:root {
  --escuela_vector-gold: #BDA838;
  --escuela_vector-gold-dim: rgba(189, 168, 56, 0.60);
  --escuela_vector-gold-faint: rgba(189, 168, 56, 0.24);
  --escuela_vector-ruby: #9B111E;
  --escuela_vector-blue: #0000FF;
  --escuela_vector-space-0: #03040b;
  --escuela_vector-space-1: #0a0716;
  --escuela_vector-space-2: #140a1e;
  --escuela_vector-grad-primary: linear-gradient(135deg, #9B111E 0%, #5c0c56 48%, #0000FF 100%);
  --escuela_vector-font-ui: "Merriweather", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --escuela_vector-font-mono: ui-monospace, "Cascadia Mono", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
html, body { height: 100%; }

body {
  font-family: var(--escuela_vector-font-ui);
  color: var(--escuela_vector-gold);
  min-height: 100vh;
  letter-spacing: 0.01em;
  background:
    radial-gradient(1100px 700px at 12% -10%, rgba(155, 17, 30, 0.16), transparent 60%),
    radial-gradient(1200px 800px at 105% 110%, rgba(0, 0, 255, 0.15), transparent 60%),
    radial-gradient(ellipse at 50% 40%, var(--escuela_vector-space-2) 0%, var(--escuela_vector-space-1) 45%, var(--escuela_vector-space-0) 100%);
  background-attachment: fixed;
}

.escuela_vector-app {
  max-width: 1440px;
  margin: 0 auto;
  padding: 20px 20px 10px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 100vh;
}

/* ============================== HEADER ================================= */

.escuela_vector-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 15px 22px;
  border-radius: 16px;
  border: 1px solid var(--escuela_vector-gold-faint);
  background:
    linear-gradient(120deg, rgba(155, 17, 30, 0.40) 0%, rgba(16, 9, 28, 0.55) 48%, rgba(0, 0, 255, 0.32) 100%);
  box-shadow:
    0 0 26px rgba(155, 17, 30, 0.22),
    0 0 36px rgba(0, 0, 255, 0.16),
    inset 0 0 24px rgba(3, 4, 11, 0.55);
  position: relative;
  overflow: hidden;
}

.escuela_vector-header::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #9B111E 18%, #BDA838 50%, #0000FF 82%, transparent);
  opacity: 0.9;
}

.escuela_vector-header-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.escuela_vector-title {
  font-size: clamp(1.1rem, 2.2vw, 1.55rem);
  letter-spacing: 0.34em;
  font-weight: 700;
  color: var(--escuela_vector-gold);
  animation: escuela_vector-pulse 5.5s ease-in-out infinite;
}

.escuela_vector-subtitle {
  margin-top: 5px;
  font-size: 0.70rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--escuela_vector-gold-dim);
}

@keyframes escuela_vector-pulse {
  0%, 100% { text-shadow: 0 0 12px rgba(189, 168, 56, 0.45), 0 0 26px rgba(155, 17, 30, 0.45); }
  50%      { text-shadow: 0 0 18px rgba(189, 168, 56, 0.80), 0 0 42px rgba(0, 0, 255, 0.55); }
}

/* ========================= MODE SWITCH (2D/3D) ========================= */

.escuela_vector-mode-switch {
  display: flex;
  gap: 6px;
  padding: 5px;
  border-radius: 999px;
  border: 1px solid var(--escuela_vector-gold-faint);
  background: rgba(3, 4, 11, 0.70);
  flex-shrink: 0;
}

.escuela_vector-mode-btn {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--escuela_vector-gold-dim);
  font-family: var(--escuela_vector-font-ui);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  padding: 9px 20px;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.escuela_vector-mode-btn:hover {
  color: var(--escuela_vector-gold);
  border-color: var(--escuela_vector-gold-faint);
}

.escuela_vector-mode-btn.escuela_vector-is-active {
  color: var(--escuela_vector-gold);
  background: var(--escuela_vector-grad-primary);
  border-color: rgba(189, 168, 56, 0.55);
  box-shadow: 0 0 16px rgba(155, 17, 30, 0.55), 0 0 24px rgba(0, 0, 255, 0.45);
  text-shadow: 0 0 8px rgba(189, 168, 56, 0.60);
}

.escuela_vector-mode-btn:focus-visible,
.escuela_vector-tab-btn:focus-visible,
.escuela_vector-radio-input:focus-visible + .escuela_vector-radio-pill,
.escuela_vector-op-check:focus-visible + .escuela_vector-op-pill {
  outline: 2px solid var(--escuela_vector-gold);
  outline-offset: 2px;
}

/* ============================== LAYOUT ================================= */

.escuela_vector-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 16px;
  align-items: stretch;
  flex: 1;
}

.escuela_vector-stage { display: flex; min-width: 0; }

.escuela_vector-canvas-wrap {
  position: relative;
  flex: 1;
  min-width: 0;
  height: clamp(480px, calc(100vh - 220px), 800px);
  border-radius: 18px;
  border: 1px solid var(--escuela_vector-gold-faint);
  overflow: hidden;
  background: radial-gradient(ellipse at 30% 25%, #0b0918 0%, #050510 55%, #020208 100%);
  box-shadow:
    0 0 30px rgba(0, 0, 255, 0.14),
    0 0 46px rgba(155, 17, 30, 0.15),
    inset 0 0 64px rgba(2, 3, 10, 0.85);
  user-select: none;
}

.escuela_vector-canvas-wrap.escuela_vector-is-3d { cursor: grab; }
.escuela_vector-canvas-wrap.escuela_vector-is-dragging { cursor: grabbing; }

#escuela_vectorCanvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.escuela_vector-canvas-hud {
  position: absolute;
  left: 14px;
  bottom: 12px;
  font-family: var(--escuela_vector-font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--escuela_vector-gold-dim);
  pointer-events: none;
  text-shadow: 0 0 8px rgba(0, 0, 0, 0.85);
}

/* ============================ CONTROL PANEL ============================ */

.escuela_vector-panel {
  display: flex;
  flex-direction: column;
  gap: 13px;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid var(--escuela_vector-gold-faint);
  background:
    linear-gradient(155deg, rgba(155, 17, 30, 0.32) 0%, rgba(12, 8, 24, 0.74) 42%, rgba(0, 0, 255, 0.28) 100%);
  box-shadow:
    0 0 28px rgba(155, 17, 30, 0.18),
    0 0 42px rgba(0, 0, 255, 0.15),
    inset 0 0 26px rgba(3, 4, 11, 0.60);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(189, 168, 56, 0.5) transparent;
}

.escuela_vector-panel::-webkit-scrollbar { width: 8px; }
.escuela_vector-panel::-webkit-scrollbar-track { background: transparent; }
.escuela_vector-panel::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(155, 17, 30, 0.85), rgba(0, 0, 255, 0.85));
  border-radius: 8px;
}

.escuela_vector-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 5px;
  border-radius: 12px;
  background: rgba(3, 4, 11, 0.72);
  border: 1px solid var(--escuela_vector-gold-faint);
}

.escuela_vector-tab-btn {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--escuela_vector-gold-dim);
  font-family: var(--escuela_vector-font-ui);
  font-weight: 700;
  font-size: 0.80rem;
  letter-spacing: 0.12em;
  padding: 9px 10px;
  border-radius: 9px;
  cursor: pointer;
  transition: color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.escuela_vector-tab-btn:hover { color: var(--escuela_vector-gold); }

.escuela_vector-tab-btn.escuela_vector-is-active {
  color: var(--escuela_vector-gold);
  background: var(--escuela_vector-grad-primary);
  box-shadow: 0 0 14px rgba(155, 17, 30, 0.5), 0 0 20px rgba(0, 0, 255, 0.4);
  text-shadow: 0 0 8px rgba(189, 168, 56, 0.6);
}

/* ============================ GROUPS / FIELDS ========================== */

.escuela_vector-tab-page {
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.escuela_vector-group {
  border: 1px solid var(--escuela_vector-gold-faint);
  border-radius: 14px;
  padding: 12px;
  background: rgba(3, 4, 11, 0.52);
  box-shadow: inset 0 0 18px rgba(2, 3, 10, 0.60);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.escuela_vector-group-title {
  font-size: 0.70rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--escuela_vector-gold);
  display: flex;
  align-items: center;
  gap: 8px;
}

.escuela_vector-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.escuela_vector-dot-a {
  background: radial-gradient(circle at 35% 35%, #ff8d99, #9B111E 72%);
  box-shadow: 0 0 10px rgba(255, 80, 95, 0.85);
}
.escuela_vector-dot-b {
  background: radial-gradient(circle at 35% 35%, #8d8dff, #0000FF 72%);
  box-shadow: 0 0 10px rgba(85, 85, 255, 0.90);
}
.escuela_vector-dot-gold {
  background: radial-gradient(circle at 35% 35%, #ffe9a0, #BDA838 72%);
  box-shadow: 0 0 10px rgba(189, 168, 56, 0.85);
}

.escuela_vector-input-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.escuela_vector-labeled-row {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 8px;
  align-items: center;
}

.escuela_vector-row-tag {
  font-family: var(--escuela_vector-font-mono);
  font-size: 0.80rem;
  font-weight: 700;
  color: var(--escuela_vector-gold-dim);
  text-align: center;
}

.escuela_vector-field {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(3, 4, 11, 0.78);
  border: 1px solid var(--escuela_vector-gold-faint);
  border-radius: 9px;
  padding: 6px 8px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.escuela_vector-field:focus-within {
  border-color: var(--escuela_vector-gold);
  box-shadow: 0 0 12px rgba(189, 168, 56, 0.35);
}

.escuela_vector-field-label {
  font-family: var(--escuela_vector-font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--escuela_vector-gold);
  min-width: 10px;
  text-align: center;
  text-shadow: 0 0 6px rgba(189, 168, 56, 0.45);
}

.escuela_vector-input {
  flex: 1;
  width: 100%;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  color: var(--escuela_vector-gold);
  font-family: var(--escuela_vector-font-mono);
  font-size: 0.90rem;
  font-weight: 600;
  text-align: right;
  appearance: textfield;
  -moz-appearance: textfield;
}

.escuela_vector-input::-webkit-outer-spin-button,
.escuela_vector-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.escuela_vector-input:disabled { opacity: 0.35; }

/* Scalar k row + range slider */
.escuela_vector-k-row {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

.escuela_vector-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 5px;
  border-radius: 5px;
  background: linear-gradient(90deg, #9B111E, #BDA838, #0000FF);
  outline: none;
  cursor: pointer;
}

.escuela_vector-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #ffe9a0, #BDA838 65%, #6d5e14);
  border: 1px solid rgba(255, 240, 180, 0.75);
  box-shadow: 0 0 12px rgba(189, 168, 56, 0.85);
  cursor: grab;
}

.escuela_vector-range::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #ffe9a0, #BDA838 65%, #6d5e14);
  border: 1px solid rgba(255, 240, 180, 0.75);
  box-shadow: 0 0 12px rgba(189, 168, 56, 0.85);
  cursor: grab;
}

.escuela_vector-range::-moz-range-track {
  height: 5px;
  border-radius: 5px;
  background: linear-gradient(90deg, #9B111E, #BDA838, #0000FF);
}

/* ============================ OPERATION PILLS ========================== */

.escuela_vector-op-list { display: flex; flex-wrap: wrap; gap: 8px; }

.escuela_vector-op-item { position: relative; }

.escuela_vector-op-check { position: absolute; opacity: 0; pointer-events: none; }

.escuela_vector-op-pill {
  display: inline-block;
  padding: 7px 15px;
  border-radius: 999px;
  border: 1px solid var(--escuela_vector-gold-faint);
  color: var(--escuela_vector-gold-dim);
  font-family: var(--escuela_vector-font-mono);
  font-size: 0.80rem;
  font-weight: 700;
  cursor: pointer;
  background: rgba(3, 4, 11, 0.62);
  user-select: none;
  transition: color 0.22s ease, background 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.escuela_vector-op-item:hover .escuela_vector-op-pill {
  border-color: var(--escuela_vector-gold-dim);
  color: var(--escuela_vector-gold);
}

.escuela_vector-op-check:checked + .escuela_vector-op-pill {
  color: var(--escuela_vector-gold);
  background: var(--escuela_vector-grad-primary);
  border-color: rgba(189, 168, 56, 0.55);
  box-shadow: 0 0 14px rgba(155, 17, 30, 0.50), 0 0 22px rgba(0, 0, 255, 0.42);
  text-shadow: 0 0 8px rgba(189, 168, 56, 0.55);
}

/* ============================== READOUTS =============================== */

.escuela_vector-readout {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--escuela_vector-font-mono);
}

.escuela_vector-readout-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  padding: 5px 9px;
  border-radius: 8px;
  background: rgba(10, 7, 22, 0.58);
  border: 1px solid rgba(189, 168, 56, 0.14);
}

.escuela_vector-readout-label {
  font-size: 0.70rem;
  letter-spacing: 0.08em;
  color: var(--escuela_vector-gold-dim);
  white-space: nowrap;
}

.escuela_vector-readout-value {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--escuela_vector-gold);
  text-align: right;
  text-shadow: 0 0 8px rgba(189, 168, 56, 0.40);
  word-break: break-all;
}

.escuela_vector-note {
  font-size: 0.66rem;
  line-height: 1.55;
  color: var(--escuela_vector-gold-dim);
  font-style: italic;
}

/* ============================ PLANE SOLVER ============================= */

.escuela_vector-radio-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.escuela_vector-radio-item { position: relative; }

.escuela_vector-radio-input { position: absolute; opacity: 0; pointer-events: none; }

.escuela_vector-radio-pill {
  display: block;
  text-align: center;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--escuela_vector-gold-faint);
  color: var(--escuela_vector-gold-dim);
  font-family: var(--escuela_vector-font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  cursor: pointer;
  background: rgba(3, 4, 11, 0.62);
  user-select: none;
  transition: color 0.22s ease, background 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.escuela_vector-radio-item:hover .escuela_vector-radio-pill {
  border-color: var(--escuela_vector-gold-dim);
  color: var(--escuela_vector-gold);
}

.escuela_vector-radio-input:checked + .escuela_vector-radio-pill {
  color: var(--escuela_vector-gold);
  background: var(--escuela_vector-grad-primary);
  border-color: rgba(189, 168, 56, 0.55);
  box-shadow: 0 0 14px rgba(155, 17, 30, 0.50), 0 0 22px rgba(0, 0, 255, 0.42);
  text-shadow: 0 0 8px rgba(189, 168, 56, 0.55);
}

.escuela_vector-plane-result {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.escuela_vector-plane-equation {
  font-family: var(--escuela_vector-font-mono);
  font-size: 1.04rem;
  font-weight: 700;
  color: var(--escuela_vector-gold);
  text-align: center;
  padding: 13px 10px;
  border-radius: 10px;
  border: 1px solid var(--escuela_vector-gold-faint);
  background: rgba(3, 4, 11, 0.72);
  text-shadow: 0 0 12px rgba(189, 168, 56, 0.50);
  box-shadow:
    inset 0 0 16px rgba(0, 0, 255, 0.14),
    inset 0 0 16px rgba(155, 17, 30, 0.14);
  letter-spacing: 0.05em;
  word-break: break-all;
}

.escuela_vector-plane-meta {
  font-family: var(--escuela_vector-font-mono);
  font-size: 0.72rem;
  line-height: 1.75;
  color: var(--escuela_vector-gold-dim);
}

.escuela_vector-plane-meta b { color: var(--escuela_vector-gold); font-weight: 700; }

.escuela_vector-plane-error {
  font-size: 0.78rem;
  line-height: 1.5;
  color: #ff9aa5;
  background: rgba(155, 17, 30, 0.24);
  border: 1px solid rgba(155, 17, 30, 0.60);
  padding: 9px 11px;
  border-radius: 9px;
}

/* =============================== FOOTER ================================ */

.escuela_vector-footer {
  text-align: center;
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(189, 168, 56, 0.42);
  padding: 2px 0 10px;
}

/* ============================== RESPONSIVE ============================= */

@media (max-width: 1020px) {
  .escuela_vector-layout { grid-template-columns: 1fr; }
  .escuela_vector-canvas-wrap { height: clamp(380px, 60vh, 560px); }
  .escuela_vector-header { flex-direction: column; align-items: flex-start; }
}