*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f172a;--bg2: #1e293b;--bg3: #334155;--accent: #22c55e;--accent2: #16a34a;--text: #f1f5f9;--text2: #94a3b8;--danger: #ef4444;--warning: #f59e0b;--radius: 16px;--nav-h: 68px}html,body,#root{height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:16px;-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:var(--bg3);border-radius:4px}h1{font-size:1.6rem;font-weight:700}h2{font-size:1.25rem;font-weight:600}h3{font-size:1rem;font-weight:600}.page{min-height:100vh;padding:0 0 calc(var(--nav-h) + 12px);overflow-y:auto}.page-content{max-width:480px;margin:0 auto;padding:16px 16px 0}.page-header{position:sticky;top:0;z-index:10;background:var(--bg);padding:16px 16px 12px;border-bottom:1px solid var(--bg3);max-width:480px;margin:0 auto}.card{background:var(--bg2);border-radius:var(--radius);padding:16px;margin-bottom:12px}.card-sm{background:var(--bg2);border-radius:12px;padding:12px;margin-bottom:8px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:12px;font-size:1rem;font-weight:600;cursor:pointer;padding:14px 24px;transition:opacity .15s,transform .1s;width:100%}.btn:active{transform:scale(.97);opacity:.85}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff}.btn-secondary{background:var(--bg3);color:var(--text)}.btn-danger{background:var(--danger);color:#fff}.btn-ghost{background:transparent;color:var(--accent);border:2px solid var(--accent)}.btn-sm{padding:8px 16px;font-size:.875rem;border-radius:8px;width:auto}.input{width:100%;background:var(--bg3);border:2px solid transparent;border-radius:12px;color:var(--text);font-size:1rem;padding:14px 16px;outline:none;transition:border-color .15s}.input:focus{border-color:var(--accent)}.input::placeholder{color:var(--text2)}.input-group{margin-bottom:16px}.input-group label{display:block;color:var(--text2);font-size:.875rem;margin-bottom:6px}.bottom-nav{position:fixed;bottom:0;left:0;right:0;height:var(--nav-h);background:var(--bg2);border-top:1px solid var(--bg3);display:flex;align-items:center;justify-content:space-around;z-index:100;padding-bottom:env(safe-area-inset-bottom,0)}.nav-item{display:flex;flex-direction:column;align-items:center;gap:3px;flex:1;padding:8px 4px;cursor:pointer;color:var(--text2);text-decoration:none;font-size:.7rem;font-weight:500;transition:color .15s;border:none;background:none}.nav-item svg{width:24px;height:24px}.nav-item.active{color:var(--accent)}.nav-cam{background:var(--accent);color:#fff!important;border-radius:50%;width:52px;height:52px;padding:0;margin-bottom:12px;box-shadow:0 4px 20px #22c55e66}.nav-cam svg{width:26px;height:26px}.nutrient-bar{margin-bottom:10px}.nutrient-bar-header{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:4px;font-size:.875rem}.nutrient-bar-track{height:8px;background:var(--bg3);border-radius:999px;overflow:hidden}.nutrient-bar-fill{height:100%;border-radius:999px;transition:width .5s ease}@keyframes spin{to{transform:rotate(360deg)}}.spinner{width:40px;height:40px;border:3px solid var(--bg3);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite;margin:40px auto}.alert{padding:12px 16px;border-radius:12px;font-size:.9rem;margin-bottom:12px}.alert-error{background:#ef444426;color:#fca5a5;border:1px solid rgba(239,68,68,.3)}.alert-success{background:#22c55e26;color:#86efac;border:1px solid rgba(34,197,94,.3)}.alert-info{background:#6366f126;color:#a5b4fc;border:1px solid rgba(99,102,241,.3)}.tag{display:inline-block;padding:4px 10px;border-radius:999px;font-size:.75rem;font-weight:600}.tag-green{background:#22c55e33;color:var(--accent)}.tag-yellow{background:#f59e0b33;color:var(--warning)}.tag-red{background:#ef444433;color:var(--danger)}.text-muted{color:var(--text2)}.text-accent{color:var(--accent)}.text-sm{font-size:.875rem}.text-xs{font-size:.75rem}.mt-1{margin-top:4px}.mt-2{margin-top:8px}.mt-3{margin-top:12px}.mt-4{margin-top:16px}.mb-4{margin-bottom:16px}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:8px}.gap-3{gap:12px}.w-full{width:100%}.text-center{text-align:center}.auth-page{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px;background:var(--bg)}.auth-logo{font-size:3rem;margin-bottom:8px}.auth-title{font-size:1.5rem;font-weight:700;margin-bottom:4px}.auth-subtitle{color:var(--text2);font-size:.9rem;margin-bottom:32px;text-align:center}.auth-form{width:100%;max-width:400px}.auth-link{color:var(--accent);cursor:pointer;text-decoration:none}