.app-tab-panels {
  flex: 1;
}

.app-tab-panel {
  display: none;
}

.app-tab-panel--active {
  display: block;
  animation: shellPanelFade 180ms ease;
}

@keyframes shellPanelFade {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.level-category {
  margin-bottom: 40px;
}

.level-category__title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-left: 8px;
  border-left: 3px solid;
  display: flex;
  align-items: center;
  gap: 12px;
}

.level-category__title--primary {
  border-left-color: #4ADE7B;
}

.level-category__title--middle {
  border-left-color: #F59E0B;
}

.level-category__title--advanced {
  border-left-color: #EF4444;
}

.level-category__title--exam {
  border-left-color: #8B5CF6;
}

.level-category__title--scene {
  border-left-color: #14B8A6;
}

.level-category__desc {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 400;
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  max-width: 1600px;
  margin: 0 auto;
}

.level-card__cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  z-index: 1;
  margin-bottom: -1px;
  background: var(--bg-elevated);
  box-shadow: 0 1px 0 var(--bg-elevated);
  transform: translateZ(0);
}

.level-card__cover::after {
  content: '';
  position: absolute;
  inset: 0 0 -1px;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0) 36%, color-mix(in srgb, var(--bg-elevated) 78%, transparent) 78%, var(--bg-elevated) 100%),
    linear-gradient(90deg, color-mix(in srgb, var(--color-primary) 18%, transparent), transparent 56%);
  pointer-events: none;
}

.level-card__cover-img {
  position: relative;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  backface-visibility: hidden;
  transform: scale(1.01);
  transition: transform 360ms cubic-bezier(0.16, 1, 0.3, 1), filter 240ms ease;
}

.level-card:hover .level-card__cover-img {
  transform: scale(1.045);
  filter: saturate(1.04);
}

.course-sections {
  display: flex;
  flex-direction: column;
  gap: 42px;
  max-width: 1600px;
  margin: 0 auto;
}

.course-section {
  min-width: 0;
}

.course-section__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.course-section__title {
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 760;
  line-height: 1.2;
}

.course-section__desc {
  margin-top: 6px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.5;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.course-card {
  --course-accent: var(--color-primary);
  --course-accent-soft: var(--color-primary-tint-15);
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 0;
  overflow: hidden;
  text-align: left;
  color: var(--text-primary);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: 16px;
  cursor: pointer;
  box-shadow: 0 18px 45px -36px rgba(15, 23, 42, 0.38);
  transition: transform 240ms cubic-bezier(0.16, 1, 0.3, 1), border-color 180ms ease, box-shadow 180ms ease;
}

.course-card--primary {
  --course-accent: #4ADE7B;
  --course-accent-soft: rgba(74, 222, 123, 0.16);
}

.course-card--middle {
  --course-accent: #F59E0B;
  --course-accent-soft: rgba(245, 158, 11, 0.16);
}

.course-card--advanced {
  --course-accent: #EF4444;
  --course-accent-soft: rgba(239, 68, 68, 0.15);
}

.course-card--exam {
  --course-accent: #8B5CF6;
  --course-accent-soft: rgba(139, 92, 246, 0.16);
}

.course-card--scene {
  --course-accent: #14B8A6;
  --course-accent-soft: rgba(20, 184, 166, 0.16);
}

.course-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--course-accent) 70%, var(--border-default));
  box-shadow: 0 22px 54px -34px color-mix(in srgb, var(--course-accent) 35%, rgba(15, 23, 42, 0.52));
}

.course-card:active {
  transform: translateY(-1px) scale(0.99);
}

.course-card:focus-visible {
  outline: none;
  border-color: var(--course-accent);
  box-shadow: 0 0 0 4px var(--course-accent-soft);
}

.course-card__cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-tertiary);
  transform: translateZ(0);
  isolation: isolate;
}

.course-card__cover::after {
  content: '';
  position: absolute;
  inset: 0 0 -2px;
  z-index: 1;
  background:
    linear-gradient(180deg, transparent 38%, color-mix(in srgb, var(--bg-elevated) 92%, transparent) 100%),
    linear-gradient(90deg, color-mix(in srgb, var(--course-accent) 20%, transparent), transparent 58%);
  pointer-events: none;
}

.course-card__cover-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.01);
  backface-visibility: hidden;
  will-change: transform;
  transition: transform 360ms cubic-bezier(0.16, 1, 0.3, 1);
}

.course-card:hover .course-card__cover-img {
  transform: scale(1.045);
}

.course-card__difficulty {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 2;
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-width: 46px;
  min-height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  color: var(--difficulty-text, var(--difficulty-entry-text));
  background: var(--difficulty-surface, var(--difficulty-entry-surface));
  border: 1px solid var(--difficulty-border, var(--difficulty-entry-border));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 10px 24px -18px rgba(15, 23, 42, 0.86);
  backdrop-filter: blur(12px) saturate(1.05);
  font-size: 12px;
  font-weight: 850;
  line-height: 1;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.22);
  white-space: nowrap;
  word-break: keep-all;
  overflow-wrap: normal;
  text-wrap: nowrap;
}

.course-card__body {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: -1px;
  padding: 18px 20px 20px;
  background: var(--bg-elevated);
}

.course-card__topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.course-card__title {
  min-width: 0;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 750;
  line-height: 1.2;
}

.course-card__desc {
  min-height: 42px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.55;
}

.course-card__meta {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 6px;
  min-width: 0;
  color: var(--text-tertiary);
  font-size: 11px;
  font-weight: 650;
}

.course-card__meta span {
  display: inline-flex;
  flex: 1 1 0;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 26px;
  padding: 0 6px;
  border-radius: 999px;
  background: var(--bg-tertiary);
  line-height: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.course-card__progress-bar {
  height: 6px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--bg-tertiary);
}

.course-card__progress-bar span {
  display: block;
  width: var(--course-progress, 0%);
  height: 100%;
  border-radius: inherit;
  background: var(--course-accent);
  transition: width 280ms ease;
}

html.course-lessons-scroll-locked,
body.course-lessons-scroll-locked {
  overflow: hidden;
  overscroll-behavior: none;
}

.course-lessons-modal {
  background: rgba(17, 24, 39, 0.58);
  backdrop-filter: blur(10px) saturate(0.96);
  overscroll-behavior: contain;
}

.course-lessons-modal__dialog {
  max-width: min(820px, calc(100vw - 32px));
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 30px 80px -42px rgba(15, 23, 42, 0.72);
  overscroll-behavior: contain;
}

.course-lessons-modal__header {
  align-items: flex-start;
  gap: 18px;
}

.course-lessons-modal__heading {
  display: grid;
  grid-template-columns: 136px minmax(0, 1fr);
  align-items: center;
  gap: 18px;
  min-width: 0;
}

.course-lessons-modal__cover {
  position: relative;
  width: 136px;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: 16px;
  background: var(--bg-tertiary);
  border: 1px solid color-mix(in srgb, var(--border-default) 72%, var(--color-primary) 28%);
  box-shadow: 0 18px 40px -30px rgba(15, 23, 42, 0.68);
}

.course-lessons-modal__cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 44%, color-mix(in srgb, var(--bg-elevated) 72%, transparent) 100%);
  pointer-events: none;
}

.course-lessons-modal__cover img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.course-lessons-modal__copy {
  min-width: 0;
}

.course-lessons-modal__eyebrow {
  margin-bottom: 4px;
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.course-lessons-modal__desc {
  margin-top: 6px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.55;
}

.course-lessons-modal__body {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-height: min(68vh, 720px);
  overflow: auto;
  overscroll-behavior: contain;
}

.course-lessons-modal__summary {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.course-lessons-modal__summary span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 11px;
  border-radius: 999px;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  font-size: 12px;
  font-weight: 700;
}

.lesson-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.lesson-list__loading {
  display: grid;
  min-height: 120px;
  place-items: center;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 700;
}

.lesson-row {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) 150px;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 14px;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: 14px;
  text-align: left;
  cursor: pointer;
  transition: transform 180ms cubic-bezier(0.16, 1, 0.3, 1), background-color 150ms ease, border-color 150ms ease;
}

.lesson-row:hover {
  transform: translateY(-1px);
  border-color: var(--color-primary);
  background: color-mix(in srgb, var(--bg-secondary) 84%, var(--color-primary) 16%);
}

.lesson-row:active {
  transform: translateY(1px) scale(0.995);
}

.lesson-row:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-tint-15);
}

.lesson-row__index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 13px;
  color: var(--text-secondary);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
}

.lesson-row__main,
.lesson-row__side {
  min-width: 0;
}

.lesson-row__main {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.lesson-row__title {
  overflow: hidden;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 750;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lesson-row__desc {
  overflow: hidden;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lesson-row__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--text-tertiary);
  font-size: 12px;
  font-weight: 650;
}

.lesson-row__meta span {
  white-space: nowrap;
}

.lesson-row__side {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  gap: 10px;
  justify-self: end;
  text-align: right;
  width: 150px;
}

.lesson-row__progress {
  width: 84px;
  height: 6px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--bg-tertiary);
}

.lesson-row__progress span {
  display: block;
  width: var(--lesson-progress, 0%);
  height: 100%;
  border-radius: inherit;
  background: var(--color-primary);
}

.lesson-row__action {
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 750;
  text-align: right;
}

.completion-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(17, 24, 39, 0.54);
  backdrop-filter: blur(8px) saturate(0.9);
  -webkit-backdrop-filter: blur(8px) saturate(0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.completion-modal-overlay--active {
  opacity: 1;
  visibility: visible;
}

.completion-modal {
  --completion-modal-width-compact: 520px;
  --completion-modal-width-regular: 760px;
  --completion-modal-width-wide: 840px;
  --completion-stat-shell: rgba(243, 244, 246, 0.62);
  --completion-stat-surface: rgba(255, 255, 255, 0.78);
  --completion-stat-border: rgba(229, 231, 235, 0.86);
  --completion-duration-color: var(--text-primary);
  --completion-stat-number-size: 42px;
  --completion-stat-duration-size: 40px;
  --completion-stat-duration-long-size: 36px;
  --completion-stat-duration-very-long-size: 32px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: 28px;
  padding: 42px 40px 40px;
  text-align: center;
  max-width: var(--completion-modal-width-regular);
  width: 90vw;
  box-shadow: 0 30px 80px -38px rgba(15, 23, 42, 0.55), 0 1px 0 rgba(255, 255, 255, 0.8) inset;
  transform: scale(0.9);
  transition: transform 0.34s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

[data-theme="dark"] .completion-modal {
  --completion-stat-shell: rgba(15, 23, 42, 0.38);
  --completion-stat-surface: rgba(17, 24, 39, 0.58);
  --completion-stat-border: rgba(75, 85, 99, 0.34);
  --completion-duration-color: var(--text-primary);
  box-shadow: 0 34px 90px -44px rgba(0, 0, 0, 0.85), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.completion-modal-overlay--active .completion-modal {
  transform: scale(1);
}

.completion__close {
  position: absolute;
  top: 18px;
  right: 18px;
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.completion__close:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  transform: scale(1.04);
}

.completion__close svg {
  width: 20px;
  height: 20px;
}

.completion__icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 58px;
  line-height: 1;
}

.completion__icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.completion__title {
  font-size: 30px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
  letter-spacing: 0;
}

.completion__subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 28px;
  line-height: 1.5;
}

.completion__stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr)) minmax(132px, 1.16fr);
  gap: 10px;
  margin-bottom: 28px;
  padding: 10px;
  border-radius: 22px;
  background: var(--completion-stat-shell);
  border: 1px solid var(--completion-stat-border);
}

.completion__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-width: 0;
  min-height: 132px;
  padding: 16px 10px 14px;
  border-radius: 16px;
  background: var(--completion-stat-surface);
  border: 1px solid var(--completion-stat-border);
}

.completion__stat-icon {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.55);
}

.completion__stat-icon svg {
  width: 23px;
  height: 23px;
  stroke: currentColor;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

.completion__stat-icon--correct {
  background: var(--color-success-tint);
  color: var(--color-success);
}

.completion__stat-icon--wrong {
  background: var(--color-error-tint);
  color: var(--color-error);
}

.completion__stat-icon--total {
  background: var(--color-primary-tint-10);
  color: var(--color-primary);
}

.completion__stat-icon--combo {
  background: var(--color-warning-tint);
  color: var(--color-warning);
}

.completion__stat-icon--duration {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.completion__stat-value {
  font-family: var(--font-display);
  font-size: var(--completion-stat-number-size);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0;
  font-variant-numeric: tabular-nums;
}

.completion__stat:nth-child(1) .completion__stat-value {
  color: var(--color-success);
}

.completion__stat:nth-child(2) .completion__stat-value {
  color: var(--color-error);
}

.completion__stat:nth-child(3) .completion__stat-value {
  color: var(--text-primary);
}

.completion__stat:nth-child(5) .completion__stat-value {
  color: var(--completion-duration-color);
}

.completion__stat--combo .completion__stat-value {
  color: var(--color-warning);
}

.completion__stat--duration .completion__stat-value {
  color: var(--completion-duration-color);
}

.completion__stat-value--duration {
  font-family: var(--font-display);
  font-size: var(--completion-stat-duration-size);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.completion__stat-value--duration-long {
  font-size: var(--completion-stat-duration-long-size);
}

.completion__stat-value--duration-very-long {
  font-size: var(--completion-stat-duration-very-long-size);
}

.completion__stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 650;
  text-align: center;
}

.completion__buttons {
  display: flex;
  gap: 12px;
  flex-direction: row;
}

.completion__btn {
  flex: 1;
  min-height: 54px;
  padding: 0 32px;
  border-radius: 16px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 180ms cubic-bezier(0.16, 1, 0.3, 1), background-color 150ms ease, border-color 150ms ease, color 150ms ease, box-shadow 150ms ease;
  border: none;
}

.completion__btn:disabled {
  cursor: wait;
  opacity: 0.82;
  pointer-events: none;
}

.completion__btn.is-loading {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.button-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 999px;
  flex: 0 0 auto;
  animation: buttonSpinner 700ms linear infinite;
}

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

.completion__btn[hidden] {
  display: none;
}

.completion__btn--primary {
  background: var(--color-primary);
  color: var(--text-on-primary);
  box-shadow: var(--shadow-btn);
}

.completion__btn--primary:hover {
  background: var(--color-primary-500);
  transform: translateY(-1px);
  box-shadow: 0 12px 28px -18px rgba(34, 197, 94, 0.65);
}

.completion__btn:active {
  transform: translateY(1px) scale(0.99);
}

.completion__btn--retry-wrong {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-default);
}

.completion__btn--retry-wrong:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-strong);
  color: var(--text-primary);
  transform: translateY(-1px);
}

@media (max-width: 700px) {
  .completion-modal {
    max-width: min(var(--completion-modal-width-compact), calc(100vw - 24px));
    padding: 38px 24px;
  }

  .completion__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    padding: 10px;
  }

  .completion__stat {
    min-height: 124px;
  }

  .completion__stat--duration {
    grid-column: span 2;
  }
}

@media (min-width: 1180px) {
  .completion-modal {
    max-width: var(--completion-modal-width-wide);
  }
}

@media (max-width: 760px) {
  .course-sections {
    gap: 34px;
  }

  .course-section__header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

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

  .course-lessons-modal__dialog {
    max-width: calc(100vw - 20px);
  }

  .course-lessons-modal__heading {
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 14px;
  }

  .course-lessons-modal__cover {
    width: 112px;
    border-radius: 14px;
  }

  .course-lessons-modal__body {
    max-height: 70vh;
  }

  .lesson-row {
    grid-template-columns: 42px minmax(0, 1fr);
    align-items: start;
  }

  .lesson-row__index {
    width: 40px;
    height: 40px;
  }

  .lesson-row__side {
    grid-column: 2;
    align-items: stretch;
    width: 100%;
  }

  .lesson-row__progress {
    width: 100%;
  }

  .lesson-row__action {
    align-self: flex-end;
    text-align: right;
  }
}

@media (max-width: 460px) {
  .course-card__body {
    padding: 16px;
  }

  .course-card__desc {
    min-height: 0;
  }

  .course-lessons-modal__header,
  .course-lessons-modal__body {
    padding: 18px;
  }

  .course-lessons-modal__header {
    gap: 12px;
  }

  .course-lessons-modal__heading {
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 12px;
  }

  .course-lessons-modal__cover {
    width: 82px;
    border-radius: 12px;
  }

  .lesson-row {
    padding: 12px;
    gap: 12px;
  }

  .lesson-row__action {
    align-self: flex-end;
    text-align: right;
  }
}

@media (max-width: 440px) {
  .completion-modal {
    --completion-stat-number-size: 36px;
    --completion-stat-duration-size: 34px;
    --completion-stat-duration-long-size: 31px;
    --completion-stat-duration-very-long-size: 28px;
    padding: 36px 18px;
    border-radius: 20px;
  }

  .completion__title {
    font-size: 28px;
  }

  .completion__subtitle {
    font-size: 16px;
  }
}

.tab-style-tabs {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  overflow-x: auto;
  padding-bottom: var(--space-1);
}

.tab-style-tabs__item {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  transition: all 150ms ease;
  white-space: nowrap;
  border: none;
  cursor: pointer;
}

.tab-style-tabs__item:hover {
  color: var(--text-primary);
  background: var(--bg-primary);
}

.tab-style-tabs__item--active {
  color: var(--color-on-primary);
  background: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.page-content-wrapper {
  padding-bottom: 160px;
}

@media (min-width: 1024px) {
  .page-content-wrapper {
    padding-bottom: 100px;
  }
}

.filter-bar {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.filter-bar__input {
  flex: 1;
  min-width: 200px;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: var(--text-sm);
}

.filter-bar__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-tint-15);
}

.filter-bar__select {
  padding: var(--space-3) calc(var(--space-6) + 20px) var(--space-3) var(--space-4);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: var(--text-sm);
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236B7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  background-size: 20px;
}

.filter-bar__select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-tint-15);
}

.daily-checkin-panel {
  padding: var(--space-6);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-2xl);
  box-shadow: 0 18px 45px -30px rgba(17, 24, 39, 0.28);
}

.daily-checkin-panel__header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.daily-checkin-panel__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.daily-checkin-panel__desc {
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.daily-checkin-panel__cta {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 52px;
  padding: 0 var(--space-6);
  border: 1px solid rgba(var(--color-primary-rgb), 0.58);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.16), transparent 48%),
    var(--color-primary);
  color: var(--color-on-primary);
  font-weight: 800;
  transition:
    transform 0.24s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.24s cubic-bezier(0.16, 1, 0.3, 1),
    border-color 0.24s ease,
    background-color 0.24s ease;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.28),
    0 14px 28px -20px var(--shadow-primary);
}

.daily-checkin-panel__cta::before {
  content: "";
  position: absolute;
  inset: 1px;
  z-index: -1;
  border-radius: calc(var(--radius-xl) - 1px);
  background: radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.28), transparent 54%);
  opacity: 0;
  transition: opacity 0.24s ease;
}

.daily-checkin-panel__cta:hover {
  border-color: rgba(var(--color-primary-rgb), 0.86);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.22), transparent 50%),
    var(--color-primary-600);
  transform: translateY(-2px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.34),
    0 18px 34px -21px rgba(var(--color-primary-rgb), 0.62);
}

.daily-checkin-panel__cta:hover::before {
  opacity: 1;
}

.daily-checkin-panel__cta:active {
  transform: translateY(0) scale(0.985);
  box-shadow:
    inset 0 2px 8px rgba(18, 33, 27, 0.16),
    0 10px 22px -18px rgba(var(--color-primary-rgb), 0.5);
}

.daily-checkin-panel__cta:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.daily-checkin-panel__cta svg {
  width: 18px;
  height: 18px;
  transition: transform 0.24s cubic-bezier(0.16, 1, 0.3, 1);
}

.daily-checkin-panel__cta:hover svg {
  transform: translateX(2px) scale(1.04);
}

.daily-checkin-panel__grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr);
  gap: var(--space-4);
}

.daily-checkin-metric {
  padding: var(--space-5);
  border-radius: var(--radius-xl);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
}

.daily-checkin-metric--summary {
  display: flex;
  align-items: stretch;
}

.daily-checkin-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  width: 100%;
}

.daily-checkin-summary__item {
  min-width: 0;
}

.daily-checkin-summary__item + .daily-checkin-summary__item {
  padding-left: var(--space-4);
  border-left: 1px solid var(--border-default);
}

.daily-checkin-metric__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.daily-checkin-metric__label {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-secondary);
}

.daily-checkin-metric__label-group {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.daily-goal-edit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border-radius: var(--radius-full);
  color: var(--text-tertiary);
  background: color-mix(in srgb, var(--bg-tertiary) 70%, transparent);
  border: 1px solid color-mix(in srgb, var(--border-default) 60%, transparent);
  line-height: 1;
  opacity: 0.78;
  transition: opacity 160ms ease, background 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.daily-goal-edit svg {
  width: 15px;
  height: 15px;
}

.daily-goal-edit:hover,
.daily-goal-edit[aria-expanded="true"] {
  opacity: 1;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border-color: var(--border-default);
}

.daily-goal-edit:active {
  transform: scale(0.96);
}

.daily-goal-modal {
  background: color-mix(in srgb, var(--overlay-bg) 72%, transparent);
}

.daily-goal-modal__dialog {
  max-width: min(460px, calc(100vw - 32px));
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 30px 80px -42px rgba(15, 23, 42, 0.72);
}

.daily-goal-modal__header {
  align-items: flex-start;
}

.daily-goal-modal__eyebrow {
  margin-bottom: 4px;
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.daily-goal-modal__body {
  padding-top: 22px;
  padding-bottom: 22px;
}

.daily-goal-picker {
  padding: 18px;
  border-radius: var(--radius-xl);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
}

.daily-goal-picker__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.daily-goal-picker__label {
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 760;
}

.daily-goal-picker__value {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 850;
  line-height: 1;
}

.daily-goal-picker__value span:last-child {
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 750;
}

.daily-goal-range {
  --range-progress: 0%;
  width: 100%;
  height: 28px;
  margin: 0;
  background: transparent;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

.daily-goal-range:focus {
  outline: none;
}

.daily-goal-range::-webkit-slider-runnable-track {
  height: 8px;
  border-radius: var(--radius-full);
  background:
    linear-gradient(90deg, var(--color-primary) 0 var(--range-progress), var(--bg-sunken) var(--range-progress) 100%);
  border: 1px solid var(--border-subtle);
}

.daily-goal-range::-moz-range-track {
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--bg-sunken);
  border: 1px solid var(--border-subtle);
}

.daily-goal-range::-moz-range-progress {
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
}

.daily-goal-range::-webkit-slider-thumb {
  width: 24px;
  height: 24px;
  margin-top: -9px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 4px solid var(--bg-elevated);
  box-shadow: 0 8px 22px -12px rgba(15, 23, 42, 0.9);
  -webkit-appearance: none;
  appearance: none;
}

.daily-goal-range::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 4px solid var(--bg-elevated);
  box-shadow: 0 8px 22px -12px rgba(15, 23, 42, 0.9);
}

.daily-goal-range:focus-visible::-webkit-slider-thumb {
  box-shadow: 0 0 0 4px var(--color-primary-tint-15), 0 8px 22px -12px rgba(15, 23, 42, 0.9);
}

.daily-goal-range:focus-visible::-moz-range-thumb {
  box-shadow: 0 0 0 4px var(--color-primary-tint-15), 0 8px 22px -12px rgba(15, 23, 42, 0.9);
}

.daily-goal-range__labels {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 750;
}

.daily-checkin-metric__value,
.daily-checkin-metric__days {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--text-primary);
}

.daily-checkin-metric__value {
  font-size: var(--text-xl);
}

.daily-checkin-metric__days {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  font-size: var(--text-3xl);
}

.daily-checkin-metric__days span:last-child {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.daily-checkin-progress {
  height: 12px;
  overflow: hidden;
  border-radius: var(--radius-full);
  background: var(--bg-sunken);
}

.daily-checkin-progress__fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-600));
  transition: width 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.recent-learning-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  padding: var(--space-10) var(--space-6);
  text-align: center;
  background: var(--bg-elevated);
  border: 1px dashed var(--border-default);
  border-radius: var(--radius-2xl);
}

.recent-learning-empty__icon {
  width: 64px;
  height: 64px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  border-radius: var(--radius-xl);
  color: var(--color-primary);
  background: var(--color-primary-tint-10);
  border: 1px solid var(--color-primary-tint-15);
}

.recent-learning-empty__icon svg {
  width: 30px;
  height: 30px;
}

.recent-learning-empty__title {
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--text-primary);
}

.recent-learning-empty__desc {
  max-width: 360px;
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.word-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  align-items: stretch;
}

.word-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-default);
  transition: all 0.2s ease;
}

.word-item:not(.word-item--selectable) {
  grid-template-columns: minmax(0, 1fr) auto;
}

.word-item[data-selected="true"] {
  border-color: var(--color-primary);
  background: var(--color-primary-50);
}

.word-item--clickable {
  cursor: pointer;
}

.word-item--clickable:hover,
.word-item:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(74, 222, 123, 0.1);
}

.word-item__content {
  min-width: 0;
}

.word-item__word {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
  overflow-wrap: anywhere;
}

.word-item__phonetic {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-family: "JetBrains Mono", monospace;
  margin-bottom: var(--space-1);
}

.word-item__translation {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  overflow-wrap: anywhere;
}

.word-item__meta {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
}

.word-item__side {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  justify-self: end;
}

.word-item__type {
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-2);
  background: var(--color-primary-50);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-weight: 500;
}

.word-item__actions {
  display: flex;
  gap: var(--space-2);
}

.word-item__btn {
  background: transparent;
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  padding: var(--space-2);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.word-item__btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.word-item__btn--danger:hover {
  border-color: #EF4444;
  color: #EF4444;
}

@media (max-width: 767px) {
  .word-list {
    grid-template-columns: 1fr;
  }
}

.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  color: var(--text-secondary);
  background: var(--bg-elevated);
  border: 1px dashed var(--border-default);
  border-radius: var(--radius-2xl);
}

.empty-state__icon {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  background: var(--color-primary-tint-10);
  border: 1px solid var(--color-primary-tint-15);
  border-radius: var(--radius-2xl);
}

.empty-state__icon svg {
  width: 34px;
  height: 34px;
}

.empty-state__title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.empty-state__desc {
  font-size: var(--text-sm);
}

.selection-bar {
  position: fixed;
  bottom: calc(76px + env(safe-area-inset-bottom));
  left: 50%;
  right: auto;
  width: min(680px, calc(100vw - 32px));
  transform: translateX(-50%);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-2xl);
  padding: var(--space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  z-index: 99;
  box-shadow: 0 18px 45px -24px rgba(17, 24, 39, 0.36);
}

@media (min-width: 1024px) {
  .selection-bar {
    left: calc(260px + (100vw - 260px) / 2);
    bottom: max(24px, env(safe-area-inset-bottom));
  }
}

.selection-bar__left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-width: 0;
}

.selection-bar__count {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  white-space: nowrap;
}

@media (max-width: 760px) {
  .daily-checkin-panel__header,
  .daily-checkin-panel__grid {
    grid-template-columns: 1fr;
  }

  .daily-checkin-panel__cta {
    width: 100%;
  }

  .daily-checkin-summary__item + .daily-checkin-summary__item {
    padding-left: var(--space-3);
  }

  .word-item {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: start;
  }

  .word-item:not(.word-item--selectable) {
    grid-template-columns: minmax(0, 1fr);
  }

  .word-item__side {
    grid-column: 2;
    flex-wrap: wrap;
    justify-content: space-between;
    justify-self: stretch;
  }

  .word-item:not(.word-item--selectable) .word-item__side {
    grid-column: 1;
  }

  .selection-bar {
    align-items: stretch;
    flex-direction: column;
  }

  .selection-bar__left {
    justify-content: space-between;
  }
}

.form-checkbox {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  cursor: pointer;
  position: relative;
  transition: all 0.2s ease;
}

.form-checkbox:hover {
  border-color: var(--color-primary-300);
}

.form-checkbox:checked {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.form-checkbox:checked::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(45deg);
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
}

.form-checkbox:focus {
  outline: none;
  box-shadow: 0 0 0 3px var(--color-primary-tint-15);
}

@media (max-width: 768px) {
  .level-grid {
    grid-template-columns: 1fr;
  }
}