:root {
  --bg: #0f1419;
  --panel: #1a2029;
  --line: #2b333f;
  --text: #e6e9ee;
  --muted: #8b95a3;
  --accent: #4ea1ff;
  --pos: #ff5c5c;   /* 台股紅漲：買超用紅 */
  --neg: #29b765;   /* 賣超用綠 */
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, "Microsoft JhengHei", "PingFang TC", sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-text-size-adjust: 100%;
  /* App 式版面:標題+篩選列固定於上,表格區自行內部捲動 */
  display: flex; flex-direction: column;
  height: 100vh; height: 100dvh;
}
header { padding: 18px 16px 6px; flex: 0 0 auto; }
h1 { margin: 0; font-size: 1.25rem; }
.sub { margin: 6px 0 0; color: var(--muted); font-size: .82rem; line-height: 1.5; }

.controls {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
  padding: 12px 16px; background: var(--panel);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  flex: 0 0 auto;
}
.controls label { font-size: .85rem; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.controls select {
  background: var(--bg); color: var(--text); border: 1px solid var(--line);
  border-radius: 6px; padding: 4px 8px; font-size: .9rem;
}
.chk { color: var(--text) !important; }
.market-group { display: flex; gap: 14px; }
.count { margin-left: auto; color: var(--accent); font-weight: 600; font-size: .9rem; }

main { padding: 0 8px; flex: 1 1 auto; min-height: 0; display: flex; flex-direction: column; }
/* 表格自己的捲動容器(雙向);thead 在此容器內 sticky 才會正常釘住 */
.table-wrap { flex: 1 1 auto; min-height: 0; overflow: auto; }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th, td { padding: 9px 8px; text-align: right; white-space: nowrap; border-bottom: 1px solid var(--line); }
th:nth-child(-n+3), td:nth-child(-n+3) { text-align: left; }
thead th {
  position: sticky; top: 0; z-index: 4;
  background: var(--panel); cursor: pointer;
  user-select: none; color: var(--muted); font-weight: 600;
}
thead th:hover { color: var(--text); }
th .arrow { font-size: .7rem; opacity: .7; }
tbody tr { cursor: pointer; }
tbody tr:hover { background: #222b37; }
.code { color: var(--accent); font-weight: 600; }
.tag { font-size: .72rem; padding: 1px 6px; border-radius: 4px; border: 1px solid var(--line); color: var(--muted); }
.pos { color: var(--pos); }
.neg { color: var(--neg); }
.daily { font-size: .72rem; color: var(--muted); letter-spacing: .5px; }
.empty { text-align: center; color: var(--muted); padding: 40px 16px; }

footer { padding: 12px 16px; color: var(--muted); font-size: .78rem; line-height: 1.6; border-top: 1px solid var(--line); flex: 0 0 auto; }
footer strong { color: var(--text); }
.disc { color: #6b7280; }

@media (max-width: 560px) {
  .daily { display: none; }            /* 手機隱藏每日明細欄,改用點列查看 */
  th, td { padding: 8px 6px; font-size: .82rem; }
  .count { width: 100%; margin: 4px 0 0; }
}