:root {
  color-scheme: light;
  --ink: #17202c;
  --muted: #637083;
  --line: #d5dce5;
  --panel: #f8fafc;
  --panel-strong: #eef3f8;
  --accent: #00747c;
  --accent-dark: #07575d;
  --good: #28705f;
  --warn: #8a5b00;
  --white: #ffffff;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100svh;
  color: var(--ink);
  background: #e2e7ee;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.hidden {
  display: none !important;
}

.app {
  min-height: 100svh;
  display: grid;
  grid-template-rows: auto 1fr;
}

.topbar {
  min-height: 76px;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 24px;
  line-height: 1.1;
  letter-spacing: 0;
}

h2 {
  font-size: 14px;
  line-height: 1.2;
  letter-spacing: 0;
}

.topbar p,
#chartSubtitle {
  margin-top: 5px;
  color: var(--muted);
  font-size: 13px;
}

.auth-page {
  min-height: 100svh;
  padding: 20px;
  display: grid;
  place-items: center;
}

.auth-panel {
  width: min(100%, 420px);
  padding: 18px;
  display: grid;
  gap: 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.auth-panel > span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.auth-form {
  display: grid;
  gap: 12px;
}

.auth-status {
  min-height: 18px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
}

.stats {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.stats span,
.metric {
  min-width: 104px;
  padding: 8px 10px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  font-size: 12px;
}

.stats strong,
.metric strong {
  display: block;
  color: var(--ink);
  font-size: 18px;
  line-height: 1.15;
}

.layout {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(280px, 340px) 1fr;
}

.filters {
  min-height: 0;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: auto;
  background: #f3f6f9;
  border-right: 1px solid var(--line);
}

.filters section,
.table-panel {
  padding: 12px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.filters section {
  display: grid;
  gap: 10px;
}

.segments {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 4px;
  padding: 3px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.segments.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.segments button {
  min-height: 34px;
  border: 0;
  border-radius: 6px;
  color: var(--muted);
  background: transparent;
  font-size: 12px;
  font-weight: 700;
}

.segments button.active {
  color: var(--white);
  background: var(--accent);
}

.field {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

select,
input[type="search"] {
  width: 100%;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--white);
  color: var(--ink);
  padding: 8px 10px;
}

input[type="text"],
input[type="date"],
textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--white);
  color: var(--ink);
  padding: 9px 11px;
}

textarea {
  min-height: 76px;
  resize: vertical;
}

.range-control,
.filters section.compare-panel {
  display: none;
}

.range-control.active,
.filters section.compare-panel.active {
  display: grid;
  gap: 8px;
}

.label-row,
.table-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.label-row span,
.table-head span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.link-button {
  border: 0;
  padding: 0;
  color: var(--accent-dark);
  background: transparent;
  font-size: 12px;
  font-weight: 800;
}

.checklist {
  max-height: 220px;
  overflow: auto;
  display: grid;
  gap: 4px;
  padding-right: 2px;
}

.checklist.tall {
  max-height: 270px;
}

.checklist.compact {
  max-height: 120px;
}

.check-row {
  min-height: 34px;
  display: grid;
  grid-template-columns: 18px 1fr auto;
  align-items: center;
  gap: 7px;
  padding: 6px 7px;
  border-radius: 7px;
  color: var(--ink);
  font-size: 13px;
}

.toggle-row {
  min-height: 36px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.toggle-row input {
  width: 17px;
  height: 17px;
  accent-color: var(--accent);
}

.check-row:hover {
  background: var(--panel);
}

.check-row input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.check-row small {
  color: var(--muted);
  font-size: 11px;
}

.workspace {
  min-width: 0;
  min-height: 0;
  padding: 16px;
  display: grid;
  grid-template-rows: auto minmax(360px, 1fr) auto auto minmax(190px, 24vh);
  gap: 12px;
  overflow: hidden;
}

.toolbar {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

#chartTitle {
  font-size: 20px;
}

.legend {
  max-width: 55%;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 7px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
}

.swatch {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.chart-wrap {
  position: relative;
  min-height: 360px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

#chart {
  width: 100%;
  height: 100%;
  min-height: 360px;
  display: block;
}

.empty-state {
  position: absolute;
  inset: 0;
  display: none;
  place-items: center;
  padding: 24px;
  color: var(--muted);
  text-align: center;
  font-weight: 700;
}

.empty-state.active {
  display: grid;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(120px, 1fr));
  gap: 10px;
}

.metric {
  min-width: 0;
}

.improvement-panel {
  min-height: 72px;
  padding: 12px;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 8px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.improvement-list {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 2px;
}

.improvement-item {
  min-width: 190px;
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
  font-size: 12px;
}

.improvement-item strong {
  display: block;
  margin-bottom: 2px;
  color: var(--ink);
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.improvement-item span {
  color: var(--muted);
}

.improvement-item.improved span {
  color: var(--good);
}

.improvement-item.regressed span {
  color: var(--warn);
}

.table-panel {
  min-height: 0;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 10px;
  overflow: hidden;
}

.table-scroll {
  min-height: 0;
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th,
td {
  padding: 8px 9px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  position: sticky;
  top: 0;
  background: var(--white);
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  z-index: 1;
}

.axis {
  stroke: #8d99a8;
  stroke-width: 1;
}

.grid-line {
  stroke: #e3e8ef;
  stroke-width: 1;
}

.tick-label {
  fill: #637083;
  font-size: 11px;
}

.series-line {
  fill: none;
  stroke-width: 2.5;
}

.trend-line {
  fill: none;
  stroke-width: 2;
  stroke-dasharray: 7 5;
  opacity: 0.72;
}

.point {
  stroke: #ffffff;
  stroke-width: 2;
}

.point-label {
  fill: var(--ink);
  font-size: 11px;
  paint-order: stroke;
  stroke: #ffffff;
  stroke-width: 3px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--accent-dark);
  background: var(--white);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
}

button.nav-link {
  font: inherit;
}

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

.attendance-app {
  min-height: 100svh;
  background: #eef2f6;
}

.attendance-layout {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 16px;
  display: grid;
  gap: 12px;
}

.attendance-controls,
.attendance-summary,
.attendance-list-panel {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.attendance-controls {
  padding: 12px;
  display: grid;
  grid-template-columns: minmax(170px, 1fr) 160px minmax(260px, 2fr) auto;
  align-items: end;
  gap: 10px;
}

.attendance-actions {
  display: flex;
  gap: 8px;
}

.primary-button,
.secondary-button,
.danger-button {
  min-height: 44px;
  padding: 10px 14px;
  border-radius: 7px;
  font-weight: 800;
}

.primary-button {
  border: 1px solid var(--accent);
  color: var(--white);
  background: var(--accent);
}

.secondary-button {
  border: 1px solid var(--line);
  color: var(--accent-dark);
  background: var(--white);
}

.danger-button {
  border: 1px solid #b43c3c;
  color: #8c2222;
  background: #fff4f4;
}

.attendance-summary {
  padding: 10px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.present-metric strong {
  color: var(--good);
}

.attendance-main {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 12px;
}

.attendance-list-panel {
  min-height: 280px;
  padding: 12px;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 10px;
}

.roster-list,
.recent-list {
  min-height: 0;
  display: grid;
  gap: 7px;
  align-content: start;
  overflow: auto;
}

.recent-session-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 7px;
  align-items: stretch;
}

.recent-session-item .danger-button {
  min-width: 76px;
}

.roster-row {
  min-height: 54px;
  display: grid;
  grid-template-columns: 24px 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.roster-row.present {
  border-color: #9cc9bd;
  background: #effaf6;
}

.roster-row.has-note {
  border-color: #d6c180;
}

.roster-row input,
.confirm-row input {
  width: 20px;
  height: 20px;
  accent-color: var(--accent);
}

.roster-row span {
  min-width: 0;
  color: var(--ink);
  font-size: 16px;
  font-weight: 800;
}

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

.recent-row {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: inherit;
  text-align: left;
}

.recent-row strong,
.recent-row span {
  display: block;
}

.recent-row strong {
  color: var(--ink);
  font-size: 14px;
}

.recent-row span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.match-modal {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  padding: 18px;
  background: rgba(23, 32, 44, 0.44);
  z-index: 20;
  overflow: auto;
}

.match-modal.active {
  display: grid;
}

.match-dialog {
  width: min(460px, 100%);
  padding: 20px;
  display: grid;
  gap: 14px;
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 22px 70px rgba(23, 32, 44, 0.25);
  animation: match-pop 140ms ease-out;
}

.match-dialog > span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.match-dialog h2 {
  font-size: 34px;
  line-height: 1.05;
}

.confirm-row {
  min-height: 52px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 800;
}

.match-alternates {
  display: grid;
  gap: 7px;
}

.match-alternates:empty {
  display: none;
}

.match-alternates button {
  min-height: 40px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--ink);
  background: var(--panel);
  font-weight: 800;
}

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

.modal-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.modal-actions.single {
  grid-template-columns: 1fr;
}

.review-dialog {
  width: min(720px, 100%);
  height: min(760px, calc(100svh - 36px));
  min-height: 0;
  grid-template-rows: auto auto auto 1fr auto;
  overflow: hidden;
}

.submit-confirm-dialog {
  width: min(420px, 100%);
}

.review-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.review-stat {
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
}

.review-stat strong,
.review-stat span {
  display: block;
}

.review-stat strong {
  color: var(--ink);
  font-size: 22px;
  line-height: 1.05;
}

.review-stat span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.review-stat.present strong {
  color: var(--good);
}

.review-stat.absent strong {
  color: var(--warn);
}

.review-list {
  min-height: 0;
  max-height: 100%;
  display: grid;
  gap: 7px;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-right: 2px;
}

.review-row {
  min-height: 48px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
}

.review-row.present {
  border-color: #9cc9bd;
  background: #effaf6;
}

.review-row strong,
.review-row span {
  display: block;
}

.review-row-main > strong {
  color: var(--ink);
  font-size: 14px;
}

.review-row span {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 12px;
}

@keyframes match-pop {
  from {
    opacity: 0;
    transform: scale(0.88);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .filters {
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow: visible;
  }

  .workspace {
    overflow: visible;
    grid-template-rows: auto minmax(330px, auto) auto auto minmax(220px, auto);
  }

  .attendance-controls,
  .attendance-main {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .topbar,
  .toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .stats,
  .legend {
    max-width: none;
    justify-content: flex-start;
  }

  .filters {
    grid-template-columns: 1fr;
  }

  .segments {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .workspace {
    padding: 12px;
  }

  .attendance-layout {
    padding: 12px;
  }

  .attendance-topbar {
    flex-direction: row;
    align-items: center;
  }

  .attendance-summary {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .attendance-summary .metric {
    padding: 8px;
  }

  .roster-row {
    grid-template-columns: 24px 1fr;
  }

  .roster-row small {
    grid-column: 2;
  }

  .recent-session-item {
    grid-template-columns: 1fr;
  }

  .match-dialog h2 {
    font-size: 28px;
  }
}