:root{--color-bg-primary:#0f0f0f;--color-bg-secondary:#1a1a1a;--color-bg-tertiary:#242424;--color-bg-hover:#2a2a2a;--color-text-primary:#f5f5f5;--color-text-secondary:#a0a0a0;--color-text-muted:#666;--color-border:#2a2a2a;--color-border-light:#333;--color-accent:#60a5fa;--color-accent-hover:#3b82f6;--color-success:#4ade80;--color-success-bg:#4ade801a;--color-warning:#fbbf24;--color-warning-bg:#fbbf241a;--color-danger:#f87171;--color-danger-bg:#f871711a;--color-bp:#f472b6;--color-glucose:#a78bfa;--color-ketones:#34d399;--color-weight:#fbbf24;--color-sleep:#818cf8;--color-hr:#fb7185;--color-hrv:#2dd4bf;--color-br:#a3e635;--spacing-xs:.25rem;--spacing-sm:.5rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem;--spacing-2xl:3rem;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--shadow-sm:0 1px 2px #0000004d;--shadow-md:0 4px 6px #0000004d;--shadow-lg:0 10px 15px #0000004d;--transition-fast:.15s ease;--transition-normal:.25s ease;--sidebar-width:240px;--header-height:64px}[data-theme=light]{--color-bg-primary:#fff;--color-bg-secondary:#f5f5f5;--color-bg-tertiary:#eee;--color-bg-hover:#e5e5e5;--color-text-primary:#1a1a1a;--color-text-secondary:#666;--color-text-muted:#999;--color-border:#e0e0e0;--color-border-light:#eee;--color-accent:#3b82f6;--color-accent-hover:#2563eb;--shadow-sm:0 1px 2px #0000001a;--shadow-md:0 4px 6px #0000001a;--shadow-lg:0 10px 15px #0000001a}*{box-sizing:border-box;margin:0;padding:0}html{font-size:16px}body{color:var(--color-text-primary);background-color:var(--color-bg-primary);font-synthesis:none;min-height:100vh;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5}#root{min-height:100vh}a{color:var(--color-accent);transition:color var(--transition-fast);text-decoration:none}a:hover{color:var(--color-accent-hover)}h1,h2,h3,h4,h5,h6{color:var(--color-text-primary);font-weight:600;line-height:1.2}h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.25rem}h4{font-size:1rem}p{color:var(--color-text-secondary)}input,select,textarea,button{font-family:inherit;font-size:inherit}:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}::selection{background-color:var(--color-accent);color:#fff}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-secondary)}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}.sidebar{width:var(--sidebar-width);background-color:var(--color-bg-secondary);border-right:1px solid var(--color-border);height:100vh;padding:var(--spacing-lg);flex-direction:column;display:flex;position:fixed;top:0;left:0}.sidebar__header{margin-bottom:var(--spacing-xl)}.sidebar__logo{color:var(--color-accent);font-size:1.25rem;font-weight:700}.sidebar__nav{gap:var(--spacing-xs);flex-direction:column;flex:1;display:flex}.sidebar__link{align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm)var(--spacing-md);border-radius:var(--radius-md);color:var(--color-text-secondary);transition:all var(--transition-fast);text-decoration:none;display:flex}.sidebar__link:hover{background-color:var(--color-bg-hover);color:var(--color-text-primary)}.sidebar__link--active{background-color:var(--color-accent);color:#fff}.sidebar__link--active:hover{background-color:var(--color-accent-hover);color:#fff}.sidebar__icon{flex-shrink:0;width:20px;height:20px}.sidebar__footer{padding-top:var(--spacing-lg);border-top:1px solid var(--color-border);gap:var(--spacing-md);flex-direction:column;display:flex}.sidebar__theme-toggle{align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm)var(--spacing-md);border-radius:var(--radius-md);color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;display:flex}.sidebar__theme-toggle:hover{background-color:var(--color-bg-hover);color:var(--color-text-primary)}.sidebar__user{align-items:center;gap:var(--spacing-sm);display:flex}.sidebar__avatar{background-color:var(--color-accent);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;font-size:.875rem;font-weight:600;display:flex}.sidebar__user-info{flex-direction:column;display:flex}.sidebar__user-name{color:var(--color-text-primary);font-size:.875rem;font-weight:500}.sidebar__signout{color:var(--color-text-muted);cursor:pointer;text-align:left;background:0 0;border:none;padding:0;font-size:.75rem}.sidebar__signout:hover{color:var(--color-danger)}.loading-screen{background-color:var(--color-bg-primary);justify-content:center;align-items:center;min-height:100vh;display:flex}.loading-spinner{border:3px solid var(--color-border);border-top-color:var(--color-accent);border-radius:50%;width:40px;height:40px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.layout{min-height:100vh}.layout__main{margin-left:var(--sidebar-width);min-height:100vh;padding:var(--spacing-xl);background-color:var(--color-bg-primary)}.page-header{margin-bottom:var(--spacing-xl)}.page-title{color:var(--color-text-primary);margin:0 0 var(--spacing-xs)0;font-size:1.75rem;font-weight:600}.page-subtitle{color:var(--color-text-secondary);margin:0;font-size:.875rem}.grid{gap:var(--spacing-lg);display:grid}.grid--2{grid-template-columns:repeat(2,1fr)}.grid--3{grid-template-columns:repeat(3,1fr)}.grid--4{grid-template-columns:repeat(4,1fr)}@media (max-width:1200px){.grid--4{grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.grid--2,.grid--3,.grid--4{grid-template-columns:1fr}}.btn{justify-content:center;align-items:center;gap:var(--spacing-sm);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);border:none;font-weight:500;display:inline-flex}.btn:disabled{opacity:.5;cursor:not-allowed}.btn--primary{background-color:var(--color-accent);color:#fff}.btn--primary:hover:not(:disabled){background-color:var(--color-accent-hover)}.btn--secondary{background-color:var(--color-bg-tertiary);color:var(--color-text-primary);border:1px solid var(--color-border)}.btn--secondary:hover:not(:disabled){background-color:var(--color-bg-hover);border-color:var(--color-border-light)}.btn--ghost{color:var(--color-text-secondary);background-color:#0000}.btn--ghost:hover:not(:disabled){background-color:var(--color-bg-hover);color:var(--color-text-primary)}.btn--danger{background-color:var(--color-danger);color:#fff}.btn--danger:hover:not(:disabled){opacity:.9}.btn--sm{padding:var(--spacing-xs)var(--spacing-sm);font-size:.875rem}.btn--md{padding:var(--spacing-sm)var(--spacing-md);font-size:1rem}.btn--lg{padding:var(--spacing-md)var(--spacing-lg);font-size:1.125rem}.btn--full-width{width:100%}.btn--loading{position:relative}.btn__spinner{border:2px solid #0000;border-top-color:currentColor;border-radius:50%;width:16px;height:16px;animation:.8s linear infinite spin}.input-group{gap:var(--spacing-xs);flex-direction:column;display:flex}.input-group--full-width{width:100%}.input-group__label{color:var(--color-text-primary);font-size:.875rem;font-weight:500}.input-group__input{padding:var(--spacing-sm)var(--spacing-md);background-color:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text-primary);transition:all var(--transition-fast)}.input-group__input::placeholder{color:var(--color-text-muted)}.input-group__input:hover{border-color:var(--color-border-light)}.input-group__input:focus{border-color:var(--color-accent);outline:none;box-shadow:0 0 0 3px #60a5fa1a}.input-group__input--error{border-color:var(--color-danger)}.input-group__input--error:focus{box-shadow:0 0 0 3px #f871711a}.input-group__select{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23666666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right var(--spacing-md)center;padding-right:calc(var(--spacing-md)*2 + 16px)}.input-group__textarea{resize:vertical;min-height:80px}.input-group__error{color:var(--color-danger);font-size:.75rem}.input-group__help{color:var(--color-text-muted);font-size:.75rem}.card{background-color:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg)}.card--padding-sm{padding:var(--spacing-sm)}.card--padding-md{padding:var(--spacing-md)}.card--padding-lg{padding:var(--spacing-lg)}.card--padding-xl{padding:var(--spacing-xl)}.card__header{margin-bottom:var(--spacing-md);justify-content:space-between;align-items:center;display:flex}.card__title{color:var(--color-text-primary);margin:0;font-size:1rem;font-weight:600}.card__content{color:var(--color-text-secondary)}.card__footer{margin-top:var(--spacing-md);padding-top:var(--spacing-md);border-top:1px solid var(--color-border);gap:var(--spacing-sm);display:flex}.auth-page{min-height:100vh;padding:var(--spacing-lg);background-color:var(--color-bg-primary);justify-content:center;align-items:center;display:flex}.auth-card{width:100%;max-width:400px}.auth-logo{color:var(--color-accent);font-size:1.5rem;font-weight:700}.auth-form{gap:var(--spacing-md);flex-direction:column;display:flex}.auth-title{color:var(--color-text-primary);margin:0;font-size:1.5rem;font-weight:600}.auth-subtitle{color:var(--color-text-secondary);margin:0 0 var(--spacing-sm)0;font-size:.875rem}.auth-error{padding:var(--spacing-sm)var(--spacing-md);background-color:var(--color-danger-bg);border:1px solid var(--color-danger);border-radius:var(--radius-md);color:var(--color-danger);font-size:.875rem}.auth-footer{text-align:center;color:var(--color-text-secondary);margin:0;font-size:.875rem}.auth-footer a{font-weight:500}.metric-history__loading,.metric-history__empty{text-align:center;color:var(--color-text-muted);padding:var(--spacing-xl)}.metric-history__table-wrapper{overflow-x:auto}.metric-history__table{border-collapse:collapse;width:100%}.metric-history__table th,.metric-history__table td{padding:var(--spacing-sm)var(--spacing-md);text-align:left;border-bottom:1px solid var(--color-border)}.metric-history__table th{color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem;font-weight:600}.metric-history__table tbody tr:hover{background-color:var(--color-bg-hover)}.metric-history__date{white-space:nowrap;font-size:.875rem}.metric-history__value{font-weight:500}.metric-history__notes{text-overflow:ellipsis;white-space:nowrap;max-width:200px;color:var(--color-text-secondary);font-size:.875rem;overflow:hidden}.metric-history__actions{text-align:right}.chart-container{width:100%}.chart-empty{background-color:var(--color-bg-tertiary);border-radius:var(--radius-md);color:var(--color-text-muted);justify-content:center;align-items:center;display:flex}.chart-empty p{color:var(--color-text-muted);margin:0}.recharts-tooltip-wrapper{outline:none}.metric-page{max-width:900px}.metric-page .page-header{margin-bottom:var(--spacing-xl);justify-content:space-between;align-items:flex-start;display:flex}.metric-page__form-card,.metric-page__latest,.metric-page__stats,.metric-page__chart{margin-bottom:var(--spacing-xl)}.metric-form{gap:var(--spacing-md);flex-direction:column;display:flex}.metric-form__row{gap:var(--spacing-md);grid-template-columns:repeat(auto-fit,minmax(150px,1fr));display:grid}.metric-form__error{padding:var(--spacing-sm)var(--spacing-md);background-color:var(--color-danger-bg);border:1px solid var(--color-danger);border-radius:var(--radius-md);color:var(--color-danger);font-size:.875rem}.metric-form__actions{padding-top:var(--spacing-sm);justify-content:flex-end;display:flex}.latest-reading{gap:var(--spacing-xs);flex-direction:column;display:flex}.latest-reading__value{align-items:baseline;gap:var(--spacing-xs);font-size:2.5rem;font-weight:600;line-height:1;display:flex}.latest-reading__unit{color:var(--color-text-muted);font-size:1rem;font-weight:400}.latest-reading__secondary{color:var(--color-text-secondary);font-size:.875rem}.latest-reading__category{margin-top:var(--spacing-xs);font-size:.875rem;font-weight:500}.ketone-zones{margin-bottom:var(--spacing-xl)}.ketone-zones__list{gap:var(--spacing-sm);flex-direction:column;display:flex}.ketone-zone{padding:var(--spacing-xs)0;justify-content:space-between;font-size:.875rem;display:flex}.ketone-zone__range{font-weight:500}.ketone-zone__label{color:inherit}.weight-goal{margin-bottom:var(--spacing-xl)}.weight-goal__stats{margin-bottom:var(--spacing-lg);justify-content:space-between;display:flex}.weight-goal__stat{align-items:center;gap:var(--spacing-xs);flex-direction:column;display:flex}.weight-goal__label{color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem}.weight-goal__value{font-size:1.5rem;font-weight:600}.weight-goal__progress{margin-bottom:var(--spacing-lg)}.weight-goal__progress-bar{background-color:var(--color-bg-tertiary);border-radius:var(--radius-md);height:12px;margin-bottom:var(--spacing-xs);overflow:hidden}.weight-goal__progress-fill{background:linear-gradient(90deg,var(--color-weight),var(--color-success));border-radius:var(--radius-md);height:100%;transition:width .3s}.weight-goal__progress-text{color:var(--color-text-secondary);text-align:center;font-size:.875rem;display:block}.weight-goal__details{gap:var(--spacing-sm);padding-top:var(--spacing-md);border-top:1px solid var(--color-border);flex-direction:column;display:flex}.weight-goal__detail{justify-content:space-between;align-items:center;display:flex}.weight-goal__detail-label{color:var(--color-text-secondary);font-size:.875rem}.weight-goal__detail-value{align-items:center;gap:var(--spacing-sm);font-size:.875rem;font-weight:500;display:flex}.weight-goal__detail-percent{color:var(--color-text-muted);font-weight:400}.gki-preview{align-items:center;gap:var(--spacing-sm);padding:var(--spacing-md);background-color:var(--color-bg-tertiary);border-radius:var(--radius-md);display:flex}.gki-preview__label{color:var(--color-text-secondary);font-size:.875rem}.gki-preview__value{color:var(--color-accent);font-size:1.25rem;font-weight:600}.gk-readings{margin-bottom:var(--spacing-xl)}.gk-readings__grid{gap:var(--spacing-lg);grid-template-columns:repeat(3,1fr);display:grid}.gk-readings__item{text-align:center;align-items:center;gap:var(--spacing-xs);flex-direction:column;display:flex}.gk-readings__value{align-items:baseline;gap:var(--spacing-xs);font-size:2rem;font-weight:600;line-height:1;display:flex}.gk-readings__unit{color:var(--color-text-muted);font-size:.875rem;font-weight:400}.gk-readings__label{color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem}.gk-readings__category{font-size:.75rem;font-weight:500}.gki-zones{margin-bottom:var(--spacing-xl)}.daily-stats-grid{gap:var(--spacing-lg);grid-template-columns:repeat(auto-fit,minmax(100px,1fr));display:grid}.daily-stat{text-align:center;align-items:center;gap:var(--spacing-xs);flex-direction:column;display:flex}.daily-stat__value{align-items:baseline;gap:2px;font-size:2rem;font-weight:600;line-height:1;display:flex}.daily-stat__unit{color:var(--color-text-muted);font-size:.875rem;font-weight:400}.daily-stat__label{color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem}.sleep-input-group{gap:var(--spacing-xs);flex-direction:column;display:flex}.sleep-input-group .input-label{color:var(--color-text-secondary);font-size:.875rem;font-weight:500}.sleep-inputs{align-items:center;gap:var(--spacing-xs);display:flex}.sleep-inputs .input-wrapper{width:70px}.sleep-input-label{color:var(--color-text-muted);font-size:.875rem}.settings-page{max-width:600px}.settings-page__sections{gap:var(--spacing-lg);flex-direction:column;display:flex}.settings-form{gap:var(--spacing-md);flex-direction:column;display:flex}.settings-message{padding:var(--spacing-sm)var(--spacing-md);border-radius:var(--radius-md);font-size:.875rem}.settings-message--success{background-color:var(--color-success-bg);border:1px solid var(--color-success);color:var(--color-success)}.settings-message--error{background-color:var(--color-danger-bg);border:1px solid var(--color-danger);color:var(--color-danger)}.settings-option{justify-content:space-between;align-items:center;gap:var(--spacing-lg);display:flex}.settings-option__info{gap:var(--spacing-xs);flex-direction:column;display:flex}.settings-option__label{color:var(--color-text-primary);font-weight:500}.settings-option__description{color:var(--color-text-secondary);font-size:.875rem}