/* ============================================
   计费面板样式 v2
   ============================================ */

.billing-overview {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.billing-card {
  padding: 20px;
  border-radius: var(--border-radius);
  background: linear-gradient(135deg, var(--primary-bg), rgba(0,206,201,0.08));
  border: 1px solid var(--primary-light);
  text-align: center;
}
.billing-card .billing-tokens {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  margin: 8px 0;
}
.billing-card .billing-label {
  font-size: 13px;
  color: var(--text-secondary);
}
.billing-details {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}
.billing-detail-item {
  text-align: center;
  padding: 12px;
  background: var(--bg-surface-hover);
  border-radius: var(--border-radius-sm);
}
.billing-detail-item .detail-value {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}
.billing-detail-item .detail-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}
.billing-log {
  max-height: 200px;
  overflow-y: auto;
}
.billing-log-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 10px;
  border-bottom: 1px solid var(--border-light);
  font-size: 12px;
}
.billing-log-item .log-action { color: var(--text-secondary); }
.billing-log-item .log-amount { font-weight: 600; }
.billing-log-item .log-amount.deduct { color: var(--danger); }
.billing-log-item .log-amount.recharge { color: var(--success); }
.billing-log-item .log-time { color: var(--text-muted); font-size: 11px; }
.recharge-form { padding: 16px; }
.recharge-amount-presets {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}
.recharge-preset-btn {
  padding: 10px;
  border-radius: var(--border-radius-sm);
  background: var(--bg-surface-hover);
  border: 1px solid var(--border-light);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.recharge-preset-btn:hover {
  border-color: var(--primary);
  background: var(--primary-bg);
}

/* 用户浮动栏 - 固定在左下角，不遮挡侧边栏 */
.user-bar-float {
  position: fixed;
  bottom: 10px;
  right: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  box-shadow: var(--shadow-md);
  z-index: 50;
  font-size: 12px;
}
.user-bar-name {
  color: var(--text-primary);
  font-weight: 600;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.user-bar-logout {
  padding: 2px 10px;
  border-radius: 10px;
  background: var(--bg-surface-hover);
  color: var(--text-muted);
  font-size: 11px;
  border: 1px solid var(--border-color);
}
.user-bar-logout:hover {
  color: var(--danger);
  border-color: var(--danger-light);
}
.user-bar-admin {
  padding: 2px 10px;
  border-radius: 10px;
  background: var(--primary-bg);
  color: var(--primary);
  font-size: 11px;
  border: 1px solid var(--primary-light);
  cursor: pointer;
}
.user-bar-admin:hover {
  background: var(--primary);
  color: white;
}