.text-case-converter-tool {
    padding: 1rem 0;
}

/* Макет с тремя панелями */
.converter-layout {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

.converter-left-panel,
.converter-center-panel,
.converter-right-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.converter-center-panel {
    min-width: 250px;
    max-width: 350px;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    align-self: start;
}

.converter-center-panel h3 {
    margin: 0 0 1rem 0;
    font-size: 1.125rem;
    color: var(--text-color);
}

/* Статистика ввода/вывода */
.input-stats,
.output-stats {
    display: flex;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.input-stats strong,
.output-stats strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* Кнопки форматов (4x3 сетка) */
.format-buttons-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin: 1.5rem 0;
}

.format-btn {
    padding: 1rem 0.75rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    text-align: center;
    min-height: 80px;
}

.format-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.format-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.format-icon {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'Courier New', monospace;
}

.format-label {
    font-size: 0.75rem;
    font-weight: 500;
}

/* Предпросмотр */
.preview-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.preview-original,
.preview-result {
    padding: 1rem;
    background: var(--bg-color);
    border-radius: var(--border-radius);
    border: 2px solid var(--border-color);
    word-wrap: break-word;
    line-height: 1.6;
    min-height: 60px;
    max-height: 200px;
    overflow-y: auto;
}

.preview-original {
    text-decoration: line-through;
    color: var(--text-secondary);
    opacity: 0.7;
}

.preview-result {
    color: #10b981;
    font-weight: 500;
}

.preview-arrow {
    text-align: center;
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
}

/* Дополнительные трансформации */
.transform-section {
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.transform-section h4 {
    margin: 0 0 1rem 0;
    font-size: 1rem;
    color: var(--text-color);
}

.transform-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.transform-btn {
    padding: 0.75rem;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.875rem;
    transition: var(--transition);
}

.transform-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Действия */
.result-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.result-actions .btn {
    width: 100%;
    padding: 0.75rem;
}

/* Массовый режим */
.batch-controls {
    display: flex;
    gap: 1rem;
    margin: 1rem 0;
    flex-wrap: wrap;
}

.batch-controls .service-select {
    flex: 1;
    min-width: 200px;
}

.batch-results {
    margin-top: 1.5rem;
}

.batch-results-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.batch-results-table thead {
    background: var(--bg-secondary);
}

.batch-results-table th,
.batch-results-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.batch-results-table th {
    font-weight: 600;
    color: var(--text-color);
}

.batch-results-table td {
    color: var(--text-color);
}

.batch-results-table tr:last-child td {
    border-bottom: none;
}

.batch-results-table .error-cell {
    color: var(--error-color);
    font-size: 0.875rem;
}

/* Адаптивность */
@media (max-width: 1200px) {
    .converter-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .converter-center-panel {
        max-width: 100%;
    }
    
    .preview-container {
        flex-direction: row;
        align-items: center;
    }
    
    .preview-arrow {
        transform: rotate(90deg);
    }
}

@media (max-width: 768px) {
    .format-buttons-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .format-btn {
        min-height: 70px;
        padding: 0.75rem 0.5rem;
    }
    
    .format-icon {
        font-size: 1.25rem;
    }
    
    .format-label {
        font-size: 0.7rem;
    }
    
    .transform-buttons {
        grid-template-columns: 1fr;
    }
    
    .preview-container {
        flex-direction: column;
    }
    
    .preview-arrow {
        transform: none;
    }
    
    .batch-controls {
        flex-direction: column;
    }
    
    .batch-controls .service-select,
    .batch-controls .btn {
        width: 100%;
    }
    
    .batch-results-table {
        font-size: 0.875rem;
    }
    
    .batch-results-table th,
    .batch-results-table td {
        padding: 0.5rem;
    }
}