:root {
  --bg: #0e1117;
  --panel: #161b22;
  --border: #2a313c;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #ffeb3b;
  --blue: #4da6ff;
  --green: #4caf50;
  --red: #f44336;
  --amber: #ffc107;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header {
  text-align: center;
  padding: 22px 16px 8px;
}
header h1 { margin: 0; font-size: 2rem; letter-spacing: 0.5px; }
.tagline { margin: 4px 0 0; color: var(--muted); font-size: 0.95rem; }

main { max-width: 1280px; margin: 0 auto; padding: 12px 18px 40px; }

/* ---------- formulario ---------- */
#controls {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: flex-end;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
}
.field { display: flex; flex-direction: column; gap: 4px; }
.field label { font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.4px; }
.field input, .field select {
  background: #0d1117;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 9px 11px;
  font-size: 0.95rem;
  min-width: 110px;
}
.field.checkbox { flex-direction: row; align-items: center; padding-bottom: 9px; }
.field.checkbox label { display: flex; align-items: center; gap: 6px; text-transform: none; font-size: 0.9rem; color: var(--text); }

#run {
  margin-left: auto;
  background: linear-gradient(135deg, #ffd200, #ff9800);
  color: #1a1a1a;
  font-weight: 700;
  border: none;
  border-radius: 8px;
  padding: 11px 26px;
  font-size: 1rem;
  cursor: pointer;
  transition: transform 0.08s ease, filter 0.15s ease;
}
#run:hover { filter: brightness(1.08); }
#run:active { transform: translateY(1px); }
#run:disabled { opacity: 0.5; cursor: progress; }

/* ---------- estado ---------- */
.status { min-height: 22px; margin: 12px 2px; font-size: 0.9rem; color: var(--muted); }
.status.error { color: var(--red); }
.status.loading::after {
  content: ""; display: inline-block; width: 12px; height: 12px;
  margin-left: 8px; border: 2px solid var(--muted); border-top-color: transparent;
  border-radius: 50%; animation: spin 0.8s linear infinite; vertical-align: -2px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- layout principal ---------- */
.layout { display: grid; grid-template-columns: 1fr 320px; gap: 18px; }
@media (max-width: 980px) { .layout { grid-template-columns: 1fr; } }

.chart {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  min-height: 520px;
  padding: 6px;
}

/* ---------- panel lateral ---------- */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}
.panel.hidden { display: none; }
.panel h3 { margin: 18px 0 8px; font-size: 0.85rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.4px; }

.verdict {
  text-align: center;
  font-weight: 800;
  font-size: 0.95rem;
  padding: 12px 10px;
  border-radius: 10px;
  margin-bottom: 10px;
  border: 1px solid var(--border);
  background: #0d1117;
  line-height: 1.3;
}
.verdict.moderado { color: var(--green); border-color: var(--green); background: rgba(76,175,80,0.08); }
.verdict.debil { color: var(--amber); border-color: var(--amber); background: rgba(255,193,7,0.08); }
.verdict.ninguno { color: var(--red); border-color: var(--red); background: rgba(244,67,54,0.08); }

.badge {
  text-align: center;
  font-weight: 800;
  font-size: 1.02rem;
  padding: 10px;
  border-radius: 10px;
  background: #0d1117;
  border: 1px solid var(--border);
}
.badge.up { color: var(--green); border-color: var(--green); }
.badge.down { color: var(--red); border-color: var(--red); }
.badge.flat { color: var(--amber); border-color: var(--amber); }

.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 14px; }
.stat { background: #0d1117; border: 1px solid var(--border); border-radius: 8px; padding: 9px 11px; }
.stat span { display: block; font-size: 0.72rem; color: var(--muted); }
.stat b { font-size: 1.05rem; }

table.range { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
table.range td, table.range th { padding: 5px 4px; border-bottom: 1px solid var(--border); }
table.range th { text-align: left; color: var(--muted); font-weight: 600; font-size: 0.78rem; }
table.range td:last-child, table.range th:last-child { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }
table.range tr.hot td { color: var(--green); }

.equity-section {
  margin-top: 18px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
}
.equity-section.hidden { display: none; }
.equity-title { margin: 0 0 8px; font-size: 0.9rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.4px; }
.equity-sub { text-transform: none; letter-spacing: 0; font-weight: 600; margin-left: 8px; }
.equity-chart { min-height: 320px; }

.backtest { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.82rem; color: #cfd8dc; white-space: pre-line; }
.vol-note { font-size: 0.78rem; color: var(--muted); margin-top: 12px; }

.disclaimer {
  margin-top: 22px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--muted);
  background: rgba(244, 67, 54, 0.06);
  border: 1px solid rgba(244, 67, 54, 0.25);
  border-radius: 10px;
  padding: 12px 16px;
}