:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --border: #dfe2e6;
  --text: #1f2430;
  --muted: #667085;
  --accent: #2f6fed;
  --accent-hover: #1f57c9;
  --danger: #d1453b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 56px;
}

.navbar .brand { font-weight: 700; }

.navbar nav { display: flex; gap: 18px; }

.navbar nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}

.navbar nav a:hover, .navbar nav a.active { color: var(--accent); }

.navbar .staff-info {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--muted);
}

.container { max-width: 1100px; margin: 24px auto; padding: 0 24px; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
}

h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 17px; margin: 0 0 12px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }
tr:hover td { background: #fafbfc; }
a { color: var(--accent); }

.toolbar { display: flex; gap: 10px; margin-bottom: 16px; align-items: center; flex-wrap: wrap; }

input[type="text"], input[type="email"], input[type="password"], input[type="number"],
select, textarea {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
}

textarea { width: 100%; min-height: 80px; }

label { display: block; font-size: 13px; color: var(--muted); margin: 12px 0 4px; }

.btn {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 6px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
}

.btn:hover { background: var(--accent-hover); }
.btn-secondary { background: transparent; color: var(--text); border-color: var(--border); }
.btn-danger { background: transparent; color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  background: #eef1f5;
  color: var(--muted);
}

.stat-grid { display: flex; gap: 16px; flex-wrap: wrap; }
.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
  min-width: 140px;
}
.stat-card .value { font-size: 26px; font-weight: 700; }
.stat-card .label { font-size: 13px; color: var(--muted); }

.error { color: var(--danger); font-size: 14px; margin-bottom: 12px; }

.calendar-table { table-layout: fixed; }
.calendar-table th { text-align: center; }
.calendar-table td { padding: 0; border: 1px solid var(--border); height: 64px; vertical-align: top; }
.calendar-table td.cal-empty { background: #fafbfc; }
.calendar-table td.cal-day a {
  display: block;
  height: 100%;
  padding: 6px 8px;
  text-decoration: none;
  color: var(--text);
}
.calendar-table td.cal-day a:hover { background: #fafbfc; }
.calendar-table td.cal-today { background: #eef4ff; }
.calendar-table td.cal-selected { outline: 2px solid var(--accent); outline-offset: -2px; }
.cal-daynum { font-size: 13px; font-weight: 600; }
.cal-count {
  display: inline-block;
  margin-top: 6px;
  padding: 1px 7px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
}

.login-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-box { width: 320px; }