:root {
  --bg: #f6f7f9; --card: #fff; --text: #1d2330; --muted: #6b7280; --line: #e5e7eb;
  --primary: #2563eb; --primary-ink: #fff; --danger: #dc2626; --today: #fff7d6;
  --sat: #2563eb; --sun: #dc2626; --me: #dbeafe; --other: #f1f5f9;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "Segoe UI", sans-serif; }
a { color: var(--primary); }
h1 { font-size: 1.4rem; margin: 0; }
h2 { font-size: 1rem; margin: 0 0 .5rem; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.error { color: var(--danger); margin: .5rem 0; }

.btn { display: inline-flex; align-items: center; gap: .5rem; padding: .55rem 1rem; border-radius: 8px;
  border: 1px solid var(--line); background: var(--card); color: var(--text); text-decoration: none;
  font-size: .95rem; cursor: pointer; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.btn-danger { background: #fff; border-color: var(--danger); color: var(--danger); }
.btn-ghost { background: transparent; }
.btn-google { justify-content: center; width: 100%; font-weight: 600; }

.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 2rem; max-width: 380px; width: 100%; text-align: center; }
.login-card h1 { margin-bottom: .5rem; }
.login-card .btn { margin-top: 1rem; }

.topbar { display: flex; align-items: center; justify-content: space-between; padding: .7rem 16px;
  background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.brand { font-weight: 700; }
.me { display: flex; align-items: center; gap: .6rem; font-size: .9rem; }
.avatar { width: 28px; height: 28px; border-radius: 50%; object-fit: cover; }
.avatar-fallback { display: inline-grid; place-items: center; background: var(--primary); color: #fff; font-size: .8rem; }
.me-name { max-width: 10rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.link { font-size: .85rem; }

.container { max-width: 1100px; margin: 0 auto; padding: 16px; }
.today-box { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: .9rem 1rem; margin-bottom: 1rem; }
.chips { display: flex; flex-wrap: wrap; gap: .4rem; }
.chip { display: inline-flex; align-items: center; gap: .35rem; padding: .25rem .6rem; border-radius: 999px;
  background: var(--other); font-size: .85rem; }
.chip img, .chip .avatar-fallback { width: 20px; height: 20px; font-size: .7rem; }
.chip.me { background: var(--me); }
.chip .time { color: var(--muted); }

.cal-head { display: flex; align-items: center; justify-content: space-between; margin: .5rem 0 .25rem; }
.hint { margin: 0 0 .6rem; font-size: .85rem; }

.weekdays { display: grid; grid-template-columns: repeat(7, 1fr); text-align: center; font-size: .8rem; color: var(--muted); padding-bottom: .25rem; }
.weekdays .sat { color: var(--sat); } .weekdays .sun { color: var(--sun); }
.grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }
.day { background: var(--card); border: 1px solid var(--line); border-radius: 8px; min-height: 92px; padding: .35rem;
  cursor: pointer; display: flex; flex-direction: column; gap: .25rem; transition: box-shadow .1s; }
.day:hover { box-shadow: 0 0 0 2px var(--primary); }
.day.empty { background: transparent; border-color: transparent; cursor: default; }
.day.empty:hover { box-shadow: none; }
.day.today { background: var(--today); }
.day.past { opacity: .6; }
.day .num { font-size: .85rem; font-weight: 600; }
.day.sat .num { color: var(--sat); } .day.sun .num { color: var(--sun); }
.day .people { display: flex; flex-direction: column; gap: 2px; }
.person { font-size: .74rem; line-height: 1.25; padding: 1px 5px; border-radius: 4px; background: var(--other);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.person.me { background: var(--me); font-weight: 600; }
.person .t { color: var(--muted); }
.day .more { font-size: .7rem; color: var(--muted); }

.members { margin-top: 1.5rem; }

.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.4); display: grid; place-items: center; padding: 16px; z-index: 10; }
.modal { background: var(--card); border-radius: 14px; padding: 1.2rem; width: 100%; max-width: 440px; }
.modal h3 { margin: 0 0 .5rem; }
.modal label { display: block; font-size: .85rem; color: var(--muted); margin: .7rem 0; }
.modal input[type=text], .modal input[type=time] { width: 100%; padding: .5rem .6rem; border: 1px solid var(--line); border-radius: 8px; font-size: 1rem; margin-top: .25rem; }
.time-row { display: flex; align-items: center; gap: .5rem; }
.time-row input { flex: 1; }
.modal-actions { display: flex; gap: .5rem; align-items: center; margin-top: 1rem; }
.spacer { flex: 1; }
.others { margin: .3rem 0 .6rem; }
.others .chip { margin: 2px 2px 2px 0; }

@media (max-width: 640px) {
  .day { min-height: 64px; padding: .25rem; }
  .person { font-size: .66rem; padding: 0 3px; }
  .person .t { display: none; }
  .me-name { display: none; }
  .cal-head .btn { padding: .4rem .6rem; }
  h1 { font-size: 1.15rem; }
}

/* labs / absence */
.container.narrow { max-width: 560px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 1rem 1.1rem; margin: 1rem 0; }
.card label { display: block; font-size: .85rem; color: var(--muted); margin: .5rem 0; }
.card input[type=text] { width: 100%; padding: .5rem .6rem; border: 1px solid var(--line); border-radius: 8px; font-size: 1rem; margin-top: .25rem; }
.lab-list { display: flex; flex-direction: column; gap: .4rem; }
.lab-item { display: flex; align-items: center; gap: .6rem; padding: .55rem .7rem; border: 1px solid var(--line); border-radius: 8px; cursor: pointer; color: var(--text); font-size: 1rem; margin: 0; }
.lab-item.current { background: var(--me); }
.lab-item .lab-name { flex: 1; }
.lab-badge { font-weight: 400; font-size: .85rem; color: var(--muted); margin-left: .5rem; }
.lab-badge a { font-size: .8rem; margin-left: .25rem; }
.seg { display: flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; margin: .5rem 0; }
.seg-item { flex: 1; text-align: center; padding: .5rem; cursor: pointer; margin: 0 !important; color: var(--text) !important; font-size: 1rem !important; }
.seg-item:has(input:checked) { background: var(--primary); color: #fff !important; }
.seg-item:has(input[value=absent]:checked) { background: var(--danger); }
.seg-item input { position: absolute; opacity: 0; width: 0; height: 0; }
.tag { display: inline-block; font-size: .72rem; padding: .1rem .45rem; border-radius: 4px; margin-right: .4rem; white-space: nowrap; }
.tag-present { background: var(--me); color: #1e40af; }
.tag-absent { background: #fee2e2; color: #991b1b; }
.today-row { display: flex; align-items: flex-start; gap: .3rem; margin-top: .4rem; }
.today-row .chips { flex: 1; }
.person.absent { background: #fee2e2; color: #991b1b; text-decoration: line-through; }
.person.absent.me { font-weight: 600; }
.chip.absent { background: #fee2e2; color: #991b1b; }
.chip.absent.me { outline: 2px solid #fca5a5; }

/* admin */
.chip-wrap { display: inline-flex; align-items: center; gap: .15rem; margin: 2px 2px 2px 0; }
.chip-wrap .chip { margin: 0; }
.chip-x { border: none; background: transparent; color: var(--danger); cursor: pointer; font-size: 1rem; line-height: 1; padding: 0 .2rem; }
.admin-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.admin-table th, .admin-table td { text-align: left; padding: .45rem .4rem; border-bottom: 1px solid var(--line); vertical-align: middle; }
.admin-table form { display: inline-flex; gap: .3rem; align-items: center; margin: 0; }
.admin-table input[type=text], .admin-table select { padding: .3rem .4rem; border: 1px solid var(--line); border-radius: 6px; font-size: .9rem; }
.btn-sm { padding: .3rem .6rem; font-size: .85rem; }
.notice { background: #ecfdf5; border: 1px solid #a7f3d0; color: #065f46; padding: .5rem .8rem; border-radius: 8px; margin: .5rem 0; }
@media (max-width: 640px) { .admin-table th:nth-child(3), .admin-table td:nth-child(3) { display: none; } }

.settings-form label { display: block; font-size: .85rem; color: var(--muted); margin: .6rem 0; }
.settings-form input[type=text], .settings-form select { display: block; width: 100%; padding: .5rem .6rem; border: 1px solid var(--line); border-radius: 8px; font-size: 1rem; margin-top: .25rem; color: var(--text); background: var(--card); }
.settings-form label.check { display: flex; align-items: center; gap: .5rem; color: var(--text); font-size: .95rem; }
.settings-form .small { display: block; margin-top: .2rem; }

/* lab events */
.event { font-size: .72rem; line-height: 1.25; padding: 1px 5px; border-radius: 4px; background: #fef3c7; color: #92400e;
  border-left: 3px solid #f59e0b; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 600; }
.event .t { color: #b45309; font-weight: 400; }
.tag-event { background: #fef3c7; color: #92400e; }
.chip.event { background: #fef3c7; color: #92400e; }
.tabs { display: flex; gap: .25rem; border-bottom: 1px solid var(--line); margin: .25rem 0 .6rem; }
.tab { border: none; background: transparent; padding: .45rem .8rem; cursor: pointer; font-size: .95rem; color: var(--muted);
  border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.events { display: flex; flex-direction: column; gap: .3rem; margin-bottom: .5rem; }
.event-row { display: flex; align-items: center; gap: .5rem; padding: .4rem .6rem; border-radius: 8px; background: #fffbeb; border: 1px solid #fde68a; font-size: .9rem; }
.event-row .ev-main { flex: 1; min-width: 0; }
.event-row .ev-title { font-weight: 600; color: #92400e; }
.event-row .ev-sub { color: var(--muted); font-size: .8rem; }
.event-row .chip-x { flex: none; }
@media (max-width: 640px) { .event { font-size: .66rem; padding: 0 3px; } .event .t { display: none; } }

.modal select { padding: .5rem .6rem; border: 1px solid var(--line); border-radius: 8px; font-size: 1rem; margin-top: .25rem; background: var(--card); color: var(--text); }
.modal input[type=date] { padding: .45rem .5rem; border: 1px solid var(--line); border-radius: 8px; font-size: .95rem; }
.rep { font-size: .7rem; color: var(--muted); font-weight: 400; margin-left: .2rem; }
.ev-actions { display: flex; flex-direction: column; gap: .1rem; align-items: flex-end; }
.ev-actions .mini { border: none; background: transparent; color: var(--danger); cursor: pointer; font-size: .75rem; padding: .1rem .3rem; white-space: nowrap; }
.modal-actions { flex-wrap: wrap; }
@media (max-width: 640px) { .modal-actions .btn { padding: .45rem .6rem; font-size: .85rem; } }