:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-alt: #1e222b;
  --border: #2a2f3a;
  --text: #e6e8ec;
  --text-dim: #9aa3b2;
  --accent: #4f8cff;
  --danger: #ef4444;
  --warn: #f59e0b;
  --ok: #22c55e;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

a { color: inherit; text-decoration: none; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 8px;
}

.brand { font-weight: 600; font-size: 16px; }
.brand-sub { font-weight: 400; color: var(--text-dim); font-size: 12px; margin-left: 8px; }

.topnav { display: flex; gap: 4px; }
.topnav a {
  padding: 6px 12px;
  border-radius: var(--radius);
  color: var(--text-dim);
}
.topnav a:hover { background: var(--panel-alt); color: var(--text); }
.topnav a.active { background: var(--accent); color: white; }

.content { padding: 20px; max-width: 1600px; margin: 0 auto; }

h1 { font-size: 20px; margin: 0 0 4px; }
h2 { font-size: 15px; margin: 24px 0 10px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.04em; }
.page-desc { color: var(--text-dim); margin: 0 0 16px; font-size: 13px; }

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

.toolbar-sep {
  width: 1px;
  align-self: stretch;
  background: var(--border);
  margin: 0 4px;
}

button, .btn {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 7px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
}
button:hover, .btn:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: white; }
button.primary:hover { opacity: 0.9; }
button.danger { color: var(--danger); border-color: var(--danger); background: transparent; }

select, input[type=text], input[type=number], input[type=date], input[type=color] {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 10px;
  border-radius: var(--radius);
  font-size: 13px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 20px;
}

/* ---------- Schedule grid ---------- */

.grid-scroll {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

table.grid {
  border-collapse: collapse;
  width: 100%;
  font-size: 12.5px;
}

table.grid th, table.grid td {
  border: 1px solid var(--border);
  padding: 0;
  text-align: center;
  white-space: nowrap;
}

table.grid thead th {
  background: var(--panel-alt);
  padding: 6px 4px;
  position: sticky;
  top: 0;
  z-index: 2;
  font-weight: 500;
  color: var(--text-dim);
}

table.grid thead th.weekend { color: #f0a; }

table.grid td.name-cell, table.grid th.name-col {
  position: sticky;
  left: 0;
  background: var(--panel);
  text-align: left;
  padding: 6px 10px;
  z-index: 1;
  min-width: 170px;
  max-width: 220px;
}
table.grid thead th.name-col { z-index: 3; background: var(--panel-alt); }

.emp-name { font-weight: 600; }
.emp-role { color: var(--text-dim); font-size: 11px; }

td.day-cell {
  width: 34px;
  height: 34px;
  cursor: pointer;
  font-weight: 600;
  color: #0d0f13;
  position: relative;
}
td.day-cell.carryover-mark::after {
  content: "";
  position: absolute;
  top: 2px;
  right: 2px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 1px rgba(0,0,0,0.4);
}
td.day-cell:hover { outline: 2px solid var(--accent); outline-offset: -2px; }
td.day-cell.empty { color: transparent; background: var(--panel); }
td.day-cell.empty:hover { color: var(--text-dim); background: var(--panel-alt); }
td.day-cell.weekend-col { background-image: linear-gradient(0deg, rgba(255,255,255,0.02), rgba(255,255,255,0.02)); }
td.day-cell.has-warning { box-shadow: inset 0 0 0 2px var(--warn); }
td.day-cell { outline: none; } /* focus ring handled by .selected below, not the browser default */
td.day-cell.selected { box-shadow: inset 0 0 0 2px var(--accent); }
td.day-cell.editing {
  background: var(--panel-alt) !important;
  color: var(--text) !important;
  box-shadow: inset 0 0 0 2px var(--accent);
  font-family: ui-monospace, monospace;
}
td.day-cell.invalid-flash { animation: invalid-flash 0.6s ease; }
@keyframes invalid-flash {
  0%, 100% { box-shadow: inset 0 0 0 2px var(--danger); }
  50% { box-shadow: inset 0 0 0 2px transparent; }
}

td.total-cell, th.total-col { min-width: 60px; font-weight: 600; }
td.total-cell.extra-hours { color: var(--warn); }

tr.coverage-row td { background: var(--panel-alt); font-weight: 600; }
tr.coverage-row td.shortfall { color: var(--danger); }
tr.coverage-row td.ok { color: var(--ok); }

.legend { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 0; }
.legend-item { display: flex; align-items: center; gap: 5px; font-size: 12px; color: var(--text-dim); }
.legend-swatch { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }

/* ---------- Cell editor popover ---------- */

.popover-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 10;
}
.popover {
  position: fixed;
  z-index: 11;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  min-width: 260px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}
.popover h3 { margin: 0 0 10px; font-size: 13px; }
.popover .code-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-bottom: 10px; }
.popover .code-btn {
  padding: 8px 4px;
  border-radius: 6px;
  border: 1px solid var(--border);
  cursor: pointer;
  font-weight: 600;
  font-size: 12px;
  color: #0d0f13;
}
.popover .code-btn.selected { outline: 2px solid white; }
.popover .code-btn.disabled { opacity: 0.3; cursor: not-allowed; }
.popover .row { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.popover .row label { color: var(--text-dim); font-size: 12px; min-width: 90px; }
.popover .actions { display: flex; justify-content: space-between; margin-top: 12px; }

/* ---------- Settings page tabs ---------- */

.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.tab-btn {
  background: transparent;
  border: 1px solid transparent;
  border-bottom: none;
  color: var(--text-dim);
  padding: 8px 16px;
  border-radius: var(--radius) var(--radius) 0 0;
  cursor: pointer;
  font-size: 13px;
  margin-bottom: -1px;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
  color: var(--text);
  background: var(--panel);
  border-color: var(--border);
}

/* ---------- Tables (employees/codes) ---------- */

table.simple { width: 100%; border-collapse: collapse; }
table.simple th, table.simple td {
  text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); font-size: 13px;
}
table.simple th { color: var(--text-dim); font-weight: 500; }
table.simple input { width: 100%; }
.swatch { width: 16px; height: 16px; border-radius: 4px; display: inline-block; vertical-align: middle; }
.inline-actions { display: flex; gap: 6px; }
.hint { color: var(--text-dim); font-size: 12px; }
.warning-badge {
  display: inline-block; background: var(--warn); color: #241a00; font-size: 10px;
  padding: 1px 5px; border-radius: 4px; font-weight: 700; margin-left: 4px;
}

/* ---------- Drag-and-drop / shift grouping ---------- */

.drag-handle {
  cursor: grab;
  color: var(--text-dim);
  padding: 0 6px;
  user-select: none;
  touch-action: none;
}
.drag-handle:active { cursor: grabbing; }

tr[data-emp-id].dragging { opacity: 0.35; }
tr.row-inactive { opacity: 0.5; }
tr.row-inactive input { color: var(--text-dim); }

tr.group-header td {
  background: var(--panel-alt);
  font-weight: 700;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 6px 10px;
  position: sticky;
  left: 0;
}
tr.group-header .group-swatch {
  display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: middle;
}
tr.group-header .group-count { font-weight: 400; color: var(--text-dim); text-transform: none; letter-spacing: normal; margin-left: 6px; }

/* the schedule grid's group header cell spans every day column, so it
   should not stick to the left like the name column does */
table.grid tr.group-header td { position: static; }

/* ---------- Auth pages (login / change password) ---------- */

.auth-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  margin: 0;
}
.auth-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 100%;
  max-width: 360px;
}
.auth-error {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid var(--danger);
  color: #fca5a5;
  border-radius: var(--radius);
  padding: 8px 12px;
  font-size: 13px;
  margin-bottom: 16px;
}
.auth-field { margin-bottom: 14px; }
.auth-field label {
  display: block;
  color: var(--text-dim);
  font-size: 12px;
  margin-bottom: 4px;
}
.auth-field input {
  width: 100%;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: var(--radius);
  font-size: 14px;
  box-sizing: border-box;
}
.auth-submit { width: 100%; margin-top: 6px; padding: 9px; }

/* ---------- Nav bar user menu ---------- */

.user-menu {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-left: auto;
  font-size: 12px;
  color: var(--text-dim);
}
.user-name { color: var(--text); display: flex; align-items: center; gap: 6px; }
.role-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: var(--panel-alt);
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.role-badge.role-admin { color: #0d0f13; background: var(--accent); border-color: var(--accent); }
.role-badge.role-f3 { color: #0d0f13; background: var(--ok); border-color: var(--ok); }
.role-badge.role-f2 { color: #241a00; background: var(--warn); border-color: var(--warn); }
.role-badge.role-f1 { color: var(--text-dim); }
.link-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0;
  font-size: 12px;
  text-decoration: underline;
}
.link-btn:hover { color: var(--text); border-color: transparent; }

/* ---------- Small buttons / row actions (Admin page) ---------- */

button.small { padding: 4px 8px; font-size: 12px; }
.row-actions { display: flex; gap: 6px; }