:root {
  --bg: #0e1117;
  --panel: #161b22;
  --panel-border: #262c36;
  --text: #e6e9ef;
  --text-dim: #8b95a5;
  --accent: #4f8cff;
  --green: #26a69a;
  --red: #ef5350;
  --amber: #d29922;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 14px;
}

a { color: var(--accent); }

/* --- Login --- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-box {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 32px;
  width: 320px;
}
.login-box h1 {
  font-size: 18px;
  margin: 0 0 20px;
  text-align: center;
}
.login-box input {
  width: 100%;
  padding: 10px;
  margin-bottom: 12px;
  background: var(--bg);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  color: var(--text);
}
.login-box button {
  width: 100%;
  padding: 10px;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  color: white;
  font-weight: 600;
  cursor: pointer;
}
.login-error {
  color: var(--red);
  font-size: 13px;
  text-align: center;
  margin-bottom: 12px;
}

/* --- Dashboard shell --- */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--panel-border);
  flex-wrap: wrap;
}
.topbar h1 {
  font-size: 16px;
  margin: 0;
  margin-right: 8px;
  white-space: nowrap;
}
.topbar select {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 6px 10px;
}
.topbar .spacer { flex: 1; }
.topbar button {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
}
.topbar button:hover { color: var(--text); }
#status-note { color: var(--text-dim); font-size: 12px; }

main {
  padding: 16px;
  max-width: 1400px;
  margin: 0 auto;
}

.chart-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}
@media (max-width: 900px) {
  .chart-grid { grid-template-columns: 1fr; }
}
.chart-panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 8px;
}
.chart-panel .chart-title {
  font-size: 12px;
  color: var(--text-dim);
  padding: 2px 6px 6px;
  display: flex;
  justify-content: space-between;
}
.chart-panel .chart-canvas { height: 280px; }

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 16px;
}
.panel h2 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--text-dim);
  margin: 0 0 10px;
}

.trade-summary {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.trade-summary .stat { min-width: 120px; }
.trade-summary .stat .label { color: var(--text-dim); font-size: 12px; }
.trade-summary .stat .value { font-size: 18px; font-weight: 600; }
.value.long { color: var(--green); }
.value.short { color: var(--red); }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--panel-border); }
th { color: var(--text-dim); font-weight: 500; }
.pnl-pos { color: var(--green); }
.pnl-neg { color: var(--red); }
.empty-note { color: var(--text-dim); padding: 8px 0; }