:root {
  --escuelaHelp-ruby: #9B111E;
  --escuelaHelp-blue: #0000FF;
  --escuelaHelp-gold: #BDA838;
  --escuelaHelp-gold-dim: rgba(189, 168, 56, 0.62);
  --escuelaHelp-line: rgba(125, 145, 255, 0.14);
  --escuelaHelp-field-bg: #0A0D20;
  --escuelaHelp-font-main: "Merriweather", "Helvetica Neue", Arial, system-ui, sans-serif;
  --escuelaHelp-font-mono: ui-monospace, "Merriweather", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

/* ---------- optional deep-space page background (demo page) ---------- */
.escuelaHelp-body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 26px 16px;
  font-family: var(--escuelaHelp-font-main);
  background:
    radial-gradient(1100px 520px at 12% -8%, rgba(155, 17, 30, 0.20), transparent 60%),
    radial-gradient(950px 640px at 108% 108%, rgba(0, 0, 255, 0.18), transparent 58%),
    linear-gradient(165deg, #05060F 0%, #03040A 55%, #050614 100%);
}

/* ---------- panel shell: ruby-to-blue gradient border ---------- */
.escuelaHelp-panel,
.escuelaHelp-panel *,
.escuelaHelp-panel *::before,
.escuelaHelp-panel *::after {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

.escuelaHelp-panel {
  width: min(1180px, 100%);
  border: 1px solid transparent;
  border-radius: 20px;
  background:
    linear-gradient(180deg, #0A0C1F 0%, #060814 100%) padding-box,
    linear-gradient(135deg, var(--escuelaHelp-ruby) 0%, #5A0F86 52%, var(--escuelaHelp-blue) 100%) border-box;
  box-shadow:
    0 24px 70px rgba(0, 0, 0, 0.6),
    0 0 46px rgba(155, 17, 30, 0.22),
    0 0 90px rgba(0, 0, 255, 0.14);
  overflow: hidden;
  color: var(--escuelaHelp-gold);
}

/* ---------- header ---------- */
.escuelaHelp-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 22px 14px;
  flex-wrap: wrap;
}

.escuelaHelp-orb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  flex-shrink: 0;
  background: radial-gradient(circle at 35% 30%, #FFE39A, var(--escuelaHelp-gold) 46%, #6E520C 100%);
  animation: escuelaHelpPulse 2.8s ease-in-out infinite alternate;
}

@keyframes escuelaHelpPulse {
  from { box-shadow: 0 0 8px rgba(189, 168, 56, 0.7), 0 0 18px rgba(155, 17, 30, 0.45); }
  to   { box-shadow: 0 0 16px rgba(189, 168, 56, 0.95), 0 0 34px rgba(0, 0, 255, 0.55); }
}

.escuelaHelp-heading { min-width: 0; }

.escuelaHelp-title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--escuelaHelp-gold);
  text-shadow: 0 0 16px rgba(189, 168, 56, 0.35);
}

.escuelaHelp-subtitle {
  margin: 3px 0 0;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--escuelaHelp-gold-dim);
}

.escuelaHelp-formulaChip {
  margin-left: auto;
  font-family: var(--escuelaHelp-font-mono);
  font-size: 0.82rem;
  color: var(--escuelaHelp-gold);
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(189, 168, 56, 0.4);
  background: rgba(6, 8, 20, 0.75);
  box-shadow: inset 0 0 18px rgba(0, 0, 255, 0.12), 0 0 14px rgba(155, 17, 30, 0.25);
  white-space: nowrap;
}

.escuelaHelp-formulaChip sup { font-size: 0.68em; }

.escuelaHelp-headerDivider {
  height: 2px;
  opacity: 0.85;
  background: linear-gradient(90deg, transparent, var(--escuelaHelp-ruby) 18%, var(--escuelaHelp-gold) 50%, var(--escuelaHelp-blue) 82%, transparent);
  background-size: 200% 100%;
  animation: escuelaHelpShimmer 7s linear infinite;
}

@keyframes escuelaHelpShimmer {
  from { background-position: 0% 50%; }
  to   { background-position: 200% 50%; }
}

/* ---------- layout ---------- */
.escuelaHelp-layout {
  display: grid;
  grid-template-columns: 322px 1fr;
}

/* ---------- sidebar ---------- */
.escuelaHelp-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 18px 18px 22px;
  border-right: 1px solid var(--escuelaHelp-line);
  background: linear-gradient(180deg, rgba(10, 12, 30, 0.6), rgba(5, 6, 16, 0.35));
}

.escuelaHelp-sidebar::-webkit-scrollbar { width: 8px; }
.escuelaHelp-sidebar::-webkit-scrollbar-track { background: rgba(10, 12, 30, 0.6); }
.escuelaHelp-sidebar::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--escuelaHelp-ruby), var(--escuelaHelp-blue));
  border-radius: 8px;
}

.escuelaHelp-controlGroup {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--escuelaHelp-line);
  border-radius: 14px;
  background: rgba(8, 10, 24, 0.55);
}

.escuelaHelp-groupLabel {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--escuelaHelp-gold);
}

.escuelaHelp-groupRow {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.escuelaHelp-sliderValue {
  font-family: var(--escuelaHelp-font-mono);
  font-size: 0.78rem;
  color: var(--escuelaHelp-gold);
}

/* ---------- select ---------- */
.escuelaHelp-selectWrap { position: relative; }

.escuelaHelp-select {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  background: var(--escuelaHelp-field-bg);
  border: 1px solid rgba(189, 168, 56, 0.35);
  border-radius: 10px;
  color: var(--escuelaHelp-gold);
  font-family: var(--escuelaHelp-font-main);
  font-size: 0.85rem;
  padding: 10px 34px 10px 12px;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.escuelaHelp-select option { background: #0A0D20; color: var(--escuelaHelp-gold); }

.escuelaHelp-selectWrap::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--escuelaHelp-gold);
  border-bottom: 2px solid var(--escuelaHelp-gold);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}

/* ---------- coefficient rows ---------- */
.escuelaHelp-coefficients {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.escuelaHelp-coeffRow {
  display: grid;
  grid-template-columns: 30px 1fr auto;
  gap: 10px;
  align-items: center;
}

.escuelaHelp-coeffLabel {
  font-family: var(--escuelaHelp-font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  text-align: center;
  color: var(--escuelaHelp-gold);
  background: rgba(189, 168, 56, 0.08);
  border: 1px solid rgba(189, 168, 56, 0.25);
  border-radius: 8px;
  padding: 7px 0;
}

.escuelaHelp-coeffInput,
.escuelaHelp-coeffSelect {
  width: 100%;
  font-family: var(--escuelaHelp-font-mono);
  font-size: 0.88rem;
  color: var(--escuelaHelp-gold);
  background: var(--escuelaHelp-field-bg);
  border: 1px solid rgba(189, 168, 56, 0.3);
  border-radius: 8px;
  padding: 8px 10px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.escuelaHelp-coeffSelect { padding-right: 30px; cursor: pointer; }

.escuelaHelp-coeffHint {
  font-size: 0.66rem;
  line-height: 1.3;
  text-align: right;
  max-width: 96px;
  color: var(--escuelaHelp-gold-dim);
}

/* ---------- number inputs (coefficients + range) ---------- */
.escuelaHelp-coeffInput:focus,
.escuelaHelp-coeffSelect:focus,
.escuelaHelp-rangeInput:focus,
.escuelaHelp-select:focus {
  outline: none;
  border-color: var(--escuelaHelp-gold);
  box-shadow: 0 0 0 3px rgba(155, 17, 30, 0.3), 0 0 12px rgba(189, 168, 56, 0.35);
}

.escuelaHelp-invalid {
  border-color: #E23A4E !important;
  box-shadow: 0 0 0 3px rgba(155, 17, 30, 0.35) !important;
}

/* ---------- visible-range grid ---------- */
.escuelaHelp-rangeGrid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.escuelaHelp-rangeField {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.escuelaHelp-rangeLabel {
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(189, 168, 56, 0.72);
}

.escuelaHelp-rangeInput {
  width: 100%;
  font-family: var(--escuelaHelp-font-mono);
  font-size: 0.85rem;
  color: var(--escuelaHelp-gold);
  background: var(--escuelaHelp-field-bg);
  border: 1px solid rgba(189, 168, 56, 0.3);
  border-radius: 8px;
  padding: 8px 10px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

/* ---------- buttons ---------- */
.escuelaHelp-buttonRow {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 2px;
}

.escuelaHelp-btn {
  appearance: none;
  border: none;
  border-radius: 10px;
  padding: 10px 12px;
  font-family: var(--escuelaHelp-font-main);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--escuelaHelp-gold);
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.escuelaHelp-btnPrimary {
  background: linear-gradient(135deg, var(--escuelaHelp-ruby) 0%, #6A0F86 55%, var(--escuelaHelp-blue) 100%);
  box-shadow: 0 4px 18px rgba(155, 17, 30, 0.45), inset 0 0 12px rgba(255, 255, 255, 0.06);
}

.escuelaHelp-btnPrimary:hover { filter: brightness(1.2); transform: translateY(-1px); }

.escuelaHelp-btnGhost {
  background: transparent;
  border: 1px solid rgba(189, 168, 56, 0.45);
}

.escuelaHelp-btnGhost:hover {
  background: rgba(189, 168, 56, 0.1);
  box-shadow: 0 0 12px rgba(189, 168, 56, 0.25);
}

.escuelaHelp-btn:active { transform: translateY(0) scale(0.98); }

/* ---------- sliders ---------- */
.escuelaHelp-slider {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--escuelaHelp-ruby), var(--escuelaHelp-blue));
  outline: none;
  cursor: pointer;
}

.escuelaHelp-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--escuelaHelp-gold);
  border: 2px solid #0A0C1E;
  box-shadow: 0 0 10px rgba(189, 168, 56, 0.85);
  cursor: pointer;
}

.escuelaHelp-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--escuelaHelp-gold);
  border: 2px solid #0A0C1E;
  box-shadow: 0 0 10px rgba(189, 168, 56, 0.85);
  cursor: pointer;
}

/* ---------- canvas stage ---------- */
.escuelaHelp-stage {
  position: relative;
  min-height: 660px;
  background: #04050D;
  user-select: none;
  -webkit-user-select: none;
  overflow: hidden;
}

#escuelaHelpCanvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  touch-action: none;
}

.escuelaHelp-stage.escuelaHelp-grabbing #escuelaHelpCanvas { cursor: grabbing; }

.escuelaHelp-stage::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  box-shadow: inset 0 0 90px rgba(0, 0, 10, 0.55);
}

/* ---------- floating readout (cursor coordinates + trace) ---------- */
.escuelaHelp-readout {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 3;
  min-width: 178px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid rgba(189, 168, 56, 0.3);
  background: rgba(3, 5, 14, 0.68);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 0 20px rgba(0, 0, 255, 0.15);
  font-family: var(--escuelaHelp-font-mono);
  font-size: 0.74rem;
  color: var(--escuelaHelp-gold);
  pointer-events: none;
}

.escuelaHelp-readoutRow {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  line-height: 1.7;
}

.escuelaHelp-readoutKey {
  color: rgba(189, 168, 56, 0.6);
  letter-spacing: 0.08em;
}

.escuelaHelp-readoutVal { color: var(--escuelaHelp-gold); }

.escuelaHelp-readoutStatus {
  margin-top: 4px;
  font-size: 0.66rem;
  color: rgba(226, 58, 78, 0.95);
}

.escuelaHelp-readoutStatus:empty { display: none; }

/* ---------- interaction hint ---------- */
.escuelaHelp-hint {
  position: absolute;
  right: 14px;
  bottom: 12px;
  z-index: 3;
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: rgba(189, 168, 56, 0.5);
  background: rgba(3, 5, 14, 0.55);
  border: 1px solid rgba(189, 168, 56, 0.2);
  border-radius: 999px;
  padding: 6px 10px;
  pointer-events: none;
}

/* ---------- focus / selection polish ---------- */
.escuelaHelp-panel :focus-visible {
  outline: 2px solid var(--escuelaHelp-gold);
  outline-offset: 2px;
}

.escuelaHelp-panel ::selection {
  background: rgba(155, 17, 30, 0.6);
  color: #F4E9BC;
}

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .escuelaHelp-layout { grid-template-columns: 1fr; }

  .escuelaHelp-stage {
    order: -1;
    min-height: 0;
    height: 56vh;
  }

  .escuelaHelp-sidebar {
    border-right: none;
    border-top: 1px solid var(--escuelaHelp-line);
  }
}

@media (max-width: 560px) {
  .escuelaHelp-header { padding: 14px 16px 10px; }

  .escuelaHelp-formulaChip { margin-left: 0; }

  .escuelaHelp-title { font-size: 0.88rem; }

  .escuelaHelp-stage { height: 50vh; }

  .escuelaHelp-coeffHint { display: none; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .escuelaHelp-orb,
  .escuelaHelp-headerDivider {
    animation: none;
  }
}