@layer components {
  /* ═══════════════════════════════════════════════════════════════════════════
     Source Cards Pipeline
     ═══════════════════════════════════════════════════════════════════════════ */

  .source-filters {
    display: flex;
    gap: 0.25rem;
    padding: 0.25rem;
    margin-block-end: 1.5rem;
    background: var(--color-shade);
    border-radius: 0.75rem;
  }

  .source-filters__tab {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5em;
    padding: 0.6em 1em;
    font-size: var(--text-small);
    font-weight: 500;
    color: var(--color-ink-dark);
    text-decoration: none;
    border-radius: 0.5rem;
    transition: all 150ms ease;
  }

  .source-filters__tab:hover {
    color: var(--color-ink);
    background: oklch(var(--lch-white) / 50%);
  }

  .source-filters__tab--active {
    background: var(--color-card);
    color: var(--color-ink);
    box-shadow: 0 1px 3px oklch(var(--lch-black) / 8%);
  }

  .source-filters__count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-inline-size: 1.5em;
    padding: 0.1em 0.4em;
    font-size: 0.8em;
    font-weight: 600;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 100px;
  }

  .source-filters__count--active {
    background: oklch(var(--lch-yellow-lighter));
    color: oklch(var(--lch-yellow-dark));
    animation: pulse-soft 2s ease-in-out infinite;
  }

  .source-filters__count--muted {
    background: var(--color-ink-lightest);
    color: var(--color-ink-medium);
  }

  .source-filters__count--done {
    background: oklch(var(--lch-green-lighter));
    color: oklch(var(--lch-green-dark));
  }

  @keyframes pulse-soft {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
  }

  /* Source cards container */
  .source-cards {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  /* Individual source card */
  .source-card {
    background: var(--color-card);
    border: 1px solid var(--color-ink-lightest);
    border-radius: 1rem;
    overflow: hidden;
    transition: all 250ms var(--ease-out-expo);
  }

  .source-card:hover {
    border-color: var(--color-ink-lighter);
    box-shadow: 0 4px 12px oklch(var(--lch-black) / 6%);
  }

  /* Status variants */
  .source-card--generating {
    border-color: oklch(var(--lch-yellow-light));
    background: linear-gradient(
      135deg,
      var(--color-card) 0%,
      oklch(var(--lch-yellow-lightest)) 100%
    );
  }

  .source-card--skipped {
    opacity: 0.55;
    border-style: dashed;
  }

  .source-card--skipped:hover {
    opacity: 0.75;
  }

  .source-card--done {
    border-color: oklch(var(--lch-green-light));
    background: linear-gradient(
      135deg,
      var(--color-card) 0%,
      oklch(var(--lch-green-lightest)) 100%
    );
  }

  .source-card--done .source-card__footer {
    background: oklch(var(--lch-green-lightest));
    border-color: oklch(var(--lch-green-lighter));
  }

  /* Card content */
  .source-card__content {
    padding: 1.25rem 1.5rem;
  }

  .source-card__text {
    margin: 0;
    font-family: var(--font-serif);
    font-size: var(--text-normal);
    line-height: 1.65;
    color: var(--color-ink);
    /* Allow text to wrap naturally - no truncation */
    white-space: pre-wrap;
    word-break: break-word;
  }

  .source-card--skipped .source-card__text {
    color: var(--color-ink-dark);
  }

  /* Card footer */
  .source-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.875rem 1.5rem;
    background: var(--color-shade);
    border-block-start: 1px solid var(--color-ink-lightest);
  }

  .source-card--generating .source-card__footer {
    background: oklch(var(--lch-yellow-lightest));
    border-color: oklch(var(--lch-yellow-lighter));
  }

  .source-card--skipped .source-card__footer {
    background: transparent;
    border-style: dashed;
  }

  .source-card__meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: var(--text-small);
    color: var(--color-ink-medium);
  }

  .source-card__origin {
    display: inline-flex;
    align-items: center;
    gap: 0.35em;
  }

  .source-card__time {
    opacity: 0.8;
  }

  /* Card actions */
  .source-card__actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .source-card__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    padding: 0.45em 1em;
    font-size: var(--text-small);
    font-weight: 600;
    border-radius: 100px;
    border: none;
    cursor: pointer;
    transition: all 150ms ease;
  }

  .source-card__btn--generate {
    background: var(--color-primary);
    color: var(--color-ink-inverted);
  }

  .source-card__btn--generate:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
  }

  .source-card__btn--skip {
    background: transparent;
    color: var(--color-ink-medium);
    padding-inline: 0.75em;
  }

  .source-card__btn--skip:hover {
    color: var(--color-ink);
    background: var(--color-ink-lightest);
  }

  .source-card__btn--restore {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary-light);
  }

  .source-card__btn--restore:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
    transform: translateY(-1px);
  }

  /* Status indicators */
  .source-card__status {
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
    padding: 0.4em 0.9em;
    font-size: var(--text-small);
    font-weight: 500;
    border-radius: 100px;
  }

  .source-card__status--generating {
    background: oklch(var(--lch-yellow-lighter));
    color: oklch(var(--lch-yellow-dark));
  }

  .source-card__status--skipped {
    background: var(--color-ink-lightest);
    color: var(--color-ink-medium);
  }

  .source-card__status--done {
    background: oklch(var(--lch-green-lighter));
    color: oklch(var(--lch-green-dark));
  }

  /* Spinner animation */
  .source-card__spinner {
    inline-size: 1em;
    block-size: 1em;
    border: 2px solid currentColor;
    border-block-start-color: transparent;
    border-radius: 50%;
    animation: spin 800ms linear infinite;
  }

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

  /* Empty state */
  .source-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 4rem 2rem;
    text-align: center;
  }

  .source-empty__icon {
    margin-block-end: 1.5rem;
    color: var(--color-ink-light);
  }

  .source-empty__title {
    margin: 0 0 0.5rem;
    font-size: var(--text-medium);
    font-weight: 500;
    color: var(--color-ink-dark);
  }

  .source-empty__hint {
    margin: 0;
    font-size: var(--text-small);
    color: var(--color-ink-medium);
  }

  /* ═══════════════════════════════════════════════════════════════════════════
     Proposal Cards (Review Queue)
     ═══════════════════════════════════════════════════════════════════════════ */

  .proposal-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    margin-block-end: 1.5rem;
    background: var(--color-card);
    border: 1px solid var(--color-ink-lightest);
    border-radius: 0.75rem;
  }

  .proposal-summary__count {
    font-size: var(--text-small);
    font-weight: 500;
    color: var(--color-ink-dark);
  }

  .proposal-summary__approve-all {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    padding: 0.5em 1.1em;
    font-size: var(--text-small);
    font-weight: 600;
    background: var(--color-positive);
    color: var(--color-ink-inverted);
    border: none;
    border-radius: 100px;
    cursor: pointer;
    transition: all 150ms ease;
  }

  .proposal-summary__approve-all:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
  }

  /* Proposal cards container */
  .proposal-cards {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  /* Individual proposal card */
  .proposal-card {
    background: var(--color-card);
    border: 1px solid var(--color-ink-lightest);
    border-radius: 1rem;
    overflow: hidden;
    transition: all 250ms var(--ease-out-expo);
  }

  .proposal-card:hover {
    border-color: var(--color-ink-lighter);
    box-shadow: 0 4px 12px oklch(var(--lch-black) / 6%);
  }

  /* Card content - side by side layout */
  .proposal-card__content {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0;
    align-items: stretch;
  }

  @media (max-width: 600px) {
    .proposal-card__content {
      grid-template-columns: 1fr;
    }
  }

  .proposal-card__front,
  .proposal-card__back {
    padding: 1.25rem 1.5rem;
  }

  .proposal-card__front {
    background: var(--color-shade);
  }

  .proposal-card__back {
    background: var(--color-card);
  }

  .proposal-card__label {
    display: inline-block;
    margin-block-end: 0.5rem;
    padding: 0.15em 0.5em;
    font-size: var(--text-x-small);
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--color-ink-medium);
    background: var(--color-ink-lightest);
    border-radius: 0.25rem;
  }

  .proposal-card__text {
    margin: 0;
    font-family: var(--font-serif);
    font-size: var(--text-normal);
    line-height: 1.5;
  }

  .proposal-card__text--front {
    color: var(--color-ink);
    font-weight: 500;
  }

  .proposal-card__text--back {
    color: var(--color-primary);
  }

  .proposal-card__divider {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    color: var(--color-ink-light);
    background: linear-gradient(
      90deg,
      var(--color-shade) 0%,
      var(--color-card) 100%
    );
  }

  @media (max-width: 600px) {
    .proposal-card__divider {
      padding: 0.75rem;
      background: linear-gradient(
        180deg,
        var(--color-shade) 0%,
        var(--color-card) 100%
      );
    }

    .proposal-card__divider svg {
      transform: rotate(90deg);
    }
  }

  /* Card footer */
  .proposal-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.875rem 1.5rem;
    background: var(--color-shade);
    border-block-start: 1px solid var(--color-ink-lightest);
  }

  .proposal-card__meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: var(--text-small);
    color: var(--color-ink-medium);
  }

  .proposal-card__source {
    display: inline-flex;
    align-items: center;
    gap: 0.35em;
  }

  .proposal-card__time {
    opacity: 0.8;
  }

  /* Card actions */
  .proposal-card__actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .proposal-card__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    padding: 0.45em 1em;
    font-size: var(--text-small);
    font-weight: 600;
    border-radius: 100px;
    border: none;
    cursor: pointer;
    transition: all 150ms ease;
  }

  .proposal-card__btn--approve {
    background: var(--color-positive);
    color: var(--color-ink-inverted);
  }

  .proposal-card__btn--approve:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
  }

  .proposal-card__btn--reject {
    background: transparent;
    color: var(--color-ink-medium);
    padding-inline: 0.75em;
  }

  .proposal-card__btn--reject:hover {
    color: var(--color-negative);
    background: oklch(var(--lch-red-lightest));
  }

  /* Status variants */
  .proposal-card--approved {
    background: oklch(var(--lch-green-lightest) / 0.4);
    border-color: oklch(var(--lch-green-lighter));
  }

  .proposal-card--approved .proposal-card__front {
    background: oklch(var(--lch-green-lightest) / 0.5);
  }

  .proposal-card--rejected {
    background: var(--color-ink-lightest);
    border-color: var(--color-ink-lightest);
    opacity: 0.7;
  }

  .proposal-card--rejected .proposal-card__text {
    color: var(--color-ink-medium);
  }

  /* Status labels (for approved/rejected cards) */
  .proposal-card__status {
    display: inline-flex;
    align-items: center;
    gap: 0.35em;
    padding: 0.4em 0.9em;
    font-size: var(--text-small);
    font-weight: 500;
    border-radius: 100px;
  }

  .proposal-card__status--approved {
    color: oklch(var(--lch-green-dark));
    background: oklch(var(--lch-green-lightest));
  }

  .proposal-card__status--rejected {
    color: var(--color-ink-medium);
    background: var(--color-shade);
  }

  /* ═══════════════════════════════════════════════════════════════════════════
     Flashcards List (Approved Cards)
     ═══════════════════════════════════════════════════════════════════════════ */

  .flashcards-section {
    margin-block-start: 1.5rem;
  }

  .flashcards-section__title {
    margin: 0 0 1rem;
    padding-block-end: 0.75rem;
    font-size: var(--text-x-small);
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-ink-medium);
    border-block-end: 1px solid var(--color-ink-lightest);
  }

  .flashcards-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 0;
    list-style: none;
    margin: 0;
  }

  /* Flashcard card - matches proposal card style */
  .flashcard-card {
    background: var(--color-card);
    border: 1px solid var(--color-ink-lightest);
    border-radius: 1rem;
    overflow: hidden;
    transition: all 250ms var(--ease-out-expo);
  }

  .flashcard-card:hover {
    border-color: var(--color-ink-lighter);
    box-shadow: 0 4px 12px oklch(var(--lch-black) / 6%);
  }

  /* Card content - side by side layout */
  .flashcard-card__content {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0;
    align-items: stretch;
  }

  @media (max-width: 600px) {
    .flashcard-card__content {
      grid-template-columns: 1fr;
    }
  }

  .flashcard-card__front,
  .flashcard-card__back {
    padding: 1.25rem 1.5rem;
  }

  .flashcard-card__front {
    background: var(--color-shade);
  }

  .flashcard-card__back {
    background: var(--color-card);
  }

  .flashcard-card__label {
    display: inline-block;
    margin-block-end: 0.5rem;
    padding: 0.15em 0.5em;
    font-size: var(--text-x-small);
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--color-ink-medium);
    background: var(--color-ink-lightest);
    border-radius: 0.25rem;
  }

  .flashcard-card__text {
    margin: 0;
    font-family: var(--font-serif);
    font-size: var(--text-normal);
    line-height: 1.5;
  }

  .flashcard-card__text--front {
    color: var(--color-ink);
    font-weight: 500;
  }

  .flashcard-card__text--back {
    color: var(--color-primary);
  }

  .flashcard-card__divider {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    color: var(--color-ink-light);
    background: linear-gradient(
      90deg,
      var(--color-shade) 0%,
      var(--color-card) 100%
    );
  }

  @media (max-width: 600px) {
    .flashcard-card__divider {
      padding: 0.75rem;
      background: linear-gradient(
        180deg,
        var(--color-shade) 0%,
        var(--color-card) 100%
      );
    }

    .flashcard-card__divider svg {
      transform: rotate(90deg);
    }
  }

  /* Card footer */
  .flashcard-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.875rem 1.5rem;
    background: var(--color-shade);
    border-block-start: 1px solid var(--color-ink-lightest);
  }

  .flashcard-card__meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: var(--text-small);
    color: var(--color-ink-medium);
  }

  .flashcard-card__time {
    opacity: 0.8;
  }

  /* Card actions */
  .flashcard-card__actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .flashcard-card__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5em;
    font-size: var(--text-small);
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: all 150ms ease;
  }

  .flashcard-card__btn--delete {
    background: transparent;
    color: var(--color-ink-medium);
  }

  .flashcard-card__btn--delete:hover {
    color: var(--color-negative);
    background: oklch(var(--lch-red-lightest));
  }

  /* ═══════════════════════════════════════════════════════════════════════════
     Pagination
     ═══════════════════════════════════════════════════════════════════════════ */

  .pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    padding: 1rem;
  }

  .pagination__link,
  .pagination__current,
  .pagination__gap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-inline-size: 2.25rem;
    block-size: 2.25rem;
    padding: 0.25rem 0.5rem;
    font-size: var(--text-small);
    font-weight: 500;
    border-radius: var(--radius-small);
    text-decoration: none;
    transition: all 150ms ease;
  }

  .pagination__link {
    color: var(--color-ink-medium);
    background: transparent;
  }

  .pagination__link:hover {
    color: var(--color-ink);
    background: var(--color-ink-lightest);
  }

  .pagination__current {
    color: var(--color-ink-inverted);
    background: var(--color-primary);
  }

  .pagination__gap {
    color: var(--color-ink-light);
  }

  .pagination__prev,
  .pagination__next {
    padding: 0.25rem 0.75rem;
  }

  .pagination__prev--disabled,
  .pagination__next--disabled {
    color: var(--color-ink-lightest);
    pointer-events: none;
  }

  /* ═══════════════════════════════════════════════════════════════════════════
     Study Session
     ═══════════════════════════════════════════════════════════════════════════ */

  .study-session {
    max-inline-size: 40rem;
    margin-inline: auto;
    padding-block: 2rem 4rem;
    padding-inline: var(--main-padding);
  }

  .study-session__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-block-end: 2rem;
  }

  .study-session__progress {
    font-size: var(--text-large);
    font-weight: 600;
    color: var(--color-ink);
  }

  .study-session__cards {
    position: relative;
    min-block-size: 300px;
  }

  /* Individual flashcard */
  .flashcard {
    background: var(--color-card);
    border: 1px solid var(--color-ink-lightest);
    border-radius: 1.25rem;
    box-shadow:
      0 0 0 1px oklch(var(--lch-black) / 3%),
      0 4px 16px oklch(var(--lch-black) / 8%);
    overflow: hidden;
  }

  .flashcard[hidden] {
    display: none;
  }

  .flashcard__inner {
    min-block-size: 200px;
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    user-select: none;
    transition: background 150ms ease;
  }

  .flashcard__inner:hover {
    background: var(--color-ink-lightest);
  }

  .flashcard__side {
    font-size: var(--text-x-large);
    line-height: 1.4;
    text-align: center;
  }

  .flashcard__side[hidden] {
    display: none;
  }

  .flashcard__side--front {
    font-weight: 600;
    color: var(--color-ink);
  }

  .flashcard__side--back {
    color: var(--color-link);
  }

  .flashcard__actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    padding: 1.5rem;
    background: var(--color-shade);
    border-block-start: 1px solid var(--color-ink-lightest);
  }

  /* Completion screen */
  .study-session__complete {
    text-align: center;
    padding: 4rem 2rem;
  }

  .study-session__complete[hidden] {
    display: none;
  }

  .study-session__complete h2 {
    font-size: var(--text-xx-large);
    margin-block-end: 0.5rem;
    color: var(--color-positive);
  }

  .study-session__complete p {
    color: var(--color-ink-dark);
    margin-block-end: 2rem;
  }

  /* ═══════════════════════════════════════════════════════════════════════════
     Preview Modal (generated flashcards)
     ═══════════════════════════════════════════════════════════════════════════ */

  .flashcards-preview {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .flashcard-preview-item {
    padding: 1rem;
    background: var(--color-shade);
    border-radius: 0.75rem;
    border-inline-start: 3px solid var(--color-link);
  }

  .flashcard-preview__front {
    font-weight: 500;
    margin-block-end: 0.375rem;
    color: var(--color-ink);
  }

  .flashcard-preview__back {
    color: var(--color-ink-dark);
    font-size: 0.9em;
  }

  /* ═══════════════════════════════════════════════════════════════════════════
     Settings Card Extensions
     ═══════════════════════════════════════════════════════════════════════════ */

  .settings-card__item--primary {
    background: var(--color-link);
    color: var(--color-ink-inverted);
  }

  .settings-card__item--primary:hover {
    background: var(--color-link);
    filter: brightness(0.95);
  }

  .settings-card__item--primary .settings-card__item-icon {
    color: var(--color-ink-inverted);
  }

  .settings-card__item--primary .settings-card__chevron {
    color: var(--color-ink-inverted);
    opacity: 0.7;
  }

  .settings-card__badge {
    font-size: 0.8em;
    font-weight: 400;
    opacity: 0.85;
    margin-inline-start: 0.5em;
  }
}