/* ==================== 基础样式 ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-panel: #1e293b;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --border: #334155;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --up: #22c55e;
  --down: #ef4444;
  --warning: #f59e0b;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(0, 0, 0, .3);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 13px;
  line-height: 1.5;
  min-height: 100vh;
}

/* ==================== 顶部状态栏 ==================== */
#topbar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 10px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.logo {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.badge {
  background: var(--accent);
  color: #fff;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
  vertical-align: middle;
  margin-left: 6px;
}

.status-bar {
  display: flex;
  gap: 20px;
  color: var(--text-muted);
  font-size: 13px;
}

.status-bar b {
  color: var(--text);
  font-weight: 600;
}

/* ==================== Dashboard 容器 ==================== */
.dashboard {
  padding: 16px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ==================== 两列布局行 ==================== */
.row-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* ==================== 面板 ==================== */
.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel h2 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.panel h2 small {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
}

.refresh-note {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
  margin-left: auto;
}

/* ==================== 表格 ==================== */
.table-wrap {
  overflow-x: auto;
  max-height: 480px;
  overflow-y: auto;
}

.table-wrap::-webkit-scrollbar {
  width: 4px;
}

.table-wrap::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead {
  position: sticky;
  top: 0;
  z-index: 2;
}

th {
  background: rgba(15, 23, 42, .95);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 6px 10px;
  border-bottom: 1px solid rgba(51, 65, 85, .4);
  color: var(--text);
  font-size: 12px;
  white-space: nowrap;
}

tr:hover td {
  background: rgba(59, 130, 246, .06);
}

.empty {
  text-align: center;
  color: var(--text-muted) !important;
  padding: 30px !important;
  font-style: italic;
}

.up { color: var(--up); font-weight: 600; }
.down { color: var(--down); font-weight: 600; }

.big-change {
  font-size: 13px;
}

/* ==================== 按钮 ==================== */
.symbol-btn {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-weight: 600;
  font-size: 12px;
  padding: 2px 4px;
  border-radius: 3px;
  transition: background .15s;
}

.symbol-btn:hover {
  background: rgba(59, 130, 246, .15);
  text-decoration: underline;
}

.delete-btn {
  background: none;
  border: 1px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 13px;
  padding: 2px 6px;
  border-radius: 4px;
  transition: all .15s;
  line-height: 1;
}

.delete-btn:hover {
  color: var(--down);
  border-color: var(--down);
  background: rgba(239, 68, 68, .1);
}

/* ==================== K线图控制 ==================== */
.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.chart-header h2 {
  margin-bottom: 0;
}

.chart-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.chart-controls select {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 12px;
  cursor: pointer;
}

.interval-btn {
  background: var(--bg);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 11px;
  cursor: pointer;
  transition: all .15s;
}

.interval-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}

.interval-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

#chart-container {
  width: 100%;
  height: 380px;
}

#rate-chart-container {
  width: 100%;
  height: 260px;
}

#rate-chart-symbol {
  color: var(--warning);
  font-size: 12px;
  font-weight: 600;
}

#kline-symbol-label {
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
}

/* ==================== Toast ==================== */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 13px;
  opacity: 0;
  transition: opacity .3s;
  z-index: 9999;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
}

.toast.success { border-color: var(--up); }
.toast.error { border-color: var(--down); }
.toast.info { border-color: var(--accent); }

/* ==================== 爆仓数据面板 ==================== */
#liquidation-table th {
  font-size: 10px;
  padding: 6px 8px;
}

#liquidation-table td {
  padding: 5px 8px;
  font-size: 11px;
}

.liq-long {
  color: var(--down);
  font-weight: 600;
}

.liq-short {
  color: var(--up);
  font-weight: 600;
}

/* ==================== 响应式 ==================== */
@media (max-width: 1200px) {
  .row-split {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  #topbar {
    flex-direction: column;
    gap: 8px;
  }
  .status-bar {
    flex-wrap: wrap;
    justify-content: center;
  }
  .dashboard {
    padding: 12px;
  }
}