@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap";
:root{--bg-primary:#0f0a0d;--bg-secondary:#1a1015;--bg-card:#1e0e1699;--bg-card-hover:#28121cb3;--border-glass:#f43f5e1f;--border-glass-hover:#f43f5e40;--text-primary:#fef2f2;--text-secondary:#d4a0b0;--text-muted:#9b6a7a;--accent-primary:#f43f5e;--accent-secondary:#fb7185;--accent-gradient:linear-gradient(135deg, #e11d48 0%, #f43f5e 50%, #fb7185 100%);--accent-glow:#f43f5e4d;--success:#10b981;--error:#ef4444;--radius-sm:8px;--radius-md:12px;--radius-lg:20px;--radius-xl:28px;--shadow-glass:0 8px 32px #0000004d, inset 0 1px 0 #ffffff0d;--shadow-glow:0 0 40px #f43f5e26;--transition:all .3s cubic-bezier(.4,0,.2,1)}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.6;overflow-x:hidden}body:before{content:"";pointer-events:none;z-index:0;background:radial-gradient(80% 60% at 50% -20%,#f43f5e14 0%,#0000 60%),radial-gradient(60% 40% at 80% 80%,#fb71850d 0%,#0000 50%),radial-gradient(40% 30% at 20% 70%,#e11d480d 0%,#0000 50%);position:fixed;inset:0}.navbar{z-index:100;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-glass);background:#0f0a0de0;justify-content:space-between;align-items:center;padding:16px 32px;display:flex;position:sticky;top:0}.navbar-brand{color:var(--text-primary);align-items:center;gap:10px;font-size:1.3rem;font-weight:800;text-decoration:none;display:flex}.navbar-brand .logo{color:var(--accent-primary);font-size:1.5rem}.navbar-links{align-items:center;gap:24px;list-style:none;display:flex}.navbar-links a{color:var(--text-secondary);transition:var(--transition);font-size:.9rem;font-weight:500;text-decoration:none}.navbar-links a:hover{color:var(--text-primary)}.btn-upgrade{background:var(--accent-gradient);color:#fff;border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);border:none;align-items:center;gap:6px;padding:8px 18px;font-size:.85rem;font-weight:700;text-decoration:none;display:flex}.btn-upgrade:hover{box-shadow:0 4px 20px var(--accent-glow);transform:translateY(-1px)}.hero{z-index:1;text-align:center;padding:70px 24px 30px;position:relative}.hero h1{letter-spacing:-.02em;margin-bottom:16px;font-size:clamp(2rem,5vw,3.2rem);font-weight:900;line-height:1.15}.hero h1 .gradient-text{background:var(--accent-gradient);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.hero p{color:var(--text-secondary);max-width:600px;margin:0 auto;font-size:1.05rem;line-height:1.7}.tool-section{z-index:1;max-width:700px;margin:0 auto;padding:32px 24px 60px;position:relative}.tool-card{background:var(--bg-card);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border-glass);border-radius:var(--radius-xl);box-shadow:var(--shadow-glass);padding:32px}.calc-group{margin:16px 0}.calc-label{text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:6px;font-size:.75rem;font-weight:600;display:block}.calc-input{border:1px solid var(--border-glass);border-radius:var(--radius-md);width:100%;color:var(--text-primary);transition:var(--transition);background:#140a0eb3;outline:none;padding:12px 16px;font-family:inherit;font-size:1.1rem}.calc-input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px #f43f5e1a}.calc-input::placeholder{color:var(--text-muted)}.calc-row{gap:12px;margin:12px 0;display:flex}.calc-row .calc-group{flex:1}.calc-result{border-radius:var(--radius-lg);text-align:center;background:#f43f5e14;border:1px solid #f43f5e33;margin:20px 0;padding:20px}.calc-result .result-label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);font-size:.75rem;font-weight:600}.calc-result .result-value{color:var(--accent-secondary);margin-top:4px;font-size:2.2rem;font-weight:900}.calc-result .result-sub{color:var(--text-secondary);margin-top:4px;font-size:.88rem}.calc-results-grid{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:16px 0;display:grid}.calc-stat{border:1px solid var(--border-glass);border-radius:var(--radius-md);text-align:center;background:#140a0e80;padding:14px}.calc-stat .stat-label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);font-size:.72rem;font-weight:600}.calc-stat .stat-value{color:var(--accent-secondary);margin-top:4px;font-size:1.3rem;font-weight:800}.btn-row{flex-wrap:wrap;gap:8px;margin:12px 0;display:flex}.btn-calc{color:var(--text-secondary);border:1px solid var(--border-glass);border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);background:0 0;padding:10px 18px;font-family:inherit;font-size:.85rem;font-weight:600}.btn-calc:hover{border-color:var(--border-glass-hover);color:var(--text-primary)}.btn-calc.active{background:var(--accent-gradient);color:#fff;border-color:#0000}.btn-calc.primary{background:var(--accent-gradient);color:#fff;border-color:#0000;font-weight:700}.btn-calc.primary:hover{box-shadow:0 4px 20px var(--accent-glow);transform:translateY(-1px)}select.calc-input{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%239b6a7a' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");background-position:right 12px center;background-repeat:no-repeat}.bmi-gauge{background:linear-gradient(90deg,#3b82f6 0%,#10b981 25%,#fbbf24 50%,#f97316 75%,#ef4444 100%);border-radius:6px;height:12px;margin:12px 0;position:relative}.bmi-marker{border:3px solid var(--accent-primary);background:#fff;border-radius:50%;width:20px;height:20px;transition:left .3s;position:absolute;top:-4px;transform:translate(-50%)}.course-row{align-items:center;gap:8px;margin:8px 0;display:flex}.course-row input,.course-row select{flex:1}.remove-btn{color:#ef4444;cursor:pointer;width:32px;height:32px;transition:var(--transition);background:#ef444426;border:1px solid #ef44444d;border-radius:50%;justify-content:center;align-items:center;font-size:1rem;display:flex}.remove-btn:hover{background:#ef44444d}.unit-results{gap:8px;margin:12px 0;display:grid}.unit-row{border:1px solid var(--border-glass);border-radius:var(--radius-sm);background:#140a0e80;justify-content:space-between;align-items:center;padding:10px 14px;display:flex}.unit-row .unit-name{color:var(--text-secondary);font-size:.88rem}.unit-row .unit-val{color:var(--accent-secondary);cursor:pointer;font-size:.95rem;font-weight:700}.tools-section{z-index:1;max-width:1100px;margin:0 auto;padding:60px 24px;position:relative}.tools-section h2{text-align:center;margin-bottom:12px;font-size:2rem;font-weight:800}.tools-section .subtitle{text-align:center;color:var(--text-secondary);margin-bottom:40px}.tools-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;display:grid}.tool-link{background:var(--bg-card);border:1px solid var(--border-glass);border-radius:var(--radius-md);color:var(--text-primary);transition:var(--transition);align-items:center;gap:14px;padding:18px 22px;text-decoration:none;display:flex}.tool-link:hover{border-color:var(--accent-primary);box-shadow:var(--shadow-glow);transform:translateY(-2px)}.tool-link .icon{font-size:1.5rem}.tool-link .info{flex-direction:column;display:flex}.tool-link .info .name{font-size:.95rem;font-weight:700}.tool-link .info .desc{color:var(--text-muted);margin-top:2px;font-size:.78rem}.features-section{z-index:1;max-width:1100px;margin:0 auto;padding:40px 24px 80px;position:relative}.features-section h2{text-align:center;margin-bottom:12px;font-size:2rem;font-weight:800}.features-section .subtitle{text-align:center;color:var(--text-secondary);margin-bottom:40px}.features-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;display:grid}.feature-card{background:var(--bg-card);border:1px solid var(--border-glass);border-radius:var(--radius-lg);transition:var(--transition);padding:28px}.feature-card:hover{border-color:var(--border-glass-hover);box-shadow:var(--shadow-glow);transform:translateY(-2px)}.feature-icon{background:var(--accent-gradient);border-radius:var(--radius-md);color:#fff;justify-content:center;align-items:center;width:48px;height:48px;margin-bottom:14px;font-size:1.2rem;font-weight:800;display:flex}.feature-card h3{margin-bottom:6px;font-size:1.05rem;font-weight:700}.feature-card p{color:var(--text-secondary);font-size:.88rem;line-height:1.6}.pricing-section{z-index:1;max-width:800px;margin:0 auto;padding:40px 24px 80px;position:relative}.pricing-section h2{text-align:center;margin-bottom:12px;font-size:2rem;font-weight:800}.pricing-section .subtitle{text-align:center;color:var(--text-secondary);margin-bottom:40px}.pricing-grid{grid-template-columns:1fr 1fr;gap:20px;display:grid}.pricing-card{background:var(--bg-card);border:1px solid var(--border-glass);border-radius:var(--radius-xl);padding:32px;position:relative}.pricing-card.featured{border-color:var(--accent-primary);box-shadow:var(--shadow-glow)}.pricing-badge{background:var(--accent-gradient);color:#fff;text-transform:uppercase;border-radius:20px;padding:4px 16px;font-size:.72rem;font-weight:700;position:absolute;top:-12px;left:50%;transform:translate(-50%)}.pricing-card h3{margin-bottom:6px;font-size:1.2rem;font-weight:700}.pricing-price{margin-bottom:4px;font-size:2.5rem;font-weight:900}.pricing-price span{color:var(--text-muted);font-size:.95rem;font-weight:400}.pricing-features{margin:20px 0;list-style:none}.pricing-features li{color:var(--text-secondary);align-items:center;gap:10px;padding:6px 0;font-size:.88rem;display:flex}.pricing-features li:before{content:"✓";color:var(--success);font-weight:700}.btn-pricing{border-radius:var(--radius-md);cursor:pointer;width:100%;transition:var(--transition);text-align:center;border:none;padding:13px;font-family:inherit;font-size:.95rem;font-weight:600;text-decoration:none;display:block}.btn-pricing.primary{background:var(--accent-gradient);color:#fff}.btn-pricing.primary:hover{box-shadow:0 8px 30px var(--accent-glow);transform:translateY(-2px)}.btn-pricing.outline{color:var(--text-primary);border:1px solid var(--border-glass);background:0 0}.footer{z-index:1;text-align:center;border-top:1px solid var(--border-glass);color:var(--text-muted);padding:40px 24px;font-size:.85rem;position:relative}.footer a{color:var(--accent-secondary);text-decoration:none}@media (max-width:768px){.navbar{padding:12px 16px}.navbar-links{display:none}.hero{padding:40px 16px 24px}.tool-card{padding:20px}.pricing-grid{grid-template-columns:1fr}.calc-row{flex-direction:column}}