* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --ok: #16a34a;
  --err: #dc2626;
  --radius: 12px;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

/* 导航 */
.navbar { background: var(--card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.nav-inner { max-width: 900px; margin: 0 auto; padding: 0 20px; height: 60px; display: flex; align-items: center; gap: 24px; }
.logo { font-weight: 700; font-size: 17px; color: var(--primary-dark); white-space: nowrap; }
.nav-tabs { display: flex; gap: 6px; flex: 1; }
.tab { border: none; background: none; padding: 8px 16px; border-radius: 8px; cursor: pointer; font-size: 15px; color: var(--muted); white-space: nowrap; }
.tab.active { background: #eef2ff; color: var(--primary-dark); font-weight: 600; }
.nav-right { display: flex; align-items: center; gap: 12px; }
.balance-badge { background: linear-gradient(135deg, #fef3c7, #fde68a); color: #92400e; padding: 4px 12px; border-radius: 20px; font-size: 13px; font-weight: 600; white-space: nowrap; }
.username { color: var(--muted); font-size: 14px; }
.btn-ghost { background: none; border: 1px solid var(--border); padding: 6px 14px; border-radius: 8px; cursor: pointer; font-size: 14px; color: var(--muted); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary-dark); }

.container { max-width: 900px; margin: 0 auto; padding: 24px 20px; }

/* 认证 */
.auth-card { max-width: 400px; margin: 60px auto; background: var(--card); padding: 36px; border-radius: 16px; box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
.auth-title { font-size: 24px; text-align: center; margin-bottom: 8px; }
.auth-sub { text-align: center; color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.auth-tabs { display: flex; gap: 8px; margin-bottom: 20px; }
.auth-tab { flex: 1; padding: 10px; border: none; background: var(--bg); border-radius: 8px; cursor: pointer; font-size: 15px; color: var(--muted); }
.auth-tab.active { background: var(--primary); color: #fff; font-weight: 600; }
.auth-form label { display: block; margin-bottom: 14px; font-size: 14px; color: var(--muted); }
.auth-form input { width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px; font-size: 15px; margin-top: 4px; outline: none; }
.auth-form input:focus { border-color: var(--primary); }
.btn-primary { background: var(--primary); color: #fff; border: none; padding: 12px 20px; border-radius: 8px; cursor: pointer; font-size: 15px; font-weight: 600; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-block { width: 100%; }
.btn-lg { padding: 14px; font-size: 16px; }
.form-error { color: var(--err); font-size: 13px; margin-top: 8px; }

/* 卡片 */
.card { background: var(--card); border-radius: var(--radius); padding: 24px; margin-bottom: 20px; box-shadow: 0 1px 3px rgba(0,0,0,0.04); }
.card-title { font-size: 18px; margin-bottom: 16px; color: var(--text); }

/* 上传区域 */
.upload-area { border: 2px dashed var(--border); border-radius: 12px; padding: 32px; text-align: center; cursor: pointer; transition: all 0.2s; margin-bottom: 16px; }
.upload-area:hover, .upload-area.dragover { border-color: var(--primary); background: #f5f3ff; }
.upload-icon { font-size: 40px; margin-bottom: 8px; }
.upload-text { font-size: 15px; color: var(--text); margin-bottom: 4px; }
.upload-hint { font-size: 12px; color: var(--muted); }
.parsed-result { background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: 8px; padding: 12px; margin-bottom: 16px; }
.parsed-label { font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.parsed-url { font-size: 13px; color: var(--ok); word-break: break-all; }
.form-label { display: block; margin-bottom: 14px; font-size: 14px; color: var(--muted); }
.form-label input { width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px; font-size: 15px; margin-top: 4px; outline: none; }
.form-label input:focus { border-color: var(--primary); }

/* 活码列表 */
.qrcode-list { display: flex; flex-direction: column; gap: 12px; }
.qr-item { display: flex; justify-content: space-between; align-items: flex-start; padding: 16px; border: 1px solid var(--border); border-radius: 10px; gap: 16px; }
.qr-item-main { flex: 1; min-width: 0; }
.qr-item-title { font-weight: 600; font-size: 15px; margin-bottom: 4px; }
.qr-item-url { font-size: 12px; color: var(--muted); word-break: break-all; margin-bottom: 8px; }
.qr-item-meta { display: flex; gap: 12px; font-size: 12px; color: var(--muted); flex-wrap: wrap; margin-bottom: 8px; }
.qr-item-link { display: flex; align-items: center; gap: 8px; }
.qr-item-link a { font-size: 13px; color: var(--primary); text-decoration: none; word-break: break-all; }
.btn-copy { background: var(--bg); border: 1px solid var(--border); padding: 3px 10px; border-radius: 6px; font-size: 12px; cursor: pointer; color: var(--muted); flex-shrink: 0; }
.qr-item-actions { display: flex; flex-direction: column; gap: 6px; flex-shrink: 0; }
.btn-toggle, .btn-delete { padding: 5px 12px; border-radius: 6px; font-size: 12px; cursor: pointer; border: 1px solid var(--border); background: var(--card); color: var(--muted); }
.btn-toggle.active { border-color: var(--err); color: var(--err); }
.btn-delete { border-color: #fecaca; color: var(--err); }
.empty { text-align: center; color: var(--muted); padding: 32px; font-size: 14px; }

/* 订单 */
.balance-summary { display: flex; gap: 16px; margin-bottom: 20px; }
.balance-item { flex: 1; background: linear-gradient(135deg, #f0fdf4, #dcfce7); padding: 16px; border-radius: 10px; text-align: center; }
.balance-label { font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.balance-value { font-size: 20px; font-weight: 700; color: var(--ok); }
.orders-list { display: flex; flex-direction: column; gap: 8px; }
.order-item { display: flex; align-items: center; gap: 12px; padding: 12px; border: 1px solid var(--border); border-radius: 8px; }
.order-main { flex: 1; min-width: 0; }
.order-title { font-size: 14px; font-weight: 500; }
.order-meta { font-size: 12px; color: var(--muted); }
.order-amount { font-weight: 600; font-size: 15px; color: var(--muted); }
.order-amount.paid { color: var(--ok); }
.order-status { font-size: 12px; padding: 2px 8px; border-radius: 4px; background: var(--bg); color: var(--muted); }
.order-status.paid { background: #dcfce7; color: var(--ok); }

/* 付费页 */
.pay-card { max-width: 400px; margin: 40px auto; background: var(--card); border-radius: 16px; padding: 32px; box-shadow: 0 4px 24px rgba(0,0,0,0.08); text-align: center; }
.pay-header { margin-bottom: 24px; }
.pay-icon { font-size: 48px; margin-bottom: 12px; }
.pay-header h2 { font-size: 20px; margin-bottom: 8px; }
.pay-desc { font-size: 14px; color: var(--muted); }
.pay-price { margin-bottom: 24px; }
.price-label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.price-value { font-size: 36px; font-weight: 700; color: var(--primary); }
.pay-status { margin-top: 16px; padding: 16px; background: #f0fdf4; border-radius: 10px; }
.pay-loading { font-size: 14px; color: var(--ok); margin-bottom: 10px; }
.pay-tip { font-size: 12px; color: var(--muted); margin-top: 16px; }
.pay-error { text-align: center; padding: 40px; color: var(--err); font-size: 16px; }

/* 二维码展示 */
.qr-display { max-width: 400px; margin: 40px auto; background: var(--card); border-radius: 16px; padding: 32px; box-shadow: 0 4px 24px rgba(0,0,0,0.08); text-align: center; }
.qr-success { font-size: 18px; color: var(--ok); font-weight: 600; margin-bottom: 16px; }
.qr-display h3 { margin-bottom: 16px; }
.qr-canvas-wrap { display: flex; justify-content: center; margin: 20px 0; }
.qr-canvas-wrap canvas { border: 1px solid var(--border); border-radius: 8px; padding: 8px; }
.qr-url { font-size: 12px; color: var(--muted); word-break: break-all; margin-bottom: 16px; }
.qr-warning { font-size: 13px; color: #d97706; background: #fffbeb; padding: 10px; border-radius: 8px; margin-bottom: 16px; }

@media (max-width: 640px) {
  .nav-inner { padding: 0 12px; gap: 8px; }
  .logo { font-size: 14px; }
  .tab { padding: 6px 10px; font-size: 13px; }
  .username { display: none; }
  .balance-badge { font-size: 12px; padding: 3px 8px; }
  .qr-item { flex-direction: column; }
  .qr-item-actions { flex-direction: row; }
}