:root {
  --bg: #F5F7FB; --surface: #FFFFFF; --surface-muted: #EEF2F8; --border: rgba(15,23,42,.08); --border-strong: rgba(15,23,42,.16);
  --primary: #2563EB; --primary-soft: rgba(37,99,235,.10); --text: #0F172A; --text-2: #64748B; --text-3: #94A3B8;
  --danger: #DC2626; --danger-soft: rgba(220,38,38,.10); --success: #16A34A; --shadow: 0 8px 24px rgba(30,41,59,.07);
  --morning: #FACC15; --afternoon: #38BDF8; --night: #A855F7; --off: #22C55E; --vacation: #14B8A6; --sick: #EF4444;
  --r: 18px; --r-sm: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0B1220; --surface: #111C2E; --surface-muted: #0E172A; --border: rgba(148,163,184,.12); --border-strong: rgba(148,163,184,.26);
    --primary: #3B82F6; --primary-soft: rgba(59,130,246,.16); --text: #F8FAFC; --text-2: #94A3B8; --text-3: #64748B;
    --danger: #EF4444; --danger-soft: rgba(239,68,68,.14); --success: #22C55E; --shadow: 0 10px 28px rgba(0,0,0,.4);
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.5 -apple-system, Inter, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased; }
h1, h2, h3 { margin: 0; letter-spacing: -.02em; }
h1 { font-size: 20px; font-weight: 800; } h2 { font-size: 22px; font-weight: 800; } h3 { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--text-2); margin: 18px 0 10px; }
a { color: var(--primary); }
.muted { color: var(--text-2); } .small { font-size: 13px; } .hidden { display: none !important; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r); box-shadow: var(--shadow); padding: 20px; }
.btn { appearance: none; border: 0; border-radius: 12px; padding: 11px 18px; font: inherit; font-weight: 600; cursor: pointer; transition: transform .08s, opacity .15s; color: var(--text); background: var(--surface-muted); }
.btn:active { transform: scale(.985); } .btn:disabled { opacity: .5; cursor: default; }
.btn-primary { background: var(--primary); color: #fff; } .btn-soft { background: var(--primary-soft); color: var(--primary); }
.btn-danger { background: var(--danger-soft); color: var(--danger); } .btn-ghost { background: transparent; color: var(--primary); }
.btn-sm { padding: 7px 12px; font-size: 13px; border-radius: 10px; }
.icon-btn { width: 40px; height: 40px; border-radius: 12px; border: 0; background: var(--surface-muted); color: var(--primary); font-size: 22px; font-weight: 700; cursor: pointer; }
.pill { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 700; background: var(--surface-muted); }
.field { display: flex; flex-direction: column; gap: 6px; margin: 12px 0; font-size: 13px; font-weight: 600; color: var(--text-2); }
.field input, .field textarea, .times input { font: inherit; color: var(--text); background: var(--surface-muted); border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; outline: none; width: 100%; }
.field input:focus, .field textarea:focus, .times input:focus { border-color: var(--primary); }
.error { color: var(--danger); font-size: 13px; margin: 6px 0; }

/* login */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: 100%; max-width: 400px; text-align: center; padding: 32px 28px; }
.login-card h1 { font-size: 26px; margin-top: 12px; } .login-card .field { text-align: left; }
.login-logo { border-radius: 18px; } .login-card .btn-primary { width: 100%; margin-top: 8px; padding: 13px; }
.check { display: flex; align-items: center; gap: 8px; font-size: 14px; margin: 4px 0 8px; } .links a { color: var(--text-3); }

/* app shell */
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px clamp(16px, 3vw, 32px); flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 12px; } .brand img { border-radius: 10px; } .brand div { display: flex; flex-direction: column; line-height: 1.2; }
.month-nav { display: flex; align-items: center; gap: 8px; } .month-nav h1 { min-width: 170px; text-align: center; }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 20px; padding: 0 clamp(16px, 3vw, 32px) 40px; max-width: 1400px; margin: 0 auto; }
.side { display: flex; flex-direction: column; gap: 20px; }
@media (max-width: 960px) { .layout { grid-template-columns: 1fr; } .month-nav h1 { min-width: 0; } }

/* stats */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin-bottom: 16px; }
.stat { background: var(--surface-muted); border-radius: var(--r-sm); padding: 10px 12px; }
.stat b { display: block; font-size: 22px; font-variant-numeric: tabular-nums; } .stat span { font-size: 12px; color: var(--text-2); }
@media (max-width: 560px) {
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid, .weekdays { gap: 3px; }
  .day { min-height: 58px; padding: 6px 2px; border-radius: 10px; }
  .day .lbl, .day .tm { display: none; }
  .day[style*="--c"]::after { content: ""; width: 60%; height: 4px; border-radius: 2px; background: var(--c); margin-top: 6px; }
  .month-nav h1 { font-size: 20px; }
  .calendar-card { padding: 12px; }
}

/* grid */
.weekdays { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 4px; margin-bottom: 4px; }
.weekdays div { text-align: center; font-size: 11px; font-weight: 700; letter-spacing: .06em; color: var(--text-3); padding: 4px 0; }
.grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 4px; }
.day { appearance: none; border: 2px solid transparent; border-radius: 12px; background: var(--surface-muted); min-height: 76px; padding: 8px 6px; text-align: center; cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 2px; font: inherit; color: var(--text); position: relative; transition: transform .08s; }
.day:hover { transform: translateY(-1px); } .day:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.day.outside { opacity: .45; } .day.selected { border-color: var(--primary); } .day.today .num { background: var(--primary); color: #fff; }
.day .num { width: 24px; height: 24px; border-radius: 12px; display: grid; place-items: center; font-weight: 700; font-size: 14px; font-variant-numeric: tabular-nums; }
.day .lbl { font-size: 12px; font-weight: 700; color: var(--lbl, var(--c)); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }
.day .tm { font-size: 10px; color: var(--text-2); font-variant-numeric: tabular-nums; }
.day .marks { position: absolute; top: 6px; right: 6px; display: flex; gap: 3px; } .day .marks i { width: 5px; height: 5px; border-radius: 3px; display: block; }
.day.weekend .num { color: var(--text-2); } .day.today.weekend .num { color: #fff; }
.legend { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 14px; font-size: 12px; color: var(--text-2); }
.legend span::before { content: ""; display: inline-block; width: 9px; height: 9px; border-radius: 5px; margin-right: 6px; background: var(--c); vertical-align: 1px; }
.exports { display: flex; align-items: center; gap: 8px; margin-top: 16px; flex-wrap: wrap; }
.empty { text-align: center; padding: 32px 16px; }

/* editor */
.editor-placeholder { text-align: center; padding: 32px 8px; }
.current { display: flex; align-items: center; gap: 10px; margin: 2px 0 2px; } .current h2 { flex: 1; }
.dot { width: 12px; height: 12px; border-radius: 6px; background: var(--text-3); flex: none; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { border: 1.5px solid transparent; background: var(--surface-muted); border-radius: 999px; padding: 7px 12px; font: inherit; font-size: 13px; font-weight: 600; cursor: pointer; color: var(--text-2); display: inline-flex; align-items: center; gap: 6px; }
.chip i { width: 8px; height: 8px; border-radius: 4px; display: block; background: var(--c); }
.chip.on { border-color: var(--c); color: var(--text); background: color-mix(in srgb, var(--c) 18%, transparent); }
.switch { display: flex; align-items: center; gap: 10px; margin: 16px 0 8px; font-size: 14px; font-weight: 600; }
.times { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; } .times label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 600; color: var(--text-2); }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; } .actions .btn-primary { flex: 1; }
.card-head { display: flex; align-items: center; justify-content: space-between; } .card-head h3 { margin: 0; }
.leave-form { margin-top: 12px; } .kinds { display: flex; gap: 8px; margin-bottom: 10px; }
.leave-list { list-style: none; margin: 12px 0 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.leave-list li { display: flex; align-items: center; gap: 10px; background: var(--surface-muted); border-radius: var(--r-sm); padding: 10px 12px; font-size: 14px; }
.leave-list li .grow { flex: 1; } .leave-list li .muted { font-size: 12px; }
.leave-list .del { border: 0; background: transparent; color: var(--danger); font-weight: 700; cursor: pointer; font-size: 13px; }

.toast { position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%); background: var(--text); color: var(--bg); padding: 12px 18px; border-radius: 999px; font-weight: 600; box-shadow: var(--shadow); z-index: 20; max-width: calc(100vw - 32px); }
.toast.err { background: var(--danger); color: #fff; }

/* Shift labels on tinted cells: darkened in light mode so yellow/sky stay readable (WCAG AA on the tint). */
.day, .chip, .legend span { --lbl: color-mix(in srgb, var(--c) 62%, #0F172A); }
@media (prefers-color-scheme: dark) { .day, .chip, .legend span { --lbl: var(--c); } }
html, body { overflow-x: hidden; }

/* Overnight carry: the previous day's shift still running after midnight. */
.day .carry { font-size: 10px; font-weight: 700; color: var(--cc); font-variant-numeric: tabular-nums; line-height: 1.2; }
.day.has-carry::before { content: ""; position: absolute; left: 6px; top: 3px; width: 34%; height: 3px; border-radius: 2px; background: var(--cc); }
@media (prefers-color-scheme: light) { .day .carry { color: color-mix(in srgb, var(--cc) 70%, #0F172A); } }
@media (max-width: 560px) { .day .carry { display: none; } }
.carry-note { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; color: var(--text-2); background: var(--surface-muted); border-radius: var(--r-sm); padding: 8px 10px; margin: 8px 0 0; }
.carry-note::before { content: ""; width: 4px; align-self: stretch; border-radius: 2px; background: var(--cc); flex: none; }