/* The manual: a contents list, search, and the app's real screens with numbered markers. */

.wrap.manual { max-width: 1360px; }
.manual { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); padding-top: 48px; padding-bottom: 120px; }
.toc { position: sticky; top: calc(var(--nav-h) + 24px); align-self: start; max-height: calc(100vh - var(--nav-h) - 48px); overflow: auto; padding-right: 6px; scrollbar-width: thin; }
.toc h4 { margin: 22px 0 8px; font-size: 11.5px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-faint); }
.toc h4:first-child { margin-top: 0; }
.toc a { display: block; text-decoration: none; font-size: 14.5px; color: var(--ink-quiet); padding: 6px 12px; border-radius: 10px; transition: background .2s, color .2s; }
.toc a:hover { background: var(--hover); color: var(--ink); }
.toc a.on { color: var(--accent-ink); background: var(--accent-wash); font-weight: 500; }
@media (max-width: 960px) {
  .manual { grid-template-columns: 1fr; padding-top: 28px; }
  .toc { position: sticky; top: var(--nav-h); z-index: 5; max-height: none; display: flex; gap: 6px; overflow-x: auto; padding: 10px 0; margin: 0 calc(var(--pad) * -1); padding-left: var(--pad); padding-right: var(--pad); background: color-mix(in oklab, var(--paper) 92%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line-soft); }
  .toc h4 { display: none; }
  .toc a { white-space: nowrap; border: 1px solid var(--line); flex: none; }
}

.search { position: relative; max-width: 540px; margin-top: 30px; }
.search input { width: 100%; height: 54px; border-radius: var(--r-pill); border: 1px solid var(--rule-strong); background: var(--card-strong); padding: 0 22px 0 52px; font: 400 16px var(--font); color: var(--ink); box-shadow: var(--e1); transition: border-color .2s, box-shadow .2s; }
.search input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-tint); }
.search input::placeholder { color: var(--ink-faint); }
.search > svg { position: absolute; left: 19px; top: 27px; width: 19px; height: 19px; margin-top: -9.5px; color: var(--ink-faint); pointer-events: none; }
.results { position: absolute; left: 0; right: 0; top: calc(100% + 8px); z-index: 30; background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg); box-shadow: var(--e3); padding: 6px; max-height: 380px; overflow: auto; display: none; }
.results.open { display: block; }
.results a { display: block; padding: 10px 14px; border-radius: 12px; text-decoration: none; }
.results a:hover, .results a.sel { background: var(--accent-wash); }
.results a b { display: block; font-weight: 500; font-size: 14.5px; }
.results a span { display: block; font-size: 13px; color: var(--ink-faint); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.results .none { padding: 12px 14px; font-size: 14px; color: var(--ink-faint); }

.chapter { padding: 8px 0 72px; scroll-margin-top: calc(var(--nav-h) + 20px); }
.chapter + .chapter { border-top: 1px solid var(--line-soft); padding-top: 64px; }
.chapter .group { font-size: 12px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--accent-ink); }
.chapter h2 { font-size: clamp(30px, 3.4vw, 42px); letter-spacing: -.04em; line-height: 1.1; margin: 10px 0 12px; }
.chapter > p.intro { color: var(--ink-quiet); font-size: 17px; max-width: 64ch; margin-bottom: 32px; }
@media (max-width: 960px) { .chapter { scroll-margin-top: calc(var(--nav-h) + 70px); } }

/* diagram: the real screen with numbered markers, and what each one does. A full window sits
   full width with its list below; a settings section, which is narrow, sits beside its list. */
.diagram { display: grid; gap: clamp(22px, 3vw, 36px); align-items: start; }
.diagram.narrow { grid-template-columns: minmax(0, 560px) minmax(0, 1fr); }
.diagram.wide .spots { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.figwrap { position: sticky; top: calc(var(--nav-h) + 24px); }
.diagram.wide .figwrap, .diagram.tall .figwrap { position: static; }
.fig { position: relative; margin: 0; border-radius: 16px; border: 1px solid var(--line); box-shadow: var(--e2); background: var(--paper); scroll-margin: calc(var(--nav-h) + 20px); }
.fig > img { width: 100%; height: auto; border-radius: 15px; }
.fig .clip { position: absolute; inset: 0; border-radius: 15px; overflow: hidden; pointer-events: none; }
.mk { position: absolute; z-index: 3; width: 26px; height: 26px; margin: 0; border-radius: 50%; border: 2px solid var(--paper); background: var(--accent-ink); color: var(--paper); font: 600 12px/22px var(--font); text-align: center; cursor: pointer; box-shadow: 0 2px 6px rgba(36, 31, 51, .25); transition: transform .2s var(--ease), background .2s; padding: 0; }
.mk:hover, .mk.on { transform: scale(1.18); background: var(--ink); }
.mk::after { content: ""; position: absolute; inset: -6px; border-radius: 50%; border: 2px solid var(--accent); opacity: 0; animation: ping 2.6s var(--ease) infinite; }
.fig:hover .mk::after, .fig.active .mk::after { animation: none; }
@keyframes ping { 0% { transform: scale(.7); opacity: .7; } 70%, 100% { transform: scale(1.5); opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .mk::after { animation: none; } }
.hl { position: absolute; border-radius: 10px; border: 2px solid var(--accent); background: color-mix(in oklab, var(--accent) 7%, transparent); box-shadow: 0 0 0 100vmax rgba(36, 31, 51, .22); opacity: 0; transition: opacity .25s, left .35s var(--ease), top .35s var(--ease), width .35s var(--ease), height .35s var(--ease); }
.fig.active .hl { opacity: 1; }
.tip { position: absolute; z-index: 4; background: var(--paper); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--e3); padding: 14px 16px; opacity: 0; transform: translateY(4px); pointer-events: none; transition: opacity .2s, transform .25s var(--ease); }
.fig.active .tip { opacity: 1; transform: none; }
.tip b { display: block; font-size: 14.5px; font-weight: 600; letter-spacing: -.01em; }
.tip p { font-size: 13.5px; line-height: 1.55; color: var(--ink-quiet); margin-top: 4px; }
.spots { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.spot { display: grid; grid-template-columns: 26px 1fr; gap: 14px; padding: 14px 16px; border-radius: var(--r-md); cursor: pointer; transition: background .2s, box-shadow .2s; scroll-margin-top: calc(var(--nav-h) + 30px); }
.spot .n { width: 26px; height: 26px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-ink); font-weight: 600; font-size: 12px; display: grid; place-items: center; margin-top: 1px; transition: background .2s, color .2s; }
.spot h3 { font-size: 16px; letter-spacing: -.01em; }
.spot p { font-size: 14.5px; color: var(--ink-quiet); margin-top: 4px; }
.spot:hover, .spot.on { background: var(--card-strong); box-shadow: var(--e1); }
.spot.on .n { background: var(--ink); color: var(--paper); }
.spot.flash { animation: flash 1.6s var(--ease); }
@keyframes flash { 0%, 30% { background: var(--accent-soft); } 100% { background: transparent; } }
@media (max-width: 1100px) { .diagram.narrow { grid-template-columns: 1fr; } .diagram.narrow .fig { max-width: 560px; } .figwrap { position: static; } }

/* set-up steps */
.stepper { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 300px); gap: clamp(22px, 3vw, 40px); align-items: start; }
.stepper .fig { max-width: 640px; }
.step-tabs { display: grid; gap: 4px; list-style: none; margin: 0; padding: 0; }
.step-tabs button { width: 100%; text-align: left; display: grid; grid-template-columns: 26px 1fr; gap: 12px; padding: 12px 14px; border-radius: var(--r-md); border: 0; background: transparent; font: inherit; color: var(--ink-quiet); cursor: pointer; transition: background .2s; }
.step-tabs button .n { width: 26px; height: 26px; border-radius: 50%; border: 1px solid var(--rule-strong); display: grid; place-items: center; font-weight: 600; font-size: 12px; }
.step-tabs button b { font-weight: 500; color: var(--ink); font-size: 15px; display: block; }
.step-tabs button .t { display: none; font-size: 14px; margin-top: 4px; line-height: 1.55; }
.step-tabs button[aria-selected="true"] { background: var(--card-strong); box-shadow: var(--e1); }
.step-tabs button[aria-selected="true"] .n { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.step-tabs button[aria-selected="true"] .t { display: block; }
.step-tabs button:hover { background: var(--hover); }
.step-tabs button[aria-selected="true"]:hover { background: var(--card-strong); }
@media (max-width: 960px) { .stepper { grid-template-columns: 1fr; } }

/* keys and phrases */
.rows { border-top: 1px solid var(--line); }
.krow { display: grid; grid-template-columns: 230px 1fr; gap: 20px; padding: 18px 4px; border-bottom: 1px solid var(--line-soft); align-items: start; }
.krow .keys { display: flex; align-items: center; flex-wrap: wrap; gap: 4px; }
.krow .how { display: block; width: 100%; font-size: 12.5px; color: var(--ink-faint); margin-top: 8px; }
.krow h3 { font-size: 16.5px; }
.krow p { color: var(--ink-quiet); font-size: 15px; margin-top: 4px; }
.prow { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; padding: 16px 4px; border-bottom: 1px solid var(--line-soft); }
.prow b { font-weight: 500; font-size: 16px; }
.prow b::before { content: "\201C"; color: var(--accent); }
.prow b::after { content: "\201D"; color: var(--accent); }
.prow p { color: var(--ink-quiet); font-size: 14.5px; margin-top: 3px; }
@media (max-width: 640px) { .krow { grid-template-columns: 1fr; gap: 8px; } }

/* gallery: the bubble and the corner card, over a light desktop */
.gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; align-items: start; }
.gitem { border-radius: var(--r-lg); border: 1px solid var(--line-soft); background: var(--card-strong); overflow: hidden; box-shadow: var(--e1); }
.gitem .desk { position: relative; background: var(--surface); display: grid; place-items: center; padding: 26px 18px; min-height: 150px; border-bottom: 1px solid var(--line-soft); }
.gitem .desk::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(var(--dot) 1px, transparent 1.2px); background-size: 20px 20px; }
.gitem .desk img { position: relative; height: auto; max-width: 100%; }
.gitem .cap { padding: 16px 20px 20px; }
.gitem h3 { font-size: 16.5px; }
.gitem p { font-size: 14.5px; color: var(--ink-quiet); margin-top: 4px; }
@media (max-width: 720px) { .gallery { grid-template-columns: 1fr; } }