/* ── BuyTheDip · Dip backtest panel ──────────────────────────────── */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Row button */
.rtable thead .th-bt {
  width: 1%;
}

.rtable .td-bt {
  text-align: right;
  white-space: nowrap;
}

.bt-open {
  padding: 5px 9px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: var(--textDim);
  cursor: pointer;
  transition: border-color 120ms, color 120ms, background 120ms;
}

.bt-open:hover,
.bt-open:focus-visible {
  border-color: var(--amber);
  color: var(--amber);
  background: var(--amberBg);
  outline: none;
}

/* Drawer */
.bt-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 7, 10, 0.55);
  z-index: 60;
}

.bt-overlay[hidden],
.bt-drawer[hidden] {
  display: none;
}

.bt-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(620px, 100vw);
  z-index: 61;
  background: var(--bg);
  border-left: 1px solid var(--borderH);
  box-shadow: -12px 0 32px rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 180ms ease-out;
}

.bt-drawer.is-open {
  transform: translateX(0);
}

.bt-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--border);
}

.bt-title {
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.bt-sub {
  font-size: 12.5px;
  color: var(--textDim);
  margin-top: 2px;
}

.bt-close {
  font-size: 12px;
}

.bt-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

.bt-seg {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.bt-seg button {
  padding: 5px 12px;
  background: transparent;
  border: none;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--textOff);
  cursor: pointer;
}

.bt-seg button + button {
  border-left: 1px solid var(--border);
}

.bt-seg button:hover {
  color: var(--text);
}

.bt-seg button.active {
  background: var(--panel2);
  color: var(--amber);
}

.bt-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px 28px;
}

/* Content */
.bt-q {
  font-size: 13.5px;
  color: var(--textDim);
  line-height: 1.5;
}

.bt-q b {
  color: var(--text);
  font-family: var(--mono);
}

.bt-verdict {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 4px;
  border: 1px solid var(--border);
  font-size: 13px;
  line-height: 1.45;
}

.bt-verdict-icon {
  font-family: var(--mono);
  font-size: 12px;
  margin-top: 1px;
}

.bt-verdict.good { border-color: rgba(61, 220, 151, 0.3); background: rgba(61, 220, 151, 0.07); }
.bt-verdict.good .bt-verdict-icon { color: var(--green); }
.bt-verdict.bad { border-color: rgba(255, 92, 92, 0.3); background: var(--redBg); }
.bt-verdict.bad .bt-verdict-icon { color: var(--red); }
.bt-verdict.mixed { background: var(--amberBg); border-color: rgba(246, 193, 119, 0.3); }
.bt-verdict.mixed .bt-verdict-icon { color: var(--amber); }

.bt-tiles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.bt-tile {
  padding: 10px 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.bt-tile-v {
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 600;
  margin-top: 4px;
}

.bt-sec {
  margin-top: 22px;
  margin-bottom: 8px;
}

.bt-table,
.bt-events {
  border: 1px solid var(--border);
}

.bt-table thead th,
.bt-events thead th {
  padding: 8px 10px;
}

.bt-table tbody td,
.bt-events tbody td {
  padding: 8px 10px;
  vertical-align: top;
}

.bt-n,
.bt-vs {
  display: block;
  font-size: 9.5px;
  color: var(--textOff);
  margin-top: 2px;
  font-weight: 400;
}

.bt-muted {
  color: var(--textOff);
}

.bt-drawer .up { color: var(--green); }
.bt-drawer .dn { color: var(--red); }

.bt-note {
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--textOff);
  line-height: 1.5;
}

.bt-events-wrap {
  max-height: 320px;
  overflow-y: auto;
  border-radius: 2px;
}

/* Chart */
.bt-chart {
  position: relative;
  padding: 8px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.bt-chart svg {
  display: block;
  width: 100%;
  height: 180px;
  overflow: visible;
}

.bt-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
  stroke-linejoin: round;
}

.bt-area {
  fill: rgba(122, 162, 255, 0.08);
}

.bt-grid {
  stroke: var(--border);
  stroke-width: 1;
}

.bt-axis {
  fill: var(--textOff);
  font-family: var(--mono);
  font-size: 9px;
  text-anchor: middle;
}

.bt-mark circle:not(.bt-hit) {
  stroke: var(--panel);
  stroke-width: 2;
}

.bt-mark .bt-hit {
  fill: transparent;
  cursor: help;
}

.bt-mark.win circle:not(.bt-hit) { fill: var(--green); }
.bt-mark.loss circle:not(.bt-hit) { fill: var(--red); }
.bt-mark.pending circle:not(.bt-hit) { fill: var(--textDim); }

.bt-mark:hover circle:not(.bt-hit) {
  stroke: var(--text);
}

.bt-range {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--textOff);
  margin-top: 2px;
}

.bt-legend {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--textDim);
}

.bt-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.bt-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
}

.bt-dot.win { background: var(--green); }
.bt-dot.loss { background: var(--red); }
.bt-dot.pending { background: var(--textDim); }

/* States */
.bt-loading {
  padding: 40px 0;
}

.bt-indet {
  width: 35% !important;
  animation: btSlide 1.1s ease-in-out infinite;
}

@keyframes btSlide {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(300%); }
}

.bt-error,
.bt-empty {
  text-align: center;
  padding: 36px 8px;
}

.bt-error .cta-ghost {
  margin-top: 16px;
}

.bt-method {
  margin-top: 22px;
  font-size: 12px;
  color: var(--textDim);
}

.bt-method summary {
  cursor: pointer;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--textOff);
}

.bt-method summary:hover {
  color: var(--text);
}

.bt-method ul {
  margin: 10px 0 0 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  line-height: 1.5;
}

body.bt-open-body {
  overflow: hidden;
}

@media (max-width: 880px) {
  .bt-tiles {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .bt-tile-v {
    font-size: 16px;
  }

  .bt-body,
  .bt-head,
  .bt-controls {
    padding-left: 16px;
    padding-right: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bt-drawer { transition: none; }
  .bt-indet { animation: none; }
}