/* ============================================================
 * 会员中心页面样式（适配深色/浅色主题，使用 CSS 变量）
 * ============================================================ */
.membership-page { max-width: 1200px; margin: 0 auto; padding: 20px; }

/* 顶部横幅 */
.membership-banner {
  display: flex; justify-content: space-between; align-items: center;
  padding: 24px 32px; border-radius: 12px; margin-bottom: 20px;
  background: linear-gradient(135deg, var(--glow-primary), var(--glow-secondary));
  border: 1px solid var(--border);
}
.banner-left { display: flex; align-items: center; gap: 24px; }
.banner-plan-tag {
  color: #fff; padding: 6px 16px; border-radius: 20px;
  font-size: 14px; font-weight: 600;
}
.banner-points { display: flex; flex-direction: column; }
.points-num { font-size: 32px; font-weight: 700; color: var(--text-0); }
.points-label { font-size: 13px; color: var(--text-2); }

/* Tab导航 */
.membership-tabs {
  display: flex; gap: 4px; background: var(--bg-2); padding: 6px;
  border-radius: 10px; margin-bottom: 20px; overflow-x: auto;
  border: 1px solid var(--border);
}
.tab-item {
  display: flex; align-items: center; gap: 6px; padding: 10px 18px;
  border-radius: 8px; cursor: pointer; font-size: 14px; color: var(--text-2);
  white-space: nowrap; transition: all 0.2s;
}
.tab-item:hover { background: var(--bg-3); color: var(--text-1); }
.tab-item.active { background: var(--bg-1); color: var(--text-0); font-weight: 600; box-shadow: 0 1px 3px rgba(0,0,0,0.2); }
.tab-icon { font-size: 16px; }

/* 通用卡片 */
.info-card {
  background: var(--bg-1); border-radius: 10px; border: 1px solid var(--border);
  overflow: hidden; display: flex; flex-direction: column;
}
.card-title {
  padding: 14px 18px; font-size: 14px; font-weight: 600;
  color: var(--text-1); border-bottom: 1px solid var(--border);
}
.card-body { padding: 16px 18px; flex: 1; }
.card-footer {
  padding: 12px 18px; border-top: 1px solid var(--border);
  display: flex; justify-content: flex-end;
}
.info-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 6px 0; font-size: 13px;
}
.info-label { color: var(--text-2); }
.info-value { color: var(--text-0); font-weight: 500; }
.text-success { color: var(--success) !important; }
.text-warning { color: var(--warning) !important; }
.text-danger { color: var(--danger) !important; }

/* 概览网格 */
.overview-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px; margin-bottom: 24px;
}
.points-display { text-align: center; padding: 8px 0 16px; }
.points-big { font-size: 36px; font-weight: 700; color: var(--text-0); }
.points-unit { font-size: 14px; color: var(--text-2); margin-left: 4px; }

/* 用量进度条 */
.usage-bar-wrap { margin-bottom: 12px; }
.usage-bar { height: 8px; background: var(--bg-3); border-radius: 4px; overflow: hidden; }
.usage-fill { height: 100%; border-radius: 4px; transition: width 0.3s; }
.usage-text { text-align: center; font-size: 13px; color: var(--text-2); margin-top: 6px; }

/* 签到 */
.checkin-display { text-align: center; padding: 8px 0 16px; }
.checkin-days { font-size: 36px; font-weight: 700; color: var(--warning); }
.checkin-label { font-size: 14px; color: var(--text-2); margin-left: 4px; }

/* 快捷操作 */
.quick-actions { margin-top: 8px; }
.section-title { font-size: 16px; font-weight: 600; color: var(--text-0); margin-bottom: 14px; }
.action-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}
.action-item {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 20px; background: var(--bg-1); border: 1px solid var(--border);
  border-radius: 10px; cursor: pointer; transition: all 0.2s;
  font-size: 13px; color: var(--text-1);
}
.action-item:hover { border-color: var(--accent); box-shadow: 0 4px 12px var(--glow-primary); transform: translateY(-2px); }
.action-icon { font-size: 28px; }

/* 订阅管理 */
.subscription-current {
  display: flex; align-items: center; gap: 24px; padding: 24px;
  background: var(--bg-1); border: 1px solid var(--border); border-radius: 10px;
  margin-bottom: 24px;
}
.sub-plan-badge {
  color: #fff; padding: 10px 24px; border-radius: 8px;
  font-size: 18px; font-weight: 700; white-space: nowrap;
}
.sub-details { display: flex; gap: 32px; flex: 1; flex-wrap: wrap; }
.sub-detail-item { display: flex; flex-direction: column; gap: 4px; }
.sub-label { font-size: 12px; color: var(--text-3); }
.sub-value { font-size: 15px; color: var(--text-0); font-weight: 500; }

/* 开关 */
.switch { position: relative; display: inline-block; width: 44px; height: 24px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--bg-3); transition: .3s; border-radius: 24px;
}
.slider:before {
  position: absolute; content: ""; height: 18px; width: 18px;
  left: 3px; bottom: 3px; background-color: var(--text-1); transition: .3s; border-radius: 50%;
}
input:checked + .slider { background-color: var(--success); }
input:checked + .slider:before { transform: translateX(20px); }

/* 权益对比表 */
.plan-comparison-section { margin-bottom: 24px; }
.plan-table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; }
.plan-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.plan-table th, .plan-table td { padding: 12px 16px; text-align: center; border-bottom: 1px solid var(--border); }
.plan-table thead th { background: var(--bg-2); font-weight: 600; color: var(--text-1); }
.plan-feature-col { text-align: left !important; font-weight: 500; color: var(--text-2); min-width: 140px; }
.plan-col.current-plan { background: var(--glow-primary) !important; }
.plan-name { font-size: 14px; font-weight: 600; color: var(--text-0); }
.plan-price { font-size: 13px; color: var(--text-2); margin-top: 2px; }
.plan-current-tag {
  display: inline-block; margin-top: 6px; padding: 2px 10px;
  background: var(--success); color: #fff; font-size: 11px; border-radius: 10px;
}
.check-icon { color: var(--success); font-weight: 700; font-size: 16px; }
.cross-icon { color: var(--text-4); font-size: 16px; }

/* 升级引导 */
.upgrade-cta {
  display: flex; justify-content: space-between; align-items: center;
  padding: 24px 32px; background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 12px; color: #fff;
}
.cta-text h3 { margin: 0 0 6px; font-size: 20px; }
.cta-text p { margin: 0; opacity: 0.9; font-size: 14px; }
.cta-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* 使用统计 */
.stats-overview {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px; margin-bottom: 24px;
}
.stat-card {
  background: var(--bg-1); border: 1px solid var(--border); border-radius: 10px;
  padding: 20px; text-align: center;
}
.stat-value { font-size: 28px; font-weight: 700; color: var(--text-0); }
.stat-label { font-size: 13px; color: var(--text-2); margin-top: 4px; }

.period-switch { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.period-label { font-size: 13px; color: var(--text-2); }
.period-btn {
  padding: 6px 14px; border: 1px solid var(--border); background: var(--bg-1);
  border-radius: 6px; cursor: pointer; font-size: 13px; color: var(--text-1);
}
.period-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.chart-section {
  background: var(--bg-1); border: 1px solid var(--border); border-radius: 10px;
  padding: 20px; margin-bottom: 20px;
}
.bar-chart {
  display: flex; align-items: flex-end; gap: 4px; height: 180px;
  padding-top: 10px; overflow-x: auto;
}
.bar-item { flex: 1; min-width: 24px; display: flex; flex-direction: column; align-items: center; height: 100%; justify-content: flex-end; }
.bar-fill { width: 100%; max-width: 28px; background: linear-gradient(180deg, var(--accent), var(--accent-2)); border-radius: 4px 4px 0 0; min-height: 2px; transition: height 0.3s; }
.bar-label { font-size: 10px; color: var(--text-3); margin-top: 6px; white-space: nowrap; }

.breakdown-list { display: flex; flex-direction: column; gap: 14px; }
.breakdown-header { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 6px; }
.breakdown-name { color: var(--text-1); font-weight: 500; }
.breakdown-value { color: var(--text-2); }
.breakdown-bar { height: 8px; background: var(--bg-3); border-radius: 4px; overflow: hidden; }
.breakdown-fill { height: 100%; border-radius: 4px; transition: width 0.3s; }

.text-trend-list { display: flex; flex-direction: column; gap: 10px; }
.trend-row { display: flex; align-items: center; gap: 12px; font-size: 13px; }
.trend-date { width: 50px; color: var(--text-2); }
.trend-bar-wrap { flex: 1; height: 16px; background: var(--bg-3); border-radius: 4px; overflow: hidden; }
.trend-bar { height: 100%; background: var(--success); border-radius: 4px; min-width: 2px; }
.trend-value { width: 120px; text-align: right; color: var(--text-2); font-size: 12px; }

/* 订单记录 */
.orders-list { display: flex; flex-direction: column; gap: 10px; }
.order-item {
  display: flex; align-items: center; gap: 16px; padding: 16px 20px;
  background: var(--bg-1); border: 1px solid var(--border); border-radius: 10px;
}
.order-icon {
  width: 40px; height: 40px; border-radius: 8px; display: flex;
  align-items: center; justify-content: center; font-size: 20px;
  background: var(--bg-2);
}
.order-icon.subscription { background: var(--glow-primary); }
.order-info { flex: 1; }
.order-title { font-size: 14px; font-weight: 500; color: var(--text-0); }
.order-meta { font-size: 12px; color: var(--text-3); margin-top: 2px; }
.order-amount { font-size: 16px; font-weight: 600; color: var(--text-0); }
.order-status {
  padding: 4px 12px; border-radius: 12px; font-size: 12px; font-weight: 500;
}
.status-active { background: rgba(16,185,129,0.15); color: var(--success); }
.status-paid { background: rgba(59,130,246,0.15); color: var(--info); }
.status-cancelled { background: rgba(239,68,68,0.15); color: var(--danger); }
.status-expired { background: var(--bg-3); color: var(--text-2); }
.status-pending { background: rgba(245,158,11,0.15); color: var(--warning); }
.status-revoked { background: rgba(239,68,68,0.15); color: var(--danger); }

/* 邀请奖励 */
.invite-code-card {
  background: var(--bg-1); border: 1px solid var(--border); border-radius: 10px;
  padding: 24px; text-align: center; margin-bottom: 20px;
}
.invite-title { font-size: 16px; font-weight: 600; color: var(--text-0); margin-bottom: 16px; }
.invite-code-display {
  display: flex; align-items: center; justify-content: center; gap: 16px;
  margin-bottom: 20px;
}
.invite-code-text {
  font-size: 24px; font-weight: 700; color: var(--accent);
  letter-spacing: 2px; font-family: monospace;
}
.invite-stats { display: flex; justify-content: center; gap: 48px; }
.invite-stat { display: flex; flex-direction: column; }

.invite-two-col {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
@media (max-width: 768px) { .invite-two-col { grid-template-columns: 1fr; } }
.invite-records, .invite-leaderboard {
  background: var(--bg-1); border: 1px solid var(--border); border-radius: 10px; padding: 20px;
}
.record-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 13px;
}
.record-item:last-child { border-bottom: none; }
.record-user { color: var(--text-1); }
.record-reward { color: var(--success); font-weight: 500; }
.record-date { color: var(--text-3); font-size: 12px; }

.leaderboard-item {
  display: flex; align-items: center; gap: 12px; padding: 10px 0;
  border-bottom: 1px solid var(--border); font-size: 13px;
}
.leaderboard-item:last-child { border-bottom: none; }
.lb-rank {
  width: 24px; height: 24px; border-radius: 50%; background: var(--bg-3);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600; color: var(--text-2);
}
.leaderboard-item.top-1 .lb-rank { background: var(--warning); color: #fff; }
.leaderboard-item.top-2 .lb-rank { background: var(--text-2); color: #fff; }
.leaderboard-item.top-3 .lb-rank { background: #cd7f32; color: #fff; }
.lb-user { flex: 1; color: var(--text-1); }
.lb-count { color: var(--text-2); font-weight: 500; }

/* API密钥 */
.section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.api-keys-hint { font-size: 12px; color: var(--text-3); margin-bottom: 16px; }
.api-keys-list { display: flex; flex-direction: column; gap: 10px; }
.api-key-item {
  display: flex; align-items: center; gap: 16px; padding: 16px 20px;
  background: var(--bg-1); border: 1px solid var(--border); border-radius: 10px;
}
.key-info { flex: 1; }
.key-name { font-size: 14px; font-weight: 600; color: var(--text-0); }
.key-value { font-size: 13px; color: var(--text-2); font-family: monospace; margin-top: 2px; }
.key-meta { font-size: 12px; color: var(--text-3); margin-top: 4px; }

.feature-locked {
  text-align: center; padding: 60px 20px; background: var(--bg-1);
  border: 1px solid var(--border); border-radius: 10px;
}
.locked-icon { font-size: 48px; margin-bottom: 16px; }
.feature-locked h3 { color: var(--text-0); margin: 0 0 8px; }
.feature-locked p { color: var(--text-2); margin: 0 0 20px; }

/* 帮助中心 */
.cs-card {
  background: var(--bg-1); border: 1px solid var(--border); border-radius: 10px;
  padding: 24px; margin-bottom: 24px;
}
.cs-tier-tag {
  display: inline-block; padding: 6px 16px; background: var(--accent);
  color: #fff; border-radius: 6px; font-size: 14px; font-weight: 600;
  margin-bottom: 16px;
}
.cs-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px; margin-bottom: 20px;
}
.cs-item { display: flex; flex-direction: column; gap: 4px; }
.cs-label { font-size: 12px; color: var(--text-3); }
.cs-value { font-size: 14px; color: var(--text-0); font-weight: 500; }
.cs-contact { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 16px; }
.contact-item { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-1); }
.contact-icon { font-size: 18px; }
.cs-features { display: flex; flex-wrap: wrap; gap: 8px; }
.cs-feature-tag {
  padding: 4px 12px; background: rgba(16,185,129,0.1); color: var(--success);
  border-radius: 12px; font-size: 12px;
}

/* FAQ */
.faq-list { display: flex; flex-direction: column; gap: 8px; }
.faq-item {
  background: var(--bg-1); border: 1px solid var(--border); border-radius: 8px;
  overflow: hidden; cursor: pointer;
}
.faq-q {
  display: flex; align-items: center; gap: 10px; padding: 14px 18px;
  font-size: 14px; font-weight: 500; color: var(--text-0);
}
.faq-icon {
  width: 22px; height: 22px; border-radius: 50%; background: var(--accent);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; flex-shrink: 0;
}
.faq-arrow { margin-left: auto; color: var(--text-3); font-size: 12px; transition: transform 0.2s; }
.faq-a {
  padding: 0 18px 16px 50px; font-size: 13px; color: var(--text-2);
  line-height: 1.7;
}

/* 通用按钮 */
.btn {
  padding: 8px 18px; border-radius: 6px; font-size: 14px; cursor: pointer;
  border: none; transition: all 0.2s; font-weight: 500;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-light); }
.btn-outline { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn-outline:hover { background: var(--glow-primary); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.9; }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-disabled { background: var(--bg-3); color: var(--text-3); cursor: not-allowed; }

.loading { text-align: center; padding: 40px; color: var(--text-3); }
.empty-state { text-align: center; padding: 40px; color: var(--text-3); font-size: 14px; }
.empty-state-small { text-align: center; padding: 20px; color: var(--text-3); font-size: 13px; }