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1.5rem;border:none;border-radius:4px;background-color:#3498db;color:#fff;font-size:1rem;transition:background-color .3s,transform .1s}.paint-calculator-container button:hover{background-color:#2980b9}.paint-calculator-container button:active{transform:translateY(1px)}.calculator-header{text-align:center;margin-bottom:2rem}.calculator-header p{font-size:1.1rem;color:#7f8c8d;margin-top:.5rem}.calculator-options{display:flex;flex-wrap:wrap;gap:2rem;margin-bottom:2rem;padding:1.5rem;background-color:#f8f9fa;border-radius:8px}.calculator-options .paint-coverage,.calculator-options .unit-selector{flex:1;min-width:250px}.calculator-options .paint-coverage label,.calculator-options .unit-selector label{display:block;margin-bottom:.5rem;font-weight:600}.calculator-options .toggle-container{display:flex;border:1px solid #ddd;border-radius:4px;overflow:hidden}.calculator-options .toggle-container button{flex:1;padding:.75rem;background-color:#f1f1f1;color:#333;border-radius:0;border-right:1px solid #ddd}.calculator-options .toggle-container button:last-child{border-right:none}.calculator-options .toggle-container button.active{background-color:#3498db;color:#fff;font-weight:600}.calculator-options .input-with-unit{display:flex;align-items:center}.calculator-options .input-with-unit input{flex:1;border-top-right-radius:0;border-bottom-right-radius:0}.calculator-options .input-with-unit span{padding:.75rem;background-color:#e9ecef;border:1px solid #ccc;border-left:none;border-top-right-radius:4px;border-bottom-right-radius:4px;color:#495057;white-space:nowrap}.walls-container{margin-bottom:2rem}.walls-container .wall-inputs{background-color:#f8f9fa;border-radius:8px;padding:1.5rem;margin-bottom:1.5rem;box-shadow:0 2px 8px rgba(0,0,0,.05)}.walls-container .wall-inputs .wall-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.walls-container .wall-inputs .wall-header h3{margin:0}.walls-container .wall-inputs .wall-header .remove-wall{background-color:#e74c3c;padding:.25rem .5rem;font-size:.9rem;border-radius:4px}.walls-container .wall-inputs .wall-header .remove-wall:hover{background-color:#c0392b}.walls-container .wall-inputs .dimensions,.walls-container .wall-inputs .openings{display:flex;flex-wrap:wrap;gap:1rem;margin-bottom:1rem}.walls-container .wall-inputs .dimensions .input-group,.walls-container .wall-inputs .openings .input-group{flex:1;min-width:200px}.walls-container .wall-inputs .dimensions .input-group label,.walls-container .wall-inputs .openings .input-group label{display:block;margin-bottom:.5rem;font-weight:500}.walls-container .add-wall{width:100%;background-color:#2ecc71}.walls-container .add-wall:hover{background-color:#27ae60}.results-container{background-color:#f8f9fa;border-radius:8px;padding:1.5rem;margin-bottom:2rem;box-shadow:0 2px 8px rgba(0,0,0,.05)}.results-container .results-grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.results-container .results-grid .result-item{padding:1rem;background-color:#fff;border-radius:6px;box-shadow:0 1px 3px rgba(0,0,0,.1);display:flex;flex-direction:column}.results-container .results-grid .result-item.highlight{background-color:#3498db;color:#fff}.results-container .results-grid .result-item.highlight .result-label{color:hsla(0,0%,100%,.8)}.results-container .results-grid .result-item .result-label{font-size:.9rem;color:#7f8c8d;margin-bottom:.5rem}.results-container .results-grid .result-item .result-value{font-size:1.5rem;font-weight:700}.action-buttons{display:flex;justify-content:center;margin-bottom:2rem}.action-buttons .reset-button{background-color:#95a5a6;font-weight:500}.action-buttons .reset-button:hover{background-color:#7f8c8d}.calculator-tips{background-color:#fff8e1;border-left:4px solid #ffc107;padding:1.5rem;border-radius:4px}.calculator-tips h3{margin-top:0;color:#f39c12}.calculator-tips ul{margin:0;padding-left:1.5rem}.calculator-tips ul li{margin-bottom:.5rem;line-height:1.5}.calculator-tips ul li:last-child{margin-bottom:0}@media(max-width:768px){.paint-calculator-container{padding:1rem}.paint-calculator-container h1{font-size:1.8rem}.paint-calculator-container h2{font-size:1.4rem}.calculator-options,.results-container,.walls-container .wall-inputs{padding:1rem}.results-container .results-grid .result-item .result-value{font-size:1.2rem}}@media(max-width:480px){.walls-container .wall-inputs .dimensions,.walls-container .wall-inputs .openings{flex-direction:column;gap:.75rem}.input-with-unit span{font-size:.9rem}}