:root {
  --okno-tlo: #fff;
  --okno-tekst: var(--text-dark, #111827);
  --okno-cien: 0 10px 25px rgba(0, 0, 0, 0.10);
  --okno-border: 1px solid rgba(0, 0, 0, 0.06);
  --okno-promien: 18px;

  --panel-tlo: #f9fafb;
  --panel-border: 1px solid rgba(0, 0, 0, 0.06);

  --accent: #2563eb;
  --accent-2: #1d4ed8;

  --btn-tlo: #2563eb;
  --btn-tlo-hover: #1d4ed8;
  --btn-tekst: #fff;

  --tekst-muted: #6b7280;
  --tekst-obliczenia: #059669;

  --gap: 16px;
  --gap-lg: 24px;

  --okno-dur: 0.22s;
  --scroll-top-dur: 900ms;
}

html, body {
  scroll-behavior: smooth;
}

.okno-hidden { display: none !important; }
.okno-visible { display: block !important; }

#prawa-kolumna,
.prawy-obszar,
.prawy-panel {
  position: relative;
}

.okno-rozwiazania {
  position: absolute;
  top: 0;
  right: 0;

  width: clamp(560px, 48vw, 900px);
  min-height: clamp(280px, 36vh, 420px);

  background: var(--okno-tlo);
  color: var(--okno-tekst);
  border: var(--okno-border);
  border-radius: var(--okno-promien);
  box-shadow: var(--okno-cien);

  padding: var(--gap-lg);
  margin-left: var(--gap-lg);

  transform-origin: 90% 8%;
  will-change: transform, opacity, filter;
}

.okno-anim-in {
  animation: oknoPopIn var(--okno-dur) cubic-bezier(.4, 0, 1, 1) both;
}

.okno-anim-out {
  animation: oknoPopOut var(--okno-dur) cubic-bezier(.4, 0, 1, 1) both;
}

@keyframes oknoPopIn {
  from {
    opacity: 0;
    transform: translateY(-10px) scale(.98);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes oknoPopOut {
  from {
    opacity: 1;
    transform: none;
  }
  to {
    opacity: 0;
    transform: translateY(-10px) scale(.98);
  }
}

.okno-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap);
  margin-bottom: var(--gap-lg);
}

.okno-tytul {
  position: relative;
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;

  font: 700 1.15rem 'Poppins', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  letter-spacing: 0.2px;
}

.okno-tytul::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  height: 3px;
  width: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.okno-tytul-nr {
  display: inline-block;
  transform: translateY(-1px);
  padding: 0.15rem 0.55rem;
  border-radius: 9999px;

  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.3px;
  box-shadow: 0 6px 14px rgba(37, 99, 235, 0.25);
}

.okno-zamknij {
  appearance: none;
  border: 0;
  border-radius: 12px;
  background: var(--panel-tlo);
  border: var(--panel-border);
  padding: 8px 10px;
  cursor: pointer;
  line-height: 1;
}

.okno-tresc {
  display: grid;
  gap: var(--gap);
}

.okno-macierz {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 8px 4px;
}

.okno-macierz .macierz-wrap {
  margin: 0 auto;
  position: relative;
}

.macierz--okno {
  font-size: 1.05rem;
  position: relative;
  z-index: 1;
  border-collapse: separate;
  border-spacing: 12px 8px;
}

.macierz--okno td {
  padding: 10px 14px;
  border: none;
  position: relative;
  z-index: 1;
}

.macierz--okno td.mx-b {
  border-left: 2px solid #111 !important;
  padding-left: 12px;
}

.macierz--okno td.mx-pivot {
  outline: 3px solid #2b6df6;
  border-radius: 8px;
  box-shadow: 0 0 0 4px rgba(43, 109, 246, 0.16);
  background: transparent;
  z-index: 2;
}

.macierz--okno td.mx-pivot--wstecz {
  outline: 3px solid #7c3aed;
  border-radius: 8px;
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.18);
  background: transparent;
  z-index: 2;
}

.mx-pasy-wierszy {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.mx-pas {
  position: absolute;
  border-radius: 14px;
  pointer-events: none;
}

.mx-pas--pivot { background: rgba(210, 244, 234, 0.85); }
.mx-pas--cel   {
  background: rgba(255, 228, 128, 0.80);
  animation: gaussRowPulseAmber 2.0s ease-in-out infinite;
}

.macierz--okno td.mx-komorka-zmieniona {
  background: transparent !important;
  box-shadow: none !important;
}

.mx-blok,
.mx-znak,
.okno-macierz [data-rozwiazanie="znak"],
.okno-macierz .znak-operacji,
.okno-macierz .op-badge,
.okno-macierz .math-badge,
.okno-macierz .operation-badge {
  display: none !important;
  visibility: hidden !important;
}

.mx-legenda {
  position: absolute;
  right: var(--gap);
  bottom: var(--gap);
  background: var(--panel-tlo);
  border: var(--panel-border);
  border-radius: 10px;
  padding: 6px 10px;

  color: var(--tekst-muted);
  font-size: 0.88rem;
  line-height: 1.25;
  text-align: right;

  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  pointer-events: none;
}

.mx-legenda--hidden {
  display: none;
}

.mx-belka {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.mx-licznik {
  font-weight: 700;
  color: var(--okno-tekst);
}

.mx-sterowanie {
  display: flex;
  gap: 8px;
}

.mx-przycisk {
  appearance: none;
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: var(--btn-tlo);
  color: var(--btn-tekst);

  padding: 8px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.15s ease;
}

.mx-przycisk:hover {
  background: var(--btn-tlo-hover);
}

.mx-przycisk:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.mx-przycisk--reset {
  background: #6b7280;
  color: #fff;
}

.mx-przycisk--reset:hover {
  background: #4b5563;
}

.mx-opis {
  margin-top: 8px;
  color: var(--okno-tekst);
  font-family: 'Poppins', ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 1.02rem;
  line-height: 1.75;
  letter-spacing: 0.1px;
  white-space: pre-line;
}

.mx-opis::first-line {
  color: var(--okno-tekst);
}

@media (max-width: 1024px) {
  .okno-rozwiazania {
    position: static;
    width: 100%;
    margin-top: var(--gap-lg);
  }
}

.okno-macierz .macierz--aug::before,
.okno-macierz .macierz--aug::after {
  display: none !important;
  content: none !important;
  border: 0 !important;
}

.rozwiaz,
.btn-rozwiaz,
[data-rozwiaz] {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.mx-licznik-biezacy {
  background: none;
  color: inherit;
  padding: 0;
  border-radius: 0;
  font-weight: 600;
}

.mjx-chtml,
.mjx-container,
.mjx-math {
  font-family: inherit !important;
  line-height: 1.2;
}

.mx-opis .mjx-container,
.opis-kroku .mjx-container {
  font-size: 1em;
}

.okno-macierz .macierz-wrap { position: relative; }

.okno-macierz .mx-znak {
  display: block !important;
  visibility: visible !important;
  position: absolute;
  left: 0;
  top: 0;
  transform: translateY(-50%);
  padding: 6px 10px;
  border-radius: 9999px;
  background: var(--panel-tlo);
  border: var(--panel-border);
  color: var(--tekst-muted);
  font: 600 0.92rem ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  white-space: nowrap;
  pointer-events: none;
  box-shadow: 0 1px 2px rgba(0,0,0,.04);
  opacity: 0;
  transition: opacity .18s ease, transform .18s ease;
  z-index: 3;
}

.okno-macierz .mx-znak.aktywny {
  opacity: 1;
}

.okno-macierz .mx-blok {
  display: block !important;
  visibility: visible !important;
  position: absolute;
  z-index: 1;
  border-radius: 10px;
  background: rgba(250, 204, 21, .28);
  animation: mxBlinkBlock 1.35s ease-in-out infinite;
  pointer-events: none;
  opacity: 1;
}

.okno-macierz .mx-blok.aktywny {
  opacity: 1;
  animation: gaussBlokPuls 1.2s ease-in-out 0s 2 alternate;
}

@keyframes gaussBlokPuls {
  from { box-shadow: inset 0 0 0 1px rgba(0,0,0,.03), 0 0 0 0 rgba(245, 158, 11, .25); }
  to   { box-shadow: inset 0 0 0 1px rgba(0,0,0,.03), 0 0 0 14px rgba(245, 158, 11, 0); }
}

@keyframes gaussRowPulseAmber {
  0%   { background: rgba(255, 228, 128, 0.70); }
  50%  { background: rgba(255, 228, 128, 0.95); }
  100% { background: rgba(255, 228, 128, 0.70); }
}

@media (prefers-reduced-motion: reduce){
  .mx-pas--cel{ animation: none !important; }
}

@media (max-width: 640px) {
  .okno-macierz .mx-znak {
    font-size: 0.8rem;
    padding: 5px 8px;
  }
}

@media (max-width: 520px){
  .okno-macierz .mx-znak {
    font-size: 0.75rem;
    padding: 4px 7px;
  }
}