:root {
  --bg: #f3f6f5;
  --surface: #ffffff;
  --surface-soft: #f7faf9;
  --ink: #182421;
  --muted: #66736f;
  --line: #dfe8e4;
  --brand: #087a63;
  --brand-soft: #e5f5ef;
  --join: #16866c;
  --join-soft: #e9f7f2;
  --leave: #d85845;
  --leave-soft: #fff0ec;
  --total: #2767a9;
  --total-soft: #eaf2fc;
  --warning: #a46c09;
  --warning-soft: #fff7df;
  --danger: #b83e32;
  --danger-soft: #fff0ee;
  --shadow: 0 16px 42px rgba(35, 63, 54, 0.08);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% -6%, rgba(28, 145, 112, 0.12), transparent 30rem),
    radial-gradient(circle at 95% 4%, rgba(39, 103, 169, 0.08), transparent 28rem),
    var(--bg);
  font-family: "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

button,
select {
  font: inherit;
}

.app-shell {
  width: min(1440px, calc(100% - 48px));
  margin: 0 auto;
  padding: 38px 0 24px;
}

.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 22px;
}

.eyebrow,
.panel-kicker {
  margin: 0 0 6px;
  color: var(--brand);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 5px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.045em;
}

h2 {
  margin-bottom: 0;
  font-size: 19px;
  line-height: 1.3;
}

.subtitle {
  margin-bottom: 0;
  color: var(--muted);
}

.header-meta {
  display: grid;
  min-width: 250px;
  gap: 1px;
  padding: 14px 18px;
  border: 1px solid rgba(223, 232, 228, 0.9);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 10px 30px rgba(35, 63, 54, 0.04);
  text-align: right;
  backdrop-filter: blur(8px);
}

.header-meta strong {
  font-size: 14px;
}

.header-meta span:last-child {
  color: var(--muted);
  font-size: 12px;
}

.meta-label {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.status-banner {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  padding: 13px 17px;
  border: 1px solid #cfe6dd;
  border-radius: 14px;
  background: var(--brand-soft);
}

.status-banner strong {
  display: block;
  font-size: 14px;
}

.status-banner p {
  margin: 1px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.status-indicator {
  width: 9px;
  height: 9px;
  margin-top: 6px;
  border-radius: 50%;
  background: var(--join);
  box-shadow: 0 0 0 4px rgba(22, 134, 108, 0.13);
  flex: 0 0 auto;
}

.status-banner.is-warning {
  border-color: #efd8a4;
  background: var(--warning-soft);
}

.status-banner.is-warning .status-indicator {
  background: var(--warning);
  box-shadow: 0 0 0 4px rgba(164, 108, 9, 0.12);
}

.status-banner.is-error {
  border-color: #efc5bf;
  background: var(--danger-soft);
}

.status-banner.is-error .status-indicator {
  background: var(--danger);
  box-shadow: 0 0 0 4px rgba(184, 62, 50, 0.12);
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 22px 0;
}

.field-label {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.field-label select {
  min-width: 0;
  max-width: 100%;
}

select {
  min-height: 39px;
  padding: 7px 36px 7px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  background: var(--surface);
}

select:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(8, 122, 99, 0.22);
  outline-offset: 2px;
}

.range-control {
  display: inline-flex;
  gap: 3px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.75);
}

.range-button {
  padding: 6px 11px;
  border: 0;
  border-radius: 8px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
}

.range-button:hover {
  color: var(--ink);
  background: var(--surface-soft);
}

.range-button.is-active {
  color: #fff;
  background: var(--brand);
}

.selected-date-label {
  margin-left: auto;
  color: var(--muted);
  font-size: 13px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.metric-card,
.panel,
.pending-panel {
  border: 1px solid rgba(223, 232, 228, 0.95);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.metric-card {
  position: relative;
  min-height: 172px;
  padding: 22px 23px;
  overflow: hidden;
}

.metric-card::after {
  position: absolute;
  right: -40px;
  bottom: -70px;
  width: 170px;
  height: 170px;
  border-radius: 50%;
  background: currentColor;
  content: "";
  opacity: 0.045;
}

.metric-card--join {
  color: var(--join);
}

.metric-card--leave {
  color: var(--leave);
}

.metric-card--total {
  color: var(--total);
}

.metric-heading {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.metric-icon {
  display: inline-grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 9px;
  color: currentColor;
  background: color-mix(in srgb, currentColor 10%, white);
  font-size: 16px;
  font-weight: 700;
}

.metric-card--join .metric-icon {
  color: var(--join);
  background: var(--join-soft);
}

.metric-card--leave .metric-icon {
  color: var(--leave);
  background: var(--leave-soft);
}

.metric-card--total .metric-icon {
  color: var(--total);
  background: var(--total-soft);
}

.metric-value {
  display: block;
  margin: 20px 0 5px;
  color: var(--ink);
  font-family: "Bahnschrift", "Segoe UI", sans-serif;
  font-size: clamp(38px, 5vw, 54px);
  font-weight: 650;
  line-height: 1;
  letter-spacing: -0.045em;
  font-variant-numeric: tabular-nums;
}

.metric-context {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 12px;
}

.chart-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(340px, 0.8fr);
  gap: 16px;
  margin-top: 16px;
}

.panel {
  padding: 22px 23px;
}

.panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 17px;
}

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

.chart-canvas {
  min-height: 270px;
  overflow-x: auto;
}

.chart-canvas svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.chart-grid-line {
  stroke: var(--line);
  stroke-width: 1;
  stroke-dasharray: 3 5;
}

.chart-axis-text {
  fill: #7b8984;
  font-family: "Microsoft YaHei UI", "Segoe UI", sans-serif;
  font-size: 11px;
}

.chart-value-text {
  fill: var(--ink);
  font-family: "Bahnschrift", "Segoe UI", sans-serif;
  font-size: 12px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.chart-line {
  fill: none;
  stroke: var(--total);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 3;
}

.chart-point {
  fill: var(--surface);
  stroke: var(--total);
  stroke-width: 2;
}

.chart-bar-join {
  fill: var(--join);
}

.chart-bar-leave {
  fill: var(--leave);
  opacity: 0.82;
}

.chart-empty {
  display: grid;
  min-height: 250px;
  place-items: center;
  border: 1px dashed var(--line);
  border-radius: 12px;
  color: var(--muted);
  background: var(--surface-soft);
  text-align: center;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 5px;
}

.legend-key {
  color: var(--muted);
  font-size: 11px;
}

.legend-key::before {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 5px;
  border-radius: 3px;
  background: currentColor;
  content: "";
}

.legend-key--total {
  color: var(--total);
}

.legend-key--join {
  color: var(--join);
}

.legend-key--leave {
  color: var(--leave);
}

.table-panel {
  margin-top: 16px;
}

.table-scroll {
  overflow-x: auto;
}

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

th,
td {
  padding: 12px 14px;
  border-top: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}

th {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

tbody tr:hover {
  background: var(--surface-soft);
}

.numeric {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.quality-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 99px;
  color: var(--join);
  background: var(--join-soft);
  font-size: 11px;
}

.quality-badge.is-warning {
  color: var(--warning);
  background: var(--warning-soft);
}

.quality-badge.is-error {
  color: var(--danger);
  background: var(--danger-soft);
}

.empty-cell {
  height: 110px;
  color: var(--muted);
  text-align: center;
}

.pending-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 16px;
  padding: 20px 23px;
  border-color: #efd8a4;
  background: var(--warning-soft);
  box-shadow: none;
}

.pending-panel[hidden] {
  display: none;
}

.pending-panel h2 {
  margin-bottom: 3px;
  font-size: 17px;
}

.pending-panel p:last-child {
  margin-bottom: 0;
  color: #75531a;
  font-size: 13px;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 3px 0;
  color: var(--muted);
  font-size: 11px;
}

.noscript {
  padding: 18px;
  color: var(--danger);
  background: var(--danger-soft);
  text-align: center;
}

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

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

  .metric-card--total {
    grid-column: 1 / -1;
  }
}

@media (max-width: 680px) {
  .app-shell {
    width: min(100% - 24px, 1440px);
    padding-top: 22px;
  }

  .page-header,
  .toolbar,
  footer {
    align-items: stretch;
    flex-direction: column;
  }

  .header-meta {
    min-width: 0;
    text-align: left;
  }

  .toolbar {
    gap: 10px;
  }

  .field-label {
    justify-content: space-between;
  }

  .selected-date-label {
    margin-left: 0;
  }

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

  .metric-card--total {
    grid-column: auto;
  }

  .panel {
    padding: 18px 16px;
  }

  .pending-panel {
    align-items: flex-start;
    flex-direction: column;
  }

  footer {
    gap: 5px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .metric-card {
    transition: transform 180ms ease, box-shadow 180ms ease;
  }

  .metric-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 48px rgba(35, 63, 54, 0.12);
  }
}