; opacity: 0; } }

.brain-boot { position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); color: var(--muted); z-index: 3; }
.matrix-hero ~ .brain-boot { display: none; }   /* el landing ya no es "cargando", es una pantalla completa */
.brain-err { color: #ff7a6b; }

/* Panel de ayuda del modo 3D (sólo visible con .mode-3d; descartable con .off). */
.brain-3d-help { display: none; position: absolute; top: 16px; left: 16px; z-index: 8; max-width: 290px; padding: 14px 16px 15px; border-radius: 14px;
  background: rgba(10,16,30,.86); border: 1px solid var(--line); box-shadow: 0 12px 40px rgba(0,0,0,.5); backdrop-filter: blur(8px); color: var(--ink); font-size: .82rem; }
.brain-page.mode-3d .brain-3d-help { display: block; }
.brain-page.mode-3d .brain-legend { display: none; }   /* el panel 3D lleva su propia clave por anillos */
/* El canvas GL necesita touch-action:none: sin él el navegador se queda el gesto táctil (scroll) y cancela el puntero. */
.brain-gl { touch-action: none; }
/* Botón para reabrir la ayuda 3D: sólo en pantallas angostas (allí el panel arranca plegado). */
.b3d-help-btn { display: none; position: absolute; top: 10px; left: 10px; z-index: 9; width: 34px; height: 34px;
  border-radius: 50%; border: 1px solid var(--line); background: rgba(10,16,30,.86); color: var(--ink); font: 700 1rem/1 inherit; cursor: pointer; }
.b3d-help-btn:hover { border-color: var(--focus); color: #fff; }
.brain-page:not(.mode-3d) .b3d-help-btn { display: none !important; }
@media (hover: none), (max-width: 700px) {
  .brain-page.mode-3d .brain-view { display: flex; }   /* en táctil el 3D sí necesita botones de zoom/recentrar */
  /* dedo: dianas mínimas de 44px y aire alrededor del botón ×, para no tocarlo por error */
  .brain-dwell { min-width: 178px; padding: 10px 12px 10px; }
  .brain-dwell .bdw-acts a { padding: 10px 14px; font-size: .8rem; }
  .brain-dwell .bdw-x { top: 0; right: 0; padding: 8px; }
}
@media (max-width: 700px) {
  .brain-stage { min-height: 0; height: 64svh; }   /* antes 560px: con header+breadcrumb se comía la pantalla y había que scrollear para girar */
  .brain-3d-help { top: 8px; left: 8px; right: auto; max-width: min(76vw, 260px); padding: 9px 30px 9px 12px; }
  .brain-3d-help .b3d-sub { display: inline; margin: 0 0 0 6px; }
  .b3d-controls, .b3d-key { display: none; }        /* el panel no debe saturar el lienzo en móvil; se reabre con el botón ? */
  .brain-3d-help.off ~ .b3d-help-btn { display: grid; place-items: center; }   /* con el panel cerrado, el botón lo reabre (solo móvil) */
}
.brain-3d-help.off { display: none !important; }
.brain-3d-help .b3d-x { position: absolute; top: 4px; right: 8px; border: 0; background: none; color: var(--muted); font-size: 20px; line-height: 1; cursor: pointer; }
.brain-3d-help .b3d-x:hover { color: var(--ink); }
.b3d-title { font-weight: 800; font-size: 1rem; }
.b3d-sub { display: block; font-weight: 500; color: var(--muted); font-size: .76rem; margin: 2px 0 10px; }
.b3d-controls { margin: 0 0 12px; padding-left: 18px; }
.b3d-controls li { margin: 3px 0; line-height: 1.3; }
.b3d-controls b { color: #fff; }
.b3d-key > span { display: block; color: var(--muted); margin-bottom: 7px; }
.b3d-sw { display: flex; flex-wrap: wrap; gap: 5px 12px; }
.b3d-it { display: inline-flex; align-items: center; gap: 5px; }
.b3d-it i { width: 11px; height: 11px; border-radius: 50%; box-shadow: 0 0 8px currentColor; }
.brain-notice { padding: 10px clamp(12px, 4vw, 30px); color: var(--muted); font-size: .85rem; }

/* SSR del vecindario: con JS se esconde (brain.js pinta el escenario). Sin JS, el <style> del <noscript>
   de la vista lo muestra como lista estática — por eso el override vive ahí, no aquí. */
.brain-ssr { display: none; }