/* Calculator-specific styling */
        .calculator-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        
        .tab-buttons {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-md);
        }
        
        .tab-button {
            padding: var(--spacing-sm);
            cursor: pointer;
            text-align: center;
            transition: all 0.3s;
            font-weight: bold;
            font-size: 0.9em;
            background-color: var(--background-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius-sm);
        }
        
        .tab-button.active {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        
        .tab-button:hover:not(.active) {
            background-color: var(--background-hover);
        }
        
        .tab-content {
            display: none;
        }
        
        .tab-content.active {
            display: block;
        }
        
        .dimension-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-sm);
        }
        
        .room-presets {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-xs);
            margin: var(--spacing-sm) 0;
        }
        
        .room-preset {
            background-color: var(--background-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius-sm);
            padding: var(--spacing-xs);
            cursor: pointer;
            text-align: center;
            font-size: 0.9em;
            transition: background-color 0.3s;
        }
        
        .room-preset:hover {
            background-color: var(--background-hover);
        }
        
        .visual-preview {
            background-color: white;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: var(--spacing-sm);
            margin-top: var(--spacing-sm);
            text-align: center;
        }
        
        .shape-visual {
            width: 200px;
            height: 150px;
            margin: var(--spacing-sm) auto;
            border: 2px solid var(--primary-color);
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9em;
            color: var(--primary-color);
            font-weight: bold;
        }
        
        .shape-visual.rectangle {
            background: linear-gradient(45deg, var(--background-light) 25%, transparent 25%), linear-gradient(-45deg, var(--background-light) 25%, transparent 25%);
            background-size: 20px 20px;
        }
        
        .shape-visual.circle {
            border-radius: 50%;
            background: radial-gradient(circle, var(--background-light) 0%, var(--background-secondary) 100%);
        }
        
        .shape-visual.triangle {
            background: linear-gradient(135deg, var(--background-light) 50%, transparent 50%);
            clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
        }
        
        .unit-conversion {
            background-color: white;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: var(--spacing-sm);
            margin-top: var(--spacing-sm);
        }
        
        .conversion-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
            gap: var(--spacing-sm);
            margin-top: var(--spacing-sm);
        }
        
        .conversion-item {
            background-color: var(--background-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius-sm);
            padding: var(--spacing-sm);
            text-align: center;
        }
        
        .conversion-item .unit {
            font-size: 0.8em;
            color: var(--text-secondary);
            margin-bottom: 5px;
        }
        
        .conversion-item .value {
            font-weight: bold;
            color: var(--primary-color);
            font-family: monospace;
        }
        
        .examples-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-sm);
            margin-top: var(--spacing-sm);
        }
        
        .example-item {
            background-color: white;
            padding: var(--spacing-sm);
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
        }
        
        @media (max-width: 768px) {
            .calculator-container {
                grid-template-columns: 1fr;
            }
            .dimension-grid {
                grid-template-columns: 1fr;
            }
            .room-presets {
                grid-template-columns: repeat(2, 1fr);
            }
            .conversion-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }