/* ===== CSS VARIABLES – DARK THEME ===== */
:root {
  color-scheme: dark;
  --bg: #0d1117;
  --surface: #161b22;
  --surface2: #1c2130;
  --border: #30363d;
  --border-soft: #21262d;
  --ink: #e6edf3;
  --ink-muted: #8b949e;
  --ink-faint: #484f58;
  --green: #3fb950;
  --green-dim: #238636;
  --green-glow: rgba(63,185,80,.15);
  --blue: #58a6ff;
  --blue-dim: #1f6feb;
  --red: #f85149;
  --red-dim: #b62324;
  --amber: #e3b341;
  --orange: #db6d28;
  --purple: #bc8cff;
  --shadow: 0 4px 16px rgba(0,0,0,.4);
  --shadow-sm: 0 2px 8px rgba(0,0,0,.3);
  --radius: 8px;
  --radius-sm: 5px;
  --transition: .15s ease;
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

h1, h2, h3, h4, p { margin: 0; }

/* ===== TOPBAR ===== */
.topbar {
  height: 80px;
  padding: 0 max(24px, calc((100vw - 1380px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.topbar-brand { display: flex; flex-direction: column; gap: 2px; }
.eyebrow {
  color: var(--green);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

h1 { font-size: 20px; font-weight: 700; letter-spacing: -.01em; }
h2 { font-size: 16px; font-weight: 600; }
h3 { font-size: 14px; font-weight: 600; margin-bottom: 14px; }

.status-pill {
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--ink-muted);
  transition: color var(--transition), border-color var(--transition);
}
.status-pill.online { color: var(--green); border-color: var(--green-dim); }
.status-pill.error { color: var(--red); border-color: var(--red-dim); }

/* ===== LAYOUT ===== */
main {
  max-width: 1380px;
  margin: 0 auto;
  padding: 24px;
}

.notice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 20px;
  padding: 12px 16px;
  background: rgba(227,179,65,.07);
  border: 1px solid rgba(227,179,65,.25);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius);
  color: #c9a227;
  font-size: 13px;
}
.notice-icon { flex-shrink: 0; font-size: 15px; margin-top: 1px; }

.data-warnings {
  margin-bottom: 16px;
  padding: 12px 16px;
  background: rgba(248,81,73,.07);
  border: 1px solid rgba(248,81,73,.25);
  border-left: 3px solid var(--red);
  border-radius: var(--radius);
  color: #f85149;
  font-size: 13px;
}
.data-warnings .warning-line { margin: 2px 0; }

.panel {
  margin-bottom: 16px;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.mt-0 { margin-top: 0; }
.mt-16 { margin-top: 16px; }
.mb-16 { margin-bottom: 16px; }
.mb-20 { margin-bottom: 20px; }

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.step-label {
  color: var(--green);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
  margin-bottom: 2px;
}

/* ===== FORMS ===== */
.field-grid {
  display: grid;
  gap: 14px;
}
.field-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.field-grid.cols-4 { grid-template-columns: repeat(4, minmax(140px, 1fr)); }
.field-col-span-2 { grid-column: span 2; }

label, .field-label {
  display: flex;
  flex-direction: column;
  gap: 5px;
  color: var(--ink-muted);
  font-size: 12px;
  font-weight: 600;
}

.field-title {
  color: var(--ink-muted);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 8px;
}

.field-help {
  color: var(--ink-faint);
  font-size: 11px;
  font-weight: 400;
}

input[type="text"],
input[type="number"],
input[type="date"],
select {
  width: 100%;
  min-height: 34px;
  padding: 6px 10px;
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 13px;
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--blue-dim);
  box-shadow: 0 0 0 3px rgba(31,111,235,.2);
}

input:disabled, select:disabled {
  opacity: .4;
  cursor: not-allowed;
}

/* ===== RADIO GROUP ===== */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.radio-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--transition);
}
.radio-item:has(input:checked) {
  border-color: var(--green-dim);
  background: var(--green-glow);
}
.radio-item input[type="radio"] {
  width: 15px;
  min-height: 15px;
  margin-top: 3px;
  flex-shrink: 0;
  accent-color: var(--green);
}
.radio-body { display: flex; flex-direction: column; gap: 2px; }
.radio-body strong { color: var(--ink); font-size: 13px; }
.radio-body small { color: var(--ink-muted); font-size: 11px; font-weight: 400; }

/* ===== BUILDER ROWS ===== */
.builder-block {
  padding-top: 16px;
  border-top: 1px solid var(--border-soft);
}
.builder-block + .builder-block { margin-top: 0; }

.builder-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  color: var(--ink-muted);
  font-size: 12px;
  font-weight: 600;
}

.link-btn {
  border: 0;
  background: transparent;
  color: var(--blue);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
  padding: 2px 4px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.link-btn:hover { background: rgba(88,166,255,.1); }

.dynamic-row {
  display: grid;
  grid-template-columns: 1.4fr .9fr 1.2fr 28px;
  gap: 6px;
  margin-bottom: 6px;
  align-items: end;
}
.sort-row { grid-template-columns: 1.6fr 1fr 28px; }

.remove-btn {
  width: 28px;
  min-height: 34px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--red);
  font-size: 15px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}
.remove-btn:hover { background: rgba(248,81,73,.12); }

/* Column group labels in select */
optgroup { font-weight: 600; font-style: normal; }

/* ===== CAPS EDITOR ===== */
details {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
}
details[open] { border-color: var(--border); }

.caps-summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--surface2);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  list-style: none;
  user-select: none;
}
.caps-summary::-webkit-details-marker { display: none; }
.caps-summary::before {
  content: "▶";
  font-size: 10px;
  color: var(--ink-muted);
  transition: transform var(--transition);
}
details[open] .caps-summary::before { transform: rotate(90deg); }

.badge {
  padding: 2px 8px;
  background: var(--green-glow);
  border: 1px solid var(--green-dim);
  border-radius: 999px;
  color: var(--green);
  font-size: 11px;
  font-weight: 700;
  min-width: 20px;
  text-align: center;
}
.badge:empty { display: none; }

.caps-controls {
  padding: 16px;
  background: var(--surface);
}

.caps-level-row {
  margin-bottom: 14px;
  max-width: 260px;
}

.caps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}

.caps-item label {
  color: var(--ink-muted);
  font-size: 11px;
  font-weight: 600;
}
.caps-item .caps-id {
  color: var(--ink-faint);
  font-size: 10px;
  font-weight: 400;
  margin-left: 4px;
}

/* ===== BUTTONS ===== */
.submit-row {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  margin: 10px 0 36px;
}

.btn-primary {
  min-height: 40px;
  min-width: 200px;
  padding: 9px 20px;
  background: var(--green-dim);
  color: white;
  border: 1px solid var(--green-dim);
  border-radius: var(--radius);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition);
  box-shadow: 0 0 0 0 var(--green-glow);
}
.btn-primary:hover { background: #2ea043; box-shadow: 0 0 0 4px var(--green-glow); }
.btn-primary:disabled { opacity: .55; cursor: wait; }

.form-message {
  color: var(--red);
  font-size: 13px;
  max-width: 520px;
  text-align: right;
}

/* ===== RESULTS ===== */
.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.result-id-badge {
  color: var(--ink-faint);
  font-size: 11px;
  font-family: ui-monospace, "Cascadia Code", monospace;
}

/* ===== METRICS GRID ===== */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  gap: 10px;
  margin-bottom: 18px;
}

.metric-card {
  padding: 14px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 2px solid var(--green-dim);
  border-radius: var(--radius);
}
.metric-label {
  display: block;
  color: var(--ink-muted);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  min-height: 28px;
}
.metric-value {
  display: block;
  margin-top: 6px;
  font-size: 18px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}
.metric-value.positive { color: var(--green); }
.metric-value.negative { color: var(--red); }

/* ===== CHARTS ===== */
.chart-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.chart-row:has(> :only-child) { grid-template-columns: 1fr; }

.chart-panel { min-width: 0; }
.chart-panel--sm { }
.chart-host { min-height: 220px; }
.chart-host svg { display: block; width: 100%; height: 220px; overflow: visible; }
.chart-host .ch-grid { stroke: var(--border-soft); stroke-width: 1; }
.chart-host .ch-label { fill: var(--ink-faint); font-size: 10px; }
.chart-host .ch-equity-area { fill: rgba(63,185,80,.08); }
.chart-host .ch-equity-line { fill: none; stroke: var(--green); stroke-width: 2; vector-effect: non-scaling-stroke; }
.chart-host .ch-dd-area { fill: rgba(248,81,73,.10); }
.chart-host .ch-dd-line { fill: none; stroke: var(--red); stroke-width: 1.8; vector-effect: non-scaling-stroke; }
.chart-host .ch-pos-line { fill: none; stroke: var(--blue); stroke-width: 2; vector-effect: non-scaling-stroke; }
.chart-host .ch-cash-line { fill: none; stroke: var(--amber); stroke-width: 1.5; stroke-dasharray: 4 3; vector-effect: non-scaling-stroke; }
.chart-host .ch-legend { fill: var(--ink-muted); font-size: 10px; }

/* ===== TABLES ===== */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

th {
  padding: 9px 10px;
  background: var(--surface2);
  color: var(--ink-muted);
  text-align: right;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  white-space: nowrap;
  border-bottom: 1px solid var(--border);
}
th:first-child, th:nth-child(2), th:nth-child(7) { text-align: left; }
td:first-child, td:nth-child(2), td:nth-child(7) { text-align: left; }

td {
  padding: 10px;
  border-top: 1px solid var(--border-soft);
  text-align: right;
  white-space: nowrap;
  color: var(--ink);
}

.positive { color: var(--green); }
.negative { color: var(--red); }

/* Reason badges */
.reason-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.reason-stop_loss { background: rgba(248,81,73,.15); color: var(--red); border: 1px solid rgba(248,81,73,.3); }
.reason-take_profit { background: rgba(63,185,80,.12); color: var(--green); border: 1px solid rgba(63,185,80,.25); }
.reason-trailing_stop { background: rgba(227,179,65,.12); color: var(--amber); border: 1px solid rgba(227,179,65,.3); }
.reason-exposure_cap { background: rgba(219,109,40,.12); color: var(--orange); border: 1px solid rgba(219,109,40,.3); }
.reason-rebalance { background: rgba(88,166,255,.1); color: var(--blue); border: 1px solid rgba(88,166,255,.25); }
.reason-check_membership { background: rgba(188,140,255,.1); color: var(--purple); border: 1px solid rgba(188,140,255,.25); }
.reason-initial { background: var(--green-glow); color: var(--green); border: 1px solid var(--green-dim); }
.reason-delisted { background: rgba(139,148,158,.1); color: var(--ink-muted); border: 1px solid var(--border); }
.reason-replacement { background: rgba(88,166,255,.1); color: var(--blue); border: 1px solid rgba(88,166,255,.25); }

/* ===== PAGINATION ===== */
.pagination {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--ink-muted);
}
.pagination button {
  min-height: 30px;
  padding: 4px 10px;
  background: var(--surface2);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
  transition: background var(--transition);
}
.pagination button:hover:not(:disabled) { background: var(--border); }
.pagination button:disabled { opacity: .4; cursor: default; }

/* ===== FOOTER ===== */
footer {
  padding: 24px;
  color: var(--ink-faint);
  text-align: center;
  font-size: 11px;
  border-top: 1px solid var(--border-soft);
  margin-top: 32px;
}

/* ===== FIELD DISABLED STATE ===== */
.field-disabled label,
label.field-disabled {
  opacity: .45;
}

/* ===== CHART INTERACTION ===== */
.ch-xhair {
  stroke: var(--ink-faint);
  stroke-width: 1;
  stroke-dasharray: 3 3;
  pointer-events: none;
}
.ch-dot {
  pointer-events: none;
}
.ch-tooltip {
  position: fixed;
  z-index: 9999;
  padding: 8px 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  font-size: 12px;
  pointer-events: none;
  white-space: nowrap;
  min-width: 140px;
}
.ch-tt-date {
  color: var(--ink-muted);
  font-size: 11px;
  font-weight: 600;
  margin-bottom: 5px;
  font-variant-numeric: tabular-nums;
}
.ch-tt-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 1px 0;
}
.ch-tt-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.ch-tt-label {
  color: var(--ink-muted);
  flex: 1;
}
.ch-tt-value {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  margin-left: 8px;
}

/* ===== PERF TIMINGS SECTION ===== */
.perf-table th:nth-child(2),
.perf-table th:nth-child(3) { text-align: right; }
.perf-table th:last-child { text-align: left; width: 200px; }
.perf-table .perf-time { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.perf-table .perf-pct  { text-align: right; color: var(--ink-faint); width: 60px; }
.perf-bar-cell { padding: 8px 10px; }
.perf-bar-wrap {
  height: 8px;
  background: var(--border-soft);
  border-radius: 4px;
  overflow: hidden;
  min-width: 80px;
  max-width: 200px;
}
.perf-bar-fill {
  height: 100%;
  border-radius: 4px;
  min-width: 2px;
  transition: width .3s ease;
}
.perf-row-sep td { border-top: 1px solid var(--border); font-weight: 600; color: var(--ink); }
.perf-row-total td { border-top: 2px solid var(--green-dim); font-weight: 700; color: var(--green); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1100px) {
  .metrics-grid { grid-template-columns: repeat(5, 1fr); }
  .field-grid.cols-4 { grid-template-columns: repeat(3, 1fr); }
  .chart-row { grid-template-columns: 1fr; }
}
@media (max-width: 800px) {
  main { padding: 16px; }
  .panel { padding: 18px; }
  .field-grid.cols-3,
  .field-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .metrics-grid { grid-template-columns: repeat(3, 1fr); }
  .field-col-span-2 { grid-column: span 2; }
  .dynamic-row { grid-template-columns: 1fr 1fr 28px; }
  .dynamic-row .filter-value { grid-column: 1 / 3; }
  .sort-row { grid-template-columns: 1fr 1fr 28px; }
  .caps-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .topbar { padding: 0 16px; }
  .status-pill { display: none; }
  .field-grid.cols-3,
  .field-grid.cols-4 { grid-template-columns: 1fr; }
  .field-col-span-2 { grid-column: span 1; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .submit-row { flex-direction: column; align-items: stretch; text-align: center; }
  .btn-primary { min-width: unset; }
}