:root {
  --bg: #0d1117;
  --panel: #131722;
  --panel-2: #1c2230;
  --border: #232838;
  --text: #d1d4dc;
  --text-dim: #787b86;
  --blue: #2962ff;
  --green: #26a69a;
  --red: #ef5350;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 12px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.5px;
}
.brand-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 8px var(--blue);
}

.tabs { display: flex; gap: 6px; flex: 1; flex-wrap: wrap; }
.tab {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-dim);
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
}
.tab:hover { color: var(--text); background: var(--panel-2); }
.tab.active { color: #fff; background: var(--blue); }

.topbar-cash { text-align: right; font-size: 14px; }
.topbar-cash .label { display: block; color: var(--text-dim); font-size: 11px; }
#topbar-cash-value { font-weight: 700; color: var(--green); font-size: 16px; }

main { padding: 20px; max-width: 1400px; margin: 0 auto; }

.view { display: none; }
.view.active { display: block; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 18px;
}
.card-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 10px;
  gap: 10px;
  flex-wrap: wrap;
}
.card-header h2 { margin: 0; font-size: 16px; }
.hint { color: var(--text-dim); font-size: 12px; }

.summary-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}
.stat-card { display: flex; flex-direction: column; justify-content: center; }
.stat-label { color: var(--text-dim); font-size: 12px; margin-bottom: 6px; }
.stat-value { font-size: 22px; font-weight: 700; }

.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th {
  text-align: left;
  color: var(--text-dim);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}
.table td { padding: 10px; border-bottom: 1px solid var(--border); }
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: var(--panel-2); }

.pos { color: var(--green); }
.neg { color: var(--red); }

.btn {
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-weight: 700;
  cursor: pointer;
  font-size: 14px;
}
.btn-buy { background: var(--green); color: #06231f; }
.btn-sell { background: var(--red); color: #2b0b0a; }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text-dim); width: 100%; }
.btn-ghost:hover { color: var(--red); border-color: var(--red); }
.btn-small {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 12px;
  cursor: pointer;
}
.btn-small:hover { border-color: var(--blue); color: #fff; }

.markets-layout {
  display: grid;
  grid-template-columns: 220px 1fr 300px;
  gap: 14px;
  align-items: start;
}
.instrument-group-label {
  color: var(--text-dim);
  font-size: 11px;
  text-transform: uppercase;
  margin: 12px 0 6px;
}
.instrument-group-label:first-of-type { margin-top: 0; }
.instrument-buttons { display: flex; flex-direction: column; gap: 4px; }
.instrument-btn {
  text-align: left;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text);
  padding: 8px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  display: flex;
  justify-content: space-between;
}
.instrument-btn:hover { background: var(--panel-2); }
.instrument-btn.active { background: var(--blue); color: #fff; }

.chart-card { min-height: 560px; display: flex; flex-direction: column; }
.tv-chart-wrapper { flex: 1; min-height: 500px; }

.trade-form { display: flex; flex-direction: column; gap: 10px; }
.trade-row { display: flex; justify-content: space-between; font-size: 13px; color: var(--text-dim); }
.trade-row strong { color: var(--text); }
.trade-row.estimate strong { color: var(--blue); }
.field-label { font-size: 12px; color: var(--text-dim); margin-top: 4px; }
input[type="number"] {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px;
  border-radius: 8px;
  font-size: 15px;
}
.trade-buttons { display: flex; gap: 10px; margin-top: 6px; }
.trade-buttons .btn { flex: 1; }
.trade-message { font-size: 13px; min-height: 18px; }
.trade-message.error { color: var(--red); }
.trade-message.success { color: var(--green); }

.empty-hint { color: var(--text-dim); font-size: 13px; padding: 10px 4px; }

.learn-card h2 { margin-top: 0; }
.learn-card .lead { color: var(--text-dim); }
.learn-card details {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 10px;
}
.learn-card summary { cursor: pointer; font-weight: 700; }
.learn-card p { line-height: 1.6; font-size: 14px; }

.footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 12px;
  padding: 20px;
}

@media (max-width: 980px) {
  .markets-layout { grid-template-columns: 1fr; }
  .summary-row { grid-template-columns: repeat(2, 1fr); }
}