:root{--primary-color: #2c3e50;--accent-color: #e67e22;--background-bg: #f8f9fa;--card-bg: #ffffff;--text-color: #333333;--text-light: #666666;--border-color: #e0e0e0;--tooltip-bg: #2c3e50;--tooltip-text: #ffffff}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,sans-serif;background-color:var(--background-bg);color:var(--text-color);line-height:1.5;padding:20px;-webkit-text-size-adjust:100%}.app-container{max-width:1100px;margin:0 auto;padding:0}.calculator-card{background:var(--card-bg);border-radius:12px;box-shadow:0 4px 20px #0000000d;padding:40px;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}.app-title{font-size:1.8rem;color:var(--primary-color);margin-bottom:30px;font-weight:700;line-height:1.2}.input-section{width:100%}.form-group{margin-bottom:24px}.form-group:last-child{margin-bottom:0}.form-group label{display:flex;align-items:center;font-weight:600;margin-bottom:8px;font-size:.95rem;color:var(--primary-color);flex-wrap:wrap}.info-icon-wrapper{position:relative;display:inline-flex;justify-content:center;align-items:center;margin-left:8px;cursor:pointer;outline:none}.info-icon{width:18px;height:18px;background-color:var(--border-color);color:var(--text-light);border-radius:50%;font-size:12px;font-weight:700;font-family:monospace;display:flex;align-items:center;justify-content:center;transition:background-color .2s,color .2s}.info-icon-wrapper:hover .info-icon,.info-icon-wrapper:focus .info-icon{background-color:var(--accent-color);color:#fff}.tooltip-text{visibility:hidden;width:220px;background-color:var(--tooltip-bg);color:var(--tooltip-text);text-align:left;border-radius:6px;padding:10px;font-size:.8rem;font-weight:400;line-height:1.4;position:absolute;z-index:100;left:50%;transform:translate(-50%);opacity:0;transition:opacity .3s;box-shadow:0 2px 10px #0003;bottom:135%;pointer-events:none}.tooltip-text:after{content:"";position:absolute;top:100%;left:50%;margin-left:-5px;border-width:5px;border-style:solid;border-color:var(--tooltip-bg) transparent transparent transparent}.info-icon-wrapper:hover .tooltip-text,.info-icon-wrapper:focus .tooltip-text{visibility:visible;opacity:1}.input-wrapper{display:flex;align-items:center;border:1px solid var(--border-color);border-radius:8px;background-color:#fff;transition:border-color .2s;overflow:hidden}.input-wrapper:focus-within{border-color:var(--accent-color);box-shadow:0 0 0 3px #e67e221a}.input-wrapper input{flex:1;min-width:0;padding:14px 0 14px 15px;font-size:16px;border:none;background:transparent;color:var(--text-color);outline:none}.input-wrapper input::-webkit-outer-spin-button,.input-wrapper input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.input-wrapper input[type=number]{-moz-appearance:textfield}.suffix{padding:0 15px 0 8px;color:var(--text-light);font-size:.9rem;background-color:transparent;pointer-events:none;-webkit-user-select:none;user-select:none;white-space:nowrap}.form-select{width:100%;padding:14px 15px;border:1px solid var(--border-color);border-radius:8px;background-color:#fff;color:var(--text-color);font-size:16px;outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");background-repeat:no-repeat;background-position:right 15px center;background-size:16px;transition:border-color .2s}.form-select:focus{border-color:var(--accent-color);box-shadow:0 0 0 3px #e67e221a}.unit-selection{display:flex;gap:10px;margin-bottom:5px;flex-wrap:wrap}.radio-pill{flex:1;display:flex;align-items:center;justify-content:center;padding:12px;border:1px solid var(--border-color);border-radius:8px;cursor:pointer;font-size:.9rem;transition:all .2s ease;background:#fff;color:var(--text-light);white-space:nowrap;min-width:140px}.radio-pill input{display:none}.radio-pill.active{background-color:var(--accent-color);border-color:var(--accent-color);color:#fff;font-weight:600}.radio-group{display:flex;gap:25px;flex-wrap:wrap}.radio-label{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:.95rem;color:var(--text-color)}.radio-label input[type=radio]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:20px;height:20px;border:2px solid var(--border-color);border-radius:50%;outline:none;transition:all .2s;position:relative;flex-shrink:0}.radio-label input[type=radio]:checked{border-color:var(--accent-color)}.radio-label input[type=radio]:checked:after{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:10px;height:10px;background-color:var(--accent-color);border-radius:50%}.calculate-btn{width:100%;padding:16px;background-color:var(--accent-color);color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;margin-top:10px;transition:filter .2s;text-transform:uppercase;letter-spacing:1px;-webkit-tap-highlight-color:transparent}.calculate-btn:hover:not(:disabled){filter:brightness(110%)}.calculate-btn:active:not(:disabled){transform:scale(.98)}.calculate-btn:disabled{background-color:#ccc;cursor:not-allowed}.error-message{color:#e74c3c;margin-top:15px;font-size:.9rem;text-align:center}.output-section{display:flex;flex-direction:column;justify-content:flex-start;height:100%;padding-top:10px}.result-box{background:var(--primary-color);color:#fff;padding:40px 30px;border-radius:12px;text-align:center;margin-bottom:30px;box-shadow:0 10px 30px #2c3e5033}.result-label{font-size:.9rem;text-transform:uppercase;letter-spacing:2px;opacity:.7;margin-bottom:10px}.result-value{font-size:3.5rem;font-weight:700;color:#fff;line-height:1.2;word-break:break-word}.result-unit{font-size:1.5rem;opacity:.8;margin-left:5px;font-weight:500;white-space:nowrap}.disclaimer-text{font-size:.85rem;color:var(--text-light);line-height:1.6;background-color:#f8f9fa;padding:20px;border-radius:8px;border-left:4px solid var(--border-color)}@media(max-width:900px){.calculator-card{grid-template-columns:1fr;gap:40px}.output-section{border-top:1px solid var(--border-color);padding-top:40px}}@media(max-width:600px){body{padding:10px}.calculator-card{padding:20px;gap:30px}.app-title{font-size:1.5rem;margin-bottom:20px;text-align:center}.result-box{padding:30px 15px}.result-value{font-size:2.5rem}.result-unit{font-size:1.2rem}.disclaimer-text{padding:15px;font-size:.8rem}.output-section{padding-top:30px}.tooltip-text{width:220px;left:-10px;right:auto;transform:none;white-space:normal}.tooltip-text:after{left:19px;right:auto;margin-left:0}}