:root {
  --bg: #0f1419;
  --bg2: #1a222d;
  --bg3: #243040;
  --text: #e7eef7;
  --muted: #8b9bb0;
  --accent: #5b9cff;
  --accent2: #3dd6c6;
  --danger: #ff6b7a;
  --warn: #ffc14d;
  --ok: #6bcf7f;
  --border: #2c3a4d;
  --radius: 14px;
  --shadow: 0 8px 28px rgba(0,0,0,.35);
  font-family: "Segoe UI", "Noto Sans TC", "PingFang TC", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: radial-gradient(1200px 600px at 10% -10%, #1a2a44, transparent),
              radial-gradient(900px 500px at 100% 0%, #16352f, transparent), var(--bg);
  color: var(--text); min-height: 100vh;
}
.app { max-width: 1200px; margin: 0 auto; padding: 1.25rem 1.25rem 3rem; }
.top { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: flex-end; margin-bottom: 1.25rem; }
h1 { margin: 0; font-size: 1.65rem; letter-spacing: .02em; }
.accent { color: var(--accent2); }
.sub { margin: .35rem 0 0; color: var(--muted); font-size: .9rem; }
.tabs { display: flex; flex-wrap: wrap; gap: .4rem; }
.tabs button {
  background: var(--bg2); color: var(--muted); border: 1px solid var(--border);
  border-radius: 999px; padding: .45rem .9rem; cursor: pointer; font-size: .9rem;
}
.tabs button:hover { color: var(--text); border-color: var(--accent); }
.tabs button.active { background: linear-gradient(135deg, #2a4a7a, #1f6a62); color: #fff; border-color: transparent; }
.panel { display: none; }
.panel.active { display: block; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: .85rem; margin-bottom: 1rem; }
.stat {
  background: linear-gradient(160deg, var(--bg2), #15202b); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1rem; box-shadow: var(--shadow);
}
.stat .label { color: var(--muted); font-size: .8rem; }
.stat .value { font-size: 1.45rem; font-weight: 700; margin-top: .25rem; }
.stat .value.small { font-size: 1rem; }
.card {
  background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1rem 1.1rem; margin-bottom: 1rem; box-shadow: var(--shadow);
}
.card h2 { margin: 0 0 .85rem; font-size: 1.05rem; }
.grid-2 { display: grid; grid-template-columns: 1.2fr .8fr; gap: 1rem; }
@media (max-width: 900px) { .grid-2 { grid-template-columns: 1fr; } }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: .55rem .45rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; }
tr:hover td { background: rgba(91,156,255,.06); }
.num { font-variant-numeric: tabular-nums; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.pos { color: var(--ok); }
.neg { color: var(--danger); }
.event-list { list-style: none; margin: 0; padding: 0; max-height: 28rem; overflow: auto; }
.event-list li {
  padding: .65rem .5rem; border-bottom: 1px solid var(--border); font-size: .88rem;
  display: grid; gap: .15rem;
}
.badge {
  display: inline-block; font-size: .72rem; padding: .12rem .45rem; border-radius: 999px;
  background: var(--bg3); color: var(--text); margin-right: .35rem;
}
.badge.opened, .badge.new_obscure { background: #1e4d3a; color: #8dffb0; }
.badge.closed { background: #4d1e28; color: #ff9aa8; }
.badge.resized { background: #3a3a1e; color: #ffe08a; }
.badge.cash_change { background: #1e334d; color: #9ec5ff; }
.toolbar { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; margin-bottom: 1rem; }
.toolbar label { color: var(--muted); font-size: .9rem; display: flex; gap: .4rem; align-items: center; }
input[type="date"], input[type="text"], input:not([type]) {
  background: var(--bg3); border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: .4rem .6rem; font-size: .9rem;
}
.btn {
  background: var(--accent); color: #061018; border: none; border-radius: 8px;
  padding: .45rem 1rem; font-weight: 700; cursor: pointer;
}
.btn:hover { filter: brightness(1.08); }
.muted { color: var(--muted); }
.foot { margin-top: 1.5rem; color: var(--muted); font-size: .78rem; text-align: center; }

/* === mobile app shell === */
.mobile-tabs { display: none; }
.holding-cards { display: none; gap: .65rem; }
.holding-card {
  background: var(--bg3); border: 1px solid var(--border); border-radius: 12px;
  padding: .85rem 1rem; display: grid; gap: .35rem;
}
.holding-card .row { display: flex; justify-content: space-between; align-items: baseline; gap: .5rem; }
.holding-card .sym { font-size: 1.05rem; font-weight: 700; }
.holding-card .meta { color: var(--muted); font-size: .78rem; }
.holding-card .metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: .4rem; margin-top: .25rem; }
.holding-card .metrics div { text-align: center; }
.holding-card .metrics .k { color: var(--muted); font-size: .68rem; }
.holding-card .metrics .v { font-size: .95rem; font-weight: 650; font-variant-numeric: tabular-nums; }

@media (max-width: 720px), html.force-mobile {
  .app {
    padding: 0.85rem 0.85rem calc(4.75rem + env(safe-area-inset-bottom, 0px));
    max-width: 100%;
  }
  .top {
    flex-direction: column; align-items: stretch; gap: .65rem; margin-bottom: .85rem;
    position: sticky; top: 0; z-index: 20;
    background: rgba(15,20,25,.92); backdrop-filter: blur(10px);
    padding: .65rem 0 .5rem; margin-left: -.15rem; margin-right: -.15rem;
    padding-left: .15rem; padding-right: .15rem;
  }
  h1 { font-size: 1.25rem; }
  .sub { font-size: .78rem; }
  /* desktop tabs hide; bottom bar shows */
  .top .tabs { display: none; }
  .mobile-tabs {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
    background: rgba(18,24,32,.96); backdrop-filter: blur(14px);
    border-top: 1px solid var(--border);
    padding: .35rem 0.2rem calc(0.35rem + env(safe-area-inset-bottom, 0px));
    gap: 0;
  }
  .mobile-tabs button {
    appearance: none; border: none; background: transparent; color: var(--muted);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: .12rem; padding: .35rem 0.1rem; font-size: .62rem; font-weight: 600;
    min-height: 3.1rem; cursor: pointer; border-radius: 10px;
  }
  .mobile-tabs button .ico { font-size: 1rem; line-height: 1; opacity: .9; }
  .mobile-tabs button.active { color: var(--accent2); background: rgba(61,214,198,.08); }
  .cards { grid-template-columns: repeat(2, 1fr); gap: .55rem; }
  .stat { padding: .75rem .7rem; border-radius: 12px; }
  .stat .value { font-size: 1.2rem; }
  .stat .value.small { font-size: .82rem; word-break: break-all; }
  .card { padding: .85rem; border-radius: 12px; }
  .card h2 { font-size: .95rem; }
  .toolbar { gap: .5rem; }
  .toolbar label { width: 100%; }
  .toolbar input[type="date"], .toolbar input[type="text"] {
    flex: 1; width: 100%; min-height: 2.6rem; font-size: 1rem;
  }
  .btn { min-height: 2.6rem; padding: .55rem 1rem; font-size: .95rem; border-radius: 10px; }
  table { font-size: .82rem; }
  th, td { padding: .5rem .3rem; }
  /* Prefer cards over wide tables on phone */
  .desktop-table { display: none; }
  .holding-cards { display: grid; }
  .event-list { max-height: none; }
  canvas { max-height: 220px !important; }
}

@media (max-width: 380px), html.force-mobile.narrow {
  .cards { grid-template-columns: 1fr 1fr; }
  .mobile-tabs button { font-size: .55rem; }
  .holding-card .metrics { grid-template-columns: repeat(3, 1fr); }
}

html.force-mobile body {
  background: #05070a;
}
html.force-mobile .app {
  max-width: 390px;
  margin: 0 auto;
  min-height: 100vh;
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  box-shadow: 0 0 40px rgba(0,0,0,.45);
}
.chart-box { position: relative; height: 320px; width: 100%; }
.chart-box.tall { height: 420px; }
@media (max-width: 600px) {
  .chart-box { height: 220px; }
  .chart-box.tall { height: 380px; }
}