:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: #161f2e;
  --bg-hover: #1e293b;
  --bg-glass: rgba(22, 31, 46, 0.7);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --accent-light: #60a5fa;
  --accent-glow: rgba(59, 130, 246, 0.2);
  --up: #ef4444;
  --up-glow: rgba(239, 68, 68, 0.15);
  --down: #22c55e;
  --down-glow: rgba(34, 197, 94, 0.15);
  --border: #1e293b;
  --border-light: #334155;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

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

/* Header */
.header {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 15px rgba(59,130,246,0.3);
}

.nav {
  display: flex;
  gap: 6px;
}

.nav a {
  padding: 8px 18px;
  border-radius: 10px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
}

.nav a:hover { background: var(--bg-hover); color: var(--text-primary); }
.nav a.active { background: var(--accent); color: white; box-shadow: 0 2px 10px var(--accent-glow); }

.header-actions { display: flex; align-items: center; gap: 12px; }

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: rgba(34,197,94,0.1);
  border: 1px solid rgba(34,197,94,0.2);
  border-radius: 20px;
  font-size: 12px;
  color: var(--down);
}

.live-dot {
  width: 6px; height: 6px;
  background: var(--down);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Layout */
.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px;
}

/* Loading */
.loading-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
  color: var(--text-muted);
}

.spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 16px;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  transition: border-color 0.2s;
}

.card:hover { border-color: var(--border-light); }

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.card-title {
  font-size: 18px;
  font-weight: 600;
}

.card-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.stat-box::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), #8b5cf6);
  opacity: 0.6;
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.stat-value {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.stat-change {
  font-size: 13px;
  margin-top: 6px;
  font-weight: 500;
}

/* Table */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th {
  text-align: left;
  padding: 14px 16px;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  background: var(--bg-secondary);
}

th:hover { color: var(--text-secondary); }

th .sort-icon { margin-left: 4px; opacity: 0.4; font-size: 11px; }

td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tr { transition: background 0.15s; }
tr:hover td { background: var(--bg-hover); }

/* ETF Name Cell */
.etf-name-cell {
  display: flex;
  align-items: center;
  gap: 12px;
}

.etf-icon {
  width: 42px; height: 42px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
  color: white;
}

.etf-icon.wide { background: linear-gradient(135deg, #3b82f6, #1d4ed8); }
.etf-icon.sector { background: linear-gradient(135deg, #f59e0b, #d97706); }
.etf-icon.strategy { background: linear-gradient(135deg, #8b5cf6, #6d28d9); }
.etf-icon.commodity { background: linear-gradient(135deg, #eab308, #ca8a04); }
.etf-icon.bond { background: linear-gradient(135deg, #10b981, #059669); }
.etf-icon.overseas { background: linear-gradient(135deg, #ec4899, #db2777); }

.etf-info { min-width: 0; }
.etf-name { font-weight: 600; font-size: 14px; }
.etf-code { font-size: 12px; color: var(--text-muted); }

/* Tags */
.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  background: var(--bg-hover);
  color: var(--text-secondary);
}

/* Colors */
.up { color: var(--up); }
.down { color: var(--down); }

/* Trend indicator */
.trend-indicator {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
}

.trend-strong_up { background: var(--up-glow); color: #fca5a5; }
.trend-up { background: rgba(239,68,68,0.08); color: #f87171; }
.trend-neutral { background: rgba(148,163,184,0.08); color: #94a3b8; }
.trend-down { background: rgba(34,197,94,0.08); color: #4ade80; }
.trend-strong_down { background: var(--down-glow); color: #86efac; }

/* Rank */
.rank {
  width: 32px; height: 32px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
  font-weight: 700;
}

.rank-1 { background: linear-gradient(135deg, #fbbf24, #f59e0b); color: #1a1a1a; }
.rank-2 { background: linear-gradient(135deg, #e5e7eb, #9ca3af); color: #1a1a1a; }
.rank-3 { background: linear-gradient(135deg, #fdba74, #fb923c); color: #1a1a1a; }
.rank-other { background: var(--bg-hover); color: var(--text-secondary); }

/* Buttons */
.btn {
  padding: 8px 16px;
  border-radius: 10px;
  border: none;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #6366f1);
  color: white;
  box-shadow: 0 2px 10px var(--accent-glow);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 15px var(--accent-glow); }

.btn-sm { padding: 5px 12px; font-size: 12px; }

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-danger {
  background: rgba(239,68,68,0.1);
  color: #f87171;
  border: 1px solid rgba(239,68,68,0.15);
}
.btn-danger:hover { background: rgba(239,68,68,0.2); }

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 6px 12px;
}
.btn-ghost:hover { color: var(--text-primary); background: var(--bg-hover); }

/* Score Bar */
.score-bar-wrap {
  width: 80px;
  height: 6px;
  background: var(--bg-hover);
  border-radius: 3px;
  overflow: hidden;
}

.score-bar {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), #8b5cf6);
  transition: width 0.5s ease;
}

/* Filter */
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.filter-btn {
  padding: 6px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn:hover { border-color: var(--border-light); color: var(--text-primary); }
.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  box-shadow: 0 2px 8px var(--accent-glow);
}

/* Mini Chart */
.mini-chart {
  width: 110px;
  height: 40px;
}

/* Input */
input[type="number"], input[type="text"] {
  padding: 8px 12px;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13px;
  transition: border-color 0.2s;
}
input[type="number"]:focus, input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.empty-state-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.5; }

/* Progress */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-hover);
  border-radius: 4px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--accent), #8b5cf6);
  transition: width 0.3s ease;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 14px;
  z-index: 999;
  opacity: 0;
  transition: all 0.3s ease;
  box-shadow: var(--shadow);
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.active { display: flex; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 520px;
  max-height: 80vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-body {
  overflow-y: auto;
  flex: 1;
  padding: 16px 24px;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.modal-close:hover { background: var(--bg-hover); color: var(--text-primary); }

/* Search result item */
.search-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  margin-bottom: 8px;
  background: var(--bg-secondary);
  transition: all 0.15s;
}
.search-item:hover { border-color: var(--border-light); }

/* Chart container */
.chart-container {
  width: 100%;
  height: 420px;
  border-radius: var(--radius-sm);
}

/* Compare page */
.compare-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.compare-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.compare-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.compare-stat-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.compare-stat-row:last-child { border-bottom: none; }
.compare-stat-label { color: var(--text-secondary); }
.compare-stat-value { font-weight: 600; }

/* Kline page */
.kline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}

.kline-title-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

.kline-price {
  font-size: 36px;
  font-weight: 700;
}

.kline-change {
  font-size: 16px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 8px;
}

.kline-change.up { background: var(--up-glow); }
.kline-change.down { background: var(--down-glow); }

.kline-meta {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.kline-meta-item {
  font-size: 13px;
  color: var(--text-secondary);
}

.kline-meta-item strong {
  color: var(--text-primary);
  margin-left: 4px;
}

/* Period selector */
.period-bar {
  display: flex;
  gap: 4px;
  background: var(--bg-secondary);
  padding: 4px;
  border-radius: 10px;
}

.period-btn {
  padding: 6px 14px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.period-btn:hover { color: var(--text-primary); }
.period-btn.active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

/* Responsive */
@media (max-width: 768px) {
  .container { padding: 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .header-inner { height: 56px; }
  .logo { font-size: 16px; }
  .nav a { padding: 6px 12px; font-size: 13px; }
  .card { padding: 16px; }
  th, td { padding: 10px 12px; font-size: 13px; }
  .etf-icon { width: 36px; height: 36px; font-size: 11px; }
  .chart-container { height: 300px; }
  .kline-price { font-size: 28px; }
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeIn 0.4s ease forwards;
}

/* Link style */
.etf-link {
  color: inherit;
  text-decoration: none;
}
.etf-link:hover .etf-name {
  color: var(--accent-light);
}

/* Data source note */
.source-note {
  text-align: center;
  padding: 16px;
  font-size: 12px;
  color: var(--text-muted);
}