/* core/style.css - the house look: plain, readable, both themes. System fonts only, so pages work offline. */
:root {
  --bg: #fbfcfc; --fg: #17222c; --muted: #546371; --line: #d8dfe5; --soft: #eef3f6; --card: #ffffff;
  --accent: #1f6a8f; --accent-fg: #ffffff; --good: #2e7d4f; --good-soft: #e3f2e8; --bad: #b4412f; --bad-soft: #f8e6e2; --link: #1f6a8f;
  --water: #3f86c0; --solid: #c4893a; --vapor: #a9cfeb; --o2: #2f9a88; --n2: #a3b0bc; --co2: #7c6aa6; --sens: #e0a24a; --lat: #4f9bd1; --salt: #b46a3c; --on: #ffffff;
  --body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --num: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121a20; --fg: #e5ecf1; --muted: #9db0bf; --line: #2c3a45; --soft: #1b2630; --card: #172128;
    --accent: #6db6dc; --accent-fg: #0d1418; --good: #7fcf9e; --good-soft: #17301f; --bad: #f08a76; --bad-soft: #3a1d18; --link: #8cc8e8;
    --water: #5aa6dc; --solid: #d8a65a; --vapor: #2f5f80; --o2: #4cc1ad; --n2: #607281; --co2: #a28fd0; --sens: #c98a35; --lat: #3d82b5; --salt: #d08a5a; --on: #0d1418;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #121a20; --fg: #e5ecf1; --muted: #9db0bf; --line: #2c3a45; --soft: #1b2630; --card: #172128;
  --accent: #6db6dc; --accent-fg: #0d1418; --good: #7fcf9e; --good-soft: #17301f; --bad: #f08a76; --bad-soft: #3a1d18; --link: #8cc8e8;
  --water: #5aa6dc; --solid: #d8a65a; --vapor: #2f5f80; --o2: #4cc1ad; --n2: #607281; --co2: #a28fd0; --sens: #c98a35; --lat: #3d82b5; --salt: #d08a5a; --on: #0d1418;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.55 var(--body); }
main { max-width: 860px; margin: 0 auto; padding: 24px 16px 56px; }
a { color: var(--link); }
h1 { font-size: 1.7rem; line-height: 1.2; margin: 4px 0 8px; text-wrap: balance; }
h2 { font-size: 1.25rem; margin: 28px 0 10px; text-wrap: balance; }
h3 { font-size: 1.05rem; margin: 20px 0 6px; }
p { margin: 0 0 12px; max-width: 68ch; }
.eyebrow { font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); font-weight: 700; margin: 0; }
.muted { color: var(--muted); }
.formula { font-family: var(--num); font-size: .95rem; background: var(--soft); border-radius: 8px; padding: 10px 14px; margin: 4px 0 14px; overflow-x: auto; white-space: pre-wrap; }
.callout { border-left: 4px solid var(--accent); background: var(--soft); border-radius: 0 8px 8px 0; padding: 10px 14px; margin: 14px 0; max-width: 68ch; }
.callout.trap { border-left-color: var(--bad); }
.callout b { display: block; margin-bottom: 2px; }

/* tabs and controls */
.bar { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between; margin: 16px 0 8px; }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; }
.tabs button, .seg button { font: inherit; font-size: .92rem; border: 1px solid var(--line); background: var(--card); color: var(--fg); padding: 6px 14px; border-radius: 999px; cursor: pointer; }
.tabs button[aria-selected="true"], .seg button[aria-pressed="true"] { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.seg { display: flex; gap: 4px; align-items: center; font-size: .85rem; color: var(--muted); flex-wrap: wrap; }
.seg button { font-size: .82rem; padding: 4px 10px; }
button:focus-visible, a:focus-visible, input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn { font: inherit; border: 0; background: var(--accent); color: var(--accent-fg); padding: 9px 18px; border-radius: 8px; cursor: pointer; font-weight: 600; }
.btn.ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn:disabled { opacity: .45; cursor: default; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-top: 14px; }

/* lesson list */
.lessons { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.lessons button { all: unset; box-sizing: border-box; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 4px 14px; width: 100%; padding: 14px 16px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; cursor: pointer; }
.lessons button:hover { border-color: var(--accent); }
.lessons button:focus-visible { outline: 2px solid var(--accent); }
.lessons .n { font-family: var(--num); color: var(--accent); font-weight: 600; }
.lessons .t { font-weight: 600; }
.lessons .m { color: var(--muted); font-size: .88rem; text-align: right; white-space: nowrap; }
.lessons .d { grid-column: 2 / -1; color: var(--muted); font-size: .9rem; }

/* a problem */
.problem { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 18px; margin: 12px 0; }
.problem .stem { font-size: 1.02rem; margin-bottom: 14px; max-width: none; }
.choices { display: grid; gap: 8px; }
.choice { display: flex; gap: 10px; align-items: flex-start; border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; cursor: pointer; }
.choice input { margin-top: 4px; }
.choice .v { font-family: var(--num); font-variant-numeric: tabular-nums; }
.choices.words .choice .v { font-family: inherit; }   /* concept statements read as words */
.choice .why { display: block; font-size: .86rem; color: var(--muted); margin-top: 2px; }
.choice.right { border-color: var(--good); background: var(--good-soft); }
.choice.wrong { border-color: var(--bad); background: var(--bad-soft); }
.verdict { font-weight: 700; margin: 12px 0 4px; }
.verdict.good { color: var(--good); } .verdict.bad { color: var(--bad); }
.steps { margin: 6px 0 0; padding-left: 1.3em; }
.steps li { margin: 4px 0; font-variant-numeric: tabular-nums; }
details { margin-top: 10px; }
summary { cursor: pointer; color: var(--accent); font-weight: 600; }
.tally { font-size: .9rem; color: var(--muted); }

/* the reference sheet */
.ref { border-top: 1px solid var(--line); padding-top: 6px; }
.ref h3 { margin-top: 18px; }
.sym { width: 100%; border-collapse: collapse; font-size: .9rem; margin: 6px 0 4px; }
.sym td, .sym th { text-align: left; padding: 4px 8px 4px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.sym th { font-size: .75rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); font-weight: 600; }
.sym td:first-child { font-family: var(--num); white-space: nowrap; }
.scroll { overflow-x: auto; }

.notice { margin-top: 40px; font-size: .85rem; color: var(--muted); border-top: 1px solid var(--line); padding-top: 12px; }
.notice p { margin: 6px 0; max-width: 72ch; }
.err { background: var(--bad-soft); color: var(--fg); border-left: 4px solid var(--bad); padding: 12px 14px; border-radius: 0 8px 8px 0; }
@media (max-width: 560px) {
  body { font-size: 16px; }
  .lessons button { grid-template-columns: auto minmax(0, 1fr); }
  .lessons .m { grid-column: 2; text-align: left; }
}
select { font: inherit; max-width: 100%; min-width: 0; padding: 4px 6px; border: 1px solid var(--line); border-radius: 6px; background: var(--card); color: var(--fg); }

/* the lesson visuals (core/visuals.js) */
.visual { margin: 18px 0; padding: 14px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.v-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
/* a P&ID the question is read from (Visuals.figure kind 'pid'): drawn black on its own light sheet in either theme, wide enough to read, scrolled on a phone */
.pid-wrap { background: #f7f7f3; border-radius: 6px; }
.visual.pid-fig .pid-wrap svg { display: block; width: 100%; min-width: 760px; max-width: none; height: auto; }
.pid-ring { fill: none; stroke: #d9480f; stroke-width: 5; }
/* the charts questions are read from (Visuals.figure; 22 Oct 2026): a fine grid to read values, the lines by kind */
.figure svg { min-width: 560px; }
.vf-minor { stroke: var(--line); stroke-width: .6; }
.vf-major { stroke: var(--muted); stroke-width: .9; opacity: .55; }
.vf-sat { stroke: var(--fg); stroke-width: 2.6; }
.vf-isobar { stroke: var(--accent); stroke-width: 1.5; }
.vf-isotherm { stroke: var(--bad); stroke-width: 1.3; stroke-dasharray: 7 4; }
.vf-quality { stroke: var(--muted); stroke-width: 1.1; stroke-dasharray: 2 3; }
/* the psychrometric chart (th-psychro): relative humidity curves, wet-bulb lines dashed, enthalpy and volume lines thin */
.vf-rh { stroke: var(--accent); stroke-width: 1.2; } .vf-wb { stroke: var(--bad); stroke-width: 1.1; stroke-dasharray: 6 4; }
.vf-enth { stroke: var(--muted); stroke-width: .9; } .vf-vol { stroke: var(--good); stroke-width: 1; opacity: .8; }
.vf-lab-rh { fill: var(--accent); font-weight: 600; } .vf-lab-wb { fill: var(--bad); } .vf-lab-enth { fill: var(--muted); } .vf-lab-vol { fill: var(--good); }
.vf-isentrope { stroke: var(--accent); stroke-width: 1.1; } .vf-lab-isentrope { fill: var(--accent); }
.vf-lab { font: 11px var(--body); }
.vf-eq { stroke: var(--fg); stroke-width: 2.4; } .vf-diag { stroke: var(--muted); stroke-width: 1.2; }
.vf-op { stroke: var(--accent); stroke-width: 2; } .vf-qline { stroke: var(--bad); stroke-width: 1.8; stroke-dasharray: 7 4; }
.vf-marks { stroke: var(--good); stroke-width: 2; }
.vf-pump { stroke: var(--accent); stroke-width: 2.2; } .vf-system { stroke: var(--bad); stroke-width: 2.2; stroke-dasharray: 8 5; }
.vf-lab-pump { fill: var(--accent); font-weight: 600; } .vf-lab-system { fill: var(--bad); font-weight: 600; }
.vf-lab-eq { fill: var(--fg); font-weight: 600; } .vf-lab-diag { fill: var(--muted); } .vf-lab-op { fill: var(--accent); font-weight: 600; } .vf-lab-qline { fill: var(--bad); }
.vf-lab-isobar { fill: var(--accent); font-weight: 600; } .vf-lab-isotherm { fill: var(--bad); } .vf-lab-quality { fill: var(--muted); }
.visual svg { width: 100%; min-width: 560px; height: auto; display: block; }
.visual figcaption { font-size: .88rem; color: var(--muted); margin-top: 6px; }
.v-label { font: 13px var(--body); fill: var(--fg); }
.v-strong { font-weight: 600; } .v-muted { fill: var(--muted); }
.v-on { font: 600 12px var(--body); fill: var(--on); }
.v-vessel { fill: var(--soft); stroke: var(--muted); stroke-width: 2; }
.v-pipe { stroke: var(--muted); } .v-arrowhead { fill: var(--muted); }
.v-steam { stroke: var(--vapor); stroke-dasharray: 6 5; }
.v-feed { stroke: var(--accent); } .v-loop { stroke: var(--salt); }
.v-water { fill: var(--water); } .v-soft { opacity: .35; } .v-solid { fill: var(--solid); } .v-vapor { fill: var(--vapor); }
.v-o2 { fill: var(--o2); } .v-n2 { fill: var(--n2); } .v-co2 { fill: var(--co2); }
.v-sens { fill: var(--sens); } .v-lat { fill: var(--lat); } .v-area { opacity: .45; } .v-salt { fill: var(--salt); }
.v-axis { stroke: var(--muted); stroke-width: 1.5; } .v-grid { stroke: var(--line); stroke-width: 1.5; stroke-dasharray: 4 4; }
.v-line { stroke: var(--fg); stroke-width: 2.5; } .v-dash { stroke-dasharray: 7 6; stroke: var(--bad); }
.v-stroke-sens { stroke: var(--sens); stroke-width: 3; } .v-stroke-lat { stroke: var(--lat); stroke-width: 3; }
.v-step { stroke: var(--muted); stroke-width: 1.5; } .v-sw.v-step-sw { background: var(--muted); height: 2px; }
.v-dot { fill: var(--accent); } .v-next { stroke: var(--muted); stroke-dasharray: 5 5; stroke-width: 2; } .v-bracket { stroke: var(--muted); stroke-width: 1.5; }
.v-ctl { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 10px; align-items: center; margin-top: 10px; font-size: .92rem; }
.v-ctl input { width: 100%; accent-color: var(--accent); }
.v-val { font-family: var(--num); font-variant-numeric: tabular-nums; min-width: 7ch; text-align: right; }
.v-read { margin: 8px 0 0; font-size: .95rem; }
.v-legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: .82rem; color: var(--muted); margin-top: 8px; }
.v-legend span { display: inline-flex; align-items: center; gap: 6px; }
.v-sw { display: inline-block; width: 14px; height: 10px; border-radius: 2px; }
.v-sw.v-line-sw { background: var(--fg); height: 3px; } .v-sw.v-dash-sw { background: var(--bad); height: 3px; }
.v-sw.v-water { background: var(--water); } .v-sw.v-solid { background: var(--solid); } .v-sw.v-vapor { background: var(--vapor); }
.v-sw.v-o2 { background: var(--o2); } .v-sw.v-n2 { background: var(--n2); } .v-sw.v-co2 { background: var(--co2); }
.v-sw.v-sens { background: var(--sens); } .v-sw.v-lat { background: var(--lat); } .v-sw.v-feed { background: var(--accent); } .v-sw.v-loop { background: var(--salt); }
.v-sw.v-salt { background: var(--salt); } .v-sw.v-stroke-sens-sw { background: var(--sens); height: 3px; } .v-sw.v-stroke-lat-sw { background: var(--lat); height: 3px; }
@media (max-width: 560px) { .v-ctl { grid-template-columns: minmax(0, 1fr) auto; } .v-ctl input { grid-column: 1 / -1; grid-row: 2; } }

/* reference search, and the exam formats (core/items.js) */
.ref-search { font: inherit; width: 100%; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--fg); margin: 4px 0 8px; }
.ref-lesson { color: var(--accent); }
.fill { display: flex; gap: 8px; align-items: center; }
.fill input { font: inherit; font-family: var(--num); width: 12ch; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--fg); }
.fill .unit { font-family: var(--num); }
ol.order { list-style: none; padding-left: 0; margin: 0; display: grid; gap: 6px; counter-reset: st; }
ol.order li::before { counter-increment: st; content: counter(st) "."; flex: none; min-width: 1.4em; color: var(--muted); font-variant-numeric: tabular-nums; }   /* a flex item shows no list marker, so the number is drawn */
ol.order .txt { flex: 1; min-width: 0; }
ol.order li { display: flex; gap: 10px; align-items: center; justify-content: space-between; border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; background: var(--card); cursor: grab; }
ol.order li.drag { opacity: .5; }
ol.order .btns { display: flex; gap: 4px; flex: none; }
.mv { font: inherit; width: 32px; height: 32px; border: 1px solid var(--line); border-radius: 6px; background: var(--soft); color: var(--fg); cursor: pointer; }
.mv:disabled { opacity: .35; cursor: default; }
svg.hot { width: 100%; min-width: 560px; height: auto; display: block; background: var(--card); border: 1px solid var(--line); border-radius: 10px; }
.hs { cursor: pointer; outline: none; }
.hs-hit { stroke: transparent; stroke-width: 22; }
.hs-line { stroke: var(--muted); stroke-width: 4; }
.hs:hover .hs-line, .hs:focus .hs-line { stroke: var(--accent); }
.hs.on .hs-line { stroke: var(--accent); stroke-width: 7; }
.hs.on text { font-weight: 700; fill: var(--accent); }
.hs-unit:hover .v-vessel, .hs-unit:focus .v-vessel { stroke: var(--accent); }
.hs-unit.on .v-vessel { stroke: var(--accent); stroke-width: 4; }

/* the test screen (test.html) */
.btn.sm { padding: 6px 12px; font-size: .88rem; }
.totals { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; margin: 8px 0 16px; }
.totals div { background: var(--soft); border-radius: 10px; padding: 12px 14px; }
.totals b { display: block; font: 600 1.3rem/1.2 var(--num); font-variant-numeric: tabular-nums; }
.totals span { color: var(--muted); font-size: .9rem; }
.test-opts h3 { margin-top: 14px; }
.choice b { display: block; }
.tests { display: grid; gap: 10px; }
.test-card { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.test-card > div:first-child { display: grid; gap: 2px; min-width: 0; }
.test-card .row { margin-top: 0; max-width: 100%; flex-wrap: wrap; }
.test-card select { max-width: calc(100vw - 72px); min-width: 0; }   /* a long area name (FE Mechanical: "Measurements, instrumentation and controls") stays inside a phone's width */
.exam-bar { position: sticky; top: 0; z-index: 5; display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; justify-content: space-between; background: var(--bg); border-bottom: 1px solid var(--line); padding: 10px 0; margin-bottom: 8px; }
.eb-left { display: grid; gap: 0; } .eb-right { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.eb-timer { font: 600 1rem var(--num); font-variant-numeric: tabular-nums; padding: 4px 10px; border-radius: 6px; background: var(--soft); }
.eb-timer.low { background: var(--bad-soft); color: var(--bad); }
.qgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(46px, 1fr)); gap: 6px; margin: 10px 0; }
.qcell { font: 600 .9rem var(--num); height: 40px; border: 1px solid var(--line); border-radius: 6px; background: var(--card); color: var(--fg); cursor: pointer; position: relative; }
.qcell.done { background: var(--soft); border-color: var(--accent); }
.qcell.flag::after { content: '⚑'; position: absolute; top: 1px; right: 4px; font-size: .7rem; color: var(--bad); }
.ref-panel { position: fixed; top: 0; right: 0; bottom: 0; width: min(460px, 100vw); overflow-y: auto; background: var(--bg); border-left: 1px solid var(--line); box-shadow: -8px 0 24px rgba(0,0,0,.12); padding: 14px 16px; z-index: 20; }
.ref-panel .row { justify-content: space-between; }
.ref-panel .ref h2 { font-size: 1.05rem; } .ref-panel .ref-doc h3 { font-size: .95rem; }
.qresult { border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; margin: 6px 0; background: var(--card); }
.qresult summary { color: var(--fg); font-weight: 500; display: flex; gap: 10px; }
.qresult .mark { font-weight: 700; } .qresult.ok .mark { color: var(--good); } .qresult.no .mark { color: var(--bad); }
.qresult .stem { margin-top: 8px; }

/* landing and progress pages */
.lede-big { font-size: 1.12rem; max-width: 62ch; }
a.btn { display: inline-block; text-decoration: none; }
.why-these { max-width: 46rem; } .why-these p { margin: 0 0 10px; }   /* "Why these exams" on the chooser (Jeff, 22 Oct 2026) */
.how { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin: 8px 0 20px; }
.how > div { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.how p { margin: 4px 0 0; font-size: .92rem; color: var(--muted); }
.topic-link { box-sizing: border-box; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 4px 14px; width: 100%; padding: 12px 16px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; color: var(--fg); text-decoration: none; }
a.topic-link:hover { border-color: var(--accent); }
.topic-link.off { opacity: .6; }
.topic-link .n { font-family: var(--num); color: var(--accent); font-weight: 600; } .topic-link .t { font-weight: 600; }
.topic-link .m { color: var(--muted); font-size: .88rem; text-align: right; white-space: nowrap; }
.topic-link .d { grid-column: 2 / -1; color: var(--muted); font-size: .9rem; }
svg.trend { width: 100%; min-width: 0; height: auto; display: block; }   /* not the 560 px floor of a lesson picture: the trend fits a phone */
.prog td { white-space: nowrap; } .sym.prog td:first-child { white-space: normal; font-family: var(--body); }
.state-passed { color: var(--good); font-weight: 600; } .state-refresh { color: var(--bad); font-weight: 600; } .state-none { color: var(--muted); }
@media (max-width: 560px) { .topic-link { grid-template-columns: auto minmax(0, 1fr); } .topic-link .m { grid-column: 2; text-align: left; } }

/* the doors on the landing page */
.doors { display: flex; flex-wrap: wrap; gap: 6px; margin: 6px 0 14px; }
.doors a { font-size: .9rem; text-decoration: none; color: var(--fg); border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; }
.doors a.on { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }

/* flag this question (core/feedback.js) */
.flag { margin-top: 10px; }
.flag-link { all: unset; cursor: pointer; font-size: .85rem; color: var(--muted); }
.flag-link:hover, .flag-link:focus-visible { color: var(--bad); text-decoration: underline; }
.flag-form { border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; margin-top: 6px; display: grid; gap: 8px; background: var(--soft); }
.flag-kinds { display: grid; gap: 4px; font-size: .9rem; }
.flag-form textarea, .flag-dump { font: inherit; font-size: .9rem; width: 100%; border: 1px solid var(--line); border-radius: 6px; padding: 6px 8px; background: var(--card); color: var(--fg); }

[hidden] { display: none !important; }
/* a procedure order, revealed: each rule broken, with its reason */
ul.broken { margin: 4px 0 0; padding-left: 1.2em; display: grid; gap: 8px; }
ul.broken .pair { display: block; font-weight: 600; }
ul.broken .why { display: block; font-size: .92rem; color: var(--muted); }
ol.order.locked li { cursor: default; }

/* the top bar on every page (core/nav.js); hidden inside a running test, where the test's own bar stands */
.topnav { position: sticky; top: 0; z-index: 10; background: var(--bg); border-bottom: 1px solid var(--line); }
/* the gaps fit brand, links, units, Home and "Sign in" on one row from about 900 px (at 20 px "Sign in" wrapped at 1000 px) */
.tn-in { max-width: 860px; margin: 0 auto; padding: 8px 16px; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; }
body:has(main.prices) .tn-in { max-width: 1040px; }   /* the prices page is wider (three cards): its bar lines up with it */
.tn-brand { font-weight: 700; color: var(--fg); text-decoration: none; font-size: .98rem; }
.tn-brand:hover { color: var(--accent); }
.tn-links { display: flex; flex-wrap: wrap; gap: 4px 16px; }
.tn-links a { color: var(--muted); text-decoration: none; font-size: .93rem; padding: 4px 0; border-bottom: 2px solid transparent; }
.tn-links a:hover { color: var(--fg); }
.tn-links a[aria-current="page"] { color: var(--fg); border-bottom-color: var(--accent); }
.tn-units { margin-left: auto; flex-wrap: nowrap; }
/* Home: a button-styled link with a house (core/nav.js), like the home site's own bordered controls */
.tn-home { display: inline-flex; align-items: center; gap: 5px; color: var(--fg); text-decoration: none; font-size: .86rem; font-weight: 600; line-height: 1.2;
  white-space: nowrap; border: 1px solid var(--muted); border-radius: 8px; padding: 4px 10px; }
.tn-home svg { flex: none; }
.tn-home:hover { border-color: var(--accent); color: var(--accent); }
.tn-account:empty { display: none; }
.tn-account { display: flex; align-items: center; gap: 8px; min-width: 0; font-size: .9rem; }
.tn-account a { color: var(--link); font-weight: 600; text-decoration: none; white-space: nowrap; }
.tn-account a:hover { text-decoration: underline; }
.tn-who { color: var(--muted); max-width: 24ch; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tn-who.tn-off { color: var(--warn); }
.tn-out { font: inherit; font-size: .86rem; background: transparent; color: var(--fg); border: 1px solid var(--line); border-radius: 6px; padding: 3px 9px; cursor: pointer; white-space: nowrap; }
.tn-out:hover { border-color: var(--accent); }
body.in-exam .topnav { display: none; }
@media (max-width: 640px) {
  .tn-in { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; grid-template-areas: "brand units home" "links links links" "acct acct acct"; gap: 4px 8px; padding: 6px 16px; }
  .tn-brand { grid-area: brand; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; } .tn-links { grid-area: links; gap: 2px 16px; } .tn-units { grid-area: units; } .tn-account { grid-area: acct; align-self: center; }
  .tn-home { grid-area: home; padding: 3px 6px; gap: 4px; font-size: .8rem; }
  .tn-brand { font-size: .9rem; }
  .tn-ulabel { display: none; }
  .tn-units button { padding: 3px 6px; }
  /* "Sign in" ends the links' row; signed in, the address and "Sign out" take a row of their own under the links */
  .tn-in:has(#nav-signin) { grid-template-areas: "brand units home" "links links links"; grid-template-columns: minmax(0, 1fr) auto auto; }
  .tn-in:has(#nav-signin) .tn-links { padding-right: 62px; }
  .tn-in:has(#nav-signin) .tn-account { grid-area: 2 / 2 / 3 / 4; justify-self: end; align-self: start; padding-top: 4px; }
  .tn-in:has(.tn-who) { grid-template-areas: "brand units home" "links links links" "acct acct acct"; grid-template-columns: minmax(0, 1fr) auto auto; }
  .tn-in:has(.tn-who) .tn-account { justify-content: flex-end; }
}
/* the browser keeps nothing (Progress.canStore) */
.store-warn { background: var(--bad-soft); color: var(--fg); border-left: 4px solid var(--bad); border-radius: 0 8px 8px 0; padding: 10px 14px; margin: 0 0 16px; font-weight: 600; max-width: 68ch; }

/* the discipline page (index.html) */
.disc { border-top: 1px solid var(--line); padding: 18px 0 6px; }
.disc h3 { margin: 0 0 10px; font-size: 1.2rem; }
.doors3 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.door { display: grid; gap: 4px; align-content: start; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; color: var(--fg); text-decoration: none; }
a.door:hover { border-color: var(--accent); }
.door b { font-size: 1.1rem; }
.door .muted { font-size: .92rem; }
.door .price { font-size: .88rem; font-weight: 600; color: var(--good); }
.door .go { color: var(--link); font-weight: 600; font-size: .95rem; margin-top: 4px; }
.door.big { grid-column: 1 / -1; border: 2px solid var(--accent); padding: 20px 22px; }
.door.big b { font-size: 1.3rem; }
.door .tag { justify-self: start; font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 700; color: var(--accent-fg); background: var(--accent); border-radius: 999px; padding: 2px 10px; }
.disc.later { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 4px 16px; padding: 12px 0; color: var(--muted); }
.door.closed { opacity: .7; } .door.closed .price { color: var(--muted); }   /* a discipline shown before it opens (core/products.js open: false) */
.disc.soon > h3 + span { color: var(--muted); font-size: .9rem; }
.disc.later h3 { margin: 0; font-size: 1.05rem; color: var(--muted); }
@media (max-width: 560px) { .doors3 { grid-template-columns: minmax(0, 1fr); } }

/* lesson to lesson, at the foot of a lesson (topic.html) */
.lesson-nav { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 10px; margin-top: 28px; padding-top: 16px; border-top: 1px solid var(--line); }
.lesson-nav button { font: inherit; text-align: left; display: grid; gap: 2px; background: var(--card); color: var(--fg); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; cursor: pointer; min-width: 0; }
.lesson-nav button:hover { border-color: var(--accent); }
.lesson-nav .next { grid-column: 2; text-align: right; }
.lesson-nav small { color: var(--muted); font-size: .8rem; }
.lesson-nav span { font-weight: 600; overflow-wrap: anywhere; }
.h-note { font-size: .85rem; font-weight: 400; }
.bad-text { color: var(--bad); font-weight: 600; }
html { scroll-padding-top: 96px; }   /* an anchor or scrollIntoView lands below the sticky top bar */

/* the diagnostic and the study plan (MANAGER.md 14): verdict tags, the plan's days, the outline's Today */
:root { --warn: #8a5a00; --warn-soft: #fbf0d9; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --warn: #e5b85c; --warn-soft: #33280f; } }
:root[data-theme="dark"] { --warn: #e5b85c; --warn-soft: #33280f; }
.vt { display: inline-block; font-size: .76rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; padding: 1px 8px; border-radius: 999px; white-space: nowrap; font-family: var(--body); }
.vt-weak { color: var(--bad); background: var(--bad-soft); } .vt-fair { color: var(--warn); background: var(--warn-soft); } .vt-ready { color: var(--good); background: var(--good-soft); }
.plan-form { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; margin: 8px 0 12px; }
.plan-form label { display: flex; gap: 8px; align-items: center; font-weight: 600; }
.plan-form input[type="date"] { font: inherit; padding: 6px 8px; border: 1px solid var(--line); border-radius: 6px; background: var(--card); color: var(--fg); }
.plan-week { margin: 10px 0; }
.plan-week > summary { padding: 6px 0; }
.plan-week > summary .muted { font-weight: 400; }
.plan-days { list-style: none; padding: 0; margin: 6px 0 0; display: grid; gap: 8px; }
.plan-day { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; }
.plan-day.is-today { border: 2px solid var(--accent); }
.plan-day.k-full { border-left: 4px solid var(--accent); }
.plan-day.k-light, .plan-day.k-exam { background: var(--soft); }
.pd-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2px 12px; font-weight: 600; }
.pd-min { color: var(--muted); font-weight: 400; font-size: .9rem; }
.pd-items { margin: 4px 0 0; padding-left: 1.2em; }
.pd-items li { margin: 3px 0; overflow-wrap: anywhere; }
.pi-min { color: var(--muted); font-size: .88rem; white-space: nowrap; }
.today-box { border: 2px solid var(--accent); background: var(--card); border-radius: 12px; padding: 14px 16px; margin: 0 0 22px; }
.today-box h2 { margin: 0 0 2px; font-size: 1.15rem; }
.today-box .row { margin-top: 10px; }
.copy-dump { margin-top: 8px; }
/* the daily e-mail prompts switch on the progress page (STEP2.md B4) */
.prompts { display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: center; margin: 12px 0 4px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); }
.prompts p { margin: 0; }
.prompts-ways { flex-basis: 100%; display: grid; gap: 6px; padding-top: 4px; }   /* the two ways the prompts come (22 Oct 2026) */
.prompts-ways .way { display: flex; gap: 8px; align-items: baseline; font-size: .95rem; cursor: pointer; overflow-wrap: anywhere; }
.prompts-ways .way input { flex: none; }
.prompts-ways .way:has(input:disabled) { cursor: default; color: var(--muted); }
.prompts-push-note { color: var(--muted); font-size: .88rem; }
.prompts-push-note:empty { display: none; }
.switch { display: inline-flex; gap: 10px; align-items: center; font-weight: 600; cursor: pointer; }
.switch input { appearance: none; -webkit-appearance: none; position: relative; width: 42px; height: 24px; margin: 0; border-radius: 999px; background: var(--line); cursor: pointer; flex: none; transition: background .15s; }
.switch input::after { content: ''; position: absolute; top: 3px; left: 3px; width: 18px; height: 18px; border-radius: 50%; background: var(--card); box-shadow: 0 1px 2px rgba(0,0,0,.3); transition: left .15s; }
.switch input:checked { background: var(--accent); }
.switch input:checked::after { left: 21px; }
.switch input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.prompts-note { color: var(--muted); font-size: .92rem; overflow-wrap: anywhere; }
.test-card.is-picked { border-color: var(--accent); border-width: 2px; }
.sym.by-area td:first-child { font-family: var(--body); white-space: normal; }

/* the sign-in page (signin.html) */
.signin #box { max-width: 34rem; }
.signin h1 { overflow-wrap: anywhere; }
.signin-form { margin: 14px 0 6px; }
.signin-form label { display: block; font-weight: 600; margin-bottom: 6px; }
.signin-row { display: flex; flex-wrap: wrap; gap: 8px 10px; }
.signin-row input[type="email"] { font: inherit; flex: 1 1 14rem; min-width: 0; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--fg); }
.signin-row input[type="email"]:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.signin .small { font-size: .88rem; }

/* the owner's view (owner.html, STEP2.md B3) */
.owner-only { font-size: 1.05rem; margin-top: 18px; }
.ow-list { display: grid; grid-template-columns: minmax(0, 1fr); gap: 10px; margin-top: 12px; }
.ow-tester { min-width: 0; border: 1px solid var(--line); border-radius: 10px; background: var(--card); padding: 0 14px; }
.ow-tester[open] { padding-bottom: 12px; }
.ow-tester > summary { cursor: pointer; padding: 11px 0; display: flex; flex-wrap: wrap; gap: 2px 10px; align-items: baseline; }
.ow-name { font-weight: 700; overflow-wrap: anywhere; }
.ow-meta { font-size: .88rem; }
.ow-product { border-top: 1px solid var(--line); margin-top: 10px; padding-top: 6px; }
.ow-product h4, .ow-tester > h4 { margin: 8px 0 4px; font-size: 1rem; }
.ow-tester > h4 { border-top: 1px solid var(--line); padding-top: 12px; margin-top: 14px; }
.ow-result h5, .ow-product h5 { margin: 12px 0 2px; font-size: .92rem; }
.ow-result p, .ow-date { margin: 2px 0; }
.ow-all summary { cursor: pointer; color: var(--link); font-size: .9rem; margin-top: 8px; }
.ow-flag { border-left: 4px solid var(--warn); background: var(--soft); border-radius: 0 8px 8px 0; padding: 8px 12px; margin: 10px 0; }
.ow-flag-head { margin: 0 0 4px; overflow-wrap: anywhere; font-size: .92rem; }
.ow-note { margin: 4px 0 8px; padding: 6px 10px; border-left: 2px solid var(--line); background: var(--card); white-space: pre-wrap; overflow-wrap: anywhere; }
.ow-choices .choice { cursor: default; }
.ow-match { font-size: .86rem; color: var(--good); margin: 6px 0; }
.ow-match.bad { color: var(--bad); }
.ow-kv { font-size: .92rem; }
.ow-item > p.muted { display: none; }   /* "drag the steps": nothing to do here */

/* the prices page (prices.html, STEP3.md B1; redesigned 21 Oct 2026): an opening band, two tabs (pay once, month to
   month), three cards with the path raised in the middle (first on a phone), what is in it, the Starter note, PTEC, FAQ */
.prices { max-width: 1040px; }
.prices h2 { font-size: 1.35rem; }
.pr-band { background: var(--soft); border: 1px solid var(--line); border-radius: 16px; padding: 26px 28px 22px; margin: 4px 0 18px; }
.pr-band h1 { font-size: 2.1rem; letter-spacing: -.01em; margin: 6px 0 8px; }
.pr-band-lede { font-size: 1.05rem; color: var(--muted); max-width: 62ch; margin-bottom: 18px; }
.pr-steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.pr-step { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 16px 14px; display: grid; grid-template-rows: auto auto 1fr auto; align-content: start; }
.pr-step h2 { font-size: 1.15rem; margin: 8px 0 4px; }
.pr-step p { font-size: .93rem; margin: 0 0 12px; }
.pr-step-n { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: var(--accent-fg); font-weight: 700; font-size: .9rem; }
.pr-demo { border-top: 1px dashed var(--line); padding-top: 10px; font-size: .82rem; display: grid; gap: 5px; align-self: end; }
.pr-demo-find span { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.pr-demo-find i { font-style: normal; color: var(--muted); min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pr-demo-mail { background: var(--soft); border: 0; border-left: 3px solid var(--accent); border-radius: 0 8px 8px 0; padding: 8px 10px; }
.pr-mail-label { font-size: .7rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.pr-mail-h { font-weight: 700; }
.pr-mail-go { justify-self: start; background: var(--accent); color: var(--accent-fg); font-weight: 600; border-radius: 6px; padding: 2px 10px; }
.pr-demo-time { padding: 14px 8px 2px; }
.pr-tl { position: relative; height: 4px; background: var(--line); border-radius: 2px; margin: 4px 6px 0; }
.pr-tl i { position: absolute; top: 50%; width: 10px; height: 10px; margin: -5px 0 0 -5px; border-radius: 50%; background: var(--good); }
.pr-tl i:first-child { background: var(--accent); }
.pr-tl-l { position: relative; height: 1.4em; margin: 6px 6px 0; color: var(--muted); }
.pr-tl-l b { position: absolute; transform: translateX(-50%); font-weight: 400; white-space: nowrap; }
.pr-tl-l b:first-child { transform: none; margin-left: -6px; }
.pr-tl-l b:last-child { transform: translateX(-100%); margin-left: 6px; }
.pr-adapt { margin: 14px 0 0; font-size: .98rem; max-width: none; }
.pr-adapt b { color: var(--accent); }

.pr-beta { display: grid; gap: 2px; background: var(--good-soft); border: 1px solid var(--good); border-radius: 10px; padding: 12px 16px; margin: 16px 0 8px; }
.pr-beta b { color: var(--good); font-size: 1.02rem; }
.pr-beta span { font-size: .92rem; }
.pr-beta[hidden] { display: none; }

.pr-plans-h { text-align: center; margin-top: 30px; }
.pr-tabs { display: flex; justify-content: center; gap: 0; margin: 4px auto 6px; width: max-content; max-width: 100%; background: var(--soft); border: 1px solid var(--line); border-radius: 999px; padding: 4px; }
.pr-tabs[hidden] { display: none; }
.pr-tabs button { font: inherit; font-weight: 600; font-size: .98rem; border: 0; background: transparent; color: var(--muted); padding: 8px 22px; border-radius: 999px; cursor: pointer; white-space: nowrap; }
.pr-tabs button[aria-selected="true"] { background: var(--card); color: var(--fg); box-shadow: 0 1px 3px rgba(0, 0, 0, .18); }
.pr-tabs button:hover { color: var(--fg); }
.pr-pane[hidden] { display: none; }
.pr-pane:focus-visible { outline: 2px solid var(--accent); outline-offset: 6px; border-radius: 8px; }
.pr-pane-h { text-align: center; font-size: 1.15rem; margin: 22px 0 2px; }
.pr-tabbed .pr-pane-h { display: none; }   /* the tab names the pane */
.pr-pane-lede { text-align: center; color: var(--muted); margin: 0 auto 6px; }
.pr-pane-note { text-align: center; margin: 12px auto 0; font-size: .92rem; }
.pr-cards3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 16px; align-items: stretch; padding-top: 22px; }
/* the three cards share their rows (title, term, price, per month, list, button, add-on), so the prices and buttons line up */
@supports (grid-template-rows: subgrid) {
  .pr-cards3 > .pr-card { display: grid; grid-row: span 7; grid-template-rows: subgrid; align-content: start; } .pr-cards3 > .pr-card > .tag { position: absolute; }
  .pr-cards2 > .pr-card { display: grid; grid-row: span 6; grid-template-rows: subgrid; align-content: start; }
}
.pr-cards2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 16px; max-width: 700px; margin: 0 auto; padding-top: 14px; }
.pr-card { position: relative; display: flex; flex-direction: column; gap: 6px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px 20px 18px; min-width: 0; }
.pr-card h3 { font-size: 1.2rem; margin: 0; }
.pr-term { color: var(--muted); font-size: .9rem; margin: 0; }
.pr-card .amt { margin: 8px 0 0; font-size: 2.2rem; font-weight: 700; line-height: 1.1; font-variant-numeric: tabular-nums; }
.amt small { font-size: .86rem; font-weight: 400; color: var(--muted); }
.pr-per { font-size: .88rem; color: var(--muted); margin: 0; }
.pr-feat { list-style: none; padding: 10px 0 0; margin: 6px 0 0; border-top: 1px solid var(--line); display: grid; gap: 6px; align-content: start; font-size: .92rem; }
.pr-feat li { padding-left: 22px; position: relative; }
.pr-feat li::before { content: ""; position: absolute; left: 3px; top: .42em; width: 9px; height: 5px; border-left: 2px solid var(--good); border-bottom: 2px solid var(--good); transform: rotate(-45deg); }
.pr-card .pr-act { margin-top: auto; padding-top: 14px; }
.pr-card .pr-act .btn { font-size: .95rem; }
.pr-act .btn { width: 100%; }
.pr-act .btn:disabled { opacity: 1; background: var(--soft); color: var(--muted); border: 1px dashed var(--line); font-weight: 600; }
.pr-ptec-act { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }   /* PTEC's buy button beside Open PTEC */
.pr-ptec-act .btn { width: auto; }
/* the path: raised, in the middle */
.pr-card.best { border: 2px solid var(--accent); box-shadow: 0 14px 34px -14px rgba(16, 60, 90, .45); transform: translateY(-14px); padding-top: 26px; }
.pr-card.best .amt { color: var(--accent); font-size: 2.6rem; }
.pr-card.best .tag { position: absolute; top: -13px; left: 50%; transform: translateX(-50%); white-space: nowrap; font-size: .74rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 700; color: var(--accent-fg); background: var(--accent); border-radius: 999px; padding: 3px 12px; }
/* the 3-month extension, offered only inside the FE and PE 6-month cards (Jeff, 22 Oct 2026) */
/* the extension: one text link under the card's button (each card has one button) */
.pr-ext { margin: 10px 0 0; font-size: .88rem; text-align: center; color: var(--muted); }
.pr-ext-link { color: var(--accent); font-weight: 600; text-decoration: none; }
a[href].pr-ext-link:hover { text-decoration: underline; }
.pr-ext-link.is-off { color: var(--muted); font-weight: 500; cursor: default; }   /* the beta: plain text, no address */
.pr-ext-link.is-off .pr-arr { display: none; }
.pr-ext-off { display: block; width: max-content; margin: 4px auto 0; font-size: .7rem; text-transform: uppercase; letter-spacing: .06em; border: 1px dashed var(--line); border-radius: 999px; padding: 0 7px; white-space: nowrap; vertical-align: 1px; }
/* the SIMs Starter: a note under the cards, not a card */
.pr-addon { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px 18px; align-items: center; margin: 22px 0 6px; padding: 12px 16px; border-left: 4px solid var(--accent); background: var(--soft); border-radius: 0 10px 10px 0; }
.pr-addon-txt { display: grid; gap: 2px; font-size: .92rem; }
.pr-addon .pr-act .btn { width: auto; white-space: nowrap; }
.pr-addon .pr-act .btn:disabled { background: transparent; }
.pr-pay { font-size: .88rem; }
/* what is in it */
.pr-stats { list-style: none; padding: 0; margin: 8px 0 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.pr-stats li { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; display: grid; gap: 4px; align-content: start; font-size: .9rem; color: var(--muted); }
.pr-stats b { font-size: 1.45rem; color: var(--fg); line-height: 1.2; font-variant-numeric: tabular-nums; }
.pr-stats b small { font-size: .9rem; font-weight: 400; color: var(--muted); }
.pr-author { margin: 12px 0 0; font-weight: 600; }
/* PTEC */
.pr-ptec { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; }
.pr-ptec-price { font-size: 1.08rem; font-weight: 600; margin-bottom: 4px; }
.pr-ptec-teams { margin-top: 0; }
.pr-ptec p:last-child { margin-bottom: 0; }
/* the questions: all five answers in view (two columns on a wide screen) */
.pr-faq-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 28px; margin: 6px 0 0; }
.pr-faq-list > div { border-top: 1px solid var(--line); padding: 12px 0 4px; }
.pr-faq-list dt { font-weight: 700; margin-bottom: 4px; }
.pr-faq-list dd { margin: 0 0 8px; color: var(--muted); font-size: .95rem; }
.prices > .callout { margin-top: 28px; }
@media (max-width: 860px) {
  .pr-steps, .pr-stats { grid-template-columns: minmax(0, 1fr); }
  .pr-steps { gap: 10px; }
  .pr-step { grid-template-rows: none; }
  .pr-cards3 { grid-template-columns: minmax(0, 1fr); gap: 14px; padding-top: 18px; max-width: 480px; margin: 0 auto; }
  .pr-cards3 > .pr-card, .pr-cards2 > .pr-card { display: flex; grid-row: auto; }
  .pr-cards2 { gap: 14px; }
  .pr-faq-list { grid-template-columns: minmax(0, 1fr); }
  .pr-cards3 .pr-card.best { order: -1; transform: none; margin-bottom: 6px; }
  .pr-cards2 { grid-template-columns: minmax(0, 1fr); max-width: 480px; }
}
@media (max-width: 560px) {
  .pr-band { padding: 18px 16px 16px; border-radius: 12px; }
  .pr-band h1 { font-size: 1.6rem; }
  .pr-addon { grid-template-columns: minmax(0, 1fr); }
  .pr-addon .pr-act .btn { width: 100%; white-space: normal; }
  .pr-tabs button { padding: 8px 16px; }
}
/* paid plans (STEP3.md B2): the test checkout's note and a refusal on prices.html; the free preview's locks (core/gate.js);
   the progress page's plans and thanks */
.pr-test { background: var(--card); border: 1px dashed var(--line); border-radius: 10px; padding: 10px 14px; margin: 12px 0; font-size: .95rem; }
.pr-msg { display: block; margin-top: 6px; font-size: .9rem; color: var(--bad); font-weight: 600; text-align: center; }
.pr-msg:empty { display: none; }
.lessons button.is-locked { opacity: .72; }
.callout.lock a { font-weight: 600; }
.plans-mine ul { margin: 4px 0 10px; padding-left: 20px; }
#account-box { margin-bottom: 14px; }
.pr-addon-txt .pr-msg { text-align: left; }

/* ---- the study plan, v2 (28 Oct 2026): the hours by day of the week, the tests, the two bars, the ticks, the NCEES result ---- */
.plan-form.v2 { display: grid; gap: 10px; }
.plan-form.v2 > label { display: inline-flex; }
.week-head { font-weight: 600; margin: 6px 0 2px; }
.week { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 6px; max-width: 700px; }
.week .day { display: flex; flex-direction: column; align-items: center; gap: 4px; border: 1px solid var(--line); background: var(--card); border-radius: 10px; padding: 8px 4px 10px; font-weight: 600; cursor: pointer; }
.week .day.on { border-color: var(--accent); background: var(--soft); }
.week .day .c { font-size: .8rem; color: var(--muted); font-weight: 400; min-height: 1.2em; }
.week .day select { font-size: .9rem; padding: 4px 2px; max-width: 100%; }
@media (max-width: 560px) { .week { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.tests { display: grid; gap: 8px; margin: 2px 0 4px; }
.tests > label { display: flex; gap: 8px; align-items: center; font-weight: 600; flex-wrap: wrap; }
.tests label .muted { font-weight: 400; font-size: .92rem; }
.trow { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.trow .w { font-weight: 600; min-width: 120px; }
.trow input[type="date"], .plan-form.v2 input[type="date"] { font: inherit; padding: 6px 8px; border: 1px solid var(--line); border-radius: 6px; background: var(--card); color: var(--fg); }
.ncees-box { padding: 10px 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); max-width: 760px; display: grid; gap: 6px; }
.ncees-box > label { display: flex; gap: 8px; align-items: center; font-weight: 600; cursor: pointer; }
.small { font-size: .92rem; }
.bars-wrap { margin: 10px 0 6px; }
.bars { display: grid; grid-template-columns: 150px minmax(0, 1fr) 120px; gap: 8px 12px; align-items: center; max-width: 800px; margin: 0 0 8px; }
.bars .l, .bars .t { font-weight: 600; } .bars .t { white-space: nowrap; }
.bar { display: flex; height: 22px; border-radius: 999px; overflow: hidden; background: var(--soft); }
.sg-have { background: var(--good); } .fit-tight .sg-have { background: var(--warn); } .fit-short .sg-have { background: var(--bad); }
.sg-test { background: var(--vapor); } .sg-first { background: var(--muted); } .sg-review { background: var(--solid); }
.legend { display: flex; gap: 6px 18px; flex-wrap: wrap; font-size: .88rem; color: var(--muted); margin: 2px 0 8px; max-width: 800px; }
.legend .sw { display: inline-block; width: 12px; height: 12px; border-radius: 3px; vertical-align: -1px; margin-right: 6px; }
.verdict { margin: 6px 0 2px; } .fit-fine .verdict { color: var(--good); } .fit-tight .verdict { color: var(--warn); } .fit-short .verdict { color: var(--bad); }
.ahead { color: var(--good); font-weight: 600; }
@media (max-width: 560px) { .bars { grid-template-columns: 84px minmax(0, 1fr) 84px; font-size: .88rem; } }
.pd-items.ticks { list-style: none; padding-left: 0; }
.pd-items.ticks li { display: flex; gap: 10px; align-items: flex-start; }
.pd-items.ticks .tick { margin-top: 5px; width: 16px; height: 16px; flex: none; }
.pd-items.ticks li.is-done .pi-text { color: var(--muted); text-decoration: line-through; }
.tag { display: inline-block; font-size: .78rem; font-weight: 700; padding: 1px 8px; border-radius: 999px; margin-left: 6px; white-space: nowrap; vertical-align: 1px; }
.tag.late { color: var(--bad); background: var(--bad-soft); }
.pd-min.over { color: var(--bad); }
.plan-day.k-ncees { border-left: 4px solid var(--solid); }
.plan-day.k-off { background: var(--soft); color: var(--muted); }
.plan-day.is-past { opacity: .85; }
.ncees-result { margin-top: 22px; }
table.res input { width: 64px; font: inherit; padding: 4px 6px; border: 1px solid var(--line); border-radius: 6px; background: var(--card); color: var(--fg); }
.tag.auto { color: var(--muted); background: var(--soft); font-weight: 600; }
.pd-items li.is-done .pi-text { color: var(--muted); text-decoration: line-through; }

/* the exam chooser on the exam-prep landing (Jeff, 4 Nov 2026): two menus, FE and PE, each with none, and Go */
.chooser { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; margin: 8px 0 22px; }
.chooser label { display: flex; gap: 8px; align-items: center; font-weight: 600; }
.chooser select { font: inherit; padding: 7px 10px; min-width: 220px; max-width: 100%; }
.chooser .muted { flex-basis: 100%; font-size: .95rem; }
@media (max-width: 560px) { .chooser label { flex-basis: 100%; } .chooser select { flex: 1 1 0; width: 0; min-width: 0; } }   /* a long option never widens the page */