/* Text Difference Checker Styles */

/* Settings Grid */
.diff-settings {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    align-items: end;
}

/* Checkbox Styling */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.checkbox-label:hover {
    background-color: var(--bg-tertiary);
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    position: relative;
    transition: var(--transition);
    flex-shrink: 0;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: bold;
}

/* Text Input Container */
.text-input-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
}

.text-pane {
    display: flex;
    flex-direction: column;
}

.pane-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

.pane-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pane-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

.input-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.text-input {
    flex: 1;
    min-height: 300px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    resize: vertical;
}

.input-stats {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.stat-item {
    font-weight: 500;
}

.stat-item span {
    font-weight: 700;
    color: var(--primary-color);
}

/* Swap Divider */
.swap-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 0;
}

.swap-btn {
    background: var(--primary-color);
    color: var(--text-inverse);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    font-size: 1.25rem;
}

.swap-btn:hover {
    background: var(--primary-hover);
    transform: rotate(180deg) scale(1.1);
    box-shadow: var(--shadow-lg);
}

/* View Controls */
.view-controls {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

/* Statistics Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-card.additions {
    border-left: 4px solid var(--success-color);
}

.stat-card.deletions {
    border-left: 4px solid var(--error-color);
}

.stat-card.modifications {
    border-left: 4px solid var(--warning-color);
}

.stat-card.similarity {
    border-left: 4px solid var(--info-color);
}

.stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: bold;
    color: white;
    flex-shrink: 0;
}

.stat-card.additions .stat-icon {
    background: var(--success-color);
}

.stat-card.deletions .stat-icon {
    background: var(--error-color);
}

.stat-card.modifications .stat-icon {
    background: var(--warning-color);
}

.stat-card.similarity .stat-icon {
    background: var(--info-color);
}

.stat-content {
    flex: 1;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Diff Viewer */
.diff-viewer {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin: 2rem 0;
    overflow: hidden;
}

.diff-container {
    max-height: 500px;
    overflow-y: auto;
    padding: 1rem;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.5;
}

.diff-line {
    display: flex;
    padding: 0.25rem 0.5rem;
    margin: 1px 0;
    border-radius: var(--radius-sm);
}

.line-number {
    width: 40px;
    text-align: right;
    color: var(--text-muted);
    font-size: 0.75rem;
    padding-right: 0.75rem;
    border-right: 1px solid var(--border-color);
    margin-right: 0.75rem;
    flex-shrink: 0;
}

.line-content {
    flex: 1;
    white-space: pre-wrap;
    word-break: break-all;
}

.diff-line.addition {
    background-color: rgba(34, 197, 94, 0.1);
    border-left: 3px solid var(--success-color);
}

.diff-line.deletion {
    background-color: rgba(239, 68, 68, 0.1);
    border-left: 3px solid var(--error-color);
}

.diff-line.modification {
    background-color: rgba(245, 158, 11, 0.1);
    border-left: 3px solid var(--warning-color);
}

.diff-line.unchanged {
    background-color: transparent;
}

.highlighted-addition {
    background-color: rgba(34, 197, 94, 0.3);
    padding: 2px 4px;
    border-radius: var(--radius-sm);
}

.highlighted-deletion {
    background-color: rgba(239, 68, 68, 0.3);
    padding: 2px 4px;
    border-radius: var(--radius-sm);
    text-decoration: line-through;
}

.highlighted-modification {
    background-color: rgba(245, 158, 11, 0.3);
    padding: 2px 4px;
    border-radius: var(--radius-sm);
}

/* Side-by-side view */
.diff-side-by-side {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.diff-side {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.diff-side-header {
    background: var(--bg-secondary);
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    color: var(--text-primary);
}

/* Export Section */
.export-section {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.export-section h3 {
    margin: 0 0 1rem 0;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
}

.export-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: center;
}

/* Sample Cards */
.samples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.sample-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: var(--transition);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.sample-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.sample-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: block;
}

.sample-card h3 {
    margin: 0 0 0.5rem 0;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
}

.sample-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.sample-preview {
    background: var(--bg-tertiary);
    padding: 0.75rem;
    border-radius: var(--radius-md);
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.sample-preview code {
    background: none;
    padding: 0;
    color: var(--primary-color);
}

/* Placeholder Text */
.placeholder-text {
    color: var(--text-muted);
    padding: 2rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .text-input-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .swap-divider {
        transform: rotate(90deg);
        padding: 1rem 0;
    }
    
    .diff-side-by-side {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}

@media (max-width: 768px) {
    .settings-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .pane-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .pane-actions {
        justify-content: center;
    }
    
    .export-actions {
        justify-content: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .samples-grid {
        grid-template-columns: 1fr;
    }
    
    .text-input {
        min-height: 200px;
    }
    
    .input-stats {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .diff-settings,
    .view-controls,
    .export-section {
        padding: 1rem;
    }
    
    .stat-card {
        padding: 1rem;
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }
    
    .stat-icon {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .stat-number {
        font-size: 1.25rem;
    }
    
    .sample-card {
        padding: 1rem;
    }
    
    .swap-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

/* Print Styles */
@media print {
    .pane-actions,
    .export-actions,
    .btn,
    .swap-btn {
        display: none !important;
    }
    
    .diff-container {
        max-height: none;
        overflow: visible;
    }
    
    .text-input-container {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    
    .page-wrapper {
        box-shadow: none;
    }
}