/* The Lab Games practice shell (shared/practice/README.md). Colors, type and spacing come from /tokens.css, so dark
 * mode (html[data-theme="dark"]) works with no extra rules. An activity sets its accent with theme.accent.
 * Chromebook first: at 1366x768 the Play screen fits the window with no page scroll. */
.ps {
  --ps-accent: var(--tlg-primary);
  --ps-accent-ink: var(--tlg-on-solid);
  --ps-top-h: 72px;
  --ps-side-w: 300px;
  position: relative;
  min-height: 100vh; min-height: 100dvh;
  background: var(--tlg-bg);
  color: var(--tlg-text);
  font-family: var(--tlg-font);
  font-size: var(--tlg-text-md);
  line-height: var(--tlg-leading-body);
  box-sizing: border-box;
}
.ps *, .ps *::before, .ps *::after { box-sizing: border-box; }
body:has(> .ps), body:has(> main.ps) { margin: 0; }
/* On html too: the assignment card (.lga-card, end of this section) is a child of <body>, outside .ps. */
:root, .ps { --ps-actions-h: 68px; }
html.ps-locked, html.ps-locked body { overflow: hidden; height: 100%; }
.ps [hidden] { display: none !important; }
.ps-muted { color: var(--tlg-text-muted); font-weight: var(--tlg-weight-regular); }
.ps-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.ps a { color: var(--tlg-link); font-weight: var(--tlg-weight-bold); }
.ps :focus-visible { outline: var(--tlg-focus-width) solid var(--tlg-focus); outline-offset: var(--tlg-focus-offset); }

/* buttons */
.ps-btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: var(--tlg-tap); min-width: var(--tlg-tap);
  padding: 8px 18px; border-radius: var(--tlg-radius-sm); border: var(--tlg-border-width-strong) solid var(--tlg-border-strong);
  background: var(--tlg-surface); color: var(--tlg-text); font: inherit; font-weight: var(--tlg-weight-bold); cursor: pointer; text-decoration: none;
  transition: background var(--tlg-ease), transform var(--tlg-ease); user-select: none; -webkit-user-select: none; touch-action: manipulation; }
.ps-btn:hover:not(:disabled) { background: var(--tlg-surface-2); }
.ps-btn:active:not(:disabled) { transform: translateY(1px); }
.ps-btn:disabled { opacity: .5; cursor: default; }
.ps-btn--primary { background: var(--ps-accent); border-color: var(--ps-accent); color: var(--ps-accent-ink); }
.ps-btn--primary:hover:not(:disabled) { background: var(--ps-accent); filter: brightness(1.1); }
.ps-btn--ghost { background: transparent; }
.ps-btn--big { min-height: 52px; padding: 10px 24px; font-size: var(--tlg-text-lg); }
.ps-chip { min-height: var(--tlg-tap); padding: 6px 16px; border-radius: var(--tlg-radius-full); border: var(--tlg-border-width-strong) solid var(--tlg-border-strong);
  background: var(--tlg-surface); color: var(--tlg-text); font: inherit; font-weight: var(--tlg-weight-bold); cursor: pointer; }
.ps-chip[aria-checked="true"] { background: var(--ps-accent); border-color: var(--ps-accent); color: var(--ps-accent-ink); }
.ps-badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 10px; border-radius: var(--tlg-radius-full); font-size: var(--tlg-text-sm); font-weight: var(--tlg-weight-bold); line-height: 1.6; }
.ps-badge--sm { background: #fdf3c4; color: #6b4e00; }
.ps-badge--soft { background: var(--tlg-surface-2); color: var(--tlg-text-muted); }
.ps-badge--practice { background: var(--tlg-status-progress-bg); color: var(--tlg-status-progress-fg); }
.ps-badge--held { background: var(--tlg-primary-tint); color: var(--tlg-primary); }
html[data-theme="dark"] .ps-badge--sm { background: #4a3b05; color: #fde68a; }

/* ── Start + Briefing page ── */
.ps-start, .ps-briefpage { min-height: 100vh; min-height: 100dvh; padding: 72px 16px 32px; display: flex; justify-content: center; align-items: flex-start; }
.ps-start-card { display: grid; grid-template-columns: minmax(260px, 420px) minmax(300px, 560px); gap: 32px; align-items: center; width: min(1100px, 100%);
  background: var(--tlg-surface); border: var(--tlg-border-width) solid var(--tlg-border); border-radius: var(--tlg-radius-lg); padding: 28px; box-shadow: var(--tlg-shadow-2, 0 6px 24px rgb(0 0 0 / .08)); }
.ps-start-art { aspect-ratio: 1 / 1; border-radius: var(--tlg-radius-lg); overflow: hidden; background: var(--tlg-surface-2); }
.ps-start-art svg { display: block; width: 100%; height: 100%; }
.ps-start-copy h1 { font-size: var(--tlg-text-3xl); line-height: var(--tlg-leading-heading); margin: 0 0 8px; }
.ps-kicker { margin: 0 0 4px; text-transform: uppercase; letter-spacing: var(--tlg-tracking-caps); font-size: var(--tlg-text-sm); font-weight: var(--tlg-weight-bold); color: var(--ps-accent); }
html[data-theme="dark"] .ps-kicker { color: var(--tlg-text-muted); }
.ps-tagline { font-size: var(--tlg-text-lg); margin: 0 0 16px; }
.ps-goal-line { font-size: var(--tlg-text-xl); margin: 12px 0 4px; }
.ps-rules, .ps-sm-line { margin: 6px 0; }
.ps-field { margin: 12px 0; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.ps-field-label { font-weight: var(--tlg-weight-bold); }
.ps-levels { display: flex; gap: 8px; }
.ps-start-btns { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 20px; }
.ps-brief-wrap { width: min(860px, 100%); background: var(--tlg-surface); border: var(--tlg-border-width) solid var(--tlg-border); border-radius: var(--tlg-radius-lg); padding: 28px; }
.ps-brief-h { margin: 0 0 12px; font-size: var(--tlg-text-2xl); }
.ps-brief-h:focus { outline: none; }
.ps[data-screen="brief"] .ps-briefpage { overflow-y: auto; }

/* Briefing content (page and drawer) */
.ps-brief-p { margin: 0 0 12px; max-width: var(--tlg-prose); }
.ps-brief b { color: var(--tlg-text); }
.ps-brief-sec { margin-top: 18px; }
.ps-brief-sec h3, .ps-brief-sec h4 { margin: 0 0 8px; font-size: var(--tlg-text-lg); }
.ps-brief-steps { margin: 0; padding-left: 24px; }
.ps-brief-steps li { margin: 4px 0; }
.ps-brief-exgrid { display: grid; grid-template-columns: minmax(200px, 300px) 1fr; gap: 16px; align-items: start; }
.ps-brief--drawer .ps-brief-exgrid { grid-template-columns: 1fr; }
.ps-brief-exstage { background: var(--tlg-surface-2); border-radius: var(--tlg-radius-sm); padding: 8px; }
.ps-brief-exstage svg { display: block; width: 100%; height: auto; max-height: 360px; }
.ps-brief-example.is-wide .ps-brief-exgrid { grid-template-columns: minmax(0, 1fr); }
.ps-brief-example.is-wide .ps-brief-exstage svg { max-height: 460px; }
.ps-brief-exsteps ol { margin: 0; padding-left: 22px; }
.ps-brief-answer { margin: 8px 0 0; font-size: var(--tlg-text-lg); }
.ps-brief-idea { border-left: 4px solid var(--tlg-border); padding: 4px 12px; margin: 8px 0; border-radius: 0 var(--tlg-radius-sm) var(--tlg-radius-sm) 0; }
.ps-brief-idea h5 { margin: 0; font-size: var(--tlg-text-md); }
.ps-brief-idea p { margin: 2px 0 0; }
.ps-brief-idea.is-coach { border-left-color: var(--ps-accent); background: var(--tlg-primary-tint); }
html[data-theme="dark"] .ps-brief-idea.is-coach { background: var(--tlg-surface-2); }

/* ── Top bar (Play) ── */
.ps-top { position: fixed; inset: 0 0 auto 0; height: var(--ps-top-h); z-index: 20; display: grid; grid-template-columns: minmax(0, auto) minmax(0, 1fr) auto; align-items: center; gap: 16px;
  padding: 0 12px 0 132px; background: var(--tlg-surface); border-bottom: var(--tlg-border-width) solid var(--tlg-border); }
.ps-top-block { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.ps-top-block svg { display: block; }
.ps-top-lead { display: flex; align-items: center; gap: 14px; min-width: 0; }
.ps-top-assign:empty { display: none; }
.ps-start-assign:has(.ps-top-assign:empty) { display: none; }
.ps-start-assign { margin-bottom: 12px; }
.ps-top-title { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.ps-top-name { font-weight: var(--tlg-weight-bold); font-size: var(--tlg-text-lg); white-space: nowrap; }
.ps-top-place { font-size: var(--tlg-text-md); color: var(--tlg-text-muted); white-space: nowrap; }
/* a long title shrinks (ellipsis) instead of pushing Briefing off the bar; on narrow screens it wraps (below) */
.ps-top-name, .ps-top-place { overflow: hidden; text-overflow: ellipsis; }
.ps-top-tools { display: flex; align-items: center; gap: 8px; }
.ps-turnin { display: flex; align-items: center; }
.ps-turnin .lgt-btn { min-height: var(--tlg-tap); padding: 8px 16px; border-radius: var(--tlg-radius-sm); background: var(--ps-accent); border: 2px solid var(--ps-accent); box-shadow: none; font-family: var(--tlg-font); font-size: var(--tlg-text-md); }
.ps-turnin .lgt-stat { font-family: var(--tlg-font); color: var(--tlg-status-done-fg); }

/* streak meter */
.ps-meter { min-width: 0; display: flex; flex-direction: column; gap: 2px; max-width: 640px; justify-self: center; width: 100%; }
.ps-meter-row { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; line-height: 1.1; }
.ps-meter-text { font-size: var(--tlg-text-md); white-space: nowrap; }
.ps-streak-num { font-size: var(--tlg-text-xl); color: var(--ps-accent); }
html[data-theme="dark"] .ps-streak-num { color: var(--tlg-text); }
.ps-pips { display: flex; gap: 4px; }
.ps-pip { flex: 1; height: 12px; border-radius: 6px; background: var(--tlg-surface-3); border: 1px solid var(--tlg-border); }
.ps-pips.is-dense .ps-pip { height: 10px; border-radius: 3px; }
.ps-pip.is-on { background: var(--ps-accent); border-color: var(--ps-accent); }
.ps-pip.is-new { animation: ps-pop .45s ease-out; }
.ps-confirm .ps-confirm-card { width: min(420px, 100%); }
/* run dots (scoring v2): one per question; ✓ right (round), ✗ wrong (square), ✓ in a dashed ring = right after a hint */
.ps-dots .ps-dot { height: 16px; display: flex; align-items: center; justify-content: center; font-size: 12px; line-height: 1; font-weight: var(--tlg-weight-bold); border-radius: 8px; }
.ps-dots.is-dense .ps-dot { height: 14px; font-size: 0; border-radius: 7px; }
.ps-dot.is-c { background: var(--tlg-status-done-fg); border-color: var(--tlg-status-done-fg); color: var(--tlg-surface); }
.ps-dot.is-h { background: var(--tlg-status-done-bg); border: 2px dashed var(--tlg-status-done-fg); color: var(--tlg-status-done-fg); }
.ps-dot.is-x { background: #a3241f; border-color: #a3241f; color: #fff; border-radius: 3px; }
html[data-theme="dark"] .ps-dot.is-x { background: #e0665f; border-color: #e0665f; color: #1b0a09; }
.ps-dot.is-cur { border: 2px solid var(--ps-accent); background: var(--tlg-surface); }
.ps-dots.is-dense .ps-dot.is-x { border-radius: 2px; }
.ps-again .ps-again-note { color: inherit; opacity: .85; font-weight: var(--tlg-weight-normal, 400); }
.ps-again-note:empty { display: none; }
@keyframes ps-pop { 0% { transform: scaleY(1.9); } 100% { transform: none; } }
/* 16 px text, line heights trimmed so the whole meter fits the 72 px top bar at 1366×768 */
.ps-meter-sub { display: flex; gap: 8px; align-items: center; font-size: var(--tlg-text-md); line-height: 1.2; }
.ps-meter-sub .ps-badge { padding: 0 10px; line-height: 1.2; font-size: inherit; min-width: 0; }
.ps-sm-mini { color: var(--tlg-text-muted); font-weight: var(--tlg-weight-bold); margin-left: auto; }
.ps-sm-mini.is-earned { color: #8a6500; }
html[data-theme="dark"] .ps-sm-mini.is-earned { color: #fde68a; }
.ps-tier { display: inline-flex; gap: 2px; align-items: flex-end; }
.ps-tier i { width: 6px; height: 8px; background: var(--tlg-surface-3); border-radius: 2px; }
.ps-tier i:nth-child(2) { height: 12px; } .ps-tier i:nth-child(3) { height: 16px; }
.ps-tier i.is-on { background: var(--tlg-text-muted); }

/* ── Play ── */
.ps-play { position: fixed; inset: var(--ps-top-h) 0 0 0; display: grid; grid-template-columns: var(--ps-side-w) minmax(0, 1fr); grid-template-rows: minmax(0, 1fr) var(--ps-actions-h); }
.ps-side { grid-row: 1; grid-column: 1; overflow-y: auto; padding: 12px; display: flex; flex-direction: column; gap: 10px; border-right: var(--tlg-border-width) solid var(--tlg-border); background: var(--tlg-surface); }
.ps-stage { grid-row: 1; grid-column: 2; min-width: 0; min-height: 0; position: relative; overflow: hidden; }
.ps-actions { grid-row: 2; grid-column: 1 / -1; display: flex; align-items: center; gap: 12px; padding: 0 16px; background: var(--tlg-surface); border-top: var(--tlg-border-width) solid var(--tlg-border); }
.ps-actions-l { display: flex; align-items: center; gap: 10px; }
.ps-nudge { flex: 1; text-align: right; max-width: 30%; margin-left: auto; font-weight: var(--tlg-weight-bold); color: var(--tlg-status-progress-fg); }
.ps-main { min-width: 210px; min-height: 52px; font-size: var(--tlg-text-lg); }
.ps-main.is-next { background: var(--tlg-text); border-color: var(--tlg-text); color: var(--tlg-surface); }

.ps-cust-head { display: flex; align-items: center; gap: 10px; }
.ps-avatar { width: 72px; height: 72px; flex: none; }
.ps-avatar svg { width: 100%; height: 100%; display: block; }
.ps-cust-who { display: flex; flex-direction: column; line-height: 1.25; }
.ps-cust-who .ps-muted { font-size: 16px; }
.ps-bubble { position: relative; margin-top: 10px; padding: 10px 12px; border-radius: var(--tlg-radius-lg); background: var(--tlg-surface-2); border: var(--tlg-border-width) solid var(--tlg-border); font-size: var(--tlg-text-md); }
.ps-bubble::before { content: ""; position: absolute; top: -9px; left: 28px; border: 9px solid transparent; border-top: 0; border-bottom-color: var(--tlg-border); }
.ps-bubble::after { content: ""; position: absolute; top: -7px; left: 29px; border: 8px solid transparent; border-top: 0; border-bottom-color: var(--tlg-surface-2); }
.ps-cust-detail { margin: 0; font-size: var(--tlg-text-md); color: var(--tlg-text-muted); }
.ps-hint { padding: 10px 12px; border-radius: var(--tlg-radius-sm); background: #fff8db; border: 1px solid #e9d27a; color: #3d3000; font-size: var(--tlg-text-md); }
html[data-theme="dark"] .ps-hint { background: #3a3108; border-color: #7a6514; color: #fdf0c0; }
.ps-hint-note { display: block; margin-top: 4px; font-size: var(--tlg-text-sm); color: inherit; opacity: .85; }
.ps-feedback { padding: 10px 12px; border-radius: var(--tlg-radius-sm); border: 2px solid; }
.ps-feedback.is-ok { background: var(--tlg-status-done-bg); border-color: var(--tlg-status-done-fg); color: var(--tlg-status-done-fg); }
.ps-feedback.is-bad { background: #fde8e7; border-color: #a3241f; color: #6e1814; }
html[data-theme="dark"] .ps-feedback.is-bad { background: #3b1513; color: #ffd2cf; border-color: #e0665f; }
.ps-feedback p { margin: 0 0 6px; }
.ps-fb-title { font-size: var(--tlg-text-xl); font-weight: var(--tlg-weight-bold); }
.ps-fb-say { font-style: italic; }
.ps-fb-why, .ps-fb-explain { color: var(--tlg-text); }
.ps-fb-explain { margin: 6px 0; font-size: var(--tlg-text-md); }
.ps-fb-held { font-size: 16px; line-height: 1.3; margin: 0; }

/* ── Done (a card over Play) ── */
.ps-done { position: fixed; inset: 0; z-index: 40; display: flex; align-items: flex-start; justify-content: center; overflow-y: auto; padding: 16px; background: var(--tlg-scrim); }
/* no inner scroll box: the card grows (Learn More links on Done) and the backdrop scrolls if the screen is short */
.ps-done-card { width: min(640px, 100%); margin: auto 0; background: var(--tlg-surface); border-radius: var(--tlg-radius-lg); padding: 24px 28px; box-shadow: 0 20px 60px rgb(0 0 0 / .35); }
.ps-done-card .tlgfr-inline { margin: 20px 0 0; padding: 14px 0 0; border: 0; border-top: var(--tlg-border-width) solid var(--tlg-border); border-radius: 0; }
.ps-done-card .tlgfr-inline-h { font-size: var(--tlg-text-lg); }
.ps-drawer-more { padding: 8px 16px 12px; }
.ps-drawer-more .ps-learn-more[hidden] { display: none; }
.ps-done-card h2 { margin: 0 0 4px; font-size: var(--tlg-text-2xl); }
.ps-done-score { font-size: var(--tlg-text-xl); margin: 4px 0 12px; }
.ps-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 0 0 12px; }
.ps-stats div { background: var(--tlg-surface-2); border-radius: var(--tlg-radius-sm); padding: 8px 10px; }
.ps-stats dt { font-size: var(--tlg-text-sm); color: var(--tlg-text-muted); }
.ps-stats dd { margin: 0; font-weight: var(--tlg-weight-bold); }
.ps-done-status { margin: 8px 0; }
.ps-done-btns { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.ps-related { margin-top: 20px; padding-top: 14px; border-top: var(--tlg-border-width) solid var(--tlg-border); }
.ps-related-k { margin: 0 0 8px; font-weight: var(--tlg-weight-bold); }
.ps-related-btns { display: flex; flex-wrap: wrap; gap: 10px; }
.ps-related-btn { text-decoration: none; }
.ps-related-btn:disabled { opacity: .55; cursor: default; }
.ps-done-retake .lg-retake { margin: 0; }
.ps-done-retake .lg-retake button { background: var(--ps-accent); box-shadow: none; border-color: var(--ps-accent); }

/* ── Briefing drawer ── */
.ps-drawer { position: fixed; top: 0; right: 0; bottom: 0; z-index: 30; width: min(480px, 94vw); background: var(--tlg-surface); border-left: var(--tlg-border-width) solid var(--tlg-border);
  box-shadow: -12px 0 40px rgb(0 0 0 / .2); display: flex; flex-direction: column; animation: ps-slide .2s ease-out; }
@keyframes ps-slide { from { transform: translateX(40px); opacity: 0; } to { transform: none; opacity: 1; } }
.ps-drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; border-bottom: var(--tlg-border-width) solid var(--tlg-border); }
.ps-drawer-head h2 { margin: 0; font-size: var(--tlg-text-xl); }
.ps-drawer-body { overflow-y: auto; padding: 4px 16px 16px; flex: 1; }
.ps-drawer-note { margin: 0; padding: 8px 16px; border-top: var(--tlg-border-width) solid var(--tlg-border); font-size: var(--tlg-text-sm); }
.ps-coach { margin: 10px 16px 0; padding: 10px 12px; background: var(--tlg-primary-tint); color: var(--tlg-text); border-radius: var(--tlg-radius-sm); border-left: 4px solid var(--ps-accent); }
html[data-theme="dark"] .ps-coach { background: var(--tlg-surface-2); }

/* toast + burst */
.ps-toast { position: fixed; left: 50%; top: calc(var(--ps-top-h) + 12px); transform: translateX(-50%); z-index: 50; max-width: min(560px, calc(100vw - 32px));
  padding: 12px 18px; border-radius: var(--tlg-radius-lg); background: var(--tlg-space-navy); color: #fff; box-shadow: 0 10px 30px rgb(0 0 0 / .3); font-size: var(--tlg-text-md); }
.ps-toast a { color: #7fd8c9; }
.ps-toast.is-in { animation: ps-drop .3s ease-out; }
@keyframes ps-drop { from { transform: translate(-50%, -12px); opacity: 0; } to { transform: translateX(-50%); opacity: 1; } }
.ps-burst { position: fixed; left: 50%; top: 40%; z-index: 60; pointer-events: none; }
.ps-burst i { position: absolute; width: 10px; height: 10px; border-radius: 2px; animation: ps-burst 1.1s ease-out forwards; }
@keyframes ps-burst { from { transform: translate(0, 0) rotate(0); opacity: 1; } to { transform: translate(var(--dx), calc(var(--dy) + 80px)) rotate(400deg); opacity: 0; } }

/* ── numeric-input.js ── */
.pn { display: flex; flex-direction: column; gap: 8px; }
.pn-label { font-weight: var(--tlg-weight-bold); }
.pn-display { display: flex; align-items: center; gap: 8px; background: var(--tlg-surface); border: var(--tlg-border-width-strong) solid var(--tlg-border-strong); border-radius: var(--tlg-radius-sm); padding: 0 10px; }
.ps .pn-input:focus-visible { outline: none; }
.pn-display:focus-within { outline: var(--tlg-focus-width) solid var(--tlg-focus); outline-offset: 1px; }
.pn-input { flex: 1; min-width: 0; border: 0; background: transparent; color: var(--tlg-text); font: 700 30px/1.3 var(--tlg-font); padding: 6px 0; font-variant-numeric: tabular-nums; outline: none; }
.pn-unitshow { font-weight: var(--tlg-weight-bold); font-size: var(--tlg-text-xl); }
.pn-unitshow.is-empty { font-size: var(--tlg-text-md); color: var(--tlg-text-muted); font-weight: var(--tlg-weight-regular); }
.pn-units { display: flex; flex-wrap: wrap; gap: 6px; }
.pn-chip { min-height: 40px; min-width: 52px; padding: 4px 12px; border-radius: var(--tlg-radius-full); border: var(--tlg-border-width-strong) solid var(--tlg-border-strong); background: var(--tlg-surface); color: var(--tlg-text); font: inherit; font-weight: var(--tlg-weight-bold); cursor: pointer; }
.pn-chip[aria-checked="true"] { background: var(--ps-accent); border-color: var(--ps-accent); color: var(--ps-accent-ink); }
.pn-pad { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.pn-key { min-height: 50px; border-radius: var(--tlg-radius-sm); border: var(--tlg-border-width) solid var(--tlg-border-strong); background: var(--tlg-surface); color: var(--tlg-text);
  font: 700 22px/1 var(--tlg-font); cursor: pointer; touch-action: manipulation; user-select: none; -webkit-user-select: none; }
.pn-key:hover:not(:disabled) { background: var(--tlg-surface-2); }
.pn-key:active:not(:disabled) { transform: translateY(1px); background: var(--tlg-surface-3); }
.pn-key:disabled { opacity: .35; }
.pn-key--back, .pn-key--clear, .pn-key--neg { font-size: 16px; background: var(--tlg-surface-2); }
.pn-wide { grid-column: span 3; }
.pn.is-disabled { opacity: .7; }

/* ── live-graph.js ── */
.plg { display: flex; flex-direction: column; gap: 4px; }
.plg-canvas { width: 100%; display: block; border-radius: var(--tlg-radius-sm); }
.plg-legend { display: flex; flex-wrap: wrap; gap: 4px 12px; font-size: var(--tlg-text-md); }
.plg-key { display: inline-flex; align-items: center; gap: 6px; }
.plg-key i { width: 16px; height: 4px; border-radius: 2px; display: inline-block; }
.plg-key--band i { height: 10px; background: var(--tlg-status-done-bg); border: 1px solid var(--tlg-status-done-fg); }
.plg-key--sp i { height: 0; border-top: 2px dashed var(--tlg-status-done-fg); }

/* ── narrow screens (tablet portrait, phones): the page may scroll ── */
@media (max-width: 900px) {
  html.ps-locked, html.ps-locked body { overflow: auto; height: auto; }
  .ps-start-card { grid-template-columns: 1fr; padding: 20px; }
  .ps-start-art { max-width: 320px; }
  .ps-top { position: sticky; height: auto; grid-template-columns: minmax(0, 1fr) auto; padding: 8px 12px 8px 128px; gap: 8px; }
  .ps-top-name, .ps-top-place { white-space: normal; overflow-wrap: anywhere; }
  .ps-meter { grid-column: 1 / -1; grid-row: 2; max-width: none; }
  .ps-play { position: static; display: flex; flex-direction: column; }
  .ps-side { border-right: 0; border-bottom: var(--tlg-border-width) solid var(--tlg-border); max-height: none; overflow: visible; }
  .ps-stage { overflow: visible; min-height: 60vh; }
  .ps-actions { position: sticky; bottom: 0; min-height: var(--ps-actions-h); z-index: 10; }
  .ps-main { min-width: 160px; }
  .ps-book-label { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .ps *, .ps *::before, .ps *::after { animation: none !important; transition: none !important; }
}
@media print { .ps-top, .ps-actions, .ps-drawer, .ps-toast { display: none !important; } }
/* The assignment card (labgames-assignment.js) would sit on the Play screen's top-right buttons: move it to the empty
   corner above the action bar while playing. */
@media (min-width: 901px) { html.ps-locked .lga-card { top: auto; bottom: calc(var(--ps-actions-h) + 12px); right: 12px; } }

/* ═════════════ Components (shared/practice/components/). Their CSS lives here, not in the component files:
   every practice page already loads this file, and dark mode is handled by the --tlg-* tokens plus the
   html[data-theme="dark"] rules below. Activity CSS (loaded after this file) can override any of it. ═════════════ */

/* ── components/vector-tool.js (PracticeVectors, .pv-*) ── */
.pv-root{font-family:var(--tlg-font,system-ui,sans-serif)}
.pv-anchor{cursor:crosshair;outline:none}
.pv-anchor-ring{fill:#fff;stroke:#111827;stroke-width:2.5}
.pv-anchor-dot{fill:#111827}
.pv-anchor:focus-visible .pv-anchor-ring{stroke:#2563eb;stroke-width:4}
.pv-root.is-locked .pv-anchor{cursor:default}
.pv-arrow{cursor:pointer;outline:none}
.pv-root.is-locked .pv-arrow{cursor:default}
.pv-a-halo,.pv-c-halo,.pv-n-halo{stroke:#fff;stroke-width:11;stroke-linecap:round;opacity:.85}
.pv-a-shaft{stroke-width:6;stroke-linecap:round}
.pv-a-head{stroke-width:2;stroke-linejoin:round}
.pv-a-label,.pv-c-label,.pv-n-label,.pv-net-label{font-size:17px;font-weight:800;fill:#111827;paint-order:stroke;stroke:#fff;stroke-width:5px;stroke-linejoin:round;pointer-events:none}
.pv-arrow.is-sel .pv-a-halo{stroke:#fde047;stroke-width:15;opacity:1}
.pv-arrow:focus-visible .pv-a-halo{stroke:#93c5fd;stroke-width:16;opacity:1}
.pv-arrow.is-untyped .pv-a-shaft{stroke-dasharray:10 6}
.pv-arrow.is-untyped .pv-a-label{fill:#b91c1c}
.pv-arrow.is-dim{opacity:.38}
.pv-handle{fill:#fff;stroke:#111827;stroke-width:2.5;cursor:grab}
.pv-handle-hit{cursor:grab}
.pv-c-shaft{stroke-width:5;stroke-dasharray:9 6;stroke-linecap:round}
.pv-c-head{stroke-width:2;fill-opacity:.9}
.pv-n-shaft{stroke-width:4;stroke-dasharray:3 6;stroke-linecap:round}
.pv-n-head{fill-opacity:.85}
.pv-panel{display:flex;flex-direction:column;gap:8px}
.pv-row{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.pv-tip,.pv-k{font-size:16px;color:var(--tlg-text-muted,#4b5563)}
.pv-need{color:#b91c1c}
html[data-theme="dark"] .pv-need{color:#fca5a5}
.pv-addbtn{min-height:44px}
.pv-edit{display:flex;flex-direction:column;gap:6px;padding:8px;border:var(--tlg-border-width,1px) solid var(--tlg-border,#d1d5db);border-radius:var(--tlg-radius-sm,8px);background:var(--tlg-surface-2,#f8fafc)}
.pv-edit.is-empty .pv-types,.pv-edit.is-empty .pv-row{opacity:.5}
.pv-types{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px}
.pv-type{display:flex;align-items:center;gap:4px;min-height:44px;padding:3px 5px;border-radius:8px;border:2px solid var(--tlg-border,#d1d5db);border-left-width:7px;background:var(--tlg-surface,#fff);color:var(--tlg-text,#111827);font:inherit;font-size:16px;cursor:pointer;text-align:left;line-height:1.1}
.pv-type:disabled{cursor:default}
.pv-type[aria-checked="true"]{border-color:var(--ps-accent,#1f2937);box-shadow:inset 0 0 0 2px var(--ps-accent,#1f2937);font-weight:700}
.pv-type:focus-visible{outline:3px solid var(--tlg-focus,#2563eb);outline-offset:1px}
.pv-type-sym{flex:none;font-weight:800;min-width:24px}
.pv-type-name{min-width:0;font-size:16px;line-height:1.05;hyphens:auto}
.pv-sq{min-width:44px;min-height:44px;padding:0 6px;font-size:20px}
.pv-gap{flex:1}
.pv-val{width:76px;min-height:44px;padding:4px 8px;font:inherit;font-size:18px;font-weight:700;text-align:right;border-radius:8px;border:2px solid var(--tlg-border,#d1d5db);background:var(--tlg-surface,#fff);color:var(--tlg-text,#111827)}
.pv-unit{font-weight:700}
.pv-dir{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.pv-edit-head{font-size:16px;min-height:20px}
.pv-del{font-size:18px}
.pv-netlab{display:flex;align-items:center;gap:6px;font-size:16px;cursor:pointer;min-height:36px}
.pv-netbox{width:20px;height:20px}
.pv-netread{font-weight:700;font-size:16px}

/* ── components/slider-panel.js (PracticeSliders, .pss-*) ── */
.pss{display:flex;flex-direction:column;gap:10px;font-size:16px;color:var(--tlg-text,#15191f)}
.pss-title{margin:0;font-size:var(--tlg-text-md,16px);font-weight:800}
.pss-row{border:var(--tlg-border-width,1px) solid var(--tlg-border,#d3d9df);border-radius:var(--tlg-radius-lg,12px);background:var(--tlg-surface,#fff);padding:8px 10px 6px}
.pss-row.is-locked{background:var(--tlg-surface-2,#f1f3f5)}
.pss-head{display:flex;align-items:center;gap:8px;min-height:26px}
.pss-icon{width:24px;text-align:center;font-size:18px;flex:none}
.pss-label{font-weight:800;flex:1;min-width:0}
.pss-value{font-weight:800;font-variant-numeric:tabular-nums;padding:1px 10px;border-radius:999px;background:var(--tlg-surface-2,#f1f3f5);white-space:nowrap}
.pss-lockicon{font-size:16px}
.pss-ctl{display:grid;grid-template-columns:44px minmax(0,1fr) 44px;align-items:center;gap:6px;margin-top:4px}
.pss-step{min-width:44px;min-height:44px;border-radius:12px;border:var(--tlg-border-width,1px) solid var(--tlg-border-strong,#9aa4af);background:var(--tlg-surface,#fff);color:var(--tlg-text,#15191f);font:inherit;font-size:22px;font-weight:800;line-height:1;cursor:pointer;padding:0}
.pss-step:hover:not(:disabled){background:var(--tlg-surface-2,#f1f3f5)}
.pss-step:disabled{opacity:.4;cursor:not-allowed}
.pss-track{position:relative;height:44px;display:flex;align-items:center}
.pss-block{position:absolute;top:50%;height:14px;margin-top:-7px;border-radius:7px;pointer-events:none;background:repeating-linear-gradient(135deg,rgba(210,54,47,.55) 0 5px,rgba(210,54,47,.12) 5px 10px)}
.pss-range{-webkit-appearance:none;appearance:none;width:100%;height:44px;margin:0;background:transparent;cursor:pointer;position:relative}
.pss-range:disabled{cursor:not-allowed}
.pss-range::-webkit-slider-runnable-track{height:12px;border-radius:6px;background:linear-gradient(90deg,var(--pss-fill,#0e5e5a) var(--pss-pct,0%),var(--tlg-border,#d3d9df) var(--pss-pct,0%))}
.pss-range::-moz-range-track{height:12px;border-radius:6px;background:linear-gradient(90deg,var(--pss-fill,#0e5e5a) var(--pss-pct,0%),var(--tlg-border,#d3d9df) var(--pss-pct,0%))}
.pss-range::-webkit-slider-thumb{-webkit-appearance:none;width:32px;height:32px;margin-top:-10px;border-radius:50%;background:var(--tlg-surface,#fff);border:4px solid var(--pss-fill,#0e5e5a);box-shadow:0 1px 4px rgba(0,0,0,.3)}
.pss-range::-moz-range-thumb{width:26px;height:26px;border-radius:50%;background:var(--tlg-surface,#fff);border:4px solid var(--pss-fill,#0e5e5a);box-shadow:0 1px 4px rgba(0,0,0,.3)}
.pss-range:disabled::-webkit-slider-thumb{border-color:var(--tlg-text-muted,#3f4754)}
.pss-range:focus-visible{outline:var(--tlg-focus-width,3px) solid var(--tlg-focus,#2563eb);outline-offset:2px;border-radius:8px}
.pss-ticks{position:relative;height:20px;margin:-4px 66px 0 66px;font-size:16px;color:var(--tlg-text-muted,#3f4754)}
.pss-ticks span{position:absolute;transform:translateX(-50%);white-space:nowrap}
.pss-note{margin:2px 0 0;font-size:16px;line-height:1.3;color:var(--tlg-text-muted,#3f4754)}
.pss-note--lock{color:var(--tlg-text,#15191f);font-weight:700}
.pss-toggle{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;min-height:48px;margin-top:4px;padding:4px 6px 4px 12px;border-radius:12px;border:var(--tlg-border-width,1px) solid var(--tlg-border-strong,#9aa4af);background:var(--tlg-surface,#fff);color:var(--tlg-text,#15191f);font:inherit;font-weight:800;cursor:pointer}
.pss-toggle:disabled{cursor:not-allowed;opacity:.75}
.pss-toggle:focus-visible{outline:var(--tlg-focus-width,3px) solid var(--tlg-focus,#2563eb);outline-offset:2px}
.pss-switch{position:relative;width:64px;height:34px;border-radius:17px;background:var(--tlg-border,#d3d9df);flex:none;transition:background .15s}
.pss-switch::after{content:"";position:absolute;top:4px;left:4px;width:26px;height:26px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.35);transition:left .15s}
.pss-toggle[aria-checked="true"] .pss-switch{background:var(--pss-fill,#0e5e5a)}
.pss-toggle[aria-checked="true"] .pss-switch::after{left:34px}
.pss.is-disabled .pss-row:not(.is-locked){opacity:.7}

/* ── components/chain-builder.js (PracticeChain, .pcb-*) ── */
.pcb{display:flex;flex-direction:column;gap:8px;min-width:0;position:relative}
.pcb-h{margin:0;font-size:var(--tlg-text-md);font-weight:var(--tlg-weight-bold)}
.pcb-row{display:flex;align-items:stretch;gap:0;min-width:0;position:relative}
.pcb-slot{flex:1 1 0;min-width:0;display:flex;flex-direction:column;gap:4px;padding:6px;border-radius:var(--tlg-radius-sm);
border:2px dashed var(--tlg-border-strong);background:var(--tlg-surface-2);color:var(--tlg-text);font:inherit;text-align:left;cursor:pointer;
min-height:84px;position:relative;touch-action:manipulation;transition:background .15s,border-color .15s,box-shadow .2s}
.pcb-slot-label{font-size:var(--tlg-text-md);font-weight:var(--tlg-weight-bold);text-transform:uppercase;letter-spacing:.04em;color:var(--tlg-text-muted);display:flex;gap:6px;align-items:center}
.pcb-slot-label b{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--tlg-surface-3);color:var(--tlg-text);font-size:16px;letter-spacing:0}
.pcb-slot-empty{flex:1;display:grid;place-items:center;font-size:var(--tlg-text-md);color:var(--tlg-text-muted);border-radius:6px;min-height:40px}
.pcb-slot.is-filled{border-style:solid;border-color:var(--tlg-border-strong);background:var(--tlg-surface)}
.pcb-slot.is-locked{cursor:default;border-style:solid;background:var(--tlg-surface-3)}
.pcb-slot.is-target{border-color:var(--ps-accent,var(--tlg-primary));box-shadow:0 0 0 3px color-mix(in srgb,var(--ps-accent,var(--tlg-primary)) 35%,transparent)}
.pcb.is-picking .pcb-slot:not(.is-locked){border-color:var(--ps-accent,var(--tlg-primary))}
.pcb-slot.is-lit{box-shadow:0 0 0 3px var(--tlg-status-done-fg)}
.pcb-slot.is-ok{border-color:var(--tlg-status-done-fg);border-style:solid}
.pcb-slot.is-bad{border-color:#b42318;border-style:solid;background:#fde8e7}
html[data-theme="dark"] .pcb-slot.is-bad{background:#3b1513;border-color:#e0665f}
.pcb-mark{position:absolute;top:-10px;right:-8px;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-weight:900;font-size:15px;color:#fff;z-index:2;box-shadow:0 2px 6px rgb(0 0 0/.25)}
.pcb-mark.is-ok{background:var(--tlg-status-done-fg)}.pcb-mark.is-bad{background:#b42318}
.pcb-lock{font-size:16px;font-weight:var(--tlg-weight-bold);color:var(--tlg-text-muted);text-transform:none;letter-spacing:0;margin-left:auto}
.pcb-arrow{flex:0 0 26px;position:relative;align-self:center;height:26px}
.pcb-arrow::before{content:"";position:absolute;left:2px;right:9px;top:11px;height:4px;border-radius:2px;background:var(--tlg-text-muted)}
.pcb-arrow::after{content:"";position:absolute;right:1px;top:5px;border:8px solid transparent;border-right:0;border-left:10px solid var(--tlg-text-muted)}
.pcb-arrow.is-lit::before{background:var(--tlg-status-done-fg)}.pcb-arrow.is-lit::after{border-left-color:var(--tlg-status-done-fg)}
.pcb-pulse{position:absolute;left:0;top:7px;width:12px;height:12px;border-radius:50%;background:var(--ps-accent,var(--tlg-primary));box-shadow:0 0 0 3px var(--tlg-surface),0 0 10px var(--ps-accent,var(--tlg-primary));opacity:0;z-index:3;will-change:transform;pointer-events:none}
.pcb-loop{position:relative;height:26px;margin-top:-4px}
.pcb-loop-line{position:absolute;top:0;height:18px;border:4px solid var(--tlg-text-muted);border-top:0;border-radius:0 0 12px 12px}
.pcb-loop-line::after{content:"";position:absolute;left:-12px;top:-12px;border:10px solid transparent;border-top:0;border-bottom:12px solid var(--tlg-text-muted)}
.pcb-loop.is-lit .pcb-loop-line{border-color:var(--tlg-status-done-fg)}.pcb-loop.is-lit .pcb-loop-line::after{border-bottom-color:var(--tlg-status-done-fg)}
.pcb-loop-label{position:absolute;z-index:4;top:6px;transform:translateX(-50%);padding:0 10px;background:var(--tlg-bg);font-size:var(--tlg-text-md);font-weight:var(--tlg-weight-bold);white-space:nowrap;color:var(--tlg-text)}
.pcb-loop .pcb-pulse{top:0}
.pcb-tray-h{margin:2px 0 0;font-size:var(--tlg-text-md);font-weight:var(--tlg-weight-bold);color:var(--tlg-text-muted)}
.pcb-tray{display:flex;flex-wrap:wrap;gap:8px;min-height:52px;padding:2px}
.pcb-card{display:flex;align-items:center;gap:8px;min-height:46px;padding:4px 10px;border-radius:var(--tlg-radius-sm);border:2px solid var(--tlg-border-strong);
background:var(--tlg-surface);color:var(--tlg-text);font:inherit;font-size:16px;line-height:1.2;text-align:left;cursor:grab;touch-action:none;user-select:none;-webkit-user-select:none;
box-shadow:0 2px 0 var(--tlg-border);max-width:100%}
.pcb-card:hover{background:var(--tlg-surface-2)}
.pcb-card[aria-pressed="true"]{border-color:var(--ps-accent,var(--tlg-primary));box-shadow:0 0 0 3px color-mix(in srgb,var(--ps-accent,var(--tlg-primary)) 40%,transparent);transform:translateY(-2px)}
.pcb-card.is-used{display:none}
.pcb-card-ico{flex:none;width:30px;height:30px;display:grid;place-items:center}.pcb-card-ico svg{width:30px;height:30px;display:block}
.pcb-card-t{display:flex;flex-direction:column;min-width:0}.pcb-card-t b{font-weight:var(--tlg-weight-bold)}.pcb-card-t small{font-size:16px;color:var(--tlg-text-muted)}
.pcb-slot .pcb-chip{display:flex;align-items:center;gap:6px;padding:4px 6px;border-radius:6px;background:var(--tlg-surface-2);border:1px solid var(--tlg-border);font-size:16px;line-height:1.2;flex:1;cursor:grab;touch-action:none}
.pcb-slot.is-locked .pcb-chip{cursor:default;background:transparent;border-color:transparent}
.pcb-slot .pcb-chip .pcb-card-ico,.pcb-slot .pcb-chip .pcb-card-ico svg{width:24px;height:24px}
html .pcb-ghost{position:fixed;left:0;top:0;z-index:100;pointer-events:none;opacity:.92;box-shadow:0 10px 24px rgb(0 0 0/.3);will-change:transform;margin:0}
.pcb.is-disabled .pcb-card,.pcb.is-disabled .pcb-slot{cursor:default}
.pcb.is-disabled .pcb-tray{opacity:.55}
.pcb-slot.is-shake{animation:pcb-shake .3s}
@keyframes pcb-shake{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}
.pcb-note{align-self:flex-start;padding:1px 8px;border-radius:999px;background:var(--tlg-text);color:var(--tlg-surface);font-size:16px;font-weight:700}
.pcb-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@media (max-width:700px){.pcb-row{flex-direction:column}.pcb-arrow{transform:rotate(90deg);align-self:center}.pcb-loop{display:none}}
@media (prefers-reduced-motion:reduce){.pcb-slot.is-shake{animation:none}}

/* ── components/drag-zones.js (PracticeDragZones, .pdz-*) ── */
/* functional rules use html … so an activity's single-class reset (e.g. .mb-token { all: unset }) can't wipe them */
.pdz-token{cursor:grab}
html .pdz-token{touch-action:none;user-select:none;-webkit-user-select:none}
.pdz-token.is-disabled{cursor:default}
.pdz-token.is-picked{outline:4px dashed var(--ps-accent,#0e6e68);outline-offset:4px}
html .pdz-ghost{position:fixed;z-index:2147483000;pointer-events:none;margin:0;transition:none;filter:drop-shadow(0 8px 14px rgba(0,0,0,.35))}
html .pdz-ghost.is-back{transition:left .22s ease,top .22s ease}
html.pdz-armed .pdz-zone{outline:3px dashed rgba(14,110,104,.55);outline-offset:-3px;cursor:pointer}
.pdz-zone.is-over{outline:4px solid var(--ps-accent,#0e6e68)!important;outline-offset:-4px}
.pdz-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ── components/punnett-grid.js (PracticePunnett, .ppg-*) ── */
/* drag-critical rules (touch-action, user-select, the fixed ghost) use html … so an activity reset can’t wipe them */
.ppg{display:flex;flex-direction:column;gap:10px;min-width:0}
.ppg-tray{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:8px 10px;border-radius:var(--tlg-radius-sm,8px);background:var(--tlg-surface-2);border:var(--tlg-border-width,1px) solid var(--tlg-border)}
.ppg-tray-k{font-size:16px;font-weight:700;color:var(--tlg-text-muted);margin-right:2px}
.ppg-tray-sep{width:1px;align-self:stretch;background:var(--tlg-border-strong);margin:0 4px}
html .ppg-tile{touch-action:none;user-select:none;-webkit-user-select:none}
.ppg-tile{min-width:52px;min-height:48px;padding:4px 10px;border-radius:10px;border:2px solid var(--ps-accent,var(--tlg-primary));background:var(--tlg-surface);color:var(--tlg-text);font:700 22px/1 var(--tlg-font,system-ui);cursor:grab;box-shadow:0 2px 0 var(--ps-accent,var(--tlg-primary))}
.ppg-tile:hover:not(:disabled){transform:translateY(-1px)}
.ppg-tile:active:not(:disabled){transform:translateY(1px);box-shadow:none}
.ppg-tile:disabled{opacity:.55;cursor:default}
.ppg-tile:focus-visible,.ppg-slot:focus-visible,.ppg-box:focus-visible{outline:var(--tlg-focus-width,3px) solid var(--tlg-focus);outline-offset:2px}
.ppg sup{font-size:.62em;line-height:0;position:relative;top:-.5em;vertical-align:baseline;margin-left:1px}
.ppg-board{display:flex;flex-direction:column;align-items:flex-start;gap:6px}
.ppg-pline{display:flex;align-items:center;gap:6px;flex-wrap:wrap;font-size:16px}
.ppg-pline-k{min-width:150px;font-weight:700}
.ppg-pline-gap{width:10px}
.ppg-top{display:flex;align-items:flex-end;gap:6px;font-size:16px;font-weight:700}
.ppg-gridwrap{display:flex;align-items:center;gap:6px}
.ppg-side{writing-mode:vertical-rl;transform:rotate(180deg);font-size:16px;font-weight:700;white-space:nowrap}
.ppg-grid{display:grid;gap:4px}
.ppg-corner{display:grid;place-items:center;font-size:16px;color:var(--tlg-text-muted);text-align:center;line-height:1.1}
.ppg-slot,.ppg-gam{display:grid;place-items:center;border-radius:10px;font:700 22px/1 var(--tlg-font,system-ui);color:var(--tlg-text)}
.ppg-slot{border:2px dashed var(--tlg-border-strong);background:var(--tlg-surface);cursor:pointer;padding:0}
.ppg-slot.is-filled{border-style:solid;border-color:var(--ps-accent,var(--tlg-primary));background:color-mix(in srgb,var(--ps-accent,var(--tlg-primary)) 12%,var(--tlg-surface))}
.ppg-slot.is-target{box-shadow:0 0 0 4px color-mix(in srgb,var(--ps-accent,var(--tlg-primary)) 45%,transparent);border-color:var(--ps-accent,var(--tlg-primary))}
.ppg-slot.is-given{cursor:default;border-style:solid;border-color:var(--tlg-border-strong);background:var(--tlg-surface-2)}
.ppg-slot.is-over{outline:4px solid var(--ps-accent,var(--tlg-primary));outline-offset:2px}
.ppg-slot-q{color:var(--tlg-text-muted);font-weight:400}
.ppg-gam{background:color-mix(in srgb,var(--ps-accent,var(--tlg-primary)) 12%,var(--tlg-surface));border:2px solid var(--tlg-border-strong);font-size:18px}
.ppg-gam.is-empty{color:var(--tlg-text-muted);font-weight:400;border-style:dashed;background:var(--tlg-surface)}
.ppg-box{position:relative;display:grid;place-items:center;align-content:center;gap:2px;border-radius:10px;border:2px solid var(--tlg-border);background:var(--tlg-surface-2);color:var(--tlg-text);font:700 22px/1 var(--tlg-font,system-ui);padding:0;transition:background .2s}
.ppg-box:not(.is-filled){color:transparent;border-style:dashed}
.ppg--4 .ppg-box{font-size:16px}
.ppg-slot:disabled,.ppg-box.is-filled:disabled{opacity:1;color:var(--tlg-text)}
.ppg-box.is-filled:disabled{cursor:default}
.ppg-box.is-filled{background:color-mix(in srgb,var(--ppg-ph,var(--tlg-surface-2)) 55%,var(--tlg-surface));border-color:var(--tlg-border-strong);animation:ppg-pop .28s ease both}
.ppg.is-markable .ppg-box.is-filled{cursor:pointer}
.ppg-box-ph{font-size:14px;font-weight:600;color:var(--tlg-text-muted);max-width:100%;padding:0 3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ppg-box.is-marked{border-color:var(--ps-accent,var(--tlg-primary));box-shadow:inset 0 0 0 3px var(--ps-accent,var(--tlg-primary))}
.ppg-box.is-marked::after{content:"✓";position:absolute;top:2px;right:5px;font-size:15px;color:var(--ps-accent,var(--tlg-primary))}
html[data-theme="dark"] .ppg-box.is-marked::after{color:var(--tlg-text)}
.ppg-box.is-answer{border-color:#1a7f4b;box-shadow:inset 0 0 0 3px #1a7f4b}
.ppg-box.is-answer::before{content:"★";position:absolute;top:2px;left:5px;font-size:13px;color:#1a7f4b}
html[data-theme="dark"] .ppg-box.is-answer::before{color:#7ee2a8}
.ppg-box.is-wrong{border-color:#b42318;box-shadow:inset 0 0 0 3px #b42318}
.ppg-readout{margin:0;font-size:16px;line-height:1.35;min-height:1.35em}
.ppg-readout b{font-weight:700}
.ppg-readout-l{display:block}
.ppg-muted{color:var(--tlg-text-muted)}
.ppg.is-disabled .ppg-tile,.ppg.is-disabled .ppg-slot{cursor:default}
html .ppg-ghost{position:fixed;left:0;top:0;z-index:9999;pointer-events:none;margin:0;opacity:.92;transform-origin:center;box-shadow:0 8px 18px rgba(0,0,0,.3)}
@keyframes ppg-pop{from{transform:scale(.7);opacity:0}to{transform:none;opacity:1}}
@media (prefers-reduced-motion:reduce){.ppg-box.is-filled{animation:none}}

/* ── components/orbital-boxes.js (PracticeOrbitals, .pob-*) ── */
/* the bunk / dot / ghost rules use html … so an activity’s single-class button reset can’t wipe them. Size and color:
   --pob-up / --pob-down / --pob-bunk-h / --pob-box-w / --pob-gap on .pob */
.pob { --pob-up: var(--tlg-primary); --pob-down: #7c3aed; --pob-bunk-h: 38px; --pob-box-w: 50px; --pob-gap: 6px;
  display: flex; flex-direction: column; gap: 8px; color: var(--tlg-text); font-family: inherit; }
html[data-theme="dark"] .pob { --pob-down: #c4a5ff; }
.pob--sm { --pob-bunk-h: 22px; --pob-box-w: 30px; --pob-gap: 4px; gap: 4px; }
.pob-res { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; min-height: 34px; }
.pob-res-lbl { font-weight: var(--tlg-weight-bold); font-size: var(--tlg-text-md); }
.pob-res-dots { display: flex; flex-wrap: wrap; gap: 4px; flex: 1 1 200px; }
html .pob-dot { width: 24px; height: 24px; border-radius: 50%; border: 2px solid var(--tlg-border-strong); background: var(--tlg-surface);
  color: var(--tlg-text); font: inherit; font-weight: 900; font-size: 15px; line-height: 1; display: grid; place-items: center; padding: 0;
  cursor: grab; touch-action: none; user-select: none; -webkit-user-select: none; }
.pob-dot.is-used { opacity: .18; cursor: default; }
.pob-rows { display: flex; flex-direction: column; }
.pob-row { display: flex; align-items: flex-end; gap: 12px; padding: 6px 10px; border-top: 2px solid var(--tlg-border); }
.pob-row:first-child { border-top: 0; }
.pob-rowlbl { flex: none; width: 64px; align-self: center; font-weight: var(--tlg-weight-bold); line-height: 1.15; }
.pob-rowlbl small { display: block; font-weight: var(--tlg-weight-regular); font-size: 14px; color: var(--tlg-text-muted); }
.pob--sm .pob-rowlbl { width: 46px; font-size: 13px; }
.pob-subs { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 6px 16px; }
.pob--sm .pob-subs { gap: 4px 10px; }
.pob-sub { position: relative; display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 2px 4px 4px; border-radius: 8px; border: 2px solid transparent; }
.pob-sublbl { font-weight: 800; font-size: 16px; line-height: 1.2; }
.pob--sm .pob-sublbl { font-size: 13px; }
.pob-boxes { display: flex; gap: var(--pob-gap); }
.pob-box { width: var(--pob-box-w); display: flex; flex-direction: column; border: 3px solid var(--tlg-border-strong); border-radius: 8px; background: var(--tlg-surface); overflow: hidden; }
.pob--sm .pob-box { border-width: 2px; border-radius: 5px; }
html .pob-bunk { height: var(--pob-bunk-h); width: 100%; display: grid; place-items: center; margin: 0; padding: 0; border: 0; border-radius: 0; background: transparent;
  color: inherit; font: inherit; font-size: calc(var(--pob-bunk-h) * .72); font-weight: 900; line-height: 1; cursor: pointer;
  touch-action: none; user-select: none; -webkit-user-select: none; }
.pob-bunk + .pob-bunk { border-top: 2px dashed var(--tlg-border); }
.pob--ro .pob-bunk, .pob-bunk:disabled { cursor: default; }
.pob-bunk:hover:not(:disabled) { background: var(--tlg-surface-2); }
.pob-bunk:focus-visible { outline: var(--tlg-focus-width, 3px) solid var(--tlg-focus); outline-offset: -3px; position: relative; z-index: 1; }
.pob-bunk.is-drop { background: var(--tlg-primary-tint); box-shadow: inset 0 0 0 3px var(--tlg-primary); }
.pob-up { color: var(--pob-up); }
.pob-dn { color: var(--pob-down); }
.pob-empty { color: var(--tlg-border); font-size: 12px; }
.pob-sub.is-ok { border-color: var(--tlg-status-done-solid, #15803d); }
.pob-sub.is-bad { border-color: var(--tlg-danger-fg, #b91c1c); border-style: dashed; }
.pob-sub.is-hl { border-color: var(--tlg-focus); border-style: dashed; }
.pob-sub.is-locked .pob-box { background: var(--tlg-surface-2); }
.pob-badge { position: absolute; top: -9px; right: -9px; width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center;
  font-size: 12px; font-weight: 900; color: #fff; }
.pob-sub.is-ok .pob-badge { background: var(--tlg-status-done-solid, #15803d); }
.pob-sub.is-bad .pob-badge { background: var(--tlg-danger-fg, #b91c1c); }
html .pob-ghost { position: fixed; left: 0; top: 0; z-index: 1000; width: 34px; height: 34px; margin: -17px 0 0 -17px; border-radius: 50%; display: grid;
  place-items: center; background: var(--tlg-primary); color: #fff; font-weight: 900; font-size: 20px; pointer-events: none; box-shadow: 0 4px 12px rgb(0 0 0 / .3); }
.pob-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ── components/lewis-builder.js (PracticeLewis, .plw-*) ── */
/* the svg / tile / tray / ghost rules use html … so an activity’s single-class reset can’t wipe them (touch-action,
   user-select, the fixed drag ghost) */
.plw { position: relative; display: flex; flex-direction: column; gap: 6px; color: var(--tlg-text); font-family: var(--tlg-font, system-ui), system-ui, sans-serif; outline: none; }
.plw-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; min-height: 30px; }
.plw-counter { font-size: 16px; font-weight: 700; padding: 3px 12px; border-radius: var(--tlg-radius-full, 999px); background: var(--tlg-surface-2); border: 1px solid var(--tlg-border); font-variant-numeric: tabular-nums; }
.plw-counter b { font-size: 18px; }
.plw-counter.is-over { border-color: #c2410c; }
.plw-help { font-size: 16px; color: var(--tlg-text-muted, var(--tlg-muted)); }
.plw-stagewrap { position: relative; border-radius: 12px; }
.plw:focus-visible .plw-stagewrap { outline: var(--tlg-focus-width, 3px) solid var(--tlg-focus, #2563eb); outline-offset: 2px; }
html .plw-svg { display: block; touch-action: none; user-select: none; -webkit-user-select: none; overflow: visible; }
.plw-svg text { font-family: var(--tlg-font, system-ui), system-ui, sans-serif; pointer-events: none; }
.plw-sym { font-size: 21px; font-weight: 800; }
.plw-badge-c { fill: var(--tlg-surface); stroke: var(--tlg-border-strong); stroke-width: 1.5; }
.plw-badge-t { font-size: 16px; font-weight: 800; fill: var(--tlg-text); }
.plw-fc-t { font-size: 18px; font-weight: 800; fill: var(--tlg-text); paint-order: stroke; stroke: var(--tlg-surface); stroke-width: 4px; }
.plw-bond-l { stroke: var(--plw-bond, #2b2b2b); stroke-width: 4; stroke-linecap: round; }
.plw-bond.is-guide .plw-bond-l { stroke: var(--plw-guide, rgba(80, 90, 110, .55)); stroke-width: 2.5; stroke-dasharray: 6 7; }
.plw-bond-hit { stroke: transparent; stroke-width: 26; cursor: pointer; }
.plw-bond:hover .plw-bond-l { stroke: var(--ps-accent, #245e86); }
.plw-ro .plw-bond-hit, .plw-ro .plw-atom-hit { cursor: default; }
.plw-atom-hit { fill: transparent; cursor: pointer; }
.plw-ring { fill: none; stroke: transparent; stroke-width: 3; }
.plw-atom.is-focus .plw-ring { stroke: var(--tlg-focus, #2563eb); }
.plw-atom.is-anchor .plw-ring { stroke: var(--ps-accent, #245e86); stroke-dasharray: 5 4; }
.plw-atom.is-drop .plw-ring, .plw-atom.is-hl .plw-ring { stroke: var(--ps-accent, #245e86); stroke-dasharray: 4 4; }
.plw-atom.is-ok .plw-ring { stroke: #1f9d55; stroke-width: 4; }
.plw-atom.is-bad .plw-ring { stroke: #d03a2f; stroke-width: 4; }
.plw-mark-t { font-size: 20px; font-weight: 900; }
.plw-empty { fill: var(--tlg-surface); stroke: var(--tlg-border-strong); stroke-width: 2.5; stroke-dasharray: 6 5; }
.plw-empty-t { font-size: 20px; font-weight: 800; fill: var(--tlg-text-muted, #667); }
.plw-armed .plw-empty { stroke: var(--ps-accent, #245e86); stroke-width: 3; }
.plw-bead { stroke: #3a4a05; stroke-width: 1.3; }
.plw-band { stroke: var(--ps-accent, #245e86); stroke-width: 4; stroke-dasharray: 8 6; stroke-linecap: round; pointer-events: none; }
.plw-bracket { fill: none; stroke: var(--tlg-text); stroke-width: 3; }
.plw-charge { font-size: 24px; font-weight: 800; fill: var(--tlg-text); }
.plw-bin { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; min-height: 54px; }
.plw-bin-l { font-size: 16px; font-weight: 700; }
html .plw-tile { touch-action: none; user-select: none; -webkit-user-select: none; }
.plw-tile { display: inline-flex; align-items: center; justify-content: center; width: 50px; height: 50px; padding: 0; border-radius: 50%; border: 2px solid transparent; background: none; cursor: grab; font: inherit; }
.plw-tile svg { display: block; pointer-events: none; }
.plw-tile.is-picked { border-color: var(--ps-accent, #245e86); box-shadow: 0 0 0 3px var(--tlg-surface), 0 0 0 6px var(--ps-accent, #245e86); }
.plw-tile.is-used { visibility: hidden; }
.plw-tile:focus-visible { outline: var(--tlg-focus-width, 3px) solid var(--tlg-focus, #2563eb); outline-offset: 2px; }
.plw-tray { display: inline-flex; align-items: center; gap: 8px; padding: 4px 12px 4px 8px; border-radius: 12px; border: 2px dashed var(--tlg-border-strong); background: var(--tlg-surface); cursor: grab; font: inherit; color: inherit; font-size: 16px; }
html .plw-tray { touch-action: none; user-select: none; -webkit-user-select: none; }
.plw-tray svg { display: block; pointer-events: none; }
html .plw-ghost { position: fixed; z-index: 9999; pointer-events: none; transform: translate(-50%, -50%); }
.plw-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* assess mode preview (dev only): the results table on the Done card */
.ps-assess-card { max-width: min(960px, calc(100vw - 32px)); }
.ps-assess-scroll { max-height: 46vh; overflow: auto; margin: 12px 0; border: 1px solid var(--tlg-border, #d5dbe3); border-radius: 10px; }
.ps-assess-table { width: 100%; border-collapse: collapse; font-size: 0.86rem; text-align: left; }
.ps-assess-table th, .ps-assess-table td { padding: 6px 8px; border-bottom: 1px solid var(--tlg-border, #e3e7ee); vertical-align: top; }
.ps-assess-table code { font-size: 0.8rem; word-break: break-all; }

/* factor-cars.js */
.pfc{--pfc-car-w:100px;--pfc-crate:#fff8e8;--pfc-crate-edge:#8a6a3c;--pfc-ink:#1d1a14;color:var(--tlg-text);font-family:var(--tlg-font,system-ui)}
.pfc-track{position:relative;padding:6px 4px 0;border-radius:12px;outline:none}
.pfc-track:focus-visible{outline:var(--tlg-focus-width,3px) solid var(--tlg-focus,#2563eb);outline-offset:2px}
.pfc-track.is-over{background:color-mix(in srgb,var(--ps-accent,var(--tlg-primary)) 14%,transparent)}
.pfc-train{display:flex;align-items:flex-end;gap:0;min-height:120px}
.pfc-link{flex:none;width:10px;height:8px;margin-bottom:24px;background:#3b3f46;border-radius:2px;position:relative;align-self:flex-end}
.pfc-link.is-locking{animation:pfc-lock .35s ease-out}
@keyframes pfc-lock{0%{transform:scaleX(1.9)}60%{transform:scaleX(.7)}100%{transform:scaleX(1)}}
.pfc-engine,.pfc-caboose{flex:none;position:relative;display:flex;flex-direction:column;align-items:center;justify-content:flex-end}
.pfc-car{flex:none;position:relative;width:var(--pfc-car-w);display:flex;flex-direction:column;align-items:center;justify-content:flex-end;padding:0 0 22px;margin:0;border:0;background:transparent;color:inherit;font:inherit;cursor:pointer;border-radius:10px}
html .pfc-car{touch-action:none;user-select:none;-webkit-user-select:none}
.pfc-car:focus-visible{outline:var(--tlg-focus-width,3px) solid var(--tlg-focus,#2563eb);outline-offset:2px}
.pfc-car:disabled{cursor:default}
.pfc-car.is-used{opacity:.45;cursor:default}
.pfc-car.is-new{animation:pfc-in .35s ease-out}
@keyframes pfc-in{from{transform:translateX(26px);opacity:.2}to{transform:none;opacity:1}}
.pfc-car.is-flipping .pfc-frac{animation:pfc-flip .32s ease-out}
@keyframes pfc-flip{0%{transform:rotateX(90deg)}100%{transform:rotateX(0)}}
.pfc-art{position:absolute;inset:0;pointer-events:none}
.pfc-frac{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:0}
.pfc-crate{min-width:84px;padding:3px 6px 4px;border:2px solid var(--pfc-crate-edge);border-radius:5px;background:var(--pfc-crate);color:var(--pfc-ink);display:flex;flex-direction:column;align-items:center;line-height:1.1;box-shadow:inset 0 0 0 2px rgba(255,255,255,.45)}
.pfc-num{font-size:18px;font-weight:800;font-variant-numeric:tabular-nums;white-space:nowrap}
.pfc-unit{font-size:17px;font-weight:700;white-space:nowrap;display:flex;gap:4px}
.pfc-plank{width:92px;height:5px;margin:2px 0;background:#5a4630;border-radius:2px}
.pfc-tok{position:relative;display:inline-block}
.pfc-tag{margin-top:2px;padding:0 6px;border-radius:4px;background:#2f3640;color:#fff;font-size:16px;font-weight:700;line-height:1.25;white-space:nowrap}
.pfc-tok.is-struck{text-decoration:line-through;text-decoration-thickness:3px;text-decoration-color:var(--tlg-danger-fg,#b91c1c);opacity:.8}
.pfc-tok.is-puff::after{content:"";position:absolute;left:50%;top:50%;width:46px;height:34px;margin:-17px 0 0 -23px;border-radius:50%;pointer-events:none;
background:radial-gradient(circle at 30% 60%,rgba(255,255,255,.95) 0 28%,transparent 30%),radial-gradient(circle at 65% 45%,rgba(240,244,248,.95) 0 30%,transparent 32%),radial-gradient(circle at 50% 75%,rgba(226,232,240,.9) 0 26%,transparent 28%);
animation:pfc-puff .9s ease-out forwards}
@keyframes pfc-puff{0%{transform:scale(.3);opacity:0}25%{opacity:1}100%{transform:translateY(-30px) scale(1.6);opacity:0}}
.pfc-badge{position:absolute;top:-6px;right:4px;z-index:2;min-width:26px;height:26px;border-radius:13px;display:grid;place-items:center;font-size:16px;font-weight:800;color:#fff}
.pfc-badge.is-ok{background:#15803d}.pfc-badge.is-bad{background:#b91c1c}
.pfc-copies{position:absolute;top:-8px;left:2px;z-index:2;padding:1px 7px;border-radius:10px;background:var(--tlg-surface);border:2px solid var(--tlg-border-strong);font-size:16px;font-weight:800;color:var(--tlg-text)}
.pfc-carry{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;line-height:1.1}
.pfc-carry-lab{font-size:16px;font-weight:700}
.pfc-carry-unit{font-size:20px;font-weight:900;min-width:2ch;text-align:center;white-space:nowrap}
.pfc.is-alert .pfc-carry-unit{animation:pfc-alert .5s steps(2,end) 6;color:var(--tlg-danger-fg,#b91c1c)}
@keyframes pfc-alert{50%{opacity:.15}}
.pfc-yard-h{display:flex;align-items:baseline;gap:10px;margin:0 0 8px;font-size:16px}
.pfc-yard-h b{font-size:17px}
.pfc-tray{display:flex;flex-wrap:wrap;gap:12px 8px;align-items:flex-end;min-height:120px}
html .pfc-ghost{position:fixed;z-index:1000;pointer-events:none;margin:0;transform:rotate(-3deg);filter:drop-shadow(0 8px 10px rgba(0,0,0,.3))}
.pfc-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@media (prefers-reduced-motion: reduce){.pfc-car.is-new,.pfc-link.is-locking,.pfc-car.is-flipping .pfc-frac,.pfc.is-alert .pfc-carry-unit{animation:none}.pfc-tok.is-puff::after{display:none}}

/* energy-ladder.js */
.pel{position:relative;display:inline-block;color:var(--tlg-text);touch-action:none;user-select:none;-webkit-user-select:none}.pel:focus{outline:none}.pel:focus-visible{outline:var(--tlg-focus-width,3px) solid var(--tlg-focus);outline-offset:2px;border-radius:12px}.pel-svg{display:block;overflow:visible}.pel-svg text{fill:currentColor;font-family:var(--tlg-font,system-ui),system-ui,sans-serif;font-size:16px}.pel-axis{stroke:currentColor;stroke-opacity:.55;stroke-width:1.5;fill:none}.pel-free{stroke:currentColor;stroke-opacity:.45;stroke-dasharray:4 5;stroke-width:1.5}.pel-line{stroke:currentColor;stroke-opacity:.8;stroke-width:3;stroke-linecap:round}.pel-line.is-cur{stroke:var(--pel-e,#2f7de1);stroke-opacity:1}.pel-line.is-target{stroke:var(--tlg-focus);stroke-opacity:1;stroke-dasharray:6 4}.pel-lead{stroke:currentColor;stroke-opacity:.35;stroke-width:1.2;fill:none}.pel-chip rect{fill:var(--tlg-surface);stroke:var(--tlg-border-strong);stroke-width:1.5}.pel-chip{cursor:pointer}.pel-chip:hover rect{fill:var(--tlg-surface-2)}.pel-chip.is-cur rect{stroke:var(--pel-e,#2f7de1);stroke-width:2.5}.pel-chip.is-target rect{stroke:var(--tlg-focus);stroke-width:3;stroke-dasharray:6 4}.pel-chip .pel-n{font-weight:800}.pel-chip .pel-en{font-variant-numeric:tabular-nums;opacity:.85}.pel-hit{fill:transparent;cursor:pointer}.pel-e{cursor:grab}.pel-e.is-drag{cursor:grabbing}.pel.is-ro .pel-e,.pel.is-ro .pel-chip,.pel.is-ro .pel-hit{cursor:default}.pel-arrow{fill:none;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}.pel-arrow.is-down{stroke:var(--tlg-text)}.pel-arrow.is-up{stroke:var(--tlg-text-muted);stroke-dasharray:5 4}.pel-arrow.is-old{stroke-opacity:.35}.pel-photon{fill:none;stroke-width:3;stroke-linecap:round}.pel-mark{font-weight:800;font-size:22px}.pel.is-ok .pel-mark{fill:var(--tlg-success,#1f7a3f)}.pel.is-bad .pel-mark{fill:var(--tlg-danger,#b42318)}.pel-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.pel.is-disabled{opacity:.75}

/* motion-track.js */
.pmt-scene{position:relative;width:100%;height:100%;}
.pmt-svg{display:block;width:100%;height:100%;user-select:none;-webkit-user-select:none;}
.pmt-svg text{font-family:var(--tlg-font,system-ui,sans-serif);}
.pmt-panel{display:flex;flex-direction:column;gap:8px;min-height:0;}
.pmt-tabs{display:flex;gap:6px;}
.pmt-tab{flex:1;min-height:44px;border-radius:var(--tlg-radius-full,999px);border:2px solid var(--tlg-border-strong,#8a94a3);background:var(--tlg-surface,#fff);color:var(--tlg-text,#15191f);font:inherit;font-size:16px;font-weight:700;cursor:pointer;}
.pmt-tab[aria-selected="true"]{background:var(--ps-accent,#0e5e5a);border-color:var(--ps-accent,#0e5e5a);color:var(--ps-accent-ink,#fff);}
.pmt-tab:disabled{opacity:.5;cursor:default;}
.pmt-pane[hidden]{display:none;}
.pmt-pedals{display:grid;grid-template-columns:1fr 1fr;gap:8px;}
html .pmt-pedal{touch-action:none;user-select:none;-webkit-user-select:none;}
.pmt-pedal{min-height:64px;border-radius:14px;border:2px solid var(--tlg-border-strong,#8a94a3);background:var(--tlg-surface-2,#eef1f4);color:var(--tlg-text,#15191f);font:inherit;font-size:17px;font-weight:800;cursor:pointer;box-shadow:0 4px 0 var(--tlg-border-strong,#8a94a3);display:flex;align-items:center;justify-content:center;gap:6px;line-height:1.15;padding:4px 8px;}
.pmt-pedal.is-down{transform:translateY(3px);box-shadow:0 1px 0 var(--tlg-border-strong,#8a94a3);background:var(--ps-accent,#0e5e5a);border-color:var(--ps-accent,#0e5e5a);color:var(--ps-accent-ink,#fff);}
.pmt-pedal:disabled{opacity:.45;cursor:default;}
.pmt-pedal-k{font-size:26px;line-height:1;}
.pmt-thr{display:grid;grid-template-columns:auto 44px 1fr 44px;align-items:center;gap:6px;font-size:16px;font-weight:700;}
.pmt-thr input{width:100%;accent-color:var(--ps-accent,#0e5e5a);min-height:32px;}
.pmt-thr output{grid-column:1/-1;justify-self:start;font-variant-numeric:tabular-nums;}
.pmt-step{min-width:44px;min-height:44px;border-radius:10px;border:2px solid var(--tlg-border-strong,#8a94a3);background:var(--tlg-surface,#fff);color:var(--tlg-text,#15191f);font:inherit;font-size:20px;font-weight:800;cursor:pointer;padding:0;}
.pmt-step:disabled{opacity:.4;cursor:default;}
.pmt-help{margin:0;font-size:16px;color:var(--tlg-text-muted,#3f4754);}
.pmt-rows{display:flex;flex-direction:column;gap:6px;}
.pmt-row{display:grid;grid-template-columns:22px 44px minmax(84px,1fr) 44px 30px 44px minmax(46px,.6fr) 44px 40px;align-items:center;gap:4px;font-size:16px;}
.pmt-row-n{font-weight:800;color:var(--tlg-text-muted,#3f4754);}
.pmt-val{text-align:center;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.1;border-radius:8px;padding:2px 0;}
.pmt-val small{display:block;font-size:14px;font-weight:600;color:var(--tlg-text-muted,#3f4754);}
.pmt-val:focus-visible{outline:var(--tlg-focus-width,3px) solid var(--tlg-focus,#2563eb);}
.pmt-for{text-align:center;color:var(--tlg-text-muted,#3f4754);}
.pmt-del{min-width:40px;min-height:44px;border:0;background:transparent;color:var(--tlg-text-muted,#3f4754);font-size:20px;cursor:pointer;border-radius:8px;}
.pmt-del:disabled{visibility:hidden;}
.pmt-planfoot{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:16px;}
.pmt-add{min-height:44px;padding:4px 14px;border-radius:999px;border:2px dashed var(--tlg-border-strong,#8a94a3);background:transparent;color:var(--tlg-text,#15191f);font:inherit;font-size:16px;font-weight:700;cursor:pointer;}
.pmt-add:disabled{opacity:.4;cursor:default;}
.pmt-total{color:var(--tlg-text-muted,#3f4754);}
.pmt-acts{display:grid;grid-template-columns:1.4fr 1fr;gap:8px;}
.pmt-rec,.pmt-retry{min-height:48px;border-radius:12px;font:inherit;font-size:17px;font-weight:800;cursor:pointer;border:2px solid transparent;}
.pmt-rec{background:#c62828;color:#fff;border-color:#a61e1e;}
.pmt-rec:disabled{opacity:.5;cursor:default;}
.pmt-retry{background:var(--tlg-surface,#fff);color:var(--tlg-text,#15191f);border-color:var(--tlg-border-strong,#8a94a3);}
.pmt-retry:disabled{opacity:.45;cursor:default;}
.pmt-status{margin:0;min-height:22px;font-size:16px;font-weight:700;}
.pmt-panel.is-ro .pmt-pane,.pmt-panel.is-ro .pmt-acts{opacity:.75;}

/* Scientific notation: separate fields preserve the written mantissa's significant figures. */
.pn-exponent { display:flex; align-items:center; gap:8px; flex-wrap:wrap; font-size:16px; margin:6px 0; }
.pn-exp-input { width:5ch; min-height:44px; font:inherit; font-size:20px; color:var(--tlg-text); background:var(--tlg-surface); border:2px solid var(--tlg-border-strong); border-radius:8px; padding:4px 8px; }
.pn-exp-input:focus-visible { outline:3px solid var(--tlg-focus); outline-offset:2px; }
.pn-key--exp { font-size:16px; }

/* ── components/node-link.js (PracticeNodeLink, .pnl-*) ── */
.pnl{position:relative;width:100%;height:100%;min-height:320px;overflow:hidden;isolation:isolate;touch-action:none;user-select:none}
.pnl-svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible;z-index:1}
.pnl-edge{fill:none;stroke:var(--tlg-text-muted,#53606e);stroke-width:3;marker-end:url(#pnl-arrow);cursor:pointer;pointer-events:stroke;transition:stroke .18s,stroke-width .18s}
.pnl-edge:hover,.pnl-edge:focus,.pnl-edge.is-selected{stroke:var(--tlg-accent,#0e5e5a);stroke-width:5;outline:none}
.pnl-edge-hit{fill:none;stroke:transparent;stroke-width:18;cursor:pointer;pointer-events:stroke}
.pnl-draft{fill:none;stroke:var(--tlg-accent,#0e5e5a);stroke-width:3;stroke-dasharray:8 6;pointer-events:none}
.pnl-pulse{fill:#ffd166;stroke:#6b4b00;stroke-width:1.5;pointer-events:none}
.pnl-node{position:absolute;z-index:3;width:112px;min-height:92px;transform:translate(-50%,-50%);display:grid;grid-template-rows:54px auto auto;justify-items:center;align-content:start;padding:6px 7px 7px;border:2px solid var(--tlg-border-strong,#8794a3);border-radius:18px;background:var(--tlg-surface,#fff);color:var(--tlg-text,#17202a);box-shadow:0 7px 18px rgba(20,35,50,.2);font:700 16px/1.12 var(--tlg-font-sans,system-ui);cursor:grab}
.pnl-node:focus-visible,.pnl-node.is-focus{outline:4px solid var(--tlg-focus,#ffb703);outline-offset:2px}
.pnl-node.is-source{border-color:var(--tlg-accent,#0e5e5a);box-shadow:0 0 0 4px color-mix(in srgb,var(--tlg-accent,#0e5e5a) 28%,transparent),0 7px 18px rgba(20,35,50,.2)}
.pnl-node.is-highlight{animation:pnl-hl .75s ease-out 2}
.pnl-icon{width:66px;height:52px;display:grid;place-items:center;pointer-events:none}
.pnl-icon svg{display:block;width:100%;height:100%;overflow:visible}
.pnl-label{text-align:center;pointer-events:none}
.pnl-port{position:absolute;right:-8px;top:50%;width:20px;height:20px;border:3px solid var(--tlg-surface,#fff);border-radius:50%;background:var(--tlg-accent,#0e5e5a);box-shadow:0 0 0 2px var(--tlg-accent,#0e5e5a);cursor:crosshair}
.pnl-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:3px;margin-top:4px}
.pnl-tag{border:1px solid var(--tlg-border-strong,#8794a3);border-radius:999px;background:var(--tlg-surface-2,#edf2f4);color:inherit;padding:2px 6px;font:700 16px/1.15 var(--tlg-font-sans,system-ui);cursor:pointer}
.pnl-tag[aria-pressed="true"]{background:var(--tlg-accent,#0e5e5a);color:var(--tlg-accent-ink,#fff);border-color:var(--tlg-accent,#0e5e5a)}
.pnl-tools{position:absolute;z-index:6;display:flex;gap:6px;padding:6px;border:2px solid var(--tlg-border-strong,#8794a3);border-radius:12px;background:var(--tlg-surface,#fff);box-shadow:0 5px 15px rgba(0,0,0,.22)}
.pnl-tools button{min-height:38px;border:1px solid var(--tlg-border-strong,#8794a3);border-radius:9px;padding:5px 9px;background:var(--tlg-surface-2,#edf2f4);color:var(--tlg-text,#17202a);font:800 16px/1 var(--tlg-font-sans,system-ui);cursor:pointer}
.pnl-ripple{position:absolute;z-index:7;transform:translate(-50%,-50%);min-width:42px;height:42px;display:grid;place-items:center;border:3px solid #fff;border-radius:50%;color:#fff;font:900 22px/1 system-ui;box-shadow:0 4px 12px rgba(0,0,0,.32);animation:pnl-pop .42s cubic-bezier(.2,.9,.25,1.4) both}
.pnl-ripple.is-up{background:#16794a}.pnl-ripple.is-down{background:#b83b37}.pnl-ripple.is-same{background:#53606e}
@keyframes pnl-pop{from{opacity:0;transform:translate(-50%,-50%) scale(.3)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}
@keyframes pnl-hl{50%{filter:brightness(1.15);transform:translate(-50%,-50%) scale(1.08)}}
@media(prefers-reduced-motion:reduce){.pnl-node.is-highlight,.pnl-ripple{animation:none}}
@media(max-width:800px){.pnl-node{width:100px;min-height:86px}.pnl-icon{width:58px;height:46px}}

/* ── components/energy-bars.js (PracticeEnergyBars, .peb-*) ── */
.peb{--peb-line:var(--tlg-border,#cbd5e1);--peb-card:var(--tlg-surface,#fff);--peb-ink:var(--tlg-text,#172033);font:600 16px/1.25 system-ui,sans-serif;color:var(--peb-ink);display:grid;gap:8px}
.peb-head{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:42px}.peb-unit{font-weight:800}.peb-system{display:flex;gap:6px;align-items:center;flex-wrap:wrap;color:var(--tlg-text-muted,#526174);font-size:16px}.peb-system b{color:var(--peb-ink)}.peb-system-circle{width:38px;height:38px;flex:0 0 38px;border:3px dashed var(--tlg-physics-solid,#d2362f);border-radius:50%;display:grid;place-items:center;color:var(--tlg-physics-solid,#d2362f);font-size:18px;font-weight:900}
.peb-board{display:grid;grid-template-columns:minmax(0,1fr) 88px minmax(0,1fr);gap:8px;align-items:stretch;min-height:244px}.peb-state,.peb-work{border:2px solid var(--peb-line);border-radius:14px;background:var(--peb-card);padding:8px;display:flex;flex-direction:column;min-width:0}.peb-state h3,.peb-work h3{font-size:16px;margin:0;text-align:center}.peb-bars{display:flex;gap:4px;align-items:flex-end;justify-content:center;flex:1;min-height:176px;min-width:0}
.peb-slot{display:grid;grid-template-rows:1fr auto auto;justify-items:center;gap:3px;flex:0 1 46px;min-width:0;height:100%;position:relative}.peb-well{height:150px;width:100%;max-width:44px;border:2px solid var(--peb-line);border-top:0;border-radius:0 0 7px 7px;position:relative;background:repeating-linear-gradient(to top,transparent 0,transparent calc(10% - 1px),color-mix(in srgb,var(--peb-line) 55%,transparent) calc(10% - 1px),color-mix(in srgb,var(--peb-line) 55%,transparent) 10%);overflow:visible}.peb-fill{position:absolute;left:3px;right:3px;bottom:2px;min-height:0;border:2px solid color-mix(in srgb,var(--bar) 72%,#111);border-bottom:0;background:var(--bar);transition:height .18s ease;pointer-events:none}.peb-fill[data-pattern=stripes]{background:repeating-linear-gradient(135deg,var(--bar) 0 8px,color-mix(in srgb,var(--bar) 65%,#fff) 8px 12px)}.peb-fill[data-pattern=dots]{background-color:var(--bar);background-image:radial-gradient(#fff9 1.5px,transparent 1.8px);background-size:9px 9px}.peb-fill[data-pattern=zigzag]{background:repeating-linear-gradient(45deg,var(--bar) 0 7px,color-mix(in srgb,var(--bar) 60%,#111) 7px 9px)}.peb-fill[data-pattern=waves]{background:repeating-linear-gradient(0deg,var(--bar) 0 6px,color-mix(in srgb,var(--bar) 64%,#fff) 6px 9px)}
.peb-range{position:absolute;inset:-8px -4px -7px;width:auto;height:auto;opacity:.001;cursor:ns-resize;touch-action:none}.peb-range:focus-visible{opacity:1;outline:3px solid var(--tlg-focus,#f59e0b);outline-offset:1px;border-radius:8px}.peb-value{font:800 16px/1 ui-monospace,monospace;min-height:17px}.peb-label{font-weight:900}.peb-sym sub{font-size:.72em;vertical-align:-.25em;line-height:0}.peb-key{display:flex;flex-wrap:wrap;justify-content:center;gap:4px 14px;font-size:16px;color:var(--tlg-text-muted,#526174)}.peb-keyitem{display:inline-flex;align-items:center;gap:5px;white-space:nowrap}.peb-keyitem .peb-sym{color:var(--peb-ink);font-weight:900}.peb-swatch{width:14px;height:14px;border-radius:3px;background:var(--bar)}.peb-name{font-size:16px;color:var(--tlg-text-muted,#526174);text-align:center;white-space:nowrap}
.peb-work{justify-content:center;align-items:center}.peb-workline{height:150px;width:46px;position:relative;border-left:3px solid var(--peb-line);margin-top:8px}.peb-zero{position:absolute;left:-9px;right:-6px;top:50%;border-top:3px solid var(--peb-ink)}.peb-workfill{position:absolute;left:5px;width:30px;background:#c2410c;border:2px solid #7c2d12}.peb-workfill.is-neg{background:#2563eb;border-color:#1e3a8a}.peb-work .peb-range{inset:-8px -12px;width:auto}.peb-arrow{font-size:24px;font-weight:900}.peb-arrow.is-neg{transform:rotate(180deg)}
.peb-balance{display:flex;align-items:center;justify-content:center;gap:8px;border:2px solid var(--peb-line);border-radius:10px;padding:7px 10px;background:var(--peb-card);font-weight:900}.peb-balance.is-ok{border-color:var(--tlg-success,#16803a);background:color-mix(in srgb,var(--tlg-success,#16803a) 10%,var(--peb-card))}.peb-balance.is-bad{border-color:var(--tlg-danger,#b42318)}.peb-eq{font-family:ui-monospace,monospace}.peb-truth{opacity:.36;filter:grayscale(1)}.peb-true{position:absolute;left:3px;right:3px;bottom:2px;border:3px dashed var(--bar);border-bottom:0;background:color-mix(in srgb,var(--bar) 16%,transparent);transition:height 1.2s ease-out;pointer-events:none}.peb-worktrue{position:absolute;left:5px;width:30px;border:3px dashed #c2410c;transition:height 1.2s ease-out,top 1.2s ease-out}.peb-has-truth .peb-fill,.peb-has-truth .peb-workfill{filter:grayscale(1);opacity:.45}.peb-has-truth .peb-balance{flex-wrap:wrap;text-align:center}.peb[aria-disabled=true] .peb-range{display:none}
@media(max-width:720px){.peb-board{grid-template-columns:minmax(0,1fr) 72px minmax(0,1fr);gap:5px}.peb-state,.peb-work{padding:5px}.peb-name{display:none}}
@media(prefers-reduced-motion:reduce){.peb-fill,.peb-true,.peb-worktrue{transition:none}}