:root {
  color-scheme: light;
  --ink: #111318;
  --muted: #6b7280;
  --subtle: #8a919d;
  --paper: #f5f5f7;
  --panel: #ffffff;
  --field: #f2f3f5;
  --line: #e4e6eb;
  --green: #1f8a5f;
  --green-soft: #e9f6ef;
  --blue: #2677c9;
  --amber: #d28626;
  --red: #d34c3f;
  --shadow: 0 10px 28px rgba(17, 19, 24, 0.07);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Microsoft YaHei UI", sans-serif;
  font-size: 14px;
  background: var(--paper);
}

button,
input,
select {
  font: inherit;
}

button {
  -webkit-tap-highlight-color: transparent;
}

.app-shell {
  width: min(1120px, calc(100% - 28px));
  margin: 0 auto;
  padding: 18px 0 34px;
}

.topbar,
.panel-heading,
.workbench,
.toolbar,
.entry-amount {
  display: flex;
  align-items: center;
}

.topbar {
  justify-content: space-between;
  gap: 18px;
  padding: 10px 0 14px;
}

.topbar > div:first-child {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--green);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 4px;
  font-size: clamp(30px, 5vw, 54px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 800;
}

.subhead {
  max-width: 500px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.top-actions {
  display: grid;
  justify-items: end;
  gap: 8px;
  flex: 0 0 auto;
}

.month-control {
  display: grid;
  grid-template-columns: 38px minmax(142px, 172px) 38px;
  gap: 6px;
}

.month-control input,
label input,
label select,
.budget-control input,
.toolbar select {
  width: 100%;
  min-height: 40px;
  border: 0;
  border-radius: 8px;
  padding: 9px 11px;
  color: var(--ink);
  background: var(--field);
  outline: none;
}

.month-control input:focus,
label input:focus,
label select:focus,
.budget-control input:focus,
.toolbar select:focus {
  box-shadow: 0 0 0 3px rgba(31, 138, 95, 0.16);
}

.icon-button,
.ghost-button,
.primary-button,
.entry-amount button {
  border: 0;
  cursor: pointer;
}

.icon-button {
  min-height: 40px;
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--line);
  font-size: 24px;
  line-height: 1;
}

.summary-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 12px;
}

.summary-strip article,
.entry-panel,
.analysis-panel,
.ledger-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.summary-strip article {
  padding: 12px;
}

.summary-strip span,
label,
legend,
.budget-control,
.ledger-item span {
  color: var(--muted);
  font-size: 12px;
}

.summary-strip strong {
  display: block;
  margin-top: 4px;
  font-size: 20px;
  font-weight: 850;
  letter-spacing: 0;
}

.workbench {
  align-items: stretch;
  gap: 12px;
}

.entry-panel,
.analysis-panel,
.ledger-panel {
  padding: 16px;
}

.entry-panel {
  flex: 0 0 330px;
}

.analysis-panel {
  flex: 1;
  min-width: 0;
}

.panel-heading {
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.entry-panel label,
.budget-control {
  display: grid;
  gap: 6px;
  margin-bottom: 10px;
  font-weight: 700;
}

fieldset {
  margin: 0 0 10px;
  padding: 0;
  border: 0;
}

legend {
  margin-bottom: 6px;
  font-weight: 700;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.segmented label {
  margin: 0;
}

.segmented input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.segmented span {
  display: grid;
  min-height: 40px;
  place-items: center;
  border-radius: 8px;
  background: var(--field);
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.segmented input:checked + span {
  background: var(--green);
  color: #fff;
}

.primary-button,
.ghost-button {
  min-height: 40px;
  border-radius: 8px;
  padding: 0 14px;
  font-size: 13px;
  font-weight: 800;
}

.primary-button {
  width: 100%;
  min-height: 44px;
  background: var(--ink);
  color: #fff;
}

.ghost-button {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
}

.install-button {
  border-color: transparent;
  background: var(--green);
  color: #fff;
}

.insight-card {
  min-height: 66px;
  border-radius: 8px;
  padding: 12px;
  background: var(--green-soft);
  color: #1c5f44;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.55;
}

.chart-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 12px;
  margin-top: 12px;
}

.chart-box {
  min-height: 194px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fbfbfd;
}

.bar-chart {
  display: grid;
  gap: 9px;
}

.bar-row {
  display: grid;
  grid-template-columns: 58px minmax(70px, 1fr) 76px;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}

.bar-track {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: #e6e9ef;
}

.bar-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--green);
}

.money {
  color: var(--subtle);
  text-align: right;
  white-space: nowrap;
}

.ledger-panel {
  margin-top: 12px;
}

.toolbar {
  justify-content: flex-end;
  gap: 8px;
}

.toolbar select {
  min-width: 122px;
}

.ledger-list {
  display: grid;
  gap: 8px;
}

.ledger-item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 12px;
  background: #fbfbfd;
}

.ledger-item strong,
.ledger-item span {
  display: block;
}

.ledger-item strong {
  margin-bottom: 3px;
  font-size: 14px;
}

.entry-amount {
  gap: 8px;
  white-space: nowrap;
}

.entry-amount b {
  color: var(--red);
  font-size: 14px;
}

.entry-amount button {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: #f5e4e1;
  color: var(--red);
  font-size: 18px;
}

.empty-state {
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 18px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

@media (max-width: 860px) {
  .topbar,
  .workbench,
  .ledger-item {
    flex-direction: column;
    align-items: stretch;
  }

  .top-actions {
    justify-items: stretch;
  }

  .summary-strip,
  .chart-grid {
    grid-template-columns: 1fr 1fr;
  }

  .entry-panel {
    flex-basis: auto;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 13px;
  }

  .app-shell {
    width: 100%;
    padding: max(10px, env(safe-area-inset-top)) 10px max(18px, env(safe-area-inset-bottom));
  }

  .topbar {
    gap: 10px;
    padding: 6px 2px 10px;
  }

  h1 {
    font-size: 30px;
  }

  h2 {
    font-size: 16px;
  }

  h3 {
    font-size: 13px;
  }

  .subhead {
    max-width: 310px;
    font-size: 12px;
  }

  .month-control {
    grid-template-columns: 38px 1fr 38px;
  }

  .summary-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 10px;
  }

  .summary-strip article {
    padding: 10px;
  }

  .summary-strip strong {
    font-size: 18px;
  }

  .workbench {
    gap: 10px;
  }

  .entry-panel,
  .analysis-panel,
  .ledger-panel {
    padding: 12px;
  }

  .panel-heading {
    margin-bottom: 10px;
  }

  .entry-panel label,
  .budget-control {
    margin-bottom: 9px;
  }

  .chart-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .chart-box {
    min-height: auto;
  }

  .bar-row {
    grid-template-columns: 50px minmax(80px, 1fr) 70px;
    gap: 6px;
  }

  .toolbar {
    display: grid;
    grid-template-columns: 1fr auto;
  }

  .ledger-item {
    flex-direction: row;
    align-items: center;
    padding: 10px;
  }
}

@media (max-width: 360px) {
  .app-shell {
    padding-left: 8px;
    padding-right: 8px;
  }

  .segmented span,
  .primary-button,
  .ghost-button,
  .month-control input,
  label input,
  label select,
  .budget-control input,
  .toolbar select {
    font-size: 12px;
  }

  .bar-row {
    grid-template-columns: 46px 1fr;
  }

  .bar-row .money {
    grid-column: 2;
    text-align: left;
  }
}