/* Words screens: flash cards, test, word list — in the old pages' paper-and-navy style. Tokens and components come from base.css. */

.vocab-badges { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.kbd-hint { color: var(--ink-soft); font-size: var(--step--1); }
@media (hover: none) { .kbd-hint { display: none; } }

/* ---------- cards ---------- */
.deck { display: grid; gap: var(--space-4); max-width: 36rem; }
.deck__status { display: flex; align-items: center; gap: var(--space-4); }
.deck__left { flex: 0 0 auto; font-weight: 600; font-variant-numeric: tabular-nums; }
.deck__meter { flex: 1 1 auto; }

.flashcard {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  border-radius: var(--radius-l);
  background: none;
  color: var(--ink);
  text-align: center;
  cursor: pointer;
  perspective: 1200px;
  -webkit-tap-highlight-color: transparent;
}
.flashcard__inner {
  display: grid;
  transform-style: preserve-3d;
  transition: transform 480ms cubic-bezier(0.3, 0.7, 0.2, 1);
}
.flashcard.is-flipped .flashcard__inner { transform: rotateY(180deg); }
.flashcard__face {
  grid-area: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  min-height: 15rem;
  padding: var(--space-6) var(--space-5) var(--space-5);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--surface);
  box-shadow: var(--shadow-lift);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  overflow-wrap: anywhere;
}
/* an amber edge on the Spanish side, teal on the answer side */
.flashcard__face--front { border-top: 4px solid var(--sun); }
.flashcard__face--back { transform: rotateY(180deg); border-top: 4px solid var(--ok); }
.flashcard:hover .flashcard__face { border-left-color: var(--heading); border-right-color: var(--heading); border-bottom-color: var(--heading); }

.flashcard__word {
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--heading);
  font-size: clamp(var(--step-2), 1rem + 4.5vw, var(--step-4));
  line-height: 1.1;
}
.flashcard__hint { color: var(--ink-soft); font-size: 0.9375rem; }
.flashcard__es { color: var(--ink-soft); font-weight: 600; }
.flashcard__tr {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--heading);
  font-size: clamp(var(--step-1), 0.9rem + 2.5vw, var(--step-3));
  letter-spacing: -0.01em;
  line-height: 1.2;
}
.flashcard__ex { margin-top: var(--space-2); max-width: 34ch; text-align: start; }

.deck__actions { display: grid; grid-template-columns: auto 1fr 1fr; gap: var(--space-3); }
.deck__btn { min-height: 52px; }
.deck__btn:disabled { opacity: 0.45; cursor: default; }

.deck-done {
  display: grid;
  justify-items: start;
  gap: var(--space-3);
  max-width: 40rem;
  padding: var(--space-5);
  border: 1.5px solid var(--ok);
  border-radius: var(--radius-l);
  background: var(--ok-soft);
}
.deck-done__mark {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-pill);
  background: var(--ok);
  color: var(--surface);
}
.deck-done__mark .icon { width: 1.6rem; height: 1.6rem; }
.deck-done__title { font-family: var(--font-display); font-weight: 900; font-size: var(--step-2); color: var(--heading); }
.deck-done__text { max-width: 52ch; }
.deck-done .btn-row { margin-top: var(--space-2); }

/* ---------- test ---------- */
.quiz { display: grid; gap: var(--space-4); max-width: 36rem; }
.quiz__status { display: flex; align-items: center; gap: var(--space-4); }
.quiz__count { flex: 0 0 auto; font-weight: 600; font-variant-numeric: tabular-nums; }
.quiz__meter { flex: 1 1 auto; }
.quiz__card {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-5);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  border-top: 4px solid var(--sun);
  background: var(--surface);
}
.quiz__ask { color: var(--ink-soft); font-weight: 500; }
.quiz__prompt {
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--heading);
  font-size: clamp(var(--step-2), 1rem + 3vw, var(--step-3));
  line-height: 1.15;
  overflow-wrap: anywhere;
}
.option { gap: var(--space-3); }
.option__key {
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--radius-s);
  background: var(--hero-bg);
  color: var(--hero-accent);
  font-size: var(--step--1);
  font-weight: 700;
}
.option__text { overflow-wrap: anywhere; }
.quiz__verdict { font-weight: 700; }
.quiz__explain { margin-top: var(--space-1); color: var(--ink-soft); font-weight: 400; }

.quiz-result { display: grid; gap: var(--space-4); max-width: 40rem; }
.quiz-result__top {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-5);
  border: 1px solid var(--line);
  border-top: 4px solid var(--hero-bg);
  border-radius: var(--radius-l);
  background: var(--surface);
}
.quiz-result.is-passed .quiz-result__top { border-color: var(--ok); border-top-color: var(--ok); background: var(--ok-soft); }
.quiz-result__title { display: grid; gap: var(--space-1); }
.quiz-result__label { font-family: var(--font-body); font-size: var(--step-0); font-weight: 600; color: var(--ink-soft); }
.quiz-result__score {
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--heading);
  font-size: clamp(var(--step-3), 1.2rem + 4vw, 3rem);
  letter-spacing: -0.03em;
  line-height: 1;
}
.quiz-result__best { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); color: var(--ink-soft); }
.quiz-result__sub { font-size: var(--step-1); }
.quiz-result__clean { color: var(--ink-soft); }
.mistakes { border-top: 1px solid var(--line); }
.mistake {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-2);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--line);
}
.mistake__q { font-weight: 600; }
.mistake__arrow { color: var(--ink-soft); }
.mistake__a { color: var(--ok); font-weight: 600; }

/* ---------- word list ---------- */
.word-list { display: grid; gap: var(--space-3); max-width: 48rem; }
.word-list__count { color: var(--ink-soft); }
.words-table td { vertical-align: middle; }
.words-table__es { font-weight: 600; color: var(--heading); }
.words-table__tr { color: var(--ink-soft); }
.words-table .words-table__mark { width: 1%; text-align: center; white-space: nowrap; }
.words-table td.words-table__mark { padding-block: 0; }
.learn-toggle {
  display: inline-grid;
  place-items: center;
  min-width: var(--tap);
  min-height: var(--tap);
  cursor: pointer;
}
.learn-toggle input { width: 1.375rem; height: 1.375rem; margin: 0; accent-color: var(--ok); cursor: pointer; }
.words-table tr.is-learned .words-table__es { color: var(--ok); }

@media (max-width: 420px) {
  .flashcard__face { min-height: 13rem; padding: var(--space-5) var(--space-4) var(--space-4); }
  .quiz__card, .quiz-result__top, .deck-done { padding: var(--space-4); }
  .words-table th, .words-table td { padding-inline: var(--space-2); }
  /* "Back" shows only its arrow; the label stays for screen readers */
  .deck__btn--back { position: relative; padding-inline: var(--space-4); }
  .deck__btn--back .deck__btn-label {
    position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
  }
}

/* No flip animation: the faces simply swap. */
@media (prefers-reduced-motion: reduce) {
  .flashcard__inner, .flashcard.is-flipped .flashcard__inner { transition: none; transform: none; }
  .flashcard__face--back { transform: none; }
  .flashcard:not(.is-flipped) .flashcard__face--back,
  .flashcard.is-flipped .flashcard__face--front { visibility: hidden; }
}