:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --ink: #1c2530;
  --muted: #6b7785;
  --line: #dde3e9;
  --accent: #2f6fed;
  --red: #e5534b;
  --yellow: #e8c33d;
  --green: #4caf68;
  --blue: #3d7be0;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
h1 { font-size: 1.5rem; margin: 0 0 1rem; }
h2 { font-size: 1.05rem; margin: 0 0 .75rem; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.mono { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .9em; }

/* layout */
.topbar {
  display: flex; align-items: center; gap: 1.5rem;
  padding: .7rem 1.25rem; background: var(--card);
  border-bottom: 1px solid var(--line); flex-wrap: wrap;
}
.brand { font-weight: 650; }
.topbar nav { display: flex; gap: 1rem; flex: 1; }
.topbar nav a { text-decoration: none; color: var(--muted); padding: .2rem 0; }
.topbar nav a.active { color: var(--ink); box-shadow: inset 0 -2px 0 var(--accent); }
.who { display: flex; align-items: center; gap: .75rem; color: var(--muted); }
.who .logout { font-size: .9em; }
.wrap { max-width: 1000px; margin: 0 auto; padding: 1.5rem 1rem 4rem; }
.page-head { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; }
.page-head h1 { margin-bottom: 0; }
.row { display: flex; gap: 1rem; flex-wrap: wrap; align-items: flex-end; }
.row > * { flex: 1 1 150px; }

/* cards & forms */
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 1.25rem; margin: 0 0 1.25rem;
}
label { display: block; margin-bottom: .85rem; font-size: .9rem; color: var(--muted); }
label.check { display: inline-flex; align-items: center; gap: .4rem; color: var(--ink); margin-right: 1rem; }
input, select {
  width: 100%; padding: .5rem .6rem; margin-top: .25rem;
  border: 1px solid var(--line); border-radius: 6px;
  font: inherit; color: var(--ink); background: #fff;
}
label.check input { width: auto; margin: 0; }
fieldset { border: 1px solid var(--line); border-radius: 8px; padding: .75rem 1rem; margin: 0 0 .85rem; }
legend { font-size: .85rem; color: var(--muted); padding: 0 .35rem; }
button, .btn {
  font: inherit; padding: .5rem .9rem; border-radius: 6px; cursor: pointer;
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  text-decoration: none; display: inline-block;
}
button:hover, .btn:hover { border-color: var(--muted); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.danger { color: var(--red); border-color: #f0c4c1; }
form.inline { display: inline-flex; gap: .3rem; margin: 0 .35rem .3rem 0; }
form.inline input { width: 130px; margin: 0; }

/* flashes & badges */
.flash { padding: .6rem .85rem; border-radius: 6px; margin-bottom: .75rem; font-size: .92rem; }
.flash.error { background: #fdeceb; color: #9b2f28; }
.flash.ok { background: #e8f5ec; color: #256b3b; }
.badge { font-size: .75rem; padding: .15rem .5rem; border-radius: 999px; }
.badge.ok { background: #e8f5ec; color: #256b3b; }
.badge.warn { background: #fdf3dc; color: #8a6412; }
.tag { font-size: .7rem; background: var(--line); border-radius: 4px; padding: .1rem .35rem; color: var(--muted); }

/* login */
.login-card {
  max-width: 340px; margin: 8vh auto; background: var(--card);
  border: 1px solid var(--line); border-radius: 10px; padding: 1.75rem;
}
.login-card h1 { font-size: 1.25rem; }
.login-card button { width: 100%; margin-top: .5rem; }

/* legend */
.legend { display: flex; gap: 1.1rem; flex-wrap: wrap; margin: 1rem 0 .4rem; font-size: .88rem; }
.key { display: inline-flex; align-items: center; gap: .4rem; }
.key em { color: var(--muted); font-style: normal; }
.sw { width: 13px; height: 13px; border-radius: 3px; display: inline-block; }
.sw.red { background: var(--red); } .sw.yellow { background: var(--yellow); }
.sw.green { background: var(--green); } .sw.blue { background: var(--blue); }
.hint { font-size: .85rem; margin: 0 0 1rem; }

/* calendar */
table.calendar { width: 100%; border-collapse: separate; border-spacing: 6px; table-layout: fixed; }
table.calendar th { font-size: .75rem; color: var(--muted); font-weight: 600; text-align: center; }
td.day {
  position: relative; height: 74px; vertical-align: top; border-radius: 8px;
  cursor: pointer; user-select: none; padding: .35rem .4rem;
  border: 1px solid transparent; transition: transform .06s ease;
}
td.day:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
td.day:active { transform: scale(.97); }
td.empty { background: transparent; }
td.day .num { font-weight: 600; font-size: .95rem; }
td.day.weekend .num { text-decoration: underline dotted; }
td.day.red { background: #fbe3e1; border-color: #f1bdb8; }
td.day.yellow { background: #fbf3d8; border-color: #ecdca6; }
td.day.green { background: #e2f3e7; border-color: #b7e0c3; }
td.day.blue { background: #e0ebfb; border-color: #b6cef3; }
td.day .shift { display: none; }
td.day.blue .shift {
  display: block; position: absolute; left: .35rem; right: .35rem; bottom: .35rem;
  width: auto; margin: 0; padding: .15rem .2rem; font-size: .75rem;
  border-color: #b6cef3; background: #fff;
}

/* toolbar */
.toolbar {
  display: flex; justify-content: space-between; align-items: center;
  gap: 1rem; flex-wrap: wrap; margin-top: 1.25rem;
}
.counts { display: flex; gap: .9rem; font-size: .9rem; color: var(--muted); }
.count { display: inline-flex; align-items: center; gap: .35rem; }
.actions { display: flex; align-items: center; gap: .6rem; }
.status { font-size: .85rem; color: var(--muted); }
.status.ok { color: #256b3b; }
.status.error { color: #9b2f28; }

/* picker popover */
.picker[hidden] { display: none; }
.picker {
  position: absolute; z-index: 20; background: var(--card);
  border: 1px solid var(--line); border-radius: 8px; padding: .3rem;
  box-shadow: 0 8px 24px rgba(20, 30, 45, .16); display: flex; flex-direction: column;
}
.picker button {
  border: none; background: none; text-align: left;
  display: flex; align-items: center; gap: .5rem; padding: .4rem .6rem; font-size: .88rem;
}
.picker button:hover { background: var(--bg); }

/* users table */
table.users { width: 100%; border-collapse: collapse; font-size: .9rem; }
table.users th, table.users td { text-align: left; padding: .5rem .4rem; border-bottom: 1px solid var(--line); }
table.users th { font-size: .78rem; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; }
.actions-cell { white-space: nowrap; }

@media (max-width: 640px) {
  .wrap { padding: 1rem .6rem 3rem; }
  table.calendar { border-spacing: 3px; }
  td.day { height: 58px; padding: .25rem; }
  td.day .num { font-size: .8rem; }
  td.day.blue .shift { font-size: .65rem; }
  .card { padding: 1rem; }
  table.users { display: block; overflow-x: auto; }
}

/* keep inline checkboxes from stretching across a .row */
.row > label.check { flex: 0 0 auto; margin-bottom: .85rem; }