:root {
  --bg: #0d1117;
  --bg-2: #161b22;
  --bg-3: #1c2330;
  --border: #2d333b;
  --text: #e6edf3;
  --text-dim: #8b949e;
  --up: #f85149;
  --down: #3fb950;
  --flat: #8b949e;
  --gold: #d29922;
  --blue: #58a6ff;
  --shadow: 0 2px 12px rgba(0,0,0,.4);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

#app { max-width: 1200px; margin: 0 auto; padding: 16px; }

/* ---------- Topbar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; background: var(--bg-2); border: 1px solid var(--border);
  border-radius: 12px; margin-bottom: 16px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark { color: var(--up); font-size: 22px; }
.logo h1 { font-size: 20px; font-weight: 700; }
.tag { font-size: 11px; color: var(--gold); border: 1px solid var(--gold); padding: 2px 8px; border-radius: 20px; }
.clock { text-align: center; }
.clock .time { color: var(--blue); font-weight: 600; letter-spacing: 1px; }
.clock span { margin: 0 6px; }
.controls { display: flex; gap: 8px; }

/* ---------- Buttons ---------- */
.btn {
  background: var(--bg-3); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 16px; cursor: pointer; font-size: 13px;
  transition: all .15s;
}
.btn:hover { background: #273141; }
.btn.primary { background: var(--up); border-color: var(--up); color: #fff; font-weight: 600; }
.btn.primary:hover { background: #e0352d; }
.btn.danger { color: var(--up); }
.btn.danger:hover { background: rgba(248,81,73,.12); }

/* ---------- Account ---------- */
.account { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px; }
.acct-card { background: var(--bg-2); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; }
.acct-label { color: var(--text-dim); font-size: 12px; margin-bottom: 6px; }
.acct-value { font-size: 24px; font-weight: 700; font-variant-numeric: tabular-nums; }
.acct-sub { color: var(--text-dim); font-size: 12px; margin-top: 4px; }

/* ---------- Layout ---------- */
.layout { display: grid; grid-template-columns: 320px 1fr 300px; gap: 12px; margin-bottom: 16px; }
@media (max-width: 1100px) { .layout { grid-template-columns: 1fr; } }

.panel {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 12px;
  padding: 14px; margin-bottom: 16px;
}
.panel-title { font-size: 15px; font-weight: 600; margin-bottom: 12px; color: var(--text); }
.chart-info { font-size: 12px; color: var(--text-dim); font-weight: 400; margin-left: 8px; }

/* ---------- Market list ---------- */
.market-head, .pos-head {
  display: grid; color: var(--text-dim); font-size: 12px; padding: 6px 8px;
  border-bottom: 1px solid var(--border);
}
.market-head { grid-template-columns: 1.6fr .8fr .8fr .9fr; }
.pos-head { grid-template-columns: 1.4fr .8fr .8fr .8fr .9fr .9fr .9fr .7fr; }

.stock-list { max-height: 420px; overflow-y: auto; }
.stock-item {
  display: grid; grid-template-columns: 1.6fr .8fr .8fr .9fr;
  padding: 10px 8px; cursor: pointer; border-bottom: 1px solid var(--border); align-items: center;
  transition: background .12s;
}
.stock-item:hover { background: var(--bg-3); }
.stock-item.selected { background: rgba(88,166,255,.08); outline: 1px solid var(--blue); outline-offset: -1px; }
.stock-name { font-weight: 600; }
.stock-code { color: var(--text-dim); font-size: 11px; }
.stock-price { font-weight: 600; text-align: right; font-variant-numeric: tabular-nums; }
.stock-pct { text-align: right; font-weight: 600; }
.stock-amt { text-align: right; color: var(--text-dim); font-size: 12px; font-variant-numeric: tabular-nums; }

/* ---------- Chart ---------- */
.chart-panel canvas { width: 100%; height: auto; display: block; background: var(--bg); border-radius: 8px; }
.chart-legend { margin-top: 10px; font-size: 12px; color: var(--text-dim); }

/* ---------- Trade ---------- */
.trade-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.trade-info { display: flex; flex-direction: column; }
.trade-info .price { font-size: 20px; font-weight: 700; }
.trade-tabs { display: flex; gap: 6px; }
.tab { background: var(--bg-3); border: 1px solid var(--border); color: var(--text-dim); padding: 6px 14px; border-radius: 8px; cursor: pointer; font-size: 13px; }
.tab.active { background: var(--up); color: #fff; border-color: var(--up); }
.tab.active[data-mode="sell"] { background: var(--down); border-color: var(--down); }

.trade-form label { display: block; font-size: 12px; color: var(--text-dim); margin-bottom: 10px; }
.trade-form input {
  width: 100%; margin-top: 4px; background: var(--bg); border: 1px solid var(--border);
  color: var(--text); border-radius: 8px; padding: 8px 10px; font-size: 15px;
}
.trade-form input:focus { outline: none; border-color: var(--blue); }
.qty-quick { display: flex; gap: 6px; margin-bottom: 10px; }
.mini { flex: 1; background: var(--bg-3); border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 6px; cursor: pointer; font-size: 12px; }
.mini:hover { background: #273141; }
.fee-line { font-size: 12px; color: var(--text-dim); margin-bottom: 6px; }
.trade-msg { font-size: 12px; margin-top: 8px; min-height: 18px; }
.trade-msg.ok { color: var(--up); }
.trade-msg.bad { color: var(--up); }
.trade-msg.warn { color: var(--gold); }
#btnTrade { width: 100%; margin-top: 8px; padding: 10px; font-size: 15px; }

/* ---------- Positions ---------- */
.pos-list { max-height: 300px; overflow-y: auto; }
.pos-item {
  display: grid; grid-template-columns: 1.4fr .8fr .8fr .8fr .9fr .9fr .9fr .7fr;
  padding: 10px 8px; border-bottom: 1px solid var(--border); align-items: center; font-size: 13px;
}
.pos-item .pname { font-weight: 600; }
.pos-actions { display: flex; gap: 4px; }
.pos-actions button { font-size: 11px; padding: 4px 8px; }
.empty { color: var(--text-dim); text-align: center; padding: 20px; }

/* ---------- Log ---------- */
.trade-log { max-height: 220px; overflow-y: auto; font-size: 12px; font-family: "SF Mono", Consolas, monospace; }
.log-line { padding: 4px 6px; border-bottom: 1px solid var(--border); color: var(--text-dim); }
.log-line .buy { color: var(--up); }
.log-line .sell { color: var(--down); }

/* ---------- Footer ---------- */
.footer { display: flex; justify-content: space-between; padding: 12px 4px; color: var(--text-dim); font-size: 12px; }
.link { color: var(--blue); cursor: pointer; }
.link:hover { text-decoration: underline; }

/* ---------- Modal ---------- */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal.hidden { display: none; }
.modal-box { background: var(--bg-2); border: 1px solid var(--border); border-radius: 14px; padding: 28px; max-width: 380px; width: 90%; text-align: center; }
.modal-box h3 { margin-bottom: 12px; font-size: 20px; color: var(--gold); }
.modal-box p { color: var(--text-dim); margin-bottom: 20px; white-space: pre-line; }

/* scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-track { background: transparent; }