.environment-lab {
  padding: 32px 0 0;
}
.lab-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 28px;
}
.lab-heading h2 {
  margin-top: 15px;
  max-width: 430px;
  font-size: clamp(24px, 3.5vw, 32px);
  letter-spacing: -0.035em;
  line-height: 1.15;
}
.lab-heading > a {
  flex-shrink: 0;
  font-size: 13px;
  margin-bottom: 3px;
}
.lab-heading > a span {
  margin-left: 8px;
}
.lab-intro {
  margin-top: 16px;
  max-width: 510px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}
.world-card {
  margin-top: 28px;
}
.world-caption {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 16px;
}
.world-caption h3 {
  margin: 0;
  font-weight: 450;
  font-size: 16px;
  letter-spacing: -0.025em;
}
.world-number {
  font:
    11px ui-monospace,
    monospace;
  color: var(--clay);
}
.world-caption > span:last-child {
  margin-left: auto;
  color: var(--muted);
  font-size: 11px;
}
.world-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.world-panel {
  min-width: 0;
}
.world-screen {
  position: relative;
  background: #eee9e0;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.world-screen video,
.world-screen > svg {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.world-panel-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-top: 10px;
  font-size: 12px;
}
.world-panel-label > span:last-child {
  color: var(--muted);
  font-size: 10px;
}
.model-select {
  border: 0;
  border-bottom: 1px solid var(--line);
  padding: 2px 18px 2px 0;
  color: var(--ink);
  font: inherit;
  background: transparent;
  max-width: 150px;
}
.scene-control {
  position: absolute;
  bottom: 6px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 50%;
  background: rgb(251 247 241 / 0.85);
  color: var(--ink);
  font-size: 18px;
  opacity: 0.6;
  transition:
    opacity 0.2s,
    transform 0.25s;
}
.scene-control:hover,
.scene-control:focus-visible {
  opacity: 1;
  transform: translateY(-2px);
}
.scene-left {
  left: 7px;
}
.scene-right {
  right: 7px;
}
.scene-reset {
  right: 47px;
  font-size: 15px;
}
.scene-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 11px;
  pointer-events: none;
}
.world-transport {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 0 12px;
}
.world-transport button {
  border: 0;
  background: transparent;
  padding: 8px 0;
  font-size: 12px;
  white-space: nowrap;
}
.world-play {
  min-width: 72px;
  text-align: left;
}
.world-seek {
  min-width: 30px;
  flex: 1;
  accent-color: var(--clay);
  height: 3px;
  cursor: pointer;
}
.world-time {
  font:
    10px ui-monospace,
    monospace;
  color: var(--muted);
  white-space: nowrap;
}
.world-modes {
  display: flex;
  gap: 14px;
  margin-left: 8px;
}
.world-modes button {
  color: var(--muted);
  position: relative;
}
.world-modes button[aria-pressed="true"] {
  color: var(--ink);
}
.world-modes button::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}
.world-modes button[aria-pressed="true"]::after {
  transform: scaleX(1);
}
.world-note,
.world-source {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.6;
}
.world-note {
  min-height: 35px;
  max-width: 620px;
}
.world-source {
  margin: 10px 0 26px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.world-download {
  color: var(--clay);
}
.create-environment {
  border-top: 1px solid var(--line);
}
.create-environment > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  padding: 24px 0;
  font-size: 16px;
}
.create-environment > summary::-webkit-details-marker {
  display: none;
}
.upload-plus {
  color: var(--clay);
  transition: transform 0.35s;
}
.create-environment[open] .upload-plus {
  transform: rotate(45deg);
}
.upload-content {
  padding: 4px 0 28px;
  animation: upload-reveal 0.45s ease both;
}
.upload-intro {
  font-size: 21px;
  letter-spacing: -0.03em;
}
.upload-guidance {
  margin-top: 12px;
  max-width: 530px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}
.video-drop {
  position: relative;
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  min-height: 176px;
  margin-top: 22px;
  border: 1px dashed #c4b6a7;
  background: #f3eee5;
  cursor: pointer;
  transition:
    background 0.25s,
    border-color 0.25s;
}
.video-drop:hover,
.video-drop.dragging,
.video-drop:focus-within {
  background: #eee6d9;
  border-color: var(--clay);
}
.video-drop svg {
  width: 105px;
  height: 56px;
  fill: none;
  stroke: var(--ink);
  stroke-width: 1.3;
}
.video-drop svg circle {
  fill: #d5a95c;
  stroke: none;
}
.video-drop > span {
  font-size: 13px;
  text-align: center;
  max-width: 90%;
  overflow-wrap: anywhere;
}
.video-drop .file-hint {
  font-size: 11px;
  color: var(--muted);
}
.video-drop input {
  position: absolute;
  inset: 0;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
}
#upload-preview {
  width: min(100%, 300px);
  max-height: 170px;
  margin: 16px auto 0;
  background: #eee9e0;
}
#upload-preview:not([hidden]) {
  display: block;
}
.upload-consent {
  display: flex;
  align-items: start;
  gap: 8px;
  margin: 20px 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}
.upload-consent input {
  margin-top: 2px;
  accent-color: var(--clay);
}
.upload-submit-row {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.generate-button {
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  padding: 12px 17px;
  font-size: 12px;
  transition: background 0.2s;
}
.generate-button:not(:disabled):hover {
  background: #163e3f;
}
.generate-button span {
  margin-left: 20px;
}
.upload-private {
  font-size: 10px;
  color: var(--muted);
}
.upload-status {
  font-size: 12px;
  line-height: 1.65;
  color: var(--muted);
  margin-top: 16px;
}
.upload-status[data-error="true"] {
  color: var(--clay);
}
.upload-progress {
  height: 2px;
  background: var(--line);
  margin-top: 12px;
  overflow: hidden;
}
.upload-progress span {
  display: block;
  width: 35%;
  height: 100%;
  background: var(--clay);
  animation: upload-wait 1.8s ease-in-out infinite alternate;
}
.page-hidden .upload-progress span {
  animation-play-state: paused;
}
.environment-lab [hidden] {
  display: none !important;
}
@keyframes upload-reveal {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
@keyframes upload-wait {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(290%);
  }
}
@media (max-width: 600px) {
  .lab-heading {
    display: block;
  }
  .lab-heading > a {
    display: inline-block;
    margin-top: 20px;
  }
  .world-pair {
    grid-template-columns: 1fr;
    gap: 22px;
  }
  .world-transport {
    flex-wrap: wrap;
    gap: 12px;
  }
  .world-modes {
    margin-left: auto;
  }
  .world-caption > span:last-child {
    display: none;
  }
  .world-seek {
    flex-basis: 40%;
  }
}
@media (prefers-reduced-motion: reduce) {
  .environment-lab *,
  .environment-lab *::after {
    animation: none !important;
    transition: none !important;
  }
  .upload-progress span {
    width: 100%;
    opacity: 0.5;
  }
}

.upload-access{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--weft-muted,#596562)}
.upload-access input{padding:9px 11px;border:1px solid var(--weft-border,#d8c9ba);border-radius:3px;background:#ffffff70;font:inherit;letter-spacing:.04em}