/* Adapted from accepted PR #317 hub.css: topbar, upnext, dense response rows, mini, dayplan,
   sheet and notification tray. App data and command handlers remain authoritative. */
:root { --topbar-height: 64px; }
.app-shell { grid-template-rows: 64px auto; }
.app-shell > main { grid-row: 2; }
.app-rail { grid-row: 1 / span 2; }
.app-topbar { grid-column: 2; grid-row: 1; display: flex; position: sticky; top: 0; z-index: 30; align-items: center; gap: 12px; padding: 10px 28px; min-width: 0; min-height: 64px; border-bottom: 1px solid var(--line); background: var(--bg); }
.app-topbar > .brand { display: none; }
.topbar-context { color: var(--ink-3); font-size: .875rem; font-weight: 600; }
.topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.hub-icon-button { position: relative; display: inline-grid; place-items: center; width: 44px; height: 44px; flex: none; padding: 0; background: transparent; border: 1px solid transparent; border-radius: 12px; color: var(--ink-2); }
.hub-icon-button:hover { background: var(--surface-2); }
.hub-avatar { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: var(--surface-3); font-size: .8rem; font-weight: 700; color: var(--ink-2); text-decoration: none; }
.notification-dot { position: absolute; right: 9px; top: 9px; width: 9px; height: 9px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 2px var(--bg); }
.notification-dot[hidden] { display: none; }
.hub-page { --shell-max: 1760px; padding-top: 28px; padding-bottom: 64px; }
.hub-heading h1 { font-size: 2.125rem; font-weight: 750; line-height: 1.1; letter-spacing: -.02em; }
.hub-heading .muted { font-size: .875rem; }
.hub-layout { grid-template-columns: minmax(0, 1fr) 340px; gap: 32px; }
.hub-main { gap: 28px; }
.hub-heading { margin-bottom: 0; }
.hub-main > .hub-glance { margin-bottom: 0; }
.hub-scope-form { display: flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 999px; padding: 0 12px; background: var(--surface); min-width: 0; }
.hub-scope-form select { min-height: 40px; width: auto; max-width: 210px; padding: 4px; margin: 0; background: transparent; color: var(--ink); border: 0; font-weight: 600; font-size: .875rem; }
.hub-scope-form .text-button { font-size: .8125rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.rail-management-toggle { display: none; }
.calendar-page-head .calendar-panel__heading { min-width: 0; grid-template-columns: 2.25rem minmax(0, 1fr) 2.25rem auto; border: 0; padding: 0; justify-content: start; background: transparent; }
.calendar-page-head .calendar-panel__heading h2 { font-size: 1.5rem; }
.hub-aside { gap: 20px; }
.hub-next { grid-template-columns: 112px minmax(0, 1fr); }
.hub-next__body { padding: 22px 24px; }
.hub-next__date { padding: 20px 8px; gap: 2px; }
.hub-next__date strong { font-size: 3rem; }
.hub-next--pool .pool-summary-card { display: flex; flex-direction: column; align-items: stretch; gap: 14px; }
.hub-next--pool .personal-event-card__when { display: block; color: var(--ink-2); font-size: .9rem; }
.hub-next--pool .personal-event-card__main h3 { font-size: 1.75rem; line-height: 1.15; margin: 0; }
.hub-next--pool .personal-event-card__main p { margin: 6px 0 0; font-size: .875rem; }
.hub-next--pool .attendance-control { max-width: 420px; }
.hub-responses { margin-top: 28px; }
.hub-list-more { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 0; font-size: .8125rem; color: var(--ink-3); }
.hub-list-more[hidden], .hub-responses .personal-event-card[hidden] { display: none; }
.personal-event-card__main h3 a { color: var(--ink); text-decoration: none; }
.personal-event-card__main h3 a:hover { text-decoration: underline; }
.hub-responses .personal-event-list { gap: 0; }
.hub-responses .personal-event-card { grid-template-columns: 108px minmax(0, 1fr) minmax(205px, .85fr); padding: 14px 0; gap: 16px; }
.hub-responses .personal-event-card__when { font-size: .8125rem; line-height: 1.5; }
.hub-responses .personal-event-card__main h3 { font-size: .9375rem; margin: 0 0 5px; }
.hub-responses .personal-event-card__main p { font-size: .8125rem; margin: 0; }
.attendance-answer { gap: 2px; padding: 3px; border: 1px solid var(--line-strong); border-radius: 10px; background: var(--surface-2); }
.attendance-button { background: transparent; border: 1px solid transparent; color: var(--ink-2); border-radius: 7px; font-size: .875rem; min-height: 36px; }
.attendance-button--yes.is-active { background: var(--going-soft); color: var(--going); border-color: var(--going); }
.attendance-button--maybe.is-active { background: var(--warn-soft); color: var(--warn); border-color: var(--warn); }
.attendance-button--no.is-active { background: var(--surface-3); color: var(--ink); border-color: var(--line-strong); }
.attendance-button--clear { font-size: .8125rem; }
.hub-aside-card { padding: 18px; }
.hub-aside-card h2 { font-size: 1.0625rem; }
.hub-coming-up h2 { font-size: 1.25rem; }
.home-agenda li { grid-template-columns: 64px minmax(0, 1fr); padding: 12px 0; font-size: .875rem; }
.home-agenda p { font-size: .8125rem; }
.mini-context { font-size: .75rem; margin: 6px 0 10px; }
.mini-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 2px; text-align: center; }
.mini-dow { font-size: .6875rem; font-weight: 700; color: var(--ink-3); padding: 4px 0; }
.mini-day { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 38px; gap: 4px; border-radius: 8px; color: var(--ink); text-decoration: none; font-size: .8125rem; }
.mini-day:hover { background: var(--surface-2); }
.mini-day--out { color: var(--ink-3); opacity: .6; }
.mini-day--today { background: var(--ink); color: var(--bg); }
.mini-dots { display: flex; gap: 2px; height: 5px; }
.mini-dots i { width: 5px; height: 5px; border-radius: 50%; background: currentColor; opacity: .75; }
.mini-dots .mini-dot--personal { background: transparent; border: 1px solid currentColor; }
.calendar-page-head { margin-bottom: 20px; }
.calendar-page-head h1 { font-size: 2.125rem; }
.calendar-kind-nav { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.calendar-kind-nav a { display: inline-flex; align-items: center; min-height: 36px; padding: 4px 12px; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-2); text-decoration: none; font-size: .8125rem; }
.calendar-kind-nav a[aria-current] { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.month-agenda { padding: 0 18px; }
.month-agenda-day { padding: 16px 0; border-bottom: 1px solid var(--line); }
.month-agenda-day h3 { font-size: .875rem; color: var(--ink-3); }
.month-agenda-day a { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; min-height: 44px; padding: 6px 0; color: var(--ink); text-decoration: none; font-size: .875rem; }
.month-agenda-day time { min-width: 5rem; color: var(--ink-3); }
.month-agenda-day a span { margin-left: auto; font-size: .75rem; color: var(--accent); }
.my-calendar { grid-template-columns: minmax(0, 1fr) 320px; gap: 24px; }
.my-calendar .calendar-day { min-height: 120px; padding: 6px; }
.my-calendar .calendar-panel { background: var(--surface); }
.my-calendar .calendar-weekdays, .my-calendar .calendar-panel__heading { background: var(--surface); }
.my-calendar .calendar-weekdays { color: var(--ink-3); font-size: .75rem; border-bottom: 1px solid var(--line); }
.my-calendar .calendar-day__number { min-height: 28px; min-width: 28px; font-size: .8125rem; }
.my-calendar .calendar-item { border-radius: 5px; border: 0; border-left: 3px solid var(--accent); background: var(--accent-soft); font-size: .6875rem; padding: 4px 6px; min-height: 26px; }
.my-calendar .calendar-item--external { background: var(--surface-2); border-left-style: dotted; border-left-color: var(--ink-3); }
.my-calendar .calendar-day-detail { position: sticky; top: 84px; padding: 18px; background: var(--surface); }
.my-calendar .calendar-day-detail__heading { padding: 0 0 12px; border: 0; }
.my-calendar .calendar-day-detail__heading h2 { font-size: 1.125rem; }
.my-calendar .calendar-day-detail__list { padding: 0; }
.my-calendar .calendar-detail-panel { border: 0; border-top: 1px solid var(--line); border-radius: 0; padding: 14px 0; background: transparent; }
.my-calendar .calendar-detail-panel h3 { line-height: 1.3; margin: 0 0 6px; }
.my-calendar .my-calendar-event-time, .my-calendar .calendar-detail-panel .muted { font-size: .8125rem; margin: 6px 0; }
.text-button { min-height: 36px; background: transparent; color: var(--accent); padding: 6px 0; font-size: .875rem; text-align: left; }
.event-sheet { position: fixed; inset: 0 0 0 auto; width: min(460px, 100%); max-width: 100%; height: 100dvh; max-height: 100dvh; margin: 0; padding: 24px; background: var(--surface); color: var(--ink); border: 0; border-left: 1px solid var(--line); overflow: auto; }
.event-sheet::backdrop { background: #0c0c1266; }
.event-sheet .calendar-detail-panel { padding: 0; border: 0; }
.event-sheet .calendar-detail-panel h3 { font-size: 1.625rem; margin: 20px 0; }
.event-sheet-close { display: block; margin: 0 0 24px auto; background: var(--surface-2); color: var(--ink); }
.event-sheet .event-details-button { display: none; }
.notification-tray { position: fixed; right: 24px; top: 76px; width: min(416px, calc(100vw - 32px)); max-height: min(544px, calc(100dvh - 100px)); background: var(--surface); color: var(--ink); border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 24px 60px #0008; display: flex; flex-direction: column; z-index: 45; }
.notification-tray[hidden], .tray-scrim[hidden] { display: none; }
.tray-head { display: flex; align-items: center; gap: 10px; padding: 12px 12px 8px 18px; }
.tray-head h2 { font-size: 1.125rem; margin: 0; }
.tray-head .muted { font-size: .8125rem; }
.tray-head .hub-icon-button { margin-left: auto; }
.tray-tools { padding: 0 18px 12px; border-bottom: 1px solid var(--line); }
.hub-segment { display: inline-flex; padding: 3px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--line); }
.hub-segment button { min-height: 34px; background: transparent; color: var(--ink-2); font-size: .8125rem; }
.hub-segment button[aria-pressed="true"] { background: var(--surface); color: var(--ink); }
.tray-list { overflow: auto; padding: 0 18px; min-height: 100px; }
.tray-foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; padding: 14px 18px; border-top: 1px solid var(--line); font-size: .8125rem; }
.inbox-item { border-bottom: 1px solid var(--line); padding: 12px 0; }
.inbox-item summary { display: flex; gap: 8px; cursor: pointer; min-height: 44px; align-items: center; font-size: .875rem; line-height: 1.4; }
.inbox-item summary strong { flex: 1; }
.inbox-read-state { color: var(--ink-3); font-size: .75rem; }
.inbox-item--unread summary::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex: none; }
.inbox-item p { font-size: .8125rem; overflow-wrap: anywhere; }
.inbox-meta { color: var(--ink-3); }
.inbox-feedback { color: var(--ink-3); }
.inbox-feedback[role="alert"] { color: var(--danger); }
.inbox-feedback:empty { display: none; }
.inbox-state { font-size: .875rem; color: var(--ink-3); padding: 16px 0; }
.tray-scrim { position: fixed; inset: 0; background: #0c0c1270; z-index: 40; }
@media (min-width: 720px) and (max-width: 1099px) {
    :root { --rail-width: 88px; }
    .app-rail { padding: 16px 6px; }
    .app-rail .brand__text, .app-rail .rail__pool-name, .app-rail .rail__label, .app-rail .nav-link > span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
    .app-rail > .brand, .app-rail .nav-link, .rail__pool-link { justify-content: center; }
    .rail-management-toggle { display: grid; margin: 12px auto; }
    .rail-management { display: none; position: fixed; left: 88px; top: 76px; z-index: 40; width: 280px; max-height: calc(100dvh - 96px); overflow: auto; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px; box-shadow: 0 16px 40px #0008; }
    .rail-management.is-open { display: block; }
    .app-rail .rail-management .rail__label { position: static; width: auto; height: auto; clip-path: none; }
    .app-rail .nav-menu > summary { font-size: .875rem; padding: 12px; }
    .app-rail .nav-menu__panel { position: static; padding: 0 12px; margin: 0; width: auto; box-shadow: none; }
    .app-rail .nav-menu__panel .nav-link { justify-content: start; }
    .app-rail .rail__foot .link-button { font-size: 0; }
    .app-rail .rail__foot .link-button::before { content: '↪'; font-size: 1.5rem; }
    .hub-layout, .my-calendar { grid-template-columns: minmax(0, 1fr); }
    .hub-aside { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .my-calendar .calendar-day-detail { position: static; }
    .my-calendar .calendar-day { min-height: 100px; }
    .hub-responses .personal-event-card { grid-template-columns: 90px minmax(0, 1fr) 210px; }
}
@media (max-width: 719px) {
    :root { --topbar-height: 56px; }
    .app-topbar { padding: 0 16px; min-height: 56px; }
    .app-topbar > .brand { display: inline-flex; font-size: 1rem; }
    .topbar-context { display: none; }
    .hub-scope-form { position: absolute; top: calc(100% + 8px); left: 16px; max-width: calc(100vw - 32px); }
    .app-shell:has(.hub-scope-form) .hub-page { padding-top: 72px; }
    .topbar-actions { gap: 4px; }
    .hub-avatar { width: 30px; height: 30px; font-size: .6875rem; }
    .hub-page { padding-top: 20px; padding-bottom: 32px; }
    .hub-heading h1 { font-size: 1.75rem; }
    .calendar-page-head .calendar-panel__heading { grid-template-columns: 2rem minmax(0, 1fr) 2rem auto; gap: 4px; }
    .calendar-page-head .calendar-panel__heading h2 { font-size: 1.125rem; }
    .hub-layout, .my-calendar { grid-template-columns: minmax(0, 1fr); gap: 24px; }
    .hub-aside { grid-template-columns: minmax(0, 1fr); }
    .mini-calendar { display: none; }
    .hub-next { grid-template-columns: minmax(0, 1fr); }
    .hub-next__date { display: none; }
    .hub-next__body { padding: 18px; }
    .hub-next--pool .personal-event-card__main h3 { font-size: 1.5rem; }
    .hub-responses .personal-event-card { grid-template-columns: minmax(0, 1fr); gap: 6px; padding: 14px 0; }
    .hub-responses .attendance-control { margin-top: 6px; }
    .attendance-button { min-height: 40px; }
    .my-calendar .calendar-day { min-height: 48px; height: 48px; padding: 2px; }
    .my-calendar .calendar-day-detail { position: static; padding: 16px; }
    .notification-tray { left: 0; right: 0; top: auto; bottom: 0; width: 100%; max-height: 85dvh; border-radius: 18px 18px 0 0; padding-bottom: env(safe-area-inset-bottom, 0px); }
    html.inbox-open { overflow: hidden; }
    .event-sheet { inset: auto 0 0; width: 100%; height: auto; max-height: 90dvh; border-radius: 18px 18px 0 0; padding: 20px; }
}