/* ============================================================
 * theme.css — TEMA de la guía de REFRACCIÓN DE LA LUZ (capa LIBRE).
 * Solo estilos del tema (prefijo rf-). Colores con var(--guia-*)
 * definidas en guia-components.css: --guia-line, --guia-muted,
 * --guia-cream, --guia-deep, --guia-ink, --guia-navy, --guia-orange,
 * --guia-green, --guia-green-deep, --guia-bg, --guia-shadow.
 * ============================================================ */

/* ===== Visual estático: diagramas SVG del tema ===== */
.rf-visual {
  margin: 14px 0;
  text-align: center;
}
.rf-svg {
  width: 100%;
  max-width: 380px;
  height: auto;
  display: inline-block;
}

/* ===== Leyenda de color del tema ===== */
.rf-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 10px 0 6px;
  padding: 12px 14px;
  border: 1.5px solid var(--guia-line);
  border-radius: 12px;
  background: #fff;
  font-size: 15px;
  font-weight: 700;
  color: var(--guia-ink);
}
.rf-legend i {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 4px;
  margin-right: 6px;
  vertical-align: -2px;
}

/* ===== Widget: tabla de materiales ===== */
.rf-mat-table {
  margin: 16px 0;
  padding: 16px 14px;
  border: 2px solid var(--guia-line);
  border-radius: 16px;
  background: #fff;
}
.rf-mat-top {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.rf-mat-inst {
  font-size: 15px;
  color: var(--guia-muted);
  font-weight: 600;
  line-height: 1.45;
}
.rf-mat-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0;
}
.rf-chip {
  min-height: 44px;
  padding: 9px 14px;
  border: 2px solid var(--guia-line);
  border-radius: 999px;
  background: var(--guia-cream);
  color: var(--guia-ink);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}
.rf-chip:hover { border-color: var(--guia-navy); }
.rf-chip.rf-on { border-color: var(--guia-navy); background: var(--guia-navy); color: #fff; }
.rf-mat-result {
  display: none;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1.5px dashed var(--guia-line);
}
.rf-mat-result.rf-show { display: block; }
.rf-mat-name {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--guia-ink);
}
.rf-mat-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.rf-mat-cell {
  flex: 1 1 9rem;
  background: var(--guia-cream);
  border-radius: 12px;
  padding: 10px 12px;
  border: 1.5px solid var(--guia-line);
  text-align: center;
}
.rf-mat-cell .rf-lbl {
  display: block;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--guia-muted);
  margin-bottom: 4px;
}
.rf-mat-cell strong {
  display: block;
  font-size: 22px;
  line-height: 1.25;
  color: var(--guia-navy);
}
.rf-mat-cell .rf-v strong { color: #C75D08; }
.rf-mat-note {
  margin: 10px 0 0;
  font-size: 15px;
  color: var(--guia-muted);
  font-weight: 600;
  line-height: 1.45;
}

/* ===== Flag (etiqueta de acción del widget) ===== */
.rf-flag {
  flex: none;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--guia-deep);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

/* ===== Widget estrella: Snell Lab ===== */
.rf-snell-lab {
  margin: 16px 0;
  border: 2px solid var(--guia-line);
  border-radius: 16px;
  background: #fff;
  overflow: hidden;
  touch-action: none;
}
.rf-snell-top {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  padding: 14px 14px 12px;
  background: var(--guia-cream);
  border-bottom: 1.5px solid var(--guia-line);
}
.rf-snell-inst {
  font-size: 15px;
  color: var(--guia-muted);
  font-weight: 600;
  line-height: 1.45;
}
.rf-snell-canvas-wrap {
  cursor: crosshair;
  user-select: none;
  touch-action: none;
}
.rf-snell-canvas-wrap canvas {
  display: block;
  width: 100%;
  touch-action: none;
}
.rf-snell-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 14px;
  border-top: 1.5px solid var(--guia-line);
  align-items: center;
}
.rf-snell-lbl {
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--guia-muted);
}
.rf-snell-medium-btn {
  min-height: 40px;
  padding: 6px 14px;
  border: 2px solid var(--guia-line);
  border-radius: 999px;
  background: var(--guia-cream);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  color: var(--guia-ink);
}
.rf-snell-medium-btn:hover { border-color: var(--guia-orange); }
.rf-snell-medium-btn.rf-on {
  border-color: var(--guia-navy);
  background: var(--guia-navy);
  color: #fff;
}
.rf-snell-readout {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  padding: 10px 14px;
  border-top: 1.5px solid var(--guia-line);
  background: var(--guia-cream);
}
.rf-snell-cell {
  background: #fff;
  border-radius: 12px;
  padding: 8px 10px;
  border: 1.5px solid var(--guia-line);
  text-align: center;
}
.rf-snell-cell .rf-lbl {
  display: block;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--guia-muted);
  margin-bottom: 4px;
}
.rf-snell-cell strong {
  display: block;
  font-size: 18px;
  line-height: 1.25;
  font-weight: 800;
}
.rf-snell-msg {
  padding: 6px 14px 10px;
  font-size: 15px;
  color: var(--guia-muted);
  min-height: 1.8em;
  font-weight: 600;
}

/* ===== Responsive 360px ===== */
@media (max-width: 540px) {
  .rf-snell-readout { grid-template-columns: 1fr; }
  .rf-snell-cell strong { font-size: 17px; }
  .rf-mat-row { flex-direction: column; }
}

/* ===== Impresión ===== */
@media print {
  .rf-snell-lab, .rf-mat-table { display: none !important; }
}