/* ── 底部导航栏 ── */
.tab-bar {
  display: flex;
  align-items: center;
  border-top: 1rpx solid rgba(255, 255, 255, 0.65);
  background: rgba(255, 255, 255, 0.90);
  padding: 10rpx 0 calc(10rpx + env(safe-area-inset-bottom));
  box-shadow: 0 -10rpx 24rpx rgba(110, 78, 131, 0.08);
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
}

/* ── Tab 项 ── */
.tab-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5rpx;
  border-radius: 22rpx;
  padding: 8rpx 0 6rpx;
  position: relative;
}

.tab-item.active {
  background: linear-gradient(180deg, rgba(255, 79, 145, 0.12), rgba(255, 225, 90, 0.08));
}

.tab-label {
  font-size: 20rpx;
  font-weight: 700;
  color: #9b8fa8;
  line-height: 1;
}

.tab-item.active .tab-label {
  color: #ff4f91;
  font-weight: 900;
}

/* ── 图标容器 ── */
.icon-wrap {
  width: 44rpx;
  height: 44rpx;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── 广场图标：2×2 圆角方块网格 ── */
.icon-grid {
  width: 34rpx;
  height: 34rpx;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 5rpx;
}

.icon-grid .sq {
  background: #9b8fa8;
  border-radius: 4rpx;
  transition: background 0.2s;
}

.tab-item.active .icon-grid .sq {
  background: #ff4f91;
}

/* ── 附近图标：地图 Pin ── */
.icon-pin {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.pin-head {
  width: 22rpx;
  height: 22rpx;
  border-radius: 50% 50% 50% 0;
  background: #9b8fa8;
  transform: rotate(-45deg);
  transition: background 0.2s;
}

.pin-tail {
  width: 4rpx;
  height: 8rpx;
  background: #9b8fa8;
  border-radius: 0 0 4rpx 4rpx;
  margin-top: -2rpx;
  transition: background 0.2s;
}

.tab-item.active .pin-head,
.tab-item.active .pin-tail {
  background: #ff4f91;
}

/* ── 汪友图标：双人轮廓 ── */
.icon-ppl {
  width: 36rpx;
  height: 30rpx;
  position: relative;
}

.ppl-head {
  position: absolute;
  width: 14rpx;
  height: 14rpx;
  border-radius: 50%;
  background: #9b8fa8;
  top: 0;
  transition: background 0.2s;
}

.ppl-head-l { left: 2rpx; }
.ppl-head-r { right: 2rpx; }

.ppl-body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 14rpx;
  background: #9b8fa8;
  border-radius: 8rpx 8rpx 0 0;
  transition: background 0.2s;
}

.tab-item.active .ppl-head,
.tab-item.active .ppl-body {
  background: #ff4f91;
}

/* ── 我的图标：单人轮廓 ── */
.icon-user {
  width: 28rpx;
  height: 34rpx;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4rpx;
}

.user-head {
  width: 18rpx;
  height: 18rpx;
  border-radius: 50%;
  background: #9b8fa8;
  transition: background 0.2s;
}

.user-body {
  width: 28rpx;
  height: 14rpx;
  border-radius: 8rpx 8rpx 0 0;
  background: #9b8fa8;
  transition: background 0.2s;
}

.tab-item.active .user-head,
.tab-item.active .user-body {
  background: #ff4f91;
}

/* ── 发布 FAB ── */
.tab-fab-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-bottom: 4rpx;
}

.tab-fab {
  width: 92rpx;
  height: 92rpx;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff4f91, #ff9f1c 55%, #ffe15a);
  border: 4rpx solid rgba(255, 255, 255, 0.90);
  box-shadow: 0 10rpx 22rpx rgba(255, 79, 145, 0.28);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 4rpx;
}

.fab-plus {
  font-size: 52rpx;
  color: #fff;
  font-weight: 300;
  line-height: 1;
  margin-top: -4rpx;
}

/* ── 未读角标 ── */
.badge {
  position: absolute;
  top: -4rpx;
  right: -6rpx;
  min-width: 30rpx;
  height: 30rpx;
  border-radius: 15rpx;
  background: #ff4f91;
  color: #fff;
  font-size: 18rpx;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 6rpx;
  border: 2rpx solid #fff;
}