.main-content {
  min-height: calc(100vh - var(--header-height));
  min-height: calc(100svh - var(--header-height));
}

.sentences-page {
  min-height: auto;
  padding: 14px 0 26px;
  background:
    linear-gradient(180deg, rgba(255, 248, 242, 0.74) 0%, rgba(247, 249, 251, 0.88) 48%, #ffffff 100%),
    var(--bg);
}

.sentences-console {
  width: min(100% - 32px, 1040px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.sentence-study-area {
  width: min(100%, 740px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-content: start;
  justify-self: center;
  border: 1px solid rgba(220, 231, 238, 0.9);
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow:
    0 30px 80px rgba(42, 53, 66, 0.12),
    0 8px 24px rgba(255, 106, 0, 0.045);
  overflow: hidden;
}

.sentence-study-area > * {
  min-width: 0;
  max-width: 100%;
}

.sentence-mobile-utility-nav,
.sentence-mobile-utility-panel {
  display: none;
}

.sentence-course-summary {
  width: 100%;
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(220, 231, 238, 0.9);
}

.sentence-round-progress {
  width: 100%;
  height: 4px;
  flex: 0 0 100%;
  overflow: hidden;
  border-radius: 999px;
  background: #edf1f4;
}

.sentence-round-progress > span {
  width: 0;
  height: 100%;
  display: block;
  border-radius: inherit;
  background: linear-gradient(90deg, #ff8a3d, var(--primary));
  transition: width 220ms ease;
}

.sentence-course-summary-copy {
  min-width: 0;
  display: flex;
  align-items: baseline;
  gap: 8px;
  overflow: hidden;
  white-space: nowrap;
}

.sentence-course-summary-copy > strong {
  max-width: min(42vw, 320px);
  overflow: hidden;
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.25;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sentence-course-summary-meta {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.2;
  font-weight: 720;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.sentence-course-summary-actions {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sentence-settings-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.sentence-settings-actions a {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 14px;
  border: 1px solid rgba(255, 106, 0, 0.28);
  border-radius: 14px;
  background: #fff7ed;
  color: var(--primary-dark);
  font-size: 0.92rem;
  font-weight: 800;
  text-decoration: none;
}

.sentence-settings-actions a:hover,
.sentence-settings-actions a:focus-visible {
  border-color: rgba(255, 106, 0, 0.44);
  background: #fff2e4;
  outline: none;
}

.sentence-course-header-toggle {
  width: 32px;
  height: 32px;
  min-height: 32px;
  display: grid;
  place-items: center;
  flex: 0 0 32px;
  padding: 0;
  border: 1px solid rgba(220, 231, 238, 0.96);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  cursor: pointer;
}

.sentence-course-header-toggle {
  display: none;
}

.sentence-course-header-toggle:hover,
.sentence-course-header-toggle:focus-visible {
  border-color: rgba(255, 106, 0, 0.38);
  background: #fff8f2;
  color: var(--primary-dark);
  outline: none;
}

.sentence-course-header-toggle span,
.sentence-course-header-toggle span::before {
  width: 8px;
  height: 8px;
  display: block;
}

.sentence-course-header-toggle span::before {
  content: "";
  box-sizing: border-box;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform 200ms ease;
}

.sentence-course-header-toggle[aria-expanded="true"] span::before {
  transform: translateY(2px) rotate(225deg);
}

.sentence-course-details[hidden] {
  display: none;
}

.sentence-course-details {
  width: 100%;
  display: grid;
  gap: 10px;
  padding: 16px;
  border-bottom: 1px solid rgba(220, 231, 238, 0.9);
  background: rgba(251, 252, 253, 0.86);
}

.sentences-course-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
  gap: 18px;
  align-items: center;
}

.sentences-kicker {
  width: max-content;
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  margin: 0 0 8px;
  padding: 0 10px;
  border: 1px solid rgba(255, 106, 0, 0.2);
  border-radius: 999px;
  background: #fff7f0;
  color: var(--primary-dark);
  font-size: 0.82rem;
  font-weight: 780;
}

.sentences-course-header h1 {
  margin: 0;
  color: #18202a;
  font-size: clamp(1.62rem, 3vw, 2.08rem);
  line-height: 1.16;
  font-weight: 780;
}

.sentences-course-header p:last-child {
  margin: 8px 0 0;
  color: var(--muted);
}

.sentences-course-progress {
  padding: 16px 18px;
  border: 1px solid rgba(220, 231, 238, 0.9);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 12px 32px rgba(7, 19, 29, 0.07);
}

.sentences-course-progress > span {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 720;
}

.sentences-course-progress > strong {
  display: block;
  margin: 2px 0 9px;
  color: var(--ink);
  font-size: 1.08rem;
}

.sentences-course-progress > div {
  height: 7px;
  overflow: hidden;
  border-radius: 999px;
  background: #edf1f4;
}

.sentences-course-progress i {
  width: 0;
  height: 100%;
  display: block;
  border-radius: inherit;
  background: var(--primary);
  transition: width 220ms ease;
}

.sentence-batch-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 14px;
  border: 1px solid rgba(220, 231, 238, 0.9);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.9);
}

.sentence-batch-toolbar > span {
  flex: 0 0 auto;
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-weight: 760;
}

.sentence-audio-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 14px;
  border: 1px solid rgba(220, 231, 238, 0.9);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.9);
}

.sentence-audio-toolbar > span {
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-weight: 760;
}

.sentence-batch-options {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 7px;
}

.sentence-batch-options button {
  min-width: 58px;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid #cbd5e1;
  border-radius: 999px;
  background: #ffffff;
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 760;
}

.sentence-batch-options button:hover,
.sentence-batch-options button:focus-visible {
  border-color: var(--primary);
  outline: none;
}

.sentence-batch-options button[aria-pressed="true"] {
  border-color: var(--primary);
  background: #fff3e8;
  color: var(--primary-dark);
  box-shadow: 0 0 0 3px rgba(255, 106, 0, 0.1);
}

.sentence-card {
  width: 100%;
  min-height: 390px;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 22px;
  padding: clamp(28px, 5vw, 48px) clamp(24px, 5vw, 44px) 28px;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  outline: none;
  text-align: center;
}

.sentence-card > * {
  width: 100%;
}

.sentence-card:focus-visible {
  outline: 3px solid rgba(255, 106, 0, 0.18);
  outline-offset: -6px;
}

.sentence-visual {
  width: min(100%, 280px);
  aspect-ratio: 1;
  margin: -2px auto 0;
  overflow: hidden;
  border: 1px solid rgba(220, 231, 238, 0.92);
  border-radius: 24px;
  background: #f8fafb;
}

.sentence-visual img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.sentence-visual.is-placeholder {
  border-color: rgba(238, 226, 211, 0.94);
  background: #fffdf9;
}

.sentence-audio-button {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 44px;
  padding: 0;
  border: 1px solid rgba(255, 106, 0, 0.92);
  border-radius: 50%;
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 12px 24px rgba(255, 106, 0, 0.18);
}

.sentence-source-row {
  display: block;
}

.sentence-source-row .sentence-source {
  width: 100%;
  min-width: 0;
}

.sentence-translation-row {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.sentence-audio-icon {
  width: 22px;
  height: 22px;
  display: block;
  overflow: visible;
}

.sentence-audio-icon-body {
  fill: currentColor;
}

.sentence-audio-icon-wave {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.sentence-audio-button:hover,
.sentence-audio-button:focus-visible,
.sentence-audio-button.is-playing {
  background: var(--primary-dark);
  outline: none;
  transform: translateY(-1px);
}

.sentence-auto-audio-toggle {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 12px;
  border: 1px solid rgba(220, 231, 238, 0.94);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 760;
}

.sentence-auto-audio-toggle .sentence-audio-icon {
  width: 18px;
  height: 18px;
}

.sentence-auto-audio-toggle.is-on {
  border-color: rgba(255, 106, 0, 0.3);
  background: #fff4e8;
  color: #c95000;
  box-shadow: 0 10px 20px rgba(255, 106, 0, 0.1);
}

.sentence-auto-audio-toggle:hover,
.sentence-auto-audio-toggle:focus-visible {
  border-color: rgba(255, 106, 0, 0.32);
  color: var(--primary-dark);
  outline: none;
}

.sentence-source {
  margin: 0;
  color: #17202a;
  font-size: 2.125rem;
  line-height: 1.42;
  font-weight: 720;
  letter-spacing: -0.018em;
}

.sentence-source.is-short {
  font-size: 2.5rem;
}

.sentence-source.is-medium {
  font-size: 2.125rem;
}

.sentence-source.is-long {
  font-size: 1.8125rem;
}

.sentence-annotated-sentence {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: center;
  gap: 16px clamp(12px, 1.5vw, 18px);
  font-size: clamp(1.5rem, 3vw, 1.85rem);
}

.sentence-annotated-part {
  min-width: 0;
  max-width: 100%;
  display: inline-grid;
  grid-template-columns: minmax(0, 1fr);
  justify-items: center;
  gap: 5px;
  padding: 3px 4px 5px;
  border-radius: 10px;
  color: var(--ink);
  cursor: pointer;
  outline: none;
  transition: background 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.sentence-annotated-part:hover,
.sentence-annotated-part:focus-visible,
.sentence-annotated-part.is-active {
  background: rgba(248, 250, 252, 0.92);
  box-shadow: 0 0 0 3px rgba(148, 163, 184, 0.13);
  transform: translateY(-1px);
}

.sentence-annotated-text {
  max-width: 100%;
  color: currentColor;
  line-height: 1.28;
  overflow-wrap: anywhere;
}

.sentence-annotated-underline {
  width: 100%;
  height: 3px;
  display: block;
  border-radius: 999px;
  background: currentColor;
  opacity: 0.72;
}

.sentence-annotated-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  color: currentColor;
  font-size: 0.72rem;
  font-weight: 760;
  letter-spacing: 0;
  white-space: nowrap;
}

.sentence-annotated-label .sentence-icon {
  width: 15px;
  height: 15px;
  flex: 0 0 15px;
}

.sentence-annotated-part.is-subject {
  color: #5a8fce;
}

.sentence-annotated-part.is-predicate,
.sentence-annotated-part.is-verb {
  color: #ce7332;
}

.sentence-annotated-part.is-object {
  color: #4f9465;
}

.sentence-annotated-part.is-complement {
  color: #3d8b83;
}

.sentence-annotated-part.is-adjunct,
.sentence-annotated-part.is-time,
.sentence-annotated-part.is-place,
.sentence-annotated-part.is-purpose {
  color: #7561b8;
}

.sentence-annotated-part.has-icon-time {
  color: #5c72ad;
}

.sentence-annotated-part.has-icon-purpose {
  color: #a45b80;
}

.sentence-annotated-part.is-marker {
  color: #64748b;
}

.sentence-unannotated-text {
  align-self: flex-start;
  color: var(--ink);
}

.sentence-linked-word {
  padding: 0 0.08em;
  border-radius: 0.22em;
  background: linear-gradient(180deg, transparent 58%, rgba(255, 211, 77, 0.62) 58%);
  color: inherit;
}

.sentence-translation {
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1.02rem, 2vw, 1.22rem);
  line-height: 1.7;
}

.sentence-guess-blank {
  min-width: 3.2em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0 0.08em;
  padding: 0 0.24em 0.08em;
  border-bottom: 3px solid #6d5bd0;
  color: #6d5bd0;
  letter-spacing: 0.12em;
}

.sentence-guess-unavailable {
  margin: -6px 0 0;
  padding: 10px 12px;
  border: 1px dashed #cbd5e1;
  border-radius: 12px;
  background: #f8fafc;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

.sentence-guess {
  display: grid;
  gap: 12px;
  padding: 16px;
  border: 1px solid #ddd6fe;
  border-radius: 16px;
  background: #faf8ff;
}

.sentence-guess > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.55;
}

.sentence-guess-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 9px;
}

.sentence-guess-option {
  min-height: 46px;
  padding: 8px 12px;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  background: #ffffff;
  color: var(--ink);
  font-weight: 760;
}

.sentence-guess-option:hover:not(:disabled),
.sentence-guess-option:focus-visible {
  border-color: #6d5bd0;
  outline: none;
  box-shadow: 0 0 0 3px rgba(109, 91, 208, 0.14);
}

.sentence-guess-option.is-wrong {
  border-color: #f2a7a0;
  background: #fff5f4;
  color: #b42318;
}

.sentence-guess-option.is-correct {
  border-color: #86c89a;
  background: #effaf2;
  color: #23723b;
}

.sentence-guess-feedback.is-correct {
  color: #23723b;
}

.sentence-guess-feedback.is-wrong {
  color: #b42318;
}

.sentence-structure-note {
  display: grid;
  gap: 8px;
  padding: 16px;
  border: 1px solid rgba(109, 91, 208, 0.2);
  border-radius: 14px;
  background: rgba(109, 91, 208, 0.06);
  color: var(--ink-soft);
}

.sentence-structure-pattern {
  margin: 0;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 760;
  line-height: 1.55;
}

.sentence-structure-note-label {
  width: fit-content;
  padding: 4px 9px;
  border-radius: 999px;
  background: rgba(109, 91, 208, 0.12);
  color: #5143a5;
  font-size: 0.72rem;
  font-weight: 820;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.sentence-structure-note-message,
.sentence-structure-note-focus,
.sentence-structure-note-explanation {
  margin: 0;
  line-height: 1.55;
}

.sentence-structure-note-focus code {
  padding: 2px 7px;
  border-radius: 7px;
  background: #ffffff;
  color: #5143a5;
  font: inherit;
  font-weight: 820;
}

.sentence-structure-note-explanation {
  display: none;
}

.sentence-structure-explanation {
  display: none;
  max-width: 240px;
  padding: 6px 8px 0;
  border-top: 1px solid currentColor;
  color: var(--ink-soft);
  font-size: 0.76rem;
  line-height: 1.5;
  text-align: center;
}

.sentence-annotated-part[aria-expanded="true"] {
  min-width: min(220px, 100%);
}

.sentence-annotated-part[aria-expanded="true"] .sentence-structure-explanation {
  display: block;
}

.sentence-navigation {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-areas: "previous next";
  align-items: center;
  gap: 14px;
  padding: 0 clamp(24px, 5vw, 44px) 28px;
}

.sentence-navigation button:first-of-type {
  grid-area: previous;
}

.sentence-navigation button:last-of-type {
  grid-area: next;
}

.sentence-navigation button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 16px;
  border: 1px solid rgba(220, 231, 238, 0.94);
  border-radius: 14px;
  background: #f8fafc;
  color: rgba(38, 52, 46, 0.7);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 780;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.sentence-navigation [data-sentence-icon-slot] {
  width: 18px;
  height: 18px;
  display: inline-flex;
  flex: 0 0 18px;
}

.sentence-navigation .sentence-icon {
  width: 100%;
  height: 100%;
}

.sentence-navigation [data-sentence-nav-label] {
  min-width: 0;
}

.sentence-navigation button.secondary {
  background: #ffffff;
  color: var(--ink-soft);
}

.sentence-navigation button:hover:not(:disabled),
.sentence-navigation button:focus-visible {
  border-color: rgba(255, 106, 0, 0.32);
  outline: none;
  transform: translateY(-1px);
}

.sentence-navigation button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.sentences-status {
  min-height: 24px;
  color: var(--muted);
  text-align: center;
  font-size: 0.9rem;
}

.sentences-status.is-error {
  color: #b42318;
}

.sentence-utility-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0;
}

.sentence-utility-actions button {
  min-height: 38px;
  padding: 0 15px;
  border: 1px solid rgba(220, 231, 238, 0.94);
  border-radius: 999px;
  background: #ffffff;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.84rem;
  font-weight: 760;
  transition: border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.sentence-utility-actions button:hover,
.sentence-utility-actions button:focus-visible {
  border-color: rgba(255, 106, 0, 0.36);
  color: var(--primary-dark);
  outline: none;
  transform: translateY(-1px);
}

.sentence-footer-tools {
  width: min(100% - 32px, 740px);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  padding: 16px 0 14px;
}

.sentence-content-issue-modal[hidden],
.sentence-content-issue-toast[hidden] {
  display: none !important;
}

@media (min-width: 721px) {
  .sentence-card {
    min-height: 0;
    align-content: start;
    gap: 16px;
    padding-top: 20px;
  }

  .sentence-visual,
  .sentence-visual.is-placeholder {
    width: min(100%, 248px);
    margin-top: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
  }

  .sentence-mobile-utility-nav {
    width: min(calc(100% - 88px), 760px);
    min-height: 66px;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    align-items: stretch;
    justify-self: center;
    gap: 6px;
    margin: 0 44px 28px;
    padding: 6px;
    border: 1px solid rgba(220, 231, 238, 0.94);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 14px 30px rgba(42, 53, 66, 0.08);
  }

  .sentence-mobile-utility-nav > a,
  .sentence-mobile-utility-nav > button {
    min-width: 0;
    min-height: 52px;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 4px;
    padding: 4px;
    border: 0;
    border-radius: 12px;
    background: transparent;
    color: #6b778c;
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 760;
    text-decoration: none;
  }

  .sentence-mobile-utility-nav > button.is-active,
  .sentence-mobile-utility-nav > a:focus-visible,
  .sentence-mobile-utility-nav > button:focus-visible {
    background: #fff4e8;
    color: var(--primary-dark);
    outline: none;
  }

  .sentence-mobile-utility-nav [data-sentence-icon-slot] {
    width: 21px;
    height: 21px;
    display: inline-flex;
  }

  .sentence-mobile-utility-nav .sentence-icon {
    width: 100%;
    height: 100%;
  }

  .sentence-mobile-utility-panel:not([hidden]) {
    width: min(calc(100% - 88px), 760px);
    display: grid;
    justify-self: center;
    gap: 10px;
    margin: -16px 44px 28px;
    padding: 14px;
    border: 1px solid rgba(220, 231, 238, 0.94);
    border-radius: 16px;
    background: #fbfcfd;
  }

  .sentence-mobile-utility-panel[data-sentence-mobile-panel="mode"] {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sentence-mobile-utility-panel[data-sentence-mobile-panel="mode"] > button {
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 12px;
    border: 1px solid rgba(220, 231, 238, 0.94);
    border-radius: 14px;
    background: #ffffff;
    color: var(--ink-soft);
    font-weight: 780;
  }

  .sentence-mobile-utility-panel[data-sentence-mobile-panel="mode"] > button.is-active {
    border-color: rgba(255, 106, 0, 0.3);
    background: #fff4e8;
    color: var(--primary-dark);
  }

  .sentence-mobile-utility-panel[data-sentence-mobile-panel="mode"] [data-sentence-icon-slot] {
    width: 21px;
    height: 21px;
    display: inline-flex;
  }

  .sentence-mobile-utility-panel[data-sentence-mobile-panel="mode"] .sentence-icon {
    width: 100%;
    height: 100%;
  }

  .sentence-mobile-utility-panel .sentence-course-details {
    display: grid;
    padding: 0;
    border: 0;
    background: transparent;
  }

  .sentence-mobile-utility-panel .sentence-utility-actions {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
  }

  .sentence-footer-tools {
    display: none;
  }
}

.sentence-content-issue-modal {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: grid;
  place-items: center;
  padding: 20px;
}

.sentence-content-issue-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.46);
  backdrop-filter: blur(4px);
}

.sentence-content-issue-panel {
  position: relative;
  width: min(100%, 620px);
  max-height: min(88dvh, 760px);
  overflow-y: auto;
  padding: 22px;
  border: 1px solid rgba(220, 231, 238, 0.96);
  border-radius: 20px;
  background: #ffffff;
  box-shadow: 0 28px 70px rgba(15, 23, 42, 0.2);
}

.sentence-content-issue-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.sentence-content-issue-head div {
  display: grid;
  gap: 3px;
}

.sentence-content-issue-head span,
.sentence-content-issue-current small,
.sentence-content-issue-current span,
.sentence-content-issue-intro {
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.5;
}

.sentence-content-issue-head h2 {
  margin: 0;
  color: var(--ink);
  font-size: 1.35rem;
}

.sentence-content-issue-head > button {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  border: 1px solid rgba(220, 231, 238, 0.96);
  border-radius: 50%;
  background: #ffffff;
  color: var(--muted);
  cursor: pointer;
  font-size: 1.25rem;
}

.sentence-content-issue-current {
  display: grid;
  gap: 4px;
  margin: 16px 0 10px;
  padding: 14px 0;
  border-block: 1px solid rgba(220, 231, 238, 0.82);
}

.sentence-content-issue-current strong {
  color: var(--ink);
  font-size: 1.05rem;
  line-height: 1.45;
}

.sentence-content-issue-panel form {
  display: grid;
  gap: 14px;
}

.sentence-content-issue-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  border: 0;
}

.sentence-content-issue-option {
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 11px;
  border: 1px solid rgba(220, 231, 238, 0.96);
  border-radius: 10px;
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 0.86rem;
}

.sentence-content-issue-option:has(input:checked) {
  border-color: rgba(255, 106, 0, 0.48);
  background: #fff8f2;
  color: var(--primary-dark);
}

.sentence-content-issue-option input {
  margin: 0;
  accent-color: var(--primary);
}

.sentence-content-issue-description {
  display: grid;
  gap: 6px;
  color: var(--ink-soft);
  font-size: 0.86rem;
  font-weight: 760;
}

.sentence-content-issue-description textarea {
  width: 100%;
  min-height: 84px;
  resize: vertical;
  padding: 10px 12px;
  border: 1px solid rgba(220, 231, 238, 0.96);
  border-radius: 10px;
  color: var(--ink);
  font: inherit;
  line-height: 1.5;
}

.sentence-content-issue-description textarea:focus {
  border-color: rgba(255, 106, 0, 0.48);
  outline: 3px solid rgba(255, 106, 0, 0.1);
}

.sentence-content-issue-status {
  min-height: 20px;
  margin: 0;
  color: #b43f36;
  font-size: 0.84rem;
}

.sentence-content-issue-submit {
  min-height: 44px;
  border: 1px solid var(--primary);
  border-radius: 10px;
  background: var(--primary);
  color: #ffffff;
  cursor: pointer;
  font: inherit;
  font-weight: 820;
}

.sentence-content-issue-submit:disabled {
  cursor: wait;
  opacity: 0.6;
}

.sentence-content-issue-toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 1300;
  transform: translateX(-50%);
  max-width: min(90vw, 520px);
  padding: 11px 16px;
  border-radius: 999px;
  background: #16251e;
  color: #ffffff;
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.22);
  font-size: 0.88rem;
  font-weight: 760;
}

.sentences-page + .sentence-footer-tools,
.site-footer {
  border-top-color: rgba(15, 23, 42, 0.06);
  background: rgba(251, 252, 253, 0.72);
}

.sentence-loading,
.sentence-empty {
  color: var(--muted);
  text-align: center;
}

@media (max-width: 720px) {
  body.learning-page .site-footer[data-vlingo-footer] {
    display: none;
  }

  .sentences-page {
    padding-top: 12px;
  }

  .sentences-course-header {
    grid-template-columns: 1fr;
  }

  .sentence-course-summary {
    align-items: flex-start;
    flex-wrap: wrap;
    padding: 12px 14px;
  }

  .sentence-round-progress {
    order: 3;
  }

  .sentence-course-summary-copy {
    width: 100%;
    display: grid;
    gap: 4px;
  }

  .sentence-course-summary-copy > strong {
    max-width: 100%;
  }

  .sentence-course-summary-actions {
    margin-left: auto;
    justify-content: flex-end;
  }

  .sentence-course-details {
    padding: 14px;
  }

  .sentences-course-progress {
    padding: 12px 14px;
  }

  .sentence-card {
    min-height: 0;
    align-content: start;
    gap: 14px;
    padding: 16px 22px 22px;
    border-radius: 22px;
  }

  .sentence-source.is-short {
    font-size: 2rem;
  }

  .sentence-source.is-medium {
    font-size: 1.75rem;
  }

  .sentence-source.is-long {
    font-size: 1.5rem;
  }

  .sentence-batch-toolbar,
  .sentence-audio-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .sentence-auto-audio-toggle {
    width: 100%;
  }

  .sentence-batch-options {
    width: 100%;
    justify-content: flex-start;
  }

  .sentence-batch-options button {
    flex: 1 1 56px;
    padding-inline: 8px;
  }

  .sentence-audio-button {
    justify-content: center;
  }

  .sentence-annotated-sentence {
    gap: 14px 12px;
  }

  .sentence-visual {
    width: min(100%, 204px);
    margin-top: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
  }

  .sentence-annotated-part {
    flex: 0 1 auto;
    padding-inline: 2px;
  }

  .sentence-annotated-label {
    font-size: 0.68rem;
  }

  .sentence-audio-button {
    width: 42px;
    height: 42px;
    min-width: 42px;
    flex-basis: 42px;
    padding: 0;
  }

  .sentence-navigation {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    padding: 0 22px 24px;
  }

  .sentence-navigation button {
    min-height: 46px;
    gap: 5px;
    padding-inline: 4px;
    font-size: 0.78rem;
  }

  .sentence-navigation [data-sentence-icon-slot] {
    width: 14px;
    height: 14px;
    flex-basis: 14px;
  }

  .sentence-navigation [data-sentence-nav-label] {
    white-space: nowrap;
  }

  .sentence-mobile-utility-nav {
    min-height: 66px;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    align-items: stretch;
    gap: 4px;
    margin: 0 22px 22px;
    padding: 6px;
    border: 1px solid rgba(220, 231, 238, 0.94);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 14px 30px rgba(42, 53, 66, 0.08);
  }

  .sentence-mobile-utility-nav > a,
  .sentence-mobile-utility-nav > button {
    min-width: 0;
    min-height: 52px;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 4px;
    padding: 4px;
    border: 0;
    border-radius: 12px;
    background: transparent;
    color: #6b778c;
    cursor: pointer;
    font-size: 0.74rem;
    font-weight: 760;
    text-decoration: none;
  }

  .sentence-mobile-utility-nav > button.is-active,
  .sentence-mobile-utility-nav > a:focus-visible,
  .sentence-mobile-utility-nav > button:focus-visible {
    background: #fff4e8;
    color: var(--primary-dark);
    outline: none;
  }

  .sentence-mobile-utility-nav [data-sentence-icon-slot] {
    width: 22px;
    height: 22px;
    display: inline-flex;
  }

  .sentence-mobile-utility-nav .sentence-icon {
    width: 100%;
    height: 100%;
  }

  .sentence-mobile-utility-panel:not([hidden]) {
    display: grid;
    gap: 10px;
    margin: -12px 22px 22px;
    padding: 12px;
    border: 1px solid rgba(220, 231, 238, 0.94);
    border-radius: 16px;
    background: #fbfcfd;
  }

  .sentence-mobile-utility-panel[data-sentence-mobile-panel="mode"] {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sentence-mobile-utility-panel[data-sentence-mobile-panel="mode"] > button {
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 10px;
    border: 1px solid rgba(220, 231, 238, 0.94);
    border-radius: 14px;
    background: #ffffff;
    color: var(--ink-soft);
    font-weight: 780;
  }

  .sentence-mobile-utility-panel[data-sentence-mobile-panel="mode"] > button.is-active {
    border-color: rgba(255, 106, 0, 0.3);
    background: #fff4e8;
    color: var(--primary-dark);
  }

  .sentence-mobile-utility-panel[data-sentence-mobile-panel="mode"] [data-sentence-icon-slot] {
    width: 22px;
    height: 22px;
    display: inline-flex;
  }

  .sentence-mobile-utility-panel[data-sentence-mobile-panel="mode"] .sentence-icon {
    width: 100%;
    height: 100%;
  }

  .sentence-mobile-utility-panel .sentence-course-details {
    display: grid;
    padding: 0;
    border: 0;
    background: transparent;
  }

  .sentence-mobile-utility-panel .sentence-utility-actions {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }

  .sentence-mobile-utility-panel .sentence-utility-actions button {
    min-height: 46px;
    padding: 0 8px;
    border-radius: 12px;
    font-size: 0.78rem;
  }

  .sentence-footer-tools {
    display: none;
  }

  .sentence-content-issue-options {
    grid-template-columns: minmax(0, 1fr);
  }

  .sentence-content-issue-panel {
    padding: 18px;
    border-radius: 18px;
  }

}

@media (prefers-reduced-motion: reduce) {
  .sentences-course-progress i,
  .sentence-round-progress > span {
    transition: none;
  }
}

body.has-sentence-utility-panel {
  overflow: hidden;
}

.sentence-study-area {
  position: relative;
  overflow: visible;
}

.sentence-mobile-utility-nav {
  position: relative;
  z-index: auto;
}

.sentence-mobile-utility-backdrop {
  position: fixed;
  z-index: 118;
  inset: 0;
  padding: 0;
  border: 0;
  background: rgba(247, 249, 250, 0.28);
  -webkit-backdrop-filter: blur(5px);
  backdrop-filter: blur(5px);
}

.sentence-mobile-utility-backdrop[hidden] {
  display: none;
}

.sentence-mobile-utility-panel:not([hidden]) {
  position: fixed;
  z-index: 119;
  top: 50%;
  left: 50%;
  width: min(720px, calc(100vw - 32px));
  max-height: min(560px, calc(100dvh - 152px));
  overflow-y: auto;
  margin: 0;
  padding: 0;
  border: 1px solid rgba(220, 231, 238, 0.98);
  border-radius: 18px;
  background: #ffffff;
  transform: translate(-50%, -50%);
  box-shadow: 0 18px 46px rgba(42, 53, 66, 0.2);
}

.sentence-mobile-utility-head {
  position: sticky;
  top: 0;
  z-index: 1;
  grid-column: 1 / -1;
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 14px 8px 18px;
  border-bottom: 1px solid rgba(220, 231, 238, 0.82);
  background: #ffffff;
}

.sentence-mobile-utility-head h2 {
  margin: 0;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 840;
}

.sentence-mobile-utility-head button {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid rgba(220, 231, 238, 0.96);
  border-radius: 12px;
  background: #ffffff;
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 1.45rem;
  line-height: 1;
  outline: none !important;
}

.sentence-mobile-utility-panel:not([hidden]) > :not(.sentence-mobile-utility-head) {
  margin: 16px 18px 18px;
}

.sentence-review-mode-switch {
  width: auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.sentence-review-mode-switch button {
  min-height: 46px;
  padding: 0 8px;
  border: 1px solid rgba(220, 231, 238, 0.98);
  border-radius: 14px;
  background: #ffffff;
  color: var(--ink-soft);
  font-weight: 780;
}

.sentence-review-mode-switch button.is-active {
  border-color: rgba(216, 95, 24, 0.34);
  background: #fff4ec;
  color: #ff6a00;
}

.sentence-mobile-learning-preview {
  min-height: 88px;
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 13px 14px;
  border: 1px solid rgba(220, 231, 238, 0.94);
  border-radius: 16px;
  background: #fbfcfd;
  box-shadow: 0 8px 22px rgba(42, 53, 66, 0.06);
}

.sentence-mobile-learning-preview > strong {
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 840;
}

.sentence-mobile-learning-preview [data-sentence-review-summary] {
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 720;
  line-height: 1.55;
}

.sentence-mobile-learning-preview [data-sentence-review-summary] {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.sentence-mobile-learning-preview [data-sentence-review-summary] p {
  margin: 0;
}

.sentence-mobile-learning-preview [data-start-sentence-review] {
  min-height: 38px;
  flex: 0 0 auto;
  padding: 0 14px;
  border: 1px solid rgba(220, 231, 238, 0.98);
  border-radius: 10px;
  background: #ffffff;
  color: var(--ink-soft);
  font-weight: 780;
}

.sentence-mobile-learning-panel:not([hidden]) > .sentence-mobile-learning-preview {
  margin: 16px 18px 0;
}

.sentence-mobile-learning-panel:not([hidden]) > .sentence-review-mode-switch {
  margin: 14px 18px 18px;
}

@media (max-width: 720px) {
  .sentence-structure-note {
    display: none;
  }

  .sentence-mobile-utility-backdrop {
    background: rgba(28, 34, 42, 0.34);
  }

  .sentence-mobile-utility-panel:not([hidden]) {
    max-height: min(560px, calc(100dvh - 48px));
  }

  .sentences-page {
    padding-bottom: calc(162px + env(safe-area-inset-bottom, 0px));
  }

  .sentence-navigation {
    position: fixed;
    z-index: 116;
    left: 16px;
    right: 16px;
    bottom: calc(84px + env(safe-area-inset-bottom, 0px));
    height: 62px;
    box-sizing: border-box;
    margin: 0;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: var(--surface, #fff);
  }

  .sentence-mobile-utility-nav {
    position: fixed;
    z-index: 116;
    left: 16px;
    right: 16px;
    bottom: calc(12px + env(safe-area-inset-bottom, 0px));
    height: 66px;
    box-sizing: border-box;
    margin: 0;
  }
}