:root{--primary-color:#2196F3;--accent-color:#00BCD4;--success-color:#4CAF50;--background-light:#f5f7fa;--background-white:#ffffff;--text-dark:#333333;--text-darker:#1a1a1a;--text-light:#f5f7fa;--text-result:#00796B;--text-muted:#757575;--border-color:#e0e0e0;--shadow-color:rgba(0, 0, 0, 0.1);--transition-speed:0.3s}.water-calculator-container{max-width:800px;margin:0 auto;font-family:'Roboto','Segoe UI',sans-serif;padding:20px;box-sizing:border-box;color:var(--text-dark);background-color:var(--background-light);border-radius:12px;box-shadow:0 4px 12px var(--shadow-color)}.water-calculator-title{text-align:center;margin-bottom:25px;color:var(--text-darker);font-size:28px;font-weight:500;position:relative;padding-bottom:15px}.water-calculator-title:after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:80px;height:3px;background:linear-gradient(to right,var(--primary-color),var(--accent-color));border-radius:3px}.water-calculator-form{background-color:var(--background-white);border-radius:10px;padding:25px;box-shadow:0 2px 10px var(--shadow-color);margin-bottom:25px;transition:all var(--transition-speed)}.water-calculator-tabs{display:flex;flex-wrap:wrap;margin-bottom:25px;border-bottom:1px solid var(--border-color);position:relative}.water-calculator-tab-link{background-color:#fff0;border:none;outline:none;cursor:pointer;padding:12px 20px;margin-right:5px;margin-bottom:-1px;border-radius:8px 8px 0 0;transition:all var(--transition-speed);font-weight:500;color:var(--text-dark);border:1px solid #fff0;position:relative;overflow:hidden}.water-calculator-tab-link:before{content:'';position:absolute;bottom:0;left:0;width:100%;height:3px;background:linear-gradient(to right,var(--primary-color),var(--accent-color));transform:scaleX(0);transition:transform var(--transition-speed)}.water-calculator-tab-link:hover{background-color:rgb(33 150 243 / .05);transform:translateY(-3px)}.water-calculator-tab-link:hover:before{transform:scaleX(.5)}.water-calculator-tab-link.active{background-color:var(--background-white);border:1px solid var(--border-color);border-bottom:1px solid var(--background-white);color:var(--primary-color)}.water-calculator-tab-link.active:before{transform:scaleX(1)}.water-calculator-tab-link i{margin-right:8px;font-size:16px}.water-calculator-tab-content{position:relative}.water-calculator-tab-pane{display:none;padding:20px;border:1px solid var(--border-color);border-radius:0 0 8px 8px;background-color:var(--background-white);animation:fadeIn 0.5s}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.water-calculator-tab-pane.active{display:block}.water-calculator-tab-pane h3{margin-top:0;margin-bottom:25px;color:var(--primary-color);font-size:20px;font-weight:500;border-bottom:1px solid var(--border-color);padding-bottom:12px}.water-calculator-tab-pane h3 i{margin-right:10px;color:var(--accent-color)}.water-calculator-field{margin-bottom:20px;display:flex;flex-wrap:wrap;align-items:center}.water-calculator-field label{flex:1 0 250px;margin-bottom:8px;font-weight:500;color:var(--text-dark);transition:all var(--transition-speed)}.input-with-icon{flex:1 0 200px;position:relative;display:flex;align-items:center}.water-calculator-input{flex:1;padding:12px 15px;border:1px solid var(--border-color);border-radius:6px;font-size:16px;transition:all var(--transition-speed);background-color:var(--background-white);color:var(--text-dark)}.water-calculator-input:focus{border-color:var(--accent-color);outline:none;box-shadow:0 0 0 3px rgb(0 188 212 / .2);transform:scale(1.02)}.water-calculator-unit{margin-left:10px;color:var(--text-muted);font-weight:400;min-width:40px}.water-calculator-button{text-align:center;margin-top:30px}.water-calculator-button button{background-image:linear-gradient(to right,var(--primary-color),#03A9F4);color:var(--text-light);border:none;padding:14px 35px;text-align:center;text-decoration:none;display:inline-block;font-size:16px;font-weight:500;margin:4px 2px;cursor:pointer;border-radius:30px;transition:all var(--transition-speed);box-shadow:0 4px 6px rgb(33 150 243 / .3);position:relative;overflow:hidden}.water-calculator-button button:before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgb(255 255 255 / .2),transparent);transition:all 0.6s}.water-calculator-button button:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 7px 10px rgb(33 150 243 / .4)}.water-calculator-button button:hover:before{left:100%}.water-calculator-button button:active{transform:translateY(1px) scale(.98)}.water-calculator-button button i{margin-right:8px}.water-calculator-results{background-image:linear-gradient(to right,#e8f5e9,#f1f8e9);border-radius:12px;padding:25px;box-shadow:0 4px 15px var(--shadow-color);text-align:center;position:relative;overflow:hidden}.water-calculator-results:before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgb(255 255 255 / .3) 0%,transparent 70%);animation:waterWave 15s infinite linear;opacity:.5;z-index:0}@keyframes waterWave{0%{transform:rotate(0deg)}100%{transform:rotate(360deg)}}.water-calculator-result-container{position:relative;z-index:1}.water-calculator-results h3{margin-top:0;margin-bottom:20px;color:var(--text-dark);font-size:22px;font-weight:500}.water-calculator-result-item{margin-bottom:15px;display:flex;align-items:center;justify-content:center}.water-drop-icon{margin-right:15px;font-size:36px;color:var(--accent-color);animation:dropPulse 2s infinite}@keyframes dropPulse{0%{transform:scale(1)}50%{transform:scale(1.1)}100%{transform:scale(1)}}.result-value{font-size:36px;font-weight:700;color:var(--text-result);margin-right:10px;transition:all 0.5s}.result-unit{font-size:18px;color:var(--text-muted)}.water-calculator-note{font-size:14px;color:var(--text-muted);font-style:italic;margin-top:20px;position:relative;z-index:1}@media (max-width:768px){.water-calculator-container{padding:15px}.water-calculator-form,.water-calculator-results{padding:20px}.water-calculator-tabs{flex-direction:row;overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch;padding-bottom:5px}.water-calculator-tab-link{padding:10px 15px;font-size:14px}.water-calculator-tab-link i{margin-right:5px}.water-calculator-field{flex-direction:column;align-items:flex-start}.water-calculator-field label{margin-bottom:10px;width:100%}.input-with-icon{width:100%}.water-calculator-button button{width:100%}.result-value{font-size:30px}}