:root {
  --bg: #0b0d0e;
  --panel-bg: #14171a;
  --panel-bg-2: #1b2023;
  --border: #262b2f;
  --text: #e6e8ea;
  --text-muted: #8a9198;
  --text-faint: #565c61;
  --accent: #19c37d;
  --accent-dim: #12734b;
  --accent-bg: #0f2e22;
  --accent-text: #0b0d0e;
  --danger: #e5484d;
  --danger-bg: #3a1618;
  --danger-border: #5c2226;
  --font: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8f7;
    --panel-bg: #ffffff;
    --panel-bg-2: #edf2ef;
    --border: #d4dcd7;
    --text: #17201c;
    --text-muted: #5c6862;
    --text-faint: #8a948e;
    --accent: #0e7a50;
    --accent-dim: #9ccbb5;
    --accent-bg: #e2f2ea;
    --accent-text: #ffffff;
    --danger: #c22f3e;
    --danger-bg: #fbe3e5;
    --danger-border: #eab6bc;
  }
}

[data-theme="dark"] {
  --bg: #0b0d0e;
  --panel-bg: #14171a;
  --panel-bg-2: #1b2023;
  --border: #262b2f;
  --text: #e6e8ea;
  --text-muted: #8a9198;
  --text-faint: #565c61;
  --accent: #19c37d;
  --accent-dim: #12734b;
  --accent-bg: #0f2e22;
  --accent-text: #0b0d0e;
  --danger: #e5484d;
  --danger-bg: #3a1618;
  --danger-border: #5c2226;
}

[data-theme="light"] {
  --bg: #f6f8f7;
  --panel-bg: #ffffff;
  --panel-bg-2: #edf2ef;
  --border: #d4dcd7;
  --text: #17201c;
  --text-muted: #5c6862;
  --text-faint: #8a948e;
  --accent: #0e7a50;
  --accent-dim: #9ccbb5;
  --accent-bg: #e2f2ea;
  --accent-text: #ffffff;
  --danger: #c22f3e;
  --danger-bg: #fbe3e5;
  --danger-border: #eab6bc;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  overflow-x: hidden;
}

body {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 16px 48px;
  font-size: 13px;
}

h1, h2, h3 {
  margin: 0;
  font-weight: 600;
}

button {
  font-family: var(--font);
  cursor: pointer;
}

input, textarea {
  font-family: var(--font);
  color: var(--text);
  background: var(--panel-bg-2);
  border: 1px solid var(--border);
  border-radius: 2px;
  font-variant-numeric: tabular-nums;
}

table, .data-table {
  font-variant-numeric: tabular-nums;
}

.page-header {
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 14px;
}

.header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.page-header h1 {
  font-size: 1.3rem;
  letter-spacing: 0.06em;
}

.subtitle {
  margin: 4px 0 0;
  color: var(--text-muted);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
}

.theme-toggle {
  flex-shrink: 0;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 2px;
  padding: 5px 10px;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent-dim);
}

.caption {
  margin: 0;
  color: var(--text-faint);
  font-size: 0.7rem;
}

.error-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: var(--danger);
  border-radius: 2px;
  padding: 8px 12px;
  margin-bottom: 16px;
  font-size: 0.8rem;
}

.panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  align-items: start;
}

@media (max-width: 900px) {
  .panels {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 12px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.panel-header h2 {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.prefill-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}


.btn-outline {
  background: transparent;
  border: 1px solid var(--accent-dim);
  color: var(--accent);
  border-radius: 2px;
  padding: 4px 10px;
  font-size: 0.76rem;
}

.btn-outline:hover {
  background: var(--accent-bg);
}

.btn-text {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.76rem;
  padding: 4px 6px;
}

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

.paste-area {
  margin-bottom: 10px;
  padding: 8px;
  background: var(--panel-bg-2);
  border: 1px solid var(--border);
  border-radius: 2px;
}

.paste-area textarea {
  width: 100%;
  resize: vertical;
  padding: 6px;
}

.paste-actions {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}

.table-container {
  max-height: 260px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 2px;
}

.results-table-container {
  max-height: 300px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.data-table thead th {
  position: sticky;
  top: 0;
  background: var(--panel-bg-2);
  text-align: left;
  padding: 6px 8px;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
  z-index: 1;
}

.data-table td {
  padding: 4px 8px;
  border-bottom: 1px solid var(--border);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tr.muted-row td {
  color: var(--text-faint);
}

.data-table input[type="number"] {
  width: 100%;
  padding: 3px 5px;
  font-size: 0.8rem;
}

.col-action {
  width: 28px;
}

.row-remove-btn {
  background: transparent;
  border: none;
  color: var(--text-faint);
  font-size: 0.95rem;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 2px;
}

.row-remove-btn:hover {
  color: var(--danger);
  background: var(--danger-bg);
}

.table-footer-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.table-meta {
  color: var(--text-faint);
  font-size: 0.72rem;
  margin-left: auto;
}

.segmented {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 12px;
}

.segmented-option {
  background: var(--panel-bg-2);
  border: none;
  color: var(--text-muted);
  padding: 6px 14px;
  font-size: 0.76rem;
  letter-spacing: 0.04em;
}

.segmented-option.active {
  background: var(--accent);
  color: var(--accent-text);
}

.mode-panel {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.preset-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.preset-chip {
  background: var(--panel-bg-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 2px;
  padding: 4px 10px;
  font-size: 0.7rem;
}

.preset-chip:hover {
  color: var(--accent);
  border-color: var(--accent-dim);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.field input[type="number"] {
  padding: 6px 8px;
  font-size: 0.9rem;
  text-transform: none;
  letter-spacing: normal;
}

.field input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.stack-curve-container {
  position: relative;
  background: var(--panel-bg-2);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 6px;
}

.curve-label {
  position: absolute;
  left: 10px;
  font-size: 0.66rem;
  color: var(--text-faint);
  pointer-events: none;
}

.curve-label-max {
  top: 8px;
}

.curve-label-min {
  bottom: 8px;
}

.prize-cell {
  display: flex;
  align-items: center;
  gap: 4px;
}

.prize-cell span {
  color: var(--text-muted);
}

.chart-tooltip {
  position: absolute;
  top: 6px;
  transform: translateX(-50%);
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 2px 8px;
  font-size: 0.7rem;
  color: var(--text);
  white-space: nowrap;
  pointer-events: none;
  z-index: 2;
}

.stack-curve-container svg {
  width: 100%;
  height: 150px;
  display: block;
}

#manualStacksTextarea {
  width: 100%;
  padding: 8px;
  resize: vertical;
}

.calculate-row {
  margin: 18px 0;
}

.calculate-btn {
  width: 100%;
  padding: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  background: var(--accent);
  color: var(--accent-text);
  border: 1px solid var(--accent);
  border-radius: 2px;
}

.calculate-btn:hover:not(:disabled) {
  filter: brightness(1.08);
}

.calculate-btn:disabled {
  background: var(--panel-bg-2);
  color: var(--text-muted);
  border-color: var(--border);
  cursor: progress;
}

.calculate-btn.is-live {
  background: var(--panel-bg-2);
  color: var(--text-muted);
  border-color: var(--accent-dim);
  font-weight: 500;
}

.live-status-line {
  margin-top: 6px;
  text-align: center;
  color: var(--text-faint);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}

.results {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 0;
  overflow: hidden;
}

.results-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 12px;
  background: var(--panel-bg-2);
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  padding: 8px 12px;
  font-variant-numeric: tabular-nums;
}

.status-line-main {
  text-transform: uppercase;
}

.results-summary .notice {
  display: block;
  width: 100%;
  color: var(--accent);
  font-size: 0.72rem;
  text-transform: uppercase;
}

.results-table-container,
.equity-chart-container {
  margin: 12px;
}

.equity-chart-container {
  position: relative;
  background: var(--panel-bg-2);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 6px;
}

.equity-chart-container svg {
  width: 100%;
  height: 280px;
  display: block;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
}

.overlay-panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 2px;
  width: min(420px, 90vw);
  max-height: 80vh;
  overflow-y: auto;
  padding: 14px;
}

.overlay-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.overlay-header h3 {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.banner-dismiss {
  background: transparent;
  border: none;
  color: inherit;
  font-size: 1.1rem;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 2px;
}

.banner-dismiss:hover {
  background: var(--accent-bg);
}

.preset-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.preset-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: var(--panel-bg-2);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 8px 10px;
  text-align: left;
}

.preset-item button.preset-select {
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 0.8rem;
  text-align: left;
  flex: 1;
  padding: 0;
}

.preset-item input[type="number"] {
  width: 70px;
  padding: 3px 6px;
}

.page-footer {
  margin-top: 32px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  color: var(--text-faint);
  font-size: 0.7rem;
  line-height: 1.6;
  text-align: center;
}

.page-footer a {
  color: var(--accent);
  text-decoration: none;
}

.footer-links a {
  margin: 0 8px;
}

.page-footer a:hover {
  text-decoration: underline;
}