/* ============================================
   DIFF EDIT SYSTEM STYLES
   Styles for the diff-based card editing UI
   ============================================ */

/* ============================================
   DIFF DRAFT VIEW
   ============================================ */

.diff-draft {
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin: var(--space-3) 0;
    background: var(--main-background-color);
}

.diff-draft__header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--main-background-color-secondary);
    border-bottom: var(--border-width) solid var(--border-color);
    font-weight: var(--weight-semibold);
    color: var(--color-ink);
}

.diff-draft__header-icon {
    display: none;
    font-size: 1.2em;
}

.diff-draft__entity-id {
    display: none;
    font-size: var(--text-xs);
    color: var(--color-ink-lighter);
    font-family: var(--font-mono);
    margin-right: auto;
}

.diff-draft__changes {
    max-height: 400px;
    overflow-y: auto;
}

/* Individual change blocks */
.diff-change {
    border-bottom: var(--border-width) solid var(--border-color);
    padding: var(--space-2) var(--space-3);
    transition: opacity var(--transition-base);
}

.diff-change:last-child {
    border-bottom: none;
}

.diff-change--rejected {
    opacity: 0.4;
    background: var(--main-background-color-secondary);
}

.diff-change__header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-1);
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--color-ink);
}

.diff-change__toggle {
    cursor: pointer;
    width: 18px;
    height: 18px;
    accent-color: var(--color-accent);
}

.diff-change__field {
    font-family: var(--font-mono);
    color: var(--color-ink-light);
    font-size: var(--text-xs);
    background: var(--main-background-color-third);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.diff-change__content {
    margin-top: var(--space-2);
    background: var(--main-background-color-secondary);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

/* Diff lines */
.diff-line {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    line-height: var(--leading-relaxed);
    padding: 2px var(--space-2);
    white-space: pre-wrap;
    word-break: break-word;
    display: flex;
    align-items: flex-start;
    gap: var(--space-1);
}

.diff-line--removed {
    background: var(--color-error-bg);
    border-left: 3px solid var(--color-error);
}

.diff-line--added {
    background: var(--color-success-bg);
    border-left: 3px solid var(--color-success);
}

.diff-line--context {
    background: var(--main-background-color);
    color: var(--color-ink-lighter);
}

.diff-line__prefix {
    flex-shrink: 0;
    width: 2ch;
    text-align: center;
    color: var(--color-ink-lighter);
    user-select: none;
}

.diff-line--removed .diff-line__prefix {
    color: var(--color-error);
}

.diff-line--added .diff-line__prefix {
    color: var(--color-success);
}

.diff-line__number {
    display: inline-block;
    width: 3ch;
    text-align: right;
    margin-right: var(--space-1);
    color: var(--color-ink-lighter);
    flex-shrink: 0;
    user-select: none;
}

.diff-line__content {
    flex: 1;
    min-width: 0;
}

/* Warnings */
.diff-draft__warnings {
    padding: var(--space-2) var(--space-3);
    background: var(--color-cleanup-bg);
    color: var(--color-cleanup);
    font-size: var(--text-sm);
    border-top: var(--border-width) solid var(--border-color);
}

.diff-draft__warnings .warning-item {
    margin-top: var(--space-1);
    padding-left: var(--space-2);
}

/* Conflict warning */
.diff-draft__conflict-warning {
    padding: var(--space-2) var(--space-3);
    background: var(--color-cleanup-bg);
    color: var(--color-cleanup);
    font-size: var(--text-sm);
    border-top: var(--border-width) solid var(--color-cleanup);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.diff-draft__conflict-warning .warning-icon {
    font-size: 1.2em;
}

/* Actions */
.diff-draft__actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--main-background-color-third);
    border-top: var(--border-width) solid var(--border-color);
}

.diff-draft__actions button {
    flex: 1;
}

.action-ghost {
    display: none;
}


/* View full card button */
.diff-draft__view-full {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    background: var(--main-background-color);
    border-top: var(--border-width) solid var(--border-color);
    color: var(--color-ink-light);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: background var(--transition-base), color var(--transition-base);
}

.diff-draft__view-full:hover {
    background: var(--main-background-color-third);
    color: var(--color-ink);
}

/* ============================================
   SCOPED VIEW INDICATOR
   ============================================ */

.scoped-view-notice {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--color-target-bg);
    border-bottom: var(--border-width) solid var(--border-color);
    font-size: var(--text-xs);
    color: var(--color-ink-light);
}

.scoped-view-notice__icon {
    color: var(--color-target);
}

.scoped-view-notice__fields {
    display: flex;
    gap: var(--space-1);
    flex-wrap: wrap;
}

.scoped-view-notice__field {
    background: var(--main-background-color-third);
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
}

.scoped-view-notice__omitted {
    color: var(--color-ink-lighter);
    font-style: italic;
}

/* ============================================
   CONTENT LINE PREVIEW
   ============================================ */

.content-lines-preview {
    max-height: 200px;
    overflow-y: auto;
    background: var(--main-background-color-secondary);
    border-radius: var(--radius-sm);
    padding: var(--space-2);
}

.content-line-item {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    line-height: var(--leading-relaxed);
    padding: 2px 0;
    display: flex;
    gap: var(--space-2);
}

.content-line-item__number {
    color: var(--color-ink-lighter);
    flex-shrink: 0;
    width: 3ch;
    text-align: right;
}

.content-line-item__content {
    flex: 1;
    white-space: pre-wrap;
    word-break: break-word;
    color: var(--color-ink-light);
}

/* Truncated HTML in diff lines */
.diff-line .truncated-html {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============================================
   TAG CHANGES DISPLAY
   ============================================ */

.tag-changes {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
}

.tag-change {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
}

.tag-change--add {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.tag-change--remove {
    background: var(--color-error-bg);
    color: var(--color-error);
    text-decoration: line-through;
}

.tag-change__prefix {
    font-weight: var(--weight-semibold);
}

/* ============================================
   SCALAR FIELD CHANGE DISPLAY
   ============================================ */

.scalar-change {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.scalar-change__old,
.scalar-change__new {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
}

.scalar-change__old {
    background: var(--color-error-bg);
}

.scalar-change__new {
    background: var(--color-success-bg);
}

.scalar-change__prefix {
    flex-shrink: 0;
    width: 2ch;
    font-weight: var(--weight-semibold);
}

.scalar-change__old .scalar-change__prefix {
    color: var(--color-error);
}

.scalar-change__new .scalar-change__prefix {
    color: var(--color-success);
}

.scalar-change__value {
    word-break: break-word;
    color: var(--color-ink);
}

/* ============================================
   STALE EDIT WARNING & RE-DRAFT UI
   ============================================ */

/* Stale edit warning */
.diff-draft__stale-warning {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--color-error-bg);
    border: 1px solid color-mix(in srgb, var(--color-error) 30%, transparent);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
}

.stale-warning-icon {
    flex-shrink: 0;
    color: var(--color-error);
    display: flex;
    align-items: flex-start;
}

.stale-warning-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.stale-warning-title {
    font-weight: var(--weight-semibold);
    color: var(--color-error);
    font-size: var(--text-base);
}

.stale-warning-message {
    color: var(--color-ink);
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
}

.stale-warning-suggestion {
    color: var(--color-ink-light);
    font-size: var(--text-sm);
    font-style: italic;
}

/* Stale edit actions */
.diff-draft__stale-actions {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.diff-draft__stale-actions .draft-action {
    flex: 1;
    min-width: 140px;
}

.diff-draft__stale-actions .action-primary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
}

.diff-draft__stale-actions .action-ghost {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--color-ink-light);
}

.diff-draft__stale-actions .action-ghost:hover {
    background: var(--main-background-color-third);
    border-color: var(--color-ink-lighter);
    color: var(--color-ink);
}