/* =========================================================
   RutaDev · componentes.css
   Botones, árbol, vistas, lecciones, código, modales, formularios
   ========================================================= */

/* ---------- botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45em;
  min-height: 38px;
  padding: 0.45em 0.95em;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  color: var(--fg);
  font-weight: 700;
  font-size: 0.9rem;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.btn:hover { border-color: var(--lib); color: var(--lib-text); }
.btn-primario { background: var(--lib); border-color: var(--lib); color: var(--ink); }
.btn-primario:hover { color: var(--ink); filter: brightness(1.06); }
.btn-peligro { color: var(--danger); }
.btn-peligro:hover { border-color: var(--danger); color: var(--danger); background: var(--danger-soft); }
.btn-peligro.lleno { background: var(--danger); border-color: var(--danger); color: var(--ink); }
.btn-suave { background: var(--lib-soft); border-color: transparent; color: var(--lib-text); }
.btn-icono {
  display: inline-grid;
  place-items: center;
  width: 38px; height: 38px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  color: var(--muted);
  flex: none;
}
.btn-icono:hover { color: var(--lib-text); border-color: var(--lib); }
.btn-icono.peligro:hover { color: var(--danger); border-color: var(--danger); }
.btn-icono:disabled { opacity: 0.35; pointer-events: none; }
.btn-mini {
  display: inline-flex; align-items: center; gap: 0.35em;
  border: 1px solid transparent; background: none;
  color: inherit; font-size: 0.78rem; font-weight: 700;
  padding: 4px 8px; border-radius: 7px;
}
.btn-mini:hover { border-color: currentColor; }
.acciones { display: flex; flex-wrap: wrap; gap: 8px; }

/* ---------- panel lateral ---------- */
.libs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 12px 12px 0;
  flex: none;
}
.lib-tab {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 10px 6px 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  font-size: 0.82rem; font-weight: 700;
  white-space: nowrap;
  color: var(--muted);
}
.lib-tab-n {
  display: inline-grid; place-items: center;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--lib-soft); color: var(--lib-text);
  font: 800 0.75rem/1 var(--font-display);
}
.lib-tab.activa { background: var(--lib-soft); border-color: var(--lib); color: var(--lib-text); }
.lib-tab.activa .lib-tab-n { background: var(--lib); color: var(--ink); }
.lib-tab.nueva { padding: 6px 10px; }
.side-cab {
  padding: 14px 16px 12px;
  border-bottom: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 8px;
  flex: none;
}
.side-cab h2 { font-size: 1.1rem; }
.side-cab-fila { display: flex; align-items: center; justify-content: space-between; gap: 8px; font-size: 0.8rem; color: var(--muted); }
.arbol-wrap { overflow: auto; padding: 8px 8px 16px; flex: 1; min-height: 0; }
.side-pie {
  border-top: 1px solid var(--line);
  padding: 10px 12px;
  display: flex; gap: 8px; flex: none;
}
.side-pie .btn { flex: 1; }

.arbol, .arbol ul { list-style: none; margin: 0; padding: 0; }
.arbol ul { padding-left: 14px; margin-left: 11px; border-left: 1px dashed var(--line); }
.nodo { display: flex; align-items: flex-start; gap: 2px; border-radius: 8px; }
.nodo-tg {
  width: 22px; height: 30px; flex: none;
  display: grid; place-items: center;
  border: 0; background: none; color: var(--muted);
  border-radius: 6px; padding: 0;
}
.nodo-tg .ic { width: 15px; height: 15px; transition: transform 0.15s; }
.nodo-tg[aria-expanded="true"] .ic { transform: rotate(90deg); }
.nodo-tg.vacio { pointer-events: none; }
.nodo-btn {
  flex: 1; min-width: 0;
  display: flex; align-items: baseline; gap: 7px;
  padding: 5px 8px;
  border: 0; border-radius: 7px;
  background: none; text-align: left;
  font-size: 0.88rem; line-height: 1.35;
  color: var(--fg);
}
.nodo-btn:hover { background: var(--panel-2); }
.nodo.sel .nodo-btn { background: var(--lib-soft); color: var(--lib-text); font-weight: 700; }
.nodo-num { font: 600 0.72rem var(--font-mono); color: var(--muted); flex: none; font-variant-numeric: tabular-nums; }
.nodo.sel .nodo-num { color: var(--lib-text); }
.nodo-txt { min-width: 0; overflow-wrap: anywhere; }
.n-modulo > .nodo-btn { font-weight: 700; }
.n-tema .nodo-txt { color: var(--muted); }
.nodo.sel.n-tema .nodo-txt { color: var(--lib-text); }
.nodo-ok { color: var(--ok); margin-left: auto; align-self: center; }
.nodo-ok .ic { width: 15px; height: 15px; stroke-width: 2.4; }

/* ---------- barras de progreso ---------- */
.barra {
  height: 7px;
  border-radius: 99px;
  background: var(--panel-2);
  overflow: hidden;
  flex: 1;
  min-width: 60px;
}
.barra > span { display: block; height: 100%; background: var(--lib); border-radius: inherit; transition: width 0.3s; }
.progreso { display: flex; align-items: center; gap: 10px; font-size: 0.8rem; color: var(--muted); font-variant-numeric: tabular-nums; }

/* ---------- textos de vista ---------- */
.eyebrow {
  font: 700 0.74rem/1 var(--font-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--lib-text);
  display: inline-flex; align-items: center; gap: 6px;
}
.lead { font-size: 1.08rem; color: var(--muted); max-width: 62ch; }
.migas {
  display: flex; flex-wrap: wrap; align-items: center; gap: 4px 6px;
  font-size: 0.82rem; color: var(--muted);
}
.migas button {
  border: 0; background: none; padding: 2px 4px; border-radius: 5px;
  color: var(--muted); text-decoration: underline; text-decoration-color: var(--line); text-underline-offset: 3px;
}
.migas button:hover { color: var(--lib-text); }
.migas .ic { width: 13px; height: 13px; }

/* ---------- inicio ---------- */
.hero { display: flex; flex-direction: column; gap: 12px; padding-bottom: 6px; }
.hero h1 { font-size: clamp(2rem, 4.4vw, 3rem); font-weight: 800; letter-spacing: -0.025em; }
.hero h1 em { font-style: normal; color: var(--accent); }

.ruta { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0; }
.ruta-paso {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 0 18px;
}
.ruta-eje { display: flex; flex-direction: column; align-items: center; }
.ruta-num {
  width: 52px; height: 52px; border-radius: 16px;
  display: grid; place-items: center;
  background: var(--lib); color: var(--ink);
  font: 800 1.5rem/1 var(--font-display);
  flex: none;
}
.ruta-linea { flex: 1; width: 0; border-left: 2px dashed var(--lib); opacity: 0.5; margin-block: 6px; min-height: 18px; }
.ruta-paso:last-child .ruta-linea { visibility: hidden; }
.ruta-card {
  display: flex; flex-direction: column; gap: 12px;
  padding: 4px 0 30px;
  min-width: 0;
}
.ruta-card h2 { font-size: 1.45rem; }
.ruta-card .etapa { font-size: 0.78rem; color: var(--muted); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.ruta-card p { color: var(--muted); max-width: 64ch; }
.modchips { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0; padding: 0; }
.modchips button {
  border: 1px solid var(--line); background: var(--panel);
  border-radius: 999px; padding: 4px 10px 4px 4px;
  font-size: 0.8rem; color: var(--fg);
  display: inline-flex; align-items: center; gap: 6px;
}
.modchips button:hover { border-color: var(--lib); color: var(--lib-text); }
.modchips .n {
  display: inline-grid; place-items: center; min-width: 20px; height: 20px; padding: 0 5px; border-radius: 99px;
  background: var(--lib-soft); color: var(--lib-text); font: 700 0.7rem var(--font-mono);
}
.modchips .hecho .n { background: var(--ok); color: var(--ink); }
.continuar {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 12px 14px; border-radius: 12px; background: var(--lib-soft);
}
.continuar small { display: block; color: var(--lib-text); font-weight: 700; font-size: 0.74rem; letter-spacing: 0.06em; text-transform: uppercase; }
.continuar strong { display: block; font-size: 0.98rem; }
.continuar > div { flex: 1; min-width: 180px; }

.guia {
  border-top: 1px solid var(--line);
  padding-top: 22px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px 28px;
}
.guia h3 { font-size: 1rem; margin-bottom: 6px; display: flex; align-items: center; gap: 8px; }
.guia h3 .ic { color: var(--accent); }
.guia p { color: var(--muted); font-size: 0.92rem; }
.niveles { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: 0.82rem; }
.niveles span { background: var(--panel-2); border: 1px solid var(--line); border-radius: 7px; padding: 2px 8px; }
.niveles .ic { width: 13px; height: 13px; color: var(--muted); }

/* ---------- cabecera de nodo ---------- */
.cabecera { display: flex; flex-direction: column; gap: 12px; }
.cabecera h1 { font-size: clamp(1.7rem, 3.4vw, 2.35rem); font-weight: 800; }
.cabecera .lead { font-size: 1rem; }
.nivel-tag {
  align-self: flex-start;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px 4px 8px; border-radius: 999px;
  background: var(--lib-soft); color: var(--lib-text);
  font-size: 0.78rem; font-weight: 700;
}
.nivel-tag .ic { width: 15px; height: 15px; }
.nivel-tag .num { font-family: var(--font-mono); }

.seccion-t {
  display: flex; align-items: baseline; justify-content: space-between; gap: 12px;
  font-size: 1.05rem;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.seccion-t small { font: 400 0.82rem var(--font-body); color: var(--muted); }

/* ---------- lista de hijos ---------- */
.lista { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 12px 12px 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  transition: border-color 0.15s;
}
.item:hover { border-color: var(--lib); }
.item-num {
  min-width: 42px; height: 42px; padding: 0 8px; border-radius: 11px;
  display: grid; place-items: center;
  background: var(--lib-soft); color: var(--lib-text);
  font: 700 0.85rem var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.item.hecho .item-num { background: var(--ok-soft); color: var(--ok); }
.item-main {
  display: flex; flex-direction: column; gap: 4px; align-items: flex-start;
  border: 0; background: none; padding: 0; text-align: left; min-width: 0;
}
.item-main strong { font-family: var(--font-display); font-size: 1.05rem; line-height: 1.25; }
.item-main:hover strong { color: var(--lib-text); }
.item-desc { color: var(--muted); font-size: 0.88rem; }
.item-meta { display: flex; align-items: center; gap: 10px; width: 100%; max-width: 360px; font-size: 0.78rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.item-acc { display: flex; gap: 4px; }
.item-acc .btn-icono { width: 32px; height: 32px; border-color: transparent; }
.item-acc .btn-icono:hover { border-color: var(--line); }

.vacio-estado {
  border: 1.5px dashed var(--line);
  border-radius: 14px;
  padding: 28px 20px;
  text-align: center;
  color: var(--muted);
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}

/* ---------- lección (contenido de un tema) ---------- */
.leccion {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  display: flex; flex-direction: column;
  overflow: hidden;
}
.leccion-cab {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 14px 16px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--line);
}
.leccion-cab h2 { font-size: 1.15rem; flex: 1; min-width: 160px; }
.leccion-cuerpo { padding: 20px 20px 22px; display: flex; flex-direction: column; gap: 22px; }
.leccion.hecho .leccion-cab { background: var(--ok-soft); }
.marcar {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1.5px solid var(--line); border-radius: 999px;
  background: var(--panel); padding: 5px 12px 5px 6px;
  font-size: 0.82rem; font-weight: 700; color: var(--muted);
}
.marcar .caja { width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--line); display: grid; place-items: center; }
.marcar .caja .ic { width: 13px; height: 13px; stroke-width: 3; opacity: 0; }
.marcar[aria-pressed="true"] { border-color: var(--ok); color: var(--ok); }
.marcar[aria-pressed="true"] .caja { background: var(--ok); border-color: var(--ok); color: var(--ink); }
.marcar[aria-pressed="true"] .caja .ic { opacity: 1; }

.bloque-t {
  display: flex; align-items: center; gap: 8px;
  font: 700 0.76rem/1 var(--font-body); letter-spacing: 0.09em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 10px;
}
.bloque-t .ic { color: var(--lib-text); width: 16px; height: 16px; }
.comentarios { display: flex; flex-direction: column; gap: 10px; max-width: 68ch; }
.comentarios p { font-size: 1rem; line-height: 1.65; }
.ejemplos { display: flex; flex-direction: column; gap: 8px; }
.ejemplo {
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--lib-soft);
  font-size: 0.95rem;
  max-width: 72ch;
}

.recursos { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.recurso-grupo { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.recurso {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 9px 11px; border-radius: 10px;
  border: 1px solid var(--line);
  color: var(--fg); text-decoration: none;
  font-size: 0.88rem; line-height: 1.35;
  min-width: 0;
}
.recurso:hover { border-color: var(--lib); }
.recurso .ic { color: var(--lib-text); margin-top: 1px; }
.recurso span { min-width: 0; overflow-wrap: anywhere; }
.recurso small { display: block; color: var(--muted); font-size: 0.75rem; margin-top: 2px; }
.recurso-vacio { font-size: 0.85rem; color: var(--muted); padding: 4px 2px; }

/* ---------- código ---------- */
.codigo {
  margin: 0;
  border-radius: 12px;
  background: var(--code-bg);
  color: var(--code-fg);
  overflow: hidden;
  min-width: 0;
}
.codigo + .codigo { margin-top: 12px; }
.codigo figcaption {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 8px 7px 14px;
  border-bottom: 1px solid var(--code-line);
  font-size: 0.78rem; color: var(--sx-com);
}
.codigo-lang { font-family: var(--font-mono); font-weight: 600; color: var(--sx-type); text-transform: lowercase; }
.codigo-tit { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.codigo figcaption .btn-mini { margin-left: auto; color: var(--code-fg); }
.codigo pre { margin: 0; overflow-x: auto; padding: 14px 16px 16px; }
.codigo code { font-size: 0.84rem; line-height: 1.6; tab-size: 2; white-space: pre; background: none; color: inherit; }

.hljs-keyword, .hljs-selector-tag, .hljs-literal, .hljs-section, .hljs-built_in { color: var(--sx-key); }
.hljs-string, .hljs-regexp, .hljs-addition, .hljs-symbol { color: var(--sx-str); }
.hljs-number, .hljs-meta { color: var(--sx-num); }
.hljs-comment, .hljs-quote, .hljs-deletion { color: var(--sx-com); font-style: italic; }
.hljs-title, .hljs-title.function_, .hljs-name { color: var(--sx-fn); }
.hljs-type, .hljs-title.class_, .hljs-selector-class { color: var(--sx-type); }
.hljs-attr, .hljs-attribute, .hljs-variable, .hljs-template-variable, .hljs-property, .hljs-params { color: var(--sx-attr); }
.hljs-strong { font-weight: 700; }
.hljs-emphasis { font-style: italic; }

/* ---------- navegación anterior / siguiente ---------- */
.pasos {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
  border-top: 1px solid var(--line); padding-top: 18px;
}
.paso {
  display: flex; flex-direction: column; gap: 4px;
  padding: 12px 14px; border-radius: 12px;
  border: 1px solid var(--line); background: var(--panel);
  text-align: left; min-width: 0;
}
.paso:hover { border-color: var(--lib); }
.paso small { color: var(--muted); font-size: 0.76rem; display: inline-flex; align-items: center; gap: 6px; }
.paso strong { font-family: var(--font-display); font-size: 0.98rem; overflow-wrap: anywhere; }
.paso.sig { text-align: right; align-items: flex-end; grid-column: 2; }

/* ---------- búsqueda ---------- */
.resultado {
  display: flex; flex-direction: column; gap: 4px; align-items: flex-start;
  width: 100%; text-align: left;
  padding: 12px 14px; border-radius: 12px;
  border: 1px solid var(--line); background: var(--panel);
}
.resultado:hover { border-color: var(--lib); }
.resultado .ruta-txt { font-size: 0.76rem; color: var(--muted); }
.resultado strong { font-family: var(--font-display); }
.resultado p { font-size: 0.86rem; color: var(--muted); }
.resultado mark { background: var(--lib-soft); color: var(--lib-text); border-radius: 3px; padding: 0 2px; }

/* ---------- modal ---------- */
.modal {
  position: fixed; inset: 0; z-index: 60;
  display: grid; place-items: center;
  padding: max(16px, env(safe-area-inset-top, 0px)) max(16px, env(safe-area-inset-right, 0px)) max(16px, env(safe-area-inset-bottom, 0px)) max(16px, env(safe-area-inset-left, 0px));
}
.modal-fondo { position: absolute; inset: 0; background: var(--scrim); }
.modal-caja {
  position: relative;
  width: min(560px, 100%);
  max-height: 100%;
  display: flex; flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  overflow: hidden;
  animation: entrar 0.18s ease-out;
}
.modal-caja.ancho { width: min(820px, 100%); }
@keyframes entrar { from { transform: translateY(8px); opacity: 0.6; } to { transform: none; opacity: 1; } }
.modal-cab { display: flex; align-items: center; gap: 12px; padding: 16px 18px; border-bottom: 1px solid var(--line); }
.modal-cab h2 { flex: 1; font-size: 1.2rem; }
.modal-cuerpo { padding: 18px; overflow-y: auto; display: flex; flex-direction: column; gap: 16px; }
.modal-pie { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 8px; padding: 14px 18px; border-top: 1px solid var(--line); background: var(--panel-2); }
.modal-pie:empty { display: none; }
.modal-pie .izq { margin-right: auto; }

/* ---------- formularios ---------- */
.campo { display: flex; flex-direction: column; gap: 6px; }
.campo > label, .campo > .etq { font-weight: 700; font-size: 0.88rem; }
.campo .ayuda { font-size: 0.78rem; color: var(--muted); }
.campo input[type="text"], .campo input[type="url"], .campo input[type="search"],
.campo textarea, .campo select, .ed-bloque select, .ed-bloque input, .ed-bloque textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  color: var(--fg);
  padding: 9px 12px;
  line-height: 1.45;
}
.campo textarea { resize: vertical; min-height: 84px; }
.campo input:focus, .campo textarea:focus, .campo select:focus,
.ed-bloque select:focus, .ed-bloque input:focus, .ed-bloque textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft);
}
.mono, textarea.mono { font-family: var(--font-mono); font-size: 0.82rem; }
.campo.error input, .campo.error textarea { border-color: var(--danger); }
.campo .msg-error { color: var(--danger); font-size: 0.8rem; font-weight: 700; }
.fila-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
fieldset.campo { border: 0; padding: 0; margin: 0; }
fieldset.campo legend { font-weight: 700; font-size: 0.88rem; padding: 0; margin-bottom: 8px; }

.muestras { display: flex; flex-wrap: wrap; gap: 8px; }
.muestra { position: relative; }
.muestra input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.muestra span {
  display: block; width: 34px; height: 34px; border-radius: 50%;
  background: oklch(var(--lib-L) var(--lib-C) var(--m));
  border: 3px solid var(--panel);
  box-shadow: 0 0 0 1.5px var(--line);
}
.muestra input:checked + span { box-shadow: 0 0 0 2.5px var(--fg); }
.muestra input:focus-visible + span { outline: 2.5px solid var(--accent); outline-offset: 3px; }

.tema-op {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  border: 1.5px solid var(--line); border-radius: 12px; background: var(--panel);
  padding: 10px 8px; font-size: 0.78rem; font-weight: 700; min-width: 82px;
}
.tema-op i {
  display: block; width: 100%; height: 26px; border-radius: 7px;
  background: linear-gradient(90deg, oklch(var(--lib-L) var(--lib-C) var(--m)) 0 55%, oklch(var(--libs-L) var(--libs-C) var(--m)) 55% 100%);
}
.tema-op[aria-pressed="true"] { border-color: var(--fg); }
.temas-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(82px, 1fr)); gap: 8px; }
.segmentado { display: inline-flex; border: 1px solid var(--line); border-radius: 11px; padding: 3px; gap: 3px; background: var(--bg); }
.segmentado button {
  display: inline-flex; align-items: center; gap: 6px;
  border: 0; background: none; border-radius: 8px; padding: 7px 12px; font-size: 0.86rem; font-weight: 700; color: var(--muted);
}
.segmentado button[aria-pressed="true"] { background: var(--panel); color: var(--fg); box-shadow: 0 1px 3px oklch(0% 0 0 / 0.12); }

.ed-bloques { display: flex; flex-direction: column; gap: 12px; }
.ed-bloque { border: 1px solid var(--line); border-radius: 12px; padding: 10px; display: flex; flex-direction: column; gap: 8px; background: var(--panel-2); }
.ed-bloque-cab { display: flex; gap: 8px; }
.ed-bloque-cab select { width: auto; flex: none; }
.ed-bloque-cab input { flex: 1; min-width: 0; }
.ed-bloque textarea { min-height: 150px; resize: vertical; white-space: pre; overflow-x: auto; }
.opciones-radio { display: flex; flex-direction: column; gap: 8px; }
.opciones-radio label { display: flex; gap: 10px; align-items: flex-start; font-size: 0.92rem; }
.opciones-radio input { margin-top: 4px; accent-color: var(--accent); }
.nota { font-size: 0.85rem; color: var(--muted); background: var(--panel-2); border-radius: 10px; padding: 10px 12px; }

/* ---------- avisos ---------- */
.toasts {
  position: fixed; z-index: 80;
  left: 50%; transform: translateX(-50%);
  bottom: calc(18px + env(safe-area-inset-bottom, 0px));
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  pointer-events: none;
  width: min(92vw, 420px);
}
.toast {
  background: var(--fg); color: var(--bg);
  padding: 10px 16px; border-radius: 12px;
  font-size: 0.9rem; font-weight: 700;
  box-shadow: var(--shadow);
  display: flex; align-items: center; gap: 8px;
  animation: entrar 0.2s ease-out;
}

@media (max-width: 620px) {
  .item { grid-template-columns: auto minmax(0, 1fr); }
  .item-acc { grid-column: 1 / -1; justify-content: flex-end; border-top: 1px dashed var(--line); padding-top: 8px; }
  .ruta-paso { grid-template-columns: 44px minmax(0, 1fr); gap: 0 12px; }
  .ruta-num { width: 44px; height: 44px; border-radius: 13px; font-size: 1.25rem; }
  .leccion-cuerpo { padding: 16px 14px 18px; }
  .pasos { grid-template-columns: 1fr; }
  .paso.sig { grid-column: auto; }
}