.hydration-calculator{--primary: #0ea5e9;--primary-light: #e0f2fe;--text-main: #1e293b;--text-dim: #64748b;--border: #f1f5f9;color:var(--text-main);max-width:900px;margin:1rem auto;background:#fff;border-radius:2rem;padding:2.5rem;box-shadow:0 25px 50px -12px #0ea5e914;border:1px solid var(--border);box-sizing:border-box}.hydration-layout{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:stretch}@media(max-width:768px){.hydration-calculator{padding:1.5rem;margin:.5rem auto;width:calc(100% - 1rem);border-radius:1.5rem}.hydration-layout{display:flex;flex-direction:column;gap:1.5rem}}.hydration-controls{display:flex;flex-direction:column;gap:1.5rem}.control-card{background:#fff;border-radius:1rem}.control-card h4{margin:0 0 1rem;font-size:.8rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim);display:flex;align-items:center;gap:.5rem;font-weight:700}.header-with-action{display:flex;justify-content:space-between;align-items:center;margin-bottom:0}.weather-btn-compact{background:var(--primary-light);color:var(--primary);border:none;width:32px;height:32px;border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}.weather-btn-compact:hover{background:var(--primary);color:#fff}.input-row-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.mini-input{display:flex;flex-direction:column;gap:.4rem}.mini-input span{font-size:.7rem;font-weight:600;color:var(--text-dim)}input[type=number]{background:#f8fafc;border:1px solid #e2e8f0;padding:.75rem;border-radius:.75rem;font-size:1.1rem;font-weight:700;width:100%;color:var(--text-main);box-sizing:border-box;transition:all .2s;outline:none}input[type=number]:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px var(--primary-glow)}.intensity-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.5rem;margin-bottom:1rem}.intensity-btn{background:#f8fafc;border:1px solid #e2e8f0;padding:.75rem .25rem;border-radius:.75rem;font-size:.75rem;font-weight:700;color:var(--text-dim);cursor:pointer;transition:all .2s}.intensity-btn:hover{border-color:var(--primary);color:var(--primary)}.intensity-btn.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 4px 12px #0ea5e933}.visual-area{background:linear-gradient(to bottom,#f0f9ff,#fff);border:2px solid #f0f9ff;border-radius:2rem;padding:2.5rem;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2rem;height:100%;box-sizing:border-box;position:relative;overflow:hidden}@media(max-width:768px){.visual-area{padding:2rem;order:10;height:auto}}.bottle-container{width:120px;height:300px;background:#fff;border:8px solid #ffffff;border-radius:30px 30px 60px 60px;overflow:hidden;position:relative;box-shadow:0 15px 35px #0ea5e914,inset 0 0 20px #00000005}@media(max-width:768px){.bottle-container{width:100px;height:100px;border-radius:20px;border-width:6px}}.bottle-fill{position:absolute;bottom:0;width:100%;background:linear-gradient(to top,#0ea5e9,#38bdf8);transition:height .8s cubic-bezier(.34,1.56,.64,1)}.wave{position:absolute;width:300%;height:300%;background:#ffffff4d;top:-285%;left:-100%;border-radius:42%;animation:waveAnim 10s linear infinite;pointer-events:none}.wave:before{content:"";position:absolute;width:100%;height:100%;background:#fff3;border-radius:40%;animation:waveAnim 14s linear infinite reverse}@keyframes waveAnim{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.total-display{text-align:center}.total-value{font-size:4rem;font-weight:900;line-height:1;color:var(--primary);margin-bottom:.25rem;display:block}.total-unit{font-size:.75rem;font-weight:800;text-transform:uppercase;color:var(--text-dim);letter-spacing:.1em;display:block}@media(max-width:768px){.total-value{font-size:3rem}}.results-footer{grid-column:1 / -1;display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-top:2rem}@media(max-width:768px){.results-footer{grid-template-columns:1fr;gap:1rem}}.result-stat{background:#f8fafc;border:1px solid #f1f5f9;padding:1.25rem;border-radius:1.25rem;display:flex;flex-direction:column;justify-content:center}.stat-label{font-size:.65rem;font-weight:800;color:var(--text-dim);text-transform:uppercase;margin-bottom:.5rem;letter-spacing:.05em}.stat-value{font-size:1.1rem;font-weight:800;color:var(--text-main)}.stat-help{font-size:.7rem;color:var(--text-dim);margin-top:.5rem}.urine-track{display:flex;height:12px;border-radius:6px;overflow:hidden;margin-top:.5rem;border:2px solid #ffffff}.urine-color{flex:1}.color-1{background:#fef9c3}.color-2{background:#fef08a}.color-3{background:#fde047}.color-4{background:#facc15}.color-5{background:#eab308}.color-6{background:#ca8a04}.color-7{background:#a16207}.urine-indicator{display:flex;justify-content:space-between;margin-top:.4rem;font-size:1.1rem}.alert-box{grid-column:1 / -1;background:#fff1f2;color:#e11d48;padding:1rem;border-radius:1rem;font-size:.85rem;font-weight:600;display:none;align-items:center;gap:.75rem;border:1px solid #ffe4e6}.alert-box.active{display:flex}.loading-spinner{width:16px;height:16px;border:2.5px solid rgba(14,165,233,.2);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;display:none}@keyframes spin{to{transform:rotate(360deg)}}[data-loading=true] .loading-spinner{display:block}[data-loading=true] .btn-icon{display:none}