/* ═══════════ Reset & Base ═══════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --bg-card: #1c2128;
  --border: #30363d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent: #f78166;
  --accent-hover: #e06c55;
  --green: #3fb950;
  --green-bg: rgba(63, 185, 80, 0.15);
  --red: #f85149;
  --red-bg: rgba(248, 81, 73, 0.15);
  --gold: #d2991d;
  --gold-bg: rgba(210, 153, 29, 0.15);
  --blue: #58a6ff;
  --blue-bg: rgba(88, 166, 255, 0.15);
  --purple: #a371f7;
  --purple-bg: rgba(163, 113, 247, 0.15);
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --transition: 0.2s ease;
  --font-mono: "Cascadia Code", "Fira Code", "JetBrains Mono", Consolas, monospace;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* ═══════════ Scrollbar ═══════════ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ═══════════ Header ═══════════ */
.header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(12px);
}
.header-inner {
  max-width: 1600px; margin: 0 auto; padding: 12px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 18px; font-weight: 700; color: var(--text-primary);
}
.logo svg { flex-shrink: 0; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.auth-status { font-size: 13px; color: var(--text-secondary); }

/* ═══════════ Buttons ═══════════ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 8px 16px; border: 1px solid transparent; border-radius: var(--radius);
  font-size: 14px; font-weight: 500; cursor: pointer; transition: var(--transition);
  white-space: nowrap; text-decoration: none;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-outline { background: transparent; color: var(--text-secondary); border-color: var(--border); }
.btn-outline:hover { color: var(--text-primary); border-color: var(--text-muted); }
.btn-accent { background: var(--green); color: #fff; }
.btn-accent:hover { filter: brightness(1.1); }
.btn-danger { background: var(--red); color: #fff; }
.btn-sm { padding: 4px 12px; font-size: 12px; }
.btn-xs { padding: 2px 8px; font-size: 11px; }
.btn-block { width: 100%; }

/* ═══════════ Stats Bar ═══════════ */
.stats-bar {
  max-width: 1600px; margin: 0 auto; padding: 16px 24px;
  display: flex; gap: 16px; flex-wrap: wrap;
}
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 14px 20px;
  min-width: 140px; text-align: center;
}
.stat-value { font-size: 28px; font-weight: 800; font-family: var(--font-mono); color: var(--text-primary); }
.stat-label { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }
.stat-card.bargain { border-color: var(--gold); }
.stat-card.bargain .stat-value { color: var(--gold); }
.stat-platforms { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-left: auto; }
.stat-platform-tag {
  padding: 6px 14px; border-radius: 20px; font-size: 13px;
  background: var(--bg-tertiary); border: 1px solid var(--border);
}
.stat-platform-tag.jiaoyimao { border-color: var(--blue); color: var(--blue); }
.stat-platform-tag.panzhi { border-color: var(--purple); color: var(--purple); }
.stat-platform-tag.pangxie { border-color: var(--green); color: var(--green); }

/* ═══════════ Main Layout ═══════════ */
.main-container {
  max-width: 1600px; margin: 0 auto; padding: 0 24px 24px;
  display: grid; grid-template-columns: 260px 1fr; gap: 20px;
  align-items: start;
}

/* ═══════════ Filter Panel ═══════════ */
.filter-panel {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 16px;
  position: sticky; top: 80px;
}
.filter-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border);
}
.filter-header h3 { font-size: 15px; font-weight: 700; }
.filter-group { margin-bottom: 14px; }
.filter-group label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 6px; font-weight: 500; }
.filter-group select,
.filter-group input[type="text"],
.filter-group input[type="number"] {
  width: 100%; padding: 8px 10px; background: var(--bg-tertiary);
  border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text-primary); font-size: 13px;
  transition: var(--transition);
}
.filter-group select:focus,
.filter-group input:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px rgba(247, 129, 102, 0.2);
}
.range-inputs { display: flex; align-items: center; gap: 8px; }
.range-inputs input { flex: 1; }
.range-inputs span { color: var(--text-muted); }
.checkbox-label {
  display: flex !important; align-items: center; gap: 8px;
  cursor: pointer; font-size: 13px !important; color: var(--text-primary) !important;
}
.checkbox-label input[type="checkbox"] { width: auto; accent-color: var(--accent); }
.scrape-hint { font-size: 11px; color: var(--text-muted); margin-top: 8px; text-align: center; }

/* ═══════════ Toolbar ═══════════ */
.toolbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); margin-bottom: 12px;
  flex-wrap: wrap; gap: 8px;
}
.toolbar-left { font-size: 13px; color: var(--text-secondary); }
.toolbar-right { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.toolbar-right select {
  padding: 4px 8px; background: var(--bg-tertiary);
  border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text-primary); font-size: 12px;
}

/* ═══════════ Data Table ═══════════ */
.table-container {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: auto;
  max-height: calc(100vh - 280px);
}
.data-table {
  width: 100%; border-collapse: collapse; font-size: 13px;
}
.data-table thead {
  position: sticky; top: 0; z-index: 10;
}
.data-table th {
  background: var(--bg-tertiary); padding: 10px 10px;
  text-align: left; font-weight: 600; font-size: 12px;
  color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px;
  white-space: nowrap; border-bottom: 2px solid var(--border);
}
.data-table td {
  padding: 10px; border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.data-table tbody tr { transition: background var(--transition); }
.data-table tbody tr:hover { background: var(--bg-tertiary); }
.data-table tbody tr.bargain-row { background: var(--gold-bg); }
.data-table tbody tr.bargain-row:hover { background: rgba(210, 153, 29, 0.25); }
.col-num { text-align: right !important; font-family: var(--font-mono); }
.loading-cell { text-align: center !important; color: var(--text-muted); padding: 40px !important; }

.platform-badge {
  display: inline-block; padding: 2px 10px; border-radius: 12px;
  font-size: 11px; font-weight: 600;
}
.platform-badge.jiaoyimao { background: var(--blue-bg); color: var(--blue); }
.platform-badge.panzhi { background: var(--purple-bg); color: var(--purple); }
.platform-badge.pangxie { background: var(--green-bg); color: var(--green); }

.price-tag { font-weight: 700; font-family: var(--font-mono); color: var(--accent); }
.price-value { font-weight: 700; font-family: var(--font-mono); }

.ratio-badge {
  display: inline-block; padding: 2px 8px; border-radius: 6px;
  font-weight: 700; font-family: var(--font-mono); font-size: 12px;
}
.ratio-badge.bargain { background: var(--green-bg); color: var(--green); }
.ratio-badge.normal { background: var(--blue-bg); color: var(--blue); }
.ratio-badge.premium { background: var(--red-bg); color: var(--red); }

.seller-badge {
  display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 11px;
}
.seller-badge.merchant { background: var(--green-bg); color: var(--green); }
.seller-badge.personal { background: var(--blue-bg); color: var(--blue); }
.seller-badge.unknown { background: var(--bg-tertiary); color: var(--text-muted); }

.realname-badge {
  display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 11px;
}
.realname-badge.can { background: var(--green-bg); color: var(--green); }
.realname-badge.cannot { background: var(--red-bg); color: var(--red); }

.table-link { color: var(--blue); text-decoration: none; font-size: 12px; }
.table-link:hover { text-decoration: underline; }

.bargain-star { color: var(--gold); margin-left: 4px; }

/* ═══════════ Pagination ═══════════ */
.pagination {
  display: flex; align-items: center; justify-content: center;
  gap: 4px; padding: 16px 0;
}
.pagination button {
  min-width: 36px; height: 36px; padding: 0 8px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text-secondary);
  font-size: 13px; cursor: pointer; transition: var(--transition);
}
.pagination button:hover { border-color: var(--accent); color: var(--accent); }
.pagination button.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.pagination button:disabled { opacity: 0.3; cursor: not-allowed; }
.pagination .page-info { font-size: 12px; color: var(--text-muted); padding: 0 8px; }

/* ═══════════ Modals ═══════════ */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000; backdrop-filter: blur(4px);
}
.modal {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); width: 420px; max-width: 95vw;
  max-height: 85vh; overflow-y: auto; box-shadow: var(--shadow);
}
.modal-lg { width: 680px; }
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 16px; font-weight: 700; }
.modal-close {
  background: none; border: none; color: var(--text-secondary);
  font-size: 24px; cursor: pointer; padding: 0; line-height: 1;
}
.modal-close:hover { color: var(--text-primary); }
.modal-body { padding: 20px; }
.modal-footer { padding: 16px 20px; border-top: 1px solid var(--border); display: flex; gap: 10px; justify-content: flex-end; }

/* Tabs */
.tabs { display: flex; gap: 0; margin-bottom: 20px; border-bottom: 1px solid var(--border); }
.tab {
  padding: 10px 24px; background: none; border: none; border-bottom: 2px solid transparent;
  color: var(--text-secondary); font-size: 14px; cursor: pointer; transition: var(--transition);
}
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab:hover { color: var(--text-primary); }

/* Form */
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; }
.form-group input {
  width: 100%; padding: 10px 12px; background: var(--bg-tertiary);
  border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text-primary); font-size: 14px; transition: var(--transition);
}
.form-group input:focus { outline: none; border-color: var(--accent); }
.form-error { color: var(--red); font-size: 12px; margin-top: 8px; min-height: 18px; }

/* ═══════════ Detail View ═══════════ */
.detail-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.detail-item { padding: 12px; background: var(--bg-tertiary); border-radius: var(--radius); }
.detail-item .label { font-size: 11px; color: var(--text-secondary); text-transform: uppercase; }
.detail-item .value { font-size: 18px; font-weight: 700; margin-top: 4px; font-family: var(--font-mono); }
.detail-item.bargain-highlight { border: 1px solid var(--gold); }
.detail-full { grid-column: 1 / -1; }
.detail-comparison {
  grid-column: 1 / -1; padding: 16px;
  background: var(--bg-tertiary); border-radius: var(--radius);
  margin-top: 8px;
}
.comparison-bar {
  height: 36px; background: var(--bg-primary); border-radius: 6px;
  position: relative; overflow: hidden; margin: 8px 0;
}
.comparison-fill {
  height: 100%; background: var(--green); border-radius: 6px;
  display: flex; align-items: center; padding-left: 10px; font-size: 12px;
  color: #fff; font-weight: 600; transition: width 0.5s ease;
}

/* ═══════════ Toast ═══════════ */
.toast-container {
  position: fixed; top: 20px; right: 20px; z-index: 9999;
  display: flex; flex-direction: column; gap: 8px;
}
.toast {
  padding: 12px 20px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text-primary); font-size: 13px;
  box-shadow: var(--shadow); animation: slideIn 0.3s ease;
  max-width: 380px;
}
.toast.success { border-color: var(--green); }
.toast.error { border-color: var(--red); }
.toast.warning { border-color: var(--gold); }
@keyframes slideIn {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}

/* ═══════════ Responsive ═══════════ */
@media (max-width: 1200px) {
  .main-container { grid-template-columns: 1fr; }
  .filter-panel { position: static; display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
  .filter-header { grid-column: 1 / -1; }
}
@media (max-width: 768px) {
  .stats-bar { padding: 12px; }
  .stat-card { min-width: 100px; padding: 10px 14px; }
  .stat-value { font-size: 22px; }
  .header-inner { padding: 10px 12px; }
  .data-table { font-size: 11px; }
}