:root {
  --bg: #f6f2eb;
  --bg-grain: #efe8dc;
  --panel: #ffffff;
  --ink: #1b1a17;
  --ink-soft: #4a463f;
  --rule: #d9d2c4;
  --rule-soft: #ebe5d8;
  --accent: #8b3a1e;
  --accent-soft: #c46b48;
  --slate: #4a5867;
  --ok: #2f6b3a;
  --bad: #9b2c2c;
  --warn: #8a6a17;
  --shadow: 0 1px 0 rgba(27,26,23,.04), 0 8px 24px -16px rgba(27,26,23,.12);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  background:
    radial-gradient(1200px 600px at 80% -10%, #f1e9d8 0%, transparent 60%),
    radial-gradient(800px 400px at -10% 110%, #e9e0cc 0%, transparent 55%),
    var(--bg);
  color: var(--ink);
  min-height: 100vh;
  line-height: 1.45;
  font-size: 14px;
  letter-spacing: 0.005em;
}
.wrap { max-width: 1280px; margin: 0 auto; padding: 32px 28px 80px; }

/* ============================================================
   Project bar — left-floating pills
   ============================================================ */
.project-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
  margin-bottom: 14px;
}
.project-pill {
  display: inline-flex; align-items: center;
  padding: 4px 12px; border: 1px solid var(--rule); border-radius: 999px;
  background: var(--panel); color: var(--ink);
  font-family: 'IBM Plex Sans', sans-serif; font-size: 12.5px; font-weight: 500;
  cursor: pointer; user-select: none;
  transition: border-color .15s, background .15s, color .15s;
  line-height: 1.4;
}
.project-pill:not(.active):hover { border-color: var(--ink-soft); }
.project-pill-name { padding: 0; }
.project-pill.active {
  background: var(--ink); color: #f6f2eb; border-color: var(--ink);
  cursor: default;
  padding-right: 4px;
}

/* Add (+) pill — last in the list */
.project-pill-add {
  border-style: dashed; color: var(--ink-soft);
}
.project-pill-add:hover {
  border-style: solid; border-color: var(--ink); color: var(--ink); background: var(--rule-soft);
}

/* Icon buttons inside the active pill */
.project-pill .proj-icon {
  width: 22px; height: 22px; padding: 0; font-size: 11px; line-height: 1;
  border: 0; background: transparent; cursor: pointer; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  margin-left: 2px;
  transition: opacity .15s, background .15s, color .15s;
  font-family: inherit;
}
.project-pill.active .proj-pen { color: #6da4d6; }
.project-pill.active .proj-pen:hover { background: rgba(255, 255, 255, .12); color: #b6d7f0; }
.project-pill.active .proj-trash { color: #db8c87; font-size: 10.5px; }
.project-pill.active .proj-trash:hover { background: rgba(255, 255, 255, .12); color: #ec9d97; }
.project-pill.active .proj-confirm { color: #b9d8aa; font-size: 12px; font-weight: 700; }
.project-pill.active .proj-confirm:hover { background: rgba(255, 255, 255, .12); color: #d3e4c7; }
.project-pill.active .proj-cancel { color: #d4cdbb; font-size: 11px; }
.project-pill.active .proj-cancel:hover { background: rgba(255, 255, 255, .12); color: #f6f2eb; }

/* Hover-reveal: pen + trash invisible until the user hovers the active pill */
.project-pill.active .proj-pen,
.project-pill.active .proj-trash {
  opacity: 0; pointer-events: none;
}
.project-pill.active:hover .proj-pen,
.project-pill.active:hover .proj-trash {
  opacity: 1; pointer-events: auto;
}

/* Edit-mode swap: hide name + pen + trash, show input + ✓ + ✗ */
.project-pill .project-pill-input,
.project-pill .proj-confirm,
.project-pill .proj-cancel { display: none; }
.project-pill.editing { padding-left: 6px; }
.project-pill.editing .project-pill-name,
.project-pill.editing .proj-pen,
.project-pill.editing .proj-trash { display: none; }
.project-pill.editing .project-pill-input { display: inline-block; }
.project-pill.editing .proj-confirm,
.project-pill.editing .proj-cancel {
  display: inline-flex; opacity: 1; pointer-events: auto;
}

.project-pill-input {
  font-family: 'IBM Plex Sans', sans-serif; font-size: 12.5px; font-weight: 500;
  border: 1px solid rgba(246, 242, 235, 0.4); background: rgba(255, 255, 255, 0.1);
  color: #f6f2eb; padding: 2px 10px; border-radius: 12px;
  outline: none; min-width: 140px;
}
.project-pill-input:focus {
  border-color: rgba(246, 242, 235, 0.85); background: rgba(255, 255, 255, 0.18);
}
.project-pill-input::selection { background: rgba(246, 242, 235, 0.35); }

/* Slide-out delete confirmation: max-height transition, no popups */
.project-delete-confirm {
  max-height: 0; overflow: hidden;
  transition: max-height .25s ease, padding .25s ease, margin-bottom .25s ease;
  background: #f7e6e3; border: 1px solid #d9c5be; border-radius: 4px;
  font-family: 'IBM Plex Sans', sans-serif; font-size: 12.5px;
  color: var(--ink); padding: 0 14px; margin-bottom: 0;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.project-delete-confirm.show {
  max-height: 80px; padding: 12px 14px; margin-bottom: 14px;
}
.project-delete-confirm-actions { display: flex; gap: 8px; flex-shrink: 0; }
.project-delete-confirm-actions button {
  font-family: 'IBM Plex Sans', sans-serif; font-size: 12px; font-weight: 500;
  padding: 6px 12px; border-radius: 2px; cursor: pointer;
  border: 1px solid var(--rule); background: var(--panel); color: var(--ink);
  transition: all .12s;
}
.project-delete-confirm-actions button:hover { border-color: var(--ink-soft); }
.project-delete-confirm-actions button.danger {
  background: var(--bad); color: #fff; border-color: var(--bad);
}
.project-delete-confirm-actions button.danger:hover {
  background: #7d1f1f; border-color: #7d1f1f;
}

/* ============================================================
   Collapse toggle — subtle text+chevron button, upper-left of its area
   ============================================================ */
.collapse-toggle {
  display: inline-flex; align-items: center; gap: 5px;
  margin: 8px 0 4px;
  padding: 0;
  border: 0; background: transparent; box-shadow: none;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px; font-weight: 500;
  color: var(--ink-soft);
  text-transform: uppercase; letter-spacing: 0.12em;
  cursor: pointer;
  transition: color .15s;
}
.collapse-toggle:hover { color: var(--ink); }
.collapse-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 1px;
}
.collapse-chev {
  display: inline-flex; align-items: center; justify-content: center;
  width: 10px; height: 10px;
  font-size: 9px;
  line-height: 1;
}
/* Chevron flips with aria-expanded: ▾ collapsed (click to expand),
   ▴ expanded (click to collapse). */
.collapse-toggle[aria-expanded="false"] .collapse-chev::before { content: '▾'; }
.collapse-toggle[aria-expanded="true"]  .collapse-chev::before { content: '▴'; }

/* Collapsed input area: hide the panels + data actions but leave the toggle
   visible above so the user can re-expand. */
.data-inputs-area.collapsed { display: none; }

/* Export-actions row that lives inside the data-inputs-area, after the
   meta grid. Hidden in lockstep with the inputs when collapsed. */
.data-actions {
  display: flex; gap: 8px; align-items: center; flex-wrap: wrap;
  margin-top: 18px;
}

/* Drag-and-drop visual feedback on input panels */
.panel.drag-over {
  border-color: var(--ink); background: #fcf6e8;
  box-shadow: 0 0 0 2px rgba(139, 58, 30, 0.15);
}
.panel.drag-over .panel-head { background: #f1ebdb; }
.panel.drag-over textarea { background: transparent; }

header {
  padding-bottom: 18px; border-bottom: 1px solid var(--rule); margin-bottom: 28px;
}
h1 {
  font-family: 'IBM Plex Serif', Georgia, serif;
  font-weight: 600; font-size: 30px; line-height: 1.1; margin: 0 0 4px;
  letter-spacing: -0.01em;
}
h1 em { font-style: italic; color: var(--accent); font-weight: 400; }
.sub {
  font-family: 'IBM Plex Mono', monospace; font-size: 11px; color: var(--ink-soft);
  text-transform: uppercase; letter-spacing: 0.14em;
}
.grid-inputs { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 18px; }
@media (max-width: 1100px) { .grid-inputs { grid-template-columns: 1fr 1fr; } }
@media (max-width: 700px) { .grid-inputs { grid-template-columns: 1fr; } }

.panel {
  background: var(--panel); border: 1px solid var(--rule); border-radius: 4px;
  box-shadow: var(--shadow);
}
.panel-head {
  padding: 12px 14px 10px; border-bottom: 1px solid var(--rule-soft);
  display: flex; align-items: baseline; justify-content: space-between; gap: 12px;
}
.panel-title {
  font-family: 'IBM Plex Mono', monospace; font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.16em; color: var(--ink);
}
.panel-title .num { color: var(--accent); margin-right: 8px; }
.panel-hint {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px; color: var(--ink-soft);
  letter-spacing: 0.06em;
}
textarea {
  width: 100%; min-height: 220px; resize: vertical;
  border: 0; padding: 14px;
  font-family: 'IBM Plex Mono', monospace; font-size: 12px; line-height: 1.55;
  background: transparent; color: var(--ink); outline: none;
  tab-size: 22;
}
textarea::placeholder { color: #b0a797; }

.actions {
  margin: 22px 0; display: flex; gap: 8px; flex-wrap: wrap; align-items: center;
}
button {
  font-family: 'IBM Plex Sans', sans-serif; font-weight: 500; font-size: 13px;
  border: 1px solid var(--rule); background: var(--panel); color: var(--ink);
  padding: 9px 14px; border-radius: 3px; cursor: pointer;
  transition: all .12s ease;
  letter-spacing: 0.01em;
}
button:hover { border-color: var(--ink-soft); }
button.primary {
  background: var(--ink); color: #f6f2eb; border-color: var(--ink);
}
button.primary:hover { background: var(--accent); border-color: var(--accent); }
button.ghost { background: transparent; }
button:disabled { opacity: 0.4; cursor: not-allowed; }
.spacer { flex: 1; }

.status {
  font-family: 'IBM Plex Mono', monospace; font-size: 11px; color: var(--ink-soft);
  padding: 8px 12px; background: var(--rule-soft); border-radius: 3px; display: none;
}
.status.show { display: inline-block; }
.status.error { color: var(--bad); background: #f7e6e3; }
.status.ok { color: var(--ok); }

.results { margin-top: 28px; }
.results-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 10px; gap: 18px; flex-wrap: wrap;
}
.results-head-left { display: flex; flex-direction: column; gap: 2px; }
.results-title {
  font-family: 'IBM Plex Serif', Georgia, serif; font-size: 18px; font-weight: 600;
}
.results-meta {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-soft);
}
.pivot-copy-btn {
  flex-shrink: 0;
  width: 26px; height: 26px;
  border: 1px solid transparent; background: transparent;
  border-radius: 3px; cursor: pointer;
  color: var(--ink-soft);
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0; margin-top: 2px;
  transition: color .12s, background .12s, border-color .12s;
}
.pivot-copy-btn:hover {
  color: var(--ink); background: #f0e6cf; border-color: var(--rule);
}
.pivot-copy-btn.copied {
  color: var(--accent); border-color: var(--accent);
  background: #fdfaf3;
}
.pivot-copy-btn svg { display: block; }
.results-head-filter-btn {
  /* Reset the wide-bar margin from .collapse-toggle so it sits compactly
     between the column toggles and the copy button. */
  margin: 6px 0 0;
  padding: 4px 8px;
  border: 1px solid var(--rule); border-radius: 3px;
  background: #fdfaf3;
  flex-shrink: 0;
}
.results-head-filter-btn:hover { background: #f0e6cf; }
.col-toggles {
  display: flex; gap: 14px; align-items: center; flex-wrap: wrap;
  padding: 8px 12px; background: var(--panel); border: 1px solid var(--rule);
  border-radius: 3px; box-shadow: var(--shadow);
}
.col-toggles-section { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.col-toggles-divider {
  width: 1px; height: 18px; background: var(--rule);
  display: inline-block; margin: 0 2px;
}
.col-toggles-label {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-soft);
  margin-right: 2px;
}
.tog {
  display: inline-flex; align-items: center; gap: 6px; cursor: pointer;
  font-size: 12.5px; user-select: none; color: var(--ink);
}
.tog input { position: absolute; opacity: 0; pointer-events: none; }
.tog-box {
  width: 14px; height: 14px; border: 1px solid var(--ink-soft); border-radius: 2px;
  background: #fff; display: inline-block; position: relative; flex-shrink: 0;
  transition: all .12s;
}
.tog input:checked + .tog-box { background: var(--ink); border-color: var(--ink); }
.tog input:checked + .tog-box::after {
  content: ''; position: absolute; left: 3px; top: 0px;
  width: 4px; height: 8px; border: solid #f6f2eb;
  border-width: 0 1.5px 1.5px 0; transform: rotate(45deg);
}
.tog input:disabled ~ .tog-box { background: #ece6d8; border-color: var(--rule); }
.tog input:disabled:checked + .tog-box { background: #b5ad9c; border-color: #b5ad9c; }
.tog:has(input:disabled) { color: #a89f8d; cursor: not-allowed; }
.tog-radio { border-radius: 50%; }
.tog input[type="radio"]:checked + .tog-box::after {
  content: ''; position: absolute; left: 3px; top: 3px;
  width: 6px; height: 6px; border-radius: 50%; background: #f6f2eb;
  border: none; transform: none;
}

/* Plot panel */
.plot-section {
  margin-top: 28px; border: 1px solid var(--rule); border-radius: 4px;
  background: var(--panel); box-shadow: var(--shadow);
}
.plot-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: 1px solid var(--rule); gap: 12px; flex-wrap: wrap;
}
.plot-head-left { display: flex; flex-direction: column; gap: 2px; }
.plot-title {
  font-family: 'IBM Plex Serif', Georgia, serif; font-size: 16px; font-weight: 600;
}
.plot-meta {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-soft);
}
.plot-controls { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.plot-body {
  display: grid; grid-template-columns: 200px 1fr 220px; gap: 16px;
  padding: 16px;
}
@media (max-width: 1100px) {
  .plot-body { grid-template-columns: 1fr; }
}
.plot-options {
  display: flex; flex-direction: column; gap: 10px;
  padding: 12px; background: #fcf9f1; border: 1px solid var(--rule); border-radius: 3px;
  align-self: start;
}
.plot-opt-row { display: flex; flex-direction: column; gap: 4px; }
.plot-opt-lbl {
  font-family: 'IBM Plex Mono', monospace; font-size: 9.5px;
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-soft);
}
.plot-sel, .plot-num {
  padding: 5px 8px; font-family: 'IBM Plex Sans', sans-serif; font-size: 12.5px;
  border: 1px solid var(--rule); background: #fdfaf3; border-radius: 2px; outline: none;
  color: var(--ink); width: 100%;
}
.plot-sel:focus, .plot-num:focus { border-color: var(--ink); background: #fff; }
.plot-canvas-wrap {
  display: flex; flex-direction: column; gap: 10px; min-width: 0;
}
.plot-canvas {
  background: #fdfaf3; border: 1px solid var(--rule); border-radius: 3px;
  min-height: 380px; display: flex; align-items: center; justify-content: center;
  color: var(--ink-soft); font-style: italic; font-size: 12px;
  overflow: hidden;
}
.plot-canvas svg { display: block; max-width: 100%; height: auto; }
.plot-legend {
  display: flex; flex-wrap: wrap; gap: 6px 14px;
  font-size: 11.5px; padding: 0 4px; min-height: 18px;
}
.plot-legend-item { display: inline-flex; align-items: center; gap: 5px; }
.plot-legend-swatch {
  display: inline-flex; align-items: center; justify-content: center;
  width: 14px; height: 14px; line-height: 0;
}
.plot-legend-swatch svg { display: block; }
.plot-legend-swatch-clickable { cursor: pointer; border-radius: 50%; transition: transform .12s, background .12s; }
.plot-legend-swatch-clickable:hover { transform: scale(1.18); background: rgba(0,0,0,0.04); }
.plot-legend-shape svg { width: 14px; height: 14px; }
.plot-legend-shape-icon { display: inline-flex; cursor: pointer; padding: 1px; border-radius: 2px; line-height: 0; }
.plot-legend-shape-icon:hover { background: var(--cream-soft, #f1eadb); }
.plot-legend-label { cursor: pointer; }
.plot-legend-label:hover { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 2px; }
.plot-legend-item.hidden .plot-legend-swatch,
.plot-legend-item.hidden .plot-legend-shape-icon { opacity: 0.35; }
.plot-legend-item.hidden .plot-legend-label { color: var(--ink-soft); text-decoration: line-through; }
.plot-legend-reg {
  flex-basis: 100%; display: flex; flex-direction: column; gap: 1px; padding: 3px 0;
}
.plot-legend-reg-head { display: flex; align-items: center; gap: 6px; }
.plot-legend-reg-swatch {
  width: 18px; height: 3px; border-radius: 1px; cursor: pointer;
  outline: 1px solid transparent; transition: outline-color .12s, transform .12s;
  flex-shrink: 0;
}
.plot-legend-reg-swatch:hover { outline-color: var(--ink-soft); transform: scaleY(2); }
.plot-legend-reg-name { font-weight: 600; cursor: pointer; }
.plot-legend-reg-name:hover { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.plot-legend-reg-eq {
  font-family: 'IBM Plex Mono', monospace; font-size: 10.5px;
  color: var(--ink); padding-left: 24px; cursor: pointer;
}
.plot-legend-reg.hidden .plot-legend-reg-swatch { opacity: 0.35; }
.plot-legend-reg.hidden .plot-legend-reg-name,
.plot-legend-reg.hidden .plot-legend-reg-eq { color: var(--ink-soft); text-decoration: line-through; }

/* Color / shape picker popovers */
.style-picker {
  background: var(--cream, #faf6ec);
  border: 1px solid var(--ink-soft, #7c7461);
  border-radius: 4px;
  padding: 6px;
  box-shadow: 0 4px 14px rgba(58, 53, 40, 0.18);
  display: flex; flex-direction: column; gap: 6px;
}
.style-picker-grid {
  display: grid; gap: 4px;
}
.style-picker-grid-color { grid-template-columns: repeat(5, 18px); }
.style-picker-grid-shape { grid-template-columns: repeat(6, 22px); }
.style-picker-color-cell {
  width: 18px; height: 18px; border-radius: 3px;
  /* Background + border-color set inline to the preset hex (transparent fill,
     solid outline) so the picker swatch matches the plot-point styling. */
  border: 1.5px solid transparent; padding: 0; cursor: pointer;
}
.style-picker-color-cell:hover { transform: scale(1.12); }
.style-picker-color-cell.active { box-shadow: 0 0 0 2px var(--ink, #3a3528); }
.style-picker-shape-cell {
  width: 22px; height: 22px; padding: 0; cursor: pointer;
  background: transparent; border: 1px solid transparent; border-radius: 3px;
  display: inline-flex; align-items: center; justify-content: center;
}
.style-picker-shape-cell:hover { border-color: var(--ink-soft, #7c7461); background: rgba(255,255,255,0.4); }
.style-picker-shape-cell.active { border-color: var(--ink, #3a3528); background: rgba(255,255,255,0.6); }
.style-picker-reset {
  font-size: 11px; padding: 3px 6px; cursor: pointer;
  background: transparent; border: 1px solid var(--ink-soft, #7c7461);
  border-radius: 3px; color: var(--ink, #3a3528);
}
.style-picker-reset:hover { background: var(--ink, #3a3528); color: var(--cream, #faf6ec); }

/* SHF color-bar legend */
.shf-legend-wrap {
  display: inline-flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.shf-legend-title {
  font-family: 'IBM Plex Mono', monospace; font-size: 9.5px;
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-soft);
  margin-right: 4px;
}
.shf-legend-num {
  font-family: 'IBM Plex Mono', monospace; font-size: 10.5px;
  color: var(--ink); min-width: 36px;
}
.shf-legend-num:first-of-type { text-align: right; }
.shf-legend-bar {
  display: inline-flex; height: 12px; border: 1px solid var(--rule);
  border-radius: 2px; overflow: hidden;
}
.shf-legend-bar > span {
  display: inline-block; width: 6px; height: 100%;
}
.shf-fn-list {
  display: flex; flex-direction: column; gap: 4px; margin-top: 4px;
}
.shf-fn-empty {
  font-size: 10.5px; color: var(--ink-soft); font-style: italic;
  padding: 8px 4px; text-align: center;
}
.shf-fn-pill {
  display: flex; align-items: center; gap: 7px;
  padding: 5px 8px; border: 1px solid var(--rule);
  background: #fdfaf3; border-radius: 3px;
  font-size: 11.5px; cursor: pointer; user-select: none;
}
.shf-fn-pill:hover { background: #f5eed9; }
.shf-fn-pill.active {
  background: #f1ebdb; border-color: #5a5142;
  box-shadow: inset 0 0 0 1px #5a5142;
}
.shf-fn-pill.hidden { opacity: 0.45; }
.shf-fn-swatch {
  width: 14px; height: 3px; border-radius: 1px; flex-shrink: 0;
}
.shf-fn-name {
  flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.shf-fn-icon {
  width: 18px; height: 18px; border: none; background: transparent;
  cursor: pointer; padding: 0; color: var(--ink-soft); font-size: 12px;
  display: flex; align-items: center; justify-content: center; border-radius: 2px;
}
.shf-fn-icon:hover { background: #ece6d8; color: var(--ink); }
.shf-fn-editor {
  margin-top: 14px; padding: 10px 14px; border: 1px solid var(--rule);
  background: #fcf9f1; border-radius: 3px;
  display: flex; flex-direction: column; gap: 8px;
}
.shf-fn-topbar {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.shf-fn-name-input {
  flex: 1; min-width: 220px;
  font-family: 'IBM Plex Sans', sans-serif; font-size: 13px; font-weight: 500;
  padding: 3px 8px; border: 1px solid var(--rule); background: #fff;
  border-radius: 2px; outline: none; color: var(--ink);
}
.shf-fn-name-input:focus { border-color: var(--ink); }
/* Override the cross-plot's full-width .plot-reg-btn — the SHF action
 * row hosts the button inline with toggles and the R² stats, so the
 * button needs to hug its own label. */
.shf-fn-toggles .plot-reg-btn {
  width: auto; padding: 4px 12px; font-size: 11px;
}
.shf-fn-const-head-wrap {
  display: flex; align-items: center; gap: 6px;
}
.shf-fn-const-head-wrap .shf-fn-const-head { flex: 1; }
.shf-fn-lock {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px;
  border: none; background: transparent; cursor: pointer;
  padding: 0; border-radius: 2px;
  color: var(--ink-soft);
}
.shf-fn-lock:hover { background: #ece6d8; color: var(--ink); }
.shf-fn-lock.open { color: var(--ink); }
.shf-fn-lock svg { display: block; }
.shf-fn-method-row {
  display: flex; align-items: center; gap: 6px;
  font-size: 11px; font-family: 'IBM Plex Mono', monospace;
}
.shf-fn-method-lbl {
  color: var(--ink-soft); margin-right: 2px; flex-shrink: 0;
}
.shf-fn-method-opt {
  display: flex; align-items: center; gap: 4px; cursor: pointer;
  padding: 3px 7px; border: 1px solid var(--rule); border-radius: 2px;
  background: #fdfaf3; color: var(--ink-soft);
}
.shf-fn-method-opt input { margin: 0; }
.shf-fn-method-opt.active { color: var(--ink); border-color: var(--ink); background: #fff; }
.shf-fn-sliders { display: flex; flex-direction: column; gap: 4px; }
.shf-fn-sliders {
  min-width: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) minmax(0, 1fr);
  gap: 3px 24px; align-items: center;
}
.shf-fn-coef-row-lbl {
  font-family: 'IBM Plex Sans', sans-serif; font-size: 11px;
  font-weight: 500; color: var(--ink-soft);
  padding-right: 6px; white-space: nowrap;
}
.shf-fn-slider-row {
  display: grid; grid-template-columns: 24px minmax(0, 1fr) 88px;
  gap: 8px; align-items: center; min-width: 0;
}
.shf-fn-slider-lbl {
  font-family: 'IBM Plex Mono', monospace; font-size: 11px;
  color: var(--ink); text-align: right;
}
.shf-fn-slider {
  -webkit-appearance: none; appearance: none;
  width: 100%; min-width: 0; max-width: 100%;
  height: 3px; background: var(--rule); border-radius: 2px; outline: none;
  cursor: pointer; padding: 0; margin: 0;
}
.shf-fn-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 12px; height: 12px; background: var(--ink);
  border-radius: 50%; cursor: pointer;
}
.shf-fn-slider::-moz-range-thumb {
  width: 12px; height: 12px; background: var(--ink);
  border-radius: 50%; cursor: pointer; border: none;
}
.shf-fn-slider:disabled { cursor: not-allowed; }
.shf-fn-slider:disabled::-webkit-slider-thumb { background: var(--ink-soft); cursor: not-allowed; }
.shf-fn-slider:disabled::-moz-range-thumb { background: var(--ink-soft); cursor: not-allowed; }
.shf-fn-num:read-only, .shf-fn-const-input:read-only {
  cursor: default; color: var(--ink-soft);
}
.shf-fn-num:read-only:hover, .shf-fn-const-input:read-only:hover {
  border-bottom-color: transparent;
}
.shf-fn-method-opt.readonly { cursor: not-allowed; opacity: 0.7; }
.shf-fn-method-opt.readonly input { cursor: not-allowed; }
.shf-fn-pill-lock { color: var(--ink-soft); }
.shf-fn-pill-lock.locked { color: var(--ink); }
/* Subtle inline number editor — no box, no border, no background. A
 * faint underline appears on hover/focus to hint at editability. The
 * native spinner buttons are hidden so they don't eat horizontal space
 * (which was causing the trailing digits to clip). */
.shf-fn-num, .shf-fn-const-input {
  font-family: 'IBM Plex Mono', monospace; font-size: 11px;
  padding: 2px 2px;
  border: none; background: transparent;
  border-bottom: 1px solid transparent;
  outline: none; color: var(--ink);
  width: 100%; min-width: 0; box-sizing: border-box;
  text-align: left;
  transition: border-color .12s;
  -moz-appearance: textfield;
}
.shf-fn-num::-webkit-outer-spin-button,
.shf-fn-num::-webkit-inner-spin-button,
.shf-fn-const-input::-webkit-outer-spin-button,
.shf-fn-const-input::-webkit-inner-spin-button {
  -webkit-appearance: none; margin: 0;
}
.shf-fn-num:hover, .shf-fn-const-input:hover {
  border-bottom-color: var(--rule);
}
.shf-fn-num:focus, .shf-fn-const-input:focus {
  border-bottom-color: var(--ink);
}
.shf-fn-toggles {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 8px 12px; align-items: center;
  margin-top: 2px;
}
.shf-fn-toggles > * { min-width: 0; }
.shf-fn-fit-row {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.shf-fn-fit-row .plot-reg-btn { flex-shrink: 0; }
.shf-fn-fit-row .shf-fn-editor-stats { flex-shrink: 0; min-width: 0; }
.shf-fn-algo-sel {
  font-family: 'IBM Plex Sans', sans-serif; font-size: 11px;
  padding: 3px 6px; border: 1px solid var(--rule); background: #fdfaf3;
  border-radius: 2px; outline: none; color: var(--ink); cursor: pointer;
}
.shf-fn-algo-sel:hover { border-color: var(--ink); }
.shf-fn-algo-sel:disabled { cursor: not-allowed; opacity: 0.6; }
.shf-fn-bias-group {
  display: flex; align-items: center; gap: 8px;
  margin-left: auto;
}
.shf-fn-bias-lbl {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--ink-soft); white-space: nowrap;
}
.shf-fn-bias-slider { width: 110px; }
.shf-fn-bias-val {
  font-family: 'IBM Plex Mono', monospace; font-size: 10.5px;
  color: var(--ink); min-width: 22px; text-align: right;
}
.pivot-filters {
  margin-top: 12px;
  /* Stretch full-width below the table; .plot-filters defaults to a
   * sidebar column inside plot-body. */
  max-height: none;
  align-self: stretch;
}
.shf-line-range {
  display: flex; align-items: center; gap: 4px; min-width: 0;
}
.shf-line-range .plot-num { min-width: 0; flex: 1 1 0; padding-left: 4px; padding-right: 4px; }
.shf-line-range-sep { color: var(--ink-soft); font-size: 11px; }
.shf-fn-rand-toggle {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.06em;
  padding: 4px 10px; border: 1px solid var(--rule);
  background: #fdfaf3; color: var(--ink-soft); cursor: pointer;
  border-radius: 2px; flex-shrink: 0; white-space: nowrap;
  transition: background .12s, color .12s, border-color .12s;
}
.shf-fn-rand-toggle:hover { background: #f0e6cf; color: var(--ink); }
.shf-fn-rand-toggle.on {
  color: var(--ink); border-color: var(--ink); background: #f1ebdb;
}
/* The earlier override that made .plot-reg-btn auto-width inside the
 * combined toggles row needs to apply on the fit row now too. */
.shf-fn-fit-row .plot-reg-btn,
.shf-fn-toggles .plot-reg-btn {
  width: auto; padding: 4px 12px; font-size: 11px;
}
.shf-fn-const-head {
  width: 100%;
  font-family: 'IBM Plex Mono', monospace; font-size: 10.5px;
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 5px 10px;
  border: 1px solid var(--rule); background: #fdfaf3;
  color: var(--ink-soft); cursor: pointer; border-radius: 2px;
  text-align: left;
}
.shf-fn-const-head:hover { background: #f0e6cf; color: var(--ink); }
.shf-fn-const-head.open {
  color: var(--ink); border-color: var(--ink); background: #f1ebdb;
}
.shf-fn-constants {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 4px 24px;
  padding: 4px 0;
}
.shf-fn-const-row {
  display: grid; grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px; align-items: baseline;
  font-family: 'IBM Plex Mono', monospace; font-size: 11px;
}
.shf-fn-const-val {
  color: var(--ink); text-align: left;
  padding-left: 2px;
}
.shf-fn-const-lbl {
  color: var(--ink-soft);
}
.shf-fn-equations {
  padding: 4px 8px;
}
.shf-fn-equations-pre {
  font-family: 'IBM Plex Mono', monospace; font-size: 10.5px;
  line-height: 1.45; color: var(--ink);
  margin: 0; padding: 6px 8px;
  background: #fdfaf3; border: 1px solid var(--rule); border-radius: 3px;
  white-space: pre-wrap; word-break: break-word;
}
.shf-fn-editor-stats {
  font-size: 10.5px; line-height: 1.35; color: var(--ink-soft);
  font-style: italic; padding: 0;
}
.shf-legend-barwrap {
  position: relative; display: inline-block; vertical-align: middle;
}
.shf-legend-tick {
  position: absolute; top: -3px; bottom: -3px;
  width: 2px;
  background: rgba(40, 38, 32, 0.92);
  pointer-events: none;
  transform: translateX(-1px);
  border-radius: 1px;
  box-shadow: 0 0 0 0.5px rgba(255, 255, 255, 0.5);
}
.shf-tooltip {
  position: absolute; pointer-events: none;
  display: none;
  padding: 7px 10px;
  font-family: 'IBM Plex Mono', monospace; font-size: 11px; line-height: 1.45;
  background: rgba(40, 38, 32, 0.96); color: #f5efdf;
  border: 1px solid rgba(255, 255, 255, 0.12); border-radius: 3px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
  transform: translate(10px, 10px);
  z-index: 20;
  min-width: 240px;
}
.shf-tooltip .tt-name {
  font-family: 'IBM Plex Sans', sans-serif; font-weight: 600; font-size: 12px;
  margin-bottom: 6px; color: #fdf7e3;
}
.shf-tooltip .tt-grid {
  display: grid;
  grid-template-columns: max-content auto max-content auto;
  column-gap: 14px; row-gap: 2px;
  align-items: baseline;
}
.shf-tooltip .tt-k { color: #c4b89a; }
.shf-tooltip .tt-v { color: #f5efdf; text-align: right; padding-right: 4px; }
.plot-filters {
  display: flex; flex-direction: column; gap: 12px;
  padding: 12px; background: #fcf9f1; border: 1px solid var(--rule); border-radius: 3px;
  align-self: start; max-height: 480px; overflow-y: auto;
}
.plot-filter-head {
  font-family: 'IBM Plex Mono', monospace; font-size: 9.5px;
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-soft);
  margin-bottom: 6px;
}
.plot-filter-chips { display: flex; flex-wrap: wrap; gap: 4px; }
.plot-export-block {
  display: flex; flex-direction: column; gap: 6px;
  padding-top: 6px; border-top: 1px dashed var(--rule);
}
.plot-export-btn {
  font-family: 'IBM Plex Sans', sans-serif; font-size: 11.5px;
  padding: 5px 10px; cursor: pointer;
  background: #fdfaf3; color: var(--ink);
  border: 1px solid var(--rule); border-radius: 3px;
  text-align: center;
  transition: background .12s, border-color .12s, color .12s;
}
.plot-export-btn:hover { background: var(--ink); color: #f6f2eb; border-color: var(--ink); }
.plot-export-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.plot-chip {
  display: inline-block; padding: 3px 9px; font-size: 11.5px;
  border: 1px solid var(--rule); background: #fdfaf3; color: var(--ink);
  border-radius: 12px; cursor: pointer; user-select: none; line-height: 1.3;
  transition: all .12s;
}
.plot-chip:hover { background: #f5eed9; }
.plot-chip.active {
  background: var(--ink); color: #f6f2eb; border-color: var(--ink);
}
.plot-show-btn {
  display: inline-flex; align-items: center; gap: 6px;
}

/* Regression UI */
.plot-regressions {
  margin-top: 6px; padding-top: 10px;
  border-top: 1px dashed var(--rule);
  display: flex; flex-direction: column; gap: 8px;
}
.plot-regressions-head {
  font-family: 'IBM Plex Mono', monospace; font-size: 9.5px;
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-soft);
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
}
.plot-reg-deselect-btn {
  border: 1px solid var(--rule); background: #fdfaf3;
  font-family: 'IBM Plex Mono', monospace; font-size: 9.5px;
  text-transform: lowercase; letter-spacing: 0.05em;
  padding: 2px 7px; border-radius: 2px; cursor: pointer;
  color: var(--ink-soft);
}
.plot-reg-deselect-btn:hover { background: #f0e6cf; color: var(--ink); }
.plot-reg-mode-hint {
  font-size: 10.5px; line-height: 1.35; color: var(--ink-soft);
  font-style: italic; padding: 0 2px;
}
.plot-reg-mode-hint.editing {
  color: var(--accent); font-style: normal; font-weight: 500;
}
.plot-reg-list { display: flex; flex-direction: column; gap: 4px; }
.plot-reg-item {
  display: flex; align-items: center; gap: 6px;
  padding: 5px 7px; border: 1px solid var(--rule);
  background: #fdfaf3; border-radius: 3px;
  font-size: 11.5px; cursor: pointer; user-select: none;
}
.plot-reg-item:hover { background: #f5eed9; }
.plot-reg-item.active {
  background: #f1ebdb; border-color: #5a5142;
  box-shadow: inset 0 0 0 1px #5a5142;
}
.plot-reg-swatch {
  width: 14px; height: 3px; border-radius: 1px; flex-shrink: 0;
}
.plot-reg-name {
  flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.plot-reg-degree {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px; color: var(--ink-soft);
}
.plot-reg-icon-btn {
  width: 18px; height: 18px; border: none; background: transparent;
  cursor: pointer; padding: 0; color: var(--ink-soft); font-size: 13px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 2px;
}
.plot-reg-icon-btn:hover { background: #ece6d8; color: var(--ink); }
.plot-reg-item.disabled { opacity: 0.45; }
.plot-reg-item.disabled .plot-reg-swatch { opacity: 0.4; }
.plot-reg-add {
  display: flex; flex-direction: column; gap: 8px;
  padding-top: 4px;
}
.plot-reg-btn {
  padding: 6px 10px; font-family: 'IBM Plex Sans', sans-serif; font-size: 12px;
  border: 1px solid var(--rule); background: #fdfaf3; cursor: pointer;
  border-radius: 2px; color: var(--ink); width: 100%;
}
.plot-reg-btn:hover { background: #f0e6cf; border-color: var(--ink); }
.plot-reg-btn:disabled { opacity: 0.45; cursor: not-allowed; }
/* Active regression detail: landscape strip below the plot canvas + legend.
   Always present in the DOM but collapses to zero height (no padding/border)
   when no regression is active, so there's no residual block. The .open class
   controls open/closed; max-height + opacity + spacing all animate together. */
.plot-reg-active-detail {
  background: #fdfaf3; border: 1px solid var(--rule); border-radius: 3px;
  display: grid; grid-template-columns: 1fr;
  /* Closed state */
  max-height: 0; opacity: 0;
  padding: 0 14px; gap: 0; margin-top: 0; border-width: 0;
  overflow: hidden;
  transition:
    max-height 0.28s ease,
    opacity 0.22s ease,
    padding 0.28s ease,
    gap 0.28s ease,
    margin-top 0.28s ease,
    border-width 0.28s ease;
}
.plot-reg-active-detail.open {
  max-height: 1200px; opacity: 1;
  padding: 12px 14px; gap: 10px; margin-top: 4px; border-width: 1px;
}
.reg-detail-head {
  display: flex; align-items: center; gap: 8px;
  padding-bottom: 8px; border-bottom: 1px solid var(--rule);
}
.reg-detail-swatch {
  width: 18px; height: 4px; border-radius: 1.5px; flex-shrink: 0;
}
.reg-detail-head-txt {
  font-family: 'IBM Plex Serif', Georgia, serif;
  font-size: 14px; font-weight: 600; color: var(--ink);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.reg-detail-stats {
  display: flex; flex-wrap: wrap; align-items: baseline;
  column-gap: 14px; row-gap: 2px;
  flex-shrink: 0;
}
.reg-detail-stat {
  display: inline-flex; align-items: baseline; gap: 4px;
}
.reg-detail-stat-lbl {
  font-family: 'IBM Plex Mono', monospace; font-size: 9px;
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-soft);
}
.reg-detail-stat-val {
  font-family: 'IBM Plex Mono', monospace; font-size: 11.5px;
  color: var(--ink); font-weight: 500;
}
.reg-detail-eq-row {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
}
.reg-detail-eq {
  flex: 1 1 320px; min-width: 0;
  font-family: 'IBM Plex Mono', monospace; font-size: 11px;
  line-height: 1.45; color: var(--ink); padding: 6px 9px;
  background: #f6f0e0; border: 1px solid var(--rule); border-radius: 2px;
  word-break: break-word; user-select: text;
}
.reg-detail-section-head {
  font-family: 'IBM Plex Mono', monospace; font-size: 9.5px;
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-soft);
  padding-top: 2px;
}
.reg-detail-filt-head {
  display: flex; align-items: center; gap: 10px;
}
.reg-detail-coefs {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px;
}
.reg-detail-coef-cell {
  display: inline-flex; align-items: center; gap: 5px;
  flex: 1 1 140px; min-width: 0;
}
.reg-detail-coef-lbl {
  font-family: 'IBM Plex Mono', monospace; font-size: 10.5px;
  color: var(--ink-soft); flex-shrink: 0;
}
.reg-detail-coef-inp {
  flex: 1 1 auto; min-width: 0;
  text-align: right; font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
}
.reg-detail-coef-inp:disabled {
  background: #f1eadb; color: var(--ink-soft); cursor: not-allowed;
}
.reg-detail-lock-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 24px;
  margin-left: auto; padding: 0; cursor: pointer;
  background: transparent; border: 1px solid var(--rule);
  border-radius: 3px; color: var(--ink);
}
.reg-detail-lock-btn:hover { border-color: var(--ink-soft); background: #fff; }
.reg-detail-lock-btn.unlocked { border-color: var(--ink); color: var(--ink); background: #f1eadb; }
.reg-detail-reset-btn {
  font-family: 'IBM Plex Sans', sans-serif; font-size: 11px;
  padding: 3px 10px; height: 24px; cursor: pointer;
  background: transparent; color: var(--ink);
  border: 1px solid var(--rule); border-radius: 3px;
}
.reg-detail-reset-btn:hover:not(:disabled) {
  background: var(--ink); color: #f6f2eb; border-color: var(--ink);
}
.reg-detail-reset-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.reg-detail-apply {
  font-family: 'IBM Plex Sans', sans-serif; font-size: 10.5px;
  padding: 2px 9px; cursor: pointer;
  background: transparent; color: var(--ink);
  border: 1px solid var(--rule); border-radius: 3px;
  text-transform: none; letter-spacing: 0; line-height: 1.4;
}
.reg-detail-apply:hover { background: var(--ink); color: #f6f2eb; border-color: var(--ink); }
.reg-detail-filters {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px 18px;
}
@media (max-width: 720px) {
  .reg-detail-filters { grid-template-columns: 1fr; }
}
.reg-detail-filt-row {
  display: flex; flex-direction: column; gap: 4px;
  min-width: 0;
}
.reg-detail-filt-lbl {
  font-family: 'IBM Plex Mono', monospace; font-size: 9.5px;
  text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-soft);
  font-weight: 500;
}
.reg-detail-filt-vals {
  display: flex; flex-wrap: wrap; gap: 3px;
}
.reg-detail-filt-tag {
  display: inline-block; padding: 2px 8px; font-size: 11px;
  border: 1px solid var(--rule); background: #fff;
  border-radius: 9px; line-height: 1.4;
  font-family: 'IBM Plex Sans', sans-serif;
}
.reg-detail-filt-none {
  font-size: 11px; color: var(--ink-soft); font-style: italic;
}
.table-scroll {
  overflow: auto; border: 1px solid var(--rule); border-radius: 4px;
  background: var(--panel); box-shadow: var(--shadow);
  max-height: 70vh;
}
table { border-collapse: collapse; width: 100%; font-size: 12px; }
th, td {
  padding: 7px 12px; text-align: right; white-space: nowrap;
  border-bottom: 1px solid var(--rule-soft);
  font-family: 'IBM Plex Mono', monospace;
}
th {
  position: sticky; top: 0; z-index: 2;
  background: #efe8dc; color: var(--ink);
  font-weight: 600; font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  border-bottom: 1.5px solid var(--ink);
}
th.well-h, td.well-c { text-align: left; position: sticky; left: 0; background: var(--panel); z-index: 1; }
th.well-h { z-index: 3; background: #efe8dc; }
th.zone-h, td.zone-c { text-align: left; }
td.well-c { font-weight: 500; }
tbody tr:hover td { background: #faf6ec; }
tbody tr:hover td.well-c { background: #faf6ec; }
.group-divider td { border-top: 1.5px solid var(--rule); }
.totals-row td {
  background: #f3ecdb !important; font-weight: 600;
  border-top: 1.5px solid var(--ink);
}
.frac-cell { color: var(--ink-soft); }
.frac-cell.full { color: var(--accent); font-weight: 600; }
.num-cell.zero { color: #c4bba8; }
.n-cell { color: var(--ink-soft); font-size: 11px; }
.stat-cell { font-variant-numeric: tabular-nums; }
.por-empty { color: #c4bba8; font-style: italic; }

/* Hierarchical 3-group rendering: collapsible per-facies child rows */
tr.zone-parent-row.has-children { cursor: pointer; }
tr.zone-parent-row.has-children td.zone-c { font-weight: 500; }
tr.zone-parent-row.has-children:hover td { background: #f5eed9; }
tr.zone-parent-row.has-children:hover td.well-c { background: #f5eed9; }
tr.zone-parent-row .zone-caret {
  display: inline-block; width: 12px;
  color: var(--accent); font-size: 10px;
  transition: transform .15s ease;
  margin-right: 4px;
  user-select: none;
}
tr.zone-parent-row.expanded .zone-caret { transform: rotate(90deg); }

tr.facies-child-row.collapsed { display: none; }
tr.facies-child-row td { background: #fbf6e8; }
tr.facies-child-row td.well-c { background: #fbf6e8; }
tr.facies-child-row:hover td { background: #f5eed9; }
tr.facies-child-row:hover td.well-c { background: #f5eed9; }
tr.facies-child-row td.zone-c.facies-child-cell {
  padding-left: 28px;
  font-style: italic;
  color: var(--ink-soft);
  position: relative;
}
/* Subtle left rule on the leftmost cell to mark the group span */
tr.facies-child-row td:first-child {
  border-left: 3px solid var(--accent-soft);
}

/* Base/closing row: the deepest top per well, no thickness */
.base-row td { background: #f9f4e7 !important; color: var(--slate); font-style: italic; border-top: 1px dashed var(--rule); }
.base-row td.zone-c { font-weight: 500; }
.base-row td.well-c { background: #f9f4e7; }
tbody tr.base-row:hover td { background: #f5eed9 !important; }

/* Column-group separators: a subtle vertical rule before each new group */
th.group-start, td.group-start { border-left: 1px solid var(--rule); }

th.fac-h { padding: 6px 12px; line-height: 1.25; }
th.fac-h .fac-label { display: block; font-size: 10.5px; text-transform: none; letter-spacing: 0; font-weight: 600; }
th.fac-h .fac-meta { display: block; font-size: 9.5px; color: var(--ink-soft); font-weight: 500; letter-spacing: 0.08em; margin-top: 2px; opacity: 0.55; }
th.group-title-h {
  text-align: center; padding: 4px 12px 5px;
  font-family: 'IBM Plex Mono', monospace; font-size: 9.5px;
  text-transform: uppercase; letter-spacing: 0.14em; font-weight: 500;
  color: var(--ink-soft); background: #f1ebdb;
  border-bottom: 1px solid var(--rule);
}
th.n-h {
  font-family: 'IBM Plex Mono', monospace; font-size: 10.5px;
  text-transform: lowercase; font-weight: 500; color: var(--ink-soft);
  font-style: italic;
}

.grid-meta { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; margin-top: 18px; }
@media (max-width: 900px) { .grid-meta { grid-template-columns: 1fr; } }
.kv-grid {
  padding: 4px 14px 12px; max-height: 280px; overflow-y: auto;
}
.kv-row {
  display: grid; grid-template-columns: minmax(80px, max-content) 1fr; gap: 12px;
  align-items: center; padding: 5px 0; border-bottom: 1px dashed var(--rule-soft);
}
.kv-row:last-child { border-bottom: 0; }
.kv-key {
  font-family: 'IBM Plex Mono', monospace; font-size: 11.5px; font-weight: 500;
  color: var(--ink); padding-left: 4px; white-space: nowrap;
}
.kv-key .accent { color: var(--accent); margin-right: 4px; }
.kv-input {
  font-family: 'IBM Plex Sans', sans-serif; font-size: 12.5px;
  padding: 6px 9px; border: 1px solid var(--rule); background: #fdfaf3;
  border-radius: 2px; outline: none; transition: border-color .12s, background .12s;
  width: 100%; color: var(--ink);
}
.kv-input:focus { border-color: var(--ink); background: #fff; }
.kv-input::placeholder { color: #b0a797; font-style: italic; }
.kv-empty {
  padding: 18px 4px; color: var(--ink-soft);
  font-family: 'IBM Plex Mono', monospace; font-size: 11px;
  text-align: center; font-style: italic; line-height: 1.6;
}

/* Test panel */
.tests {
  margin-top: 24px; padding: 16px 18px; border: 1px solid var(--rule);
  background: var(--panel); border-radius: 4px;
}
.tests h3 {
  font-family: 'IBM Plex Mono', monospace; font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.16em; margin: 0 0 12px;
  display: flex; align-items: baseline; justify-content: space-between;
}
.test-summary { font-size: 11px; color: var(--ink-soft); }
.test-summary b.ok { color: var(--ok); }
.test-summary b.bad { color: var(--bad); }
.test-list { list-style: none; padding: 0; margin: 0; font-family: 'IBM Plex Mono', monospace; font-size: 11px; }
.test-list li {
  display: grid; grid-template-columns: 60px 1fr; gap: 12px;
  padding: 5px 0; border-bottom: 1px dashed var(--rule-soft);
}
.test-list li:last-child { border-bottom: 0; }
.badge { font-weight: 600; letter-spacing: 0.08em; }
.badge.ok { color: var(--ok); }
.badge.bad { color: var(--bad); }
.test-list .detail { color: var(--ink-soft); font-size: 10.5px; }