:root {
  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  position: relative;
  overflow: hidden;
}

.visual-shell__back {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 30;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(0, 0, 0, 0.45);
  color: #f5f7ff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  backdrop-filter: blur(10px);
}

.visual-overlay {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 18px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(5, 3, 13, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(14px);
  color: #f5f7ff;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.55);
  z-index: 20;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.visual-overlay__header {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.visual-overlay__eyebrow {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
}

.visual-overlay__title {
  font-size: 18px;
  font-weight: 700;
}

.visual-overlay__controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.visual-overlay__row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}

.visual-overlay__row label {
  color: #f1f1f7;
}

.visual-overlay__row input[type="range"] {
  width: 100%;
}

.visual-overlay__value {
  color: rgba(255, 255, 255, 0.7);
  font-variant-numeric: tabular-nums;
}

.visual-overlay__toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #f1f1f7;
}

.visual-overlay__toggle input {
  accent-color: #7c3aed;
}

.visual-overlay__footer {
  display: flex;
  gap: 10px;
  align-items: center;
}

.visual-overlay__btn {
  flex: 1;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
}

.visual-overlay__btn.primary {
  background: linear-gradient(135deg, #7c3aed, #22d3ee);
  border-color: rgba(124, 58, 237, 0.55);
  color: #0b0a14;
}

.visual-overlay--hidden {
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
}

@media (min-width: 900px) {
  .visual-overlay {
    left: auto;
    width: 360px;
    bottom: 20px;
    right: 20px;
  }
}