/* ===== 整体 ===== */
.page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background: var(--bg);
}

/* ===== 预览区（深色）===== */
.stage {
  position: relative;
  flex: 1;
  min-height: 0;
  background: linear-gradient(180deg, var(--panel) 0%, #14161b 100%);
}

.stage-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.stage-mask {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48rpx;
  box-sizing: border-box;
  text-align: center;
}

.empty-icon {
  font-size: 76rpx;
  margin-bottom: 22rpx;
}

.empty-title {
  font-size: 34rpx;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 14rpx;
}

.empty-title.error {
  color: #ff6b6b;
}

.empty-sub {
  font-size: 26rpx;
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.6;
}

.empty-tip {
  margin-top: 20rpx;
  font-size: 23rpx;
  color: rgba(255, 255, 255, 0.38);
  line-height: 1.6;
  max-width: 560rpx;
}

.stage-badge {
  position: absolute;
  left: 22rpx;
  top: 22rpx;
  padding: 8rpx 18rpx;
  border-radius: var(--r-pill);
  background: rgba(0, 0, 0, 0.34);
  color: rgba(255, 255, 255, 0.72);
  font-size: 22rpx;
}

/* ===== 控制面板（深色，和预览区统一）===== */
.sheet {
  background: var(--bg-2);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  padding: 30rpx 28rpx 28rpx;
  box-shadow: 0 -10rpx 36rpx rgba(0, 0, 0, 0.45);
}

.section {
  margin-bottom: 26rpx;
}

.section:last-child {
  margin-bottom: 0;
}

.section-title {
  font-size: 26rpx;
  color: rgba(255, 255, 255, 0.92);
  font-weight: 600;
  letter-spacing: 1rpx;
  margin-bottom: 14rpx;
}

/* ===== 选择文件按钮 ===== */
.pick-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100rpx;
  padding: 0;
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #ffffff;
  font-weight: 500;
  box-shadow: 0 10rpx 24rpx rgba(242, 53, 59, 0.28);
}

.pick-btn::after {
  border: none;
}

.pick-text {
  font-size: 31rpx;
  letter-spacing: 2rpx;
}

.pick-sub {
  margin-top: 16rpx;
  text-align: center;
  font-size: 22rpx;
  color: rgba(255, 255, 255, 0.38);
}

/* ===== 文件类型标签 ===== */
.chips {
  display: flex;
  flex-wrap: wrap;
  margin-top: 18rpx;
}

.chip {
  display: flex;
  align-items: center;
  margin: 0 12rpx 12rpx 0;
  padding: 8rpx 18rpx;
  border-radius: var(--r-pill);
  background: var(--panel-2);
}

.chip-dot {
  width: 12rpx;
  height: 12rpx;
  border-radius: 50%;
  background: var(--text-dim);
  margin-right: 10rpx;
  flex-shrink: 0;
}

.chip-name {
  font-size: 23rpx;
  color: rgba(255, 255, 255, 0.72);
}

.chip-skel .chip-dot {
  background: var(--accent);
}

.chip-atlas .chip-dot {
  background: #7c5cff;
}

.chip-img .chip-dot {
  background: #22c55e;
}

.chip-json .chip-dot {
  background: #f59e0b;
}

.missing {
  margin-top: 18rpx;
  padding: 14rpx 20rpx;
  border-radius: var(--r-lg);
  background: rgba(245, 158, 11, 0.1);
  font-size: 23rpx;
  color: #f0b45c;
}

.link {
  margin-top: 14rpx;
  font-size: 24rpx;
  color: rgba(255, 255, 255, 0.45);
}

.link.inline {
  margin-top: 0;
  margin-left: 18rpx;
  color: var(--cyan);
}

/* ===== 播放选择 ===== */
.select {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 86rpx;
  padding: 0 26rpx;
  margin-bottom: 14rpx;
  background: var(--panel-2);
  border-radius: var(--r-lg);
}

.select-label {
  font-size: 29rpx;
  font-weight: 500;
  color: #ffffff;
}

.select-arrow {
  font-size: 26rpx;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== 分段控件 ===== */
.segment {
  display: flex;
  padding: 6rpx;
  background: var(--panel-2);
  border-radius: var(--r-lg);
}

.seg {
  flex: 1;
  height: 68rpx;
  line-height: 68rpx;
  text-align: center;
  font-size: 25rpx;
  color: rgba(255, 255, 255, 0.55);
  border-radius: var(--r-md);
}

.seg.on {
  background: #3d262e;
  color: var(--cyan);
  font-weight: 600;
  box-shadow: 0 2rpx 10rpx rgba(0, 0, 0, 0.25);
}

/* ===== 参数行 ===== */
.param {
  display: flex;
  align-items: center;
  margin-bottom: 20rpx;
}

.param-name {
  width: 76rpx;
  flex-shrink: 0;
  font-size: 26rpx;
  color: rgba(255, 255, 255, 0.55);
}

.param-slider {
  flex: 1;
  margin: 0 16rpx;
}

.param-val {
  width: 76rpx;
  flex-shrink: 0;
  text-align: right;
  font-size: 25rpx;
  font-weight: 600;
  color: var(--cyan);
}

/* ===== 缩放步进器 ===== */
.stepper {
  display: flex;
  align-items: center;
  margin-left: 16rpx;
  background: var(--panel-2);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.step-btn {
  width: 70rpx;
  height: 64rpx;
  line-height: 64rpx;
  text-align: center;
  font-size: 32rpx;
  color: rgba(255, 255, 255, 0.75);
}

.step-btn:active {
  background: var(--panel-2);
}

.step-val {
  min-width: 104rpx;
  text-align: center;
  font-size: 25rpx;
  font-weight: 600;
  color: #ffffff;
}

.gesture-hint {
  margin-top: 4rpx;
  text-align: center;
  font-size: 22rpx;
  color: rgba(255, 255, 255, 0.3);
}