/* The Lab: languages side by side, on the choir's nave, vellum and gold. */
body[data-room="lab"] main, body[data-room="lab"] #book, body[data-room="lab"] #inspector { display: none; }
body[data-room="lab"] header > :not(.brand):not(a.home):not(#rooms) { display: none !important; }
#lab { grid-row: 2 / span 2; min-height: 0; display: grid; grid-template-rows: auto minmax(0, 1fr) auto; position: relative;
  --asp: var(--rubric); --short: var(--gold); --pre: #6fa8c8; --spread: #8a7fc4;
  --k-phonotactic: #c27a4a; --k-allophone: var(--gold); --k-coarticulation: #6fa8c8; --k-prosody: #9b8ac9;
  background: radial-gradient(ellipse at 40% 0%, #1b1e27 0%, var(--nave) 60%); }
#lab[hidden] { display: none; }
#lab .label { white-space: nowrap; }
#lab .spacer { flex: 1; }

/* the bar */
#labBar { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; padding-block: 7px; position: relative;
  padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px));
  border-bottom: 1px solid var(--line); background: var(--stone); }
#labBar button, #labBar select { font-size: 12.5px; padding: 4px 9px; }
#labBar .lab-text { display: flex; align-items: center; gap: 6px; flex: 1 1 320px; min-width: 0; }
#labText { flex: 1; min-width: 0; font: 15px var(--display); padding: 5px 9px; }
#labAdd { max-width: 190px; }
.lab-views { display: inline-flex; gap: 1px; padding: 2px; border: 1px solid var(--line); border-radius: 7px; background: var(--nave); }
#labBar .lab-views button { border: 0; background: transparent; padding: 3px 10px; color: var(--dim); }
#labBar .lab-views button.on { background: var(--gold); color: #1a1408; font-weight: 700; }
/* the speech rate (lab-tract.js labRateBar): a slider and its value, which resets it */
#labBar .lab-rate { display: inline-flex; align-items: center; gap: 6px; }
#labBar .lab-rate input[type=range] { width: 120px; min-width: 72px; margin: 0; accent-color: var(--gold); cursor: pointer; }
#labBar .lab-rate input[type=range]:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; border-radius: 4px; }
#labBar #labRateOut { min-width: 4.2em; padding: 4px 6px; font-variant-numeric: tabular-nums; }
#labBar #labRateOut:disabled { opacity: 1; cursor: default; }
#labBar #labRateOut.on { border-color: var(--gold); color: var(--gold); }
#labMenu { position: absolute; right: 16px; top: calc(100% - 4px); z-index: 30; display: grid; min-width: 160px; padding: 4px; background: var(--stone-2); border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 8px 24px #0008; }
#labMenu[hidden] { display: none; }
#labMenu button, .lab-col-menu button { text-align: left; border: 0; background: transparent; padding: 6px 10px; }
#labMenu button:hover, .lab-col-menu button:hover { background: color-mix(in srgb, var(--gold) 18%, transparent); }
#labMode { font-size: 11px; }
/* under the text: what the reader read of native script, and what it guessed */
#labRead { order: 99; flex-basis: 100%; min-width: 0; font-size: 12px; line-height: 1.4; color: var(--dim); overflow-wrap: anywhere; }
#labRead[hidden] { display: none; }
#labRead .lab-read-lang { color: var(--gold); }
#labRead .lab-read-rom { font-family: var(--display); font-size: 13px; color: var(--vellum); user-select: all; }
#labRead .lab-read-warn { color: var(--rubric); }
#labRead .sl { opacity: 0.5; }
#labStatus { position: absolute; left: 50%; bottom: 12px; transform: translateX(-50%); z-index: 20; pointer-events: none; font-family: var(--label); font-size: 13px; letter-spacing: 0.04em;
  padding: 4px 12px; border-radius: 10px; background: color-mix(in srgb, var(--stone) 94%, transparent); border: 1px solid var(--line); }
#labStatus:empty { display: none; }

#labMain { min-height: 0; overflow: auto; padding: 12px max(16px, env(safe-area-inset-right, 0px)) 24px max(16px, env(safe-area-inset-left, 0px)); scrollbar-width: thin; }
.lab-wait { color: var(--dim); text-align: center; margin: 40px 0; }

/* the columns */
#labCols { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 360px), 1fr)); gap: 12px; align-items: start; }
#labCols[hidden], #labMatrix[hidden], #labDiff[hidden] { display: none; }
.lab-col { min-width: 0; background: var(--stone); border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px 10px; display: grid; gap: 6px; position: relative; }
.lab-col.playing { border-color: var(--gold); }
.lab-col-h { display: flex; align-items: center; gap: 5px; flex-wrap: wrap; }
.lab-col-h select.lang { font: 700 14px var(--display); max-width: 210px; padding: 3px 6px; }
.lab-col-h .sp { flex: 1; }
.lab-col-h .cx { color: var(--dim); border-color: transparent; background: transparent; padding: 3px 6px; }
.lab-col-h .cx:hover { color: var(--vellum); border-color: var(--rubric); }
.lab-col-h button { padding: 3px 8px; font-size: 12.5px; }
.lab-col-h .play { display: inline-flex; }
.lab-col-h .play button { border-radius: 0; margin-left: -1px; min-width: 28px; }
.lab-col-h .play button:first-child { border-radius: 6px 0 0 6px; margin-left: 0; }
.lab-col-h .play button:last-child { border-radius: 0 6px 6px 0; }
.lab-col-h .play { align-items: center; gap: 4px; }
.lab-col-h .play button[data-rate] { border-radius: 6px; }
.lab-col-h .play .crate { width: 72px; margin: 0; accent-color: var(--gold); cursor: pointer; }
.lab-col-h .play .crate:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; border-radius: 4px; }
.lab-col-h .play .crate-out { min-width: 40px; border-radius: 6px; font-variant-numeric: tabular-nums; }
.lab-col-menu { position: absolute; right: 8px; top: 38px; z-index: 25; display: grid; min-width: 170px; padding: 4px; background: var(--stone-2); border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 8px 24px #0008; }
.lab-col-menu[hidden] { display: none; }
#lab .ltag { font: 10.5px var(--label); letter-spacing: 0.05em; padding: 0 5px; border-radius: 8px; border: 1px solid var(--line); color: var(--dim); white-space: nowrap; }
#lab .ltag.new, #lab .edited { color: var(--gold); border-color: color-mix(in srgb, var(--gold) 60%, var(--line)); }
#lab .edited { font: 10.5px var(--label); letter-spacing: 0.05em; padding: 0 5px; border-radius: 8px; border: 1px solid; }
#lab .ltag.fired { color: var(--vellum); border-color: transparent; background: color-mix(in srgb, var(--gold) 22%, transparent); }
#lab .ltag.inh { font-style: italic; }

/* the IPA line */
.lab-ipa { font: 21px/1.35 "Gentium Plus", "Charis SIL", "Doulos SIL", var(--display); word-spacing: 0.25em; overflow-wrap: anywhere; min-height: 1.4em; }
.lab-ipa .sl { color: var(--dim); }
.lab-ipa .w { white-space: nowrap; word-spacing: 0; }
.lab-ipa .sd, .lab-ipa .st { color: var(--dim); }
.lab-ipa .st { color: var(--gold); }
.lab-ipa .ph { border-radius: 3px; cursor: default; }
.lab-ipa .ph.ruled { text-decoration: underline dotted color-mix(in srgb, var(--gold) 70%, transparent); text-underline-offset: 4px; }
.lab-ipa .ph.mark, .lab-ipa .ph.hov { background: color-mix(in srgb, var(--gold) 30%, transparent); }
.lab-ipa sup { font-size: 0.6em; }
.lab-ipa .guess { display: block; font: 11px var(--label); color: var(--dim); letter-spacing: 0.04em; }
.lab-none { font: 14px var(--display); color: var(--dim); }

/* the score and the contour */
.lab-viz { min-width: 0; overflow: hidden; }
.lab-viz svg, .lab-dcol svg { display: block; max-width: 100%; height: auto; }
#lab svg text { font-family: var(--label); }
#lab svg .lane { fill: #0f1218; }
#lab svg .lane.odd { fill: #12151c; }
#lab svg .lanel { fill: var(--dim); font-size: 10px; text-anchor: end; letter-spacing: 0.04em; }
#lab svg .tk { stroke: #2a2f3a; stroke-width: 1; }
#lab svg .tkl { fill: #6c6759; font-size: 9px; text-anchor: middle; font-family: var(--mono); }
#lab svg .b { fill: #4a5263; stroke: #12151c; stroke-width: 0.5; opacity: 0.92; }
#lab svg .b.m-vowel { fill: #7b6a3f; }
#lab svg .b.m-stop { fill: #7d4b3f; }
#lab svg .b.m-fricative { fill: #5d6b4a; }
#lab svg .b.m-nasal { fill: #4b5d7a; }
#lab svg .b.m-lateral, #lab svg .b.m-approximant, #lab svg .b.m-flap, #lab svg .b.m-trill { fill: #5e5378; }
#lab svg .b.sec { fill: #7b6a3f; opacity: 0.45; }
#lab svg .b.spread { fill: var(--spread); opacity: 0.35; stroke: var(--spread); stroke-dasharray: 2 2; }
#lab svg .b.unrel { stroke: var(--vellum); stroke-dasharray: 3 2; stroke-width: 0.8; }
#lab svg .unrel-m { fill: var(--vellum); font-size: 11px; }
#lab svg rect.b.insel { stroke: var(--gold); stroke-width: 1.6; opacity: 1; }
#lab svg rect.b.hov:not(.spread):not(.sec) { stroke: var(--vellum); stroke-width: 1.2; opacity: 1; }
.lab-legend .lg-how { margin-left: auto; color: var(--dim); font-style: italic; white-space: normal; }
#lab svg .bl { fill: var(--vellum); font: 11px "Gentium Plus", "Charis SIL", var(--display); text-anchor: middle; pointer-events: none; }
#lab svg .vc { fill: var(--ok); }
#lab svg .rel { stroke: var(--vellum); stroke-width: 1; opacity: 0.55; }
#lab svg .vot { stroke: none; }
#lab svg .vot.asp { fill: var(--asp); }
#lab svg .vot.short { fill: var(--short); }
#lab svg .vot.pre { fill: var(--pre); opacity: 0.85; }
#lab svg .votl { fill: #10131a; font: 700 9px var(--mono); text-anchor: middle; pointer-events: none; }
#lab svg .hl, #lab svg .hov { stroke: var(--gold); stroke-width: 1.5; opacity: 1; }
#lab svg .df { stroke: var(--rubric); stroke-width: 2; opacity: 1; }
#lab svg .playhead { stroke: var(--gold); stroke-width: 1.5; }
#lab svg .zero { stroke: #3b4150; stroke-dasharray: 3 3; }
#lab svg .f0 { fill: none; stroke: var(--gold); stroke-width: 1.8; stroke-linejoin: round; }
#lab svg .f0d { fill: var(--gold); }
#lab svg .syl { fill: #3a404d; }
#lab svg .syl.str { fill: var(--gold); opacity: 0.8; }
#lab svg .mora { fill: var(--dim); font: 9px var(--mono); text-anchor: middle; }
#lab svg .mora.h { fill: var(--vellum); }
#lab svg .mora.k { fill: var(--gold); font-weight: 700; }
#lab svg .ip { stroke: var(--dim); stroke-width: 2; opacity: 0.55; }
#lab svg .ipb { stroke: var(--gold); stroke-width: 1; stroke-dasharray: 3 2; opacity: 0.7; }
#lab svg .acc { fill: var(--vellum); font: 9px var(--mono); text-anchor: middle; }
#lab svg .acc.nuc { fill: var(--gold); font-weight: 700; font-size: 10px; }
.lab-ipa .dn { color: var(--gold); }
.lab-legend { display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: center; font: 11px var(--label); letter-spacing: 0.04em; color: var(--dim); }
.lab-legend i.k { display: inline-block; width: 14px; height: 7px; border-radius: 2px; vertical-align: middle; }
.lab-legend span { white-space: nowrap; }
#lab .lab-legend .asp { background: var(--asp); } #lab .lab-legend .short { background: var(--short); } #lab .lab-legend .pre { background: var(--pre); }
#lab .lab-legend .spread { background: var(--spread); opacity: 0.6; }

/* the trace */
.lab-trace summary { cursor: pointer; font: 13px var(--label); letter-spacing: 0.04em; color: var(--vellum); }
.lab-trace summary b { color: var(--gold); }
.lab-trace ol { list-style: none; margin: 6px 0 0; padding: 0; display: grid; gap: 3px; max-height: 220px; overflow-y: auto; scrollbar-width: thin; }
.lab-trace li { display: grid; grid-template-columns: 8px auto minmax(0, 1fr); gap: 6px; align-items: baseline; font-size: 12.5px; padding: 2px 4px; border-radius: 5px; cursor: pointer; }
.lab-trace li:hover { background: var(--stone-2); }
.lab-trace li.df { background: color-mix(in srgb, var(--rubric) 16%, transparent); }
.lab-trace li.none { display: block; color: var(--dim); cursor: default; }
.lab-trace li b { font: 12.5px var(--mono); color: var(--vellum); font-weight: 500; }
.lab-trace .fx { display: flex; flex-wrap: wrap; gap: 2px 10px; color: var(--dim); }
.lab-trace .ch em { font-style: italic; color: var(--vellum); opacity: 0.8; }
#lab .k { display: inline-block; width: 8px; height: 8px; border-radius: 2px; background: var(--dim); }
#lab .k-phonotactic { background: var(--k-phonotactic); } #lab .k-allophone { background: var(--k-allophone); }
#lab .k-coarticulation { background: var(--k-coarticulation); } #lab .k-prosody { background: var(--k-prosody); }

/* the rules panel */
.lab-rules { border-top: 1px solid var(--line); padding-top: 6px; display: grid; gap: 8px; max-height: 62vh; overflow-y: auto; scrollbar-width: thin; overscroll-behavior: contain; }
.lab-rules[hidden] { display: none; }
.lab-rules h4 { margin: 0; display: flex; align-items: center; gap: 6px; font: 700 12.5px var(--label); letter-spacing: 0.08em; text-transform: lowercase; color: var(--vellum); position: sticky; top: 0; background: var(--stone); padding: 3px 0; z-index: 1; }
.lab-rules h4 .add { margin-left: auto; font-size: 11.5px; padding: 1px 7px; }
.lab-rules .prs { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 6px 16px; }
/* each setting: its name and value on a line, the slider full width beneath */
.lab-rules .pr { display: grid; grid-template-columns: minmax(0, 1fr) auto 18px; grid-template-areas: "name val x" "slide slide slide"; align-items: center; column-gap: 6px; row-gap: 1px; font-size: 12px; }
.lab-rules .pr span { grid-area: name; color: var(--dim); font-family: var(--label); letter-spacing: 0.03em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lab-rules .pr.chg span { color: var(--gold); }
.lab-rules .pr output { grid-area: val; font: 11.5px var(--mono); color: var(--vellum); text-align: right; font-variant-numeric: tabular-nums; }
.lab-rules .pr .x { grid-area: x; padding: 0; font-size: 11px; border: 0; background: transparent; color: var(--dim); visibility: hidden; }
.lab-rules .pr.chg .x { visibility: visible; }
.lab-rules .pr input[type=range] { grid-area: slide; width: 100%; min-width: 0; margin: 0; height: 22px; background: transparent; -webkit-appearance: none; appearance: none; cursor: pointer; }
.lab-rules .pr input[type=range]::-webkit-slider-runnable-track { height: 6px; border-radius: 3px; background: var(--line); }
.lab-rules .pr input[type=range]::-moz-range-track { height: 6px; border-radius: 3px; background: var(--line); }
.lab-rules .pr input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 18px; height: 18px; margin-top: -6px; border-radius: 50%; background: var(--vellum); border: 2px solid var(--stone, #1a1d24); box-shadow: 0 0 0 1px var(--line); }
.lab-rules .pr input[type=range]::-moz-range-thumb { width: 16px; height: 16px; border-radius: 50%; background: var(--vellum); border: 2px solid var(--stone, #1a1d24); }
.lab-rules .pr.chg input[type=range]::-webkit-slider-thumb { background: var(--gold); }
.lab-rules .pr.chg input[type=range]::-moz-range-thumb { background: var(--gold); }
.lab-rules .pr input[type=range]:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; border-radius: 4px; }
.lab-rules ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.lab-rules li.none { color: var(--dim); font-size: 12px; padding-left: 26px; }
.lab-rules li.rule { display: grid; grid-template-columns: 22px minmax(0, 1fr) auto; gap: 2px 6px; align-items: start; padding: 4px 4px; border-radius: 6px; }
.lab-rules li.rule:hover, .lab-rules li.rule.open { background: var(--stone-2); }
.lab-rules li.rule.hit { box-shadow: inset 3px 0 0 var(--gold); background: color-mix(in srgb, var(--gold) 8%, transparent); }
.lab-rules li.rule.hit:hover, .lab-rules li.rule.hit.open { background: color-mix(in srgb, var(--gold) 14%, var(--stone-2)); }
#lab .ltag.core { color: var(--gold); border-color: color-mix(in srgb, var(--gold) 55%, transparent); }
.lab-rules .rsort { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin: 8px 0 2px; }
.lab-rules .rsort .sp { flex: 1; }
.lab-rules .rsort .seg { display: inline-flex; }
.lab-rules .rsort .seg button { border-radius: 0; margin-left: -1px; padding: 2px 8px; font-size: 12px; }
.lab-rules .rsort .seg button:first-child { border-radius: 6px 0 0 6px; margin-left: 0; }
.lab-rules .rsort .seg button:last-child { border-radius: 0 6px 6px 0; }
.lab-rules li.rule.off .rt { opacity: 0.5; }
.lab-rules li.rule.off .rt b { text-decoration: line-through; }
.lab-rules .sw input { accent-color: var(--gold); margin: 3px 0 0; }
.lab-rules .rt b { font: 500 12.5px var(--mono); }
.lab-rules .rd { font-size: 13px; line-height: 1.3; }
.lab-rules .rsrc { font: italic 11.5px var(--display); color: var(--dim); }
.lab-rules .ra { display: flex; gap: 3px; }
.lab-rules .ra button { font-size: 11px; padding: 2px 6px; }
.rform { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 4px 8px; padding: 6px 2px 2px; }
.rform label { display: grid; gap: 1px; font: 11px var(--label); letter-spacing: 0.04em; color: var(--dim); }
.rform label.wide { grid-column: 1 / -1; }
.rform input, .rform select { font: 12.5px var(--mono); padding: 3px 6px; min-width: 0; }
.rform .then { grid-column: 1 / -1; border-top: 1px dashed var(--line); padding-top: 3px; }
.rform .fa { grid-column: 1 / -1; display: flex; gap: 5px; justify-content: flex-end; }
.rform .fa button { font-size: 12px; padding: 3px 9px; }
.rform.json textarea { grid-column: 1 / -1; min-height: 220px; font: 12px/1.35 var(--mono); background: var(--nave); color: var(--vellum); border: 1px solid var(--line); border-radius: 6px; padding: 6px; resize: vertical; }

/* the tooltip */
#labTip { position: fixed; z-index: 90; max-width: 300px; padding: 8px 10px; background: var(--stone-2); border: 1px solid var(--gold); border-radius: 8px; box-shadow: 0 8px 28px #000a; font-size: 12.5px; pointer-events: none; }
#labTip[hidden] { display: none; }
#labTip .tt-h { display: flex; align-items: baseline; gap: 8px; margin-bottom: 4px; }
#labTip .tt-ipa { font: 26px/1 "Gentium Plus", "Charis SIL", var(--display); color: var(--gold); }
#labTip code { font: 11px var(--mono); color: var(--dim); }
#labTip dl { display: grid; grid-template-columns: auto 1fr; gap: 1px 10px; margin: 0; }
#labTip dt { font: 11px var(--label); letter-spacing: 0.04em; color: var(--dim); }
#labTip dd { margin: 0; }
#labTip .tt-r { margin-top: 5px; font: 11px var(--label); letter-spacing: 0.06em; color: var(--dim); }
#labTip ul { margin: 2px 0 0; padding-left: 14px; }
#labTip li b { font: 500 11.5px var(--mono); color: var(--vellum); }

/* the matrix */
.mx-note { display: block; margin: 0 0 8px; white-space: normal !important; }
.mx-wrap { overflow-x: auto; scrollbar-width: thin; }
.lab-mx { border-collapse: separate; border-spacing: 0; font-size: 12.5px; min-width: 100%; }
.lab-mx th, .lab-mx td { padding: 4px 8px; border-bottom: 1px solid #252a35; text-align: left; vertical-align: top; }
.lab-mx thead th { position: sticky; top: -12px; background: var(--stone); font: 700 13px var(--display); z-index: 2; border-bottom: 1px solid var(--line); white-space: nowrap; }
.lab-mx .rh { position: sticky; left: 0; background: var(--nave); font: 500 12px var(--mono); white-space: nowrap; z-index: 1; }
.lab-mx tr.kh th { font: 700 12px var(--label); letter-spacing: 0.08em; color: var(--dim); background: transparent; padding-top: 12px; text-transform: lowercase; }
.lab-mx tr.kh .k { margin-right: 6px; }
.lab-mx tr.differs .rh { color: var(--gold); }
.lab-mx tr.differs td, .lab-mx tr.differs .rh { background: color-mix(in srgb, var(--gold) 7%, var(--nave)); }
.lab-mx td.num { font: 12px var(--mono); white-space: nowrap; }
.lab-mx td.chg { color: var(--gold); }
.lab-mx td.abs { color: #555b66; }
.lab-mx td.on, .lab-mx td.off { cursor: pointer; min-width: 120px; }
.lab-mx td.on:hover, .lab-mx td.off:hover { outline: 1px solid var(--gold); outline-offset: -1px; }
.lab-mx td.off { color: var(--dim); }
.lab-mx .dot { color: var(--gold); margin-right: 5px; }
.lab-mx td.off .dot { color: var(--dim); }
.lab-mx .sum { color: var(--vellum); opacity: 0.85; }
.lab-mx .ltag { margin-left: 4px; }
.lab-mx .vbar { display: inline-block; height: 6px; margin-left: 6px; border-radius: 2px; vertical-align: middle; }
.lab-mx .vbar.asp { background: var(--asp); } .lab-mx .vbar.short { background: var(--short); } .lab-mx .vbar.pre { background: var(--pre); }

/* diff */
.dsel { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; margin-bottom: 10px; font-family: var(--label); }
.dsel select { font: 13px var(--display); max-width: 240px; }
.dsel button { font-size: 12.5px; padding: 4px 9px; }
.lab-dcol { background: var(--stone); border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; margin-bottom: 10px; display: grid; gap: 4px; overflow: hidden; }
.lab-dcol .dh { display: flex; align-items: center; gap: 8px; font: 700 14px var(--display); }
.lab-dcol .dh b { color: var(--gold); font-family: var(--label); }
.lab-dcol .dh .play button { padding: 2px 8px; font-size: 12px; }
.lab-dcol .lab-ipa .ph.mark { background: color-mix(in srgb, var(--rubric) 35%, transparent); }
.lab-dt { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.lab-dt th, .lab-dt td { padding: 4px 8px; border-bottom: 1px solid #252a35; text-align: left; vertical-align: top; }
.lab-dt thead th { font: 700 12.5px var(--label); letter-spacing: 0.05em; color: var(--dim); }
.lab-dt tbody th { font: 500 12px var(--mono); color: var(--rubric); white-space: nowrap; }
.lab-dt tr.pd th { color: var(--gold); font-family: var(--label); }
.lab-dt td .ch { display: inline-block; margin-right: 10px; }
.lab-dt td .ch em { color: var(--vellum); opacity: 0.8; }
.lab-dt td.abs, .lab-dt td.off { color: var(--dim); }
.lab-dt td.num { font: 12px var(--mono); }

@media (max-width: 600px) {
  #labBar { gap: 6px; }
  #labBar .lab-text { flex-basis: 100%; }
  #labBar .lab-text .label { display: none; }
  #labMode { display: none; }
  #labMain { padding-top: 8px; }
  .lab-col { padding: 7px 8px 9px; }
  .lab-col-h select.lang { max-width: 150px; }
  .lab-ipa { font-size: 18px; }
  #labTip { max-width: calc(100vw - 16px); }
}

/* Rec: armed or recording */
#labRec.on { color: #ff8a7a; border-color: #b4483c; font-variant-numeric: tabular-nums; }
/* Blend: connected speech on (lit) or each word alone (dim, dashed) */
#labBlend.on { color: #9fe0b0; border-color: #4f8f62; }
#labBlend:not(.on) { border-style: dashed; opacity: .85; }
/* the sonogram, under the score on its time axis */
#labBar #labDesign { padding: 4px 12px; }
.lab-col-h select.voice { font-size: 12px; max-width: 150px; padding: 3px 5px; color: var(--dim); }
.lab-sono { display: grid; grid-template-columns: minmax(0, 1fr); gap: 3px; margin: 2px 0; min-width: 0; }
.lab-sono:empty { display: none; }
.sono-h { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 6px; font-size: 11.5px; }
.sono-h .sp { flex: 1; }
.sono-h button { font-size: 11px; padding: 1px 6px; }
.sono-h select { font-size: 11px; padding: 1px 4px; }
.sono-h .seg { display: inline-flex; gap: 1px; padding: 1px; border: 1px solid var(--line); border-radius: 6px; background: var(--nave); }
.sono-h .seg button { border: 0; background: transparent; color: var(--dim); padding: 1px 6px; }
.sono-h .seg button.on { background: color-mix(in srgb, var(--gold) 80%, transparent); color: #1a1408; font-weight: 700; }
.sono-h .fm { display: inline-flex; gap: 2px; }
.sono-h .fm button { color: var(--dim); border-color: var(--line); font-family: var(--mono); }
.sono-h .fm button.on { color: #10131a; background: var(--fc); border-color: var(--fc); font-weight: 700; }
.sono-box { position: relative; max-width: 100%; overflow: hidden; }
.sono-box canvas { display: block; }
.sono-ov { position: absolute; left: 0; top: 0; cursor: crosshair; touch-action: pan-y; }
.sono-wait { position: absolute; left: 52px; top: 8px; font: 11px var(--label); letter-spacing: 0.04em; color: var(--vellum); background: #10131acc; padding: 1px 6px; border-radius: 6px; pointer-events: none; }
.sono-wait:empty { display: none; }
.lab-sono.stale .sono-cv { opacity: 0.55; }
.sono-read { display: flex; flex-wrap: wrap; gap: 2px 10px; min-height: 1.5em; font: 11.5px var(--mono); color: var(--dim); }
.sono-read b { color: var(--vellum); font-weight: 500; }
.sono-read .fv b { color: var(--fc); }
.sono-read .ph { font-family: "Gentium Plus", "Charis SIL", var(--display); font-size: 13px; color: var(--gold); }
.sono-read .ph em { color: var(--vellum); font-size: 12px; }
.sono-read .hint { font-family: var(--label); letter-spacing: 0.03em; }
.sono-foot { display: flex; align-items: flex-start; gap: 6px; }
.sono-foot .lab-meas { flex: 1; min-width: 0; }
.sono-foot .files { display: inline-flex; gap: 3px; }
.sono-foot .files button { font-size: 11px; padding: 1px 6px; }
.lab-meas summary { cursor: pointer; font: 13px var(--label); letter-spacing: 0.04em; color: var(--vellum); }
.lab-meas .mt { overflow-x: auto; max-height: 260px; overflow-y: auto; scrollbar-width: thin; margin-top: 4px; }
.lab-meas table { border-collapse: collapse; font-size: 12px; width: 100%; }
.lab-meas th, .lab-meas td { padding: 2px 6px; border-bottom: 1px solid #252a35; text-align: left; white-space: nowrap; }
.lab-meas thead th { position: sticky; top: 0; background: var(--stone); font: 11px var(--label); letter-spacing: 0.04em; color: var(--dim); }
.lab-meas .n { text-align: right; font-family: var(--mono); }
.lab-meas td.ipa { font: 15px "Gentium Plus", "Charis SIL", var(--display); }
.lab-meas tr[data-mi] { cursor: pointer; }
.lab-meas tr[data-mi]:hover { background: var(--stone-2); }
.lab-meas tr.sel { background: color-mix(in srgb, var(--gold) 20%, transparent); }
.lab-meas td b { color: var(--gold); font-weight: 500; }
#lab svg .sel { stroke: #fff; stroke-width: 1.6; opacity: 1; }
.lab-ipa .ph.sel { background: color-mix(in srgb, var(--gold) 48%, transparent); color: #fff; }
.lab-ipa .ph, #lab svg .b, #lab svg .vc, #lab svg .vot { cursor: pointer; }
/* in the score the box's cursor says what a drag does (lab-edit.js edCursor: grab, ew-resize, grabbing) */
#lab .lab-viz .score svg .b { cursor: inherit; }

/* the Studio, come from the Lab's Voice design */
#stBackLab { font-weight: 700; }
#stVoice.design { box-shadow: inset 0 0 0 2px var(--gold); transition: box-shadow 0.6s; }
#stVoice .svBank { flex-wrap: wrap; }
#stVoice .svBank span { display: inline-flex; gap: 4px; }
#stVoice .svBank button { white-space: nowrap; padding: 3px 7px; }
#stVoice .svName input { flex: 1; min-width: 0; font-size: 13px; padding: 3px 6px; }
#stVoice h3.sub { display: flex; }
@media (max-width: 600px) {
  .lab-col-h select.voice { max-width: 120px; }
  .sono-h .sp { display: none; }
}
#lab .lab-meas summary .label { white-space: normal; }

/* hand edits: badges and pitch points to drag, a range to stretch, the prosody's breaks */
.lab-col .lab-viz .score, .lab-col .lab-viz .contour { touch-action: pan-y; user-select: none; -webkit-user-select: none; }
.lab-col .lab-viz .score { cursor: crosshair; }
.lab-col .lab-viz .contour { cursor: copy; }
#lab svg .f0h { fill: transparent; cursor: grab; }
#lab svg .f0h:hover { fill: color-mix(in srgb, var(--gold) 25%, transparent); }
#lab svg .f0d.on { fill: #fff; }
#lab svg.lab-contour.ed .f0 { stroke-dasharray: none; stroke: #f0c060; }
/* the pitch pane: its phones' classes (vowels warm, consonants cool), the
   sonogram faint behind (its vowels and formants, a texture, not a scale),
   and a stretch chosen to play, with its ▶ */
#lab { --ph-v: var(--gold); --ph-c: var(--pre); --sono-faint: var(--vellum); }
#lab svg .pc, #lab svg .sobg, #lab svg .psel { pointer-events: none; }
#lab svg .pc.v { fill: color-mix(in srgb, var(--ph-v) 8%, transparent); }
#lab svg .pc.c { fill: color-mix(in srgb, var(--ph-c) 6%, transparent); }
#lab svg .sobg { fill: var(--sono-faint); opacity: 0.24; }
#lab svg.lab-contour .f0 { stroke: color-mix(in oklab, var(--ph-v) 50%, var(--ph-c)); }
#lab svg.lab-contour .f0.v { stroke: var(--ph-v); }
#lab svg.lab-contour.ed .f0 { stroke: color-mix(in oklab, #f0c060 50%, var(--ph-c)); }
#lab svg.lab-contour.ed .f0.v { stroke: #f0c060; }
#lab svg .psel { fill: color-mix(in srgb, var(--vellum) 11%, transparent); stroke: color-mix(in srgb, var(--vellum) 45%, transparent); stroke-width: 1; }
#lab svg .pplay { cursor: pointer; }
#lab svg .pplay circle { fill: var(--gold); stroke: var(--nave); stroke-width: 1; }
#lab svg .pplay path { fill: var(--nave); }
#lab svg .pplay:hover circle { fill: var(--vellum); }
#lab svg .b.he { stroke: #fff; stroke-dasharray: 2 1.5; stroke-width: 0.9; }
#lab svg .rng { fill: color-mix(in srgb, var(--gold) 14%, transparent); pointer-events: none; }
#lab svg .rngh { fill: var(--gold); opacity: 0.85; cursor: ew-resize; }
#lab svg .brk { fill: #6fa8c8; opacity: 0.18; }
#lab svg .brkl { stroke: #6fa8c8; stroke-width: 1; stroke-dasharray: 2 2; opacity: 0.8; pointer-events: none; }
#lab svg .brkm { fill: #9cc7de; font: 700 10px var(--mono); pointer-events: none; }
.lab-col-h button.hand { font: 10.5px var(--label); letter-spacing: 0.05em; padding: 0 6px; border-radius: 8px; color: var(--gold); border-color: color-mix(in srgb, var(--gold) 60%, var(--line)); background: transparent; }
.lab-rangebar { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; font-size: 12px; padding: 3px 6px; border: 1px solid color-mix(in srgb, var(--gold) 45%, var(--line)); border-radius: 7px; background: color-mix(in srgb, var(--gold) 7%, var(--stone)); }
.lab-rangebar[hidden] { display: none; }
.lab-rangebar b { font: 12px var(--mono); color: var(--vellum); font-weight: 500; }
.lab-rangebar input { width: 64px; font: 12px var(--mono); padding: 1px 4px; }
.lab-rangebar button { font-size: 11.5px; padding: 1px 8px; }
#labBar #labTextLang, #labBar #labEx { max-width: 190px; font-size: 13px; }

/* hand edits in Diff's strips too */
.lab-dcol .lab-viz .score, .lab-dcol .lab-viz .contour { touch-action: pan-y; user-select: none; -webkit-user-select: none; }
.lab-dcol .lab-viz .score { cursor: crosshair; }
.lab-dcol .lab-viz .contour { cursor: copy; }
.lab-dcol .lab-viz { min-width: 0; overflow: hidden; }
.lab-dcol .dh .sp { flex: 1; }
.lab-dcol .dh button.hand { font: 10.5px var(--label); letter-spacing: 0.05em; padding: 0 6px; border-radius: 8px; color: var(--gold); border-color: color-mix(in srgb, var(--gold) 60%, var(--line)); background: transparent; }
.dsel .dcap { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; font: 14px var(--display); }
.dsel .dcap b { color: var(--gold); font-family: var(--label); }
.dsel .label { white-space: normal !important; }

/* one column full screen: the others hidden, it fills the Lab, everything larger */
.lab-col-h button.fs span { font-size: 11.5px; }
#labFocusBar { position: sticky; top: -12px; z-index: 6; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; margin: -12px 0 10px; padding: 8px 0; background: var(--nave); border-bottom: 1px solid var(--line); }
#labFocusBar[hidden] { display: none; }
#labFocusBar .fb-back { font-weight: 700; padding: 5px 12px; }
#labFocusBar .fb-step { display: inline-flex; align-items: center; gap: 6px; font: 13px var(--mono); color: var(--dim); }
#labFocusBar .fb-step button { min-width: 34px; padding: 4px 8px; font-size: 15px; }
#labFocusBar .fb-hint { font-size: 11.5px; }
#labCols.focus { grid-template-columns: minmax(0, 1fr); }
#labCols.focus > .lab-col:not(.focused) { display: none; }
.lab-col.focused { padding: 12px 16px 16px; gap: 10px; }
/* full screen: the header (play, ½, ¼, Rules) stays in view while the page scrolls to the pitch curve */
.lab-col.focused > .lab-col-h { position: sticky; top: -12px; z-index: 6; background: var(--stone); margin: -12px -16px 0; padding: 12px 16px 8px; border-radius: 10px 10px 0 0; box-shadow: 0 1px 0 var(--line); }
.lab-col.focused .lab-col-h select.lang { font-size: 19px; max-width: 320px; }
.lab-col.focused .lab-col-h button { font-size: 13.5px; padding: 4px 10px; }
.lab-col.focused .lab-ipa { font-size: 34px; line-height: 1.3; }
#lab .lab-col.focused svg .bl { font-size: 15px; }
#lab .lab-col.focused svg .lanel { font-size: 11.5px; }
#lab .lab-col.focused svg .tkl { font-size: 10.5px; }
#lab .lab-col.focused svg .votl { font-size: 10.5px; }
#lab .lab-col.focused svg .unrel-m { font-size: 15px; }
.lab-col.focused .lab-legend { font-size: 12px; }
.lab-col.focused .lab-trace ol { max-height: 360px; }
.lab-col.focused .lab-trace li, .lab-col.focused .lab-trace li b { font-size: 13.5px; }
.lab-col.focused .lab-meas .mt { max-height: 460px; }
.lab-col.focused .lab-meas table { font-size: 13px; }
.lab-col.focused .sono-read { font-size: 12.5px; }
.lab-col.focused .lab-rules { max-height: none; }
/* wide: the rules beside the displays, held in view as the page scrolls */
@media (min-width: 1000px) {
  .lab-col.focused.rules-open { grid-template-columns: minmax(0, 1fr) clamp(320px, 30%, 440px); column-gap: 18px;
    grid-template-rows: auto auto auto auto auto auto auto 1fr;
    grid-template-areas: "h h" "trc rules" "ipa rules" "rng rules" "viz rules" "leg rules" "tr rules" ". rules"; }
  .lab-col.focused.rules-open > .lab-col-h { grid-area: h; }
  .lab-col.focused.rules-open > .lab-tract { grid-area: trc; }
  .lab-col.focused.rules-open > .lab-ipa { grid-area: ipa; }
  .lab-col.focused.rules-open > .lab-rangebar { grid-area: rng; }
  .lab-col.focused.rules-open > .lab-viz { grid-area: viz; }
  .lab-col.focused.rules-open > .lab-legend { grid-area: leg; }
  .lab-col.focused.rules-open > .lab-trace { grid-area: tr; }
  .lab-col.focused.rules-open > .lab-rules { grid-area: rules; align-self: start; position: sticky; top: 48px; max-height: calc(100vh - 190px);
    border-top: 0; border-left: 1px solid var(--line); padding: 0 0 0 14px; }
}
@media (max-width: 600px) {
  .lab-col.focused { padding: 8px 8px 12px; }
  .lab-col.focused .lab-ipa { font-size: 25px; }
  #lab .lab-col.focused svg .bl { font-size: 13px; }
  .lab-col.focused .lab-rules { max-height: 70vh; }
  #labFocusBar .fb-hint { display: none; }
}
#lab .ctr-h { display: flex; align-items: center; gap: 8px; margin-top: 2px; }
#lab .ctr-h .infer { font-size: 11px; padding: 1px 8px; }

/* pages of a long text */
#labPager { flex-basis: 100%; order: 98; display: flex; align-items: center; gap: 8px; min-width: 0; font-size: 13px; }
#labPager[hidden] { display: none; }
#labPager button { padding: 2px 10px; font-size: 15px; line-height: 1; }
#labPager b { font: 600 12px var(--mono); color: var(--gold); font-variant-numeric: tabular-nums; }
#labPager .pg-text { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--dim); font-style: italic; }

/* modules (the Accent builder, the rules panel, the matrix) */
#lab { --m-inventory: #c9a24a; --m-phonotactics: #c27a4a; --m-allophones: #6fa8c8; --m-rhythm: #7fb07a; --m-pitch: #9b8ac9; }
#lab .m-inventory { background: var(--m-inventory); } #lab .m-phonotactics { background: var(--m-phonotactics); }
#lab .m-allophones { background: var(--m-allophones); } #lab .m-rhythm { background: var(--m-rhythm); } #lab .m-pitch { background: var(--m-pitch); }
#lab .ltag.share { color: var(--vellum); border-color: color-mix(in srgb, var(--m-rhythm) 55%, var(--line)); }
#lab .before-tag { font: 10.5px var(--label); letter-spacing: 0.05em; padding: 0 5px; border-radius: 8px; border: 1px solid var(--pre); color: var(--pre); }
.lab-rules .rt .k { vertical-align: 1px; }
.lab-rules .rk .prs { margin: 2px 0 6px 2px; }
/* the Accent builder: a row per module, its language and strength */
.lab-rules .accent { display: grid; gap: 6px; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.lab-rules .ab-rows { display: grid; gap: 4px; }
.lab-rules .ab-row { display: grid; grid-template-columns: 92px minmax(0, 1fr) minmax(80px, 1.1fr) 48px; align-items: center; gap: 8px; font-size: 12.5px; }
.lab-rules .ab-n { font-family: var(--label); letter-spacing: 0.03em; color: var(--dim); white-space: nowrap; display: flex; align-items: center; gap: 6px; }
.lab-rules .ab-n .k { width: 8px; height: 8px; border-radius: 2px; }
.lab-rules .ab-row.chg .ab-n { color: var(--gold); }
.lab-rules .ab-row select { min-width: 0; width: 100%; font-size: 12.5px; }
.lab-rules .ab-row output { font: 11.5px var(--mono); color: var(--vellum); text-align: right; font-variant-numeric: tabular-nums; }
.lab-rules .ab-row input[type=range] { width: 100%; min-width: 0; margin: 0; height: 22px; accent-color: var(--gold); cursor: pointer; }
.lab-rules .ab-row input[type=range]:disabled { opacity: 0.35; cursor: default; }
.lab-rules .ab-act { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.lab-rules .ab-act .sp { flex: 1; }
.lab-rules .ab-act button { font-size: 12px; padding: 3px 9px; }
.lab-rules .ab-ab { display: inline-flex; align-items: center; }
.lab-rules .ab-ab button[data-a="ab-before"] { border-radius: 6px 0 0 6px; }
.lab-rules .ab-ab button[data-a="ab-after"] { border-radius: 0 6px 6px 0; margin-left: -1px; }
.lab-rules .ab-ab button[data-a="ab-play"] { margin-left: 6px; }
.lab-rules .ab-ab button.on { background: color-mix(in srgb, var(--gold) 26%, transparent); color: var(--vellum); }
@media (max-width: 520px) {
  .lab-rules .ab-row { grid-template-columns: 84px minmax(0, 1fr) 48px; grid-template-areas: "n sel out" "sl sl sl"; row-gap: 0; }
  .lab-rules .ab-row .ab-n { grid-area: n; } .lab-rules .ab-row select { grid-area: sel; }
  .lab-rules .ab-row input[type=range] { grid-area: sl; } .lab-rules .ab-row output { grid-area: out; }
}
.lab-mx tr.mfrom th, .lab-mx tr.mfrom td { font: 11.5px var(--label); color: var(--dim); }
.lab-mx tr.mfrom td.chg { color: var(--gold); }

/* teaching cards (teach.js): in the rules panel, and in Learn's Rules of speech */
.lab-rules .rd.tq { cursor: pointer; }
.lab-rules .rd.tq:hover { color: var(--gold); }
.lab-rules li.rule > .tcard { grid-column: 1 / -1; margin: 2px 0 4px 22px; }
.tcard { display: grid; gap: 6px; padding: 8px 10px; border-left: 2px solid var(--gold); border-radius: 0 6px 6px 0; background: color-mix(in srgb, var(--nave) 70%, var(--stone)); font-size: 13.5px; line-height: 1.4; }
.tcard p { margin: 0; max-width: 72ch; }
.tcard .t-plain { color: var(--vellum); }
.tcard .t-why, .tcard .t-contrast { color: var(--dim); }
.tcard .t-why .label, .tcard .t-contrast .label { color: var(--gold); margin-right: 4px; }
.tcard .t-note { font-size: 12px; color: var(--dim); font-style: italic; }
.tcard .t-ex { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: max-content minmax(0, max-content) max-content; justify-content: start; gap: 3px 10px; align-items: center; }
.tcard .t-ex li { display: contents; }
.tcard .t-word { font: 500 14px var(--display); letter-spacing: 0; padding: 1px 7px; background: transparent; border-color: transparent; color: var(--gold); text-align: left; }
.tcard .t-word:hover { border-color: var(--gold); }
.tcard .t-chg { min-width: 0; overflow-wrap: anywhere; }
.tcard .t-ipa { font: 14px var(--display); color: var(--vellum); }
.tcard .t-chg .t-ipa:first-child { color: var(--dim); }
.tcard .t-arr { color: var(--gold); margin: 0 6px; }
.tcard .t-chg small { font: 11px var(--label); letter-spacing: 0.04em; color: var(--dim); }
.tcard .t-play { display: inline-flex; }
.tcard .t-play button { font-size: 11px; padding: 2px 7px; border-radius: 0; white-space: nowrap; }
.tcard .t-play button:first-child { border-radius: 6px 0 0 6px; }
.tcard .t-play button + button { border-radius: 0 6px 6px 0; margin-left: -1px; }
@media (max-width: 520px) {
  .tcard .t-ex { grid-template-columns: max-content minmax(0, 1fr); }
  .tcard .t-play { grid-column: 1 / -1; justify-self: end; margin-bottom: 4px; }
  .lab-rules li.rule > .tcard { margin-left: 0; }
}

/* the articulation view (lab-tract.js): the head over a column, a Diff's two side by side */
.lab-tract { position: relative; height: clamp(200px, 21vw, 290px); border-radius: 8px; overflow: hidden; border: 1px solid var(--line);
  background: radial-gradient(ellipse at 62% 40%, #1d2029 0%, #12141a 70%); contain: strict; }
.lab-tract[hidden] { display: none; }
.lab-tract canvas { position: absolute; inset: 0; display: block; }
.lab-col.focused .lab-tract { height: clamp(300px, 54vh, 540px); }
.lab-col.playing .lab-tract { border-color: color-mix(in srgb, var(--gold) 55%, var(--line)); }
/* the wireframe (wire3d.js): turned by dragging, so the page does not scroll under a finger */
.lab-tract.wf { background: #060607; }
.lab-tract.wf canvas { cursor: grab; touch-action: none; }
.lab-tract .wf-reset { display: none; position: absolute; left: 8px; top: 8px; z-index: 1; font-size: 11px; padding: 2px 8px; background: rgba(12, 12, 14, 0.8); }
.lab-tract.wf .wf-reset { display: inline-block; }
.lab-dheads { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-bottom: 10px; }
.lab-dhead { position: relative; min-width: 0; }
.lab-dhead .lab-tract { height: clamp(230px, 32vw, 400px); }
.lab-dhead .dhl { position: absolute; left: 10px; bottom: 8px; font: 700 14px var(--display); pointer-events: none; text-shadow: 0 1px 3px #000; }
.lab-dhead .dhl b { color: var(--gold); font-family: var(--label); margin-right: 4px; }
#lab svg .scrubline { stroke: var(--gold); stroke-width: 1; stroke-dasharray: 4 3; opacity: 0.85; pointer-events: none; }
#lab svg.ti { width: 14px; height: 14px; vertical-align: -2.5px; margin-right: 4px; }
.lab-col-h button.hd span { font-size: 11.5px; }
#labHeads.on, .lab-col-h .hd.on, #labSync.on { background: color-mix(in srgb, var(--gold) 24%, transparent); color: var(--vellum); border-color: color-mix(in srgb, var(--gold) 70%, var(--line)); }
.lab-tractbar { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.lab-tractbar .tb-more { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.lab-tractbar .tb-more[hidden] { display: none; }
.lab-tractbar .seg { display: inline-flex; }
#labBar .lab-tractbar .seg button { border-radius: 0; margin-left: -1px; padding: 4px 7px; min-width: 28px; }
#labBar .lab-tractbar .seg button:first-child { border-radius: 6px 0 0 6px; margin-left: 0; }
#labBar .lab-tractbar .seg button:last-child { border-radius: 0 6px 6px 0; }
#labBar .lab-tractbar .seg button.on { background: color-mix(in srgb, var(--gold) 26%, transparent); color: var(--vellum); }
@media (max-width: 600px) {
  .lab-col-h button.hd span { display: none; }
  .lab-col-h button.hd svg.ti { margin-right: 0; }
  .lab-tract { height: 210px; }
  .lab-col.focused .lab-tract { height: min(62vw, 300px); }
  .lab-dheads { gap: 6px; }
  .lab-dhead .lab-tract { height: 190px; }
}

/* the Voice design pane (lab-voice.js): beside the columns, a sheet from below on a phone */
body.lab-vp-open #lab { grid-template-columns: minmax(0, 1fr) 312px; }
body.lab-vp-open #labBar { grid-column: 1 / -1; }
body.lab-vp-open #labMain { grid-column: 1; grid-row: 2; }
#labVoice { grid-column: 2; grid-row: 2 / span 2; min-height: 0; overflow-y: auto; border-left: 1px solid var(--line); background: var(--stone); padding: 10px 14px 16px; scrollbar-width: thin; }
#labVoice[hidden] { display: none; }
#labVoice .lv-h { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
#labVoice h2 { margin: 0; font: 500 18px var(--display); color: var(--vellum); }
#labVoice .lv-x { font-size: 18px; line-height: 1; padding: 2px 9px; }
#labVoice .lv-body { display: grid; gap: 6px; align-content: start; margin-top: 6px; }
#labVoice .lv-what { margin: 0; font-size: 12px; color: var(--dim); white-space: normal; }
#labVoice h3 { margin: 8px 0 0; font-size: 14px; font-weight: 500; color: var(--vellum); border-top: 1px solid var(--line); padding-top: 8px; display: flex; justify-content: space-between; align-items: center; gap: 6px; }
#labVoice .row { display: grid; grid-template-columns: 64px minmax(0, 1fr) 58px; align-items: center; gap: 6px; }
#labVoice .row select { grid-column: 2 / span 2; width: 100%; min-width: 0; box-sizing: border-box; font-size: 13px; }
#labVoice .row output { font-family: var(--mono); font-size: 11px; color: var(--dim); text-align: right; }
#labVoice input[type=range] { width: 100%; }
#labVoice .sub { display: flex; justify-content: space-between; align-items: center; gap: 6px; }
#labVoice button { font-size: 12px; padding: 3px 9px; }
#labVoice .svBank { flex-wrap: wrap; }
#labVoice .svBank span { display: inline-flex; gap: 4px; }
#labVoice .svName input { flex: 1; min-width: 0; font-size: 13px; padding: 3px 6px; }
#labVoice .lv-open { font-size: 12px; color: var(--dim); border-top: 1px solid var(--line); padding-top: 8px; margin-top: 4px; }
#labVoice .lv-open summary { cursor: pointer; }
#labVoice .lv-open p { margin: 6px 0 0; line-height: 1.45; }
#labVoice .lv-foot { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
#labBar #labDesign.on { box-shadow: inset 0 0 0 2px var(--vellum); }
@media (max-width: 760px) {
  body.lab-vp-open #lab { grid-template-columns: minmax(0, 1fr); }
  #labVoice { position: fixed; left: 0; right: 0; bottom: 0; z-index: 40; max-height: 62vh; border-left: 0; border-top: 1px solid var(--gold); border-radius: 12px 12px 0 0; box-shadow: 0 -10px 30px #000a; padding-bottom: max(16px, env(safe-area-inset-bottom, 0px)); }
  #labVoice .row select { font-size: 16px; }
}

/* the Lab's room: its button (lit when heard) and popover */
.lab-room { position: relative; display: inline-flex; }
#labRoom.on { color: #9fd0e0; border-color: #4f7f8f; }
#labRoomPop { position: absolute; left: 0; top: calc(100% + 4px); z-index: 31; display: grid; gap: 6px; min-width: 210px; padding: 8px 10px; background: var(--stone-2); border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 8px 24px #0008; }
#labRoomPop[hidden] { display: none; }
#labRoomPop .row { display: grid; grid-template-columns: 56px minmax(0, 1fr) 36px; align-items: center; gap: 6px; font-size: 12px; }
#labRoomPop .row:first-child { display: flex; }
#labRoomPop output { font: 11px var(--mono); text-align: right; }
@media (max-width: 600px) { #labRoomPop { left: auto; right: 0; max-width: calc(100vw - 32px); } }

/* zoom to the playing column (lab-zoom.js): the column sounding over the stage, the rest faded behind */
#labZoom.on { color: var(--gold); border-color: color-mix(in srgb, var(--gold) 60%, var(--line)); }
#labZoom:not(.on) { border-style: dashed; opacity: .85; }
.lab-col, .lab-dcol, #labDiff > .dsel, #labDiff > .lab-dheads, #labDiff > .lab-dt { transition: opacity .32s ease, transform .32s ease; }
#labCols.zooming > .lab-col:not(.zoom):not(.zoom-out),
#labDiff.zooming > :not(.zoom):not(.zoom-out):not(.lab-col-ph) { opacity: 0.08; transform: scale(0.97); pointer-events: none; }
.lab-col-ph { min-width: 0; border-radius: 10px; }
#lab .lab-col.zoom, #lab .lab-dcol.zoom { position: fixed; z-index: 15; margin: 0; box-sizing: border-box; overflow: hidden; display: grid;
  grid-template-columns: minmax(0, 1fr); grid-template-rows: none; grid-template-areas: none; align-content: start; gap: 8px;
  padding: 10px var(--zpad, 16px) 12px; border-color: var(--gold); box-shadow: 0 18px 50px #000b; will-change: transform; }
#lab .zoom-out { z-index: 14; }
#labCols.focus > .lab-col.zoom { display: grid; }
#lab .lab-col.zoom > * { grid-area: auto; }
#lab .lab-col.zoom > :is(.lab-legend, .lab-trace, .lab-rules, .lab-rangebar, .lab-report), #lab .zoom .sono-read, #lab .zoom .sono-foot, #lab .lab-dcol.zoom .lab-rangebar { display: none; }
#lab .lab-col.zoom > .lab-col-h { position: static; margin: 0; padding: 0; box-shadow: none; background: none; }
#lab .lab-col.zoom .lab-col-h select.lang { font-size: 19px; max-width: 320px; }
#lab .lab-dcol.zoom .dh { font-size: 19px; }
#lab .zoom > .lab-tract { height: var(--zhh, 34%); }
#lab .zoom .lab-ipa { font-size: 32px; line-height: 1.25; }
#lab .zoom svg .bl { font-size: 15px; }
#lab .zoom svg .lanel { font-size: 11.5px; }
#lab .zoom svg .tkl, #lab .zoom svg .votl { font-size: 10.5px; }
#lab .zoom svg .unrel-m { font-size: 15px; }
/* wide: the head beside the displays, as tall as the stage */
#lab .zoom.zoom-side { grid-template-columns: var(--zhw) minmax(0, 1fr); grid-template-rows: auto auto minmax(0, 1fr); grid-template-areas: "h h" "trc ipa" "trc viz"; column-gap: 16px; }
#lab .zoom-side > :is(.lab-col-h, .dh) { grid-area: h; }
#lab .zoom-side > .lab-tract { grid-area: trc; height: auto; min-height: 0; align-self: stretch; }
#lab .zoom-side > .lab-ipa { grid-area: ipa; }
#lab .zoom-side > .lab-viz { grid-area: viz; }
@media (max-width: 600px) {
  #lab .zoom .lab-ipa { font-size: 24px; }
  #lab .zoom svg .bl { font-size: 13px; }
  #lab .lab-col.zoom .lab-col-h select.lang { font-size: 16px; max-width: 200px; }
}
@media (prefers-reduced-motion: reduce) {
  .lab-col, .lab-dcol, #labDiff > * { transition: none; }
}