/*!
 * 帧率计样式
 *
 * 放左下角。右下角是看板娘，避开。
 * 配色走主题变量，但数字本身用固定的 绿/黄/红 三档 ——
 * 这三档是判断流畅度的语义色，不该跟着主题色变。
 */

#fps-meter {
  position: fixed;
  left: 14px;
  bottom: 14px;
  z-index: 90;                 /* 低于看板娘(9999)和右下角按钮，不与它们争层级 */
  display: flex;
  align-items: baseline;
  gap: 3px;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--anzhiyu-card-bg, rgba(255, 255, 255, 0.92));
  color: var(--anzhiyu-fontcolor, #333);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.16);
  font-size: 12px;
  line-height: 1;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: opacity 0.2s ease, transform 0.2s ease, padding 0.2s ease;
}

#fps-meter:hover {
  transform: translateY(-1px);
}

#fps-meter .fm-num {
  font-size: 15px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  min-width: 22px;
  text-align: right;
  transition: color 0.2s ease;
}

#fps-meter .fm-unit {
  font-size: 10px;
  opacity: 0.55;
  letter-spacing: 0.4px;
}

#fps-meter .fm-detail {
  display: none;
  margin-left: 6px;
  padding-left: 8px;
  border-left: 1px solid var(--anzhiyu-gray-op, rgba(128, 128, 128, 0.24));
  font-size: 11px;
  opacity: 0.7;
  gap: 8px;
}

#fps-meter .fm-detail span {
  white-space: nowrap;
}

#fps-meter .fm-detail b {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

/* 展开态：显示平均和最低 */
#fps-meter:not(.is-min) .fm-detail {
  display: flex;
}

/* 收起态：只留一个小点，几乎不占地方但还能一眼看到大概 */
#fps-meter.is-min {
  padding: 4px 7px;
  opacity: 0.5;
}

#fps-meter.is-min .fm-unit,
#fps-meter.is-min .fm-detail {
  display: none;
}

#fps-meter.is-min:hover {
  opacity: 1;
}

/* 窄屏缩小一点，别挡内容 */
@media screen and (max-width: 768px) {
  #fps-meter {
    left: 8px;
    bottom: 8px;
    padding: 4px 8px;
  }
  #fps-meter .fm-num {
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  #fps-meter {
    transition: none;
  }
}