/* Thematic Units (/units): unit cards, overview, map, lesson pages, project, certificate and printable packet.
   Built on ds.css tokens only. One accent per unit is set on `.un-accent-*` and read as --un-accent / -soft. */

.un,
.un-hub,
.un-card {
  --un-accent: var(--brand-ink);
  --un-soft: var(--brand-soft);
}
.un-accent-teal {
  --un-accent: var(--listening-ink);
  --un-soft: var(--listening-soft);
}
.un-accent-blue {
  --un-accent: var(--reading-ink);
  --un-soft: var(--reading-soft);
}
.un-accent-rose {
  --un-accent: var(--speaking-ink);
  --un-soft: var(--speaking-soft);
}
.un-accent-amber {
  --un-accent: var(--writing-ink);
  --un-soft: var(--writing-soft);
}
.un-accent-green {
  --un-accent: var(--sage-900);
  --un-soft: var(--right-soft);
}
.un-accent-indigo {
  --un-accent: var(--brand-ink);
  --un-soft: var(--brand-soft);
}
.un-accent-coral {
  --un-accent: color-mix(in srgb, var(--rose-600) 60%, var(--rose-900));
  --un-soft: color-mix(in srgb, var(--rose-200) 30%, var(--surface));
}
.un-accent-slate {
  --un-accent: var(--ink-2);
  --un-soft: var(--surface-3);
}

.un,
.un-hub {
  display: grid;
  gap: var(--s-5);
}
.un h2,
.un-hub h2 {
  font-family: var(--font-display);
  margin: 0 0 var(--s-3);
}
.un h3 {
  margin: var(--s-4) 0 var(--s-2);
}
.un-prose p,
.un-text p {
  max-width: var(--measure);
  line-height: 1.65;
}
.un-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--s-1);
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  background: var(--un-soft);
  color: var(--un-accent);
  font-size: 0.85rem;
  font-weight: 700;
}
.un-chip-listening {
  background: var(--listening-soft);
  color: var(--listening-ink);
}
.un-chip-reading {
  background: var(--reading-soft);
  color: var(--reading-ink);
}
.un-chip-speaking {
  background: var(--speaking-soft);
  color: var(--speaking-ink);
}
.un-chip-writing {
  background: var(--writing-soft);
  color: var(--writing-ink);
}
.un-bar {
  height: 0.55rem;
  border-radius: 999px;
  background: var(--surface-3);
  overflow: hidden;
}
.un-bar span {
  display: block;
  height: 100%;
  background: var(--un-accent);
  border-radius: inherit;
}
.un-done {
  color: var(--right);
  font-weight: 700;
  display: inline-flex;
  gap: var(--s-1);
  align-items: center;
}

/* hub */
.un-grid {
  display: grid;
  gap: var(--s-4);
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 17rem), 1fr));
}
.un-card {
  display: grid;
  gap: var(--s-2);
  align-content: start;
  padding: var(--s-4);
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 6px solid var(--un-accent);
  box-shadow: var(--shadow);
  color: var(--ink);
  text-decoration: none;
  min-height: 11rem;
}
.un-card:hover {
  box-shadow: var(--shadow-lift);
}
.un-card:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}
.un-card-top {
  display: flex;
  gap: var(--s-2);
  align-items: center;
}
.un-card-ico {
  display: grid;
  place-items: center;
  inline-size: 2.5rem;
  block-size: 2.5rem;
  border-radius: 50%;
  background: var(--un-soft);
  color: var(--un-accent);
}
.un-card-n {
  font-weight: 700;
  color: var(--un-accent);
}
.un-card-done {
  margin-inline-start: auto;
  color: var(--right);
  font-weight: 700;
  display: inline-flex;
  gap: var(--s-1);
}
.un-card-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
}
.un-card-text,
.un-card-meta {
  color: var(--ink-2);
}
.un-card-meta {
  font-size: 0.9rem;
}
.un-resume {
  border-inline-start: 6px solid var(--brand);
}

/* overview hero and tabs */
.un-hero {
  display: grid;
  gap: var(--s-4);
  padding: var(--s-5);
  border-radius: var(--r-lg);
  background: var(--un-soft);
  border: 1px solid var(--line);
  border-inline-start: 8px solid var(--un-accent);
}
.un-hero h1 {
  font-family: var(--font-display);
  margin: 0.2rem 0;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}
.un-hero .eyebrow {
  color: var(--un-accent);
  display: flex;
  gap: var(--s-2);
  align-items: center;
}
.un-goal {
  font-size: 1.15rem;
}
.un-hero-progress {
  display: grid;
  gap: var(--s-1);
  max-inline-size: 28rem;
}
.un-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
}
.un-tabs .cat-chip {
  min-block-size: var(--target);
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.un-two {
  display: grid;
  gap: var(--s-4);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
}
.un-question {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--un-accent);
}
.un-goals,
.un-vocab,
.un-lessons,
.un-words,
.un-checks,
.un-frames,
.un-bank,
.un-alts,
.un-talk {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--s-3);
}
.un-talk {
  list-style: decimal;
  padding-inline-start: 1.4rem;
}
.un-goals li {
  display: grid;
  gap: var(--s-1);
}
.un-vocab {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 15rem), 1fr));
}
.un-vocab-item,
.un-word {
  padding: var(--s-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  display: grid;
  gap: var(--s-1);
}
.un-term-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  align-items: center;
  margin: 0;
}
.un-es {
  color: var(--un-accent);
  font-weight: 700;
}
.un-lesson-card a {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--s-3);
  align-items: start;
  padding: var(--s-4);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--shadow);
  min-block-size: var(--target);
}
.un-lesson-card a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}
.un-lesson-n,
.un-step-n,
.un-stepchip {
  display: inline-grid;
  place-items: center;
  inline-size: 2.5rem;
  block-size: 2.5rem;
  border-radius: 50%;
  background: var(--un-soft);
  color: var(--un-accent);
  font-weight: 700;
  border: 2px solid var(--un-accent);
}
.un-lesson-card.is-done .un-lesson-n,
.un-step.is-done .un-step-n,
.un-stepchip.is-done {
  background: var(--un-accent);
  color: var(--on-brand);
}
.un-lesson-body {
  display: grid;
  gap: var(--s-1);
}
.un-lesson-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  align-items: center;
}
.un-dl {
  display: grid;
  gap: var(--s-3);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  margin: var(--s-3) 0;
}
.un-dl dt {
  font-weight: 700;
  color: var(--un-accent);
}
.un-dl dd {
  margin: 0;
}

/* map: the path is drawn in SVG, the stops are real links laid over it */
.un-map { margin: 0; padding: var(--s-4); border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--line); }
.un-map-canvas { position: relative; inline-size: 100%; max-inline-size: 60rem; margin-inline: auto; }
.un-map-tall { display: none; max-inline-size: 22rem; }
.un-map-svg { position: absolute; inset: 0; inline-size: 100%; block-size: 100%; }
.un-map-path { fill: none; stroke: var(--line-strong); stroke-width: 10; stroke-linecap: round; stroke-dasharray: 2 18; }
.un-map-trail { fill: none; stroke: var(--un-accent); stroke-width: 10; stroke-linecap: round; }
.un-stop {
  position: absolute; transform: translate(-50%, -50%); aspect-ratio: 1; min-inline-size: var(--target); border-radius: 50%; display: grid; place-items: center;
  background: var(--surface); border: 4px solid var(--un-accent); color: var(--un-accent); font-weight: 700; font-size: 1.2rem; text-decoration: none;
}
.un-stop.is-done { background: var(--un-accent); color: var(--on-brand); }
.un-stop.is-current { box-shadow: 0 0 0 5px var(--surface), 0 0 0 8px var(--un-accent); }
.un-stop .ico { inline-size: 1.4rem; block-size: 1.4rem; }
.un-stop:hover, .un-stop:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; }
.un-stop-cap { position: absolute; inset-block-start: calc(100% + 0.4rem); font-size: 0.85rem; color: var(--ink-2); white-space: nowrap; }
.un-map-tall .un-stop-cap { white-space: normal; inline-size: 6.5rem; line-height: 1.2; }
.un-map-tall .un-stop:nth-of-type(odd) .un-stop-cap { inset-block-start: 50%; inset-inline-start: calc(100% + 0.6rem); transform: translateY(-50%); }
.un-map-tall .un-stop:nth-of-type(even) .un-stop-cap { inset-block-start: 50%; inset-inline-end: calc(100% + 0.6rem); transform: translateY(-50%); text-align: end; }
@media (max-width: 640px) {
  .un-map-wide { display: none; }
  .un-map-tall { display: block; }
}

/* lesson */
.un-lesson {
  max-inline-size: 60rem;
  margin-inline: auto;
  inline-size: 100%;
}
.un-stepnav ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  list-style: none;
  padding: 0;
  margin: 0;
}
.un-stepchip {
  cursor: pointer;
  font: inherit;
  min-inline-size: var(--target);
  min-block-size: var(--target);
}
.un-stepchip:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}
.un-step-head {
  display: flex;
  gap: var(--s-3);
  align-items: center;
  margin-block-end: var(--s-3);
}
.un-step-head h2 {
  margin: 0;
}
.un-step-head .eyebrow {
  margin: 0;
  display: flex;
  gap: var(--s-1);
  align-items: center;
}
.un-warm {
  border-inline-start: 6px solid var(--un-accent);
}
.un-prompt {
  font-size: 1.1rem;
}
.un-why {
  color: var(--ink-2);
}
.un-text {
  font-size: 1.1rem;
}
.un-text-title {
  font-family: var(--font-display);
}
.un-term {
  font: inherit;
  color: var(--un-accent);
  background: var(--un-soft);
  border: 0;
  border-block-end: 2px solid var(--un-accent);
  border-radius: 4px 4px 0 0;
  padding: 0 0.15em;
  cursor: pointer;
  min-block-size: 1.5rem;
}
.un-term:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}
.un-termcard {
  margin-block: var(--s-3);
  border-inline-start: 6px solid var(--un-accent);
}
.un-levels {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-block: var(--s-3);
}
.un-levels .cat-chip {
  min-block-size: var(--target);
}
.un-qs {
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--s-4);
  margin-block-start: var(--s-4);
}
.un-q {
  display: grid;
  gap: var(--s-2);
}
.un-q-stem {
  font-weight: 700;
  margin: 0;
}
.un-choices {
  display: grid;
  gap: var(--s-2);
}
.un-choice {
  text-align: start;
  min-block-size: var(--target);
  padding: var(--s-2) var(--s-4);
  border-radius: var(--radius-sm);
  border: 2px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  cursor: pointer;
}
.un-choice:hover:not([disabled]) {
  border-color: var(--un-accent);
  background: var(--un-soft);
}
.un-choice:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}
.un-choice.is-right {
  border-color: var(--right);
  background: var(--right-soft);
  color: var(--ink);
}
.un-choice.is-missed {
  border-style: dashed;
  color: var(--ink-3);
  text-decoration: line-through;
  background: var(--surface-2);
}
.un-fb {
  margin: 0;
  min-block-size: 1.2rem;
}
.un-blank {
  display: inline-block;
  min-inline-size: 5rem;
  text-align: center;
  border-block-end: 2px solid var(--ink);
  font-weight: 700;
}
.un-act {
  display: grid;
  gap: var(--s-2);
}
.un-act-top {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  align-items: center;
  margin: 0;
}
.un-markrow {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  align-items: center;
  margin-block-start: var(--s-4);
}
.un-task-block {
  display: grid;
  gap: var(--s-3);
}
.un-textarea,
.un-input {
  inline-size: 100%;
  font: inherit;
  padding: var(--s-3);
  border: 2px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  line-height: 1.5;
}
.un-textarea:focus-visible,
.un-input:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}
.un-label {
  font-weight: 700;
}
.un-bank {
  grid-template-columns: repeat(auto-fill, minmax(8rem, 1fr));
}
.un-bank .gloss-chip {
  inline-size: 100%;
  min-block-size: var(--target);
}
.un-checks {
  border: 0;
  padding: 0;
}
.un-checks legend {
  font-weight: 700;
  padding: 0;
  margin-block-end: var(--s-2);
}
.un-check {
  display: flex;
  gap: var(--s-3);
  align-items: flex-start;
  min-block-size: var(--target);
  cursor: pointer;
}
.un-check input {
  inline-size: 1.4rem;
  block-size: 1.4rem;
  margin-block-start: 0.15rem;
  accent-color: var(--un-accent);
  flex: none;
}
.un-model {
  background: var(--surface-2);
  padding: var(--s-3);
  border-radius: var(--radius-sm);
}
.un-foot {
  border-inline-start: 6px solid var(--un-accent);
}
.un-rubric {
  border: 0;
  padding: 0;
  display: grid;
  gap: var(--s-4);
}
.un-rubric-row {
  display: grid;
  gap: var(--s-2);
}
.un-rubric-name {
  font-weight: 700;
  margin: 0;
}
.un-rubric-opt {
  display: grid;
  gap: var(--s-1);
  padding: var(--s-3);
  border: 2px solid var(--line-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: var(--surface);
}
.un-rubric-opt.is-picked {
  border-color: var(--un-accent);
  background: var(--un-soft);
}
.un-rubric-opt input {
  position: absolute;
  opacity: 0;
}
.un-rubric-opt:has(input:focus-visible) {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}
.un-rubric-band {
  font-weight: 700;
  color: var(--un-accent);
}
@media (min-width: 52rem) {
  .un-rubric-row {
    grid-template-columns: 10rem repeat(3, 1fr);
    align-items: stretch;
  }
  .un-hero {
    grid-template-columns: 1fr minmax(14rem, 22rem);
    align-items: end;
  }
}

/* plan, packet, tables */
.un-tablewrap {
  overflow-x: auto;
}
.un-table {
  border-collapse: collapse;
  inline-size: 100%;
}
.un-table th,
.un-table td {
  border: 1px solid var(--line);
  padding: var(--s-2) var(--s-3);
  text-align: start;
  vertical-align: top;
}
.un-table thead th {
  background: var(--un-soft);
  color: var(--ink);
}
.un-plan-steps {
  padding-inline-start: 1.2rem;
}
.un-letter-body {
  max-inline-size: var(--measure);
}
.un-lines {
  display: grid;
  gap: 2.1rem;
  margin-block: var(--s-4);
}
.un-lines span {
  border-block-end: 1px solid var(--ink-3);
  block-size: 0;
}
.un-pk-cover,
.un-pk-block {
  display: grid;
  gap: var(--s-2);
}

/* certificate */
.un-cert {
  text-align: center;
  padding: var(--s-7) var(--s-5);
  background: var(--surface);
  border: 6px double var(--un-accent);
  border-radius: var(--r-lg);
  display: grid;
  gap: var(--s-3);
  margin-block: var(--s-4);
}
.un-cert h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.2rem);
  margin: 0;
  color: var(--un-accent);
}
.un-cert-eyebrow,
.un-cert-fine {
  color: var(--ink-3);
  font-size: 0.9rem;
  margin: 0;
}
.un-cert-name {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 5vw, 2.6rem);
  margin: 0;
  border-block-end: 2px solid var(--line-strong);
  justify-self: center;
  padding-inline: var(--s-6);
}
.un-cert-unit {
  font-family: var(--font-display);
  font-size: 1.8rem;
  margin: 0;
}
.un-cert-line,
.un-cert-date {
  margin: 0;
}
.un-cert-tools {
  display: grid;
  gap: var(--s-2);
  max-inline-size: 32rem;
}

@media (prefers-reduced-motion: no-preference) {
  .un-card,
  .un-choice {
    transition:
      box-shadow var(--dur-2) var(--ease-out),
      border-color var(--dur-2) var(--ease-out),
      background var(--dur-2) var(--ease-out);
  }
}

@media print {
  .un-packet .un-pk-lesson,
  .un-pk-sheets > .un-pk-block,
  .un-cert {
    break-inside: avoid;
  }
  .un-pk-block + .un-pk-block {
    break-before: auto;
  }
  .un-pk-lesson,
  .un-pk-sheets,
  .un-pk-letter {
    break-before: page;
  }
  .un-hero,
  .un-cert {
    background: none;
  }
  .un-cert {
    page-break-after: avoid;
    border-width: 4px;
    padding: var(--s-6);
  }
  .un-table th,
  .un-table td {
    padding: 0.3rem 0.5rem;
  }
  @page {
    margin: 1.5cm;
  }
}