:root {
  --bg: #f4f7f6; --card: #fff; --ink: #1d2b2a; --muted: #62736f; --line: #dbe4e1;
  --brand: #1f6f68; --brand-ink: #fff; --brand-soft: #e3f1ee;
  --pos: #23794a; --neg: #b3402e; --warn-bg: #fff4dc; --warn-ink: #7a5300;
  --absence: #eef0fb; --absence-ink: #3b4a9a; --holiday: #f6eefa;
  --radius: 10px; --shadow: 0 1px 2px rgba(0,0,0,.05), 0 2px 8px rgba(0,0,0,.04);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111817; --card: #1a2322; --ink: #e5eeec; --muted: #94a7a2; --line: #2b3836;
    --brand: #4fb3a8; --brand-ink: #062320; --brand-soft: #1d3532;
    --pos: #5fcf8e; --neg: #f08a76; --warn-bg: #3a2f14; --warn-ink: #f3d38a;
    --absence: #222a45; --absence-ink: #aab6f5; --holiday: #2e2236;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
button, input, select, textarea { font: inherit; color: inherit; }
h1 { font-size: 1.35rem; margin: 0 0 1rem; }
h2 { font-size: 1.05rem; margin: 0 0 .75rem; }
.muted { color: var(--muted); }
.center { text-align: center; }
.pos { color: var(--pos); } .neg { color: var(--neg); }
.num { font-variant-numeric: tabular-nums; white-space: nowrap; }

#banner { background: var(--warn-bg); color: var(--warn-ink); text-align: center; padding: .4rem 16px; font-size: .9rem; }
#banner[hidden] { display: none; }
header { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; padding: .6rem 16px; background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.brand { display: flex; align-items: center; gap: .55rem; font-weight: 600; }
.mark { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 8px; background: var(--brand); color: var(--brand-ink); font-weight: 700; }
nav { display: flex; gap: .25rem; flex-wrap: wrap; flex: 1; }
nav a { padding: .4rem .7rem; border-radius: 8px; color: var(--muted); text-decoration: none; }
nav a.on { background: var(--brand-soft); color: var(--brand); font-weight: 600; }
.who { display: flex; gap: .75rem; }
.link { background: none; border: 0; padding: 0; color: var(--brand); cursor: pointer; }
.link:hover { text-decoration: underline; }

main { max-width: 1060px; margin: 0 auto; padding: 1.25rem 16px 3rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.1rem; margin-bottom: 1rem; }
.narrow { max-width: 400px; margin: 8vh auto 0; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); margin-bottom: 1rem; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: .8rem 1rem; }
.stat b { display: block; font-size: 1.45rem; font-variant-numeric: tabular-nums; }
.stat span { color: var(--muted); font-size: .85rem; }
.row { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }

main a { color: var(--brand); }
a.btn { color: var(--ink); }
.btn { border: 1px solid var(--line); background: var(--card); padding: .5rem .9rem; border-radius: 8px; cursor: pointer; text-decoration: none; display: inline-block; }
.btn:hover { border-color: var(--brand); }
.btn.primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); font-weight: 600; }
.btn.danger { color: var(--neg); }
.btn:disabled { opacity: .5; cursor: default; }

.clock { text-align: center; padding: 1.75rem 1rem; }
.clock .time { font-size: 3.2rem; font-weight: 600; font-variant-numeric: tabular-nums; letter-spacing: -.02em; }
.clock .status { color: var(--muted); margin: .25rem 0 1.25rem; }
.stamp { font-size: 1.25rem; padding: 1rem 2.8rem; border-radius: 999px; border: 0; cursor: pointer; font-weight: 600; background: var(--brand); color: var(--brand-ink); min-width: 220px; }
.stamp.out { background: var(--neg); color: #fff; }
.stamp:disabled { opacity: .6; }
.check { display: inline-flex; gap: .4rem; align-items: center; margin-top: 1rem; color: var(--muted); font-size: .9rem; }
.check input { width: auto; display: inline; margin: 0; }

.warn { background: var(--warn-bg); color: var(--warn-ink); padding: .7rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; }

label { display: block; margin-bottom: .8rem; font-size: .9rem; color: var(--muted); }
label input, label select, label textarea { color: var(--ink); display: block; width: 100%; margin-top: .25rem; padding: .55rem .65rem; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); }
label input:focus, label select:focus, label textarea:focus { outline: 2px solid var(--brand); outline-offset: -1px; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.days { display: flex; gap: .3rem; margin-top: .3rem; }
.days label { margin: 0; display: flex; align-items: center; gap: .2rem; color: var(--ink); }
.days input { width: auto; display: inline; margin: 0; }
.error { color: var(--neg); min-height: 1.2em; margin: .3rem 0 .6rem; font-size: .9rem; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .5rem .55rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: .8rem; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
td.r, th.r { text-align: right; }
tr.weekend td { color: var(--muted); background: color-mix(in srgb, var(--bg) 60%, transparent); }
tr.holiday td { background: var(--holiday); }
tr.today td:first-child { box-shadow: inset 3px 0 var(--brand); }
tr.click { cursor: pointer; } tr.click:hover td { background: var(--brand-soft); }
.chip { display: inline-block; padding: .1rem .5rem; margin: 0 .3rem .25rem 0; border-radius: 6px; background: var(--brand-soft); color: var(--ink); border: 0; cursor: pointer; font-size: .88rem; font-variant-numeric: tabular-nums; }
.chip.abs { background: var(--absence); color: var(--absence-ink); }
.chip.open { background: var(--warn-bg); color: var(--warn-ink); }
.chip[disabled] { cursor: default; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--pos); margin-right: .35rem; }
.tag { font-size: .75rem; padding: .05rem .4rem; border-radius: 4px; background: var(--brand-soft); color: var(--brand); margin-left: .3rem; }
.tag.off { background: var(--line); color: var(--muted); }

dialog { border: 1px solid var(--line); border-radius: 14px; padding: 0; width: min(440px, calc(100vw - 32px)); background: var(--card); color: var(--ink); box-shadow: 0 10px 40px rgba(0,0,0,.25); }
dialog::backdrop { background: rgba(10,20,20,.45); }
dialog form { padding: 1.2rem; }
dialog .actions { display: flex; gap: .5rem; justify-content: flex-end; margin-top: .5rem; }
dialog .actions .left { margin-right: auto; }

#toast { position: fixed; left: 50%; bottom: 1.5rem; transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: .6rem 1rem; border-radius: 8px; opacity: 0; pointer-events: none; transition: opacity .2s; max-width: calc(100vw - 32px); }
#toast.show { opacity: 1; }

@media (max-width: 640px) {
  header { gap: .5rem; }
  nav { order: 3; flex-basis: 100%; overflow-x: auto; flex-wrap: nowrap; }
  .who { margin-left: auto; }
  .clock .time { font-size: 2.6rem; }
  .hide-sm { display: none; }
  .two { grid-template-columns: 1fr; }
}
.print-only { display: none; }
@media print {
  .print-only { display: block; }
  header, .no-print, #toast { display: none !important; }
  body { background: #fff; color: #000; }
  .card, .stat { box-shadow: none; border-color: #ccc; }
}