:root {
  --wordbook-ink: var(--ui-ink, #17233d);
  --wordbook-muted: var(--ui-muted, #667085);
  --wordbook-muted-strong: var(--ui-muted-strong, #526079);
  --wordbook-line: var(--ui-line, #e1e2ed);
  --wordbook-line-strong: var(--ui-line-strong, #cfd5e3);
  --wordbook-accent: var(--ui-accent, #6464c8);
  --wordbook-accent-dark: var(--ui-accent-dark, #4f4fa9);
  --wordbook-accent-soft: var(--ui-accent-soft, #eeeeff);
  --wordbook-success: var(--ui-success, #356b56);
  --wordbook-success-soft: var(--ui-success-soft, #e5f1eb);
  --wordbook-danger: var(--ui-danger, #9f4f4c);
  --wordbook-danger-soft: var(--ui-danger-soft, #f6e8e6);
  --wordbook-ease: var(--ui-ease, cubic-bezier(.23, 1, .32, 1));
}

.wordbook-shell {
  max-width: 1040px;
  padding-top: 28px;
  padding-bottom: 72px;
}

.wordbook-card,
.wordbook-card * {
  box-sizing: border-box;
}

.wordbook-card {
  overflow: hidden;
  border: 1px solid var(--wordbook-line);
  border-radius: 26px;
  background: var(--ui-surface, #fff);
  box-shadow: var(--ui-shadow-raised, 0 14px 34px rgba(55, 57, 105, .08));
}

.wordbook-card [hidden] {
  display: none !important;
}

.wordbook-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 38px 42px 30px;
  border-bottom: 1px solid var(--wordbook-line);
  background: radial-gradient(circle at 86% 14%, rgba(119, 119, 217, .14), transparent 28%), linear-gradient(135deg, #f8f8ff, #fff 76%);
}

.wordbook-kicker {
  margin-bottom: 6px;
  color: var(--wordbook-accent);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.wordbook-header h1 {
  margin: 0;
  color: var(--wordbook-ink);
  font-size: clamp(30px, 4vw, 42px);
  letter-spacing: -.045em;
  line-height: 1.1;
}

.wordbook-header p {
  max-width: 600px;
  margin: 12px 0 0;
  color: var(--wordbook-muted);
  font-size: 14px;
  line-height: 1.7;
}

.wordbook-back-link {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  min-height: 40px;
  padding: 8px 13px;
  border: 1px solid var(--wordbook-line-strong);
  border-radius: 12px;
  background: rgba(255, 255, 255, .84);
  color: var(--wordbook-accent-dark);
  font-size: 13px;
  font-weight: 850;
  text-decoration: none;
  transition: background-color 160ms ease, border-color 160ms ease, transform 160ms var(--wordbook-ease);
}

.wordbook-back-link:active,
.wordbook-primary-button:active,
.wordbook-secondary-button:active,
.wordbook-refresh-button:active,
.wordbook-speak-button:active,
.wordbook-master-button:active,
.wordbook-delete-button:active,
.wordbook-source-link:active {
  transform: scale(.97);
}

.wordbook-back-link:focus-visible,
.wordbook-primary-button:focus-visible,
.wordbook-secondary-button:focus-visible,
.wordbook-refresh-button:focus-visible,
.wordbook-speak-button:focus-visible,
.wordbook-master-button:focus-visible,
.wordbook-delete-button:focus-visible,
.wordbook-source-link:focus-visible,
.wordbook-control select:focus-visible,
.wordbook-source-summary:focus-visible {
  outline: 3px solid rgba(100, 100, 200, .25);
  outline-offset: 2px;
}

.wordbook-app {
  padding: 24px 42px 42px;
}

.wordbook-login-state {
  display: grid;
  justify-items: center;
  padding: 76px 24px 86px;
  text-align: center;
}

.wordbook-state-icon {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 14px;
  border-radius: 16px;
  background: var(--wordbook-accent-soft);
  color: var(--wordbook-accent-dark);
  font-size: 23px;
  font-weight: 900;
}

.wordbook-login-state h2 {
  margin: 0;
  color: var(--wordbook-ink);
  font-size: 21px;
  letter-spacing: -.02em;
}

.wordbook-login-state p {
  max-width: 420px;
  margin: 8px 0 20px;
  color: var(--wordbook-muted);
  font-size: 14px;
  line-height: 1.7;
}

.wordbook-primary-button,
.wordbook-secondary-button,
.wordbook-refresh-button,
.wordbook-speak-button,
.wordbook-master-button,
.wordbook-delete-button {
  cursor: pointer;
  font: inherit;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms var(--wordbook-ease), opacity 160ms ease;
}

.wordbook-primary-button {
  min-height: 42px;
  padding: 10px 17px;
  border: 1px solid var(--wordbook-accent);
  border-radius: 12px;
  background: var(--wordbook-accent);
  color: #fff;
  font-size: 14px;
  font-weight: 850;
}

.wordbook-controls {
  display: flex;
  align-items: end;
  gap: 12px;
  flex-wrap: wrap;
  padding: 16px;
  border: 1px solid #ececf5;
  border-radius: 16px;
  background: #fbfbff;
}

.wordbook-control {
  display: grid;
  gap: 5px;
  min-width: 146px;
  color: var(--wordbook-muted);
  font-size: 11px;
  font-weight: 850;
}

.wordbook-control select {
  min-height: 38px;
  padding: 7px 30px 7px 11px;
  border: 1px solid var(--wordbook-line);
  border-radius: 10px;
  background: #fff;
  color: var(--wordbook-ink);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 750;
}

.wordbook-sort-control {
  min-width: 154px;
}

.wordbook-refresh-button,
.wordbook-secondary-button {
  min-height: 38px;
  padding: 8px 13px;
  border: 1px solid var(--wordbook-line-strong);
  border-radius: 10px;
  background: #fff;
  color: var(--wordbook-accent-dark);
  font-size: 13px;
  font-weight: 850;
}

.wordbook-refresh-button {
  margin-left: auto;
}

.wordbook-summary {
  min-height: 21px;
  margin: 17px 2px 11px;
  color: var(--wordbook-muted);
  font-size: 13px;
  font-weight: 750;
}

.wordbook-state {
  display: grid;
  justify-items: center;
  gap: 8px;
  padding: 54px 20px;
  border: 1px dashed var(--wordbook-line-strong);
  border-radius: 17px;
  color: var(--wordbook-muted);
  font-size: 14px;
  line-height: 1.6;
  text-align: center;
}

.wordbook-state strong {
  color: var(--wordbook-ink);
  font-size: 16px;
}

.wordbook-state span {
  max-width: 500px;
}

.wordbook-loading-state {
  grid-template-columns: auto 1fr;
  justify-content: center;
  justify-items: start;
  align-items: center;
  border-style: solid;
  border-color: #ececf5;
  background: #fbfbff;
}

.wordbook-spinner {
  display: block;
  width: 18px;
  height: 18px;
  border: 2px solid #dcdcf3;
  border-top-color: var(--wordbook-accent);
  border-radius: 50%;
  animation: wordbook-spin 700ms linear infinite;
}

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

.wordbook-error-state {
  border-style: solid;
  border-color: #efd7d5;
  background: #fffafa;
  color: var(--wordbook-danger);
}

.wordbook-error-state strong {
  color: var(--wordbook-danger);
}

.wordbook-list {
  display: grid;
  gap: 12px;
}

.wordbook-entry-card {
  overflow: hidden;
  border: 1px solid var(--wordbook-line);
  border-radius: 17px;
  background: #fff;
  box-shadow: var(--ui-shadow-card, 0 3px 12px rgba(40, 42, 77, .045));
  scroll-margin-top: 24px;
  transition: border-color 160ms ease, box-shadow 160ms var(--wordbook-ease), transform 160ms var(--wordbook-ease);
}

.wordbook-entry-card.is-focused {
  border-color: #8e8edc;
  box-shadow: 0 0 0 3px rgba(100, 100, 200, .14), var(--ui-shadow-card, 0 3px 12px rgba(40, 42, 77, .045));
}

.wordbook-entry-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: start;
  padding: 18px 19px 14px;
}

.wordbook-entry-heading {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  min-width: 0;
}

.wordbook-entry-heading h2 {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--wordbook-ink);
  font-size: 22px;
  letter-spacing: -.025em;
  line-height: 1.2;
}

.wordbook-entry-phonetic {
  color: var(--wordbook-muted);
  font-size: 12px;
}

.wordbook-entry-pos {
  display: inline-flex;
  margin-top: 8px;
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--wordbook-accent-soft);
  color: var(--wordbook-accent-dark);
  font-size: 11px;
  font-weight: 850;
}

.wordbook-entry-meaning {
  margin: 9px 0 0;
  color: var(--wordbook-ink);
  font-size: 16px;
  font-weight: 850;
  line-height: 1.5;
}

.wordbook-entry-definitions {
  margin: 7px 0 0;
  padding-left: 18px;
  color: var(--wordbook-muted-strong);
  font-size: 12px;
  line-height: 1.6;
}

.wordbook-entry-meta {
  display: flex;
  justify-content: flex-end;
  gap: 7px;
  flex-wrap: wrap;
}

.wordbook-entry-date,
.wordbook-entry-type {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 4px 8px;
  border-radius: 999px;
  background: #f6f7fb;
  color: var(--wordbook-muted);
  font-size: 11px;
  font-weight: 750;
  white-space: nowrap;
}

.wordbook-entry-type {
  background: var(--wordbook-success-soft);
  color: var(--wordbook-success);
}

.wordbook-entry-example,
.wordbook-entry-sentence {
  margin: 0 19px 13px;
  padding: 10px 12px;
  border-left: 3px solid #d9d8f7;
  border-radius: 0 10px 10px 0;
  background: #fbfbff;
  color: var(--wordbook-muted-strong);
  font-size: 13px;
  line-height: 1.65;
}

.wordbook-entry-example em {
  font-style: italic;
}

.wordbook-entry-sentence {
  border-left-color: #c8ded2;
}

.wordbook-entry-label {
  display: block;
  margin-bottom: 3px;
  color: var(--wordbook-muted);
  font-size: 11px;
  font-weight: 850;
}

.wordbook-source-details {
  margin: 0 19px 14px;
  border-top: 1px solid #f0f1f6;
}

.wordbook-source-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 0 7px;
  color: var(--wordbook-muted-strong);
  cursor: pointer;
  font-size: 12px;
  font-weight: 850;
  list-style: none;
}

.wordbook-source-summary::-webkit-details-marker {
  display: none;
}

.wordbook-source-summary::after {
  content: '＋';
  color: var(--wordbook-accent);
  font-size: 16px;
  transition: transform 160ms var(--wordbook-ease);
}

.wordbook-source-details[open] .wordbook-source-summary::after {
  transform: rotate(45deg);
}

.wordbook-source-groups {
  display: grid;
  gap: 10px;
  padding-bottom: 3px;
}

.wordbook-source-group {
  overflow: hidden;
  border: 1px solid #ececf5;
  border-radius: 11px;
  background: #fcfcff;
}

.wordbook-source-group-title {
  padding: 8px 10px;
  border-bottom: 1px solid #ececf5;
  color: var(--wordbook-accent-dark);
  font-size: 11px;
  font-weight: 900;
}

.wordbook-source-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: start;
  padding: 9px 10px;
}

.wordbook-source-row + .wordbook-source-row {
  border-top: 1px solid #f0f1f6;
}

.wordbook-source-copy {
  min-width: 0;
  color: var(--wordbook-muted-strong);
  font-size: 12px;
  line-height: 1.55;
}

.wordbook-source-copy strong {
  display: block;
  overflow-wrap: anywhere;
  color: var(--wordbook-ink);
  font-size: 12px;
}

.wordbook-source-link {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 8px;
  border: 1px solid #d7d7f0;
  border-radius: 8px;
  color: var(--wordbook-accent-dark);
  font-size: 11px;
  font-weight: 850;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 160ms ease, border-color 160ms ease, transform 160ms var(--wordbook-ease);
}

.wordbook-entry-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 19px 15px;
  border-top: 1px solid #f0f1f6;
}

.wordbook-entry-last-seen {
  min-width: 0;
  color: var(--wordbook-muted);
  font-size: 11px;
}

.wordbook-entry-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.wordbook-master-button,
.wordbook-delete-button,
.wordbook-speak-button {
  min-height: 32px;
  padding: 6px 9px;
  border: 1px solid var(--wordbook-line);
  border-radius: 9px;
  background: #fff;
  color: var(--wordbook-muted-strong);
  font-size: 11px;
  font-weight: 850;
}

.wordbook-speak-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  min-height: 32px;
  padding: 5px;
  border-radius: 9px;
  font-size: 14px;
}

.wordbook-master-button.is-mastered {
  border-color: #b9d8c7;
  background: var(--wordbook-success-soft);
  color: var(--wordbook-success);
}


@media (hover: hover) and (pointer: fine) {
  .wordbook-back-link:hover {
    border-color: #bdbde8;
    background: #fff;
  }

  .wordbook-primary-button:hover {
    border-color: var(--wordbook-accent-dark);
    background: var(--wordbook-accent-dark);
  }

  .wordbook-refresh-button:hover,
  .wordbook-secondary-button:hover {
    border-color: #bdbde8;
    background: var(--wordbook-accent-soft);
  }

  .wordbook-source-link:hover {
    border-color: #bdbde8;
    background: var(--wordbook-accent-soft);
  }

  .wordbook-speak-button:hover {
    border-color: #bdbde8;
    background: var(--wordbook-accent-soft);
  }

  .wordbook-master-button:hover {
    border-color: #b9d8c7;
    background: var(--wordbook-success-soft);
    color: var(--wordbook-success);
  }

  .wordbook-delete-button:hover {
    border-color: #e3c4c0;
    background: var(--wordbook-danger-soft);
    color: var(--wordbook-danger);
  }
}

@media (max-width: 700px) {
  .wordbook-shell {
    padding: calc(var(--hang-nav-height, 66px) + 18px) 12px 56px;
  }

  .wordbook-card {
    border-radius: 21px;
  }

  .wordbook-header {
    display: block;
    padding: 27px 20px 23px;
  }

  .wordbook-header p {
    margin-top: 10px;
  }

  .wordbook-back-link {
    margin-top: 17px;
  }

  .wordbook-app {
    padding: 17px 14px 27px;
  }

  .wordbook-controls {
    align-items: stretch;
    gap: 9px;
    padding: 12px;
  }

  .wordbook-control,
  .wordbook-sort-control {
    min-width: calc(50% - 5px);
    flex: 1 1 calc(50% - 5px);
  }

  .wordbook-refresh-button {
    width: 100%;
    margin-left: 0;
  }

  .wordbook-entry-main {
    grid-template-columns: 1fr;
    gap: 9px;
    padding: 16px 15px 13px;
  }

  .wordbook-entry-meta {
    justify-content: flex-start;
  }

  .wordbook-entry-example,
  .wordbook-entry-sentence,
  .wordbook-source-details {
    margin-left: 15px;
    margin-right: 15px;
  }

  .wordbook-entry-footer {
    align-items: flex-start;
    flex-direction: column;
    padding-left: 15px;
    padding-right: 15px;
  }

  .wordbook-entry-actions {
    width: 100%;
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .wordbook-spinner {
    animation-duration: 1ms !important;
  }

  .wordbook-back-link,
  .wordbook-primary-button,
  .wordbook-secondary-button,
  .wordbook-refresh-button,
  .wordbook-master-button,
  .wordbook-delete-button,
  .wordbook-speak-button,
  .wordbook-source-link,
  .wordbook-entry-card,
  .wordbook-source-summary::after {
    transition-duration: 1ms !important;
  }
}