:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --border: #e5e9f2;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #1f2a44;
  --accent: #3b82f6;
  --pos: #16a34a;
  --neg: #dc2626;
  --pos-bg: #dcfce7;
  --neg-bg: #fee2e2;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "Microsoft JhengHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--primary);
  color: #fff;
}
.brand { color: #fff; text-decoration: none; font-weight: 700; font-size: 16px; }
.nav { display: flex; align-items: center; gap: 16px; }
.date-pill {
  background: rgba(255,255,255,.15);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 13px;
}
.dropdown { position: relative; color: #fff; }
.dropdown summary {
  cursor: pointer;
  list-style: none;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(255,255,255,.1);
}
.dropdown summary::-webkit-details-marker { display: none; }
.dropdown-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: #fff;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-width: 240px;
  max-height: 360px;
  overflow: auto;
  box-shadow: 0 8px 24px rgba(0,0,0,.08);
  padding: 6px 0;
  z-index: 10;
}
.dropdown-menu a {
  display: block;
  padding: 6px 12px;
  color: var(--text);
  text-decoration: none;
}
.dropdown-menu a:hover { background: var(--bg); }

.container { padding: 24px; max-width: 1400px; margin: 0 auto; }
.hero { margin-bottom: 16px; }
.hero h1 { margin: 0 0 4px; font-size: 22px; }
.hero small { color: var(--muted); font-weight: 400; }
.muted { color: var(--muted); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  margin-bottom: 16px;
  box-shadow: 0 1px 2px rgba(0,0,0,.03);
}
.card h2 { margin: 0 0 12px; font-size: 16px; }

.table-wrap { overflow-x: auto; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.data-table th, .data-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}
.data-table thead th {
  background: #f8fafc;
  font-weight: 600;
  position: sticky;
  top: 0;
}
.data-table tbody tr:hover { background: #f9fafb; }
.mono { font-variant-numeric: tabular-nums; font-family: ui-monospace, "Consolas", monospace; text-align: right; }
.small { font-size: 12px; }
.pos { color: var(--pos); }
.neg { color: var(--neg); }
.stock-link { color: var(--text); text-decoration: none; }
.stock-link:hover { color: var(--accent); }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; }
.badge-buy  { background: var(--pos-bg); color: var(--pos); }
.badge-sell { background: var(--neg-bg); color: var(--neg); }
.badge-new  { background: #dbeafe; color: #1d4ed8; }
.badge-exit { background: #fce7f3; color: #be185d; }
.badge-hold { background: #f3f4f6; color: #4b5563; }

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  padding: 24px 0 32px;
}
code { background: #f1f5f9; padding: 1px 6px; border-radius: 4px; }