.calculator-container{max-width:1200px;margin:0 auto;padding:2rem;font-family:Arial,sans-serif;background-color:#f5f7fa;min-height:100vh}.calculator-title{text-align:center;color:#2c3e50;margin-bottom:2rem;font-size:2.5rem;font-weight:700}.input-section{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;margin-bottom:2rem}.input-group{display:flex;flex-direction:column}.input-group label{font-size:1rem;color:#34495e;margin-bottom:.5rem;font-weight:600}.input-group input{padding:.75rem;border:1px solid #dfe6e9;border-radius:8px;font-size:1rem;transition:border-color .3s ease}.input-group input:focus{outline:none;border-color:#3498db;box-shadow:0 0 5px rgba(52,152,219,.3)}.error-message{color:#e74c3c;text-align:center;margin-bottom:1.5rem;font-weight:500}.results-section{background-color:#fff;padding:2rem;border-radius:12px;box-shadow:0 4px 12px rgba(0,0,0,.1)}.results-section h2{color:#2c3e50;margin-bottom:1.5rem;font-size:1.8rem}.results-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem}.result-card{background-color:#3498db;color:#fff;padding:1.5rem;border-radius:10px;text-align:center;transition:transform .3s ease}.result-card:hover{transform:translateY(-5px)}.result-card h3{font-size:1.2rem;margin-bottom:1rem}.result-card p{font-size:1rem;margin:.5rem 0}@media(max-width:768px){.calculator-container{padding:1rem}.calculator-title{font-size:2rem}.input-section,.results-grid{grid-template-columns:1fr}.results-section{padding:1.5rem}}@media(max-width:480px){.calculator-title{font-size:1.8rem}.input-group input{font-size:.9rem}.result-card{padding:1rem}}