:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --border: #e2e6ea;
  --text: #1c2530;
  --text-dim: #6b7684;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --success-bg: #dcfce7;
  --warning: #b45309;
  --warning-bg: #fef3c7;
  --danger: #dc2626;
  --danger-bg: #fee2e2;
  --radius: 10px;
  --sidebar-w: 220px;
}

* { 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);
  font-size: 14px;
}

a { color: var(--primary); text-decoration: none; }

/* ---------- Auth pages (login / change password) ---------- */
.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.auth-card h1 { font-size: 20px; margin: 0 0 4px; }
.auth-card p.sub { color: var(--text-dim); margin: 0 0 24px; font-size: 13px; }

/* ---------- Form basics ---------- */
label { display: block; font-size: 13px; font-weight: 600; margin: 14px 0 6px; }
label:first-child { margin-top: 0; }
input, select, textarea {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  background: var(--surface);
  color: var(--text);
}
textarea { resize: vertical; min-height: 60px; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}
button {
  font-family: inherit;
  cursor: pointer;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 13.5px;
  font-weight: 600;
}
.btn:hover { background: #f0f2f5; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.btn-sm { padding: 5px 10px; font-size: 12.5px; }
.btn-block { width: 100%; justify-content: center; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }

.error-box {
  background: var(--danger-bg);
  color: #991b1b;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
  margin-top: 14px;
}
.ok-box {
  background: var(--success-bg);
  color: #14532d;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
  margin-top: 14px;
}

/* ---------- App shell (sidebar + content) ---------- */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebar-w);
  background: #14213d;
  color: #fff;
  flex-shrink: 0;
  padding: 20px 0;
  display: flex;
  flex-direction: column;
}
.sidebar .brand { font-weight: 700; font-size: 16px; padding: 0 20px 20px; border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 10px;}
.sidebar .brand small { display: block; font-weight: 400; color: #93a3c1; font-size: 11px; margin-top: 2px;}
.sidebar nav { flex: 1; }
.sidebar nav a, .sidebar nav button.navlink {
  display: block;
  width: 100%;
  text-align: left;
  padding: 11px 20px;
  color: #c4cede;
  font-size: 13.5px;
  font-weight: 500;
  border: none;
  background: none;
  cursor: pointer;
}
.sidebar nav a.active, .sidebar nav button.navlink.active { background: rgba(255,255,255,0.08); color: #fff; border-left: 3px solid var(--primary); }
.sidebar nav a:hover, .sidebar nav button.navlink:hover { background: rgba(255,255,255,0.06); color: #fff; }
.sidebar .foot { padding: 14px 20px 0; border-top: 1px solid rgba(255,255,255,0.1); }
.sidebar .foot .who { font-size: 12.5px; color: #93a3c1; margin-bottom: 8px; word-break: break-word; }

.content { flex: 1; padding: 28px 32px; max-width: 1200px; overflow-x: auto; }
.content h1 { font-size: 21px; margin: 0 0 4px; }
.content .page-sub { color: var(--text-dim); margin: 0 0 22px; font-size: 13.5px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-bottom: 20px;
}
.card h2 { font-size: 15px; margin: 0 0 14px; }

.grid { display: grid; gap: 16px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr 1fr; } }

.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; }
.stat .num { font-size: 26px; font-weight: 700; }
.stat .label { color: var(--text-dim); font-size: 12.5px; margin-top: 2px; }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--text-dim); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; }
tr:hover td { background: #fafbfc; }
.table-wrap { overflow-x: auto; }

.badge { display: inline-block; padding: 3px 9px; border-radius: 20px; font-size: 11.5px; font-weight: 700; }
.badge-green { background: var(--success-bg); color: #14532d; }
.badge-yellow { background: var(--warning-bg); color: #78350f; }
.badge-red { background: var(--danger-bg); color: #7f1d1d; }
.badge-gray { background: #eef0f3; color: #4b5563; }

.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.toolbar input, .toolbar select { width: auto; }
.spacer { flex: 1; }

.modal-overlay {
  position: fixed; inset: 0; background: rgba(15,23,42,0.45);
  display: flex; align-items: flex-start; justify-content: center;
  padding: 40px 16px; overflow-y: auto; z-index: 50;
}
.modal {
  background: var(--surface); border-radius: var(--radius);
  padding: 24px 26px; width: 100%; max-width: 640px;
}
.modal h2 { margin-top: 0; }
.modal .close-x { float: right; background: none; border: none; font-size: 18px; color: var(--text-dim); cursor: pointer; }

.hidden { display: none !important; }
.muted { color: var(--text-dim); }
.small { font-size: 12px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.tag-row { display: flex; gap: 8px; flex-wrap: wrap; }

.field-hint { color: var(--text-dim); font-size: 11.5px; margin-top: 4px; }

.clock-display { text-align: center; padding: 20px 0; }
.clock-display .time { font-size: 42px; font-weight: 700; font-variant-numeric: tabular-nums; }
.clock-display .date { color: var(--text-dim); margin-top: 4px; }
.clock-actions { display: flex; gap: 10px; justify-content: center; margin-top: 20px; flex-wrap: wrap; }
.clock-actions .btn { padding: 12px 22px; font-size: 14px; }

/* ---- lightweight CSS bar charts (Reports page) ---- */
.bars { display: flex; flex-direction: column; gap: 10px; }
.bar-row { display: grid; grid-template-columns: 110px 1fr 90px; align-items: center; gap: 10px; font-size: 12.5px; }
.bar-row .bar-label { color: var(--text-dim); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-track { background: #eef0f3; border-radius: 6px; height: 16px; overflow: hidden; }
.bar-fill { background: var(--primary); height: 100%; border-radius: 6px; min-width: 2px; }
.bar-row .bar-value { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }

/* ---- document list (employee modal / staff docs) ---- */
.doc-list { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.doc-item { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 8px 10px; background: #fafbfc; border: 1px solid var(--border); border-radius: 8px; font-size: 12.5px; }
.doc-item .doc-meta { color: var(--text-dim); font-size: 11.5px; }