/* ── Variables ─────────────────────────────────────────── */
:root {
  --bg:        #0f0f1a;
  --surface:   #1a1a2e;
  --elevated:  #252540;
  --input-bg:  #252540;
  --bg-subtle: #20203a;
  --border:    #333355;

  --accent:    #e94560;
  --accent-dim:#b03348;
  --purple:    #7c5cbf;

  --success:   #4ecca3;
  --warning:   #f0a500;
  --error:     #e94560;

  --text:      #eeeeee;
  --text-dim:  #aaaacc;
  --text-mute: #666688;
  --text-muted:#666688;

  --radius:    10px;
  --radius-sm: 6px;
  --transition: 150ms ease;
}

/* ── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

/* ── Navigation ─────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0 1.5rem;
  height: 56px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  overflow-y: hidden;
}

.nav-brand {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--accent);
  white-space: nowrap;
}

.nav-links { display: flex; gap: 0.25rem; }

.nav-link {
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-dim);
  transition: background var(--transition), color var(--transition);
}

@media (hover: hover) {
  .nav-link:hover { background: var(--elevated); color: var(--text); }
}

.nav-link.active {
  background: var(--elevated);
  color: var(--text);
  font-weight: 600;
}

/* ── Main layout ───────────────────────────────────────── */
.main {
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.main.main-wide {
  max-width: 1300px;
}

/* ── Page header ───────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.page-title {
  font-size: 1.6rem;
  font-weight: 700;
}

/* ── Direction toggle ──────────────────────────────────── */
.direction-toggle {
  display: flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.toggle-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  padding: 0.5rem 1rem;
  cursor: pointer;
  font-size: 0.875rem;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}

.toggle-btn.active {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

@media (hover: hover) {
  .toggle-btn:not(.active):hover { background: var(--elevated); color: var(--text); }
}

/* ── Search input ──────────────────────────────────────── */
#dict-search-wrap { margin-bottom: 1rem; }

.search-input {
  width: 100%;
  padding: 0.6rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition);
}

.search-input:focus { border-color: var(--accent); }

/* ── Class filter ──────────────────────────────────────── */
#dict-class-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.class-filter-btn {
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-mute);
  font-size: 0.78rem;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.class-filter-btn.active[data-cls="pu"]         { background: #1a3a5c; color: #6eb5ff; border-color: #6eb5ff55; }
.class-filter-btn.active[data-cls="ku suli"]    { background: #2d1f4a; color: #b89aff; border-color: #b89aff55; }
.class-filter-btn.active[data-cls="compounds"]  { background: #3a1a2a; color: #f4a0c8; border-color: #f4a0c855; }
.class-filter-btn.active[data-cls="phrasebook"] { background: #1a3a2a; color: #6ed4a0; border-color: #6ed4a055; }

/* ── Word list ─────────────────────────────────────────── */
.word-list { display: flex; flex-direction: column; gap: 0.5rem; }

.word-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}

.word-card.open { border-color: var(--accent); }

.word-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

@media (hover: hover) {
  .word-card-header:hover { background: var(--elevated); }
}

.word-tp {
  font-size: 1.05rem;
  font-weight: 700;
  flex: 1;
}

.badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-pu         { background: #1a3a5c; color: #6eb5ff; }
.badge-ku-suli    { background: #2d1f4a; color: #b89aff; }
.badge-compounds  { background: #3a1a2a; color: #f4a0c8; }
.badge-phrasebook { background: #1a3a2a; color: #6ed4a0; }
.badge-sentences  { background: #3a2a1a; color: #f4a261; }

.word-preview {
  font-size: 0.82rem;
  color: var(--text-mute);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 220px;
}

.chevron {
  color: var(--text-mute);
  font-size: 0.8rem;
  transition: transform var(--transition);
}

.word-card.open .chevron { transform: rotate(180deg); }

.word-card-body {
  display: none;
  padding: 0 1rem 1rem;
  border-top: 1px solid var(--border);
}

.word-card.open .word-card-body { display: block; }

.meanings-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding-top: 0.75rem;
}

.meaning-item {
  font-size: 0.9rem;
  color: var(--text-dim);
  padding-left: 1rem;
  position: relative;
}

.meaning-item::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.meaning-item.is-particle { color: var(--text-mute); font-style: italic; }

/* en-tp view: English side on card header */
.word-en { font-size: 1.05rem; font-weight: 700; flex: 1; }
.word-en-sub { font-size: 0.85rem; color: var(--text-mute); }

/* ── Loading / empty ───────────────────────────────────── */
.loading { color: var(--text-mute); padding: 2rem; text-align: center; }
.empty   { color: var(--text-mute); padding: 2rem; text-align: center; }

/* ── Learn page ────────────────────────────────────────── */
.learn-section { max-width: 600px; margin: 0 auto; }

/* Setup */
.setup-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.resume-session-section {
  display: flex;
  align-items: center;
}

.resume-session-section[hidden],
.setup-separator[hidden] {
  display: none;
}

.resume-btn {
  min-width: 220px;
}

.setup-separator {
  height: 1px;
  width: 100%;
  background: var(--border);
}

.setup-group { display: flex; flex-direction: column; gap: 0.6rem; }

.setup-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-mute);
}

.radio-group { display: flex; flex-direction: column; gap: 0.5rem; }

.radio-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  cursor: pointer;
}

.radio-label input[type="radio"] { accent-color: var(--accent); width: 1rem; height: 1rem; }
.radio-label input[type="checkbox"] { accent-color: var(--accent); width: 1rem; height: 1rem; }

.radio-group-buttons {
  display: flex;
  flex-direction: row;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.radio-group-buttons .radio-label {
  flex: 1 1 64px;
  display: block;
}

.radio-group-buttons .radio-label input[type="radio"] {
  display: none;
}

.radio-group-buttons .radio-label span {
  display: block;
  padding: 0.6rem 0;
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.radio-group-buttons .radio-label input[type="radio"]:checked + span {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Category checkboxes (word-set picker) */
.category-checkboxes {
  display: flex;
  flex-direction: row;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.category-checkbox-label {
  display: block;
  cursor: pointer;
}

.category-checkbox-label input[type="checkbox"] { display: none; }

.category-checkbox-label span {
  display: block;
  padding: 0.6rem 0.75rem;
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
  white-space: nowrap;
}

.category-checkbox-label input[type="checkbox"]:checked + span {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

@media (hover: hover) {
  .category-checkbox-label input[type="checkbox"]:not(:checked) + span:hover {
    background: var(--border);
    color: var(--text);
  }
}

.radio-group-buttons .radio-label.disabled span {
  opacity: 0.35;
  cursor: not-allowed;
}

@media (hover: hover) {
  .radio-group-buttons .radio-label input[type="radio"]:not(:checked) + span:hover {
    background: var(--border);
    color: var(--text);
  }
}

.count-buttons { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.count-btn {
  flex: 1 1 64px;
  padding: 0.6rem 0;
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.count-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.quick-mode-btn {
  font-family: inherit;
}

@media (hover: hover) {
  .count-btn:not(.active):hover { background: var(--border); color: var(--text); }
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.5rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 44px;
  transition: background var(--transition);
}

@media (hover: hover) {
  .btn-primary:hover { background: var(--accent-dim); }
}

.btn-ghost {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}

@media (hover: hover) {
  .btn-ghost:hover { border-color: var(--text-mute); color: var(--text); }
}

.start-btn { align-self: flex-start; min-width: 140px; }

.error-msg {
  color: var(--error);
  font-size: 0.9rem;
  padding: 0.5rem 0;
}

/* Session progress */
.session-progress {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
}

.session-progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.45rem;
}

.session-progress-percent {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-dim);
}

.session-progress-track {
  width: 100%;
  height: 8px;
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.session-progress-fill {
  width: 0%;
  height: 100%;
  background: var(--accent);
  border-radius: 999px;
  transition: width var(--transition);
}

/* Feedback area */
.feedback-area {
  margin-bottom: 1.25rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  border-left: 4px solid transparent;
  background: var(--surface);
}

.feedback-area.grade-correct { border-left-color: var(--success); }
.feedback-area.grade-almost  { border-left-color: var(--warning); }
.feedback-area.grade-wrong   { border-left-color: var(--error);   }

.feedback-header {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
}

.grade-label {
  font-weight: 700;
  font-size: 0.95rem;
}

.grade-correct .grade-label { color: var(--success); }
.grade-almost  .grade-label { color: var(--warning); }
.grade-wrong   .grade-label { color: var(--error);   }

.feedback-answer { font-size: 0.88rem; color: var(--text-mute); }

.feedback-card {
  margin-top: 0.6rem;
  font-size: 0.88rem;
}

.feedback-tp { font-weight: 700; font-size: 1rem; margin-bottom: 0.3rem; }

.feedback-meanings {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.75rem;
  color: var(--text-dim);
}

.feedback-meanings li { position: relative; padding-left: 0.9rem; }
.feedback-meanings li::before { content: "·"; position: absolute; left: 0; color: var(--accent); }
.feedback-meanings li.is-particle { font-style: italic; color: var(--text-mute); }

/* Question card */
.question-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  text-align: center;
  margin-bottom: 1.25rem;
}

.question-direction {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-mute);
  margin-bottom: 0.6rem;
}

.question-prompt {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.2;
  word-break: break-word;
}

.question-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
  font-style: italic;
}

/* Answer row */
.answer-row {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.answer-input {
  flex: 1;
  padding: 0.7rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 1rem;
  min-height: 44px;
  outline: none;
  transition: border-color var(--transition);
}

.answer-input:focus { border-color: var(--accent); }

/* Summary */
.summary-overall {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.summary-stat { display: flex; flex-direction: column; gap: 0.2rem; }

.summary-stat-value {
  font-size: 1.8rem;
  font-weight: 700;
}

.summary-stat-label {
  font-size: 0.78rem;
  color: var(--text-mute);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.stat-correct { color: var(--success); }
.stat-almost  { color: var(--warning); }
.stat-wrong   { color: var(--error);   }
.stat-score   { color: var(--text);    }

.summary-table-wrap { overflow-x: auto; }

.summary-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.summary-table th,
.summary-table td {
  padding: 0.55rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.summary-table th {
  color: var(--text-mute);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.sortable-th {
  cursor: pointer;
  user-select: none;
  padding-right: 1rem;
}

@media (hover: hover) {
  .sortable-th:hover { color: var(--text-dim); }
}

.sortable-th.sorted-asc::after,
.sortable-th.sorted-desc::after {
  margin-left: 0.35rem;
  color: var(--text-dim);
}

.sortable-th.sorted-asc::after { content: "\25B2"; }
.sortable-th.sorted-desc::after { content: "\25BC"; }

.summary-table tr:last-child td { border-bottom: none; }

.score-100  { color: var(--success); font-weight: 700; }
.score-good { color: var(--success); }
.score-mid  { color: var(--warning); }
.score-bad  { color: var(--error);   }

/* ── Compartment visualization ─────────────────────────── */
.comp-viz {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.comp-box {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 0.6rem 0.5rem;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition), background var(--transition);
  min-width: 0;
}

.comp-box.jumpable {
  cursor: pointer;
}

.comp-box.jumpable:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, var(--surface));
}

.comp-box.active {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, var(--surface));
}

.comp-done {
  border-color: #2a4a3a;
}

.comp-done.active {
  border-color: var(--success);
  background: color-mix(in srgb, var(--success) 10%, var(--surface));
}

.comp-label {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-mute);
}

.comp-box.active .comp-label {
  color: var(--accent);
}

.comp-done.active .comp-label {
  color: var(--success);
}

.comp-count {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-dim);
  line-height: 1;
}

.comp-box.active .comp-count {
  color: var(--text);
}

.comp-arrow {
  color: var(--text-mute);
  font-size: 1rem;
  flex-shrink: 0;
}

/* ── Translation page ──────────────────────────────────── */
.translate-section { max-width: 720px; margin: 0 auto; }

.translate-direction-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.translate-lang-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-dim);
  min-width: 90px;
}

.translate-lang-label:last-child { text-align: right; flex: 1; }
.translate-lang-label:first-child { flex: 1; }

.translate-swap-btn {
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-size: 1.2rem;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  flex-shrink: 0;
}

@media (hover: hover) {
  .translate-swap-btn:hover {
    background: var(--border);
    color: var(--text);
    border-color: var(--accent);
  }
}

.translate-effort-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.translate-effort-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-mute);
  white-space: nowrap;
}

.translate-effort-btns {
  display: flex;
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.translate-effort-btn {
  background: none;
  border: none;
  color: var(--text-mute);
  padding: 0.3rem 0.75rem;
  font-size: 0.8rem;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.translate-effort-btn.active {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

@media (hover: hover) {
  .translate-effort-btn:not(.active):hover {
    background: var(--border);
    color: var(--text-dim);
  }
}

.translate-input-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.translate-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
  resize: vertical;
  outline: none;
  min-height: 100px;
  transition: border-color var(--transition);
  line-height: 1.5;
}

.translate-textarea:focus { border-color: var(--accent); }

.translate-submit-btn { align-self: flex-start; min-width: 130px; }

.translate-loading {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-mute);
  font-size: 0.95rem;
  padding: 0.5rem 0;
  margin-bottom: 0.5rem;
}

.translate-loading[hidden] { display: none; }

@keyframes spin { to { transform: rotate(360deg); } }

.translate-spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
  flex-shrink: 0;
}

.translate-result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 0.75rem;
}

.translate-result-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-mute);
  margin-bottom: 0.6rem;
}

.translate-result-text {
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  word-break: break-word;
}

.translate-alt-text { font-size: 1.1rem; font-weight: 600; }

.translate-result-comment {
  margin-top: 0.6rem;
  font-size: 0.88rem;
  color: var(--text-dim);
  font-style: italic;
  border-left: 2px solid var(--border);
  padding-left: 0.75rem;
}

.translate-alt-card {
  border-color: var(--elevated);
  background: var(--bg);
}

.translate-section-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-mute);
  margin: 1.25rem 0 0.6rem;
}

.translate-table-wrap { overflow-x: auto; }

.translate-vocab-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.translate-vocab-table th,
.translate-vocab-table td {
  padding: 0.55rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.translate-vocab-table th {
  color: var(--text-mute);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--elevated);
}

.translate-vocab-table tr:last-child td { border-bottom: none; }

.vocab-tp { font-weight: 700; }

.vocab-confidence {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

.vocab-confidence-verified { background: #1a3a2a; color: var(--success); }
.vocab-confidence-common   { background: #3a2e10; color: var(--warning); }
.vocab-confidence-adhoc    { background: var(--elevated); color: var(--text-mute); }

.translate-usage-corner {
  position: fixed;
  bottom: 0.75rem;
  right: 1rem;
  font-size: 0.68rem;
  color: var(--text-mute);
  opacity: 0.5;
  pointer-events: none;
  user-select: none;
}

.translate-usage-corner[hidden] { display: none; }

.usage-last { opacity: 0.6; }

/* ── Responsive ────────────────────────────────────────── */
@media (max-width: 600px) {
  .main { padding: 1.25rem 1rem 3rem; }

  .page-header { flex-direction: column; align-items: flex-start; }

  .direction-toggle { width: 100%; }
  .toggle-btn { flex: 1; }

  .word-preview { max-width: 120px; }

  .question-prompt { font-size: 1.8rem; }

  .answer-row { flex-direction: column; }
  .answer-input, .answer-row .btn-primary { width: 100%; }

  .start-btn { width: 100%; }

  .summary-overall { gap: 1rem; }
}