/* Learn tools: "How big is a gigabyte?" zoom + "What size drive do I need?" guide.
   Everything is scoped under .wk-page .ds and prefixed ds- so it can't collide with page styles.
   Colours come from the site's .wk-page variables, so the Dark / Amber / Light looks and
   high-contrast mode all apply. Font sizes multiply by --fs so the Text size button works. */

.wk-page .ds {
  --f: var(--fs, 1);
  --ds-panel-2: color-mix(in srgb, var(--bg-panel) 94%, var(--text));
  --ds-files: var(--accent-2);
  --ds-devices: var(--accent);
  --ds-cloud: #8fb3ff;
  --ds-world: #c9a7ff;
  --ds-dot: color-mix(in srgb, var(--line) 75%, transparent);
  display: grid;
  gap: 16px;
  font-size: calc(15px * var(--f));
  line-height: 1.55;
}
html[data-look="light"] .wk-page .ds { --ds-cloud: #2c5fc9; --ds-world: #7a4cc2; }
html[data-wk-hc="1"] .wk-page .ds { --ds-panel-2: #000; --ds-files: #ffff00; --ds-cloud: #ffffff; --ds-world: #ffffff; --ds-dot: #444; }

.wk-page .ds [hidden] { display: none !important; }
.wk-page .ds button, .wk-page .ds select, .wk-page .ds input { font: inherit; color: var(--text); }
.wk-page .ds .ds-files { --c: var(--ds-files); }
.wk-page .ds .ds-devices { --c: var(--ds-devices); }
.wk-page .ds .ds-cloud { --c: var(--ds-cloud); }
.wk-page .ds .ds-world { --c: var(--ds-world); }

.wk-page .ds-intro { color: var(--text-dim); max-width: 62ch; margin-bottom: var(--space-3); }
.wk-page .ds-crumb a { text-decoration: underline; text-underline-offset: 3px; }
.wk-page .ds-crumb a:hover { color: var(--text); }

/* Bar: view tabs + settings */
.wk-page .ds-bar { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 14px 24px; }
.wk-page .ds-tabs { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: 4px; background: var(--bg-panel); }
.wk-page .ds-tabs a { padding: 8px 16px; border-radius: 999px; font-family: var(--font-mono); font-size: calc(13px * var(--f)); color: var(--text-dim); min-height: 36px; display: inline-flex; align-items: center; }
.wk-page .ds-tabs a:hover { color: var(--text); }
/* selected tab: tinted, not a solid neon fill (John found solid accent fills too glaring) */
.wk-page .ds-tabs a[aria-current="page"] { background: color-mix(in srgb, var(--accent) 16%, var(--bg-panel)); color: var(--text); box-shadow: inset 0 0 0 1px var(--accent); font-weight: 600; }
.wk-page .ds-settings { display: flex; flex-wrap: wrap; gap: 12px; }
.wk-page .ds-field { display: grid; gap: 4px; min-width: 0; }
.wk-page .ds-field label { font-family: var(--font-mono); font-size: calc(11px * var(--f)); letter-spacing: .08em; text-transform: uppercase; color: var(--text-dim); }
.wk-page .ds select { background-color: var(--bg-panel); border: 1px solid var(--line); border-radius: 8px; padding: 9px 34px 9px 11px; max-width: 100%; min-height: 40px;
  appearance: none; -webkit-appearance: none; cursor: pointer; text-overflow: ellipsis;
  background-image: linear-gradient(45deg, transparent 50%, var(--text-dim) 50%), linear-gradient(135deg, var(--text-dim) 50%, transparent 50%);
  background-position: calc(100% - 17px) 52%, calc(100% - 12px) 52%; background-size: 5px 5px; background-repeat: no-repeat; }
.wk-page .ds select:hover { border-color: var(--accent); }
.wk-page .ds select option { background: var(--bg-panel); color: var(--text); }

/* ===== Zoom view ===== */
.wk-page .ds-main { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 16px; height: clamp(460px, 72vh, 700px); }
.wk-page .ds-left { display: grid; grid-template-rows: minmax(0, 1fr) auto; gap: 12px; min-height: 0; min-width: 0; }
.wk-page .ds-stage { position: relative; overflow: hidden; border: 1px solid var(--line); border-radius: 12px; background-color: var(--bg-panel);
  background-image: radial-gradient(var(--ds-dot) 1.2px, transparent 1.4px); background-size: 22px 22px;
  touch-action: pan-y; cursor: grab; user-select: none; -webkit-user-select: none; min-height: 300px; }
.wk-page .ds-stage.is-dragging { cursor: grabbing; }
.wk-page .ds-floor { position: absolute; left: 0; right: 0; height: 0; border-top: 1px dashed var(--line); pointer-events: none; }
.wk-page .ds-readout { position: absolute; left: 18px; top: 14px; pointer-events: none; z-index: 5; }
.wk-page .ds-readout__eyebrow { font-family: var(--font-mono); font-size: calc(11px * var(--f)); letter-spacing: .08em; text-transform: uppercase; color: var(--text-dim); }
.wk-page .ds-readout__big { font-family: var(--font-display); font-weight: 700; font-size: calc(clamp(30px, 4vw, 46px) * var(--f)); line-height: 1; margin-top: 4px; font-variant-numeric: tabular-nums; }
.wk-page .ds-readout__big span { color: var(--accent); }
.wk-page .ds-readout__small { font-family: var(--font-mono); font-size: calc(12.5px * var(--f)); color: var(--text-dim); margin-top: 6px; font-variant-numeric: tabular-nums; max-width: 46ch; }
.wk-page .ds-hint { position: absolute; right: 16px; top: 14px; font-family: var(--font-mono); font-size: calc(11.5px * var(--f)); color: var(--text-dim); pointer-events: none; z-index: 5; text-align: right; }
.wk-page .ds-wheelhint { position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%); z-index: 6; pointer-events: none;
  background: var(--text); color: var(--bg); font-family: var(--font-mono); font-size: calc(12.5px * var(--f)); padding: 8px 14px; border-radius: 999px;
  opacity: 0; transition: opacity .25s; white-space: nowrap; }
.wk-page .ds-wheelhint.is-on { opacity: .92; }

/* Tiles are sized directly (no CSS scale) so they redraw crisply at any zoom; --w is set from script. */
.wk-page .ds-tile { position: absolute; left: 0; top: 0; --w: 200px; width: var(--w); height: var(--w); cursor: pointer; }
.wk-page .ds-tile svg { display: block; width: 100%; height: 100%; overflow: visible; }
.wk-page .ds-tile .bg, .wk-page .ds-tile .bgf { fill: color-mix(in srgb, var(--c) 9%, var(--bg-panel)); }
.wk-page .ds-tile .bg { stroke: var(--c); stroke-opacity: .45; stroke-width: 1.2; }
.wk-page .ds-tile.is-focus .bg { stroke-opacity: 1; stroke-width: 1.8; }
.wk-page .ds-tile .ic { fill: none; stroke: var(--c); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.wk-page .ds-tile .ic .bgf { stroke: var(--c); }
.wk-page .ds-tile .fl { fill: var(--c); stroke: none; }
.wk-page .ds-tile__lbl { position: absolute; top: calc(var(--w) * 1.05); left: calc(var(--w) * -0.25); width: calc(var(--w) * 1.5); text-align: center; transition: opacity .2s; pointer-events: none; }
.wk-page .ds-tile__nm { font-family: var(--font-display); font-weight: 600; font-size: calc(var(--w) * 0.1); line-height: 1.15; color: var(--text); text-wrap: balance; }
.wk-page .ds-tile__sz { font-family: var(--font-mono); font-size: calc(var(--w) * 0.08); color: var(--c); margin-top: .2em; }
.wk-page .ds-tile.no-label .ds-tile__lbl { opacity: 0; }

.wk-page .ds-ruler { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 12px; align-items: center; }
.wk-page .ds-step { background: var(--bg-panel); border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; min-height: 40px; cursor: pointer; font-family: var(--font-mono); font-size: calc(13px * var(--f)); white-space: nowrap; }
.wk-page .ds-step:hover { border-color: var(--accent); color: var(--accent); }
.wk-page .ds-trackwrap { position: relative; padding-bottom: 20px; min-width: 0; }
.wk-page .ds-track { position: relative; height: 32px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg-panel); }
.wk-page .ds-mark { position: absolute; top: 10px; width: 2px; height: 10px; margin-left: -1px; border-radius: 1px; background: var(--c); opacity: .55; pointer-events: none; }
.wk-page .ds-mark.is-focus { opacity: 1; height: 14px; top: 8px; }
.wk-page .ds-track input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; background: transparent; appearance: none; -webkit-appearance: none; cursor: pointer; }
.wk-page .ds-track input::-webkit-slider-runnable-track { height: 100%; background: transparent; }
.wk-page .ds-track input::-moz-range-track { height: 100%; background: transparent; }
.wk-page .ds-track input::-webkit-slider-thumb { -webkit-appearance: none; width: 4px; height: 32px; margin-top: -1px; border-radius: 2px; background: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent); }
.wk-page .ds-track input::-moz-range-thumb { width: 4px; height: 30px; border: 0; border-radius: 2px; background: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent); }
.wk-page .ds-units { position: absolute; left: 0; right: 0; bottom: 0; height: 18px; pointer-events: none; }
.wk-page .ds-units span { position: absolute; transform: translateX(-50%); font-family: var(--font-mono); font-size: calc(11px * var(--f)); color: var(--text-dim); }
.wk-page .ds-units span.is-on { color: var(--accent); font-weight: 600; }

.wk-page .ds-info { background: var(--bg-panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px; overflow-y: auto; overflow-x: hidden; min-height: 0; min-width: 0;
  display: grid; grid-template-columns: minmax(0, 1fr); grid-auto-rows: max-content; align-content: start; gap: 13px; }
.wk-page .ds-info > * { min-width: 0; }
.wk-page .ds-info select { width: 100%; }
.wk-page .ds-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.wk-page .ds-chip { font-family: var(--font-mono); font-size: calc(11px * var(--f)); letter-spacing: .06em; text-transform: uppercase; padding: 3px 8px; border-radius: 999px; border: 1px solid var(--c); color: var(--c); }
.wk-page .ds-chip.is-est { --c: var(--text-dim); }
.wk-page .ds-info h2 { font-family: var(--font-display); font-weight: 700; font-size: calc(22px * var(--f)); line-height: 1.15; text-wrap: balance; }
.wk-page .ds-isize { font-family: var(--font-display); font-weight: 700; font-size: calc(38px * var(--f)); line-height: 1; color: var(--c); font-variant-numeric: tabular-nums; }
.wk-page .ds-ibytes { font-family: var(--font-mono); font-size: calc(12.5px * var(--f)); color: var(--text-dim); margin-top: 6px; overflow-wrap: anywhere; }
.wk-page .ds-note { border-left: 2px solid var(--accent); padding-left: 10px; font-size: calc(14px * var(--f)); }
.wk-page .ds-facts { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.wk-page .ds-fact { background: var(--ds-panel-2); padding: 10px 12px; display: grid; gap: 1px; }
.wk-page .ds-k { font-family: var(--font-mono); font-size: calc(11px * var(--f)); letter-spacing: .06em; text-transform: uppercase; color: var(--text-dim); }
.wk-page .ds-fact .ds-v { font-family: var(--font-display); font-weight: 600; font-size: calc(18px * var(--f)); font-variant-numeric: tabular-nums; }
.wk-page .ds-s { font-size: calc(12.5px * var(--f)); color: var(--text-dim); }
.wk-page .ds-fine { font-size: calc(12.5px * var(--f)); color: var(--text-dim); }
.wk-page .ds-legend { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: calc(12.5px * var(--f)); color: var(--text-dim); }
.wk-page .ds-legend i { display: inline-block; width: 9px; height: 9px; border-radius: 2px; background: var(--c); margin-right: 6px; }

/* ===== Drive size guide ===== */
.wk-page .ds-card { background: var(--bg-panel); border: 1px solid var(--line); border-radius: 12px; padding: clamp(16px, 2.2vw, 28px); display: grid; gap: 18px; min-width: 0; }
.wk-page .ds-card h2 { font-family: var(--font-display); font-weight: 600; font-size: calc(clamp(21px, 2.3vw, 27px) * var(--f)); line-height: 1.15; margin: 2px 0 6px; text-wrap: balance; }
.wk-page .ds-card h3 { font-family: var(--font-display); font-weight: 600; font-size: calc(18px * var(--f)); margin-bottom: 6px; }
.wk-page .ds-card .eyebrow { margin-bottom: 4px; }
.wk-page .ds-lede { color: var(--text-dim); max-width: 70ch; }
.wk-page .ds-two { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 28px; align-items: start; }
.wk-page .ds-two.is-even { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.wk-page .ds-ladder { list-style: none; margin: 0; padding: 0; display: grid; }
.wk-page .ds-ladder li { display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 2px 14px; align-items: baseline; padding: 11px 0; border-bottom: 1px solid var(--line); }
.wk-page .ds-ladder li:last-child { border-bottom: 0; }
.wk-page .ds-ladder .ds-u { grid-row: span 2; font-family: var(--font-display); font-weight: 700; font-size: calc(26px * var(--f)); color: var(--accent); }
.wk-page .ds-ladder .ds-eq { font-family: var(--font-mono); font-size: calc(14px * var(--f)); font-weight: 500; }
.wk-page .ds-ladder .ds-ex { font-size: calc(13.5px * var(--f)); color: var(--text-dim); }
.wk-page .ds-gb { display: grid; gap: 10px; min-width: 0; }
.wk-page .ds-gb__head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 12px; }
.wk-page .ds-gb__head strong { font-family: var(--font-display); font-weight: 600; font-size: calc(16px * var(--f)); }
.wk-page .ds-gbgrid { display: grid; grid-template-columns: repeat(32, minmax(0, 1fr)); gap: 2px; }
.wk-page .ds-gbgrid span { aspect-ratio: 1; border-radius: 1.5px; background: var(--ds-panel-2); transition: background-color .25s; }
.wk-page .ds-gbgrid span.a { background: var(--accent); }
.wk-page .ds-gbgrid span.b { background: color-mix(in srgb, var(--accent) 50%, var(--bg-panel)); }
html[data-wk-hc="1"] .wk-page .ds-gbgrid span { background: #222; }
html[data-wk-hc="1"] .wk-page .ds-gbgrid span.a { background: #ffff00; }
html[data-wk-hc="1"] .wk-page .ds-gbgrid span.b { background: #ffffff; }
.wk-page .ds-gb__cap { font-size: calc(14px * var(--f)); }
.wk-page .ds-gb__cap b { font-family: var(--font-display); font-size: calc(18px * var(--f)); color: var(--accent); }
.wk-page .ds-pills { display: flex; flex-wrap: wrap; gap: 6px; }
.wk-page .ds-pill { border: 1px solid var(--line); background: var(--ds-panel-2); border-radius: 999px; padding: 6px 13px; min-height: 36px; cursor: pointer; font-size: calc(13px * var(--f)); font-family: var(--font-mono); }
.wk-page .ds-pill:hover { border-color: var(--accent); }
.wk-page .ds-pill[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, var(--bg-panel)); font-weight: 600; }
.wk-page .ds-check { display: flex; gap: 8px; align-items: center; font-size: calc(14px * var(--f)); cursor: pointer; }
.wk-page .ds-check input { accent-color: var(--accent); width: 18px; height: 18px; }
.wk-page .ds-split { display: flex; height: 46px; border-radius: 10px; overflow: hidden; border: 1px solid var(--line); }
.wk-page .ds-seg { display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: calc(12.5px * var(--f)); font-weight: 600; white-space: nowrap; overflow: hidden; min-width: 0; transition: flex-basis .35s ease; }
.wk-page .ds-seg--os, .wk-page .ds-sw--os { background: color-mix(in srgb, var(--text-dim) 35%, var(--bg-panel)); color: var(--text); }
.wk-page .ds-seg--free, .wk-page .ds-sw--free { background: repeating-linear-gradient(135deg, var(--ds-panel-2) 0 6px, color-mix(in srgb, var(--text-dim) 18%, var(--bg-panel)) 6px 12px); color: var(--text-dim); }
.wk-page .ds-seg--files, .wk-page .ds-sw--files { background: var(--accent); color: var(--bg); }
.wk-page .ds-splitlegend { display: flex; flex-wrap: wrap; gap: 6px 20px; margin-top: 10px; font-size: calc(13.5px * var(--f)); color: var(--text-dim); }
.wk-page .ds-splitlegend b { color: var(--text); font-family: var(--font-mono); font-weight: 600; margin-left: 4px; }
.wk-page .ds-sw { display: inline-block; width: 11px; height: 11px; border-radius: 3px; margin-right: 7px; vertical-align: -1px; border: 1px solid var(--line); }
.wk-page .ds-subh { font-family: var(--font-display); font-weight: 600; font-size: calc(16px * var(--f)); margin-bottom: 10px; }
.wk-page .ds-counts { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin-bottom: 8px; }
.wk-page .ds-count, .wk-page .ds-prof { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; background: var(--ds-panel-2); display: grid; gap: 2px; align-content: start; }
.wk-page .ds-count .ds-v { font-family: var(--font-display); font-weight: 700; font-size: calc(24px * var(--f)); font-variant-numeric: tabular-nums; }
.wk-page .ds-estgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; }
.wk-page .ds-estgrid input { background: var(--ds-panel-2); border: 1px solid var(--line); border-radius: 8px; padding: 9px 10px; min-height: 42px; width: 100%; font-family: var(--font-mono); font-size: calc(15px * var(--f)); }
.wk-page .ds-estgrid input:hover { border-color: var(--accent); }
.wk-page .ds-result { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; }
.wk-page .ds-res { border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; display: grid; gap: 2px; align-content: start; }
.wk-page .ds-res .ds-v { font-family: var(--font-display); font-weight: 700; font-size: calc(30px * var(--f)); font-variant-numeric: tabular-nums; }
.wk-page .ds-res.is-main { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 9%, var(--bg-panel)); }
.wk-page .ds-res.is-main .ds-v { color: var(--accent); }
.wk-page .ds-tip { font-size: calc(14px * var(--f)); }
.wk-page .ds-profiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
.wk-page .ds-prof .ds-v { font-family: var(--font-display); font-weight: 700; font-size: calc(22px * var(--f)); color: var(--accent); }
.wk-page .ds-vs { border-left: 2px solid var(--accent); padding-left: 14px; }
.wk-page .ds-vs p { font-size: calc(14.5px * var(--f)); }
.wk-page .ds-tablewrap { overflow-x: auto; margin-top: 10px; max-width: 460px; }
.wk-page .ds-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; font-size: calc(14px * var(--f)); }
.wk-page .ds-table th { text-align: left; font-family: var(--font-mono); font-size: calc(11px * var(--f)); letter-spacing: .06em; text-transform: uppercase; color: var(--text-dim); font-weight: 500; padding: 6px 10px; border-bottom: 1px solid var(--line); }
.wk-page .ds-table td { padding: 8px 10px; border-bottom: 1px solid var(--line); font-family: var(--font-mono); }
.wk-page .ds-table tr.is-hl td { color: var(--accent); font-weight: 600; }

@media (max-width: 860px) {
  .wk-page .ds-main { grid-template-columns: minmax(0, 1fr); height: auto; }
  .wk-page .ds-stage { height: 380px; }
  .wk-page .ds-info { overflow: visible; }
  .wk-page .ds-hint { display: none; }
  .wk-page .ds-two, .wk-page .ds-two.is-even { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 480px) {
  .wk-page .ds-step { padding: 8px 9px; }
  .wk-page .ds-step .ds-w { display: none; }
  .wk-page .ds-settings, .wk-page .ds-settings .ds-field, .wk-page .ds-settings select { width: 100%; }
}

/* in-text links inside the guide cards */
.wk-page .ds-card p a { color: var(--text); text-decoration: underline; text-underline-offset: 3px; }
.wk-page .ds-card p a:hover { color: var(--accent); }