/* =============================================================
   placement.css — Econometrics Placement Diagnostic.
   Compact first-screen orientation, native controls, no framework.
   ============================================================= */

.placement-skip {
  position: fixed;
  top: 0.65rem;
  left: 0.65rem;
  z-index: 300;
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  color: #1a1407;
  background: var(--gold-harvest);
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}

.placement-skip:focus { transform: translateY(0); }

.placement-page {
  width: min(100%, 80rem);
  margin-inline: auto;
  padding: calc(4rem + clamp(1.15rem, 3vw, 2.4rem)) var(--pad) 5rem;
}

.placement-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.48rem;
  margin-bottom: clamp(1rem, 2vw, 1.6rem);
  color: var(--ink-faint);
  font-size: 0.86rem;
}

.placement-breadcrumb a { color: var(--ink-dim); }

.placement-eyebrow {
  color: var(--gold-harvest);
  font-size: 0.71rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.placement-command {
  display: grid;
  grid-template-columns: minmax(17rem, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(1rem, 3vw, 2.2rem);
  align-items: stretch;
}

.placement-hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: clamp(0.5rem, 2vw, 1.25rem) 0;
}

.placement-hero h1 {
  max-width: 10ch;
  margin-top: 0.42rem;
  font-size: clamp(2.45rem, 1.65rem + 3.2vw, 4.75rem);
  line-height: 0.97;
  letter-spacing: -0.038em;
  text-wrap: balance;
  color: transparent;
  background: linear-gradient(145deg, var(--gold-celadon), #f1d27a 43%, var(--gold-harvest), var(--gold-mystic));
  -webkit-background-clip: text;
  background-clip: text;
}

.placement-hero > p:not(.placement-eyebrow) {
  max-width: 32rem;
  margin-top: 0.85rem;
  color: var(--ink-dim);
  font-size: 0.98rem;
}

.placement-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  max-width: 26rem;
  margin-top: 1.25rem;
  padding: 0;
  list-style: none;
}

.placement-hero__facts li {
  display: grid;
  gap: 0.08rem;
  padding-right: 0.8rem;
}

.placement-hero__facts li + li {
  padding-left: 0.8rem;
  border-left: 1px solid var(--hairline);
}

.placement-hero__facts strong {
  color: var(--ink);
  font-size: 1.12rem;
  font-variant-numeric: tabular-nums;
}

.placement-hero__facts span {
  color: var(--ink-faint);
  font-size: 0.73rem;
  line-height: 1.25;
}

.placement-app {
  min-width: 0;
  min-height: 29rem;
  border: 1px solid color-mix(in srgb, var(--gold-mystic) 32%, transparent);
  border-radius: 22px;
  background:
    radial-gradient(circle at 90% 0, color-mix(in srgb, var(--gold-harvest) 11%, transparent), transparent 24rem),
    linear-gradient(150deg, color-mix(in srgb, var(--bg-elev) 94%, var(--gold-mystic)), var(--bg-elev));
  box-shadow: 0 28px 85px rgba(0, 0, 0, 0.34);
  overflow: hidden;
}

.placement-app[aria-busy="true"] { cursor: progress; }

#placementLive { min-height: inherit; }

.placement-intro {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 29rem;
  padding: clamp(1.35rem, 4vw, 3rem);
}

.placement-intro h2 {
  max-width: 15ch;
  margin-top: 0.42rem;
  font-size: clamp(1.8rem, 1.35rem + 1.6vw, 2.75rem);
  line-height: 1.04;
  letter-spacing: -0.026em;
  text-wrap: balance;
}

.placement-intro > p:not(.placement-eyebrow, .placement-privacy, .placement-noscript) {
  max-width: 45rem;
  margin-top: 0.8rem;
  color: var(--ink-dim);
}

.placement-format-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.15rem;
}

.placement-format-strip span,
.placement-question__meta span {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding: 0.22rem 0.58rem;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  color: var(--ink-dim);
  background: color-mix(in srgb, var(--bg) 42%, transparent);
  font-size: 0.74rem;
  line-height: 1.2;
}

.placement-intro__actions,
.placement-results__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.35rem;
}

.placement-primary { justify-content: center; min-height: 2.75rem; }

.placement-intro__actions .btn,
.placement-results__actions .btn,
.placement-question__actions .btn {
  min-height: 2.75rem;
}

.placement-privacy,
.placement-noscript,
.placement-results__no-points {
  max-width: 50rem;
  margin-top: 1.15rem;
  color: var(--ink-faint);
  font-size: 0.78rem;
  line-height: 1.45;
}

.placement-noscript { color: #ffbd94; }

.placement-status {
  min-height: 1.55rem;
  padding: 0.35rem clamp(1.35rem, 4vw, 3rem) 0.55rem;
  color: var(--ink-faint);
  background: color-mix(in srgb, var(--bg) 30%, transparent);
  font-size: 0.78rem;
}

.placement-status:empty { display: none; }
.placement-status--success { color: #c4d9a3; }
.placement-status--error { color: #ffb08a; }

.placement-saved-route {
  display: grid;
  gap: 0.35rem;
  margin-top: 1.15rem;
  padding: 0.95rem 1rem;
  border: 1px solid var(--hairline);
  border-radius: 14px;
  background: color-mix(in srgb, var(--bg) 36%, transparent);
}

.placement-saved-route > span {
  color: var(--ink-faint);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.placement-saved-route > a { width: fit-content; font-size: 1.15rem; font-weight: 700; }

.placement-mini-route,
.placement-route {
  padding: 0;
  list-style: none;
}

.placement-mini-route {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  margin-top: 0.35rem;
}

.placement-mini-route li { display: flex; gap: 0.34rem; align-items: baseline; font-size: 0.8rem; }
.placement-route__number { color: var(--ink-faint); font-size: 0.69rem; font-variant-numeric: tabular-nums; }

.placement-section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.72fr);
  gap: 1rem 2.5rem;
  align-items: end;
  margin-bottom: 1.25rem;
}

.placement-section-head h2 {
  margin-top: 0.28rem;
  font-size: clamp(1.65rem, 1.35rem + 1vw, 2.35rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.placement-section-head > p { color: var(--ink-dim); font-size: 0.9rem; }

.placement-coverage,
.placement-bands {
  margin-top: clamp(3.5rem, 8vw, 6rem);
}

.placement-method-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--hairline);
  border-left: 1px solid var(--hairline);
}

.placement-method-grid a {
  display: grid;
  align-content: start;
  min-width: 0;
  min-height: 10rem;
  padding: 1rem;
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  color: var(--ink);
  text-decoration: none;
  background: color-mix(in srgb, var(--bg-elev) 70%, transparent);
  transition: background 0.18s var(--ease), transform 0.18s var(--ease);
}

.placement-method-grid a:hover {
  background: color-mix(in srgb, var(--gold-harvest) 7%, var(--bg-elev));
  transform: translateY(-2px);
}

.placement-method-grid span {
  color: var(--gold-harvest);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.placement-method-grid strong { margin-top: 0.45rem; font-size: 1rem; line-height: 1.2; }
.placement-method-grid small { margin-top: 0.5rem; color: var(--ink-faint); font-size: 0.78rem; line-height: 1.45; }

.placement-bands ol {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  padding: 0;
  list-style: none;
}

.placement-bands li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.8rem;
  padding: 1rem;
  border: 1px solid var(--hairline);
  border-radius: 14px;
  background: var(--bg-elev);
}

.placement-bands li > span { color: var(--gold-harvest); font-size: 0.78rem; }
.placement-bands h3 { font-size: 1rem; line-height: 1.25; }
.placement-bands p { margin-top: 0.3rem; color: var(--ink-dim); font-size: 0.84rem; }

/* ---- Live question workspace -------------------------------- */
.placement-question-shell {
  display: grid;
  grid-template-columns: 13.5rem minmax(0, 1fr);
  min-height: 32rem;
}

.placement-skill-rail {
  padding: 1.1rem;
  border-right: 1px solid var(--hairline);
  background: color-mix(in srgb, var(--bg) 38%, transparent);
}

.placement-skill-rail__top {
  display: grid;
  gap: 0.08rem;
  color: var(--ink-dim);
  font-size: 0.78rem;
}

.placement-skill-rail__top strong { color: var(--ink-faint); font-size: 0.7rem; font-weight: 400; }

.placement-skill-rail progress {
  width: 100%;
  height: 0.34rem;
  margin: 0.7rem 0 1rem;
  border: 0;
  border-radius: 999px;
  overflow: hidden;
  background: color-mix(in srgb, var(--ink) 10%, transparent);
}

.placement-skill-rail progress::-webkit-progress-bar { background: color-mix(in srgb, var(--ink) 10%, transparent); }
.placement-skill-rail progress::-webkit-progress-value { background: linear-gradient(90deg, var(--gold-mystic), var(--gold-harvest)); }
.placement-skill-rail progress::-moz-progress-bar { background: linear-gradient(90deg, var(--gold-mystic), var(--gold-harvest)); }

.placement-skill-rail ol { display: grid; gap: 0.32rem; padding: 0; list-style: none; }

.placement-skill-rail li {
  display: grid;
  grid-template-columns: 1.25rem minmax(0, 1fr) auto;
  gap: 0.42rem;
  align-items: center;
  min-height: 2.25rem;
  padding: 0.32rem 0.42rem;
  border: 1px solid transparent;
  border-radius: 9px;
  color: var(--ink-faint);
  font-size: 0.74rem;
}

.placement-skill-rail li.is-current {
  border-color: color-mix(in srgb, var(--gold-harvest) 35%, transparent);
  color: var(--ink);
  background: color-mix(in srgb, var(--gold-harvest) 7%, transparent);
}

.placement-skill-rail li.is-complete { color: var(--ink-dim); }
.placement-skill-rail__mark { color: var(--gold-harvest); text-align: center; font-variant-numeric: tabular-nums; }
.placement-skill-rail small { font-size: 0.67rem; }

.placement-question {
  min-width: 0;
  padding: clamp(1.35rem, 4vw, 2.8rem);
}

.placement-question__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
  margin-bottom: 0.85rem;
}

.placement-question__meta .placement-difficulty {
  color: #1a1407;
  border-color: transparent;
  background: linear-gradient(140deg, var(--gold-celadon), var(--gold-harvest));
  font-weight: 700;
  text-transform: capitalize;
}

.placement-question h2 {
  font-size: 0.78rem;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.placement-question__prompt {
  max-width: 50rem;
  margin-top: 0.5rem;
  font-size: clamp(1.2rem, 1rem + 0.72vw, 1.65rem);
  line-height: 1.25;
  text-wrap: balance;
}

.placement-form { margin-top: 1.2rem; }

.placement-options {
  display: grid;
  gap: 0.55rem;
  min-width: 0;
  padding: 0;
  border: 0;
}

.placement-options--boolean { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.placement-option {
  display: grid;
  grid-template-columns: 1.1rem 1.65rem minmax(0, 1fr);
  gap: 0.58rem;
  align-items: start;
  min-width: 0;
  min-height: 3rem;
  padding: 0.7rem 0.78rem;
  border: 1px solid var(--hairline);
  border-radius: 12px;
  color: var(--ink-dim);
  background: color-mix(in srgb, var(--bg) 42%, transparent);
  cursor: pointer;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease), color 0.18s var(--ease);
}

.placement-option:hover {
  color: var(--ink);
  border-color: color-mix(in srgb, var(--gold-harvest) 44%, transparent);
}

.placement-option:has(input:checked) {
  color: var(--ink);
  border-color: color-mix(in srgb, var(--gold-harvest) 68%, transparent);
  background: color-mix(in srgb, var(--gold-harvest) 9%, var(--bg));
}

.placement-option input {
  width: 1.08rem;
  height: 1.08rem;
  margin-top: 0.22rem;
  accent-color: var(--gold-harvest);
}

.placement-option__letter {
  display: grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  border: 1px solid var(--hairline);
  border-radius: 6px;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.placement-written {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
}

.placement-input {
  width: min(100%, 22rem);
  min-height: 3rem;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--hairline);
  border-radius: 10px;
  outline: 0;
  color: var(--ink);
  background: color-mix(in srgb, var(--bg) 58%, transparent);
  font-size: max(1rem, 16px);
}

.placement-input:focus {
  border-color: var(--gold-harvest);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--gold-harvest) 16%, transparent);
}

.placement-input__unit { color: var(--ink-faint); font-size: 0.82rem; }

.placement-question__error {
  margin-top: 0.65rem;
  color: #ffb08a;
  font-size: 0.84rem;
}

.placement-question__actions {
  display: flex;
  justify-content: space-between;
  gap: 0.65rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--hairline);
}

.placement-question__actions button:disabled,
.placement-intro__actions button:disabled,
.placement-results__actions button:disabled {
  opacity: 0.48;
  cursor: not-allowed;
}

/* ---- Results ------------------------------------------------- */
.placement-results { padding: clamp(1.25rem, 4vw, 2.8rem); }

.placement-results__hero {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1.15rem;
  align-items: center;
}

.placement-score {
  --placement-score: 0deg;
  display: grid;
  place-items: center;
  width: clamp(5.3rem, 10vw, 7rem);
  aspect-ratio: 1;
  border-radius: 50%;
  background: conic-gradient(var(--gold-harvest) var(--placement-score), color-mix(in srgb, var(--ink) 9%, transparent) 0);
  box-shadow: 0 0 35px color-mix(in srgb, var(--gold-harvest) 13%, transparent);
}

.placement-score > span {
  display: grid;
  place-items: baseline center;
  width: calc(100% - 0.72rem);
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--bg-elev);
  align-content: center;
  color: var(--ink-faint);
  font-size: 0.75rem;
}

.placement-score strong { color: var(--ink); font-size: 1.7rem; line-height: 1; }

.placement-results__copy h2,
.placement-recommendation h2,
.placement-topic-profile h2,
.placement-results__section-head h2 {
  margin-top: 0.25rem;
  font-size: clamp(1.55rem, 1.25rem + 1.1vw, 2.3rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.placement-results__copy > p:last-child { max-width: 42rem; margin-top: 0.52rem; color: var(--ink-dim); }

.placement-recommendation {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(15rem, 0.85fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.placement-recommendation__copy,
.placement-recommendation__path,
.placement-topic-profile {
  padding: 1.15rem;
  border: 1px solid var(--hairline);
  border-radius: 14px;
  background: color-mix(in srgb, var(--bg) 34%, transparent);
}

.placement-recommendation__copy > p:not(.placement-eyebrow) { margin-top: 0.5rem; color: var(--ink-dim); font-size: 0.88rem; }
.placement-recommendation__copy .btn { margin-top: 0.9rem; }

.placement-route { display: grid; gap: 0.55rem; margin-top: 0.75rem; }

.placement-route li {
  display: grid;
  grid-template-columns: 1.35rem minmax(0, 1fr);
  gap: 0.55rem;
  align-items: baseline;
  padding-bottom: 0.52rem;
  border-bottom: 1px solid var(--hairline);
  font-size: 0.86rem;
}

.placement-route li:last-child { padding-bottom: 0; border-bottom: 0; }

.placement-topic-profile { margin-top: 1rem; }
.placement-topic-profile ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem 1.25rem; margin-top: 0.9rem; padding: 0; list-style: none; }
.placement-topic-profile li > div { display: flex; justify-content: space-between; gap: 0.6rem; color: var(--ink-dim); font-size: 0.78rem; }
.placement-topic-profile__meter { display: block; height: 0.34rem; margin-top: 0.35rem; border-radius: 999px; background: color-mix(in srgb, var(--ink) 9%, transparent); overflow: hidden; }
.placement-topic-profile__meter > span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--gold-mystic), var(--gold-harvest)); }

.placement-explanations { margin-top: 2rem; padding-top: 1.6rem; border-top: 1px solid var(--hairline); }
.placement-explanations__intro { margin: 0.55rem 0 1rem; color: var(--ink-dim); font-size: 0.88rem; }

.placement-explanation { border-top: 1px solid var(--hairline); }
.placement-explanation:last-child { border-bottom: 1px solid var(--hairline); }

.placement-explanation summary {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr) auto 1rem;
  gap: 0.65rem;
  align-items: center;
  min-height: 3.2rem;
  padding: 0.6rem 0.25rem;
  cursor: pointer;
  list-style: none;
}

.placement-explanation summary::-webkit-details-marker { display: none; }
.placement-explanation summary::after { content: "+"; grid-column: 4; color: var(--gold-harvest); }
.placement-explanation[open] summary::after { content: "−"; }
.placement-explanation__number { color: var(--ink-faint); font-family: var(--font-mono); font-size: 0.7rem; }
.placement-explanation__topic { color: var(--ink-dim); font-size: 0.86rem; }
.placement-explanation summary strong { font-size: 0.75rem; }
.placement-explanation.is-correct summary strong { color: #c4d9a3; }
.placement-explanation.is-review summary strong { color: #ffb08a; }

.placement-explanation__body { max-width: 50rem; padding: 0 0.25rem 1.1rem 2.9rem; }
.placement-explanation__prompt { color: var(--ink); font-weight: 700; line-height: 1.45; }
.placement-explanation__body > p:last-child { margin-top: 0.75rem; color: var(--ink-dim); font-size: 0.88rem; }

.placement-explanation__answers {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.25rem 0.7rem;
  margin-top: 0.75rem;
  font-size: 0.8rem;
}

.placement-explanation__answers dt { color: var(--ink-faint); }
.placement-explanation__answers dd { color: var(--ink-dim); overflow-wrap: anywhere; }

.placement-foot {
  margin-top: clamp(3rem, 7vw, 5rem);
  color: var(--ink-faint);
  text-align: center;
  font-size: 0.84rem;
}

@media (max-width: 1040px) {
  .placement-command { grid-template-columns: minmax(15rem, 0.62fr) minmax(0, 1.38fr); }
  .placement-question-shell { grid-template-columns: 11.5rem minmax(0, 1fr); }
  .placement-method-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  .placement-command { grid-template-columns: 1fr; }
  .placement-hero { padding: 0 0 0.4rem; }
  .placement-hero h1 { max-width: 13ch; }
  .placement-app { min-height: 0; }
  .placement-intro { min-height: 24rem; }
  .placement-question-shell { grid-template-columns: 1fr; }
  .placement-skill-rail { border-right: 0; border-bottom: 1px solid var(--hairline); }
  .placement-skill-rail progress { margin-bottom: 0.65rem; }
  .placement-skill-rail ol { grid-template-columns: repeat(auto-fit, minmax(6.5rem, 1fr)); gap: 0.2rem; }
  .placement-skill-rail li { min-height: 2rem; }
  .placement-recommendation { grid-template-columns: 1fr; }
  .placement-section-head { grid-template-columns: 1fr; align-items: start; }
  .placement-method-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .placement-page { padding-top: calc(3.6rem + 1rem); }
  .placement-breadcrumb { margin-bottom: 0.8rem; }
  .placement-hero h1 { font-size: clamp(2.3rem, 12vw, 3.25rem); }
  .placement-hero > p:not(.placement-eyebrow) { margin-top: 0.65rem; }
  .placement-hero__facts { margin-top: 0.9rem; }
  .placement-intro { min-height: 0; }
  .placement-options--boolean { grid-template-columns: 1fr; }
  .placement-option { grid-template-columns: 1.05rem 1.45rem minmax(0, 1fr); padding: 0.68rem; }
  .placement-topic-profile ul { grid-template-columns: 1fr; }
  .placement-bands ol { grid-template-columns: 1fr; }
  .placement-results__hero { align-items: start; }
}

@media (max-width: 430px) {
  .placement-method-grid { grid-template-columns: 1fr; }
  .placement-method-grid a { min-height: 8.2rem; }
  .placement-skill-rail ol { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .placement-intro__actions,
  .placement-results__actions,
  .placement-question__actions { display: grid; grid-template-columns: 1fr; }
  .placement-intro__actions .btn,
  .placement-results__actions .btn,
  .placement-question__actions .btn { width: 100%; justify-content: center; }
  .placement-question__actions .btn:first-child { order: 2; }
  .placement-results__hero { grid-template-columns: 1fr; }
  .placement-score { width: 5.2rem; }
  .placement-explanation summary { grid-template-columns: 1.7rem minmax(0, 1fr) auto 1rem; }
  .placement-explanation summary::after { grid-column: 4; }
  .placement-explanation__body { padding-left: 0.25rem; }
  .placement-explanation__answers { grid-template-columns: 1fr; }
  .placement-explanation__answers dd + dt { margin-top: 0.3rem; }
}

@media (pointer: coarse) {
  .placement-option,
  .placement-intro__actions .btn,
  .placement-results__actions .btn,
  .placement-question__actions .btn { min-height: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  .placement-skip,
  .placement-method-grid a,
  .placement-option { transition: none; }
}