/* Chart Studio ------------------------------------------------------------ */
.hero { padding: 40px 0 18px; max-width: 820px; }
.hero .eyebrow { margin-bottom: 13px; }
.hero h1 { font-family: var(--serif); font-weight: 500; font-size: clamp(30px, 5.5vw, 50px); line-height: 1.03; letter-spacing: -0.015em; margin: 0 0 12px; }
.hero h1 em { font-style: italic; color: var(--accent-2); }
.hero p { font-size: clamp(14px, 2vw, 16px); color: var(--muted); line-height: 1.6; margin: 0; max-width: 620px; }

.studio-grid { display: grid; grid-template-columns: 320px minmax(0, 1fr); gap: 20px; align-items: start; margin-top: 22px; }
@media (max-width: 900px) { .studio-grid { grid-template-columns: 1fr; } }

.studio-side { display: flex; flex-direction: column; gap: 14px; }
.add-series { position: relative; }
.add-series input { width: 100%; background: var(--surface); border: 1px solid var(--line); color: var(--text);
  border-radius: 999px; padding: 10px 16px; font-family: var(--sans); font-size: 13.5px; outline: none; }
.add-series input:focus { border-color: var(--accent); }
.add-series input::placeholder { color: var(--faint); }
.as-drop { display: none; position: absolute; top: calc(100% + 6px); left: 0; right: 0; z-index: 30;
  background: var(--surface-2); border: 1px solid var(--line-2); border-radius: var(--r-md); padding: 6px; box-shadow: 0 16px 40px rgba(0,0,0,.55); max-height: 320px; overflow: auto; }
.as-drop.open { display: block; }
.as-item { display: flex; align-items: center; gap: 9px; padding: 8px 10px; border-radius: var(--r-sm); cursor: pointer; }
.as-item.hi, .as-item:hover { background: var(--surface-3); }
.as-id { font-family: var(--mono); font-size: 12px; color: var(--brass); min-width: 56px; }
.as-lb { font-size: 12.5px; color: var(--muted); flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.as-kind { font-family: var(--mono); font-size: 9.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--faint); }

.series-list { display: flex; flex-direction: column; gap: 8px; }
.ser-empty { color: var(--faint); font-size: 13px; font-family: var(--mono); }
.ser-chip { display: flex; align-items: center; gap: 9px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-md); padding: 10px 12px; }
.ser-chip .dot { width: 10px; height: 10px; border-radius: 3px; flex: 0 0 auto; }
.ser-chip .s-id { font-family: var(--mono); font-size: 12.5px; color: var(--text); }
.ser-chip .s-lb { font-size: 12px; color: var(--faint); flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ser-chip .s-del { background: none; border: 0; color: var(--faint); font-size: 17px; cursor: pointer; line-height: 1; }
.ser-chip .s-del:hover { color: var(--down); }
.studio-note { font-size: 12px; color: var(--faint); line-height: 1.5; }

.studio-main { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 16px 18px; }
.studio-controls { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.chart-host { position: relative; width: 100%; }
svg.studio-chart { display: block; width: 100%; height: 380px; touch-action: none; }
.chart-empty { height: 380px; display: flex; align-items: center; justify-content: center; color: var(--faint); font-family: var(--mono); font-size: 13px; }
.studio-tip { position: absolute; top: 8px; pointer-events: none; opacity: 0; transform: translateX(-50%); z-index: 5;
  background: var(--surface-3); border: 1px solid var(--line-2); border-radius: 8px; padding: 8px 11px; font-size: 12px; white-space: nowrap; box-shadow: 0 8px 24px rgba(0,0,0,.45); transition: opacity .1s; }
.studio-tip .tt-d { font-family: var(--mono); font-size: 10.5px; color: var(--faint); margin-bottom: 5px; }
.studio-tip .tt-r { display: flex; align-items: center; gap: 7px; font-family: var(--mono); font-size: 11.5px; padding: 1px 0; }
.studio-tip .tt-r .dot, .studio-legend .dot { width: 8px; height: 8px; border-radius: 2px; display: inline-block; }
.studio-tip b { color: var(--text); }
.studio-legend { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--line); font-size: 12.5px; }
.lg-item { display: inline-flex; align-items: center; gap: 7px; color: var(--muted); font-family: var(--mono); }
.lg-item b { color: var(--text); font-weight: 500; }

/* per-series metric selector + wrapping controls */
.ser-chip .ser-main { display: flex; flex-direction: column; gap: 4px; flex: 1; min-width: 0; }
.ser-chip .s-id { font-family: var(--mono); font-size: 12.5px; color: var(--text); }
.s-metric { background: var(--bg-2); border: 1px solid var(--line); color: var(--muted); border-radius: var(--r-sm); padding: 3px 6px; font-family: var(--sans); font-size: 11.5px; outline: none; max-width: 100%; }
.s-metric:focus { border-color: var(--accent); }
.studio-controls { row-gap: 8px; }

/* Performance analytics table (Studio) */
.studio-stats { margin-top: 18px; }
.studio-stats:empty { display: none; }
.ss-h { font-family: var(--mono); font-size: 11px; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.ss-h span { color: var(--faint); text-transform: none; letter-spacing: 0; }
.ss-scroll { overflow-x: auto; }
.ss-tbl { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 560px; }
.ss-tbl th { text-align: right; font-family: var(--mono); font-size: 10.5px; font-weight: 500; letter-spacing: .03em;
  text-transform: uppercase; color: var(--faint); padding: 6px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.ss-tbl th:first-child { text-align: left; }
.ss-tbl td { text-align: right; padding: 8px 10px; border-bottom: 1px solid var(--line); font-variant-numeric: tabular-nums; color: var(--text); }
.ss-tbl tr:last-child td { border-bottom: 0; }
.ss-tbl .ss-nm { text-align: left; font-family: var(--mono); font-size: 12.5px; color: var(--text); }
.ss-tbl .ss-nm .dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 7px; vertical-align: middle; }
.ss-tbl td.pos { color: var(--up); }
.ss-tbl td.neg { color: var(--down); }