/* Vocabulary view switcher and inline practice, scoped to this component. */
.vocabulary-card {
  --vocabulary-gold: #c59a42;
  --vocabulary-gold-text: #78591e;
  --vocabulary-border: var(--line);
  border-color: var(--vocabulary-border);
  border-top-color: var(--vocabulary-gold);
}

.vocabulary-card > .vocabulary-header {
  border-bottom-color: var(--vocabulary-border);
}

@media screen {
  :root[data-theme="dark"] .vocabulary-card {
    --vocabulary-gold: var(--theme-gold);
    --vocabulary-gold-text: var(--theme-gold);
    --vocabulary-border: color-mix(in srgb, var(--theme-gold) 26%, var(--theme-border));
  }
}

@media screen and (prefers-color-scheme: dark) {
  :root:not([data-theme]) .vocabulary-card {
    --vocabulary-gold: var(--theme-gold);
    --vocabulary-gold-text: var(--theme-gold);
    --vocabulary-border: color-mix(in srgb, var(--theme-gold) 26%, var(--theme-border));
  }
}

.vocabulary-header__topline {
  flex-wrap: wrap;
}

.vocabulary-view-switcher {
  display: inline-flex;
  flex: 0 1 auto;
  align-items: stretch;
  gap: 0.2rem;
  max-width: 100%;
  padding: 0.25rem;
  border: 1px solid var(--vocabulary-gold);
  border-radius: 0.9rem;
  background: color-mix(in srgb, var(--vocabulary-gold) 8%, var(--card));
}

.vocabulary-view-button {
  display: inline-flex;
  flex: 1 1 0;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 2.75rem;
  padding: 0.6rem 0.85rem;
  border: 1px solid transparent;
  border-radius: 0.65rem;
  color: var(--vocabulary-gold-text);
  background: transparent;
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  touch-action: manipulation;
  transition: color 160ms ease, background-color 160ms ease;
}

.vocabulary-view-icon {
  display: block;
  flex: 0 0 auto;
  width: 1.125rem;
  height: 1.125rem;
}

.vocabulary-view-button:hover {
  color: var(--vocabulary-gold-text);
  background: color-mix(in srgb, var(--vocabulary-gold) 18%, var(--card));
}

.vocabulary-view-button[aria-pressed="true"] {
  color: #281d0b;
  background: var(--vocabulary-gold);
}

.vocabulary-card .vocabulary-view-switcher .vocabulary-view-button:focus-visible {
  outline-color: var(--vocabulary-gold-text);
}

.vocabulary-show-more {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  min-height: 3.25rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--vocabulary-gold);
  border-radius: 0.75rem;
  color: var(--vocabulary-gold-text);
  background: color-mix(in srgb, var(--vocabulary-gold) 8%, var(--card));
  font: 700 0.9rem/1.4 var(--sans);
  cursor: pointer;
  touch-action: manipulation;
}

.vocabulary-show-more:hover {
  background: color-mix(in srgb, var(--vocabulary-gold) 18%, var(--card));
}

.vocabulary-card .vocabulary-show-more[type="button"]:focus-visible {
  outline: 3px solid var(--vocabulary-gold-text);
  outline-offset: -4px;
}

.vocabulary-table .vocabulary-list-more td {
  padding: 0;
  border-bottom: 0;
}

.vocabulary-table-wrap[data-vocabulary-list-limit] {
  container-type: inline-size;
}

.vocabulary-list-more .vocabulary-show-more {
  position: sticky;
  left: 0;
  width: 100cqw;
  border: 0;
  border-radius: 0;
}

.vocabulary-grid-more-item {
  grid-column: 1 / -1;
}

.vocabulary-table tbody tr[hidden],
.vocabulary-list-more[hidden],
.vocabulary-picture-card[hidden],
.vocabulary-grid-more-item[hidden] {
  display: none !important;
}

.vocabulary-practice-next,
.vocabulary-practice-more,
.vocabulary-practice-restart,
.vocabulary-practice-finish {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.75rem;
  padding: 0.6rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  color: var(--accent-deep);
  background: var(--card);
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  cursor: pointer;
  touch-action: manipulation;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.vocabulary-practice-finish:hover {
  border-color: var(--accent-deep);
  background: var(--paper-light);
  background: color-mix(in srgb, var(--accent) 10%, var(--card));
}

.vocabulary-practice-panel {
  box-sizing: border-box;
  width: 100%;
  max-width: 43rem;
  margin-inline: auto;
  padding: clamp(1.25rem, 4vw, 2rem) clamp(1rem, 4vw, 1.5rem) 2rem;
  color: var(--ink);
  font-family: var(--sans);
}

.vocabulary-practice-kicker {
  margin: 0 0 0.3rem;
  color: var(--accent-deep);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.5;
  text-transform: uppercase;
}

.vocabulary-practice-progress {
  display: grid;
  gap: 0.55rem;
  margin-bottom: 1.5rem;
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.4;
}

.vocabulary-practice-progress label,
.vocabulary-practice-progress p {
  margin: 0;
}

.vocabulary-practice-progress progress {
  display: block;
  width: 100%;
  height: 0.4rem;
  overflow: hidden;
  border: 0;
  border-radius: 1rem;
  background: var(--line);
  color: var(--accent-deep);
  accent-color: var(--accent-deep);
  appearance: none;
}

.vocabulary-practice-progress progress::-webkit-progress-bar {
  border-radius: 1rem;
  background: var(--line);
}

.vocabulary-practice-progress progress::-webkit-progress-value {
  border-radius: 1rem;
  background: var(--accent-deep);
}

.vocabulary-practice-progress progress::-moz-progress-bar {
  border-radius: 1rem;
  background: var(--accent-deep);
}

.vocabulary-practice-question {
  position: relative;
  isolation: isolate;
}

.vocabulary-practice-question > .vocabulary-practice-kicker {
  text-align: center;
}

.vocabulary-practice-prompt {
  margin: 0 0 0.55rem;
  color: var(--ink-soft);
  font-size: 0.88rem;
  line-height: 1.6;
  text-align: center;
}

.vocabulary-practice-word {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: fit-content;
  max-width: 100%;
  margin: 0 auto 1.25rem;
  padding: 0.45rem 0.55rem;
  border-radius: 0.65rem;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.75rem, 6vw, 2.65rem);
  font-weight: 500;
  line-height: 1.9;
  text-align: center;
  overflow-wrap: anywhere;
}

.vocabulary-practice-word h3 {
  margin: 0;
  color: inherit;
  font: inherit;
}

.vocabulary-practice-word rt {
  color: var(--ink-soft);
  font-size: 0.4em;
  font-weight: 400;
}

.vocabulary-practice-word button {
  flex-shrink: 0;
}

.vocabulary-practice-speaker-slot {
  display: inline-flex;
  align-items: center;
  line-height: 1;
}

.vocabulary-practice-options {
  display: grid;
  gap: 0.65rem;
}

.vocabulary-practice-option {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  min-height: 3.35rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  color: var(--ink);
  background: var(--paper-light);
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.5;
  text-align: left;
  overflow-wrap: anywhere;
  cursor: pointer;
  touch-action: manipulation;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.vocabulary-practice-option:not([aria-disabled="true"]):not(:disabled):hover {
  border-color: var(--accent-deep);
  background: color-mix(in srgb, var(--accent) 10%, var(--card));
}

.vocabulary-practice-option[aria-disabled="true"],
.vocabulary-practice-option:disabled {
  opacity: 1;
  cursor: default;
}

.vocabulary-practice-letter {
  flex: 0 0 auto;
  min-width: 0.9rem;
  color: var(--ink-soft);
  font-size: 0.75rem;
  font-weight: 700;
}

.vocabulary-practice-option__label {
  flex: 1;
  min-width: 0;
}

/* Once a word is answered, the right answer turns green, a wrong pick turns
   red, and the other choice fades, as in the reading quizzes. */
.vocabulary-practice-question.is-answered .vocabulary-practice-option:not(.is-correct):not(.is-incorrect) {
  opacity: 0.6;
}

.vocabulary-practice-option.is-correct,
.vocabulary-practice-option.is-correct:hover {
  border-color: var(--theme-green, #496759);
  background: var(--theme-green-soft, #e8eee5);
  box-shadow: inset 0 0 0 1px var(--theme-green, #496759);
}

.vocabulary-practice-option.is-incorrect,
.vocabulary-practice-option.is-incorrect:hover {
  border-color: var(--theme-red, #984632);
  background: var(--theme-red-soft, #f2e1da);
  box-shadow: inset 0 0 0 1px var(--theme-red, #984632);
}

.vocabulary-practice-option.is-correct::after,
.vocabulary-practice-option.is-incorrect::after {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  color: var(--theme-on-accent, #fff);
  font-size: 0.8rem;
  font-weight: 800;
  line-height: 1;
}

.vocabulary-practice-option.is-correct::after {
  content: "✓";
  background: var(--theme-green, #496759);
}

.vocabulary-practice-option.is-incorrect::after {
  content: "✕";
  background: var(--theme-red, #984632);
}

.vocabulary-practice-option.is-celebrating {
  animation: vocabulary-practice-pop 520ms cubic-bezier(0.3, 1.6, 0.5, 1);
}

.vocabulary-practice-option.is-celebrating::after {
  animation: vocabulary-practice-badge 520ms 80ms cubic-bezier(0.3, 1.8, 0.5, 1) both;
}

.vocabulary-practice-feedback {
  margin: 0;
  color: var(--ink);
  font-size: 0.92rem;
  line-height: 1.55;
}

.vocabulary-practice-feedback.is-correct,
.vocabulary-practice-feedback.is-incorrect {
  margin-top: 1rem;
  padding: 0.7rem 0.85rem;
  border-left: 3px solid var(--theme-green, #496759);
  border-radius: 0.5rem;
  color: var(--theme-green, #496759);
  background: var(--theme-green-soft, #e8eee5);
  animation: vocabulary-practice-step-in 260ms ease-out both;
}

.vocabulary-practice-feedback.is-incorrect {
  border-left-color: var(--theme-red, #984632);
  color: var(--theme-red, #984632);
  background: var(--theme-red-soft, #f2e1da);
}

.vocabulary-practice-feedback__title {
  display: block;
  font-size: 0.95rem;
}

.vocabulary-practice-feedback.is-correct .vocabulary-practice-feedback__title [lang="ja"] {
  display: inline-block;
  animation: vocabulary-practice-cheer 700ms 120ms ease-out both;
}

.vocabulary-practice-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.vocabulary-practice-explanation {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 0.85rem;
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  color: var(--ink-soft);
  background: var(--paper-light);
  font-size: 0.86rem;
  line-height: 1.7;
}

.vocabulary-practice-explanation > div {
  flex: 1;
  min-width: 0;
}

.vocabulary-practice-explanation p {
  margin: 0;
}

.vocabulary-practice-explanation p + p {
  margin-top: 0.5rem;
}

.vocabulary-practice-image {
  display: block;
  flex: 0 0 auto;
  width: clamp(4.5rem, 18vw, 6.875rem);
  max-width: 110px;
  height: auto;
  aspect-ratio: 1;
  object-fit: contain;
  border-radius: 0.6rem;
  background: #fffaf0;
}

.vocabulary-practice-next,
.vocabulary-practice-more,
.vocabulary-practice-restart {
  border-color: var(--accent-deep);
  color: var(--theme-on-accent, #fff);
  background: var(--accent-deep);
}

.vocabulary-practice-next {
  width: 100%;
  margin-top: 1rem;
}

.vocabulary-practice-next:disabled {
  opacity: 0.45;
  cursor: default;
  margin-bottom: 100px;
}

.vocabulary-practice-next:not(:disabled):hover,
.vocabulary-practice-more:hover,
.vocabulary-practice-restart:hover {
  border-color: var(--accent);
  background: var(--accent-deep);
  background: color-mix(in srgb, var(--accent-deep) 88%, var(--ink));
}

.vocabulary-practice-panel :is(button, [tabindex]):focus-visible,
.vocabulary-view-button:focus-visible {
  outline: 3px solid var(--theme-focus, var(--accent-deep));
  outline-offset: 3px;
}

.vocabulary-practice-completion {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 1.25rem 0.75rem 0.75rem;
  border-radius: 0.9rem;
  text-align: center;
}

.vocabulary-practice-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 5rem;
  height: 5rem;
  margin: 0 auto 1.1rem;
  border: 1px solid var(--accent);
  border-radius: 50%;
  color: var(--theme-gold, #896823);
  background: var(--theme-green-soft, #e8eee5);
  box-shadow: 0 0 0 0.45rem var(--paper-light);
  font-size: 2.5rem;
  line-height: 1;
}

.vocabulary-practice-completion h3 {
  margin: 0.35rem 0 0.75rem;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.7rem, 5vw, 2.2rem);
  font-weight: 500;
  line-height: 1.25;
}

.vocabulary-practice-completion > p {
  max-width: 29rem;
  margin: 0.65rem auto;
  color: var(--ink-soft);
  font-size: 0.94rem;
  line-height: 1.75;
}

.vocabulary-practice-completion > .vocabulary-practice-kicker {
  color: var(--accent-deep);
  font-size: 0.72rem;
  line-height: 1.5;
}

.vocabulary-practice-completion h3 {
  color: var(--ink-soft);
}

.vocabulary-practice-completion h3 strong {
  color: var(--ink);
  font-size: 1.4em;
  font-weight: 600;
}

.vocabulary-practice-completion.is-perfect h3 strong {
  display: inline-block;
  color: var(--theme-green, #496759);
  animation: vocabulary-practice-pop 600ms cubic-bezier(0.3, 1.6, 0.5, 1);
}

/* Confetti burst from the middle of a correct choice. */
.vocabulary-practice-burst {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  pointer-events: none;
}

.vocabulary-practice-burst span {
  position: absolute;
  top: -4px;
  left: -3px;
  width: 6px;
  height: 9px;
  border-radius: 2px;
  opacity: 0;
  animation: vocabulary-practice-burst 900ms var(--delay, 0ms) cubic-bezier(0.2, 0.7, 0.4, 1) forwards;
}

.vocabulary-practice-burst span.is-round {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.vocabulary-practice-actions,
.vocabulary-practice-completion-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem;
  margin-top: 1.4rem;
}

.vocabulary-practice-confetti {
  position: absolute;
  z-index: 2;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.vocabulary-practice-confetti span:nth-child(3n + 1) {
  background: var(--theme-gold, #896823);
}

.vocabulary-practice-confetti span:nth-child(3n + 2) {
  background: var(--theme-red, #984632);
}

.vocabulary-practice-confetti span {
  --confetti-drift: 1.2rem;
  position: absolute;
  top: -1rem;
  left: calc((var(--piece-index, 0) + 0.5) * 4.1667%);
  width: 0.4rem;
  height: 0.8rem;
  border-radius: 0.08rem;
  opacity: 0;
  background: var(--accent-deep);
}

.vocabulary-practice-confetti span:nth-child(even) {
  --confetti-drift: -1.2rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
}

.vocabulary-practice-completion.is-celebrating .vocabulary-practice-confetti span {
  animation: vocabulary-practice-confetti-fall 1450ms ease-out both;
  animation-delay: calc(var(--piece-index, 0) * 22ms);
}

.vocabulary-practice-completion.is-celebrating .vocabulary-practice-badge {
  animation: vocabulary-practice-badge-pop 650ms cubic-bezier(0.2, 0.8, 0.3, 1.15) both;
}

@keyframes vocabulary-practice-step-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

@keyframes vocabulary-practice-pop {
  0% { transform: scale(1); }
  40% { transform: scale(1.04); }
  100% { transform: scale(1); }
}

@keyframes vocabulary-practice-badge {
  from { transform: scale(0) rotate(-30deg); }
  to { transform: scale(1) rotate(0); }
}

@keyframes vocabulary-practice-cheer {
  0% { transform: scale(0.6); opacity: 0; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(1); }
}

@keyframes vocabulary-practice-burst {
  0% { opacity: 1; transform: translate(0, 0) rotate(0) scale(0.6); }
  70% { opacity: 1; }
  100% { opacity: 0; transform: translate(var(--dx), calc(var(--dy) + 26px)) rotate(var(--spin)) scale(1); }
}

@keyframes vocabulary-practice-confetti-fall {
  0% { opacity: 0; transform: translate(0, -0.5rem) rotate(0deg); }
  12% { opacity: 0.9; }
  75% { opacity: 0.75; }
  100% { opacity: 0; transform: translate(var(--confetti-drift), 22rem) rotate(430deg); }
}

@keyframes vocabulary-practice-badge-pop {
  0% { opacity: 0; transform: scale(0.7) rotate(-12deg); }
  65% { opacity: 1; transform: scale(1.08) rotate(4deg); }
  100% { opacity: 1; transform: scale(1) rotate(0); }
}

@media (max-width: 34rem) {
  .vocabulary-view-switcher {
    width: 100%;
  }

  .vocabulary-view-button {
    padding-inline: 0.5rem;
    font-size: 0.8rem;
  }

  .vocabulary-practice-progress {
    margin-bottom: 1.15rem;
  }

  .vocabulary-practice-option {
    padding: 0.75rem 0.8rem;
    font-size: 0.9rem;
  }

  .vocabulary-practice-explanation {
    align-items: flex-start;
    gap: 0.7rem;
    padding: 0.7rem;
    font-size: 0.82rem;
  }

  .vocabulary-practice-completion {
    padding-inline: 0;
  }
}

@media (max-width: 26rem) {
  .vocabulary-view-button {
    flex-direction: column;
    gap: 0.2rem;
    padding: 0.45rem 0.25rem;
  }
}

@media (max-width: 22rem) {
  .vocabulary-view-button {
    font-size: 0.75rem;
    white-space: normal;
  }

  .vocabulary-practice-explanation {
    flex-direction: column;
  }

  .vocabulary-practice-actions,
  .vocabulary-practice-completion-actions {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .vocabulary-practice-panel *,
  .vocabulary-practice-panel *::before,
  .vocabulary-practice-panel *::after,
  .vocabulary-view-button {
    animation: none !important;
    transition: none !important;
  }

  .vocabulary-practice-confetti {
    display: none;
  }
}

/* Component display rules must never reveal inactive steps or controls. */
.vocabulary-practice-panel[hidden],
.vocabulary-practice-panel [hidden],
.vocabulary-section .vocabulary-scroll-hint[hidden],
.vocabulary-view-switcher[hidden] {
  display: none !important;
}

@media print {
  .vocabulary-table tbody tr[hidden] {
    display: table-row !important;
  }

  .vocabulary-list-more,
  .vocabulary-view-switcher,
  .vocabulary-practice-panel {
    display: none !important;
  }
}