:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #020508;
  color: #f8fbff;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 44%, rgba(10, 52, 76, 0.38), transparent 48%),
    linear-gradient(180deg, #020508 0%, #05070a 100%);
}

button,
input,
select {
  font: inherit;
}

.app-shell {
  position: fixed;
  inset: 0;
  min-height: 100dvh;
  overflow: hidden;
  touch-action: none;
}

#sphereCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.top-bar {
  position: absolute;
  top: max(14px, env(safe-area-inset-top));
  left: max(12px, env(safe-area-inset-left));
  right: max(12px, env(safe-area-inset-right));
  display: grid;
  grid-template-columns: 46px 46px;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  pointer-events: none;
}

.ui-toggle {
  position: absolute;
  z-index: 3;
  top: calc(max(14px, env(safe-area-inset-top)) + 58px);
  right: max(12px, env(safe-area-inset-right));
  width: 46px;
  height: 46px;
  border: 1px solid rgba(117, 223, 255, 0.42);
  border-radius: 8px;
  color: #ecfbff;
  background: rgba(2, 8, 14, 0.74);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  cursor: pointer;
  box-shadow: 0 0 22px rgba(29, 190, 255, 0.14);
  backdrop-filter: blur(10px);
}

.ui-toggle:active {
  transform: translateY(1px);
}

.app-shell.ui-hidden .top-bar,
.app-shell.ui-hidden .controls label:not(.selected-control),
.app-shell.ui-hidden .category-title {
  opacity: 0;
  pointer-events: none;
}

.app-shell.ui-hidden .top-bar,
.app-shell.ui-hidden .controls label:not(.selected-control) {
  display: none;
}

.app-shell.ui-hidden .controls {
  bottom: max(18px, env(safe-area-inset-bottom));
  gap: 8px;
}

.top-bar,
.controls,
.category-title,
.top-bar .icon-button,
.controls label {
  transition: opacity 180ms ease;
}

.icon-button {
  width: 46px;
  height: 46px;
  border: 1px solid rgba(117, 223, 255, 0.42);
  border-radius: 8px;
  color: #ecfbff;
  background: rgba(2, 8, 14, 0.64);
  font-size: 34px;
  line-height: 1;
  cursor: pointer;
  pointer-events: auto;
  box-shadow: 0 0 22px rgba(29, 190, 255, 0.14);
}

.icon-button:active {
  transform: translateY(1px);
}

.status-readout {
  display: none;
  min-width: 0;
  height: 46px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  border: 1px solid rgba(117, 223, 255, 0.25);
  border-radius: 8px;
  background: rgba(1, 9, 15, 0.54);
  box-shadow: 0 0 28px rgba(21, 186, 255, 0.11);
  backdrop-filter: blur(10px);
}

.advanced-control {
  display: none !important;
}

.status-readout span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: rgba(235, 248, 255, 0.76);
  font-size: 13px;
}

.status-readout strong {
  color: #71e8ff;
  font-size: 16px;
  min-width: 42px;
  text-align: right;
}

.controls {
  position: absolute;
  left: max(14px, env(safe-area-inset-left));
  right: max(14px, env(safe-area-inset-right));
  bottom: calc(70px + env(safe-area-inset-bottom));
  display: grid;
  gap: 14px;
  pointer-events: auto;
}

.controls label {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid rgba(117, 223, 255, 0.22);
  border-radius: 8px;
  background: rgba(2, 9, 15, 0.58);
  backdrop-filter: blur(10px);
}

.controls label.has-value {
  grid-template-columns: 74px 42px minmax(0, 1fr);
}

.controls label.play-control {
  grid-template-columns: 74px minmax(0, 1fr);
}

.controls span {
  color: rgba(240, 250, 255, 0.8);
  font-size: 13px;
}

.controls output {
  color: #71e8ff;
  font-size: 13px;
  font-weight: 700;
  text-align: right;
}

input[type="range"] {
  width: 100%;
  accent-color: #49dfff;
}

.play-button {
  width: 100%;
  height: 30px;
  border: 1px solid rgba(117, 223, 255, 0.34);
  border-radius: 8px;
  color: #ecfbff;
  background: rgba(2, 8, 14, 0.82);
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 0 18px rgba(29, 190, 255, 0.11);
}

.play-button[aria-pressed="true"] {
  color: #071116;
  background: #71e8ff;
  box-shadow: 0 0 24px rgba(113, 232, 255, 0.28);
}

select {
  width: 100%;
  min-width: 0;
  height: 30px;
  border: 1px solid rgba(117, 223, 255, 0.28);
  border-radius: 8px;
  color: #ecfbff;
  background: rgba(2, 8, 14, 0.82);
  padding: 0 8px;
  outline: none;
}

.category-title {
  position: absolute;
  left: 50%;
  top: max(18px, env(safe-area-inset-top));
  transform: translateX(-50%);
  max-width: calc(100% - 28px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: rgba(220, 247, 255, 0.82);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-shadow: 0 0 14px rgba(64, 214, 255, 0.48);
  pointer-events: none;
}

@media (min-width: 760px) {
  .ui-toggle {
    right: max(18px, env(safe-area-inset-right));
  }

  .controls {
    left: 50%;
    right: auto;
    width: min(1120px, calc(100% - 32px));
    transform: translateX(-50%);
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .category-title {
    font-size: 13px;
  }
}