/* Agent Card System v2 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #f5f5f7;
  --card: #fff;
  --text: #1d1d1f;
  --text2: #86868b;
  --accent: #0071e3;
  --accent2: #0077ed;
  --border: #d2d2d7;
  --green: #34c759;
  --red: #ff3b30;
  --orange: #ff9500;
  --gold: #f5a623;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.08);
}
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); line-height: 1.5; min-height: 100vh; }
a { color: var(--accent); text-decoration: none; }
button { cursor: pointer; font-family: inherit; border: none; outline: none; }
input, select, textarea { font-family: inherit; outline: none; }

/* ---------- Header ---------- */
.header { background: var(--card); border-bottom: 1px solid var(--border); padding: 0 24px; height: 56px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 100; }
.header h1 { font-size: 18px; font-weight: 600; }
.header-left { display: flex; align-items: center; gap: 24px; }
.header-nav { display: flex; gap: 16px; align-items: center; }
.header-nav a { color: var(--text2); font-size: 14px; padding: 6px 12px; border-radius: 6px; transition: all .2s; white-space: nowrap; }
.header-nav a:hover { color: var(--accent); background: rgba(0,113,227,.06); }
.header-nav a.active { color: var(--accent); font-weight: 500; }
.header-user { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--text2); flex-shrink: 0; }
.header-user .level { padding: 2px 8px; border-radius: 4px; font-size: 11px; font-weight: 500; white-space: nowrap; }
.level-初级代理 { background: #e8f5e9; color: #2e7d32; }
.level-高级代理 { background: #e3f2fd; color: #1565c0; }
.level-至尊代理 { background: #fff3e0; color: #e65100; }
.level-admin { background: #fce4ec; color: #c62828; }
.fs-badge { padding: 2px 8px; border-radius: 4px; background: linear-gradient(135deg, #f5a623, #f7c86e); color: #fff; font-weight: 600; font-size: 12px; white-space: nowrap; }
.logout-btn { background: none; color: var(--red); font-size: 13px; padding: 4px 8px; border-radius: 4px; white-space: nowrap; }
.logout-btn:hover { background: rgba(255,59,48,.08); }

/* ---------- Container ---------- */
.container { max-width: 960px; margin: 0 auto; padding: 24px; }

/* ---------- Card ---------- */
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; margin-bottom: 16px; }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 8px 20px; border-radius: 8px; font-size: 14px; font-weight: 500; transition: all .2s; white-space: nowrap; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent2); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }
.btn-outline { background: none; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg); }
.btn-sm { padding: 4px 12px; font-size: 12px; }
.btn-xs { padding: 3px 10px; font-size: 11px; border-radius: 6px; }
.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { opacity: .85; }
.btn-green { background: var(--green); color: #fff; }
.btn-green:hover { opacity: .85; }

/* ---------- Forms ---------- */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 4px; color: var(--text2); }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; transition: border-color .2s; background: #fff; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--accent); }

/* ---------- Login ---------- */
.login-wrap { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card { width: 360px; padding: 40px; }
.login-card h1 { text-align: center; margin-bottom: 8px; font-size: 24px; }
.login-card .subtitle { text-align: center; color: var(--text2); font-size: 13px; margin-bottom: 32px; }
.login-card .btn { width: 100%; padding: 12px; }
.error-msg { color: var(--red); font-size: 13px; margin-bottom: 8px; text-align: center; }

/* ---------- Category Header ---------- */
.cat-header { display: flex; align-items: center; gap: 8px; padding: 12px 16px; background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); margin: 16px 0 0; }
.cat-header:first-of-type { margin-top: 0; }
.cat-name { font-size: 15px; font-weight: 600; color: var(--text); }
.cat-count { font-size: 12px; color: var(--text2); background: var(--bg); padding: 2px 8px; border-radius: 10px; }

/* ---------- Product Grid ---------- */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; margin: 12px 0 0; }
.product-card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; display: flex; flex-direction: column; gap: 12px; transition: transform .2s, box-shadow .2s; }
.product-card:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,.12); }
.product-card .p-name { font-size: 16px; font-weight: 600; }
.product-card .p-meta { color: var(--text2); font-size: 13px; }
.product-card .p-prices { display: flex; flex-wrap: wrap; gap: 8px; }
.product-card .p-price-item { font-size: 12px; background: var(--bg); padding: 4px 10px; border-radius: 6px; color: var(--text2); }
.product-card .p-price-item.current { background: linear-gradient(135deg, #f5a623, #f7c86e); color: #fff; font-weight: 600; }
.product-card .p-stock { font-size: 12px; color: var(--text2); }
.product-card .p-stock.low { color: var(--orange); }
.product-card .btn { width: 100%; }

/* ---------- Sections ---------- */
.section-title { font-size: 20px; font-weight: 600; margin-bottom: 8px; }
.section-sub { color: var(--text2); font-size: 13px; margin-bottom: 20px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.btn-add-product { font-size: 13px; padding: 6px 16px; }

/* Category tabs (deprecated but kept for reference) */
.category-tabs { display: flex; gap: 8px; margin-bottom: 20px; }
.category-tab { padding: 6px 16px; border-radius: 20px; font-size: 13px; border: 1px solid var(--border); background: var(--card); color: var(--text2); transition: all .2s; cursor: pointer; }
.category-tab:hover { border-color: var(--accent); color: var(--accent); }
.category-tab.active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
th { font-weight: 500; color: var(--text2); font-size: 12px; }

/* ---------- Toast ---------- */
.toast { position: fixed; top: 20px; right: 20px; padding: 12px 20px; border-radius: 8px; font-size: 14px; z-index: 1000; animation: slideIn .3s ease; max-width: 90vw; }
.toast-success { background: #e8f5e9; color: #2e7d32; }
.toast-error { background: #ffebee; color: #c62828; }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ---------- States ---------- */
.loading { text-align: center; padding: 40px; color: var(--text2); }
.empty { text-align: center; padding: 60px 20px; color: var(--text2); font-size: 14px; }

/* ---------- Card Code Display ---------- */
.card-code { background: #f0f9eb; border: 1px solid #dcedc8; border-radius: 8px; padding: 12px; font-family: 'SF Mono', 'Fira Code', monospace; font-size: 14px; word-break: break-all; color: #33691e; }
.card-code-display { background: #f0f9eb; border: 1px solid #dcedc8; border-radius: 8px; padding: 16px; font-family: 'SF Mono', 'Fira Code', monospace; font-size: 16px; word-break: break-all; color: #33691e; text-align: center; letter-spacing: 1px; margin: 8px 0; }
.copied { background: var(--green) !important; }

/* ---------- Admin Links ---------- */
.admin-links { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.admin-link { padding: 20px; background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); transition: all .2s; display: block; }
.admin-link:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,.12); }
.admin-link .icon { font-size: 28px; margin-bottom: 8px; }
.admin-link .title { font-weight: 600; font-size: 15px; }
.admin-link .desc { color: var(--text2); font-size: 12px; margin-top: 4px; }

/* ---------- Modal ---------- */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.4); display: flex; align-items: center; justify-content: center; z-index: 200; }
.modal { background: var(--card); border-radius: var(--radius); padding: 24px; width: 420px; max-width: 90vw; max-height: 85vh; overflow-y: auto; }
.modal h3 { margin-bottom: 16px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }

/* ---------- Summary Grid ---------- */
.summary-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; margin-bottom: 20px; }
.summary-item { background: var(--card); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.summary-item .label { font-size: 12px; color: var(--text2); }
.summary-item .value { font-size: 24px; font-weight: 700; margin-top: 4px; }
.summary-item .value.fs { color: #f5a623; }

/* =============================================
   Mobile Responsive - 全面适配手机端
   ============================================= */
@media (max-width: 768px) {
  /* Header - 移动端堆叠布局 */
  .header {
    height: auto;
    flex-direction: column;
    padding: 10px 12px;
    gap: 8px;
  }
  .header-left {
    width: 100%;
    justify-content: space-between;
  }
  .header h1 { font-size: 15px; }
  .header-nav { gap: 4px; }
  .header-nav a { font-size: 12px; padding: 4px 8px; }
  .header-user {
    width: 100%;
    justify-content: space-between;
    font-size: 12px;
    gap: 8px;
    flex-wrap: wrap;
  }

  /* Container - 减少内边距 */
  .container { padding: 12px; max-width: 100%; }

  /* Product Grid - 单列 */
  .product-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .product-card { padding: 14px; gap: 8px; }

  /* Category Header */
  .cat-header { padding: 10px 12px; }
  .cat-name { font-size: 14px; }

  /* Tables - 横向滚动 */
  .card { padding: 12px; }
  table { font-size: 12px; }
  th, td { padding: 8px 6px; white-space: nowrap; }

  /* Section */
  .section-title { font-size: 17px; }
  .section-sub { flex-direction: column; align-items: flex-start; }

  /* Login */
  .login-card { width: 100%; max-width: 360px; padding: 28px 20px; margin: 0 12px; }
  .login-card h1 { font-size: 20px; }

  /* Admin Links */
  .admin-links { grid-template-columns: 1fr; }

  /* Summary Grid */
  .summary-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .summary-item { padding: 12px; }
  .summary-item .value { font-size: 20px; }

  /* Modal */
  .modal { width: 92vw; max-width: 420px; padding: 20px; border-radius: 12px; }
  .modal-actions { flex-direction: column; gap: 6px; }
  .modal-actions .btn { width: 100%; }

  /* Buttons */
  .btn { font-size: 13px; padding: 8px 16px; }

  /* Toast */
  .toast { left: 12px; right: 12px; top: auto; bottom: 20px; text-align: center; font-size: 13px; }

  /* Form inputs - 移动端避免缩放 */
  .form-group input, .form-group select, .form-group textarea { font-size: 16px; }
  .form-group label { font-size: 14px; }
}

@media (max-width: 480px) {
  .header-nav { gap: 2px; }
  .header-nav a { font-size: 11px; padding: 3px 6px; }
  .header h1 { font-size: 14px; }

  .summary-grid { grid-template-columns: 1fr 1fr; }

  .product-card .p-prices { gap: 4px; }
  .product-card .p-price-item { font-size: 11px; padding: 3px 7px; }

  .btn-sm { padding: 3px 8px; font-size: 11px; }
}