:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --border: #d9d9d9;
  --row-alt: #f7f7f8;
  --muted: #767676;
  --accent: #2f6fed;
  --placeholder: #9a9a9a;
  --prebook-bg: #fff3b0;
  --prebook-bg-alt: #ffec8a;
  --hardbooked-bg: #cdeed3;
  --confirmed-bg: #7ddb95;
  --rejected-bg: #f6c6c2;
  --confirm-icon: #1e7e34;
  --reject-icon: #c0392b;
  --manual-bg: #eef1fb;
  --manual-bg-alt: #e3e8f9;
  --manual-bucket-bg: #ffe0b3;
  --manual-bucket-bg-alt: #ffd18f;
  --margin-good-bg: #cdeed3;
  --margin-low-bg: #fff3b0;
  --margin-negative-bg: #f7c9d6;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1a1a;
    --fg: #eaeaea;
    --border: #3a3a3a;
    --row-alt: #232323;
    --muted: #9a9a9a;
    --accent: #6d9bff;
    --placeholder: #7d7d7d;
    --prebook-bg: #4a3f10;
    --prebook-bg-alt: #574a12;
    --hardbooked-bg: #163d20;
    --confirmed-bg: #1f8a44;
    --rejected-bg: #4a2320;
    --confirm-icon: #4ade80;
    --reject-icon: #f87171;
    --manual-bg: #232a42;
    --manual-bg-alt: #2a3350;
    --manual-bucket-bg: #5a3d14;
    --manual-bucket-bg-alt: #6b4818;
    --margin-good-bg: #163d20;
    --margin-low-bg: #4a3f10;
    --margin-negative-bg: #4a1f2c;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 12px/1.3 -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}

header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 2;
}

h1 { font-size: 18px; margin: 0 0 10px; }

#main-nav {
  display: flex;
  gap: 4px;
  margin-bottom: 10px;
}

.nav-btn {
  padding: 5px 12px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--fg);
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  font-size: 12px;
}
.nav-btn:hover { border-color: var(--accent); color: var(--accent); }
.nav-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
}

#project-filter {
  max-width: 260px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--fg);
  cursor: pointer;
  white-space: nowrap;
}
.checkbox-label input { cursor: pointer; }

button {
  padding: 6px 14px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
}
button:hover { opacity: 0.9; }

.muted { color: var(--muted); font-size: 12px; }

.toast {
  margin-top: 8px;
  padding: 6px 10px;
  border-radius: 6px;
  background: var(--row-alt);
  border: 1px solid var(--border);
  font-size: 12px;
}
.toast.error { color: #c0392b; }

main { padding: 12px 20px 40px; }

#table-scroll {
  overflow: auto;
  /* max-height is set from JS to fit exactly under the page header */
}

table { border-collapse: separate; border-spacing: 0; width: 100%; min-width: 900px; }

th, td {
  padding: 4px 6px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

/* position:sticky on individual th/td is unreliable across browsers; sticking
   the whole thead as one unit works consistently and keeps both header rows
   (title + filter) together with no per-row offset math needed. */
thead {
  position: sticky;
  top: 0;
  z-index: 1;
}

thead th {
  background: var(--bg);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}
thead th:hover { color: var(--accent); }

tr.filter-row th { padding: 2px 4px; cursor: default; }
tr.filter-row th:hover { color: inherit; }
.col-filter {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--fg);
  padding: 2px 4px;
  border-radius: 4px;
  font: inherit;
  font-weight: 400;
}
.col-filter:focus { border-color: var(--accent); outline: none; }

tbody tr.person-row.alt { background: var(--row-alt); }

tbody tr.person-row.prebook-row { background: var(--prebook-bg); }
tbody tr.person-row.prebook-row.alt { background: var(--prebook-bg-alt); }

tbody tr.person-row.row-disabled { opacity: 0.45; }
tbody tr.person-row.row-disabled input { color: var(--muted); }

.checkbox-cell { width: 20px; text-align: center; }
.checkbox-cell input { cursor: pointer; }

td input, td select {
  width: 100%;
  border: 1px solid transparent;
  background: transparent;
  color: var(--fg);
  padding: 2px 4px;
  border-radius: 4px;
  font: inherit;
}
td select { cursor: pointer; }
td input:hover, td select:hover { border-color: var(--border); }
td input:focus, td select:focus {
  border-color: var(--accent);
  background: var(--bg);
  outline: none;
}

.amount { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }

.month-cell { cursor: default; }
.month-cell.empty-cell { color: var(--placeholder); }
.month-cell:hover { background: var(--row-alt); }

.person-metric-cell { padding-top: 3px; padding-bottom: 3px; line-height: 1.35; }
.person-metric-cell.empty-cell .metric-cost,
.person-metric-cell.empty-cell .metric-margin { display: none; }
.metric-revenue { font-variant-numeric: tabular-nums; }
.metric-cost, .metric-margin {
  font-size: 9px;
  font-weight: 400;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.metric-margin { font-weight: 600; }

.month-cell.margin-good { background: var(--margin-good-bg); }
.month-cell.margin-low { background: var(--margin-low-bg); }
.month-cell.margin-negative { background: var(--margin-negative-bg); }
.month-cell.margin-good:hover,
.month-cell.margin-low:hover,
.month-cell.margin-negative:hover { filter: brightness(0.93); }

.month-cell.cell-prebooked { background: var(--prebook-bg); }
.month-cell.cell-hardbooked { background: var(--hardbooked-bg); }
.month-cell.cell-confirmed { background: var(--confirmed-bg); }
.month-cell.cell-rejected { background: var(--rejected-bg); }
.month-cell.cell-prebooked:hover,
.month-cell.cell-hardbooked:hover,
.month-cell.cell-confirmed:hover,
.month-cell.cell-rejected:hover { filter: brightness(0.93); }

.month-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 3px;
}

.cell-btn {
  border: 1px solid transparent;
  background: none;
  border-radius: 3px;
  width: 15px;
  height: 15px;
  line-height: 13px;
  padding: 0;
  font-size: 10px;
  font-weight: 700;
  cursor: pointer;
  opacity: 0.45;
  flex: none;
}
.cell-btn-confirm { color: var(--confirm-icon); }
.cell-btn-reject { color: var(--reject-icon); }
.cell-btn:hover { opacity: 0.8; border-color: currentColor; }
.cell-btn-confirm.active { opacity: 1; background: var(--confirm-icon); color: #fff; }
.cell-btn-reject.active { opacity: 1; background: var(--reject-icon); color: #fff; }

.cell-amount { cursor: text; }
.cell-amount.overridden {
  border-bottom: 1px dashed currentColor;
  font-style: italic;
}

.cell-amount-input {
  width: 68px;
  text-align: right;
  border: 1px solid var(--accent);
  border-radius: 3px;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
  font-variant-numeric: tabular-nums;
  padding: 1px 3px;
}
.cell-amount-input:focus { outline: none; }

tbody tr.person-row.manual-row { background: var(--manual-bg); }
tbody tr.person-row.manual-row.alt { background: var(--manual-bg-alt); }

tbody tr.person-row.manual-bucket-row { background: var(--manual-bucket-bg); }
tbody tr.person-row.manual-bucket-row.alt { background: var(--manual-bucket-bg-alt); }

.manual-delete-btn {
  border: none;
  background: none;
  color: var(--muted);
  font-size: 10px;
  padding: 0;
  width: 15px;
  height: 15px;
  line-height: 15px;
  cursor: pointer;
  opacity: 0.5;
}
.manual-delete-btn:hover { opacity: 1; color: var(--reject-icon); }

.manual-label-input {
  font-weight: 600;
}

.manual-amount { cursor: text; }
.manual-amount:hover { text-decoration: underline dotted; }

.manual-amount-input {
  width: 68px;
  text-align: right;
  border: 1px solid var(--accent);
  border-radius: 3px;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
  font-variant-numeric: tabular-nums;
  padding: 1px 3px;
}
.manual-amount-input:focus { outline: none; }

tr.spacer-row td { border: none; background: var(--bg); height: 10px; padding: 0; }

tr.add-manual-row td { border-top: none; padding-top: 2px; }
.add-manual-btn {
  background: none;
  border: 1px dashed var(--border);
  color: var(--muted);
  font-weight: 600;
  padding: 4px 10px;
  width: 100%;
  text-align: left;
}
.add-manual-btn:hover { border-color: var(--accent); color: var(--accent); }

tr.totals-row {
  font-weight: 700;
  background: var(--row-alt);
}
tr.totals-row td { border-bottom: 2px solid var(--border); border-top: 2px solid var(--border); }
.totals-label { white-space: nowrap; }

.totals-hb {
  font-size: 10px;
  font-weight: 400;
  color: var(--muted);
  margin-top: 1px;
}

.status-chip {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 10px;
  font-size: 11px;
  border: 1px solid var(--border);
  white-space: nowrap;
}
.status-chip.status-hard { background: #1e7e34; color: #fff; border-color: #1e7e34; }
.status-chip.status-pre { background: #b8860b; color: #fff; border-color: #b8860b; }
.status-chip.status-manual { background: var(--accent); color: #fff; border-color: var(--accent); }
.status-chip.status-none { color: var(--placeholder); font-style: italic; border-style: dashed; }

.tooltip {
  position: fixed;
  z-index: 10;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  padding: 8px 10px;
  pointer-events: none;
  max-width: 320px;
}
.tooltip-inner { display: flex; flex-direction: column; gap: 4px; }
.tooltip-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  white-space: nowrap;
}
.tooltip-project { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.tooltip-amount { font-variant-numeric: tabular-nums; }

.ms-filter-btn {
  width: 100%;
  text-align: left;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--fg);
  padding: 2px 4px;
  border-radius: 4px;
  font: inherit;
  font-weight: 400;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ms-filter-btn:hover { border-color: var(--accent); }
.ms-filter-btn.active-filter { border-color: var(--accent); color: var(--accent); font-weight: 600; }

.filter-popover {
  position: fixed;
  z-index: 15;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  padding: 6px;
  max-height: 280px;
  overflow-y: auto;
  min-width: 180px;
}
.filter-popover-actions {
  display: flex;
  justify-content: space-between;
  padding: 2px 4px 6px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}
.filter-popover-actions button {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  padding: 0;
  cursor: pointer;
}
.filter-popover-option {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 4px;
  font-size: 12px;
  font-weight: 400;
  cursor: pointer;
  border-radius: 4px;
  white-space: nowrap;
}
.filter-popover-option:hover { background: var(--row-alt); }

.assign-link { color: var(--accent); text-decoration: none; font-size: 12px; font-weight: 600; }
.assign-link:hover { text-decoration: underline; }

.person-metric-cell { position: relative; }
.assign-cell-btn {
  position: absolute;
  top: 1px;
  right: 1px;
  width: 14px;
  height: 14px;
  line-height: 12px;
  padding: 0;
  font-size: 10px;
  font-weight: 700;
  border: 1px solid var(--accent);
  background: var(--bg);
  color: var(--accent);
  border-radius: 3px;
  opacity: 0;
  cursor: pointer;
}
.month-cell:hover .assign-cell-btn { opacity: 0.85; }
.assign-cell-btn:hover { opacity: 1 !important; }

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
}
.modal-overlay[hidden] { display: none; }
.modal-panel {
  background: var(--bg);
  border-radius: 10px;
  padding: 16px 20px;
  width: 420px;
  max-width: 90vw;
  max-height: 80vh;
  overflow: auto;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
.modal-header h2 { font-size: 14px; margin: 0; }
.modal-close {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 14px;
  cursor: pointer;
  padding: 2px 6px;
}
.modal-close:hover { color: var(--fg); }

.assignment-chips { display: flex; flex-direction: column; gap: 4px; margin-bottom: 8px; }
.assignment-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  background: var(--confirmed-bg);
  color: var(--fg);
  padding: 3px 8px;
  border-radius: 10px;
}
.assignment-chip .chip-amount { font-weight: 600; font-variant-numeric: tabular-nums; margin-left: auto; }
.remove-assignment { cursor: pointer; opacity: 0.6; font-size: 10px; }
.remove-assignment:hover { opacity: 1; }

.add-assignment { display: flex; gap: 6px; align-items: center; }
.add-assignment select {
  flex: 1;
  min-width: 0;
  padding: 3px 5px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
}
.add-amount-input {
  width: 90px;
  padding: 3px 5px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
}
.assign-btn { padding: 3px 10px; font-size: 11px; }