/* =============================================================================
 * RIZOMA MAUX v1.12.0 · Plano cartesiano estilo GeoGebra (prefijo «pl-»)
 * -----------------------------------------------------------------------------
 * Lo dibuja js/core/stem_render.js (bloques ```grafica y ```datos): cuadrícula
 * mayor y menor (papel milimetrado), reglas sobre los ejes, panel flotante de
 * herramientas, tarjeta del objeto seleccionado y paleta de estilos.
 * Colores de css/tokens.css; tema claro y oscuro; compacto en celulares.
 * ========================================================================== */

/* ---------- Figura y lienzo ---------- */
.stem-graf.pl-fig { margin: 0; max-width: 820px; position: relative; }
.pl-plano {
  position: relative; border-radius: 16px; overflow: hidden; line-height: 0; outline: none;
  background: var(--surface-solid); border: 1px solid var(--borde); box-shadow: var(--sombra);
  touch-action: pan-y; /* sin activar, un dedo desplaza la página */
  transition: box-shadow var(--t), border-color var(--t);
}
.pl-plano.activo, .pl-plano.pl-mano { touch-action: none; }
.pl-plano.activo { border-color: rgba(37, 99, 235, .45); box-shadow: 0 0 0 3px rgba(37, 99, 235, .14), var(--sombra); }
.pl-plano:focus-visible { box-shadow: 0 0 0 3px var(--oro), var(--sombra); }
.pl-svg { line-height: 0; }
.pl-svg svg { display: block; width: 100%; height: auto; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
.pl-plano.moviendo .pl-svg { cursor: grabbing !important; }

/* ---------- Colores del SVG según el tema ---------- */
.stem-svg .sg-fondo { fill: var(--surface-solid); }
.stem-svg .sg-cuad2 { stroke: #e8edf4; }
.stem-svg .sg-cuad { stroke: #cdd6e2; }
.stem-svg .sg-marco { stroke: var(--borde-2); }
.stem-svg .sg-ejes { stroke: #1e293b; fill: #1e293b; }
.stem-svg .sg-num { fill: #334155; }
.stem-svg .sg-titulo, .stem-svg .sg-etq-eje, .stem-svg .sg-etq-punto, .stem-svg .sg-ley-txt { fill: var(--texto); }
.stem-svg text[paint-order] { stroke: var(--surface-solid); }
.stem-svg .sg-ley-caja { fill: var(--surface-solid); stroke: var(--borde-2); }
.stem-svg .sg-punto, .stem-svg .sg-borde-punto { stroke: var(--surface-solid); }
.stem-svg .sg-anillo { fill: var(--surface-solid); }
.stem-svg .sg-mira { stroke: var(--texto-3); }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .stem-svg .sg-cuad2 { stroke: rgba(148, 163, 184, .11); }
  :root:not([data-theme="light"]) .stem-svg .sg-cuad { stroke: rgba(148, 163, 184, .27); }
  :root:not([data-theme="light"]) .stem-svg .sg-ejes { stroke: #cbd5e1; fill: #cbd5e1; }
  :root:not([data-theme="light"]) .stem-svg .sg-num { fill: var(--texto-2); }
}
:root[data-theme="dark"] .stem-svg .sg-cuad2 { stroke: rgba(148, 163, 184, .11); }
:root[data-theme="dark"] .stem-svg .sg-cuad { stroke: rgba(148, 163, 184, .27); }
:root[data-theme="dark"] .stem-svg .sg-ejes { stroke: #cbd5e1; fill: #cbd5e1; }
:root[data-theme="dark"] .stem-svg .sg-num { fill: var(--texto-2); }

/* ---------- Panel flotante de herramientas ---------- */
.pl-panel {
  position: absolute; top: 10px; right: 10px; z-index: 3;
  display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 4px;
  border-radius: 14px; line-height: 1;
  background: rgba(255, 255, 255, .86); background: color-mix(in srgb, var(--surface-solid) 84%, transparent);
  -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur);
  border: 1px solid var(--borde); box-shadow: 0 6px 22px rgba(15, 23, 42, .14);
}
.pl-btn {
  width: 32px; height: 32px; display: grid; place-items: center; padding: 0;
  border: 0; border-radius: 10px; background: transparent; color: var(--texto-2); cursor: pointer;
  transition: background var(--t), color var(--t), transform .12s, box-shadow var(--t);
}
.pl-btn:hover { background: var(--surface-2); color: var(--marca-2); }
.pl-btn:active { transform: scale(.9); }
.pl-btn:focus-visible { outline: 2px solid var(--marca-2); outline-offset: 1px; }
.pl-btn.on { background: linear-gradient(135deg, var(--marca-2), #4f46e5); color: #fff; box-shadow: 0 3px 10px rgba(37, 99, 235, .35); }
.pl-ico { width: 18px; height: 18px; display: block; }
.pl-sep { width: 20px; height: 1px; background: var(--borde-2); margin: 2px 0; flex: none; }
.pl-btn[data-accion="mas"] { display: none; }

/* Compacto (lienzos de menos de 600 px: celulares, paneles estrechos, gráficos de «datos») */
.pl-compacto .pl-panel { top: 6px; right: 6px; padding: 3px; border-radius: 12px; }
.pl-compacto .pl-btn { width: 30px; height: 30px; }
.pl-compacto .pl-ico { width: 16px; height: 16px; }
.pl-compacto .pl-btn[data-accion="mas"] { display: grid; }
.pl-compacto .pl-panel:not(.abierto) .pl-btn[data-grupo="b"],
.pl-compacto .pl-panel:not(.abierto) .pl-sep { display: none; }
.pl-compacto .pl-panel.abierto { flex-direction: row; flex-wrap: wrap; justify-content: flex-end; max-width: calc(100% - 12px); }
.pl-compacto .pl-panel.abierto .pl-sep { width: 1px; height: 20px; margin: 0 2px; }

/* ---------- Tarjeta del objeto seleccionado ---------- */
.pl-info {
  position: absolute; left: 10px; bottom: 10px; z-index: 3;
  display: flex; align-items: center; gap: 8px; max-width: calc(100% - 64px);
  padding: 6px 6px 6px 10px; border-radius: 12px; line-height: 1.3; font-size: .8rem; color: var(--texto);
  background: var(--surface-solid); background: color-mix(in srgb, var(--surface-solid) 92%, transparent);
  -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur);
  border: 1px solid var(--borde); box-shadow: var(--sombra-2); animation: pl-entra .18s ease;
}
.pl-info[hidden] { display: none; }
.pl-info-color { flex: none; width: 12px; height: 12px; border-radius: 50%; background: var(--c); box-shadow: 0 0 0 3px rgba(148, 163, 184, .25); }
.pl-info-txt { display: grid; min-width: 0; gap: 1px; }
.pl-info-txt b { font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pl-info-txt span { font-family: var(--font-mono); font-size: .72rem; color: var(--texto-2); overflow-wrap: anywhere; }
.pl-btn-s { width: 28px; height: 28px; flex: none; }
.pl-btn-s .pl-ico { width: 15px; height: 15px; }

/* ---------- Aviso breve (rueda sin activar, herramienta elegida) ---------- */
.pl-aviso {
  position: absolute; left: 50%; top: 50%; z-index: 4; transform: translate(-50%, -50%) scale(.96);
  max-width: min(86%, 420px); padding: 10px 14px; border-radius: 12px; pointer-events: none;
  background: rgba(15, 23, 42, .84); color: #fff; font-size: .84rem; line-height: 1.35; text-align: center;
  opacity: 0; transition: opacity .2s, transform .2s;
}
.pl-aviso.visible { opacity: 1; transform: translate(-50%, -50%) scale(1); }

/* ---------- Barra inferior: coordenadas y escala ---------- */
.pl-barra { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 4px 12px; margin-top: 6px; padding: 0 4px; }
.pl-barra .stem-graf-coord { font: 500 .74rem var(--font-mono); color: var(--texto-2); min-height: 1.2em; overflow-wrap: anywhere; }
.pl-escala { font: 600 .7rem var(--font-mono); color: var(--texto-3); white-space: nowrap; }

/* ---------- Deslizadores ---------- */
.pl-desl { display: grid; gap: 8px; margin-top: 10px; padding: 12px 14px; border-radius: 14px; background: var(--surface-2); border: 1px solid var(--borde); }
.pl-desl-fila { display: grid; grid-template-columns: minmax(28px, auto) 1fr 64px 34px; align-items: center; gap: 12px; font-size: .9rem; }
.pl-desl .stem-desl-nom { font-weight: 700; font-style: italic; color: var(--marca); }
.pl-desl output { font: 600 .82rem var(--font-mono); text-align: right; color: var(--texto); }
.pl-desl input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; height: 28px; margin: 0; background: transparent; cursor: pointer; --pct: 50%; }
.pl-desl input[type=range]:focus-visible { outline: 2px solid var(--marca-2); outline-offset: 2px; border-radius: 8px; }
.pl-desl input[type=range]::-webkit-slider-runnable-track { height: 6px; border-radius: 99px; background: linear-gradient(90deg, var(--marca-2) var(--pct), var(--borde-2) var(--pct)); }
.pl-desl input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 20px; height: 20px; margin-top: -7px; border-radius: 50%; background: #fff; border: 2px solid var(--marca-2); box-shadow: 0 2px 6px rgba(15, 23, 42, .25); transition: transform .12s; }
.pl-desl input[type=range]:active::-webkit-slider-thumb { transform: scale(1.15); }
.pl-desl input[type=range]::-moz-range-track { height: 6px; border-radius: 99px; background: var(--borde-2); }
.pl-desl input[type=range]::-moz-range-progress { height: 6px; border-radius: 99px; background: var(--marca-2); }
.pl-desl input[type=range]::-moz-range-thumb { width: 16px; height: 16px; border-radius: 50%; background: #fff; border: 2px solid var(--marca-2); box-shadow: 0 2px 6px rgba(15, 23, 42, .25); }
.pl-play { display: grid; place-items: center; width: 32px; height: 32px; min-width: 0; padding: 0; border-radius: 50%; }
.pl-play .pl-ico { width: 14px; height: 14px; }
.pl-play.on { background: var(--marca-2); color: #fff; border-color: transparent; }

/* ---------- Paleta de estilos ---------- */
.pl-estilos {
  position: absolute; top: 10px; right: 54px; z-index: 6; width: 312px; max-height: min(78vh, 640px);
  display: flex; flex-direction: column; overflow: hidden;
  border-radius: 16px; background: var(--surface-solid); border: 1px solid var(--borde); box-shadow: var(--sombra-2);
  font-size: .84rem; line-height: 1.35; color: var(--texto); animation: pl-entra .18s ease;
}
.pl-estilos[hidden] { display: none; }
.pl-pal-cab { display: flex; align-items: center; justify-content: space-between; padding: 6px 6px 6px 14px; border-bottom: 1px solid var(--borde); background: linear-gradient(135deg, rgba(37, 99, 235, .08), rgba(124, 58, 237, .08)); }
.pl-pal-tit { display: flex; align-items: center; gap: 8px; font-weight: 700; font-family: var(--font-display); font-size: .95rem; }
.pl-pal-tit .pl-ico { color: var(--marca-2); }
.pl-pal-cuerpo { padding: 12px 14px; overflow: auto; display: grid; gap: 12px; }
.pl-pal-nota { margin: 0; color: var(--texto-2); }
.pl-etq { display: flex; align-items: center; gap: 6px; font-size: .68rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--texto-2); }
.pl-etq .pl-ico { width: 14px; height: 14px; }
.pl-sec { display: grid; gap: 7px; }
.pl-sec-plano { padding-top: 10px; border-top: 1px dashed var(--borde-2); }
.pl-campo { display: grid; grid-template-columns: 82px 1fr 56px; align-items: center; gap: 10px; }
.pl-campo output { font: 600 .76rem var(--font-mono); text-align: right; color: var(--texto); }
.pl-campo input[type=range] { width: 100%; accent-color: var(--marca-2); margin: 0; }
.pl-campo-obj, .pl-sec-plano .pl-campo { grid-template-columns: 1fr; gap: 5px; }
.pl-sec-plano .pl-campo { grid-template-columns: auto 1fr; }
.pl-select { width: 100%; font: inherit; font-size: .84rem; padding: 6px 8px; border-radius: 10px; border: 1px solid var(--borde-2); background: var(--surface-solid); color: var(--texto); }
.pl-muestras { display: grid; grid-template-columns: repeat(7, 1fr); gap: 7px; }
.pl-muestra {
  position: relative; aspect-ratio: 1; min-width: 0; padding: 0; border-radius: 50%; cursor: pointer;
  border: 2px solid var(--surface-solid); background: var(--c); box-shadow: 0 0 0 1px var(--borde-2);
  transition: transform .12s, box-shadow .12s;
}
.pl-muestra:hover { transform: scale(1.12); }
.pl-muestra:focus-visible { outline: 2px solid var(--marca-2); outline-offset: 2px; }
.pl-muestra.on { box-shadow: 0 0 0 2px var(--texto); }
.pl-muestra.on::after { content: ''; position: absolute; inset: 32%; border-radius: 50%; background: #fff; opacity: .92; }
.pl-libre { background: radial-gradient(circle, var(--c) 0 44%, transparent 46%), conic-gradient(#ef4444, #f59e0b, #eab308, #22c55e, #06b6d4, #3b82f6, #8b5cf6, #ec4899, #ef4444); }
.pl-libre input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; border: 0; padding: 0; }
.pl-opcs { display: flex; flex-wrap: wrap; gap: 6px; }
.pl-opc {
  display: grid; place-items: center; min-width: 54px; height: 34px; padding: 0 8px; cursor: pointer;
  border-radius: 10px; border: 1.5px solid var(--borde-2); background: var(--surface-solid); color: var(--texto);
  transition: border-color var(--t), background var(--t), color var(--t);
}
.pl-opc:hover { border-color: var(--marca-2); }
.pl-opc:focus-visible { outline: 2px solid var(--marca-2); outline-offset: 1px; }
.pl-opc svg { width: 40px; height: 12px; overflow: visible; }
.pl-opc svg[viewBox="0 0 40 14"] { height: 14px; }
.pl-opc svg[viewBox="0 0 20 20"] { width: 18px; height: 18px; }
.pl-opcs:has(svg[viewBox="0 0 20 20"]) .pl-opc { min-width: 36px; }
.pl-opc.on { border-color: var(--marca-2); background: rgba(37, 99, 235, .1); color: var(--marca-2); }
.pl-interruptor { position: relative; display: flex; align-items: center; gap: 10px; cursor: pointer; font-size: .84rem; }
.pl-interruptor input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.pl-interruptor span { flex: none; position: relative; width: 34px; height: 20px; border-radius: 99px; background: var(--borde-2); transition: background var(--t); }
.pl-interruptor span::after { content: ''; position: absolute; top: 2px; left: 2px; width: 16px; height: 16px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0, 0, 0, .3); transition: transform var(--t); }
.pl-interruptor input:checked + span { background: var(--marca-2); }
.pl-interruptor input:checked + span::after { transform: translateX(14px); }
.pl-interruptor input:focus-visible + span { outline: 2px solid var(--marca-2); outline-offset: 2px; }
.pl-interruptor input:disabled + span { opacity: .4; }
.pl-pal-pie { display: flex; flex-wrap: wrap; gap: 8px; padding: 10px 14px; border-top: 1px solid var(--borde); }
.pl-accion { display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px; border-radius: 10px; border: 1px solid var(--borde-2); background: var(--surface-solid); color: var(--texto); font: 600 .8rem var(--font); cursor: pointer; transition: transform .12s, filter var(--t); }
.pl-accion:hover { filter: brightness(1.05); }
.pl-accion:active { transform: scale(.97); }
.pl-accion .pl-ico { width: 15px; height: 15px; }
.pl-primario { background: linear-gradient(135deg, var(--marca-2), #4f46e5); border-color: transparent; color: #fff; box-shadow: 0 3px 10px rgba(37, 99, 235, .3); }
.pl-pal-estado { margin: 0; padding: 0 14px 12px; font-size: .78rem; color: var(--texto-2); }
.pl-pal-estado:empty { display: none; }
.pl-pal-estado.ok { color: var(--ok); }
.pl-pal-estado.aviso { color: var(--texto); }
.pl-pal-estado.error { color: var(--error); }
.pl-enlace { display: inline-flex; align-items: center; gap: 5px; margin-top: 6px; padding: 5px 10px; border-radius: 9px; border: 1px solid var(--borde-2); background: var(--surface-2); color: var(--marca-2); font: 600 .78rem var(--font); cursor: pointer; }
.pl-enlace .pl-ico { width: 14px; height: 14px; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .pl-muestra:not(.pl-libre) { background: var(--c-osc, var(--c)); }
  :root:not([data-theme="light"]) .pl-panel { box-shadow: 0 6px 22px rgba(0, 0, 0, .45); }
}
:root[data-theme="dark"] .pl-muestra:not(.pl-libre) { background: var(--c-osc, var(--c)); }
:root[data-theme="dark"] .pl-panel { box-shadow: 0 6px 22px rgba(0, 0, 0, .45); }

/* En lienzos estrechos la paleta se abre debajo del plano, a todo lo ancho */
.pl-compacto .pl-estilos { position: relative; top: auto; right: auto; width: auto; max-height: none; margin-top: 8px; }

/* ---------- Pantalla completa (API nativa o, si no existe, por CSS) ---------- */
.stem-graf.pl-completa {
  position: fixed; inset: 0; z-index: 100000; max-width: none; width: 100%; height: 100%; margin: 0;
  padding: 12px; box-sizing: border-box; background: var(--bg); display: flex; flex-direction: column; gap: 4px;
}
.pl-completa .pl-plano { flex: 1 1 0; min-height: 0; }
.pl-completa .pl-plano:focus-visible { box-shadow: 0 0 0 3px rgba(37, 99, 235, .14), var(--sombra); }
/* el alto del lienzo lo da la pantalla, nunca el dibujo (si no, el SVG y el lienzo crecerían sin fin) */
.pl-completa .pl-svg { position: absolute; inset: 0; }
.pl-completa .pl-svg svg { width: 100%; height: 100%; }
.pl-completa .pl-desl { flex: none; max-height: 28vh; overflow: auto; margin-top: 4px; }
.pl-completa .pl-estilos { top: 22px; right: 64px; }
.pl-completa.pl-compacto .pl-estilos { position: absolute; top: 18px; left: 18px; right: 18px; width: auto; max-height: 70vh; margin: 0; }
html.pl-sin-scroll, html.pl-sin-scroll body { overflow: hidden; }

@keyframes pl-entra { from { opacity: 0; transform: translateY(-4px); } }
@media (prefers-reduced-motion: reduce) { .pl-info, .pl-estilos { animation: none; } .pl-aviso, .pl-btn { transition: none; } }
@media (max-width: 480px) { .pl-desl-fila { grid-template-columns: auto 1fr 54px 32px; gap: 8px; } }
@media print { .pl-panel, .pl-estilos, .pl-info, .pl-aviso, .pl-barra, .pl-desl input, .pl-desl button { display: none !important; } .pl-plano { box-shadow: none; } }