:root {
  --bg: #0d1117;
  --panel: #161b22;
  --card: #1c2129;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --buy: #3fb950;
  --sell: #f85149;
  --up: #3fb950;
  --down: #f85149;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.topbar h1 { margin: 0; font-size: 20px; }

.ticker {
  display: flex;
  align-items: baseline;
  gap: 16px;
  font-variant-numeric: tabular-nums;
}

.ticker-price { font-size: 24px; font-weight: 700; }
.ticker-change { font-size: 14px; }

.up { color: var(--up); }
.down { color: var(--down); }
.muted { color: var(--muted); }
.error { color: var(--sell); min-height: 1.2em; }

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.panel, .card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; }
.panel { padding: 24px; }
.card { padding: 18px; }

.hidden { display: none !important; }

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 760px) { .grid { grid-template-columns: 1fr; } }

.row { display: flex; gap: 10px; flex-wrap: wrap; margin: 10px 0; }
.stack { display: flex; flex-direction: column; gap: 10px; margin: 10px 0; }

.tabs { display: flex; gap: 8px; margin-bottom: 8px; }
.tab {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
}
.tab.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.candle-note { font-size: 12px; font-weight: 400; }

.ranking-tabs .tab { font-size: 12px; padding: 4px 10px; }

input {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 14px;
  flex: 1;
  min-width: 140px;
}

button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
button:hover { filter: brightness(1.1); }
button.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
button.buy { background: var(--buy); }
button.sell { background: var(--sell); }
button.buy.alt, button.sell.alt { opacity: .85; }

.orders-head { margin: 18px 0 4px; font-size: 15px; }
.orders-head .hint { font-size: 12px; font-weight: 400; }
.orders { margin-top: 8px; }
.orders .status-badge { font-size: 11px; padding: 2px 8px; border-radius: 10px; }
.orders .status-badge.OPEN { background: rgba(88,166,255,.15); color: var(--accent); }
.orders .status-badge.FILLED { background: rgba(63,185,80,.15); color: var(--up); }
.orders .status-badge.CANCELLED { background: rgba(139,148,158,.15); color: var(--muted); }
.orders .cancel-btn { background: transparent; border: 1px solid var(--border); color: var(--muted); font-size: 12px; padding: 2px 10px; }
.orders .cancel-btn:hover { color: var(--sell); border-color: var(--sell); }

.stats { display: flex; gap: 32px; margin: 12px 0; flex-wrap: wrap; }
.stats dt { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
.stats dd { margin: 4px 0 0; font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }

#chart { height: 340px; }

.ranking { margin: 0; padding-left: 20px; display: flex; flex-direction: column; gap: 6px; }
.ranking li { font-variant-numeric: tabular-nums; }
.ranking .you { color: var(--accent); font-weight: 700; }

.trades { width: 100%; border-collapse: collapse; font-size: 13px; }
.trades th, .trades td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); }
.trades .BUY { color: var(--up); }
.trades .SELL { color: var(--down); }