/* ============================================================
 * theme.css — TEMA de la gu\u00eda de ecuaciones (capa LIBRE).
 * Estilos de las mec\u00e1nicas propias: balanza, solver, armar.
 * Clases con prefijo propio (eq-widget/bz-/sv-/ar-). El andamiaje
 * vive en assets/guia-components.css; variables --guia-* de ah\u00ed.
 * ============================================================ */

/* ===== Mecánicas interactivas (balanza, solver, armar) ===== */
.eq-widget { margin-top: 2px; padding: 16px; border: 2px solid var(--guia-ink); border-radius: 14px; background: var(--guia-cream); display: grid; gap: 12px; }
.wg-lead { margin: 0; font-size: 17px; font-weight: 600; color: var(--guia-deep); }

/* --- BALANZA con manzanas --- */
.bz-stage { display: flex; justify-content: center; }
.bz-svg { width: 100%; max-width: 360px; height: auto; }
.bz-base { stroke: var(--guia-ink); stroke-width: 5; stroke-linecap: round; }
.bz-fulcrum { fill: var(--guia-ink); }
.bz-beam { transform-box: view-box; transform-origin: 160px 74px; transition: transform 420ms cubic-bezier(.34, 1.15, .5, 1); }
.bz-bar { fill: var(--guia-ink); }
.bz-strap { stroke: var(--guia-ink); stroke-width: 2.5; }
.bz-pan { fill: #fff; stroke: var(--guia-ink); stroke-width: 2.5; stroke-linejoin: round; transition: fill 200ms ease, stroke 200ms ease; }
.balanza.is-balanced .bz-pan { fill: #e6f5ec; stroke: var(--guia-green-deep); }
.bz-apple { cursor: pointer; }
.bz-apple-body { fill: #e23b2e; stroke: var(--guia-ink); stroke-width: 1.5; transition: fill 120ms ease; }
.bz-apple:hover .bz-apple-body { fill: #b4271d; }
.bz-apple:active .bz-apple-body { fill: #8f1e16; }
.bz-apple-leaf { fill: #4a9e3f; }
.bz-apple-stem { stroke: #7a5230; stroke-width: 2; fill: none; stroke-linecap: round; }
.bz-controls { display: flex; flex-wrap: wrap; gap: 22px; justify-content: center; }
.bz-side { display: grid; gap: 7px; justify-items: center; }
.bz-cap { font-size: 15px; font-weight: 800; color: var(--guia-deep); }
.bz-row { display: flex; align-items: center; gap: 8px; }
.bz-ico { font-size: 17px; }
.bz-btn { min-height: 44px; padding: 9px 15px; border: 2px solid var(--guia-ink); border-radius: 10px; background: #fff; font: inherit; font-size: 15px; font-weight: 800; color: var(--guia-ink); cursor: pointer; display: inline-flex; align-items: center; gap: 6px; line-height: 1; transition: background 120ms ease, color 120ms ease, transform .08s; }
.bz-btn.add { background: var(--guia-cream); }
.bz-btn:hover:not(:disabled) { background: var(--guia-orange); color: #fff; transform: translateY(-1px); }
.bz-btn:disabled { opacity: .4; cursor: default; }
.bz-status { margin: 0; text-align: center; font-size: 15px; font-weight: 600; min-height: 1.2em; color: var(--guia-muted); }
.balanza.is-balanced .bz-status { color: var(--guia-green-deep); }
@media (prefers-reduced-motion: reduce) { .bz-beam { transition: none; } }

/* --- SOLVER ("resuelve tú el paso") --- */
.solver { background: #fff; }
.sv-eq { justify-self: start; padding: 12px 22px; border: 1.5px solid var(--guia-line); border-radius: 12px; background: #fcfbf9; font-size: clamp(20px, 2.4vw, 26px); box-shadow: none; }
.sv-flash { animation: sv-pop 650ms ease; }
@keyframes sv-pop { 0% { background: #e6f5ec; } 100% { background: #fcfbf9; } }
.sv-panel { display: grid; gap: 10px; }
.sv-prompt { margin: 0; font-weight: 700; color: var(--guia-ink); }
.sv-opts { display: flex; flex-wrap: wrap; gap: 8px; }
.sv-fb { margin: 0; min-height: 1.1em; font-size: 15px; line-height: 1.5; }
.sv-fb.correct { color: var(--guia-green-deep); font-weight: 600; }
.sv-fb.incorrect { color: #a01243; }
.sv-done { margin: 0; font-weight: 700; color: var(--guia-green-deep); font-size: 17px; }
.sv-trace { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.sv-trace > li { font-size: 15px; color: var(--guia-muted); padding-left: 18px; position: relative; }
.sv-trace > li::before { content: "↳"; position: absolute; left: 0; color: var(--guia-deep); font-weight: 800; }

/* --- ARMAR (construir la ecuación con fichas) --- */
.armar { background: #fff; }
.ar-sentence { margin: 0; font-size: 17px; font-style: italic; color: var(--guia-ink); }
.ar-build { min-height: 56px; display: flex; align-items: center; flex-wrap: wrap; gap: 6px; padding: 10px 16px; border: 2px dashed var(--guia-line); border-radius: 12px; background: #fcfbf9; font-size: clamp(19px, 2.2vw, 24px); }
.ar-placeholder { font-size: 15px; font-style: normal; color: var(--guia-muted); }
.ar-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.ar-chip { padding: 10px 16px; border: 2px solid var(--guia-ink); border-radius: 10px; background: #fff; cursor: pointer; font-size: 17px; line-height: 1; box-shadow: 2px 2px 0 var(--guia-ink); transition: transform 100ms ease, box-shadow 100ms ease; }
.ar-chip:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--guia-ink); }
.ar-chip:active { transform: translate(1px, 1px); box-shadow: 1px 1px 0 var(--guia-ink); }
.ar-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.ar-fb { margin: 0; min-height: 1.1em; font-size: 15px; line-height: 1.5; }
.ar-fb.correct { color: var(--guia-green-deep); font-weight: 600; }
.ar-fb.incorrect { color: #a01243; }

/* ===== Impresi\u00f3n: oculta los widgets interactivos del tema ===== */
@media print {
  .eq-widget { display: none !important; }
}