/* Math Fluency Lab — student app design system. Tokens first; every component reads them. */
:root {
  --navy: #14284b;
  --ink: #17233a;
  --ink-2: #4a5873;
  --blue: #1f5fbf;
  --blue-ink: #174a96;
  --teal: #0f7a74;
  --warm: #b4541b;
  --paper: #f7f5f0;
  --surface: #ffffff;
  --line: #dfe3ea;
  --line-2: #c4ccd8;
  --right: #146c43;
  --right-bg: #e8f5ee;
  --wrong: #a3401f;
  --wrong-bg: #fdf0ea;
  /* Mathematical colour language: first quantity, second quantity, result/emphasis. Never colour alone. */
  --q1: #c2410c;
  --q2: #1d4ed8;
  --q3: #0f766e;
  --r-sm: 8px;
  --r: 14px;
  --r-lg: 20px;
  --s1: 4px;
  --s2: 8px;
  --s3: 12px;
  --s4: 16px;
  --s5: 24px;
  --s6: 32px;
  --s7: 48px;
  --shadow: 0 1px 2px rgb(20 40 75 / 6%), 0 8px 24px rgb(20 40 75 / 6%);
  --font: "Lexend", system-ui, sans-serif;
  --font-display: "Fraunces", Georgia, serif;
  --fs: 1rem;
  --fs-lead: 1.2rem;
  --fs-problem: clamp(1.6rem, 4.5vw, 2.4rem);
  --fs-h1: clamp(1.6rem, 4vw, 2.4rem);
  color-scheme: light;
  /* The studio engines (studio/studio.css, studio/core.js COLORS) read these: one palette, one ink, one rule line,
     so a Build panel or worked-example frame looks like the rest of the app. Quantity colours are shared:
     --q2 = COLORS.whole/tens (#1d4ed8), --q3 = COLORS.part/ones (#0f766e). */
  --pub-navy: var(--navy);
  --pub-rule: var(--line-2);
  --pub-teal: var(--teal);
  --pub-teal-ink: var(--teal);
  --pub-teal-tint: #e6f4f2;
  --pub-coral-ink: var(--wrong);
  --pub-amber-ink: #7a5200;
  --pub-amber-tint: #fdf3d8;
  --pub-sans: var(--font);
}
html[data-band="k2"] {
  --fs: 1.12rem;
  --fs-lead: 1.3rem;
}
html[data-large="1"] {
  font-size: 118%;
}
html[data-reading-font="1"] {
  --font: "Atkinson Hyperlegible", "Lexend", system-ui, sans-serif;
  --font-display: "Atkinson Hyperlegible", "Lexend", system-ui, sans-serif;
  letter-spacing: 0.01em;
}
html[data-reading-font="1"] body {
  line-height: 1.7;
}
html[data-motion="reduce"] *,
html[data-motion="reduce"] *::before,
html[data-motion="reduce"] *::after {
  animation: none !important;
  transition: none !important;
  scroll-behavior: auto !important;
}
* {
  box-sizing: border-box;
}
/* Headings take focus only so screen readers land on them after a screen change; they are not controls. */
h1[tabindex="-1"]:focus {
  outline: none;
}
/* `hidden` always wins: a component's display rule must never resurrect a control the app has removed. */
[hidden] {
  display: none !important;
}
body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--fs);
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
}
h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0 0 var(--s3);
}
h1 {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  font-weight: 600;
  color: var(--navy);
}
h2 {
  font-size: 1.15rem;
}
a {
  color: var(--blue-ink);
}
:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
  border-radius: 4px;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--surface);
  padding: var(--s3);
  z-index: 10;
}
.skip-link:focus {
  left: var(--s3);
}
main {
  max-width: 1040px;
  margin: 0 auto;
  padding: var(--s5) var(--s4) var(--s7);
  outline: none;
}

/* Top bar: brand, three destinations, two quiet utilities. */
.topbar {
  display: flex;
  align-items: center;
  gap: var(--s4);
  padding: var(--s3) var(--s4);
  background: var(--navy);
  color: #fff;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  min-height: 44px;
  gap: var(--s2);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: #fff;
  color: var(--navy);
  font-weight: 700;
}
.nav {
  display: flex;
  gap: var(--s1);
  flex: 1;
  flex-wrap: wrap;
}
.nav-link {
  color: #dbe4f3;
  text-decoration: none;
  padding: var(--s2) var(--s3);
  border-radius: 999px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.nav-link[aria-current="page"] {
  background: rgb(255 255 255 / 14%);
  color: #fff;
  font-weight: 600;
}
.topbar-end {
  display: flex;
  gap: var(--s2);
}
.topbar .btn-quiet {
  color: #fff;
  border-color: rgb(255 255 255 / 35%);
  background: transparent;
}

/* Buttons: one primary per screen; secondary outlined; quiet for utilities. */
.btn {
  font: inherit;
  min-height: 44px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s2);
  text-decoration: none;
}
.btn:disabled {
  opacity: 0.45;
  cursor: default;
}
.btn-primary {
  background: var(--blue);
  color: #fff;
  font-weight: 600;
}
.btn-primary:hover:not(:disabled) {
  background: var(--blue-ink);
}
.btn-secondary {
  background: var(--surface);
  color: var(--blue-ink);
  border-color: var(--blue);
}
.btn-quiet {
  background: transparent;
  color: var(--ink-2);
  border-color: var(--line-2);
}
.btn-link,
.btn.btn-link {
  background: none;
  border: 0;
  color: var(--blue-ink);
  text-decoration: underline;
  padding: 0 var(--s2);
  min-height: 44px;
  font: inherit;
  cursor: pointer;
}
.btn-sm {
  min-height: 44px;
  padding: 6px 14px;
  font-size: 0.92rem;
}
.btn-lg {
  padding: 14px 28px;
  font-size: 1.1rem;
}
.btn-icon {
  width: 44px;
  padding: 0;
  background: transparent;
  border-color: var(--line-2);
}
.btn-choice {
  background: var(--surface);
  border-color: var(--line-2);
  color: var(--ink);
  border-radius: var(--r-sm);
}
.btn-choice[aria-pressed="true"],
.btn-choice.is-right {
  border-color: var(--right);
  background: var(--right-bg);
}
.btn-choice.is-wrong {
  border-color: var(--wrong);
  background: var(--wrong-bg);
}
.actions {
  display: flex;
  gap: var(--s3);
  flex-wrap: wrap;
  align-items: center;
  margin-top: var(--s5);
}
.actions-quiet {
  margin-top: var(--s4);
}

/* Home */
.hero {
  text-align: left;
}
.hero-sub,
.eyebrow {
  color: var(--ink-2);
  margin: 0 0 var(--s3);
}
.eyebrow {
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.grade-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(104px, 1fr));
  gap: var(--s3);
  margin-top: var(--s4);
}
.grade-btn {
  font: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--s4) var(--s2);
  border-radius: var(--r);
  border: 1.5px solid var(--line-2);
  background: var(--surface);
  cursor: pointer;
  min-height: 96px;
  color: var(--ink);
}
.grade-btn:hover {
  border-color: var(--blue);
}
.grade-btn[aria-pressed="true"] {
  border-color: var(--blue);
  background: #eaf1fc;
}
.grade-num {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--navy);
  font-weight: 600;
}
.grade-label {
  font-size: 0.85rem;
  color: var(--ink-2);
}
.grade-grid.is-compact {
  grid-template-columns: repeat(9, minmax(44px, 1fr));
  gap: var(--s1);
  margin: 0;
}
.grade-grid.is-compact .grade-btn {
  min-height: 44px;
  padding: var(--s1);
}
.grade-grid.is-compact .grade-num {
  font-size: 1.1rem;
}
.grade-grid.is-compact .grade-label {
  display: none;
}
.feature {
  margin-top: var(--s5);
  background: var(--surface);
  border-radius: var(--r-lg);
  padding: var(--s6);
  box-shadow: var(--shadow);
  border-left: 6px solid var(--teal);
}
.feature-kicker {
  color: var(--teal);
  font-weight: 600;
  margin: 0 0 var(--s2);
}
.feature-title {
  font-size: 1.5rem;
  color: var(--navy);
}
.feature-text {
  color: var(--ink-2);
  max-width: 60ch;
}
.quiet-progress {
  margin-top: var(--s5);
  color: var(--ink-2);
  font-size: 0.95rem;
}

/* Library */
.library-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s4);
  flex-wrap: wrap;
}
.search input {
  width: 100%;
  font: inherit;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1.5px solid var(--line-2);
  margin: var(--s4) 0;
  min-height: 48px;
  background: var(--surface);
}
.strand {
  margin-top: var(--s5);
}
.strand h2 {
  color: var(--navy);
  border-bottom: 1px solid var(--line);
  padding-bottom: var(--s2);
}
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--s4);
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: var(--s4);
  display: flex;
  flex-direction: column;
  gap: var(--s2);
}
.card h3 {
  font-size: 1.05rem;
  margin: 0;
}
.card p {
  margin: 0;
  color: var(--ink-2);
  font-size: 0.95rem;
  flex: 1;
}
.card .btn {
  align-self: flex-start;
}
.empty {
  color: var(--ink-2);
}

/* Skill screen */
.skill-head {
  margin-bottom: var(--s4);
}
.stepper {
  list-style: none;
  display: flex;
  gap: var(--s2);
  padding: 0;
  margin: var(--s3) 0 0;
  flex-wrap: wrap;
  counter-reset: st;
}
.stepper li {
  counter-increment: st;
}
.stepper-btn {
  font: inherit;
  font-size: 0.92rem;
  border: 1.5px solid var(--line-2);
  background: var(--surface);
  color: var(--ink-2);
  border-radius: 999px;
  padding: 6px 14px;
  min-height: 44px;
  cursor: pointer;
}
.stepper-btn::before {
  content: counter(st) ". ";
}
.stepper li.is-on .stepper-btn {
  border-color: var(--navy);
  background: var(--navy);
  color: #fff;
}
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: var(--s5);
  margin-top: var(--s4);
}
.panel-lead {
  border-left: 6px solid var(--teal);
}
.panel-kicker {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--teal);
  margin-bottom: var(--s2);
}
.lead {
  font-size: var(--fs-lead);
  margin: 0;
  max-width: 62ch;
}
.problem-line {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--navy);
}
.reasons {
  margin: var(--s4) 0 0;
  padding-left: 1.2em;
}
.watch {
  margin-top: var(--s4);
  padding: var(--s4);
  border-radius: var(--r);
  background: #fff7ed;
  border-left: 5px solid var(--warm);
}

/* Explanation canvas */
.cv-stage {
  background: #fbfcfe;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: var(--s3);
  overflow-x: auto;
}
.cv-stage svg {
  width: 100%;
  height: auto;
  max-height: 320px;
  display: block;
}
.cv-animate svg {
  animation: cv-in 0.28s ease-out;
}
@keyframes cv-in {
  from {
    opacity: 0.2;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
.cv-eq {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--navy);
  margin: var(--s3) 0 var(--s1);
  min-height: 1.4em;
  font-variant-numeric: tabular-nums;
}
.cv-cap {
  margin: 0;
  max-width: 64ch;
}
.cv-nav {
  display: flex;
  align-items: center;
  gap: var(--s3);
  margin-top: var(--s4);
  flex-wrap: wrap;
}
.cv-count {
  color: var(--ink-2);
  font-size: 0.9rem;
  flex: 1;
  text-align: center;
}
.cv-predict {
  margin-top: var(--s4);
  padding: var(--s4);
  border-radius: var(--r);
  background: #eef4fd;
}
.cv-choices {
  display: flex;
  gap: var(--s2);
  flex-wrap: wrap;
}
.cv-strip {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--s3);
}
.model-fallback table {
  border-collapse: collapse;
}
.model-fallback td,
.model-fallback th {
  border: 1px solid var(--line-2);
  padding: 6px 12px;
}
.model-fallback svg {
  max-width: 100%;
  height: auto;
}

/* Practice */
.practice-meta {
  color: var(--ink-2);
  font-size: 0.9rem;
  margin: 0 0 var(--s3);
}
.problem {
  font-size: var(--fs-problem);
  font-weight: 600;
  color: var(--navy);
  margin: 0 0 var(--s4);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.answer-row {
  display: flex;
  gap: var(--s3);
  align-items: center;
  flex-wrap: wrap;
}
.answer-row label:not(.sr-only) {
  width: 100%;
}
.answer {
  font: inherit;
  font-size: 1.4rem;
  padding: 10px 14px;
  border-radius: var(--r-sm);
  border: 2px solid var(--line-2);
  min-height: 52px;
  width: min(260px, 100%);
}
.answer:focus {
  border-color: var(--blue);
  outline: none;
  box-shadow: 0 0 0 3px rgb(31 95 191 / 25%);
}
.unit {
  color: var(--ink-2);
}
.choices {
  display: flex;
  gap: var(--s2);
  flex-wrap: wrap;
  margin-bottom: var(--s3);
}
.feedback {
  margin-top: var(--s4);
  border-radius: var(--r);
}
.feedback:empty {
  display: none;
}
.feedback.is-right {
  background: var(--right-bg);
  border-left: 5px solid var(--right);
  padding: var(--s4);
}
.feedback.is-wrong {
  background: var(--wrong-bg);
  border-left: 5px solid var(--wrong);
  padding: var(--s4);
}
.feedback p {
  margin: 0 0 var(--s2);
}
.feedback.is-right strong::before {
  content: "✓ ";
}
.feedback.is-wrong strong::before {
  content: "↺ ";
}
.help {
  margin-top: var(--s4);
  display: grid;
  grid-template-columns: minmax(0, 1fr); /* a widened picture scrolls in its box; it never widens the page */
  gap: var(--s3);
}
.rung {
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: var(--s4);
  background: #fbfcfe;
}
.rung h3,
.rung-title {
  font-size: 0.95rem;
  color: var(--teal);
}
.steps {
  margin: 0;
  padding-left: 1.3em;
}
.note {
  color: var(--ink-2);
}

/* Living models */
.lm-controls {
  display: flex;
  gap: var(--s2);
  flex-wrap: wrap;
  margin-bottom: var(--s3);
}
.lm-svg {
  width: 100%;
  height: auto;
  max-height: 200px;
}
.lm-group {
  fill: none;
  stroke: var(--line-2);
  stroke-dasharray: 4 3;
}
.lm-axis,
.lm-tick {
  stroke: var(--ink-2);
  stroke-width: 2;
}
.lm-link {
  stroke: var(--q3);
  stroke-width: 3;
}
.lm-num {
  font: 600 14px var(--font);
  text-anchor: middle;
}
.lm-on {
  font-size: 18px;
  text-decoration: underline;
}
.lm-warn {
  fill: var(--wrong);
  font: 700 15px var(--font);
}
.lm-pair {
  display: grid;
  grid-template-columns: minmax(140px, 200px) 1fr;
  gap: var(--s4);
  align-items: start;
}
.lm-table {
  border-collapse: collapse;
  width: 100%;
  font-variant-numeric: tabular-nums;
}
.lm-table caption {
  text-align: left;
  color: var(--ink-2);
  font-size: 0.9rem;
}
.lm-table th,
.lm-table td {
  border: 1px solid var(--line-2);
  padding: 6px 10px;
  text-align: center;
  font-weight: 600;
}
.lm-row-on {
  background: #eef7f6;
}
.lm-eq {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--navy);
}
.lm-figure {
  margin: 0;
}

/* Progress */
.plist {
  padding-left: 1.2em;
}
.plist li {
  margin: var(--s2) 0;
}
/* A link in a list is a touch target: 44px tall, the same as every other control. */
.plist a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}
.tag {
  font-size: 0.82rem;
  color: var(--teal);
  border: 1px solid currentColor;
  border-radius: 999px;
  padding: 1px 8px;
  margin-left: var(--s2);
}

/* More drawer */
.drawer {
  border: 0;
  border-radius: var(--r-lg);
  padding: var(--s5);
  width: min(520px, calc(100vw - 32px));
  max-height: 85vh;
  box-shadow: var(--shadow);
}
.drawer::backdrop {
  background: rgb(20 40 75 / 40%);
}
.drawer-close {
  float: right;
}
.drawer h3 {
  margin-top: var(--s5);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-2);
}
.more-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.more-list a {
  display: block;
  padding: 10px 0;
  min-height: 44px;
  border-bottom: 1px solid var(--line);
}
.toggle {
  display: flex;
  gap: var(--s2);
  align-items: center;
  min-height: 44px;
}

@media (max-width: 640px) {
  .topbar {
    gap: var(--s2);
  }
  /* Phone: brand and the two utilities on row one, the three destinations as equal tabs on row two. */
  .brand {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 0.95rem;
    line-height: 1.2;
  }
  .nav {
    order: 3;
    flex: 1 1 100%;
    flex-wrap: nowrap;
    gap: 2px;
    background: rgb(255 255 255 / 8%);
    border-radius: 999px;
    padding: 3px;
  }
  .nav-link {
    flex: 1 1 0;
    justify-content: center;
    text-align: center;
    padding: var(--s1) var(--s2);
    font-size: 0.85rem;
    line-height: 1.15;
  }
  .feature {
    padding: var(--s4);
  }
  .panel {
    padding: var(--s4);
  }
  .grade-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  /* Nine grades in two rows on a phone: each button stays at least 44px wide and tall. */
  .grade-grid.is-compact {
    grid-template-columns: repeat(5, minmax(44px, 1fr));
  }
  .lm-pair {
    grid-template-columns: 1fr;
  }
}

/* Library filters: four at most, a pressed state that is more than colour (weight + border + check). */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
  margin: var(--s3) 0 var(--s4);
}
.chip {
  min-height: 44px;
  padding: 0 var(--s4);
  border-radius: 999px;
  border: 1.5px solid var(--line-2);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  cursor: pointer;
}
.chip[aria-pressed="true"] {
  border: 2px solid var(--blue-ink);
  color: var(--blue-ink);
  font-weight: 700;
  background: #eef3fc;
}
.chip[aria-pressed="true"]::before {
  content: "✓ ";
}
.chip:disabled {
  opacity: 0.55;
  cursor: default;
}
.chip-count {
  color: var(--ink-2);
  font-weight: 400;
  font-variant-numeric: tabular-nums;
}

/* Settings in the More drawer. */
.settings {
  display: grid;
  gap: var(--s1);
}
.toggle input {
  width: 24px;
  height: 24px;
  accent-color: var(--blue);
}
.field {
  display: grid;
  gap: var(--s1);
  margin-top: var(--s2);
}
.field select {
  min-height: 44px;
  font: inherit;
  padding: 0 var(--s3);
  border: 1.5px solid var(--line-2);
  border-radius: var(--r-sm);
  background: var(--surface);
  color: var(--ink);
}

/* Read-aloud and the problem line it belongs to. */
.problem-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s3);
}
.problem-row .problem {
  flex: 1 1 14rem;
}
.btn-listen {
  min-height: 44px;
}

/* Words to know and sentence frames: offered in a disclosure, never in the way of the first action. */
.words,
.say-it {
  margin-top: var(--s4);
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--surface);
  padding: 0 var(--s4);
}
.words summary,
.say-it summary {
  min-height: 44px;
  display: flex;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  color: var(--blue-ink);
}
.terms {
  margin: 0 0 var(--s4);
  display: grid;
  gap: var(--s3);
}
.term dt {
  font-weight: 700;
}
.term-other {
  font-weight: 400;
  color: var(--ink-2);
}
.term dd {
  margin: 2px 0 0;
}
.say-prompt {
  margin: 0 0 var(--s2);
}
.frames {
  margin: 0 0 var(--s4);
  padding-left: 1.2em;
}
.blank {
  display: inline-block;
  min-width: 4ch;
  border-bottom: 2px solid var(--ink-2);
  color: transparent;
}
.frame-box .cv {
  margin-top: var(--s2);
}
.prereq {
  margin: var(--s3) 0 0;
  padding: var(--s2) var(--s3);
  border-left: 4px solid var(--teal);
  background: #eef7f6;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

/* The lab's legacy model pictures (skills with no studio engine yet) drawn in this app's style. */
.model-fallback {
  display: grid;
  justify-items: center;
  gap: var(--s2);
  padding: var(--s4);
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--surface);
}
.model-fallback .model-caption {
  margin: 0;
  color: var(--ink-2);
  text-align: center;
}
.model-fallback .math-model-svg {
  width: 100%;
  max-width: 420px;
}
.model-fallback .model-fill {
  fill: var(--q2);
  fill-opacity: 0.85;
}
.model-fallback .model-fill-alt {
  fill: var(--q1);
  fill-opacity: 0.85;
}
.model-fallback .clock-face {
  fill: var(--surface);
  stroke: var(--ink);
  stroke-width: 3;
}
.model-fallback .clock-hand {
  stroke: var(--navy);
  stroke-width: 4;
  stroke-linecap: round;
}
.model-fallback .plot-point {
  fill: var(--q3);
}
.model-fallback .ratio-model {
  font-variant-numeric: tabular-nums;
  text-align: center;
}
.model-fallback .ratio-model th {
  background: #eef3fc;
  color: var(--navy);
}
.model-fallback text {
  font-family: var(--font);
  fill: var(--ink);
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}
@media (forced-colors: active) {
  .btn,
  .grade-btn,
  .card {
    border: 1px solid ButtonText;
  }
}