:root {
  --surface: #FFFFFF;
  --canvas: #F7F7F8;
  --ink: #16181D;
  --muted: #667085;
  --rule: #E3E5E8;
  --rule-strong: #C9CDD3;
  --accent: #002FA7;
  --accent-soft: #EEF2FF;
  --danger: #B42318;
  --success: #067647;
  --shadow-menu: 0 12px 32px rgba(22, 24, 29, 0.14);
  color-scheme: light;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html {
  min-width: 320px;
  background: var(--canvas);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--canvas);
  font-size: 14px;
  line-height: 1.45;
}

button,
input { font: inherit; }

button { color: inherit; }

button:focus-visible,
input:focus-visible,
label:has(input:focus-visible) {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

h1,
h2,
h3,
p { margin-top: 0; }

h1 {
  margin-bottom: 7px;
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1;
}

h2 {
  margin-bottom: 0;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.025em;
}

h3 {
  margin-bottom: 0;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.page-shell {
  width: min(1680px, calc(100% - 40px));
  margin: 0 auto;
}

.app-header {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(520px, 660px);
  gap: 36px;
  align-items: end;
  padding: 30px 0 24px;
  border-bottom: 1px solid var(--ink);
}

.title-block > p:last-child {
  max-width: 520px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 13px;
}

.section-index {
  margin-bottom: 9px;
  color: var(--accent);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.import-cluster {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.import-control {
  min-width: 0;
  padding: 11px 12px 10px;
  border: 1px solid var(--rule-strong);
  background: var(--surface);
}

.import-control[data-state="success"] { border-color: #8FD7B4; }
.import-control[data-state="error"] { border-color: #FDA29B; }

.import-heading,
.file-control {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
}

.import-heading strong {
  font-size: 12px;
  font-weight: 600;
}

.load-state {
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
}

.import-control[data-state="success"] .load-state { color: var(--success); }
.import-control[data-state="error"] .load-state { color: var(--danger); }

.file-control {
  position: relative;
  margin-top: 9px;
  cursor: pointer;
}

.file-action,
.secondary-button {
  flex: 0 0 auto;
  padding: 6px 9px;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  background: var(--surface);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}

.file-action:hover,
.secondary-button:hover { border-color: var(--accent); color: var(--accent); }

.primary-button,
.danger-button {
  flex: 0 0 auto;
  padding: 7px 10px;
  border: 1px solid var(--accent);
  border-radius: 2px;
  color: var(--surface);
  background: var(--accent);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}

.primary-button:hover { background: #00257F; }
.primary-button:disabled {
  border-color: var(--rule-strong);
  color: #8A9099;
  background: #ECEDEF;
  cursor: not-allowed;
}
.danger-button { border-color: #F3B4AE; color: var(--danger); background: var(--surface); }
.danger-button:hover { border-color: var(--danger); background: #FEF3F2; }

.file-name {
  min-width: 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-control input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.import-status {
  overflow: hidden;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.import-control[data-state="error"] .import-status { color: var(--danger); }

.baseline-section,
.analysis-section { padding: 26px 0; }

.baseline-section { border-bottom: 1px solid var(--rule-strong); }

.section-heading,
.control-bar,
.report-heading,
.panel-heading {
  display: flex;
  gap: 24px;
  align-items: flex-end;
  justify-content: space-between;
}

.section-heading > p,
.report-heading > p,
.panel-heading p {
  max-width: 480px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 12px;
  text-align: right;
}

.baseline-ribbon {
  display: grid;
  grid-auto-columns: minmax(128px, 1fr);
  grid-auto-flow: column;
  overflow-x: auto;
  margin-top: 18px;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}

.ribbon-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 20px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  color: var(--muted);
  font-size: 12px;
}

.baseline-item {
  min-width: 128px;
  padding: 10px 12px 12px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: var(--surface);
}

.baseline-item.is-missing { box-shadow: inset 0 -2px var(--danger); }

.baseline-item label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.baseline-input-wrap {
  display: flex;
  gap: 5px;
  align-items: baseline;
}

.baseline-input-wrap input {
  min-width: 0;
  width: 100%;
  padding: 2px 0;
  border: 0;
  border-bottom: 1px solid var(--rule-strong);
  border-radius: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  font-size: 16px;
  font-variant-numeric: tabular-nums;
}

.baseline-input-wrap input:focus { border-color: var(--accent); }
.baseline-input-wrap span { color: var(--muted); font-size: 10px; }

.analysis-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.mode-switch {
  display: inline-grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--rule-strong);
  background: var(--surface);
}

.mode-switch label { position: relative; cursor: pointer; }
.mode-switch label + label { border-left: 1px solid var(--rule-strong); }
.mode-switch input { position: absolute; opacity: 0; }

.mode-switch span {
  display: block;
  min-width: 76px;
  padding: 7px 10px;
  font-size: 11px;
  font-weight: 600;
  text-align: center;
}

.mode-switch input:checked + span { color: var(--surface); background: var(--accent); }

.excluded-panel {
  margin-top: 14px;
  padding: 16px;
  border: 1px solid var(--accent);
  background: var(--accent-soft);
}

.panel-heading { align-items: start; }
.panel-heading h3 { margin-bottom: 4px; }

#excluded-engineers-list { margin-top: 14px; }
#excluded-engineers-list ul { padding: 0; margin: 0; list-style: none; }

#excluded-engineers-list li {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  padding: 9px 0;
  border-top: 1px solid #CAD5F4;
}

#excluded-engineers-list strong { display: block; font-size: 12px; }
#excluded-engineers-list small { display: block; margin-top: 2px; color: var(--muted); font-size: 10px; }
.excluded-empty { margin: 0; color: var(--muted); font-size: 12px; }

.text-button {
  padding: 3px 0;
  border: 0;
  border-bottom: 1px solid currentColor;
  color: var(--accent);
  background: transparent;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}

.group-toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule-strong);
}

.group-tabs {
  display: flex;
  min-width: 0;
  gap: 3px;
  overflow-x: auto;
}

.group-tab {
  flex: 0 0 auto;
  min-width: 58px;
  padding: 7px 11px;
  border: 1px solid transparent;
  border-radius: 2px;
  color: var(--muted);
  background: transparent;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}

.group-tab:hover { color: var(--accent); background: var(--accent-soft); }
.group-tab.is-active { border-color: var(--accent); color: var(--surface); background: var(--accent); }

.group-manager-panel {
  margin-top: 10px;
  padding: 16px;
  border: 1px solid var(--rule-strong);
  background: var(--surface);
}

.group-create-form {
  display: grid;
  grid-template-columns: auto minmax(180px, 340px) auto 1fr;
  gap: 9px;
  align-items: center;
  margin-top: 16px;
  padding: 12px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.group-create-form label,
.manager-label {
  margin: 0;
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.group-create-form input,
.group-rename-form input,
.assign-control select {
  width: 100%;
  min-width: 0;
  padding: 7px 9px;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  color: var(--ink);
  background: var(--surface);
  font-size: 11px;
}

.groups-manager-list { display: grid; gap: 10px; margin-top: 12px; }
.group-manager-empty,
.manager-empty-copy { margin: 0; color: var(--muted); font-size: 11px; }

.group-manager-card {
  padding: 12px;
  border: 1px solid var(--rule);
  background: #FAFAFB;
}

.group-rename-form {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) auto auto;
  gap: 7px;
  align-items: center;
}

.group-assignment-grid {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(240px, 0.65fr);
  gap: 22px;
  margin-top: 13px;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}

.assigned-engineers { padding: 0; margin: 6px 0 0; list-style: none; }
.assigned-engineers li {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  min-height: 30px;
  border-bottom: 1px solid var(--rule);
  font-size: 11px;
}

.assign-control { display: grid; gap: 7px; align-content: start; }
.assign-control select:disabled { color: #8A9099; background: #F1F2F4; }

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 18px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  background: var(--surface);
}

.metric-strip article {
  min-width: 0;
  min-height: 98px;
  padding: 13px 15px;
}

.metric-strip article + article { border-left: 1px solid var(--rule); }

.metric-strip p {
  margin-bottom: 11px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.metric-strip strong {
  display: block;
  overflow: hidden;
  margin-bottom: 4px;
  font-size: clamp(22px, 2.5vw, 31px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.metric-strip span { color: var(--muted); font-size: 10px; }

.empty-state {
  display: grid;
  min-height: 250px;
  place-content: center;
  margin-top: 20px;
  border: 1px solid var(--rule);
  background: var(--surface);
  text-align: center;
}

.empty-state h3 { margin-bottom: 7px; }
.empty-state p { margin-bottom: 0; color: var(--muted); font-size: 12px; }

.reports { margin-top: 22px; }

.report-section {
  margin-bottom: 22px;
  padding: 18px;
  border: 1px solid var(--rule-strong);
  background: var(--surface);
}

.report-heading {
  min-height: 42px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ink);
}

.report-heading .section-index { margin-bottom: 5px; }

.chart-frame {
  position: relative;
  width: 100%;
  height: 360px;
  padding: 18px 8px 8px;
}

.chart-frame-large {
  min-height: 460px;
  height: min(52vw, 540px);
}

.report-table-wrap { margin-top: 12px; }

.table-scroll {
  max-width: 100%;
  overflow: auto;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}

table {
  width: 100%;
  min-width: 760px;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

th,
td {
  height: 38px;
  padding: 7px 10px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  text-align: right;
  white-space: nowrap;
}

thead th {
  color: #4D5562;
  background: #F1F2F4;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

tbody th { font-weight: 500; }

th:first-child,
td:first-child { text-align: left; }

#employee-table {
  width: max-content;
  min-width: 0;
  table-layout: fixed;
}

#employee-table .engineer-column {
  position: sticky;
  left: 0;
  z-index: 2;
  background: var(--surface);
  text-align: left;
}

#employee-table thead .engineer-column { z-index: 3; background: #F1F2F4; }
#employee-table :is(.metric-column, .month-column, .total-column, .workload-column, .action-column) {
  text-align: center;
}

#employee-table .engineer-col { width: 210px; }
#employee-table .metric-col { width: 76px; }
#employee-table .total-col { width: 102px; }
#employee-table .workload-col { width: 132px; }
#employee-table .action-col { width: 42px; }
#employee-table .engineer-column { min-width: 210px; width: 210px; }
#employee-table .metric-column { min-width: 76px; width: 76px; }
#employee-table .total-column { min-width: 102px; width: 102px; }
#employee-table .workload-column { min-width: 132px; width: 132px; }
#employee-table .action-column { min-width: 42px; width: 42px; }

#monthly-report-table th:not(:first-child),
#monthly-report-table td:not(:first-child),
#average-report-table th:not(.engineer-column),
#average-report-table td:not(.engineer-column),
#individual-report-table th:not(:first-child),
#individual-report-table td:not(:first-child) { text-align: center; }

#average-report-table .engineer-column { text-align: left; }
tbody tr:hover > * { background-color: #F8FAFF; }

.employee-button {
  padding: 0;
  border: 0;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  font-size: 11px;
  font-weight: 600;
  text-align: left;
}

.employee-button:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }

.row-menu-button {
  width: 26px;
  height: 26px;
  padding: 0;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  font-size: 12px;
  letter-spacing: 1px;
}

.row-menu-button:hover { border-color: var(--rule-strong); background: var(--surface); }
.total-cell,
.workload-cell { color: var(--accent); font-weight: 700; }
.negative-value { color: var(--danger); }
.empty-table-cell { height: 64px; color: var(--muted); text-align: center !important; }

.individual-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(180px, 0.35fr);
  border-bottom: 1px solid var(--rule);
}

.individual-summary > div { padding: 16px 0; }
.individual-summary > div + div { padding-left: 18px; border-left: 1px solid var(--rule); }
.individual-summary p { margin-bottom: 6px; color: var(--muted); font-size: 10px; text-transform: uppercase; }
.individual-summary strong { display: block; font-size: 22px; font-weight: 500; letter-spacing: -0.03em; }
.individual-summary span { display: block; margin-top: 3px; color: var(--muted); font-size: 10px; }

.context-menu {
  position: fixed;
  z-index: 100;
  min-width: 170px;
  padding: 5px;
  border: 1px solid var(--rule-strong);
  background: var(--surface);
  box-shadow: var(--shadow-menu);
}

.context-menu button {
  width: 100%;
  padding: 8px 10px;
  border: 0;
  color: var(--danger);
  background: transparent;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  text-align: left;
}

.context-menu button:hover,
.context-menu button:focus { background: #FEF3F2; outline: 0; }

footer {
  padding: 3px 0 28px;
  color: var(--muted);
  font-size: 10px;
}

footer p { margin: 0; }

.status-toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 110;
  max-width: min(420px, calc(100vw - 40px));
  padding: 0;
  border-left: 3px solid var(--accent);
  color: var(--surface);
  background: var(--ink);
  box-shadow: var(--shadow-menu);
  font-size: 12px;
  font-weight: 500;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 160ms ease, transform 160ms ease, padding 160ms ease;
  pointer-events: none;
}

.status-toast.is-visible { padding: 10px 13px; opacity: 1; transform: translateY(0); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

[hidden] { display: none !important; }

@media (max-width: 1050px) {
  .app-header { grid-template-columns: 1fr; align-items: start; }
  .import-cluster { max-width: 680px; }
  .chart-frame-large { height: 480px; }
}

@media (max-width: 760px) {
  .page-shell { width: min(100% - 24px, 1680px); }
  .app-header { gap: 22px; padding-top: 22px; }
  .import-cluster { grid-template-columns: 1fr; }
  .section-heading,
  .control-bar,
  .report-heading { align-items: flex-start; flex-direction: column; gap: 12px; }
  .section-heading > p,
  .report-heading > p { text-align: left; }
  .analysis-actions { width: 100%; align-items: stretch; flex-direction: column; }
  .mode-switch { width: 100%; }
  .mode-switch span { min-width: 0; }
  .secondary-button { align-self: flex-start; }
  .group-toolbar { align-items: flex-start; flex-direction: column; }
  .group-tabs { width: 100%; }
  .group-create-form { grid-template-columns: 1fr; align-items: stretch; }
  .group-assignment-grid { grid-template-columns: 1fr; }
  .metric-strip { grid-template-columns: 1fr 1fr; }
  .metric-strip article:nth-child(3) { border-left: 0; border-top: 1px solid var(--rule); }
  .metric-strip article:nth-child(4) { border-top: 1px solid var(--rule); }
  .report-section { padding: 12px; }
  .chart-frame-large { min-height: 420px; height: 420px; }
  .individual-summary { grid-template-columns: 1fr; }
  .individual-summary > div + div { padding-left: 0; border-top: 1px solid var(--rule); border-left: 0; }
}

@media (max-width: 460px) {
  .metric-strip { grid-template-columns: 1fr; }
  .metric-strip article + article { border-top: 1px solid var(--rule); border-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}


.group-focus-layout {
  display: grid;
  grid-template-columns: minmax(180px, 260px) minmax(240px, 1fr);
  gap: 14px 18px;
  margin-top: 12px;
}

.group-focus-layout > div { grid-column: 1 / -1; }

.manager-field {
  display: grid;
  gap: 7px;
}

.manager-field select,
.manager-field input {
  width: 100%;
  min-width: 0;
  padding: 7px 9px;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  color: var(--ink);
  background: var(--surface);
  font-size: 11px;
}

.assign-search-form {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto;
  gap: 8px;
  align-items: end;
}

@media (max-width: 760px) {
  .group-focus-layout,
  .assign-search-form { grid-template-columns: 1fr; }
}

.baseline-item.is-unsaved { box-shadow: inset 0 -2px #FFB800; }
.baseline-save-state {
  min-height: 14px;
  margin: 6px 0 0;
  color: #8A5A00;
  font-size: 10px;
  font-weight: 600;
}

.group-manager-panel {
  max-width: 980px;
  padding: 14px 16px 16px;
}

.group-manager-panel .panel-heading { align-items: flex-start; }
.group-manager-panel .panel-heading p { max-width: 420px; text-align: left; }

.group-create-form {
  grid-template-columns: auto minmax(180px, 280px) auto;
  max-width: 560px;
}

.group-workspace {
  display: grid;
  grid-template-columns: minmax(170px, 240px) minmax(320px, 1fr);
  gap: 14px;
  margin-top: 14px;
}

.group-list-pane,
.group-detail-pane {
  min-width: 0;
  border: 1px solid var(--rule);
  background: #FAFAFB;
}

.group-list-pane {
  display: grid;
  align-content: start;
  gap: 4px;
  padding: 8px;
}

.group-detail-pane { padding: 12px; }

.group-manage-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  min-height: 34px;
  padding: 8px 9px;
  border: 1px solid transparent;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  font-size: 12px;
  text-align: left;
}

.group-manage-card:hover { border-color: var(--rule-strong); background: var(--surface); }
.group-manage-card.is-active { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.group-manage-card span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.group-manage-card small { flex: 0 0 auto; color: var(--muted); font-size: 10px; }

.group-title-row,
.assign-search-form {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) auto auto;
  gap: 8px;
  align-items: end;
}

.assign-search-form {
  grid-template-columns: minmax(220px, 1fr) auto;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}

.assigned-block {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}

.assigned-engineer-chips {
  display: grid;
  gap: 6px;
  padding: 0;
  margin: 8px 0 0;
  list-style: none;
}

.assigned-engineer-chips li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 30px;
  padding: 6px 8px;
  border: 1px solid var(--rule);
  background: var(--surface);
  font-size: 11px;
}

@media (max-width: 760px) {
  .group-workspace,
  .group-title-row,
  .assign-search-form,
  .group-create-form { grid-template-columns: 1fr; }
  .group-manager-panel { max-width: none; }
}