:root {
  --bg:        #0d0f14;
  --panel:     #111318;
  --panel-alt: #161922;
  --border:    #2a2d35;
  --text:      #e6e6e6;
  --text-dim:  #9aa0ab;
  --accent:    #00e6e6;
  --green:     #2ecc71;
  --red:       #e74c3c;
  --yellow:    #f1c40f;
}

* { box-sizing: border-box; }

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

/* ── Header ───────────────────────────────────────────────────────────── */

.app-header {
  padding: 22px 28px 16px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #11141c, var(--bg));
}

.app-header h1 {
  margin: 0;
  font-size: 1.6rem;
  color: var(--accent);
  letter-spacing: 0.5px;
}

.app-header .subtitle {
  margin: 6px 0 0;
  color: var(--text-dim);
  font-size: 0.9rem;
}

/* ── Layout ───────────────────────────────────────────────────────────── */

.layout {
  display: flex;
  gap: 20px;
  padding: 20px;
  align-items: flex-start;
}

/* ── Sidebar / form ───────────────────────────────────────────────────── */

.sidebar {
  flex: 0 0 300px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  position: sticky;
  top: 20px;
}

.sidebar h2 {
  font-size: 0.95rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 18px 0 10px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 6px;
}

.sidebar h2:first-of-type { margin-top: 0; }

label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin: 10px 0 4px;
}

input[type="text"],
input[type="date"],
input[type="number"] {
  width: 100%;
  padding: 8px 10px;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.9rem;
}

input:focus {
  outline: none;
  border-color: var(--accent);
}

.field-row {
  display: flex;
  gap: 10px;
}
.field-row > div { flex: 1; }

.strategy-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.strategy-item label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 0.85rem;
  color: var(--text);
  cursor: pointer;
}

.strategy-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

#run-btn {
  width: 100%;
  margin-top: 20px;
  padding: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: #06222b;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: opacity 0.15s;
}
#run-btn:hover { opacity: 0.85; }
#run-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.status {
  margin-top: 12px;
  font-size: 0.78rem;
  min-height: 1.2em;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: "SF Mono", Consolas, monospace;
  max-height: 240px;
  overflow-y: auto;
}
.status.loading { color: var(--yellow); }
.status.success { color: var(--green); }
.status.error   { color: var(--red); }

/* ── Dashboard grid ───────────────────────────────────────────────────── */

.dashboard {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  min-width: 0;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}

.panel.full { grid-column: 1 / -1; }

.panel h2 {
  margin: 0 0 10px;
  font-size: 0.95rem;
  color: var(--text);
  font-weight: 600;
}

.chart-wrap {
  position: relative;
  height: 220px;
}
.chart-tall { height: 380px; }

/* ── Leader banner ────────────────────────────────────────────────────── */

.leader-banner {
  grid-column: 1 / -1;
  text-align: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: #00ff99;
  padding: 14px;
  letter-spacing: 0.5px;
}

/* ── Scrub controls ───────────────────────────────────────────────────── */

.scrub-panel {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 16px;
}

.play-btn {
  flex: 0 0 auto;
  padding: 8px 16px;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
}
.play-btn:hover { background: rgba(0, 230, 230, 0.1); }

#scrub {
  flex: 1;
  accent-color: var(--accent);
}

.scrub-date {
  flex: 0 0 auto;
  font-family: "SF Mono", Consolas, monospace;
  font-size: 0.85rem;
  color: var(--text-dim);
  min-width: 220px;
  text-align: right;
}

/* ── Tables ───────────────────────────────────────────────────────────── */

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  font-family: "SF Mono", Consolas, monospace;
}

table th, table td {
  padding: 8px 10px;
  text-align: right;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

table th:first-child, table td:first-child,
table th:nth-child(2), table td:nth-child(2) {
  text-align: left;
}

table thead th {
  color: var(--accent);
  font-weight: 600;
  position: sticky;
  top: 0;
  background: var(--panel);
}

table tbody tr:hover {
  background: var(--panel-alt);
}

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

/* ── Responsive ───────────────────────────────────────────────────────── */

@media (max-width: 980px) {
  .layout { flex-direction: column; }
  .sidebar { flex: 1 1 auto; position: static; width: 100%; }
  .dashboard { grid-template-columns: 1fr; }
}