/* OPC eligibility quiz — BEM. Scoped to .quiz so it drops into any page. */

.quiz {
  --quiz-bg: #ffffff;
  --quiz-surface: #f6f7f9;
  --quiz-border: #dfe3e8;
  --quiz-text: #10151c;
  --quiz-muted: #5c6672;
  --quiz-accent: #b4232a;
  --quiz-accent-soft: #fdeceb;
  --quiz-positive: #12734a;
  --quiz-positive-soft: #e7f5ee;
  --quiz-caution: #8a5a00;
  --quiz-caution-soft: #fdf3e0;
  --quiz-radius: 10px;
  --quiz-gap: 1rem;
  --quiz-maxw: 42rem;

  box-sizing: border-box;
  padding: clamp(1.5rem, 4vw, 3.5rem) 1.25rem;
  background: var(--quiz-bg);
  color: var(--quiz-text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.55;
}

.quiz *,
.quiz *::before,
.quiz *::after { box-sizing: inherit; }

@media (prefers-color-scheme: dark) {
  .quiz {
    --quiz-bg: #10151c;
    --quiz-surface: #182029;
    --quiz-border: #2b3642;
    --quiz-text: #eef2f6;
    --quiz-muted: #9aa6b3;
    --quiz-accent: #ff6b6b;
    --quiz-accent-soft: #2a1a1c;
    --quiz-positive: #57d39b;
    --quiz-positive-soft: #14271f;
    --quiz-caution: #e0b060;
    --quiz-caution-soft: #2a2317;
  }
}

.quiz__inner {
  max-width: var(--quiz-maxw);
  margin-inline: auto;
}

/* ─── Stage / panels ─── */

.quiz__stage {
  border: 1px solid var(--quiz-border);
  border-radius: var(--quiz-radius);
  background: var(--quiz-surface);
  padding: clamp(1.25rem, 3vw, 2rem);
}

/* Programmatic focus targets for screen readers: reachable by script, never by Tab,
   so they take no focus ring of their own. */
.quiz__panel:focus,
.quiz__legend:focus {
  outline: none;
}

.quiz__panel-title {
  margin: 0 0 0.75rem;
  font-size: 1.125rem;
}

.quiz__list {
  margin: 0 0 1.25rem;
  padding-left: 1.1rem;
  color: var(--quiz-muted);
}

.quiz__list-item { margin-bottom: 0.35rem; }

.quiz__note {
  margin: 0 0 1.5rem;
  padding: 0.85rem 1rem;
  border-left: 3px solid var(--quiz-accent);
  background: var(--quiz-accent-soft);
  border-radius: 0 6px 6px 0;
  font-size: 0.9375rem;
  color: var(--quiz-text);
}

/* ─── Progress ─── */

.quiz__progress { margin-bottom: 1.75rem; }

.quiz__progress-track {
  height: 5px;
  border-radius: 999px;
  background: var(--quiz-border);
  overflow: hidden;
}

.quiz__progress-bar {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: var(--quiz-accent);
  transition: width 220ms ease;
}

.quiz__progress-label {
  margin: 0.5rem 0 0;
  font-size: 0.8125rem;
  color: var(--quiz-muted);
}

/* ─── Steps ─── */

.quiz__steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.quiz__step[hidden] { display: none; }

.quiz__fieldset {
  margin: 0;
  padding: 0;
  border: 0;
  min-inline-size: 0;
}

.quiz__legend {
  padding: 0;
  margin-bottom: 0.4rem;
  font-size: 1.25rem;
  font-weight: 650;
  line-height: 1.3;
}

.quiz__hint {
  margin: 0 0 1.1rem;
  font-size: 0.9375rem;
  color: var(--quiz-muted);
}

.quiz__options {
  display: grid;
  gap: 0.5rem;
}

/* A secondary set of options qualifying/overriding the primary set above (e.g. the
   HSK step's "no certificate" / "can't speak Chinese" escapes). */
.quiz__options--secondary {
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--quiz-border);
}

.quiz__option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--quiz-border);
  border-radius: 8px;
  background: var(--quiz-bg);
  cursor: pointer;
  transition: border-color 120ms ease, background 120ms ease;
}

.quiz__option:hover { border-color: var(--quiz-accent); }

.quiz__option:has(.quiz__control:checked) {
  border-color: var(--quiz-accent);
  background: var(--quiz-accent-soft);
}

.quiz__option:has(.quiz__control:focus-visible) {
  outline: 2px solid var(--quiz-accent);
  outline-offset: 2px;
}

.quiz__control {
  accent-color: var(--quiz-accent);
  width: 1.15rem;
  height: 1.15rem;
  flex: none;
  margin: 0;
}

.quiz__option-text { font-size: 1rem; }

/* ─── Combobox ─── */

.quiz__combobox { position: relative; }

.quiz__input,
.quiz__textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--quiz-border);
  border-radius: 8px;
  background: var(--quiz-bg);
  color: var(--quiz-text);
  font: inherit;
}

.quiz__input:focus-visible,
.quiz__textarea:focus-visible {
  outline: 2px solid var(--quiz-accent);
  outline-offset: 1px;
  border-color: var(--quiz-accent);
}

.quiz__textarea { resize: vertical; }

.quiz__listbox {
  position: absolute;
  z-index: 20;
  inset-inline: 0;
  top: calc(100% + 4px);
  max-height: 17rem;
  overflow-y: auto;
  margin: 0;
  padding: 0.25rem;
  list-style: none;
  border: 1px solid var(--quiz-border);
  border-radius: 8px;
  background: var(--quiz-bg);
  box-shadow: 0 12px 28px rgb(0 0 0 / 0.14);
}

.quiz__listbox[hidden] { display: none; }

.quiz__listbox-option {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.55rem 0.7rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9375rem;
}

.quiz__listbox-option--active,
.quiz__listbox-option:hover { background: var(--quiz-accent-soft); }

.quiz__listbox-option--special {
  border-top: 1px solid var(--quiz-border);
  margin-top: 0.25rem;
  padding-top: 0.65rem;
  color: var(--quiz-muted);
  font-style: italic;
}

.quiz__listbox-option mark {
  background: transparent;
  color: var(--quiz-accent);
  font-weight: 700;
}

.quiz__listbox-meta {
  flex: none;
  font-size: 0.8125rem;
  color: var(--quiz-muted);
}

.quiz__selection {
  margin: 0.6rem 0 0;
  font-size: 0.9375rem;
  color: var(--quiz-positive);
  font-weight: 600;
}

.quiz__selection[hidden] { display: none; }

/* ─── Navigation ─── */

.quiz__nav {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.quiz__button {
  appearance: none;
  padding: 0.75rem 1.4rem;
  border-radius: 8px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 120ms ease, background 120ms ease;
}

.quiz__button:focus-visible {
  outline: 2px solid var(--quiz-accent);
  outline-offset: 2px;
}

.quiz__button--primary {
  background: var(--quiz-accent);
  color: #fff;
  margin-left: auto;
}

.quiz__button--primary:hover:not(:disabled) { opacity: 0.9; }

.quiz__button--primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.quiz__button--ghost {
  background: transparent;
  border-color: var(--quiz-border);
  color: var(--quiz-muted);
}

.quiz__button--ghost:hover { border-color: var(--quiz-accent); color: var(--quiz-accent); }

.quiz__button--ghost[hidden] { display: none; }

/* ─── Verdict ─── */

.quiz__verdict { display: block; }

.quiz__verdict-badge {
  display: inline-block;
  margin: 0 0 0.75rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.quiz__verdict--strong .quiz__verdict-badge,
.quiz__verdict--eligible .quiz__verdict-badge {
  background: var(--quiz-positive-soft);
  color: var(--quiz-positive);
}

.quiz__verdict--review .quiz__verdict-badge {
  background: var(--quiz-caution-soft);
  color: var(--quiz-caution);
}

.quiz__verdict-title {
  margin: 0 0 0.6rem;
  font-size: clamp(1.25rem, 3.2vw, 1.6rem);
  line-height: 1.25;
}

.quiz__verdict-body {
  margin: 0 0 1rem;
  color: var(--quiz-muted);
}

.quiz__reasons {
  margin: 0 0 1.5rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.6rem;
}

.quiz__reasons[hidden] { display: none; }

.quiz__reason {
  padding: 0.75rem 0.9rem;
  border-radius: 8px;
  background: var(--quiz-caution-soft);
  border-left: 3px solid var(--quiz-caution);
  font-size: 0.9375rem;
}

.quiz__reason-title {
  display: block;
  font-weight: 650;
  margin-bottom: 0.15rem;
}

/* ─── Capture ─── */

.quiz__capture {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--quiz-border);
  display: grid;
  gap: 0.9rem;
}

.quiz__capture[hidden] { display: none; }

.quiz__capture-title { margin: 0; font-size: 1.0625rem; }

.quiz__capture-body { margin: -0.4rem 0 0; color: var(--quiz-muted); font-size: 0.9375rem; }

.quiz__field { display: grid; gap: 0.35rem; }

.quiz__field--reveal { margin-top: 1rem; }
.quiz__field--reveal[hidden] { display: none; }

.quiz__label { font-size: 0.875rem; font-weight: 600; }

.quiz__optional { font-weight: 400; color: var(--quiz-muted); }

.quiz__capture .quiz__button--primary { margin-left: 0; justify-self: start; }

.form-honeypot {
  position: absolute;
  left: -100vw;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.captcha-field {
  display: flex;
  min-height: 4.875rem;
  align-items: center;
  overflow: hidden;
}

.captcha-field .cf-turnstile { max-width: 100%; }

.quiz__error {
  margin: 0;
  color: var(--quiz-accent);
  font-size: 0.875rem;
}

.quiz__error[hidden] { display: none; }

.quiz__thanks {
  margin: 1.5rem 0 0;
  padding: 1rem;
  border-radius: 8px;
  background: var(--quiz-positive-soft);
  color: var(--quiz-positive);
  font-weight: 600;
}

.quiz__thanks[hidden] { display: none; }

.quiz__panel[data-panel="verdict"] > .quiz__button--ghost { margin-top: 1.5rem; }

/* ─── a11y ─── */

.quiz__announcer {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.quiz__panel[hidden],
.quiz__form[hidden] { display: none; }

@media (prefers-reduced-motion: reduce) {
  .quiz * { transition-duration: 1ms !important; }
}