@layer components {
  /* ==========================================================================
     Collapsible Section - <details> styled like .rd-card
     ========================================================================== */

  .collapsible-section {
    background: var(--rd-bg-raised);
    border: 1px solid var(--rd-border);
    border-radius: var(--rd-radius-lg);
    overflow: hidden;

    & > summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 16px;
      cursor: pointer;
      user-select: none;
      list-style: none;
      gap: 12px;
      border-bottom: 1px solid transparent;
      transition: border-color var(--rd-dur-fast) var(--rd-ease);

      &::-webkit-details-marker {
        display: none;
      }

      &::before {
        content: "";
        display: inline-block;
        width: 7px;
        height: 7px;
        border-right: 1.5px solid var(--rd-fg-muted);
        border-bottom: 1.5px solid var(--rd-fg-muted);
        transform: rotate(-45deg);
        transition: transform 0.2s ease;
        flex-shrink: 0;
        margin-right: 4px;
      }

      &:hover {
        background: var(--rd-bg-hover);
      }
    }

    &[open] > summary {
      border-bottom-color: var(--rd-border);

      &::before {
        transform: rotate(45deg);
      }
    }
  }

  .collapsible-section__title {
    font-family: var(--rd-font-sans);
    font-size: var(--rd-text-base);
    font-weight: 600;
    letter-spacing: -0.005em;
    text-transform: none;
    line-height: 1.3;
    flex: 1;
    color: var(--rd-fg);
    margin: 0;
  }

  .collapsible-section__badge {
    font-size: var(--rd-text-xs);
    color: var(--rd-fg-muted);
    font-family: var(--rd-font-sans);
  }

  /* ==========================================================================
     Connection Status - Compact horizontal grid
     ========================================================================== */

  .connection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;

    dt {
      font-size: var(--rd-text-xs);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--rd-fg-muted);
      margin-bottom: 4px;
      font-weight: 600;
    }

    dd {
      font-size: var(--rd-text-sm);
      color: var(--rd-fg);
      margin: 0;
    }
  }

  .connection-grid__select {
    width: 100%;
  }

  /* ==========================================================================
     Sync Panel - Combined sync controls
     ========================================================================== */

  .sync-panel {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .sync-panel__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
  }

  .sync-panel__actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
  }

  .sync-stats {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
  }

  .sync-stat {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: var(--rd-text-sm);
    color: var(--rd-fg);

    .sync-stat__value {
      font-weight: 600;
      font-size: var(--rd-text-base);
    }

    .sync-stat__label {
      color: var(--rd-fg-muted);
    }

    .sync-stat__icon {
      display: flex;
      align-items: center;
      color: var(--rd-fg-muted);
    }
  }

  /* ==========================================================================
     Nested card-tables layout inside Card Tables collapsible
     ========================================================================== */

  .basecamp-settings-subcard {
    border: 1px solid var(--rd-border);
    border-radius: var(--rd-radius-md);
    background: var(--rd-bg-sunken);
    overflow: hidden;
  }

  .basecamp-settings-subcard + .basecamp-settings-subcard {
    margin-top: 12px;
  }

  .basecamp-settings-subcard__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    gap: 12px;
    border-bottom: 1px solid var(--rd-border);
  }

  .basecamp-settings-subcard__title {
    font-family: var(--rd-font-sans);
    font-size: var(--rd-text-base);
    font-weight: 600;
    letter-spacing: -0.005em;
    line-height: 1.3;
    color: var(--rd-fg);
    margin: 0;
    text-transform: none;
  }

  .basecamp-settings-subcard__body {
    padding: 12px 14px;
  }

  .basecamp-settings-subcard__body-flush {
    padding: 0;
  }

  /* ==========================================================================
     Todolists inline manager (inside redesign collapsible)
     ========================================================================== */

  .todolist-manager__inline-input {
    max-width: 260px;
  }

  /* ==========================================================================
     Disconnect footer - compact
     ========================================================================== */

  .disconnect-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 16px;
    border: 1px solid var(--rd-border);
    border-radius: var(--rd-radius-lg);
    background: var(--rd-bg-raised);
    flex-wrap: wrap;

    p {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: var(--rd-text-sm);
      color: var(--rd-fg-muted);
      margin: 0;
      flex: 1;
      min-width: 200px;
    }
  }
}