.chart-wrap { background: var(--surface-raised); border: 1px solid var(--border); border-radius: 14px; padding: 16px 16px 8px; overflow: hidden; }
.legend { display:flex; gap: 18px; margin-bottom: 6px; flex-wrap: wrap; }
.legend .item { display:flex; align-items:center; gap: 7px; font-size: 0.82rem; color: var(--ink-2); }
.legend .sw { width: 18px; height: 3px; border-radius: 2px; flex: none; }
svg.chart { display:block; width: 100%; height: auto; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; }
svg.chart text { fill: var(--ink-muted); font-size: 11px; }
svg.chart .end-label { font-size: 11.5px; font-weight: 600; }
.chart-area { position: relative; }

.chart-tip {
  position: absolute; left: 0; top: 0; z-index: 4; pointer-events: none; min-width: 190px; width: max-content; padding: 9px 12px; border-radius: 9px;
  background: var(--surface-raised); color: var(--ink); border: 1px solid var(--border); box-shadow: 0 8px 24px rgba(0,0,0,.16);
  font-size: 0.78rem; opacity: 0; transition: opacity .08s;
}
.chart-tip.on { opacity: 1; }
.chart-tip .when { font-weight: 600; margin-bottom: 5px; color: var(--ink-2); font-size: 0.72rem; letter-spacing: .04em; text-transform: uppercase; }
.chart-tip .row { display:flex; align-items:center; gap: 7px; padding: 2px 0; }
.chart-tip .row.ghost { opacity: .6; }
.chart-tip .sw { width: 9px; height: 9px; border-radius: 2px; flex: none; }
.chart-tip .nm { color: var(--ink-2); flex: 1; white-space: nowrap; }
.chart-tip .v { font-family: "IBM Plex Mono", ui-monospace, monospace; font-variant-numeric: tabular-nums; font-weight: 600; }
.chart-tip .diff { margin-top: 6px; padding-top: 6px; border-top: 1px solid var(--grid); color: var(--ink-2); }
.chart-tip .diff strong { font-family: "IBM Plex Mono", ui-monospace, monospace; color: var(--ink); }

.chart-top { display:flex; align-items:center; justify-content:space-between; gap: 10px 20px; flex-wrap: wrap; margin-bottom: 8px; }
.chart-top .legend { margin-bottom: 0; }
.horizon { display:flex; align-items:center; gap: 4px; flex-wrap: wrap; }
.horizon .lbl { font-size: 0.78rem; color: var(--ink-muted); margin-inline: 4px; }
.horizon button {
  position: relative; min-width: 34px; padding: 5px 8px; font: inherit; font-size: 0.8rem; font-weight: 600; font-variant-numeric: tabular-nums;
  border: 1px solid var(--border); border-radius: 7px; background: var(--surface); color: var(--ink-2); cursor: pointer;
}
.horizon button:hover { border-color: var(--accent-property); color: var(--ink); }
.horizon button[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--page); }
.horizon button:focus-visible { outline: 2px solid var(--accent-property); outline-offset: 2px; }
.horizon button i { position: absolute; top: -3px; right: -3px; width: 7px; height: 7px; border-radius: 50%; background: var(--brand); }