:root {
  color-scheme: dark;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background-color: #040608;
  color: #f0f6ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow: hidden;
}

canvas {
  display: block;
  width: 100vw;
  height: 100vh;
}

.ui-panel {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  width: 384px;
  max-height: calc(100vh - 3rem);
  overflow-y: auto;
  padding: 1rem 1.25rem;
  border-radius: 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(2, 6, 12, 0.78);
  backdrop-filter: blur(6px);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.3);
  gap: 1rem;
  display: flex;
  flex-direction: column;
}

.tab-bar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tab-button {
  flex: 1;
  padding: 0.5rem 0.75rem;
  border-radius: 0.6rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(4, 6, 8, 0.55);
  color: inherit;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.tab-button.active {
  background: rgba(110, 161, 255, 0.25);
  border-color: rgba(110, 161, 255, 0.6);
}

.tab-panels {
  flex: 1;
  display: grid;
}

.tab-panel {
  display: none;
  gap: 1rem;
}

.tab-panel.active {
  display: grid;
  gap: 1rem;
}

.tab-panel[hidden] {
  display: none;
}

.panel-header h1 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.panel-header p {
  margin: 0.35rem 0 0;
  font-size: 0.85rem;
  color: rgba(240, 246, 255, 0.65);
  line-height: 1.4;
}

.panel-section {
  display: grid;
  gap: 0.75rem;
}

.axis-control {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: end;
}

.axis-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
  gap: 0.75rem;
}

.axis-block {
  display: grid;
  gap: 0.5rem;
  align-content: start;
}

.axis-toggle {
  justify-content: flex-start;
}

.field-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  align-items: end;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(240, 246, 255, 0.6);
}

.toggle input {
  width: 1rem;
  height: 1rem;
}

.panel-section h2 {
  margin: 0;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(240, 246, 255, 0.75);
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field-label {
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(240, 246, 255, 0.62);
}

.range-settings {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
  font-size: 0.78rem;
  color: rgba(240, 246, 255, 0.7);
}

.range-settings label {
  display: grid;
  gap: 0.35rem;
}

.range-settings span {
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.range-settings input {
  width: 100%;
  padding: 0.4rem 0.6rem;
  border-radius: 0.55rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(4, 6, 8, 0.6);
  color: inherit;
  font-size: 0.85rem;
}

input[type="color"] {
  width: 100%;
  height: 2.25rem;
  padding: 0;
  border-radius: 0.55rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(4, 6, 8, 0.6);
}

.button-row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.primary-button,
.secondary-button {
  flex: 1;
  padding: 0.6rem 0.8rem;
  border-radius: 0.7rem;
  border: 1px solid transparent;
  background: rgba(110, 161, 255, 0.2);
  color: inherit;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.secondary-button {
  background: rgba(4, 6, 8, 0.6);
  border-color: rgba(255, 255, 255, 0.12);
}

.primary-button:hover,
.secondary-button:hover {
  border-color: rgba(110, 161, 255, 0.6);
  background: rgba(110, 161, 255, 0.3);
}

input[type="file"],
select {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border-radius: 0.6rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(4, 6, 8, 0.6);
  color: inherit;
  font-size: 0.93rem;
}

input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  background: transparent;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 999px;
}

input[type="range"]::-moz-range-track {
  height: 6px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 999px;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #6ea1ff;
  margin-top: -5px;
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #6ea1ff;
  cursor: pointer;
}

.dropzone {
  padding: 0.65rem 0.8rem;
  border-radius: 0.6rem;
  border: 1px dashed rgba(255, 255, 255, 0.2);
  text-align: center;
  font-size: 0.85rem;
  color: rgba(240, 246, 255, 0.65);
}

.dropzone.drag-enter {
  border-color: #6ea1ff;
  background: rgba(110, 161, 255, 0.12);
}

.status {
  font-size: 0.8rem;
  color: rgba(240, 246, 255, 0.6);
  min-height: 1.2rem;
}

.category-config,
.layer-filters {
  display: grid;
  gap: 0.6rem;
}

.category-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  gap: 0.5rem;
  align-items: center;
}

.category-check {
  display: flex;
  align-items: center;
  justify-content: center;
}

.category-label {
  font-size: 0.85rem;
  color: rgba(240, 246, 255, 0.85);
}

.category-row select {
  width: auto;
  min-width: 90px;
}

.category-row input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
  cursor: pointer;
}

input[type="color"] {
  border: none;
  background: none;
  width: 42px;
  height: 32px;
  padding: 0;
}

.layer-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.6rem;
  align-items: center;
}

.layer-check {
  display: flex;
  align-items: center;
  justify-content: center;
}

.layer-check input {
  width: 1rem;
  height: 1rem;
  cursor: pointer;
}

.layer-label {
  font-size: 0.85rem;
  color: rgba(240, 246, 255, 0.85);
}

.empty-hint {
  font-size: 0.8rem;
  color: rgba(240, 246, 255, 0.55);
}

.camera-controls {
  position: absolute;
  right: 1.5rem;
  bottom: 1.5rem;
  display: grid;
  gap: 0.85rem;
  padding: 0.9rem 1.1rem;
  border-radius: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(2, 6, 12, 0.78);
  backdrop-filter: blur(6px);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.3);
  width: 240px;
}

.site-footer {
  position: fixed;
  right: 14px;
  bottom: 2px;
  font-size: 0.585rem;
  line-height: 1.1;
  color: rgba(255, 255, 255, 0.96);
  -webkit-text-stroke: 0.25px rgba(0, 0, 0, 0.75);
  text-shadow: 0 0 3px rgba(0, 0, 0, 0.8);
  white-space: nowrap;
  letter-spacing: 0.08em;
}

.site-footer a {
  color: inherit;
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus {
  text-decoration: underline;
}

.camera-section {
  display: grid;
  gap: 0.5rem;
}

.camera-section h3 {
  margin: 0;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(240, 246, 255, 0.7);
}

.camera-buttons {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.camera-button {
  flex: 1;
  padding: 0.45rem 0.6rem;
  border-radius: 0.6rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(4, 6, 8, 0.6);
  color: inherit;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.camera-button[data-camera-view="free"] {
  flex-basis: 100%;
}

.camera-button.active {
  background: rgba(110, 161, 255, 0.25);
  border-color: rgba(110, 161, 255, 0.5);
}

.camera-button:hover {
  border-color: rgba(110, 161, 255, 0.6);
}