/* The bladeless fan: only what is particular to this piece. Layout for the
 * stage, controls and readout comes from /assets/lab-kit/lab-kit.css, colour
 * and type from the site shell. */

:root {
  /* the three sources of air, shared by the scene, the charts and the figures */
  --flow-primary: var(--accent);
  --flow-induced: light-dark(#2f6aa8, #86b6f0);
  --flow-entrained: light-dark(#2e8467, #74d0ab);
}

.hero { max-width: 44rem; }
.hero .kicker { font-family: var(--sans); font-size: .6875rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: .4rem; }
.hero h1 { margin: 0 0 .5rem; }
.hero .lede { font-size: 1.1875rem; line-height: 1.55; color: var(--ink-soft); max-width: 42rem; font-style: italic; }
.hero .ig-page-nav { margin-inline: 0; max-width: none; }

.thesis {
  font-size: 1.25rem; line-height: 1.5; font-weight: 600;
  max-width: 44rem; margin: 2.5rem 0 2rem;
  padding-left: 1.1rem; border-left: 3px solid var(--accent);
}

main > section > p, main > p { max-width: 42rem; }
main > section { margin-block: 3.5rem; }
main > section > h2 { margin-bottom: .9rem; }
main > section + section { border-top: 1px solid var(--rule); padding-top: 3rem; }
main > section > p + p, .lab > p + p { margin-top: 1em; }

.lab { margin-block: 3rem; }
.lab .lab-stage { aspect-ratio: 16 / 9; }
.lab > p { max-width: 42rem; }
.lab-note { max-width: 42rem; margin-top: .75rem; font: .8125rem/1.5 var(--sans); color: var(--ink-faint); }

.lab-toggles { gap: .4rem !important; }
.lab-toggles label {
  display: inline-flex !important; align-items: center; gap: .4rem;
  border: 1px solid var(--rule); border-radius: 999px;
  padding: .3rem .8rem; cursor: pointer;
}
.lab-toggles label:has(:checked) { border-color: var(--accent); color: var(--ink); background: color-mix(in oklab, var(--accent) 12%, transparent); }

/* Callouts over the canvas: a label box, a hairline leader and a dot on the
 * part. The scene script stacks them so they never overlap. */
.lab-labels { position: absolute; inset: 0; pointer-events: none; transition: opacity .3s; overflow: hidden; }
.lab-labels.is-hidden { opacity: 0; }
.lab-leaders { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.lab-leaders line { stroke: color-mix(in oklab, var(--ink) 62%, transparent); stroke-width: 1; transition: opacity .25s; }
.lab-leaders circle { fill: var(--ink); stroke: var(--paper); stroke-width: 1.5; transition: opacity .25s; }
.lab-label {
  position: absolute; top: 0; left: 0; white-space: nowrap;
  font: 500 .78125rem/1.2 var(--sans); letter-spacing: .01em; color: var(--ink);
  padding: .22rem .5rem; border-radius: 4px;
  background: color-mix(in oklab, var(--paper) 86%, transparent);
  border: 1px solid color-mix(in oklab, var(--rule-firm) 70%, transparent);
  backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px);
  transition: opacity .25s;
}
.lab-label.is-chip, .lab-label.is-probe { border-radius: 999px; padding: .22rem .6rem; }
.lab-label.is-chip { border-color: var(--c); }
.lab-label.is-chip::before { content: ''; display: inline-block; width: .55rem; height: .55rem; border-radius: 50%; background: var(--c); margin-right: .4rem; vertical-align: -.02rem; }
.lab-label[data-kind="1"] { --c: var(--flow-induced); }
.lab-label[data-kind="2"] { --c: var(--flow-entrained); }
.lab-label.is-probe { border-color: var(--accent); font-variant-numeric: tabular-nums; font-weight: 600; }
.lab-label.is-tick { background: none; border: none; backdrop-filter: none; -webkit-backdrop-filter: none; padding: 0; font: .6875rem/1 var(--sans); color: var(--ink-faint); }
@media (max-width: 40rem) { .lab-label { font-size: .6875rem; padding: .16rem .38rem; } }

/* The colour key on the stage */
.flow-key {
  position: absolute; top: .65rem; left: .65rem; z-index: 2; pointer-events: none;
  padding: .5rem .7rem .45rem; border-radius: 6px; min-width: 13.5rem;
  background: color-mix(in oklab, var(--paper) 88%, transparent);
  border: 1px solid var(--rule); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  font: .75rem/1.4 var(--sans); color: var(--ink-soft);
}
.flow-key[hidden] { display: none; }
.flow-key p { margin: 0; }
.flow-key-h { font-weight: 600; color: var(--ink); margin-bottom: .3rem !important; }
.flow-key-row { display: grid; grid-template-columns: 1.6rem 1fr auto; align-items: center; gap: .5rem; transition: opacity .3s; }
.flow-key-row.is-off { opacity: .32; }
.flow-key-row i { height: 4px; border-radius: 2px; background: linear-gradient(90deg, color-mix(in oklab, var(--c) 0%, transparent), var(--c)); }
.flow-key-row[data-k="p"] { --c: var(--flow-primary); }
.flow-key-row[data-k="i"] { --c: var(--flow-induced); }
.flow-key-row[data-k="e"] { --c: var(--flow-entrained); }
.flow-key-row b { font-variant-numeric: tabular-nums; color: var(--ink); font-weight: 600; }
.flow-key .s { display: none; }
/* on a narrow stage the key folds into one line along the top */
.flow-key.is-compact { display: flex; flex-wrap: wrap; gap: .15rem .7rem; right: .4rem; top: .4rem; left: .4rem; min-width: 0; padding: .25rem .5rem; font-size: .625rem; line-height: 1.3; }
.flow-key.is-compact .s { display: inline; }
.flow-key.is-compact .l, .flow-key.is-compact .flow-key-h, .flow-key.is-compact .flow-key-sum { display: none; }
.flow-key.is-compact .flow-key-row { display: flex; gap: .3rem; }
.flow-key.is-compact .flow-key-row i { width: .8rem; }
.flow-key-sum { border-top: 1px solid var(--rule); margin-top: .3rem !important; padding-top: .25rem; text-align: right; color: var(--ink); font-variant-numeric: tabular-nums; font-weight: 600; }

/* Charts under the stage */
.lab-charts { display: grid; grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr)); gap: 1rem 1.5rem; margin-top: 1.25rem; }
.lab-charts figure { margin: 0; padding: .8rem .9rem .6rem; border: 1px solid var(--rule); border-radius: 6px; background: var(--paper-sunk); }
.lab-charts svg { width: 100%; height: auto; display: block; overflow: visible; }
.c-grid { stroke: var(--rule); stroke-width: 1; }
.c-tick { font: 10px var(--sans); fill: var(--ink-soft); }
.c-axis { font: 11px var(--sans); fill: var(--ink-soft); }
.c-note { font: 10px var(--sans); fill: var(--ink-faint); font-style: italic; }
.c-label { font: 600 11px var(--sans); fill: var(--ink); paint-order: stroke; stroke: var(--paper-sunk); stroke-width: 4px; stroke-linejoin: round; }
.c-band { fill: color-mix(in oklab, var(--ink) 5%, transparent); }
.c-pri { fill: color-mix(in oklab, var(--flow-primary) 85%, transparent); }
.c-ind { fill: color-mix(in oklab, var(--flow-induced) 55%, transparent); }
.c-ent { fill: color-mix(in oklab, var(--flow-entrained) 45%, transparent); }
.c-swatch { stroke: none; }
.c-patent { fill: none; stroke: var(--ink); stroke-width: 1.2; stroke-dasharray: 3 2; }
.c-probe { stroke: var(--accent); stroke-width: 1.2; stroke-dasharray: 4 3; }
.c-best { stroke: var(--ink-faint); stroke-width: 1; stroke-dasharray: 2 3; }
.c-dot { fill: var(--accent); stroke: var(--paper); stroke-width: 1.5; }
.c-dot-r { fill: var(--paper); stroke: var(--ink-soft); stroke-width: 1.5; }
.c-q { fill: none; stroke: var(--ink); stroke-width: 2; }
.c-ratio { fill: none; stroke: var(--ink-soft); stroke-width: 1.6; stroke-dasharray: 5 4; }

/* Static figures: the fallback and the cross-section */
.fb-axis { stroke: var(--rule-firm); stroke-width: 1; stroke-dasharray: 6 5; }
.fb-loop { fill: color-mix(in oklab, var(--ink) 16%, var(--paper)); stroke: var(--ink-soft); stroke-width: 1; }
.fb-base { fill: color-mix(in oklab, var(--ink) 16%, var(--paper)); stroke: var(--ink-soft); stroke-width: 1; }
.fb-p path, .fb-path { fill: none; stroke: var(--flow-primary); stroke-width: 2.4; }
.fb-i path { fill: none; stroke: var(--flow-induced); stroke-width: 1.6; }
.fb-e path { fill: none; stroke: var(--flow-entrained); stroke-width: 1.6; }
.fb-mk-p { fill: var(--flow-primary); }
.fb-mk-i { fill: var(--flow-induced); }
.fb-mk-e { fill: var(--flow-entrained); }
.fb-lead { stroke: var(--ink-faint); stroke-width: .8; }
.fb-t { font: 12px var(--sans); fill: var(--ink-soft); paint-order: stroke; stroke: var(--paper-sunk); stroke-width: 5px; stroke-linejoin: round; }
.fb-t-p { fill: var(--ink); font-weight: 600; }
.fb-t-i { fill: var(--flow-induced); }
.fb-t-e { fill: var(--flow-entrained); }
.fb-t-in { fill: var(--ink-soft); font-style: italic; }
.figure { margin: 1.5rem 0 2rem; }
.figure svg.xs { width: 100%; max-width: 44rem; height: auto; display: block; }
.figure figcaption { max-width: 42rem; font: .8125rem/1.5 var(--sans); color: var(--ink-soft); margin-top: .5rem; }

/* The comparison table */
.table-figure { margin: 1.75rem 0; overflow-x: auto; }
.table-figure table { border-collapse: collapse; font-family: var(--sans); font-size: .875rem; min-width: 36rem; }
.table-figure th, .table-figure td { text-align: left; padding: .45rem .8rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
.table-figure td:last-child { font-variant-numeric: tabular-nums; font-weight: 600; color: var(--ink); }
.table-figure thead th { border-bottom-color: var(--rule-firm); font-weight: 600; color: var(--ink); }
.table-figure figcaption { font: .8125rem/1.5 var(--sans); color: var(--ink-faint); margin-top: .6rem; max-width: 42rem; }

.sources { border-top: 1px solid var(--rule); padding-top: 1.75rem; }
.sources ul { max-width: 44rem; padding-left: 1.1rem; }
.sources li { margin-bottom: .6rem; font-size: .9375rem; line-height: 1.55; }
.sources em { color: var(--ink-soft); }

html[lang="ja"] main > section > p, html[lang="ja"] .lab > p { line-height: 1.85; }
html[lang="ja"] .hero .lede { font-style: normal; }

@media (max-width: 52rem) {
  .lab .lab-stage { aspect-ratio: 4 / 3; }
  .thesis { font-size: 1.125rem; }
}
.figure .fb-t { stroke: var(--paper); }

/* The tour: stop pills, then a caption between previous/next buttons */
.lab-tour { grid-column: 1 / -1; display: grid; gap: .6rem; padding-bottom: .9rem; border-bottom: 1px solid var(--rule); margin-bottom: .25rem; }
.lab-views { display: flex; flex-wrap: wrap; gap: .4rem; }
.lab-views label {
  display: inline-flex !important; align-items: center; gap: .4rem;
  border: 1px solid var(--rule); border-radius: 999px;
  padding: .3rem .8rem; cursor: pointer; font-size: .8125rem;
}
.lab-views label:has(:checked) { border-color: var(--accent); color: var(--ink); background: color-mix(in oklab, var(--accent) 12%, transparent); }
.lab-views input { accent-color: var(--accent); }
.lab-tour-row { display: grid; grid-template-columns: auto 1fr auto; gap: .75rem; align-items: center; }
.lab-tour-row button { width: 2.2rem; height: 2.2rem; padding: 0; border-radius: 999px; font-size: 1.25rem; line-height: 1; }
.lab-tour-caption { margin: 0; font: .9375rem/1.55 var(--serif); color: var(--ink); min-height: 2.4em; }
html[lang="ja"] .lab-tour-caption { line-height: 1.8; }