/* =================================================================
   DECK BUILDER - SENTENCE TOOLS STYLES
   Split from deck-builder.css for maintainability
   Contains: Sentence preview modal, sentence words editor,
             conversation zone builder, story zone builder,
             sentence pool builder
   ================================================================= */

/* =================================================================
   SENTENCE WORDS PREVIEW MODAL
   ================================================================= */

.sentence-preview-modal {
    z-index: 1100;
}

.sentence-preview-modal .preview-modal-content {
    max-width: 900px;
    width: 95%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.sentence-preview-modal .modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: 12px 12px 0 0;
}

.sentence-preview-modal .modal-header h2 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.sentence-preview-modal .close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.sentence-preview-modal .close-btn:hover {
    opacity: 1;
}

/* Preview Summary */
.preview-summary {
    display: flex;
    gap: 16px;
    padding: 16px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.summary-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 24px;
    background: var(--bg-primary);
    border-radius: 8px;
    min-width: 100px;
}

.summary-item .summary-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.summary-item .summary-label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.summary-item.success .summary-value {
    color: var(--success);
}

.summary-item.error .summary-value {
    color: var(--error);
}

/* Warning/Success messages */
.preview-warning,
.preview-success {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    margin: 0;
}

.preview-warning {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
    border-left: 4px solid #f59e0b;
}

.preview-success {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
    border-left: 4px solid #10b981;
}

.preview-warning i,
.preview-success i {
    font-size: 20px;
}

/* Tabs */
.preview-tabs {
    display: flex;
    gap: 4px;
    padding: 12px 24px 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
}

.preview-tab {
    padding: 10px 20px;
    border: none;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 8px 8px 0 0;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}

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

.preview-tab.active {
    background: var(--primary);
    color: white;
}

.preview-tab .tab-stats {
    display: flex;
    align-items: center;
}

.preview-tab .error-count {
    background: var(--error);
    color: white;
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 600;
}

.preview-tab.has-errors:not(.active) {
    border: 1px solid var(--error);
    border-bottom: none;
}

/* Panels */
.preview-panels {
    flex: 1;
    overflow-y: auto;
    padding: 16px 24px;
    background: var(--bg-primary);
}

.preview-panel {
    display: none;
}

.preview-panel.active {
    display: block;
}

/* Stats bar */
.preview-stats-bar {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    font-size: 14px;
}

.preview-stats-bar span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.text-success {
    color: var(--success);
}

.text-error {
    color: var(--error);
}

/* Preview sections */
.preview-section {
    margin-bottom: 24px;
}

.preview-section h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.preview-section h4.collapsible {
    cursor: pointer;
    user-select: none;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border-radius: 6px;
    transition: background 0.2s;
}

.preview-section h4.collapsible:hover {
    background: var(--bg-tertiary);
}

.collapse-hint {
    font-size: 11px;
    color: var(--text-tertiary);
    font-weight: 400;
    margin-left: auto;
}

.unmatched-section h4 {
    color: var(--error);
}

/* Preview table */
.preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.preview-table th,
.preview-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.preview-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 11px;
}

.preview-table tbody tr:hover {
    background: var(--bg-secondary);
}

.unmatched-row {
    background: rgba(239, 68, 68, 0.05);
}

.unmatched-row.corrected {
    background: rgba(16, 185, 129, 0.1);
}

.unmatched-row.corrected .original-word {
    text-decoration: line-through;
    opacity: 0.6;
}

.original-word {
    font-weight: 600;
    color: var(--text-primary);
}

.matched-card {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--success);
    font-weight: 500;
}

/* Card select dropdown */
.card-select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
}

.card-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.card-select optgroup {
    font-weight: 600;
    color: var(--text-secondary);
}

.card-select option {
    padding: 8px;
}

/* Modal footer */
.sentence-preview-modal .modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-radius: 0 0 12px 12px;
}

/* Responsive */
@media (max-width: 768px) {
    .sentence-preview-modal .preview-modal-content {
        width: 100%;
        max-height: 100vh;
        border-radius: 0;
    }

    .preview-summary {
        flex-wrap: wrap;
    }

    .summary-item {
        flex: 1;
        min-width: 80px;
        padding: 8px 12px;
    }

    .summary-item .summary-value {
        font-size: 20px;
    }

    .preview-tabs {
        flex-wrap: wrap;
    }

    .preview-table {
        font-size: 12px;
    }

    .preview-table th,
    .preview-table td {
        padding: 8px;
    }

    .card-select {
        font-size: 12px;
    }
}

/* Dark mode adjustments */
[data-theme="dark"] .preview-warning {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
}

[data-theme="dark"] .preview-success {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
}

[data-theme="dark"] .unmatched-row {
    background: rgba(239, 68, 68, 0.1);
}

[data-theme="dark"] .unmatched-row.corrected {
    background: rgba(16, 185, 129, 0.15);
}

/* =================================================================
   SENTENCE WORDS EDITOR STYLES
   ================================================================= */

/* Tab Navigation */
.sentence-words-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0;
}

.sw-tab-btn {
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: -2px;
}

.sw-tab-btn:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.sw-tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: transparent;
}

.sw-tab-content {
    display: none;
}

.sw-tab-content.active {
    display: block;
}

/* Editor Controls */
.sw-editor-controls {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 16px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.sw-editor-selects {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.sw-editor-actions {
    display: flex;
    gap: 8px;
}

/* Editor Content */
.sw-editor-content {
    min-height: 200px;
}

.sw-editor-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    color: var(--text-secondary);
    text-align: center;
    gap: 12px;
}

.sw-editor-empty i {
    font-size: 48px;
    opacity: 0.5;
}

/* Collapsible Lessons List */
.sw-lessons-list {
    min-height: 200px;
    max-height: 600px;
    overflow-y: auto;
}

.sw-lesson-item {
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.sw-lesson-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    cursor: pointer;
    transition: background 0.2s;
}

.sw-lesson-header:hover {
    background: var(--bg-tertiary);
}

.sw-lesson-header .expand-icon {
    color: var(--primary);
    font-size: 1rem;
}

.sw-lesson-header .lesson-title {
    font-weight: 600;
    flex: 1;
}

.sw-lesson-header .word-type-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.sw-lesson-header .edited-badge {
    background: var(--warning);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
}

.sw-lesson-content {
    padding: 0 16px 16px;
}

.sw-lesson-content.hidden {
    display: none;
}

.sw-no-word-types {
    color: var(--text-secondary);
    font-style: italic;
    padding: 12px 0;
    text-align: center;
}

.sw-word-types-list {
    padding-left: 8px;
}

/* Word Type Sections */
.sw-word-type-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
}

.sw-type-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

.sw-collapse-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: var(--text-secondary);
    transition: transform 0.2s;
}

.sw-word-type-section.collapsed .sw-collapse-btn i {
    transform: rotate(-90deg);
}

.sw-word-type-section.collapsed .sw-type-body {
    display: none;
}

.sw-type-name {
    font-weight: 600;
    font-size: 15px;
    color: var(--text-primary);
}

.sw-type-count {
    color: var(--text-secondary);
    font-size: 13px;
}

.sw-type-delete {
    margin-left: auto;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s;
}

.sw-type-delete:hover {
    color: var(--error);
    background: rgba(239, 68, 68, 0.1);
}

.sw-type-body {
    padding: 16px;
}

/* Word Chips */
.sw-word-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.sw-word-chip {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 8px 6px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 13px;
    transition: all 0.2s;
}

.sw-word-chip.valid {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}

.sw-word-chip.invalid {
    border-color: var(--error);
    background: rgba(239, 68, 68, 0.1);
}

.sw-word-chip:hover {
    box-shadow: var(--shadow-sm);
}

.sw-chip-text {
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 4px;
}

.sw-chip-text:hover {
    background: var(--bg-secondary);
}

.sw-chip-delete {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1;
    padding: 2px 4px;
    border-radius: 50%;
    transition: all 0.2s;
}

.sw-chip-delete:hover {
    color: var(--error);
    background: rgba(239, 68, 68, 0.2);
}

.sw-add-word-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px dashed var(--border-color);
    background: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.sw-add-word-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

/* Card Preview Tooltip */
.sw-card-preview {
    position: fixed;
    z-index: 1000;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    padding: 8px;
    display: flex;
    gap: 12px;
    align-items: center;
    max-width: 280px;
    pointer-events: none;
}

.sw-card-preview.hidden {
    display: none;
}

.sw-preview-image {
    width: 60px;
    height: 60px;
    border-radius: 4px;
    overflow: hidden;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.sw-preview-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sw-preview-info {
    flex: 1;
    min-width: 0;
}

.sw-preview-word {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.sw-preview-english {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .sw-editor-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .sw-editor-selects {
        flex-direction: column;
    }

    .sw-editor-actions {
        justify-content: flex-end;
    }

    .sw-tab-btn {
        padding: 10px 14px;
        font-size: 13px;
    }
}

/* =================================================================
   CONVERSATION ZONE BUILDER STYLES
   ================================================================= */

/* CSV Upload Area */
.cz-csv-upload-area,
.sz-csv-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    margin: 16px 0;
}

.cz-csv-upload-area:hover,
.sz-csv-upload-area:hover,
.cz-csv-upload-area.dragover,
.sz-csv-upload-area.dragover {
    border-color: var(--primary);
    background: rgba(var(--primary-rgb), 0.05);
}

.cz-csv-upload-area i,
.sz-csv-upload-area i {
    font-size: 48px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.cz-csv-file-input,
.sz-csv-file-input {
    display: none;
}

.cz-csv-file-info,
.sz-csv-file-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin: 16px 0;
}

.cz-csv-file-info i,
.sz-csv-file-info i {
    color: var(--success);
    font-size: 24px;
}

.cz-csv-remove-btn,
.sz-csv-remove-btn {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--error);
    cursor: pointer;
    padding: 4px 8px;
}

.cz-import-actions,
.sz-import-actions {
    margin-top: 12px;
}

/* Preview Sections */
.cz-builder-preview,
.sz-builder-preview {
    margin: 20px 0;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

/* Scrollable preview content */
#szPreviewContent,
#czPreviewContent {
    max-height: 60vh;
    overflow-y: auto;
    margin-bottom: 16px;
    padding-right: 8px;
}

.cz-preview-conversation,
.sz-preview-story {
    margin: 12px 0;
    padding: 12px;
    background: var(--bg-primary);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.cz-preview-header,
.sz-preview-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.cz-preview-header .pair-count,
.sz-preview-header .sentence-count {
    margin-left: auto;
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    padding: 2px 8px;
    border-radius: 4px;
}

.cz-preview-pairs,
.sz-preview-sentences {
    font-size: 13px;
}

.cz-preview-pair {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
    border-bottom: 1px solid var(--border-color);
}

.cz-preview-pair:last-child {
    border-bottom: none;
}

.pair-q {
    color: var(--primary);
}

.pair-a {
    color: var(--success);
    padding-left: 16px;
}

.sz-preview-sentence {
    display: flex;
    gap: 8px;
    padding: 6px 0;
    border-bottom: 1px solid var(--border-color);
}

.sz-preview-sentence:last-child {
    border-bottom: none;
}

.sz-preview-sentence .position {
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 24px;
}

.cz-preview-actions,
.sz-preview-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

/* Conversations/Stories List */
.cz-conversations-list,
.sz-stories-list {
    margin: 16px 0;
}

.cz-conversation-item,
.sz-story-item {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
}

.cz-conversation-header,
.sz-story-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: background 0.2s ease;
}

.cz-conversation-header:hover,
.sz-story-header:hover {
    background: var(--bg-tertiary);
}

.cz-conversation-header .expand-icon,
.sz-story-header .expand-icon {
    color: var(--text-secondary);
}

.cz-conversation-header .conv-title,
.sz-story-header .story-title {
    font-weight: 600;
    flex: 1;
}

.cz-conversation-header .conv-lesson,
.sz-story-header .story-lesson {
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--bg-primary);
    padding: 2px 8px;
    border-radius: 4px;
}

.cz-conversation-header .pair-count,
.sz-story-header .sentence-count {
    font-size: 12px;
    color: var(--text-secondary);
}

.sz-story-header .form-type-badge {
    font-size: 11px;
    background: var(--primary);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 500;
}

.sz-story-header .blanks-info {
    font-size: 11px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 4px;
}

.sz-preview-header .form-type-badge {
    font-size: 11px;
    background: var(--primary);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 8px;
}

.form-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
    font-style: italic;
}

.edited-badge {
    font-size: 11px;
    background: var(--warning);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
}

.cz-conversation-content,
.sz-story-content {
    padding: 16px;
    background: var(--bg-primary);
}

.cz-empty-state,
.sz-empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

.cz-empty-state i,
.sz-empty-state i {
    font-size: 48px;
    margin-bottom: 12px;
}

/* Q&A Pairs List */
.cz-pairs-list {
    margin-bottom: 12px;
}

.cz-pair-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

.cz-pair-item:last-of-type {
    border-bottom: none;
}

.cz-pair-num {
    font-weight: 700;
    color: var(--text-secondary);
    min-width: 24px;
}

.cz-pair-content {
    flex: 1;
}

.cz-pair-question,
.cz-pair-answer {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 4px;
}

.cz-pair-question .pair-label {
    font-weight: 600;
    color: var(--primary);
    min-width: 24px;
}

.cz-pair-answer .pair-label {
    font-weight: 600;
    color: var(--success);
    min-width: 24px;
}

.cz-pair-question .pair-text,
.cz-pair-answer .pair-text {
    flex: 1;
}

.cz-pair-question .pair-num,
.cz-pair-answer .pair-num {
    font-size: 11px;
    color: var(--text-secondary);
}

.cz-pair-actions {
    display: flex;
    gap: 4px;
}

.cz-add-pair {
    margin-top: 12px;
}

/* Story Sentences List */
.sz-sentences-list {
    margin-bottom: 12px;
}

.sz-sentence-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-bottom: 8px;
    background: var(--bg-primary);
    transition: box-shadow 0.2s ease;
}

.sz-sentence-item:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.sz-sentence-item.sortable-ghost {
    opacity: 0.5;
    background: var(--primary-light);
}

.sz-drag-handle {
    cursor: grab;
    color: var(--text-secondary);
    padding: 4px;
}

.sz-drag-handle:active {
    cursor: grabbing;
}

.sz-position {
    font-weight: 700;
    color: var(--text-secondary);
    min-width: 24px;
}

.sz-sentence-text {
    flex: 1;
}

.sz-sentence-num {
    font-size: 11px;
    color: var(--text-secondary);
}

.sz-remove-sentence {
    opacity: 0.5;
}

.sz-sentence-item:hover .sz-remove-sentence {
    opacity: 1;
}

.sz-add-sentence {
    margin-top: 12px;
}

/* Pair Editor Modal */
.cz-pair-modal .modal-content {
    max-width: 600px;
}

.cz-pair-modal .form-group {
    margin-bottom: 16px;
}

.cz-pair-modal .form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
}

.cz-pair-modal .mt-2 {
    margin-top: 8px;
}

/* Sentence Picker Modal */
.sz-sentence-modal .modal-content {
    max-width: 700px;
}

.sz-sentence-options {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-top: 8px;
}

.sz-sentence-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.15s ease;
}

.sz-sentence-option:last-child {
    border-bottom: none;
}

.sz-sentence-option:hover {
    background: var(--bg-secondary);
}

.sz-sentence-option.selected {
    background: var(--primary-light);
    border-color: var(--primary);
}

.sz-sentence-option .num {
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 40px;
}

.sz-sentence-option .text {
    flex: 1;
}

.sz-sentence-option .type {
    font-size: 11px;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
}

.sz-sentence-modal .mt-3 {
    margin-top: 16px;
}

/* Import description */
.import-description {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

/* No pairs/sentences message */
.cz-no-pairs,
.sz-no-sentences {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
    .cz-conversation-header,
    .sz-story-header {
        flex-wrap: wrap;
    }

    .cz-pair-item {
        flex-direction: column;
    }

    .cz-pair-actions {
        align-self: flex-end;
    }
}

/* =================================================================
   SENTENCE POOL BUILDER STYLES
   ================================================================= */

/* CSV Upload */
.sp-csv-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 16px;
}

.sp-csv-upload-area:hover,
.sp-csv-upload-area.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.sp-csv-upload-area i {
    font-size: 32px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.sp-csv-file-input {
    display: none;
}

.sp-csv-file-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-radius: 6px;
    margin-bottom: 16px;
}

.sp-csv-file-info i {
    color: var(--success);
    font-size: 24px;
}

.sp-csv-remove-btn {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    padding: 4px 8px;
}

.sp-import-actions {
    margin-top: 16px;
}

/* Preview Section */
.sp-builder-preview {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
}

.sp-preview-list {
    max-height: 300px;
    overflow-y: auto;
}

.sp-preview-item {
    display: grid;
    grid-template-columns: 60px 1fr 150px 80px 60px;
    gap: 12px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
    align-items: center;
}

.sp-preview-item:last-child {
    border-bottom: none;
}

.sp-preview-item.new {
    background: rgba(40, 167, 69, 0.1);
}

.sp-preview-item.update {
    background: rgba(255, 193, 7, 0.1);
}

.sp-preview-item .preview-num {
    font-weight: 600;
    color: var(--text-secondary);
}

.sp-preview-item .preview-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sp-preview-item .preview-english {
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sp-preview-item .preview-type {
    font-size: 11px;
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: 4px;
    text-align: center;
}

.sp-preview-item .preview-status {
    font-size: 11px;
    font-weight: 600;
}

.sp-preview-item.new .preview-status {
    color: var(--success);
}

.sp-preview-item.update .preview-status {
    color: var(--warning);
}

.sp-preview-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

/* Filter Bar */
.sp-filter-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.sp-filter-bar input {
    flex: 1;
}

.sp-filter-bar select {
    width: 150px;
}

/* Sentences List */
.sp-sentences-list {
    max-height: 500px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.sp-sentence-item {
    display: flex;
    flex-direction: column;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.15s ease;
}

.sp-sentence-item:last-child {
    border-bottom: none;
}

.sp-sentence-item:hover {
    background: var(--bg-secondary);
}

/* Header row */
.sp-sentence-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.sp-sentence-num {
    font-weight: 600;
    color: var(--primary);
    min-width: 40px;
}

/* Body section */
.sp-sentence-body {
    display: flex;
    flex-direction: column;
    width: 100%;
}

.sp-sentence-text-block {
    margin-bottom: 8px;
}

.sp-sentence-text {
    font-weight: 500;
    margin-bottom: 4px;
}

.sp-sentence-english {
    font-size: 13px;
    color: var(--text-secondary);
}

.sp-sentence-english em {
    font-style: italic;
    color: var(--text-tertiary);
}

.sp-sentence-type {
    font-size: 11px;
    padding: 4px 8px;
    border-radius: 4px;
    text-align: center;
    font-weight: 500;
}

.sp-sentence-type.type-question {
    background: rgba(0, 123, 255, 0.15);
    color: var(--info);
}

.sp-sentence-type.type-answer {
    background: rgba(40, 167, 69, 0.15);
    color: var(--success);
}

.sp-sentence-type.type-statement {
    background: rgba(108, 117, 125, 0.15);
    color: var(--text-secondary);
}

.sp-sentence-type.type-command {
    background: #7C3AED;
    color: white;
}

.sp-sentence-type.type-conversation {
    background: #0891B2;
    color: white;
}

.sp-sentence-usage {
    font-size: 12px;
    color: var(--text-secondary);
}

.sp-sentence-status {
    display: flex;
    gap: 6px;
}

.sp-sentence-status .badge {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
}

.sp-sentence-status .badge-new {
    background: var(--success);
    color: white;
}

.sp-sentence-status .badge-edited {
    background: var(--warning);
    color: #333;
}

.sp-sentence-actions {
    display: flex;
    gap: 6px;
}

/* Empty State */
.sp-empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

.sp-empty-state i {
    font-size: 32px;
    margin-bottom: 12px;
    color: var(--text-tertiary);
}

/* Sentence Count */
.sp-sentence-count {
    font-weight: normal;
    color: var(--text-secondary);
    margin-left: 8px;
}

/* Sentence Editor Modal */
.sp-sentence-modal .modal-content {
    max-width: 600px;
}

.sp-sentence-modal .form-group {
    margin-bottom: 16px;
}

.sp-sentence-modal .form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
}

.sp-sentence-modal .form-group label .required {
    color: var(--danger);
}

.sp-sentence-modal textarea {
    resize: vertical;
}

/* Create New Sentence Section */
.create-new-sentence-section {
    text-align: center;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 16px;
}

.create-new-sentence-section .btn-block {
    width: 100%;
    padding: 12px;
    font-size: 15px;
}

.create-new-sentence-section .create-hint {
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

/* Section Divider */
.section-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 20px 0;
    color: var(--text-secondary);
    font-size: 13px;
}

.section-divider::before,
.section-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.section-divider span {
    padding: 0 16px;
}

/* Empty Pool Message */
.empty-pool-message {
    text-align: center;
    padding: 30px 20px;
    background: var(--bg-secondary);
    border-radius: 8px;
    color: var(--text-secondary);
}

.empty-pool-message i {
    font-size: 24px;
    margin-bottom: 8px;
    display: block;
}

/* Sentence Select Row */
.sentence-select-row {
    display: flex;
    gap: 8px;
    align-items: center;
}

.sentence-select-row select {
    flex: 1;
}

.sentence-select-row .btn-sm {
    flex-shrink: 0;
}

.no-sentences-hint {
    flex: 1;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border-radius: 6px;
    color: var(--text-secondary);
    font-style: italic;
}

/* Create Sentence Modal */
.sz-create-sentence-modal .modal-content,
.cz-create-sentence-modal .modal-content {
    max-width: 550px;
}

.sz-create-sentence-modal .form-group,
.cz-create-sentence-modal .form-group {
    margin-bottom: 16px;
}

.sz-create-sentence-modal .form-group label,
.cz-create-sentence-modal .form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
}

.sz-create-sentence-modal .form-group label .required,
.cz-create-sentence-modal .form-group label .required {
    color: var(--danger);
}

/* Responsive */
@media (max-width: 768px) {
    .sp-sentence-item {
        padding: 10px 12px;
    }

    .sp-sentence-header {
        flex-wrap: wrap;
        gap: 8px;
    }

    .sp-sentence-meta {
        margin-left: 0;
        width: 100%;
        justify-content: flex-end;
    }

    .sp-preview-item {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .sp-filter-bar {
        flex-direction: column;
    }

    .sp-filter-bar select {
        width: 100%;
    }

    .sentence-select-row {
        flex-direction: column;
        align-items: stretch;
    }

    .sentence-select-row .btn-sm {
        align-self: flex-start;
    }
}

/* =================================================================
   STORY ZONE BUILDER - WORD-PICTURE LAYOUT
   Styles for word bubbles and picture links in story zone cards
   ================================================================= */

/* Expanded sentence card layout */
.sz-sentence-item.expanded {
    flex-direction: column;
    align-items: stretch;
}

.sz-sentence-item.expanded .sz-sentence-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.sz-sentence-item.expanded .sz-sentence-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sz-sentence-text-line {
    font-weight: 500;
    font-size: 15px;
}

.sz-sentence-english {
    font-size: 13px;
    color: var(--text-secondary);
    font-style: italic;
}

/* Audio Badge */
.sz-audio-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 16px;
    font-size: 12px;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

.sz-audio-badge.has-audio {
    background: rgba(16, 185, 129, 0.15);
    color: #059669;
}

.sz-audio-badge.has-audio:hover {
    background: rgba(16, 185, 129, 0.25);
}

.sz-audio-badge.no-audio {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
}

.sz-audio-badge.no-audio:hover {
    background: rgba(239, 68, 68, 0.2);
}

.sz-audio-badge .audio-name {
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sz-audio-badge .no-audio-text {
    font-style: italic;
}

/* Word-Picture Layout Container */
.sz-word-picture-layout {
    position: relative;
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 12px;
    margin-top: 8px;
}

/* Container for word-picture pairs - wraps naturally */
.sz-word-picture-pairs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 4px;
    align-items: flex-start;
}

/* Each word-picture pair: word bubble on top, picture below (centered) */
.sz-word-picture-pair {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    /* Minimum width ensures picture card fits below short words */
    min-width: 68px;
}

/* Word Bubble - centered within pair, with minimum width for picture card */
.sz-word-bubble {
    position: relative;
    min-width: 60px;
    max-width: 150px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    justify-content: center;
    box-sizing: border-box;
}

.sz-word-bubble:hover {
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.sz-word-bubble.has-link {
    background: #DCFCE7;
    border-color: #22C55E;
}

.sz-word-bubble.no-link {
    background: #FEF3C7;
    border-color: #F59E0B;
    border-style: dashed;
}

.sz-word-bubble .sz-bubble-text {
    font-weight: 500;
    max-width: 100px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sz-word-bubble .sz-link-icon {
    font-size: 10px;
    opacity: 0.6;
}

.sz-word-bubble.has-link .sz-link-icon {
    color: #22C55E;
}

.sz-word-bubble.no-link .sz-link-icon {
    color: #F59E0B;
}

/* Picture Slot - centered below word bubble */
.sz-picture-slot {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    overflow: hidden;
    background: var(--bg-tertiary);
    flex-shrink: 0;
    position: relative;
}

.sz-slot-card {
    width: 100%;
    height: 100%;
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid #22C55E;
    box-sizing: border-box;
}

.sz-picture-slot img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Duplicate card (already shown elsewhere) - hidden but maintains spacing */
.sz-picture-slot.duplicate {
    visibility: hidden;
}

.sz-picture-slot.no-link {
    border: 2px dashed var(--border-color);
    background: transparent;
}

/* Legacy support - hide old SVG connection lines if present */
.sz-connection-lines {
    display: none;
}

/* Legacy support - hide old separate rows if present */
.sz-bubbles-row,
.sz-pictures-row {
    display: none;
}

.sz-multi-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    background: var(--primary);
    color: white;
    font-size: 10px;
    font-weight: 600;
    padding: 1px 5px;
    border-radius: 10px;
}

/* No words message */
.sz-no-words {
    color: var(--text-secondary);
    font-style: italic;
    font-size: 13px;
    padding: 8px 0;
}

/* Responsive */
@media (max-width: 768px) {
    .sz-sentence-item.expanded .sz-sentence-header {
        flex-wrap: wrap;
    }

    .sz-word-bubble {
        padding: 4px 10px;
        font-size: 12px;
    }

    .sz-picture-slot {
        width: 50px;
        height: 50px;
    }

    .sz-audio-badge .audio-name {
        max-width: 60px;
    }
}