.errorbook-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Stats bar ===== */
.eb-stats {
  background: var(--card);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) var(--space-xl);
  display: flex;
  gap: var(--space-xl);
}

.eb-stat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: var(--space-sm) 0;
  min-width: 56px;
}

.eb-stat-num {
  font-family: var(--font-en);
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--ink);
  line-height: 1;
}

.eb-stat-num.danger { color: var(--danger); }

.eb-stat-label {
  font-family: var(--font-cn);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== Mode tabs — underline style ===== */
.eb-mode-tabs {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
}

.eb-mode-tab {
  padding: 14px var(--space-lg);
  border: none;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-cn);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  position: relative;
  transition: color var(--transition-fast);
}

.eb-mode-tab::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0; right: 0;
  height: 2px;
  background: var(--navy);
  transform: scaleX(0);
  transition: transform var(--transition-fast);
}

.eb-mode-tab.is-active {
  color: var(--navy);
  font-weight: 700;
}

.eb-mode-tab.is-active::after { transform: scaleX(1); }

.eb-mode-tab:not(.is-active):hover { color: var(--ink); }

/* ===== Filter tabs ===== */
.eb-filters {
  max-width: 780px;
  margin: var(--space-md) auto 0;
  padding: 0 var(--space-xl);
  display: flex;
  gap: var(--space-sm);
}

.eb-filter-btn {
  border: none;
  background: transparent;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 500;
  font-family: var(--font-cn);
  color: var(--muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.eb-filter-btn.is-active {
  background: var(--navy-pale);
  color: var(--navy);
  font-weight: 700;
}

.eb-filter-btn:not(.is-active):hover { color: var(--ink); }

/* ===== Word list ===== */
.eb-main {
  flex: 1;
  max-width: 780px;
  width: 100%;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-xl) var(--space-3xl);
}

.eb-empty {
  text-align: center;
  padding: var(--space-3xl) 0;
  color: var(--muted);
}

.eb-empty-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: var(--space-md);
}

.eb-empty-text {
  font-family: var(--font-cn);
  font-size: 0.9rem;
  font-weight: 500;
}

/* ===== Error word card — list row style ===== */
.eb-word-card {
  background: var(--card);
  padding: var(--space-lg) var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-fast);
}

.eb-word-card:first-child { border-top: 1px solid var(--color-border); }

.eb-word-card:hover { background: var(--paper); }

.eb-word-card.is-mastered { opacity: 0.5; }

.eb-word-card.is-mastered .eb-word-en {
  text-decoration: line-through;
  color: var(--muted);
}

.eb-word-body { flex: 1; min-width: 0; }

.eb-word-en {
  font-family: var(--font-en);
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 2px;
}

.eb-word-phonetic {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 4px;
}

.eb-word-meaning {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.eb-review-info {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-xs);
  flex-wrap: wrap;
}

.eb-review-stage,
.eb-review-date {
  font-size: 0.7rem;
  color: var(--muted);
  font-weight: 400;
}

.eb-review-today {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--navy);
  background: var(--navy-pale);
  border-radius: var(--radius-full);
  padding: 1px 7px;
}

.eb-review-info.is-due .eb-review-stage,
.eb-review-info.is-due .eb-review-date { color: var(--navy); }

.eb-word-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.eb-error-badge {
  background: var(--danger-pale);
  color: var(--danger);
  padding: 2px 9px;
  border-radius: var(--radius-full);
  font-family: var(--font-cn);
  font-size: 0.72rem;
  font-weight: 600;
  white-space: nowrap;
}

.eb-mastered-badge {
  background: var(--primary-pale);
  color: var(--primary-hover);
  padding: 2px 9px;
  border-radius: var(--radius-full);
  font-family: var(--font-cn);
  font-size: 0.72rem;
  font-weight: 600;
}

.eb-word-actions {
  display: flex;
  gap: var(--space-xs);
  flex-shrink: 0;
}

.eb-action-btn {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.eb-action-btn:hover {
  background: var(--paper-alt);
  color: var(--ink);
}

.eb-action-btn.master-btn.is-mastered {
  color: var(--primary);
}

.eb-action-btn.delete-btn:hover {
  background: var(--danger-pale);
  color: var(--danger);
}

/* ===== Toast ===== */
.eb-toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--ink);
  color: var(--paper);
  padding: 9px 22px;
  border-radius: var(--radius-full);
  font-family: var(--font-cn);
  font-size: 0.85rem;
  font-weight: 500;
  opacity: 0;
  transition: all 0.28s ease;
  pointer-events: none;
  white-space: nowrap;
  z-index: 200;
}

.eb-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}