:root {
  --primary: #2563eb;
  --success: #059669;
  --danger: #dc2626;
  --bg: #f8fafc;
  --panel-bg: #ffffff;
  --border: #e2e8f0;
  --text-main: #1e293b;
  --text-sub: #64748b;
}

body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text-main); margin: 0; height: 100vh; display: flex; flex-direction: column; }

header { background: #1e293b; color: #fff; padding: 12px 20px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
header h1 { margin: 0; font-size: 1.25rem; font-weight: 600; display: flex; align-items: center; gap: 10px; }
header .version { font-size: 0.7rem; background: var(--primary); padding: 2px 6px; border-radius: 4px; text-transform: uppercase; }
header .note { margin: 4px 0 0; font-size: 0.8rem; color: #94a3b8; }

.layout { display: flex; flex: 1; overflow: hidden; gap: 20px; padding: 20px; max-width: 1800px; margin: 0 auto; width: 100%; }

/* 左侧控制面板 */
.panel { width: 360px; background: var(--panel-bg); padding: 20px; border-radius: 12px; border: 1px solid var(--border); display: flex; flex-direction: column; overflow-y: auto; box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05); flex-shrink: 0; }
.content { flex: 1; display: flex; flex-direction: column; gap: 16px; min-width: 0; overflow-y: auto; }

h2, h3 { margin: 0 0 12px 0; font-size: 0.95rem; font-weight: 600; color: var(--text-main); text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 2px solid #f1f5f9; padding-bottom: 8px; }
h3 { margin-top: 16px; font-size: 0.85rem; }

.form-group { margin-bottom: 12px; }
.form-row.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
label { display: block; font-size: 0.8rem; font-weight: 500; color: var(--text-sub); margin-bottom: 4px; }
input, select { width: 100%; padding: 8px 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 0.9rem; background: #fff; transition: all 0.2s; }
input:focus, select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1); }

.action-bar, .export-bar { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 12px; }
.action-bar button:first-child { grid-column: span 2; }

.btn { padding: 8px 16px; border: none; border-radius: 6px; font-size: 0.85rem; font-weight: 500; cursor: pointer; transition: 0.2s; display: flex; align-items: center; justify-content: center; gap: 6px; }
.btn.primary { background: var(--primary); color: white; }
.btn.primary:hover { background: #1d4ed8; }
.btn.secondary { background: #64748b; color: white; }
.btn.danger { background: #fee2e2; color: #991b1b; }
.btn.action { background: var(--success); color: white; width: 100%; }
.btn.outline { background: transparent; border: 1px solid var(--border); color: var(--text-sub); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.toggle-group { display: flex; flex-direction: column; gap: 6px; }
.toggle { display: flex; align-items: center; gap: 8px; font-weight: normal; cursor: pointer; }

/* 列表样式 */
.event-list { list-style: none; padding: 0; margin: 0; flex: 1; overflow-y: auto; border: 1px solid var(--border); border-radius: 6px; }
.event-list li { padding: 10px; border-bottom: 1px solid var(--border); background: #fff; display: flex; justify-content: space-between; align-items: center; font-size: 0.85rem; }
.event-list li:hover { background: #f8fafc; }
.event-list li.active { border-left: 3px solid var(--primary); background: #eff6ff; }
.event-detail strong { display: block; color: var(--text-main); }
.event-detail span { color: var(--text-sub); font-size: 0.75rem; }

/* 图表区 */
.chart-wrapper { background: #fff; border-radius: 12px; border: 1px solid var(--border); padding: 16px; flex: 2; min-height: 400px; position: relative; }
.metrics-panel { background: #fff; border-radius: 12px; border: 1px solid var(--border); padding: 16px; flex: 1; max-height: 250px; overflow-y: auto; }

table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
th { text-align: left; padding: 8px; color: var(--text-sub); border-bottom: 1px solid var(--border); font-weight: 600; }
td { padding: 8px; border-bottom: 1px solid #f1f5f9; }
td:nth-child(2) { font-family: monospace; font-weight: 700; color: var(--primary); }

.alert-box { padding: 12px; border-radius: 8px; font-size: 0.9rem; margin-bottom: 0; border: 1px solid transparent; animation: fadeIn 0.3s; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(-5px); } to { opacity: 1; transform: translateY(0); } }

.disclaimer { font-size: 0.75rem; color: #94a3b8; margin-top: auto; padding: 12px; background: #fff; border-radius: 8px; border: 1px dashed var(--border); line-height: 1.4; }

@media (max-width: 900px) {
  .layout { flex-direction: column; overflow-y: auto; }
  .panel { width: 100%; max-height: none; }
  .chart-wrapper { min-height: 300px; }
}