:root{--emerald: #10b981;--emerald-dark: #059669;--emerald-light: #34d399;--danger: #ef4444;--warning: #f59e0b;--info: #3b82f6;--dark-bg: #0a0a0f;--dark-card: #1a1a1f;--text-light: #e8e8f0;--text-muted: #9ca3b8;--nav-height: 70px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Inter,sans-serif;background:var(--dark-bg);color:var(--text-light);line-height:1.6;overflow-x:hidden}body:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(circle at 20% 30%,rgba(16,185,129,.08) 0%,transparent 50%),radial-gradient(circle at 80% 70%,rgba(16,185,129,.06) 0%,transparent 50%);animation:breathe 20s ease-in-out infinite;pointer-events:none;z-index:0}@keyframes breathe{0%,to{opacity:.3}50%{opacity:.6}}.main-nav{position:fixed;top:0;left:0;right:0;height:var(--nav-height);background:#0f172af2;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid rgba(16,185,129,.2);z-index:100}.nav-container{max-width:1400px;margin:0 auto;height:100%;display:flex;align-items:center;justify-content:space-between;padding:0 2rem}.nav-logo{display:flex;align-items:center;gap:.75rem;text-decoration:none;color:var(--text-light);font-weight:700;font-size:1.25rem}.nav-icon{font-size:2rem}.nav-badge{background:var(--emerald);color:#fff;padding:.25rem .75rem;border-radius:12px;font-size:.75rem;font-weight:700}.nav-links{display:flex;gap:2rem;align-items:center}.nav-links a{color:var(--text-muted);text-decoration:none;font-weight:500;transition:color .3s}.nav-links a:hover{color:var(--emerald)}.emergency-btn{background:var(--danger);color:#fff!important;padding:.75rem 1.5rem;border-radius:25px;font-weight:700;animation:pulse 2s ease-in-out infinite;display:inline-flex;align-items:center;gap:.5rem}@keyframes pulse{0%,to{transform:scale(1);box-shadow:0 0 #ef4444b3}50%{transform:scale(1.05);box-shadow:0 0 0 10px #ef444400}}.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:.5rem}.hamburger span{width:25px;height:3px;background:var(--emerald);transition:all .3s;border-radius:3px}.mobile-menu{position:fixed;top:var(--nav-height);left:0;right:0;bottom:0;background:#0a0a0ffa;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);display:none;z-index:99}.mobile-menu.active{display:block}.mobile-menu-content{padding:2rem;display:flex;flex-direction:column;gap:1.5rem}.mobile-menu-link{color:var(--text-light);text-decoration:none;font-size:1.5rem;font-weight:600;padding:1rem;border-radius:12px;background:#ffffff08;border:1px solid rgba(255,255,255,.1);text-align:center}.mobile-menu-link.emergency{background:var(--danger);color:#fff}.disclaimer-banner{position:fixed;top:var(--nav-height);left:0;right:0;background:#ef444426;border-bottom:2px solid var(--danger);padding:.75rem 2rem;text-align:center;z-index:99;font-size:.9rem}.disclaimer-banner a{color:var(--emerald);text-decoration:underline}.calculator-page{position:relative;min-height:calc(100vh - var(--nav-height) - 50px);padding:calc(var(--nav-height) + 60px) 2rem 4rem;z-index:1}.calculator-container{max-width:800px;margin:0 auto}.calculator-header{text-align:center;margin-bottom:3rem}.calculator-header h1{font-size:clamp(2rem,4vw,3rem);color:var(--emerald);margin-bottom:1rem}.calculator-header .subtitle{font-size:1.25rem;color:var(--text-muted);margin-bottom:1.5rem}.header-badges{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}.badge{background:#10b9811a;border:1px solid rgba(16,185,129,.3);padding:.5rem 1rem;border-radius:20px;color:var(--emerald-light);font-size:.9rem;font-weight:600}.calculator-card{background:#ffffff08;border:1px solid rgba(255,255,255,.1);border-radius:20px;padding:2.5rem;margin-bottom:2rem}.form-group{margin-bottom:2rem}.form-group label{display:block;color:var(--emerald);font-weight:600;margin-bottom:.75rem;font-size:1.1rem}.help-text{display:block;color:var(--text-muted);font-size:.9rem;margin-top:.5rem}.species-selector{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.species-btn{background:#ffffff0d;border:2px solid rgba(255,255,255,.1);border-radius:12px;padding:1.5rem;cursor:pointer;transition:all .3s;display:flex;flex-direction:column;align-items:center;gap:.5rem;color:var(--text-light);font-size:1.1rem;font-weight:600}.species-btn .icon{font-size:3rem}.species-btn:hover{border-color:var(--emerald);background:#10b9811a}.species-btn.active{border-color:var(--emerald);background:#10b98126;color:var(--emerald)}.input-group{display:flex;gap:.5rem}input[type=number],select{background:#ffffff0d;border:2px solid rgba(255,255,255,.1);border-radius:12px;padding:1rem;color:var(--text-light);font-size:1rem;transition:all .3s;width:100%}input[type=number]:focus,select:focus{outline:none;border-color:var(--emerald);background:#10b9810d}.unit-selector{flex-shrink:0;width:100px}.calculate-btn{width:100%;background:linear-gradient(135deg,var(--emerald),var(--emerald-dark));color:#fff;border:none;border-radius:12px;padding:1.25rem;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .3s;display:flex;align-items:center;justify-content:center;gap:.75rem;box-shadow:0 8px 25px #10b9814d}.calculate-btn:hover{transform:translateY(-2px);box-shadow:0 12px 35px #10b98166}.results-section{margin-bottom:3rem}.results-card{background:#ffffff08;border:2px solid rgba(255,255,255,.1);border-radius:20px;padding:2.5rem}.results-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.results-header h2{color:var(--emerald);font-size:1.75rem}.clear-btn{background:#ffffff1a;border:1px solid rgba(255,255,255,.2);color:var(--text-light);padding:.75rem 1.5rem;border-radius:8px;cursor:pointer;font-weight:600;transition:all .3s}.clear-btn:hover{background:#ffffff26}.severity-indicator{text-align:center;padding:2rem;border-radius:15px;margin-bottom:2rem}.severity-badge{font-size:2rem;font-weight:900;margin-bottom:1rem;display:flex;align-items:center;justify-content:center;gap:1rem}.dose-info{font-size:1.25rem;color:var(--text-muted)}.severity-minimal{background:#3b82f61a;border:2px solid var(--info)}.severity-minimal .severity-badge{color:var(--info)}.severity-mild{background:#10b9811a;border:2px solid var(--emerald)}.severity-mild .severity-badge{color:var(--emerald)}.severity-moderate{background:#f59e0b1a;border:2px solid var(--warning)}.severity-moderate .severity-badge{color:var(--warning)}.severity-severe,.severity-critical{background:#ef44441a;border:2px solid var(--danger)}.severity-severe .severity-badge,.severity-critical .severity-badge{color:var(--danger)}.result-section{margin-bottom:2rem}.result-section h3{color:var(--emerald-light);font-size:1.25rem;margin-bottom:.75rem}.result-section p{color:var(--text-light);line-height:1.8}.result-section ul{list-style:none;padding-left:0}.result-section li{color:var(--text-light);padding:.5rem 0 .5rem 1.5rem;position:relative}.result-section li:before{content:"•";position:absolute;left:0;color:var(--emerald);font-weight:900}.warning-text{color:var(--danger)!important;font-weight:600}.emergency-section{margin-bottom:3rem;text-align:center}.emergency-section h2{color:var(--danger);font-size:2rem;margin-bottom:2rem}.emergency-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-bottom:1.5rem}.emergency-card{background:#ef44441a;border:2px solid var(--danger);border-radius:15px;padding:2rem;text-decoration:none;display:flex;align-items:center;gap:1.5rem;transition:all .3s}.emergency-card:hover{transform:translateY(-3px);box-shadow:0 10px 30px #ef44444d}.emergency-icon{font-size:3rem}.emergency-info{text-align:left}.emergency-info h3{color:var(--danger);font-size:1.25rem;margin-bottom:.5rem}.emergency-info .phone{color:var(--text-light);font-size:1.5rem;font-weight:700;margin-bottom:.25rem}.emergency-info .note{color:var(--text-muted);font-size:.9rem}.emergency-note{color:var(--text-muted);font-size:1.1rem}.upgrade-prompt{background:linear-gradient(135deg,#10b9811a,#10b9810d);border:2px solid var(--emerald);border-radius:20px;padding:2.5rem;text-align:center;margin-bottom:3rem}.upgrade-prompt h3{color:var(--emerald);font-size:1.75rem;margin-bottom:1rem}.upgrade-prompt p{color:var(--text-light);font-size:1.1rem;margin-bottom:1.5rem}.upgrade-btn{background:linear-gradient(135deg,var(--emerald),var(--emerald-dark));color:#fff;padding:1rem 2.5rem;border-radius:12px;text-decoration:none;font-weight:700;font-size:1.1rem;display:inline-block;transition:all .3s}.upgrade-btn:hover{transform:translateY(-2px);box-shadow:0 8px 25px #10b98166}.calculator-footer{text-align:center;padding:2rem;border-top:1px solid rgba(255,255,255,.1);color:var(--text-muted)}.footer-links{display:flex;justify-content:center;gap:2rem;margin:1rem 0}.footer-links a{color:var(--text-muted);text-decoration:none}.footer-links a:hover{color:var(--emerald)}.disclaimer-text{font-size:.9rem;font-style:italic}@media(max-width:768px){.desktop-nav{display:none}.hamburger{display:flex}.calculator-page{padding:calc(var(--nav-height) + 100px) 1rem 2rem}.calculator-card{padding:1.5rem}.species-selector,.emergency-cards{grid-template-columns:1fr}.upgrade-prompt{padding:1.5rem}}