:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel2: #1c2330;
  --border: #2d333b;
  --text: #e6edf3;
  --muted: #8b949e;
  --green: #26a69a;
  --red: #ef5350;
  --blue: #58a6ff;
  --accent: #f0b90b;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "IBM Plex Sans Thai", "Sarabun", "Segoe UI", system-ui, sans-serif;
  font-size: 14px;
}
#topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--border);
}
#topbar h1 { font-size: 18px; color: var(--accent); }
#topbar .sub { font-size: 12px; color: var(--muted); font-weight: normal; margin-left: 8px; }
#price-ticker { font-size: 13px; color: var(--muted); text-align: right; max-width: 55%; }
#price-ticker span { color: var(--text); font-weight: 600; }

#layout { display: flex; gap: 12px; padding: 12px; align-items: flex-start; }
#sidebar { width: 240px; flex-shrink: 0; display: flex; flex-direction: column; gap: 12px; }
#main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 12px; }

.panel {
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 12px;
}
.panel h3 { font-size: 13px; color: var(--muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: .5px; }
.panel label { display: block; margin: 5px 0; cursor: pointer; color: var(--text); }

select, input[type=number] {
  width: 100%; background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; padding: 7px 8px; margin: 4px 0;
}
#interval-btns { display: flex; flex-wrap: wrap; gap: 4px; margin: 4px 0; }
#interval-btns button {
  flex: 1; min-width: 42px; background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; padding: 6px 4px; cursor: pointer; font-size: 12px;
}
#interval-btns button.active { background: var(--accent); color: #0d1117; border-color: var(--accent); font-weight: 700; }
#side-btns { display: flex; gap: 4px; margin-bottom: 8px; }
#side-btns button { flex: 1; border: none; border-radius: 6px; padding: 9px 0; cursor: pointer; font-weight: 700; color: #fff; }
#side-btns .buy { background: var(--green); }
#side-btns .sell { background: var(--red); }
#side-btns button:not(.active) { opacity: .45; }
.row { margin: 6px 0; }
.row label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 2px; }
#place-order-btn {
  width: 100%; margin-top: 10px; padding: 10px 0; border: none; border-radius: 6px;
  background: var(--blue); color: #fff; font-weight: 700; cursor: pointer; font-size: 15px;
}
#place-order-btn:hover { filter: brightness(1.1); }
#order-msg { margin-top: 8px; font-size: 12px; min-height: 16px; }
#order-msg.ok { color: var(--green); }
#order-msg.err { color: var(--red); }

#chart-container {
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 10px;
}
#main-chart { width: 100%; height: 420px; }
#rsi-pane, #macd-pane { margin-top: 8px; border-top: 1px dashed var(--border); padding-top: 8px; }
.pane-label { font-size: 11px; color: var(--muted); margin-bottom: 4px; }
#rsi-chart { width: 100%; height: 110px; }
#macd-chart { width: 100%; height: 130px; }

#dashboard {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 12px;
}
.stat { display: flex; flex-direction: column; min-width: 130px; }
.stat-label { font-size: 11px; color: var(--muted); }
.stat-value { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-value.up { color: var(--green); }
.stat-value.down { color: var(--red); }
#reset-btn {
  margin-left: auto; background: transparent; color: var(--red);
  border: 1px solid var(--red); border-radius: 6px; padding: 8px 14px; cursor: pointer; font-size: 13px;
}
#reset-btn:hover { background: var(--red); color: #fff; }

#tables { display: flex; gap: 12px; flex-wrap: wrap; }
.table-panel { flex: 1; min-width: 320px; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 12px; }
.table-panel h3 { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
table { width: 100%; border-collapse: collapse; font-size: 12px; }
th, td { text-align: right; padding: 6px 8px; border-bottom: 1px solid var(--border); }
th:first-child, td:first-child { text-align: left; }
th { color: var(--muted); font-weight: 500; }
td.up { color: var(--green); }
td.down { color: var(--red); }

@media (max-width: 900px) {
  #layout { flex-direction: column; }
  #sidebar { width: 100%; flex-direction: row; flex-wrap: wrap; }
  #sidebar .panel { flex: 1; min-width: 220px; }
  #main-chart { height: 320px; }
}