/* Scoped to the modeling assignment so the site chrome keeps its own type and color. */
.ms-problem.problem-card {
  max-width: none;
  overflow: visible;
}

.ms-problem.problem-card::before {
  border-radius: var(--radius) var(--radius) 0 0;
}

.ms-doc {
  --bg: #f6f5f1;
  --surface: #fcfcfb;
  --surface-2: #efede7;
  --border: #dcd9d0;
  --text: #191917;
  --text-2: #52514e;
  --muted: #7a7873;
  --accent: #2a6bb8;
  --accent-soft: #e3ecf7;
  --warn: #9a5b00;
  --warn-soft: #fbf0dc;
  --ok: #1f7a4a;
  --ok-soft: #e2f2e8;
  --s1: #2a78d6;
  --s2: #eb6834;
  --s3: #1baf7a;
  --s4: #eda100;
  --grid: #e7e4dc;
  --axis: #a9a69e;
  --mech-ring: #3b3a36;
  --mech-gear: #2a78d6;
  --mech-arm: #eb6834;
  color-scheme: light;
  margin-top: 28px;
  padding: 8px 18px 28px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 "IBM Plex Sans", system-ui, sans-serif;
  overflow-x: clip;
}

html[data-theme="dark"] .ms-doc {
  --bg: #121211;
  --surface: #1a1a19;
  --surface-2: #232321;
  --border: #34332f;
  --text: #f0efec;
  --text-2: #c3c2b7;
  --muted: #8f8d85;
  --accent: #6ea6ea;
  --accent-soft: #1d2a3a;
  --warn: #e0a54a;
  --warn-soft: #2c2416;
  --ok: #5fc48c;
  --ok-soft: #16281e;
  --s1: #3987e5;
  --s2: #d95926;
  --s3: #199e70;
  --s4: #c98500;
  --grid: #2a2a27;
  --axis: #5e5c56;
  --mech-ring: #c3c2b7;
  --mech-gear: #3987e5;
  --mech-arm: #d95926;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  html:not([data-theme="dark"]) .ms-doc {
    --bg: #f6f5f1;
    --surface: #fcfcfb;
    --surface-2: #efede7;
    --border: #dcd9d0;
    --text: #191917;
    --text-2: #52514e;
    --muted: #7a7873;
    --accent: #2a6bb8;
    --accent-soft: #e3ecf7;
    --warn: #9a5b00;
    --warn-soft: #fbf0dc;
    --ok: #1f7a4a;
    --ok-soft: #e2f2e8;
    --s1: #2a78d6;
    --s2: #eb6834;
    --s3: #1baf7a;
    --s4: #eda100;
    --grid: #e7e4dc;
    --axis: #a9a69e;
    --mech-ring: #3b3a36;
    --mech-gear: #2a78d6;
    --mech-arm: #eb6834;
  }
}

.ms-doc .wrap {
  max-width: none;
  margin: 0;
  padding: 0;
}

.ms-doc h2,
.ms-doc h3,
.ms-doc h4 {
  font-family: "Source Serif 4", Georgia, serif;
  font-weight: 650;
  line-height: 1.2;
  letter-spacing: -0.01em;
  text-transform: none;
  color: var(--text);
}

.ms-problem .ms-doc h2 {
  display: block;
  font-size: clamp(23px, 3.4vw, 30px);
  margin: 0 0 14px;
  color: var(--text);
}

.ms-problem .ms-doc h2::before {
  content: none;
}

.ms-doc h3 {
  font-size: 19px;
  margin: 28px 0 8px;
}

.ms-doc .lede {
  font-size: 18px;
  color: var(--text-2);
  max-width: 720px;
  margin: 18px 0 0;
}

.ms-doc .meta {
  margin: 14px 0 0;
  font-size: 13.5px;
  color: var(--muted);
}

.ms-doc nav.toc {
  position: sticky;
  top: 0;
  z-index: 5;
  margin: 22px -18px 0;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.ms-doc nav.toc .wrap {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  padding: 8px 18px;
  scrollbar-width: none;
}

.ms-doc nav.toc a {
  flex: none;
  font-size: 13.5px;
  color: var(--text-2);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 6px;
  white-space: nowrap;
}

.ms-doc nav.toc a:hover {
  background: var(--surface-2);
  color: var(--text);
}

.ms-doc section {
  padding: 48px 0;
  border-bottom: 1px solid var(--border);
}

.ms-doc section:last-of-type {
  border-bottom: 0;
}

.ms-doc .num {
  font: 500 13px "IBM Plex Mono", monospace;
  color: var(--accent);
  display: block;
  margin-bottom: 6px;
}

.ms-problem .ms-doc p {
  margin: 0 0 14px;
  color: var(--text);
}

.ms-doc a {
  color: var(--accent);
}

.ms-doc .card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.ms-doc .eq {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 16px;
  margin: 12px 0 16px;
  overflow-x: auto;
  position: relative;
}

.ms-doc .eq .tag {
  position: absolute;
  right: 12px;
  top: 8px;
  font: 12px "IBM Plex Mono", monospace;
  color: var(--muted);
}

.ms-doc .eq.key {
  border-color: var(--accent);
  box-shadow: inset 3px 0 0 var(--accent);
}

.ms-doc .grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

.ms-doc figure {
  margin: 0;
}

.ms-doc figcaption {
  font-size: 13.5px;
  color: var(--muted);
  margin-top: 8px;
  text-align: center;
}

.ms-doc .note {
  border-radius: 10px;
  padding: 14px 16px;
  margin: 16px 0;
  font-size: 15px;
}

.ms-doc .note.info {
  background: var(--accent-soft);
}

.ms-doc .note.warn {
  background: var(--warn-soft);
}

.ms-doc .note.ok {
  background: var(--ok-soft);
}

.ms-doc .note b.t {
  display: block;
  margin-bottom: 4px;
}

.ms-problem .ms-doc ul,
.ms-problem .ms-doc ol {
  padding-left: 22px;
  margin: 0 0 14px;
}

.ms-problem .ms-doc li {
  margin-bottom: 6px;
}

.ms-doc table.data {
  border-collapse: collapse;
  width: 100%;
  font-size: 14.5px;
}

.ms-doc table.data th,
.ms-doc table.data td {
  border-bottom: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
}

.ms-doc table.data th {
  color: var(--text-2);
  font-weight: 500;
}

.ms-doc .mono {
  font-family: "IBM Plex Mono", monospace;
}

.ms-doc .cases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.ms-doc .case {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin: 0;
}

.ms-doc .case h3 {
  margin-top: 0;
}

.ms-doc .case .btn {
  margin-top: 6px;
}

.ms-doc .btn {
  font: 500 14px "IBM Plex Sans", sans-serif;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 7px 14px;
  border-radius: 8px;
  cursor: pointer;
}

.ms-doc .btn:hover {
  border-color: var(--accent);
}

.ms-doc .btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.ms-doc .btn.primary:hover {
  filter: brightness(1.07);
}

.ms-doc .err {
  counter-increment: err;
  position: relative;
  padding-left: 40px;
  margin-bottom: 22px;
}

.ms-doc .err::before {
  content: counter(err);
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--warn-soft);
  color: var(--warn);
  font: 600 14px/28px "IBM Plex Mono", monospace;
  text-align: center;
}

.ms-doc .errs {
  counter-reset: err;
}

.ms-doc .sim {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ms-doc .sim > div:first-child {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: stretch;
}

.ms-doc .sim > div:first-child > .panel {
  flex: 1 1 220px;
  margin-top: 0;
}

.ms-doc .sim > div:last-child {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  align-items: start;
}

.ms-doc .sim > div:last-child > .stats,
.ms-doc .sim > div:last-child > details,
.ms-doc .sim > div:last-child > .charts2 {
  grid-column: 1 / -1;
}

.ms-doc .sim > div:last-child > .chartbox:has(canvas:not(.chart)),
.ms-doc .sim > div:last-child > .chartbox:has(table) {
  grid-column: 1 / -1;
}

.ms-doc .sim > div:last-child > .chartbox.full,
.ms-doc .sim > div:last-child > #warn {
  grid-column: 1 / -1;
}

.ms-doc #warn:empty {
  display: none;
}

.ms-doc .sim > *,
.ms-doc .sim > div:last-child > * {
  min-width: 0;
}

.ms-doc canvas {
  min-width: 0;
  max-width: 100%;
}

.ms-doc .panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}

.ms-problem .ms-doc .panel h4 {
  margin: 0 0 10px;
  font: 600 12px/1 "IBM Plex Mono", monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.ms-doc .panel + .panel {
  margin-top: 14px;
}

.ms-doc .field {
  display: grid;
  grid-template-columns: 1fr 120px;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 14px;
}

.ms-doc .field label {
  color: var(--text-2);
}

.ms-doc .field input,
.ms-doc .field select,
.ms-doc select.btn {
  width: 100%;
  font: 14px "IBM Plex Mono", monospace;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
}

.ms-doc .field input:focus,
.ms-doc .field select:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

.ms-doc .chk {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 14px;
  color: var(--text-2);
  margin: 6px 0;
}

.ms-doc .presets {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.ms-doc .presets .btn {
  font-size: 13px;
  padding: 5px 10px;
}

.ms-doc .stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}

.ms-doc .stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}

.ms-doc .stat .k {
  font-size: 12px;
  color: var(--muted);
}

.ms-doc .stat .v {
  font: 500 18px "IBM Plex Mono", monospace;
  margin-top: 2px;
}

.ms-doc .stat .s {
  font-size: 12px;
  color: var(--text-2);
}

.ms-doc .chartbox {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 12px 6px;
  margin-bottom: 0;
  position: relative;
}

.ms-doc .chartbox .ct {
  font-size: 14px;
  font-weight: 600;
  margin: 0 4px 2px;
}

.ms-doc .chartbox .cs {
  font-size: 12.5px;
  color: var(--muted);
  margin: 0 4px 6px;
}

.ms-doc .legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 12.5px;
  color: var(--text-2);
  margin: 0 4px 6px;
}

.ms-doc .legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.ms-doc .legend i {
  display: inline-block;
  width: 14px;
  height: 3px;
  border-radius: 2px;
}

.ms-doc .legend i.dash {
  background: repeating-linear-gradient(90deg, currentColor 0 4px, transparent 4px 7px) !important;
  height: 2px;
}

.ms-doc canvas.chart {
  width: 100%;
  height: 260px;
  display: block;
}

.ms-doc canvas.chart.small {
  height: 150px;
}

.ms-doc .charts2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.ms-doc .tip {
  position: fixed;
  pointer-events: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 9px;
  font: 12px/1.45 "IBM Plex Mono", monospace;
  color: var(--text);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
  display: none;
  white-space: nowrap;
  z-index: 30;
}

.ms-doc .mechwrap {
  display: grid;
  grid-template-columns: auto minmax(220px, 1fr);
  gap: 8px 20px;
  align-items: center;
}

.ms-doc canvas#mech {
  width: auto;
  height: 420px;
  aspect-ratio: 1 / 1;
  display: block;
  margin: 0;
}

.ms-doc canvas#mech2 {
  width: 100%;
  height: 300px;
  display: block;
}

.ms-doc canvas#mech3,
.ms-doc canvas#mech4 {
  width: auto;
  height: 460px;
  aspect-ratio: 3 / 4;
  display: block;
  margin: 0;
}

.ms-doc canvas#mech5 {
  width: auto;
  height: 360px;
  aspect-ratio: 4 / 3;
  display: block;
  margin: 0;
}

.ms-doc canvas#mech6 {
  width: 100%;
  aspect-ratio: 760 / 205;
  display: block;
}

.ms-doc canvas#mech7 {
  width: 100%;
  aspect-ratio: 440 / 236;
  display: block;
}

.ms-doc canvas#mech8 {
  width: auto;
  height: 420px;
  aspect-ratio: 400 / 420;
  display: block;
  margin: 0;
}

.ms-doc canvas#mech9 {
  width: auto;
  height: 460px;
  aspect-ratio: 3 / 4;
  display: block;
  margin: 0;
}

.ms-doc canvas#mech10 {
  width: 100%;
  aspect-ratio: 760 / 300;
  display: block;
}

.ms-doc canvas#mech12 {
  width: auto;
  height: 420px;
  aspect-ratio: 1 / 1;
  display: block;
  margin: 0;
}

.ms-doc .chartbox:has(canvas#mech14) .mechwrap {
  grid-template-columns: minmax(0, 1fr) minmax(200px, 240px);
}

.ms-doc canvas#mech14 {
  width: 100%;
  height: 220px;
  display: block;
}

.ms-doc canvas#mech16 {
  width: auto;
  height: 420px;
  aspect-ratio: 1 / 1;
  display: block;
  margin: 0;
}

.ms-doc canvas#mech18 {
  width: auto;
  height: 460px;
  aspect-ratio: 4 / 5;
  display: block;
  margin: 0;
}

.ms-doc canvas#mech20 {
  width: auto;
  height: 420px;
  aspect-ratio: 1 / 1;
  display: block;
  margin: 0;
}

.ms-doc canvas#mech25 {
  width: auto;
  height: 340px;
  aspect-ratio: 4 / 3;
  display: block;
  margin: 0;
}

.ms-doc canvas#mech26 {
  width: auto;
  height: 340px;
  aspect-ratio: 22 / 15;
  display: block;
  margin: 0;
}

.ms-doc canvas#mech27 {
  width: auto;
  height: 300px;
  aspect-ratio: 22 / 13;
  display: block;
  margin: 0;
}

.ms-doc canvas#mech28,
.ms-doc canvas#mech29 {
  width: auto;
  height: 280px;
  aspect-ratio: 46 / 25;
  display: block;
  margin: 0;
}

.ms-doc canvas#mech30 {
  width: auto;
  height: 340px;
  aspect-ratio: 46 / 32;
  display: block;
  margin: 0;
}

.ms-doc .playbar select.btn {
  width: auto;
  padding: 7px 8px;
}

.ms-doc .playbar {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 8px;
}

.ms-doc .playbar input[type="range"] {
  flex: 1;
  accent-color: var(--accent);
}

.ms-doc .readout {
  font: 13px/1.8 "IBM Plex Mono", monospace;
  color: var(--text-2);
  overflow-wrap: anywhere;
}

.ms-doc .readout b {
  color: var(--text);
  font-weight: 500;
}

.ms-doc details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 10px;
}

.ms-doc details summary {
  cursor: pointer;
  font-weight: 500;
}

.ms-doc details[open] summary {
  margin-bottom: 8px;
}

.ms-doc .datatable {
  max-height: 260px;
  overflow: auto;
  margin-top: 8px;
}

.ms-doc .svgfig text {
  font-family: "IBM Plex Sans", sans-serif;
}

.ms-doc .credit {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 860px) {
  .ms-doc .sim > div:last-child,
  .ms-doc .charts2 {
    grid-template-columns: 1fr;
  }

  .ms-doc .mechwrap,
  .ms-doc .chartbox:has(canvas#mech14) .mechwrap {
    grid-template-columns: 1fr;
  }

  .ms-doc canvas#mech,
  .ms-doc canvas#mech3,
  .ms-doc canvas#mech4,
  .ms-doc canvas#mech5,
  .ms-doc canvas#mech8,
  .ms-doc canvas#mech9,
  .ms-doc canvas#mech12,
  .ms-doc canvas#mech16,
  .ms-doc canvas#mech18,
  .ms-doc canvas#mech20,
  .ms-doc canvas#mech25,
  .ms-doc canvas#mech26,
  .ms-doc canvas#mech27,
  .ms-doc canvas#mech28,
  .ms-doc canvas#mech29,
  .ms-doc canvas#mech30 {
    width: 100%;
    height: auto;
    max-height: none;
    margin: 0 auto;
  }
}

@media (max-width: 760px) {
  .ms-doc .grid2,
  .ms-doc .cases,
  .ms-doc .charts2 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 800px) {
  .ms-doc .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .ms-doc canvas#mech2 {
    height: 220px;
  }
}