/* Paper Trader — Robinhood-like dark theme. Plain CSS, no build step. */

:root {
  --bg: #0e0e0e;
  --surface: #1a1a1a;
  --border: #2a2a2a;
  --text: #ffffff;
  --text-dim: #b3b3b3;
  --text-faint: #7a7a7a;
  --green: #00c805;
  --green-bg: rgba(0, 200, 5, 0.12);
  --red: #ff5000;
  --red-bg: rgba(255, 80, 0, 0.12);
  --radius: 8px;
  --font-num: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-num);
  font-size: 15px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 520px;
  margin: 0 auto;
  padding: 0 16px 24px;
}

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

/* ---------- top bar ---------- */

.topbar {
  padding: 18px 4px 6px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.brand {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.topbar-sub {
  font-size: 12px;
  color: var(--text-faint);
}

/* ---------- hero ---------- */

.hero { padding: 10px 4px 14px; }

.hero-equity {
  font-size: 38px;
  font-weight: 600;
  letter-spacing: -0.5px;
  font-variant-numeric: tabular-nums;
}

.hero-change {
  margin-top: 4px;
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

/* ---------- panels & lists ---------- */

.panel { margin-top: 18px; }

.panel h2 {
  margin: 0 0 6px 4px;
  font-size: 17px;
  font-weight: 700;
}

.subhead {
  margin: 18px 0 4px 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dim);
}

.list > :first-child { border-top: 1px solid var(--border); }

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 4px;
  border-bottom: 1px solid var(--border);
}

.row-main { min-width: 0; }

.row-title {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.3px;
}

.row-sub {
  font-size: 12.5px;
  color: var(--text-dim);
  margin-top: 2px;
  font-variant-numeric: tabular-nums;
}

.row-side {
  text-align: right;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.row-price {
  font-size: 15px;
  font-weight: 500;
}

.pill {
  display: inline-block;
  margin-top: 4px;
  padding: 3px 9px;
  border-radius: 4px;
  font-size: 12.5px;
  font-weight: 600;
}

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

.empty {
  padding: 20px 4px;
  color: var(--text-faint);
  font-size: 14px;
  border-top: 1px solid var(--border);
}

/* ---------- timeframe buttons ---------- */

.tf-row {
  display: flex;
  gap: 4px;
  margin-bottom: 8px;
}

.tf-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.6px;
  padding: 8px 0;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

.tf-btn:hover { color: var(--text); }

.tf-btn.active { color: var(--text); border-bottom-color: var(--green); }

/* ---------- chart ---------- */

.chart-wrap {
  position: relative;
  width: 100%;
}

#equityChart {
  width: 100%;
  height: 240px;
  display: block;
}

.chart-status {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-faint);
  font-size: 14px;
  background: var(--bg);
}

/* ---------- buying power card ---------- */

.row-card {
  margin-top: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.row-label { color: var(--text-dim); font-size: 14px; }
.row-value { font-size: 17px; font-weight: 600; font-variant-numeric: tabular-nums; }

/* ---------- trade badges ---------- */

.badge {
  display: inline-block;
  min-width: 44px;
  text-align: center;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  margin-right: 10px;
}

.badge.buy { background: var(--green-bg); color: var(--green); }
.badge.sell { background: var(--red-bg); color: var(--red); }

.trade-line { display: flex; align-items: center; min-width: 0; }
.trade-line .row-title { margin-right: 8px; }

/* ---------- backtest ---------- */

.backtest-sub {
  font-size: 12.5px;
  color: var(--text-faint);
  margin: 0 0 12px 4px;
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.stat-cell {
  background: var(--surface);
  padding: 14px 16px;
}

.stat-cell .k {
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-cell .v {
  margin-top: 4px;
  font-size: 20px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.compare-row {
  margin-top: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 13.5px;
  color: var(--text-dim);
  line-height: 1.55;
}

.compare-row strong { color: var(--text); font-weight: 600; }

/* ---------- rules ---------- */

details.rules summary {
  cursor: pointer;
  font-size: 17px;
  font-weight: 700;
  padding: 4px;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

details.rules summary::-webkit-details-marker { display: none; }

details.rules summary::after {
  content: "+";
  color: var(--text-faint);
  font-size: 22px;
  font-weight: 400;
}

details.rules[open] summary::after { content: "–"; }

.rules-text {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.65;
  padding: 6px 4px 0;
  margin: 0;
}

/* ---------- disclaimer ---------- */

.disclaimer {
  margin-top: 28px;
  padding: 16px 4px 0;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-faint);
  line-height: 1.6;
}