/* === 辅助类 === */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--primary); }
.text-muted { color: var(--muted); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-gold { color: var(--gold); }
.text-accent { color: var(--accent); }
.fw-600 { font-weight: 600; }
.fw-800 { font-weight: 800; }
.mt-0 { margin-top: 0; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.p-0 { padding: 0; }
.p-16 { padding: 16px; }
.p-24 { padding: 24px; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.d-flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-1 { flex: 1; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.w-full { width: 100%; }
.h-full { height: 100%; }
.overflow-hidden { overflow: hidden; }
.relative { position: relative; }
.cursor-pointer { cursor: pointer; }
.rounded { border-radius: var(--radius); }

/* === 页面标题 === */
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; flex-wrap: wrap; gap: 12px; }
.page-title { font-size: 1.4rem; color: #fff; font-weight: 700; }
.page-subtitle { font-size: 0.9rem; color: var(--muted); }

/* === 加载动画 === */
.loading { text-align: center; padding: 60px; color: var(--muted); }
.spinner { width: 40px; height: 40px; border: 3px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.8s linear infinite; margin: 0 auto 16px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* === 动画 === */
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes glow { 0%, 100% { box-shadow: 0 0 10px rgba(233,69,96,0.3); } 50% { box-shadow: 0 0 30px rgba(233,69,96,0.6); } }
.fade-in { animation: fadeIn 0.5s ease; }
.glow { animation: glow 2s ease infinite; }

/* === 分割线 === */
.divider { border: none; border-top: 1px solid var(--border); margin: 20px 0; }
.divider-gradient { border: none; height: 1px; background: linear-gradient(90deg, transparent, var(--primary), transparent); margin: 24px 0; }

/* === 空状态 === */
.empty-state { text-align: center; padding: 60px 20px; color: var(--muted); }
.empty-state .icon { font-size: 3rem; margin-bottom: 16px; opacity: 0.4; }
.empty-state p { margin-bottom: 20px; font-size: 0.95rem; }

/* === 用户下拉 === */
.user-menu { position: relative; display: flex; align-items: center; gap: 8px; cursor: pointer; }
.user-dropdown { display: none; position: absolute; top: calc(100% + 8px); right: 0; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); min-width: 180px; overflow: hidden; box-shadow: var(--shadow); z-index: 100; }
.user-menu:hover .user-dropdown { display: block; }
.user-dropdown a { display: flex; align-items: center; gap: 8px; padding: 12px 16px; color: var(--text); text-decoration: none; font-size: 0.9rem; transition: var(--transition); }
.user-dropdown a:hover { background: rgba(233,69,96,0.1); color: var(--primary); }
.user-dropdown hr { border: none; border-top: 1px solid var(--border); margin: 4px 0; }

/* === 订单卡片 === */
.order-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 12px; transition: var(--transition); }
.order-card:hover { border-color: var(--border-light); }
.order-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.order-no { font-size: 0.8rem; color: var(--muted); font-family: monospace; }
.order-game { font-weight: 600; color: #fff; margin-bottom: 4px; }
.order-meta { font-size: 0.85rem; color: var(--muted); }
.order-amount { font-size: 1.1rem; font-weight: 700; color: var(--primary); }

/* === 余额卡片 === */
.balance-card { background: linear-gradient(135deg, #1a0533, #0f2040, #1a0533); border: 1px solid var(--primary); border-radius: var(--radius); padding: 24px; position: relative; overflow: hidden; margin-bottom: 24px; }
.balance-card::after { content: ''; position: absolute; inset: 0; background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg fill='%23e94560' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"); }
.balance-label { color: rgba(255,255,255,0.6); font-size: 0.85rem; margin-bottom: 8px; }
.balance-amount { font-size: 2.5rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
.balance-amount small { font-size: 1rem; font-weight: normal; color: rgba(255,255,255,0.6); }
.balance-actions { display: flex; gap: 12px; }

/* === 充值卡片 === */
.recharge-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }
.recharge-item { background: var(--card2); border: 2px solid var(--border); border-radius: var(--radius); padding: 20px; text-align: center; cursor: pointer; transition: var(--transition); }
.recharge-item:hover { border-color: var(--primary); }
.recharge-item.selected { border-color: var(--primary); background: rgba(233,69,96,0.1); }
.recharge-item .amount { font-size: 1.4rem; font-weight: 800; color: var(--primary); }
.recharge-item .gift { font-size: 0.75rem; color: var(--success); margin-top: 4px; }

/* === 响应式 === */
@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-5 { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
    .navbar-nav { display: none; }
    .grid-2, .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .coach-stats { grid-template-columns: 1fr 1fr; }
    .search-bar { flex-direction: column; }
    .modal-box { padding: 20px; }
    .page-header { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
    .grid-2, .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; }
    .recharge-grid { grid-template-columns: repeat(2, 1fr); }
}