:root{color-scheme:light;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;--color-canvas: #f3f6f4;--color-surface: #ffffff;--color-surface-muted: #e9efeb;--color-text: #14241c;--color-text-muted: #52635a;--color-border: #d5ded8;--color-brand: #12643f;--color-brand-strong: #0b4b2e;--color-brand-soft: #dff2e7;--color-demo: #8c3d12;--color-demo-soft: #fff0df;--color-danger: #9b2c2c;--color-focus: #0c70c7;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--radius-sm: .5rem;--radius-md: .875rem;--radius-lg: 1.25rem;--shadow-sm: 0 1px 2px rgb(20 36 28 / 6%);--shadow-md: 0 18px 40px rgb(20 36 28 / 9%);--content-max: 76rem;--nav-width: 15.5rem}*{box-sizing:border-box}html{min-width:20rem;background:var(--color-canvas)}body{min-width:20rem;min-height:100vh;margin:0;background:var(--color-canvas);color:var(--color-text)}button,a,input,select,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--color-focus);outline-offset:3px}input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--color-focus);outline-offset:1px}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap}.skip-link{position:fixed;left:var(--space-4);top:var(--space-4);z-index:100;transform:translateY(-180%);border-radius:var(--radius-sm);background:var(--color-text);color:#fff;padding:var(--space-3) var(--space-4);font-weight:700}.skip-link:focus{transform:translateY(0)}.app-shell{display:grid;min-height:100vh;grid-template-areas:"header header" "nav 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#e5b989;border-radius:999px;background:var(--color-demo-soft);color:var(--color-demo);padding:.2rem .5rem;font-size:.68rem;font-weight:800;letter-spacing:.09em}.health-status{display:inline-flex;align-items:center;gap:var(--space-2);color:var(--color-text-muted);font-size:.8rem;font-weight:650;white-space:nowrap}.health-status__dot{width:.55rem;height:.55rem;border-radius:50%;background:#a2aaa6;box-shadow:0 0 0 4px #eef0ef}.health-status--healthy .health-status__dot{background:#238251;box-shadow:0 0 0 4px #e1f2e8}.health-status--unavailable{color:var(--color-danger)}.health-status--unavailable .health-status__dot{background:var(--color-danger);box-shadow:0 0 0 4px #fae9e9}.main-navigation{position:sticky;top:0;z-index:8;align-self:start;min-height:calc(100vh - 4.75rem);grid-area:nav;border-right:1px solid var(--color-border);background:var(--color-surface);padding:var(--space-8) var(--space-4)}.main-navigation__toggle{position:absolute;z-index:4;top:50%;right:-.9rem;display:grid;width:1.8rem;height:1.8rem;place-items:center;border:1px solid var(--color-border);border-radius:999px;background:#fff;color:var(--color-text-muted);transform:translateY(-50%)}.main-navigation__toggle:hover{background:var(--color-surface-muted);color:var(--color-text)}.main-navigation__label{margin:0 var(--space-2) var(--space-3);color:var(--color-text-muted);font-size:.7rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase}.app-shell--navigation-collapsed .main-navigation{padding-inline:var(--space-2)}.app-shell--navigation-collapsed .main-navigation__label,.app-shell--navigation-collapsed .main-navigation__link span{display:none}.app-shell--navigation-collapsed 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label{display:grid;gap:.4rem;color:var(--color-text-muted);font-weight:700}.period-create-dialog__fields input{width:100%;min-height:2.75rem;border:1px solid #bac8bf;border-radius:var(--radius-sm);padding:.65rem .75rem}.tab-menu__schedule{display:grid;gap:.3rem;padding:.65rem .8rem;border-block:1px solid var(--color-border);font-size:.8rem;font-weight:700}.tab-menu__schedule select{min-width:13rem}.builder-tabs-bar{display:flex;min-width:0;align-items:flex-end;z-index:2;margin-bottom:calc(-1 * var(--space-6));margin-top:0;padding-inline:var(--space-4);border-bottom:0}@media (max-width: 42rem){.period-planner__meta{align-items:stretch;flex-direction:column}.period-planner__meta label{justify-content:space-between}.period-menu--inline{grid-template-columns:1fr}.period-menu--inline .period-menu__dates,.period-menu--inline .period-menu__actions{grid-column:auto}.period-planner__summary{grid-template-columns:1fr}.period-planner__summary>p{grid-column:auto}.period-create-dialog__fields{grid-template-columns:1fr}}.builder-tabs-scroll{min-width:0;overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:thin}.builder-tabs{display:flex;width:-moz-max-content;width:max-content;min-width:100%;align-items:flex-end}.builder-tab{position:relative;display:flex;min-width:9rem;max-width:15rem;flex:0 0 auto;align-items:stretch;border:1px solid var(--color-border);border-bottom:3px solid transparent;border-radius:var(--radius-sm) var(--radius-sm) 0 0;background:#edf2ef}.drag-handle{display:inline-grid;min-width:2.75rem;min-height:2.75rem;flex:0 0 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#c6d2ca;border-radius:.4rem;background:#f8faf9;padding-block:.45rem;cursor:text}.builder-tab__rename:hover{border-color:#91a499;background:#fff}.builder-tab__rename:focus{border-color:var(--color-brand);background:#fff;outline:2px solid var(--color-focus);outline-offset:1px}.builder-tab__menu-button,.builder-tab__close-button,.add-tab-button{display:inline-grid;min-width:2.75rem;min-height:2.75rem;place-items:center;border:0;background:transparent;color:var(--color-text-muted)}.builder-tab__menu-button:hover,.builder-tab__menu-button:focus-visible{background:var(--color-surface-muted);color:var(--color-brand-strong)}.builder-tab__close-button:hover:not(:disabled){background:var(--color-surface-muted);color:var(--color-danger)}.builder-tab__close-button:disabled{cursor:not-allowed;opacity:.35}.add-tab-button{flex:0 0 auto;border:1px solid var(--color-border);border-bottom:3px solid transparent;border-radius:var(--radius-sm) var(--radius-sm) 0 0;background:var(--color-surface);color:var(--color-brand-strong)}.tab-menu{position:absolute;z-index:30;top:calc(100% + .35rem);right:0;display:grid;width:13rem;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);padding:var(--space-1);box-shadow:var(--shadow-md)}.tab-menu--fixed{position:fixed;top:auto;right:auto}.tab-menu button{display:flex;min-height:2.5rem;align-items:center;gap:var(--space-2);border:0;border-radius:.35rem;background:transparent;color:var(--color-text);padding:var(--space-2) var(--space-3);text-align:left}.tab-menu button:hover,.tab-menu button:focus-visible{background:var(--color-surface-muted)}.tab-menu .tab-menu__danger{color:var(--color-danger)}.builder-layout{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,32rem),1fr));gap:var(--space-5);align-items:start}.builder-panel{min-width:0;border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);box-shadow:var(--shadow-sm)}.program-panel{container-type:inline-size;border-top-left-radius:0;transition:border-color .14s ease,box-shadow .14s ease,background .14s ease}.program-panel--library-drag{border-color:var(--color-brand);background:#f8fcfa;box-shadow:0 0 0 4px #12643f24}.builder-panel__header{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--space-4);border-bottom:1px solid var(--color-border);padding:var(--space-5)}.program-panel__header-actions{display:flex;align-items:center;gap:var(--space-2)}.tab-actions{position:relative}.tab-actions__trigger{min-height:2.15rem;padding:.35rem .65rem;font-size:.75rem}.builder-panel__header h2,.program-exercise-card h3,.library-card h3,.empty-program h3,.exercise-modal h2{margin:0;letter-spacing:-.025em}.builder-panel__header h2{font-size:1.25rem}.panel-kicker{margin:0 0 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