:root {
  color-scheme: dark;
  --bg: #0f1420;
  --panel: #171e2e;
  --text: #dbe2f0;
  --accent: #4f8cff;
  --border: #263149;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", Roboto, sans-serif;
}
header {
  padding: 12px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
h1 { margin: 0 0 8px; font-size: 20px; }
.controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
select, button {
  background: #202a41;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 14px;
  cursor: pointer;
}
button:hover { border-color: var(--accent); }
button:disabled { opacity: 0.5; cursor: default; }
input[type="date"], input[type="number"] {
  background: #202a41;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 14px;
  color-scheme: dark;
}
.date-range {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.date-range label { opacity: 0.7; font-size: 13px; }
.presets {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: 6px;
}
.preset-btn {
  padding: 3px 8px;
  font-size: 12px;
  background: transparent;
  color: #9fb2d8;
  border: 1px solid var(--border);
  border-radius: 5px;
}
.preset-btn:hover { color: var(--text); border-color: var(--accent); }
.preset-btn.active { color: var(--accent); border-color: var(--accent); }
.overlay-group { gap: 8px; }
.overlay-group .overlay-label { opacity: 0.7; font-size: 13px; }
.overlay-group label { display: inline-flex; align-items: center; gap: 4px; font-size: 13px; opacity: 0.9; }
input[type="checkbox"] { accent-color: var(--accent); width: 15px; height: 15px; vertical-align: middle; cursor: pointer; }
.link-btn {
  background: transparent;
  border: none;
  color: var(--accent);
  padding: 2px 6px;
  font-size: 13px;
  text-decoration: underline;
}
.export-label { margin-left: 16px; opacity: 0.7; }
#status-wrap { margin-top: 10px; }
#status-wrap.hidden { display: none; }
#status-text { font-size: 13px; margin-bottom: 4px; opacity: 0.85; }
.bar {
  height: 8px;
  border-radius: 4px;
  background: #223;
  overflow: hidden;
}
#status-bar {
  height: 100%;
  width: 0;
  background: var(--accent);
  transition: width 0.4s ease;
}
#status-bar.error { background: #e05555; }
main {
  display: grid;
  gap: 14px;
  padding: 14px 20px;
}
main.layout-2 { grid-template-columns: 1fr 1fr; }
main.layout-1 { grid-template-columns: 1fr; }
main.layout-3 { grid-template-columns: 1fr 1fr 1fr; }
.chart-container {
  position: relative;
}
.chart-container.wide { grid-column: 1 / -1; }
.chart {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-height: 340px;
}
.src-link {
  position: absolute;
  top: 6px;
  right: 10px;
  z-index: 5;
  font-size: 11px;
  color: var(--accent);
  text-decoration: none;
  opacity: 0.5;
  padding: 2px 6px;
  background: rgba(15,20,32,0.6);
  border-radius: 4px;
  line-height: 1;
}
.src-link:hover { opacity: 1; text-decoration: underline; }
.export-chk {
  position: absolute;
  top: 6px;
  left: 10px;
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  opacity: 0.75;
  line-height: 1;
  padding: 2px 6px;
  background: rgba(15,20,32,0.6);
  border-radius: 4px;
  cursor: pointer;
}
.export-chk:hover { opacity: 1; }
.chart-container:has(.chart-grip) .export-chk { left: 44px; }
.export-chk input:disabled { cursor: default; opacity: 0.5; }
.chart-grip, .section-grip {
  position: absolute;
  top: 6px;
  z-index: 5;
  cursor: grab;
  font-size: 12px;
  line-height: 1;
  padding: 2px 6px;
  background: #202a41;
  border: 1px solid var(--border);
  border-radius: 4px;
  opacity: 0.9;
  user-select: none;
}
.chart-grip, .section-grip { left: 10px; }
.chart-grip:hover, .section-grip:hover { opacity: 1; border-color: var(--accent); }
.chart-grip:active, .section-grip:active { cursor: grabbing; }
footer {
  padding: 8px 20px 20px;
  font-size: 12px;
  opacity: 0.6;
}
.vol-window-group {
  position: absolute;
  top: 6px;
  right: 10px;
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(15, 20, 32, 0.75);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
}
/* у candle-ret в том же правом верхнем углу стоит src-link — сдвигаем
   группу левее, чтобы кнопка "$" не перекрывалась ссылкой */
#cr-window-group { right: 44px; }
.vol-window-label {
  font-size: 11px;
  opacity: 0.8;
  margin-right: 2px;
  user-select: none;
}
.vol-btn {
  padding: 2px 7px;
  font-size: 11px;
  background: transparent;
  color: #9fb2d8;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  line-height: 1.2;
}
.vol-btn:hover {
  color: var(--text);
  border-color: var(--accent);
}
.vol-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  font-weight: 600;
}
.vol-regimes-chk {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: #9fb2d8;
  cursor: pointer;
  margin-left: 6px;
  padding-left: 8px;
  border-left: 1px solid var(--border);
  user-select: none;
}
.vol-regimes-chk:hover {
  color: var(--text);
}
.vol-regimes-chk input {
  cursor: pointer;
  accent-color: var(--accent);
}
@media (max-width: 1100px) {
  main.layout-2, main.layout-1, main.layout-3 { grid-template-columns: 1fr; }
}