:root{--primary: #2E7D5E;--primary-light: #3DAF80;--primary-dark: #1B5E40;--primary-bg: #EBF7F2;--primary-bg-soft: #F4FBF8;--safe: #16A34A;--safe-bg: #ECFDF5;--safe-border: #6EE7B7;--safe-text: #065F46;--moderate: #D97706;--moderate-bg: #FFFBEB;--moderate-border: #FCD34D;--moderate-text: #92400E;--irritating: #DC2626;--irritating-bg: #FEF2F2;--irritating-border: #FCA5A5;--irritating-text: #7F1D1D;--unknown: #6B7280;--unknown-bg: #F9FAFB;--unknown-border: #D1D5DB;--unknown-text: #374151;--bg: #F5F9F7;--surface: #FFFFFF;--surface-2: #F8FAF9;--border: #E5EAE8;--border-soft: #EFF3F1;--text: #111827;--text-secondary: #4B5563;--text-muted: #9CA3AF;--text-on-primary: #FFFFFF;--shadow-xs: 0 1px 2px rgba(0,0,0,.04);--shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);--shadow: 0 4px 6px -1px rgba(0,0,0,.08), 0 2px 4px -1px rgba(0,0,0,.04);--shadow-md: 0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -2px rgba(0,0,0,.04);--shadow-lg: 0 20px 25px -5px rgba(0,0,0,.1), 0 10px 10px -5px rgba(0,0,0,.04);--radius-xs: 4px;--radius-sm: 6px;--radius: 10px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--bottom-nav-height: 72px;--top-bar-height: 60px;--content-max: 720px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);line-height:1.5;min-height:100vh;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}input,select,textarea{font-family:inherit}img{max-width:100%}.app-shell{display:flex;flex-direction:column;min-height:100vh}.top-bar{position:sticky;top:0;z-index:50;background:var(--surface);border-bottom:1px solid var(--border);height:var(--top-bar-height);display:flex;align-items:center;padding:0 16px;gap:12px;box-shadow:var(--shadow-xs)}.top-bar-logo{display:flex;align-items:center;gap:8px;font-size:1.1rem;font-weight:700;color:var(--primary)}.top-bar-logo span{font-size:1.3rem}.top-bar-title{flex:1;font-size:1rem;font-weight:600;color:var(--text)}.top-bar-actions{display:flex;align-items:center;gap:8px}.main-content{flex:1;padding-bottom:calc(var(--bottom-nav-height) + 12px)}.page-container{max-width:var(--content-max);margin:0 auto;padding:16px 16px 0}.bottom-nav{position:fixed;bottom:0;left:0;right:0;z-index:50;background:var(--surface);border-top:1px solid var(--border);height:var(--bottom-nav-height);display:flex;align-items:center;justify-content:space-around;padding:0 4px;padding-bottom:env(safe-area-inset-bottom,0);box-shadow:0 -2px 10px #0000000f}.bottom-nav-item{display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 12px;border-radius:var(--radius);border:none;background:transparent;color:var(--text-muted);font-size:.65rem;font-weight:500;transition:color .15s,background .15s;min-width:52px;cursor:pointer}.bottom-nav-item.active{color:var(--primary);background:var(--primary-bg)}.bottom-nav-item:hover:not(.active){color:var(--text-secondary);background:var(--surface-2)}.bottom-nav-icon{font-size:1.3rem;line-height:1}.bottom-nav-fab{display:flex;flex-direction:column;align-items:center;gap:2px}.fab-btn{width:48px;height:48px;border-radius:var(--radius-full);background:var(--primary);color:#fff;border:none;display:flex;align-items:center;justify-content:center;font-size:1.5rem;box-shadow:var(--shadow-md);transition:transform .15s,background .15s;cursor:pointer;margin-bottom:2px}.fab-btn:hover{background:var(--primary-dark);transform:scale(1.05)}.fab-btn.open{background:var(--primary-dark);transform:rotate(45deg)}.fab-label{font-size:.65rem;font-weight:500;color:var(--text-muted)}.sheet-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;z-index:100;animation:fadeIn .2s ease}.log-sheet{position:fixed;bottom:0;left:0;right:0;z-index:101;background:var(--surface);border-radius:var(--radius-xl) var(--radius-xl) 0 0;padding:8px 16px 32px;animation:slideUp .25s ease;box-shadow:var(--shadow-lg)}.sheet-handle{width:36px;height:4px;background:var(--border);border-radius:var(--radius-full);margin:0 auto 20px}.sheet-title{font-size:.75rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:12px}.log-options{display:grid;gap:8px}.log-option-btn{display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:var(--radius-lg);border:1.5px solid var(--border);background:var(--surface);cursor:pointer;transition:border-color .15s,background .15s}.log-option-btn:hover{border-color:var(--primary);background:var(--primary-bg)}.log-option-icon{font-size:1.5rem;width:40px;height:40px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;flex-shrink:0}.log-option-icon.food{background:#fef9c3}.log-option-icon.symptom{background:#fee2e2}.log-option-icon.bowel{background:#e0f2fe}.log-option-text{text-align:left}.log-option-text strong{display:block;font-size:.95rem;color:var(--text)}.log-option-text span{font-size:.8rem;color:var(--text-secondary)}.card{background:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border);padding:16px;box-shadow:var(--shadow-sm)}.card-sm{padding:12px;border-radius:var(--radius)}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.card-title{font-size:.85rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}.tier-badge{display:inline-flex;align-items:center;gap:4px;padding:2px 10px;border-radius:var(--radius-full);font-size:.72rem;font-weight:600;letter-spacing:.03em}.tier-badge.safe{background:var(--safe-bg);color:var(--safe-text);border:1px solid var(--safe-border)}.tier-badge.moderate{background:var(--moderate-bg);color:var(--moderate-text);border:1px solid var(--moderate-border)}.tier-badge.irritating{background:var(--irritating-bg);color:var(--irritating-text);border:1px solid var(--irritating-border)}.tier-badge.insufficient{background:var(--unknown-bg);color:var(--unknown-text);border:1px solid var(--unknown-border)}.food-card{background:var(--surface);border-radius:var(--radius-lg);border:2px solid var(--border);padding:14px;transition:box-shadow .15s,border-color .15s;cursor:pointer}.food-card:hover{box-shadow:var(--shadow-md)}.food-card.safe{border-color:var(--safe-border);background:var(--safe-bg)}.food-card.moderate{border-color:var(--moderate-border);background:var(--moderate-bg)}.food-card.irritating{border-color:var(--irritating-border);background:var(--irritating-bg)}.food-card-name{font-size:.95rem;font-weight:600;color:var(--text);margin-bottom:8px;text-transform:capitalize}.food-card-stats{display:flex;gap:12px;font-size:.75rem;color:var(--text-secondary);margin-bottom:8px}.food-card-stat{display:flex;align-items:center;gap:3px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 18px;border-radius:var(--radius);border:none;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .15s;white-space:nowrap}.btn-primary{background:var(--primary);color:var(--text-on-primary);box-shadow:var(--shadow-sm)}.btn-primary:hover{background:var(--primary-dark);box-shadow:var(--shadow)}.btn-secondary{background:var(--surface);color:var(--text);border:1.5px solid var(--border)}.btn-secondary:hover{background:var(--surface-2);border-color:var(--text-secondary)}.btn-ghost{background:transparent;color:var(--primary);border:none}.btn-ghost:hover{background:var(--primary-bg)}.btn-danger{background:var(--irritating-bg);color:var(--irritating-text);border:1.5px solid var(--irritating-border)}.btn-danger:hover{background:#fecaca}.btn-sm{padding:6px 12px;font-size:.8rem;border-radius:var(--radius-sm)}.btn-lg{padding:14px 24px;font-size:1rem;border-radius:var(--radius-lg)}.btn-full{width:100%}.btn:disabled{opacity:.5;cursor:not-allowed}.form-group{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}.form-label{font-size:.85rem;font-weight:600;color:var(--text-secondary)}.form-label .required{color:var(--irritating);margin-left:2px}.form-input,.form-select,.form-textarea{padding:10px 12px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:.9rem;color:var(--text);background:var(--surface);transition:border-color .15s,box-shadow .15s;width:100%}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #2e7d5e1a}.form-textarea{resize:vertical;min-height:72px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.form-row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}.form-hint{font-size:.75rem;color:var(--text-muted)}.form-error{font-size:.75rem;color:var(--irritating)}.chip-grid{display:flex;flex-wrap:wrap;gap:8px}.chip{padding:6px 14px;border-radius:var(--radius-full);border:1.5px solid var(--border);font-size:.82rem;font-weight:500;cursor:pointer;background:var(--surface);color:var(--text-secondary);transition:all .15s}.chip:hover{border-color:var(--primary);color:var(--primary)}.chip.selected{background:var(--primary);border-color:var(--primary);color:#fff}.meal-selector{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.meal-btn{display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 8px;border-radius:var(--radius);border:1.5px solid var(--border);background:var(--surface);cursor:pointer;transition:all .15s}.meal-btn.active{border-color:var(--primary);background:var(--primary-bg)}.meal-btn-icon{font-size:1.4rem}.meal-btn-label{font-size:.72rem;font-weight:500;color:var(--text-secondary)}.meal-btn.active .meal-btn-label{color:var(--primary)}.severity-selector{display:flex;gap:8px}.severity-btn{flex:1;padding:10px 4px;border-radius:var(--radius);border:1.5px solid var(--border);background:var(--surface);cursor:pointer;font-size:.8rem;font-weight:600;text-align:center;transition:all .15s;color:var(--text-secondary)}.severity-btn[data-level="1"].active{background:#ecfdf5;border-color:#6ee7b7;color:#065f46}.severity-btn[data-level="2"].active{background:#fffbeb;border-color:#86efac;color:#166534}.severity-btn[data-level="3"].active{background:#fffbeb;border-color:#fcd34d;color:#92400e}.severity-btn[data-level="4"].active{background:#fff7ed;border-color:#fca5a5;color:#9a3412}.severity-btn[data-level="5"].active{background:#fef2f2;border-color:#f87171;color:#7f1d1d}.bristol-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}@media (max-width: 480px){.bristol-grid{grid-template-columns:repeat(4,1fr)}}.bristol-btn{display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 6px;border-radius:var(--radius);border:1.5px solid var(--border);background:var(--surface);cursor:pointer;transition:all .15s;font-size:.7rem;text-align:center}.bristol-btn-num{font-size:1rem;font-weight:700;color:var(--text-secondary)}.bristol-btn-icon{font-size:1.2rem}.bristol-btn.active{border-color:var(--primary);background:var(--primary-bg)}.bristol-btn.active .bristol-btn-num{color:var(--primary)}.bristol-desc{margin-top:8px;padding:10px 12px;background:var(--surface-2);border-radius:var(--radius);font-size:.8rem;color:var(--text-secondary);min-height:40px}.food-search-wrap{position:relative}.food-dropdown{position:absolute;top:calc(100% + 4px);left:0;right:0;background:var(--surface);border:1.5px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-md);max-height:240px;overflow-y:auto;z-index:20}.food-dropdown-item{padding:10px 14px;font-size:.875rem;cursor:pointer;transition:background .1s;color:var(--text)}.food-dropdown-item:hover{background:var(--primary-bg);color:var(--primary)}.food-dropdown-item.add-custom{color:var(--primary);font-weight:500}.food-tags{display:flex;flex-wrap:wrap;gap:8px;min-height:32px}.food-tag{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;background:var(--primary-bg);color:var(--primary-dark);border-radius:var(--radius-full);font-size:.82rem;font-weight:500;border:1px solid var(--primary-light)}.food-tag-remove{cursor:pointer;font-size:.9rem;color:var(--primary);background:none;border:none;padding:0;line-height:1;opacity:.7;transition:opacity .1s}.food-tag-remove:hover{opacity:1}.portion-row{display:grid;grid-template-columns:1fr 120px;gap:8px}.log-entry{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--border-soft)}.log-entry:last-child{border-bottom:none}.log-entry-icon{width:36px;height:36px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0}.log-entry-icon.food{background:#fef9c3}.log-entry-icon.symptom{background:#fee2e2}.log-entry-icon.bowel{background:#e0f2fe}.log-entry-body{flex:1;min-width:0}.log-entry-title{font-size:.875rem;font-weight:600;color:var(--text);margin-bottom:2px}.log-entry-meta{font-size:.75rem;color:var(--text-muted)}.log-entry-actions{display:flex;align-items:flex-start}.icon-btn{width:28px;height:28px;border-radius:var(--radius-sm);border:none;background:transparent;color:var(--text-muted);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:.8rem;transition:background .1s,color .1s}.icon-btn:hover{background:var(--irritating-bg);color:var(--irritating)}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.stat-card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);padding:12px;text-align:center}.stat-num{font-size:1.5rem;font-weight:700;color:var(--primary);line-height:1}.stat-label{font-size:.7rem;color:var(--text-muted);margin-top:4px;font-weight:500}.pattern-alert{display:flex;gap:12px;padding:14px;border-radius:var(--radius-lg);border:1px solid;margin-bottom:10px}.pattern-alert.warning{background:#fffbeb;border-color:#fcd34d}.pattern-alert.info{background:var(--primary-bg);border-color:var(--primary-light)}.pattern-alert-icon{font-size:1.2rem;flex-shrink:0}.pattern-alert-body{flex:1}.pattern-alert-title{font-size:.85rem;font-weight:600;color:var(--text);margin-bottom:4px}.pattern-alert-text{font-size:.8rem;color:var(--text-secondary);line-height:1.5}.pattern-alert-cta{font-size:.75rem;font-weight:600;color:var(--primary);margin-top:6px;cursor:pointer}.onboarding-shell{min-height:100vh;background:linear-gradient(160deg,var(--primary-bg) 0%,#fff 60%);display:flex;flex-direction:column}.onboarding-header{padding:48px 24px 24px;text-align:center}.onboarding-logo{font-size:3.5rem;margin-bottom:12px}.onboarding-app-name{font-size:2rem;font-weight:800;color:var(--primary);margin-bottom:6px}.onboarding-tagline{font-size:.95rem;color:var(--text-secondary);max-width:280px;margin:0 auto}.onboarding-body{flex:1;padding:16px 24px 32px;max-width:480px;width:100%;margin:0 auto}.step-indicator{display:flex;gap:6px;justify-content:center;margin-bottom:28px}.step-dot{width:6px;height:6px;border-radius:var(--radius-full);background:var(--border);transition:all .2s}.step-dot.active{background:var(--primary);width:24px}.step-dot.done{background:var(--safe)}.step-title{font-size:1.3rem;font-weight:700;color:var(--text);margin-bottom:6px}.step-sub{font-size:.875rem;color:var(--text-secondary);margin-bottom:24px;line-height:1.5}.step-actions{display:flex;gap:10px;margin-top:28px}.onboarding-privacy{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px;margin-top:16px}.onboarding-privacy-title{font-size:.85rem;font-weight:600;color:var(--text);margin-bottom:8px;display:flex;align-items:center;gap:6px}.onboarding-privacy-text{font-size:.78rem;color:var(--text-secondary);line-height:1.6}.dash-greeting{padding:20px 0 8px}.dash-greeting-name{font-size:1.4rem;font-weight:700;color:var(--text)}.dash-greeting-date{font-size:.82rem;color:var(--text-muted);margin-top:2px}.quick-log-bar{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:12px 0}.quick-log-btn{display:flex;flex-direction:column;align-items:center;gap:4px;padding:12px 8px;border-radius:var(--radius-lg);border:1.5px solid var(--border);background:var(--surface);cursor:pointer;transition:all .15s;box-shadow:var(--shadow-xs)}.quick-log-btn:hover{border-color:var(--primary);box-shadow:var(--shadow);transform:translateY(-1px)}.quick-log-btn-icon{font-size:1.5rem}.quick-log-btn-label{font-size:.72rem;font-weight:600;color:var(--text-secondary)}.tier-filter-bar{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;margin-bottom:16px;scrollbar-width:none}.tier-filter-bar::-webkit-scrollbar{display:none}.tier-filter-btn{padding:6px 16px;border-radius:var(--radius-full);border:1.5px solid var(--border);background:var(--surface);font-size:.8rem;font-weight:500;cursor:pointer;white-space:nowrap;transition:all .15s;color:var(--text-secondary)}.tier-filter-btn.active-all{background:var(--text);color:#fff;border-color:var(--text)}.tier-filter-btn.active-safe{background:var(--safe-bg);color:var(--safe-text);border-color:var(--safe-border)}.tier-filter-btn.active-moderate{background:var(--moderate-bg);color:var(--moderate-text);border-color:var(--moderate-border)}.tier-filter-btn.active-irritating{background:var(--irritating-bg);color:var(--irritating-text);border-color:var(--irritating-border)}.tier-filter-btn.active-insufficient{background:var(--unknown-bg);color:var(--unknown-text);border-color:var(--unknown-border)}.food-tiers-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}@media (min-width: 560px){.food-tiers-grid{grid-template-columns:repeat(3,1fr)}}.alt-panel{background:var(--primary-bg-soft);border:1px solid var(--primary-light);border-radius:var(--radius-lg);padding:14px;margin-top:10px}.alt-panel-title{font-size:.8rem;font-weight:700;color:var(--primary-dark);margin-bottom:10px;text-transform:uppercase;letter-spacing:.05em}.alt-item{display:flex;gap:10px;padding:8px 0;border-bottom:1px solid var(--border-soft)}.alt-item:last-child{border-bottom:none}.alt-item-name{font-size:.875rem;font-weight:600;color:var(--text);margin-bottom:2px}.alt-item-reason{font-size:.77rem;color:var(--text-secondary)}.alt-item-icon{font-size:1.1rem}.chart-wrap{overflow-x:auto;padding-bottom:4px}.chart-container{background:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border);padding:16px}.chart-title{font-size:.85rem;font-weight:600;color:var(--text-secondary);margin-bottom:14px}.profile-section{margin-bottom:20px}.profile-section-title{font-size:.75rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px;padding:0 4px}.allergen-tag{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;background:var(--surface);border:1.5px solid var(--border);border-radius:var(--radius-full);font-size:.8rem;cursor:pointer;transition:all .15s;color:var(--text-secondary)}.allergen-tag.selected{background:var(--irritating-bg);border-color:var(--irritating-border);color:var(--irritating-text)}.disclaimer-bar{background:#fff8f0;border-top:1px solid #FED7AA;padding:10px 16px;text-align:center}.disclaimer-text{font-size:.72rem;color:#92400e;line-height:1.5;max-width:640px;margin:0 auto}.empty-state{text-align:center;padding:40px 20px;color:var(--text-muted)}.empty-state-icon{font-size:3rem;margin-bottom:12px}.empty-state-title{font-size:1rem;font-weight:600;color:var(--text-secondary);margin-bottom:6px}.empty-state-text{font-size:.82rem;line-height:1.5;max-width:260px;margin:0 auto 16px}.divider{height:1px;background:var(--border);margin:16px 0}.section-gap{margin-top:20px}.info-box{background:var(--primary-bg);border:1px solid var(--primary-light);border-radius:var(--radius);padding:10px 12px;font-size:.78rem;color:var(--primary-dark);line-height:1.5;display:flex;gap:8px}.info-box-icon{font-size:.9rem;flex-shrink:0;margin-top:1px}.back-btn{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:.875rem;font-weight:500;cursor:pointer;background:none;border:none;padding:4px 0;margin-bottom:8px;transition:opacity .15s}.back-btn:hover{opacity:.75}.page-header{padding:16px 0 12px;border-bottom:1px solid var(--border-soft);margin-bottom:20px}.page-header-title{font-size:1.25rem;font-weight:700;color:var(--text)}.page-header-sub{font-size:.82rem;color:var(--text-muted);margin-top:2px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}@keyframes slideDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{to{transform:rotate(360deg)}}.spinner{display:inline-block;width:18px;height:18px;border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;vertical-align:middle}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@media (min-width: 640px){.page-container{padding:20px 24px 0}.form-row{gap:16px}.quick-log-bar{gap:12px}}@media (min-width: 768px){.stats-grid{grid-template-columns:repeat(4,1fr)}}