/* MathLab SAT Math Course (Nov 2026). Uses the site's theme tokens, so it follows
   the navy dark theme and the Chalk light theme. */
html.ml-course-on #app { display: none !important; }
.mlc { --mlc-surface: var(--surface, #16233a); --mlc-line: var(--line, #26385a); --mlc-ink: var(--ink, #e8eefb);
  --mlc-muted: var(--muted, #9fb0cf); --mlc-teal: var(--green, #3DD3C4); --mlc-lime: var(--lime, #C6F432);
  --mlc-warn: #ffc36b; --mlc-bad: #ff7a85; color: var(--mlc-ink); font-family: var(--ml-body, "DM Sans", system-ui, sans-serif); }
.mlc[hidden] { display: none !important; }
.mlc-wrap { max-width: 980px; margin: 0 auto; padding-block: 20px 56px; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); display: grid; gap: 20px; }
.mlc-crumbs { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: 14px; color: var(--mlc-muted); }
.mlc-crumbs a { color: var(--mlc-teal); text-decoration: none; }
.mlc-crumbs a:hover { text-decoration: underline; }
.mlc-crumbs b { font-weight: 400; opacity: .5; }
.mlc-eyebrow { font: 600 12px/1.2 var(--ml-mono, "IBM Plex Mono", monospace); letter-spacing: .08em; text-transform: uppercase; color: var(--mlc-teal); }
.mlc h1, .mlc h2 { font-family: var(--ml-display, "Bricolage Grotesque", system-ui, sans-serif); margin: 0; text-wrap: balance; color: var(--mlc-ink); }
.mlc h1 { font-size: clamp(32px, 6vw, 48px); line-height: 1.05; }
.mlc h2 { font-size: clamp(20px, 3.4vw, 26px); line-height: 1.2; }
.mlc p { margin: 0; line-height: 1.6; color: var(--mlc-muted); max-width: 65ch; }
.mlc p b { color: var(--mlc-ink); }
.mlc-hero { display: grid !important; gap: 12px; }
.mlc-hero.small h1 { font-size: clamp(28px, 5vw, 40px); }
.mlc-switch a, .mlc-foot a { color: var(--mlc-teal); }
.mlc-legend { display: flex; flex-wrap: wrap; gap: 8px; }
.mlc-tracks { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.mlc-track { display: grid; gap: 10px; align-content: start; padding: 22px; border-radius: 16px; border: 1px solid var(--mlc-line); background: var(--mlc-surface); color: inherit; text-decoration: none; transition: border-color .15s, transform .15s; min-width: 0; }
.mlc-track:hover, .mlc-track:focus-visible { border-color: var(--mlc-teal); transform: translateY(-2px); }
.mlc-track.mlc-t3 { border-color: color-mix(in srgb, var(--mlc-lime) 45%, var(--mlc-line)); }
.mlc-units { display: grid; gap: 4px; }
.mlc-units em { font-style: normal; font-size: 13px; color: var(--mlc-muted); font-variant-numeric: tabular-nums; }
.mlc-meta { display: flex; align-items: center; gap: 10px; font-variant-numeric: tabular-nums; }
.mlc-meta b { font: 600 14px var(--ml-mono, monospace); color: var(--mlc-ink); min-width: 4ch; text-align: right; }
.mlc-bar { flex: 1; min-width: 80px; height: 8px; border-radius: 99px; background: color-mix(in srgb, var(--mlc-line) 70%, transparent); overflow: hidden; display: block; }
.mlc-bar i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--mlc-teal), var(--mlc-lime)); }
.mlc-chip { display: inline-flex; align-items: center; padding: 3px 9px; border-radius: 99px; font: 600 12px/1.3 var(--ml-body, sans-serif); border: 1px solid var(--mlc-line); color: var(--mlc-muted); white-space: nowrap; }
.mlc-chip.mlc-l1 { color: var(--mlc-warn); border-color: color-mix(in srgb, var(--mlc-warn) 50%, transparent); }
.mlc-chip.mlc-l2 { color: var(--mlc-teal); border-color: color-mix(in srgb, var(--mlc-teal) 55%, transparent); }
.mlc-chip.mlc-l3 { color: var(--mlc-ink); background: color-mix(in srgb, var(--mlc-teal) 25%, transparent); border-color: var(--mlc-teal); }
.mlc-chip.mlc-l4 { color: #0b1425; background: var(--mlc-lime); border-color: var(--mlc-lime); }
.mlc-unit { display: grid; gap: 14px; padding: 20px; border-radius: 16px; border: 1px solid var(--mlc-line); background: var(--mlc-surface); min-width: 0; }
.mlc-unit-head { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; justify-content: space-between; }
.mlc-unit-head > div { display: grid; gap: 4px; }
.mlc-unit-head .mlc-meta { flex: 0 1 260px; }
.mlc-topics { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.mlc-topics a { display: grid; grid-template-columns: 14px 1fr auto; gap: 12px; align-items: center; padding: 12px 14px; border-radius: 10px; border: 1px solid transparent; color: var(--mlc-ink); text-decoration: none; background: color-mix(in srgb, var(--mlc-line) 25%, transparent); }
.mlc-topics a:hover, .mlc-topics a:focus-visible { border-color: var(--mlc-teal); }
.mlc-tt { min-width: 0; line-height: 1.35; }
.mlc-dot { width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--mlc-line); }
.mlc-dot.mlc-l1 { border-color: var(--mlc-warn); }
.mlc-dot.mlc-l2 { border-color: var(--mlc-teal); background: color-mix(in srgb, var(--mlc-teal) 30%, transparent); }
.mlc-dot.mlc-l3 { border-color: var(--mlc-teal); background: var(--mlc-teal); }
.mlc-dot.mlc-l4 { border-color: var(--mlc-lime); background: var(--mlc-lime); }
.mlc-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 18px; border-radius: 10px; border: 1px solid transparent; font: 600 16px var(--ml-body, sans-serif); cursor: pointer; text-decoration: none; justify-self: start; }
.mlc-btn.lime { background: var(--mlc-lime); color: #0b1425; }
.mlc-btn.ghost { background: transparent; color: var(--mlc-ink); border-color: var(--mlc-line); }
.mlc-btn:focus-visible, .mlc-choice:focus-visible, .mlc-link:focus-visible { outline: 3px solid var(--mlc-teal); outline-offset: 2px; }
.mlc-link { background: none; border: 0; padding: 0; color: var(--mlc-teal); font: 600 15px var(--ml-body, sans-serif); cursor: pointer; text-decoration: underline; justify-self: start; }
.mlc-note { font-size: 15px; }
.mlc-note .mlc-btn { margin-left: 8px; padding: 6px 12px; font-size: 14px; }
.mlc-entry { display: inline-flex; flex-direction: column; gap: 2px; padding: 11px 18px; border-radius: 10px; border: 1px solid var(--lime, #C6F432); color: var(--ink, #e8eefb); text-decoration: none; font: 600 16px var(--ml-body, sans-serif); margin: 10px 0 0; }
.mlc-entry small { font: 500 12px var(--ml-body, sans-serif); color: var(--muted, #9fb0cf); }
.mlc-qhead { display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; align-items: center; }
.mlc-steps { display: flex; gap: 5px; flex-wrap: wrap; }
.mlc-steps i { width: 22px; height: 6px; border-radius: 99px; background: var(--mlc-line); }
.mlc-steps i.now { background: var(--mlc-ink); }
.mlc-steps i.ok { background: var(--mlc-teal); }
.mlc-steps i.no { background: var(--mlc-warn); }
.mlc-q, .mlc-done { display: grid; gap: 16px; padding: 22px; border-radius: 16px; border: 1px solid var(--mlc-line); background: var(--mlc-surface); min-width: 0; }
.mlc-stem { font-size: 18px; line-height: 1.6; overflow-x: auto; }
.mlc-stem table { border-collapse: collapse; margin: 10px 0; }
.mlc-stem th, .mlc-stem td { border: 1px solid var(--mlc-line); padding: 6px 12px; text-align: center; }
.mlc-choices { display: grid; gap: 8px; }
.mlc-choice { display: grid; grid-template-columns: 30px 1fr; gap: 10px; align-items: center; text-align: left; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--mlc-line); background: transparent; color: var(--mlc-ink); font: 400 17px/1.45 var(--ml-body, sans-serif); cursor: pointer; min-width: 0; }
.mlc-choice b { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--mlc-line); font: 600 14px var(--ml-mono, monospace); }
.mlc-choice:hover:not(:disabled) { border-color: var(--mlc-teal); }
.mlc-choice.picked { border-color: var(--mlc-teal); background: color-mix(in srgb, var(--mlc-teal) 14%, transparent); }
.mlc-choice.picked b { background: var(--mlc-teal); color: #0b1425; border-color: var(--mlc-teal); }
.mlc-choice.right { border-color: var(--mlc-teal); background: color-mix(in srgb, var(--mlc-teal) 18%, transparent); }
.mlc-choice.wrong { border-color: var(--mlc-bad); background: color-mix(in srgb, var(--mlc-bad) 12%, transparent); }
.mlc-choice:disabled { cursor: default; }
.mlc-spr { font-weight: 600; }
.mlc-spr small { font-weight: 400; color: var(--mlc-muted); }
.mlc-input { width: min(260px, 100%); padding: 12px 14px; border-radius: 10px; border: 1px solid var(--mlc-line); background: transparent; color: var(--mlc-ink); font: 500 18px var(--ml-mono, monospace); }
.mlc-input:focus { outline: 3px solid var(--mlc-teal); outline-offset: 1px; }
.mlc-help { display: grid; gap: 8px; padding: 14px; border-radius: 12px; border: 1px dashed var(--mlc-teal); }
.mlc-feedback { display: grid; gap: 8px; padding: 14px; border-radius: 12px; border-left: 4px solid var(--mlc-teal); background: color-mix(in srgb, var(--mlc-teal) 10%, transparent); line-height: 1.6; }
.mlc-feedback.no { border-left-color: var(--mlc-warn); background: color-mix(in srgb, var(--mlc-warn) 10%, transparent); }
.mlc-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.mlc-moves { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.mlc-moves li { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 10px 12px; border-radius: 10px; background: color-mix(in srgb, var(--mlc-line) 25%, transparent); }
.mlc-moves li > span { flex: 1 1 220px; min-width: 0; }
.mlc-moves small { color: var(--mlc-muted); margin-left: 6px; font-variant-numeric: tabular-nums; }
.mlc-loading { color: var(--mlc-muted); }
.mlc-shake { animation: mlc-shake .35s; }
@keyframes mlc-shake { 25% { transform: translateX(-4px); } 75% { transform: translateX(4px); } }
@media (prefers-reduced-motion: reduce) { .mlc-track, .mlc-shake { transition: none; animation: none; } }
@media print { .mlc-entry { display: none !important; } }
.mlc-challenge { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; padding: 20px 22px; border-radius: 16px; border: 1px dashed var(--mlc-lime); background: color-mix(in srgb, var(--mlc-lime) 6%, var(--mlc-surface)); }
.mlc-challenge > div { display: grid; gap: 6px; flex: 1 1 320px; min-width: 0; }
.mlc-done h3 { font-family: var(--ml-display, "Bricolage Grotesque", system-ui, sans-serif); margin: 6px 0 0; font-size: 18px; color: var(--mlc-ink); }
.mlc-moves a.mlc-chip { text-decoration: none; }
.mlc-hints { display: grid; gap: 8px; }
.mlc-hint { display: grid; gap: 4px; padding: 12px 14px; border-radius: 10px; border-left: 3px solid var(--mlc-lime); background: color-mix(in srgb, var(--mlc-lime) 7%, transparent); line-height: 1.55; }
/* Figures in the course use the approved MathLab figure style (dark card, teal lines, lime points). */
#ml-course svg.sat-fig { display: block; width: 440px; max-width: 100%; height: auto; margin: 12px 0; box-sizing: border-box; background: #101e33 !important; color: #eef5ff !important; border: 1px solid #2c405b !important; border-radius: 10px !important; }
#ml-course svg.sat-fig :is(path, line, polyline, polygon, ellipse) { stroke: rgb(61, 211, 196) !important; }
#ml-course svg.sat-fig :is(path, polyline, polygon) { fill: none !important; }
#ml-course svg.sat-fig :is(.a, .axis) { stroke: #9fb3cf !important; }
#ml-course svg.sat-fig :is(.g, .major, .minor) { stroke: #2c405b !important; }
#ml-course svg.sat-fig :is(.f, .curve) { stroke: rgb(61, 211, 196) !important; stroke-width: 2.5; }
#ml-course svg.sat-fig :is(.p, .point) { fill: rgb(198, 244, 50) !important; stroke: none !important; }
#ml-course svg.sat-fig .hole { fill: #101e33 !important; stroke: rgb(198, 244, 50) !important; stroke-width: 2; }
#ml-course svg.sat-fig rect.bar { fill: rgb(61, 211, 196) !important; stroke: none !important; }
#ml-course svg.sat-fig text { fill: #eef5ff !important; font-family: KaTeX_Main, "STIX Two Text", Cambria, Georgia, serif !important; font-size: 13px; }
@media print { #ml-course svg.sat-fig { background: #fff !important; } #ml-course svg.sat-fig text { fill: #000 !important; } }