:root{--color-bg: #f4f6f9;--color-surface: #ffffff;--color-surface-raised: #ffffff;--color-border: #e2e8f0;--color-text: #1a202c;--color-text-muted: #718096;--color-primary: #4f7df0;--color-primary-dark: #3a68d8;--color-primary-light: #ebf0ff;--color-danger: #e53e3e;--color-danger-light: #fff5f5;--color-success: #38a169;--color-up: #e53e3e;--color-down: #38a169;--color-neutral: #718096;--radius: 14px;--radius-sm: 8px;--shadow: 0 1px 4px rgba(0, 0, 0, .08), 0 4px 16px rgba(0, 0, 0, .06);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .07);--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--nav-height: 68px;--safe-bottom: env(safe-area-inset-bottom, 0px)}:root.dark{--color-bg: #111827;--color-surface: #1f2937;--color-surface-raised: #283040;--color-border: #374151;--color-text: #f1f5f9;--color-text-muted: #94a3b8;--color-primary: #6690f5;--color-primary-dark: #4f7df0;--color-primary-light: #1e2d4a;--color-danger: #fc8181;--color-danger-light: #2d1515;--shadow: 0 1px 4px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .2)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font);font-size:16px;-webkit-text-size-adjust:100%;background:var(--color-bg);color:var(--color-text)}body{min-height:100dvh;overscroll-behavior-y:none}.app-shell{display:flex;flex-direction:column;min-height:100dvh;background:var(--color-bg);position:relative;max-width:480px;margin:0 auto}.main-content{flex:1;overflow-y:auto;padding-bottom:calc(var(--nav-height) + var(--safe-bottom) + 16px);-webkit-overflow-scrolling:touch}.page{padding:0 16px 24px;display:flex;flex-direction:column;gap:12px}.page-header{padding-top:20px;padding-bottom:4px}.app-title{font-size:1.25rem;font-weight:700;color:var(--color-text);letter-spacing:-.3px}.card{background:var(--color-surface);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);border:1px solid var(--color-border)}.card__label{font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted);margin-bottom:6px}.hero-card{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-primary-dark) 100%);border:none;color:#fff}.hero-card__label{font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;opacity:.85;margin-bottom:4px}.hero-card__value{font-size:2.75rem;font-weight:800;line-height:1;letter-spacing:-1px;margin-bottom:4px}.hero-card__change{font-size:.9rem;opacity:.9}.hero-card__change.change--down{color:#a7f3d0}.hero-card__change.change--up{color:#fca5a5}.hero-card__change.change--good{color:#a7f3d0}.hero-card__change.change--bad{color:#fca5a5}.hero-card__streak{margin-top:8px;font-size:.8rem;background:rgba(255,255,255,.15);display:inline-block;padding:3px 10px;border-radius:99px}.weight-input-card__header{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.weight-input-card__title{font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted)}.unit-toggle{display:flex;background:var(--color-bg);border-radius:8px;padding:3px;gap:3px}.unit-btn{background:transparent;border:none;padding:5px 14px;border-radius:6px;font-size:.85rem;font-weight:600;color:var(--color-text-muted);cursor:pointer;transition:all .15s;min-height:32px}.unit-btn--active{background:var(--color-primary);color:#fff;box-shadow:var(--shadow-sm)}.weight-input-card__input-row{display:flex;align-items:center;gap:10px;margin-bottom:14px}.weight-input{flex:1;font-size:2rem;font-weight:700;color:var(--color-text);background:var(--color-bg);border:2px solid var(--color-border);border-radius:var(--radius-sm);padding:12px 16px;outline:none;transition:border-color .15s;-moz-appearance:textfield;-webkit-appearance:textfield;appearance:textfield;width:100%}.weight-input::-webkit-outer-spin-button,.weight-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.weight-input:focus{border-color:var(--color-primary)}.weight-input--sm{font-size:1.2rem;padding:10px 14px}.weight-input__unit{font-size:1.1rem;font-weight:600;color:var(--color-text-muted);white-space:nowrap}.input-error{color:var(--color-danger);font-size:.82rem;margin-top:-8px;margin-bottom:10px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:none;border-radius:var(--radius-sm);font-size:.95rem;font-weight:600;cursor:pointer;padding:12px 20px;min-height:44px;transition:opacity .15s,transform .1s;text-align:center;white-space:nowrap}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}.btn--full{width:100%}.btn--primary{background:var(--color-primary);color:#fff}.btn--primary:hover:not(:disabled){background:var(--color-primary-dark)}.btn--secondary{background:var(--color-primary-light);color:var(--color-primary)}.btn--ghost{background:var(--color-bg);color:var(--color-text-muted);border:1px solid var(--color-border)}.btn--danger{background:var(--color-danger-light);color:var(--color-danger)}.metrics-row{display:grid;grid-template-columns:1fr 1fr;gap:8px}.metric-card{background:var(--color-surface);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow-sm);border:1px solid var(--color-border)}.metric-card--accent{background:var(--color-primary-light);border-color:transparent}.metric-card__label{font-size:.68rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted);margin-bottom:4px}.metric-card__value{font-size:1.25rem;font-weight:700;color:var(--color-text);line-height:1.2}.metric-card__sub{font-size:.72rem;color:var(--color-text-muted);margin-top:2px}.change--down{color:var(--color-down)}.change--up{color:var(--color-up)}.change--neutral{color:var(--color-neutral)}.change--good{color:var(--color-down)}.change--bad{color:var(--color-up)}.chart-empty{text-align:center;color:var(--color-text-muted);font-size:.88rem;padding:24px 16px}.chart-tooltip{background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;padding:8px 12px;box-shadow:var(--shadow);font-size:.85rem}.chart-tooltip__date{color:var(--color-text-muted);font-size:.75rem}.chart-tooltip__value{font-weight:700;color:var(--color-text)}.insight-card__label{font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted);margin-bottom:6px}.insight-card__text{font-size:.9rem;color:var(--color-text);line-height:1.5}.insight-card__stats{display:flex;gap:16px;margin-top:10px;font-size:.82rem;color:var(--color-text-muted)}.total-progress{display:flex;flex-direction:column;gap:4px}.total-progress__value{font-weight:700;font-size:1.1rem}.empty-state{text-align:center;padding:32px 16px;color:var(--color-text-muted)}.empty-state p{font-size:1rem;font-weight:500}.empty-state__sub{font-size:.85rem;margin-top:6px}.bottom-nav{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:480px;height:calc(var(--nav-height) + var(--safe-bottom));background:var(--color-surface);border-top:1px solid var(--color-border);display:flex;padding-bottom:var(--safe-bottom);z-index:100;box-shadow:0 -2px 12px #00000014}.bottom-nav__item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;background:transparent;border:none;cursor:pointer;color:var(--color-text-muted);font-size:.72rem;font-weight:500;padding:8px;min-height:44px;transition:color .15s;-webkit-tap-highlight-color:transparent}.bottom-nav__item--active{color:var(--color-primary)}.bottom-nav__item svg{width:24px;height:24px}.toast{position:fixed;bottom:calc(var(--nav-height) + var(--safe-bottom) + 12px);left:50%;transform:translate(-50%);background:#1a202c;color:#fff;padding:10px 20px;border-radius:99px;font-size:.88rem;font-weight:500;white-space:nowrap;box-shadow:0 4px 20px #0003;z-index:200;animation:slideUp .2s ease;pointer-events:none}:root.dark .toast{background:#f1f5f9;color:#1a202c}@keyframes slideUp{0%{opacity:0;transform:translate(-50%) translateY(8px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.top-controls{position:fixed;top:14px;right:14px;z-index:50;display:flex;align-items:center;gap:8px}.lang-switcher{display:flex;background:var(--color-surface);border:1px solid var(--color-border);border-radius:99px;padding:3px;gap:2px;box-shadow:var(--shadow-sm)}.lang-btn{background:transparent;border:none;border-radius:99px;width:32px;height:32px;font-size:1.2rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s;-webkit-tap-highlight-color:transparent}.lang-btn--active{background:var(--color-primary-light);box-shadow:0 0 0 2px var(--color-primary)}.dark-mode-toggle{background:var(--color-surface);border:1px solid var(--color-border);border-radius:99px;width:38px;height:38px;font-size:1.1rem;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-sm);-webkit-tap-highlight-color:transparent}.shortcut-row{display:flex;gap:8px;overflow-x:auto;padding-bottom:2px;-webkit-overflow-scrolling:touch;scrollbar-width:none}.shortcut-row::-webkit-scrollbar{display:none}.shortcut-btn{flex-shrink:0;background:var(--color-surface);border:1px solid var(--color-border);border-radius:99px;padding:7px 14px;font-size:.82rem;font-weight:500;color:var(--color-text-muted);cursor:pointer;white-space:nowrap;min-height:36px;transition:all .15s;-webkit-tap-highlight-color:transparent}.shortcut-btn--active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.calendar-card{padding:12px 12px 8px}.calendar{width:100%}.calendar__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.calendar__month-label{font-size:.95rem;font-weight:700;color:var(--color-text)}.calendar__nav-btn{background:var(--color-bg);border:1px solid var(--color-border);border-radius:8px;width:34px;height:34px;font-size:1.3rem;line-height:1;cursor:pointer;color:var(--color-text);display:flex;align-items:center;justify-content:center;transition:background .1s;-webkit-tap-highlight-color:transparent}.calendar__nav-btn:disabled{opacity:.3;cursor:default}.calendar__nav-btn:not(:disabled):active{background:var(--color-border)}.calendar__grid{display:grid;grid-template-columns:repeat(7,1fr);gap:2px}.calendar__dow{text-align:center;font-size:.65rem;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;padding-bottom:6px}.calendar__cell{position:relative;aspect-ratio:1;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:.82rem;font-weight:500;border-radius:8px;border:none;background:transparent;color:var(--color-text);cursor:pointer;-webkit-tap-highlight-color:transparent;transition:background .1s;min-height:36px;gap:2px}.calendar__cell--blank{cursor:default}.calendar__cell:not(.calendar__cell--blank):not(.calendar__cell--disabled):hover{background:var(--color-primary-light)}.calendar__cell--today{font-weight:800;color:var(--color-primary)}.calendar__cell--selected{background:var(--color-primary)!important;color:#fff!important;font-weight:700}.calendar__cell--disabled{opacity:.25;cursor:default}.calendar__cell--has-entry{font-weight:700}.calendar__dot{width:4px;height:4px;border-radius:50%;background:var(--color-primary);display:block}.calendar__cell--selected .calendar__dot{background:rgba(255,255,255,.7)}.history-edit-form-card,.history-edit-form{display:flex;flex-direction:column;gap:10px}.history-edit-form__date{font-weight:600;font-size:1rem}.history-edit-form__existing{font-size:.85rem;color:var(--color-text-muted)}.history-edit-form__row{display:flex;align-items:center;gap:10px}.history-edit-form__actions{display:flex;gap:8px;flex-wrap:wrap}.history-list{display:flex;flex-direction:column;gap:10px}.week-group__label{font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted);padding:0 4px;margin-bottom:4px}.history-row{display:flex;align-items:center;padding:14px 16px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);width:100%;text-align:left;cursor:pointer;gap:12px;min-height:56px;transition:background .1s;-webkit-tap-highlight-color:transparent}.history-row--selected{border-color:var(--color-primary);background:var(--color-primary-light)}.history-row:active{background:var(--color-bg)}.history-row__date{flex:1;font-size:.92rem;font-weight:500;color:var(--color-text)}.history-row__weight{font-size:1.05rem;font-weight:700;color:var(--color-text)}.history-row__change{font-size:.82rem;font-weight:600;min-width:44px;text-align:right}.confirm-dialog{padding:16px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius)}.confirm-dialog p{font-size:.92rem;margin-bottom:12px}.confirm-dialog__actions{display:flex;gap:8px}.backup-controls__note{font-size:.82rem;color:var(--color-text-muted);margin-bottom:12px;line-height:1.4}.backup-controls__actions{display:flex;gap:8px;flex-wrap:wrap}.loading-screen{min-height:100dvh;display:flex;align-items:center;justify-content:center;background:var(--color-bg)}.loading-spinner{width:36px;height:36px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.objective-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--color-bg);z-index:300;display:flex;align-items:flex-end;justify-content:center;padding-bottom:env(safe-area-inset-bottom,0px)}@media (min-height: 600px){.objective-overlay{align-items:center}}.objective-sheet{width:100%;max-width:480px;padding:32px 20px 40px;display:flex;flex-direction:column;gap:24px}.objective-sheet__head{text-align:center;display:flex;flex-direction:column;align-items:center;gap:10px}.objective-sheet__icon{font-size:3rem;line-height:1}.objective-sheet__title{font-size:1.5rem;font-weight:800;color:var(--color-text);letter-spacing:-.5px}.objective-sheet__sub{font-size:.88rem;color:var(--color-text-muted);line-height:1.5;max-width:280px}.obj-options{display:flex;flex-direction:column;gap:12px}.obj-options--inline{flex-direction:row;gap:8px;flex-wrap:wrap}.obj-btn{border:2px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface);cursor:pointer;transition:border-color .15s,background .15s,transform .1s;-webkit-tap-highlight-color:transparent;text-align:left}.obj-btn:active{transform:scale(.98)}.obj-btn--full{display:flex;align-items:center;gap:16px;padding:18px 20px;width:100%}.obj-btn--compact{display:flex;flex-direction:column;align-items:center;gap:4px;padding:12px 16px;flex:1;min-width:80px}.obj-btn__emoji{font-size:2rem;line-height:1;flex-shrink:0}.obj-btn--compact .obj-btn__emoji{font-size:1.5rem}.obj-btn__body{flex:1;display:flex;flex-direction:column;gap:2px}.obj-btn__title{font-size:1rem;font-weight:700;color:var(--color-text)}.obj-btn--compact .obj-btn__title{font-size:.78rem;font-weight:600;text-align:center}.obj-btn__desc{font-size:.8rem;color:var(--color-text-muted);line-height:1.4}.obj-btn__arrow{font-size:1.4rem;color:var(--color-text-muted);flex-shrink:0}.obj-btn--lose:hover{border-color:#0d9488;background:#f0fdf9}.obj-btn--gain:hover{border-color:#d97706;background:#fffbeb}.obj-btn--maintain:hover{border-color:#7c3aed;background:#f5f3ff}:root.dark .obj-btn--lose:hover{background:#0f2e2b}:root.dark .obj-btn--gain:hover{background:#2e1f07}:root.dark .obj-btn--maintain:hover{background:#1e1533}.objective-inline{display:flex;flex-direction:column;gap:12px}.obj-badge{display:inline-flex;align-items:center;gap:5px;font-size:.72rem;font-weight:600;background:rgba(255,255,255,.18);color:#fff;border-radius:99px;padding:4px 10px;margin-top:10px;letter-spacing:.02em}@media (min-width: 480px){.app-shell{box-shadow:0 0 40px #0000001a}}