:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1c1f24;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #2563eb;
  --up: #0f9d58;    /* 正值 / 獲利：綠 */
  --down: #d93025;  /* 負值 / 虧損：紅 */
  --danger: #d93025;
  --tabbar-h: 56px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418; --card: #1a1e24; --text: #e6e8eb; --muted: #9aa3ae;
    --border: #2b313a; --accent: #5b8def; --up: #3ecf8e; --down: #ff6b5e; --danger: #ff6b5e;
  }
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 -apple-system, "PingFang TC", "Segoe UI", "Microsoft JhengHei", sans-serif;
  font-variant-numeric: tabular-nums;
  padding-bottom: calc(var(--tabbar-h) + env(safe-area-inset-bottom));
}
h2 { font-size: 17px; margin: 0; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.up { color: var(--up); }
.down { color: var(--down); }
[hidden] { display: none !important; }

/* ---------------------------------------------------------------- 頂部 */
.topbar {
  position: sticky; top: 0; z-index: 10; background: var(--card); border-bottom: 1px solid var(--border);
  padding: calc(8px + env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) 8px max(16px, env(safe-area-inset-left));
}
.topbar-row { display: flex; align-items: center; gap: 10px; }
.topbar h1 { font-size: 19px; margin: 0; flex: 1; }
.fx-pill { background: var(--bg); border: 1px solid var(--border); border-radius: 999px; padding: 2px 10px; font-size: 13px; white-space: nowrap; }
.icon-btn {
  width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--border); background: var(--bg);
  color: var(--accent); font-size: 19px; line-height: 1; cursor: pointer;
}
.icon-btn:disabled { opacity: .5; }
.icon-btn.spin { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
#updated { margin-top: 2px; }

main { max-width: 720px; margin: 0 auto; padding: 14px max(16px, env(safe-area-inset-right)) 24px max(16px, env(safe-area-inset-left)); }
.view { display: grid; gap: 14px; }

/* ---------------------------------------------------------------- 卡片 */
.card, .kpi, .holding, .trade { background: var(--card); border: 1px solid var(--border); border-radius: 14px; }
.card { padding: 14px 16px; display: grid; gap: 10px; min-width: 0; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 4px; }
.note { margin: 0; }
.empty { color: var(--muted); text-align: center; padding: 16px 0; margin: 0; }

.kpis { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.kpi { padding: 12px 14px; min-width: 0; }
.kpi.wide { grid-column: 1 / -1; }
.kpi .label { color: var(--muted); font-size: 12.5px; }
.kpi .value { font-size: 20px; font-weight: 650; margin-top: 2px; }
.kpi .value.big { font-size: 28px; }
.kpi .sub { color: var(--muted); font-size: 12.5px; min-height: 18px; }

/* ---------------------------------------------------------------- 持倉卡片 */
#holdings, #trades { display: grid; gap: 8px; }
.holding { padding: 12px 14px; cursor: pointer; }
.h-top, .h-mid { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.h-ticker { font-weight: 700; font-size: 17px; }
.h-shares { color: var(--muted); font-size: 13px; margin-left: 6px; font-weight: 400; }
.h-pct { font-weight: 700; font-size: 17px; }
.h-mid { margin-top: 4px; font-size: 13.5px; color: var(--muted); }
.h-mid b { font-weight: 600; }
.h-detail {
  display: none; grid-template-columns: 1fr 1fr; gap: 6px 14px; margin-top: 10px; padding-top: 10px;
  border-top: 1px dashed var(--border); font-size: 13.5px;
}
.holding.open .h-detail { display: grid; }
.h-detail div { display: flex; justify-content: space-between; gap: 8px; }
.h-detail span:first-child { color: var(--muted); }
.stale { color: var(--muted); font-size: 11px; font-weight: 400; }
.sort { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.sort select { width: auto; padding: 4px 28px 4px 10px; font-size: 14px; }

/* ---------------------------------------------------------------- 交易 */
.trade { padding: 10px 14px; display: grid; grid-template-columns: 1fr auto; gap: 2px 10px; }
.t-main { font-weight: 600; }
.t-sub { color: var(--muted); font-size: 13px; grid-column: 1; }
.t-amt { text-align: right; font-size: 14px; }
.t-actions { grid-column: 2; grid-row: 2 / span 2; display: flex; gap: 2px; justify-content: flex-end; align-items: end; }
.t-actions button { background: none; border: none; color: var(--accent); font: inherit; font-size: 14px; padding: 4px 6px; cursor: pointer; }
.t-actions button.del { color: var(--muted); }
.tag { font-size: 12px; padding: 1px 7px; border-radius: 6px; margin-right: 6px; font-weight: 500; }
.tag.buy { background: color-mix(in srgb, var(--up) 14%, transparent); color: var(--up); }
.tag.sell { background: color-mix(in srgb, var(--down) 14%, transparent); color: var(--down); }

form#trade-form { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 12px; }
form label { display: flex; flex-direction: column; gap: 4px; font-size: 12.5px; color: var(--muted); min-width: 0; }
.full { grid-column: 1 / -1; }
input, select {
  font: inherit; font-size: 16px; /* 16px 以上 iPhone 才不會自動放大畫面 */
  color: var(--text); background: var(--bg); border: 1px solid var(--border);
  border-radius: 10px; padding: 9px 11px; width: 100%; min-width: 0; -webkit-appearance: none; appearance: none;
}
input[type="date"] { min-height: 44px; }
select { background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 16px) 55%, calc(100% - 11px) 55%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 28px; }
input:focus, select:focus { outline: 2px solid color-mix(in srgb, var(--accent) 40%, transparent); border-color: var(--accent); }
.with-btn { display: flex; gap: 6px; }
.mini { font: inherit; font-size: 14px; border: 1px solid var(--border); background: var(--card); color: var(--accent); border-radius: 10px; padding: 0 12px; cursor: pointer; white-space: nowrap; }
.preview { color: var(--muted); font-size: 13px; min-height: 18px; }
.error { color: var(--danger); margin: 0; font-size: 13.5px; }
.error:empty { display: none; }
.filter { width: 150px; padding: 6px 10px; }
.check { display: flex; align-items: center; gap: 8px; font-size: 15px; }
.check input { width: 20px; height: 20px; -webkit-appearance: checkbox; appearance: auto; }

.btn {
  background: var(--accent); color: #fff; border: 1px solid var(--accent); border-radius: 10px;
  padding: 10px 16px; font: inherit; font-weight: 600; cursor: pointer; text-align: center;
}
.btn.ghost { background: transparent; color: var(--accent); }
.btn.danger { background: transparent; color: var(--danger); border-color: var(--danger); }
.btn:disabled { opacity: .6; }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; }
.link { background: none; border: none; color: var(--accent); font: inherit; font-size: 14px; cursor: pointer; padding: 0; }

/* ---------------------------------------------------------------- 圖表 */
.chart-box { position: relative; height: 260px; }
.chart-box.tall { height: 320px; }
.card p.small { margin: 0; }

/* ---------------------------------------------------------------- 底部分頁列 */
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20; display: flex;
  background: color-mix(in srgb, var(--card) 92%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--border); padding-bottom: env(safe-area-inset-bottom);
}
.tabbar button {
  flex: 1; height: var(--tabbar-h); background: none; border: none; color: var(--muted); font: inherit; font-size: 11px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; cursor: pointer;
}
.tabbar svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.tabbar button.active { color: var(--accent); }

#toast {
  position: fixed; left: 50%; bottom: calc(var(--tabbar-h) + env(safe-area-inset-bottom) + 16px); z-index: 30;
  transform: translateX(-50%) translateY(10px); opacity: 0; max-width: calc(100% - 32px);
  background: #1c1f24; color: #fff; padding: 10px 16px; border-radius: 10px; transition: .25s; pointer-events: none; font-size: 14px;
}
#toast.show { opacity: 1; transform: translateX(-50%); }