/* ---- Trading Grid — dark terminal theme ---- */
:root {
  --bg: #0b0e11;
  --pane: #12161c;
  --pane-border: #1e2530;
  --header: #171c24;
  --text: #d6dde6;
  --muted: #7d8794;
  --accent: #4a9eff;
  --up: #26a69a;
  --up-flash: #0e5c4b;
  --down: #ef5350;
  --down-flash: #6e1f22;
  --flashbar-h: 34px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 13px/1.4 "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  overflow: hidden;
}

/* ---- toolbar ---- */
#toolbar {
  height: 44px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 14px;
  background: var(--header);
  border-bottom: 1px solid var(--pane-border);
}
.brand { font-weight: 700; letter-spacing: 2px; color: var(--accent); }
.spacer { flex: 1; }
.count-label { color: var(--muted); font-size: 11px; letter-spacing: 1px; }

.feed-status { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 11px; }
.feed-status .dot { width: 9px; height: 9px; border-radius: 50%; background: #888; transition: background .3s; }
.feed-status .dot.live  { background: var(--up); box-shadow: 0 0 6px var(--up); }
.feed-status .dot.dead  { background: var(--down); }

.count-selector { display: flex; gap: 4px; }
.count-selector button {
  width: 34px; height: 28px;
  background: #0d1117;
  color: var(--muted);
  border: 1px solid var(--pane-border);
  border-radius: 4px;
  cursor: pointer;
  font: inherit;
}
.count-selector button:hover { color: var(--text); border-color: var(--accent); }
.count-selector button.active {
  background: var(--accent);
  color: #06121f;
  border-color: var(--accent);
  font-weight: 700;
}

/* ---- grid layouts: cleanest arrangement per count ---- */
#grid {
  height: calc(100vh - 44px);
  display: grid;
  gap: 6px;
  padding: 6px;
}
#grid[data-count="1"] { grid-template-columns: 1fr; }
#grid[data-count="2"] { grid-template-columns: repeat(2, 1fr); }              /* side by side */
#grid[data-count="4"] { grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(2, 1fr); }
#grid[data-count="6"] { grid-template-columns: repeat(3, 1fr); grid-template-rows: repeat(2, 1fr); }
#grid[data-count="8"] { grid-template-columns: repeat(4, 1fr); grid-template-rows: repeat(2, 1fr); }

@media (max-width: 1400px) {
  #grid[data-count="8"] { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 1000px) {
  body { overflow: auto; }
  #grid { height: auto; min-height: calc(100vh - 44px); }
  #grid[data-count="4"],
  #grid[data-count="6"],
  #grid[data-count="8"] { grid-template-columns: repeat(2, 1fr); grid-template-rows: none; grid-auto-rows: 340px; }
}
@media (max-width: 620px) {
  #grid { grid-template-columns: 1fr !important; grid-template-rows: none !important; grid-auto-rows: 380px; }
}

/* ---- pane ---- */
.pane {
  display: flex;
  flex-direction: column;
  background: var(--pane);
  border: 1px solid var(--pane-border);
  border-radius: 6px;
  overflow: hidden;
  min-height: 0;
}

.pane-controls {
  display: flex;
  gap: 6px;
  padding: 6px 8px;
  background: var(--header);
  border-bottom: 1px solid var(--pane-border);
  align-items: center;
}
.pane-controls select,
.pane-controls input {
  background: #0d1117;
  color: var(--text);
  border: 1px solid var(--pane-border);
  border-radius: 4px;
  padding: 3px 6px;
  font: inherit;
  font-size: 12px;
  min-width: 0;
}
.pane-controls .sym-input { flex: 1; width: 70px; text-transform: uppercase; }
.pane-controls select:focus,
.pane-controls input:focus { outline: none; border-color: var(--accent); }

/* ---- "+Ind" button in pane-controls ---- */
.ind-btn {
  background: #0d1117;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 4px;
  padding: 3px 10px;
  font: inherit;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: background .15s, color .15s;
}
.ind-btn:hover { background: var(--accent); color: #06121f; }
.ind-btn.active { background: var(--accent); color: #06121f; }

/* ---- indicator popover ---- */
.ind-popover {
  display: none;
  position: absolute;
  top: 36px;
  right: 8px;
  width: 280px;
  max-height: 380px;
  background: #171c24;
  border: 1px solid var(--pane-border);
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(0,0,0,.5);
  z-index: 20;
  overflow-y: auto;
  flex-direction: column;
}
.ind-popover.show { display: flex; }

.ind-popover-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  background: #0d1117;
  border-bottom: 1px solid var(--pane-border);
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1px;
  position: sticky;
  top: 0;
  z-index: 1;
}
.ind-popover-close {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 14px;
  cursor: pointer;
  padding: 0 2px;
}
.ind-popover-close:hover { color: var(--down); }

.ind-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  cursor: pointer;
  border-bottom: 1px solid rgba(30,37,48,.4);
  transition: background .1s;
  font-size: 12px;
}
.ind-list-item:hover { background: #1e2530; }
.ind-list-item.selected { background: #1a2440; border-left: 2px solid var(--accent); }
.ind-list-item .ind-name { font-weight: 600; color: var(--text); }
.ind-list-item .ind-desc { font-size: 10px; color: var(--muted); margin-top: 1px; }

.ind-params {
  display: none;
  padding: 8px 10px;
  border-bottom: 1px solid var(--pane-border);
  background: #0d1117;
  flex-direction: column;
  gap: 6px;
}
.ind-params.show { display: flex; }

.ind-param-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
}
.ind-param-row label {
  flex: 1;
  color: var(--muted);
  font-size: 11px;
}
.ind-param-row input {
  width: 70px;
  background: #12161c;
  color: var(--text);
  border: 1px solid var(--pane-border);
  border-radius: 3px;
  padding: 3px 6px;
  font: inherit;
  font-size: 11px;
  text-align: right;
}
.ind-param-row input:focus { outline: none; border-color: var(--accent); }

.ind-add-btn {
  margin: 8px 10px;
  padding: 6px 0;
  background: var(--accent);
  color: #06121f;
  border: none;
  border-radius: 4px;
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity .15s;
}
.ind-add-btn:hover { opacity: .85; }
.ind-add-btn:disabled { opacity: .4; cursor: not-allowed; }

.ind-error-msg {
  display: none;
  padding: 6px 10px;
  color: var(--down);
  font-size: 11px;
}
.ind-error-msg.show { display: block; }

/* ---- indicator legend (below flashbar, above chart) ---- */
.ind-legend {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  background: #10151c;
  border-bottom: 1px solid var(--pane-border);
  flex-wrap: wrap;
  min-height: 24px;
}
.ind-legend.show { display: flex; }

.ind-legend-tag {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 7px;
  background: #0d1117;
  border: 1px solid var(--pane-border);
  border-radius: 3px;
  font-size: 10px;
  color: var(--text);
  cursor: default;
  white-space: nowrap;
}
.ind-legend-tag .tag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}
.ind-legend-tag .tag-close {
  margin-left: 2px;
  color: var(--muted);
  cursor: pointer;
  font-size: 11px;
  font-weight: 700;
  padding: 0 2px;
  border-radius: 2px;
  line-height: 1;
}
.ind-legend-tag .tag-close:hover {
  color: var(--down);
  background: rgba(239,83,80,.15);
}

/* thick price bar: flashes green/red on every tick */
.flashbar {
  height: var(--flashbar-h);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 10px;
  background: #10151c;
  border-bottom: 1px solid var(--pane-border);
  transition: background .15s;
}
.flashbar .px  { font-size: 16px; font-weight: 700; }
.flashbar .chg { font-size: 12px; }
.flashbar .chg.up   { color: var(--up); }
.flashbar .chg.down { color: var(--down); }
.flashbar .tick-dot { width: 7px; height: 7px; border-radius: 50%; background: #333; margin-left: auto; }

.flashbar.flash-up   { animation: flashUp .7s ease-out; }
.flashbar.flash-down { animation: flashDown .7s ease-out; }
@keyframes flashUp   { 0% { background: var(--up-flash);  box-shadow: inset 0 0 0 2px var(--up);   } 100% { background: #10151c; box-shadow: none; } }
@keyframes flashDown { 0% { background: var(--down-flash); box-shadow: inset 0 0 0 2px var(--down); } 100% { background: #10151c; box-shadow: none; } }

.chart-wrap { position: relative; flex: 1; min-height: 0; }
.chart-wrap .chart { position: absolute; inset: 0; }

.pane-status {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 12px;
  color: var(--muted);
  font-size: 12px;
  background: rgba(11, 14, 17, .75);
  z-index: 5;
  white-space: pre-line;
}
.pane-status.show { display: flex; }
.pane-status.error { color: var(--down); }