:root {
  color-scheme: light;
  --bg: #f7f7f4;
  --surface: #ffffff;
  --text: #20201d;
  --muted: #6c6a61;
  --line: #ddd9cf;
  --primary: #0f766e;
  --primary-dark: #115e59;
  --danger: #b42318;
  --accent: #c2410c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
select {
  font: inherit;
}

button,
a.link-button {
  min-height: 44px;
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  font-weight: 700;
}

.screen {
  min-height: 100vh;
  padding: 18px 14px 92px;
}

.page,
.login-panel {
  max-width: 680px;
  margin: 0 auto;
}

.page-header h1,
.login-panel h1 {
  margin: 0 0 6px;
  font-size: 30px;
}

.muted {
  margin: 0 0 16px;
  color: var(--muted);
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  margin: 12px 0;
}

.person-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.person-button {
  height: 92px;
  background: var(--surface);
  border: 1px solid var(--line);
  font-size: 24px;
}

.pass-form {
  margin-top: 18px;
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.field input,
.field select {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: #fff;
  color: var(--text);
  font-size: 16px;
}

.check-field {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  margin: 8px 0 14px;
  font-weight: 700;
}

.check-field input {
  width: 22px;
  height: 22px;
}

.primary,
a.primary {
  background: var(--primary);
  color: #fff;
  text-align: center;
  text-decoration: none;
}

.primary:active {
  background: var(--primary-dark);
}

.secondary {
  background: #ece9df;
  color: var(--text);
}

.danger {
  background: var(--danger);
  color: #fff;
}

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

.chips {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.chip {
  min-height: 38px;
  padding: 6px;
  background: #e8f5f3;
  color: var(--primary-dark);
}

.share-label {
  color: var(--text);
}

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

.month-row {
  display: grid;
  grid-template-columns: 44px 1fr 44px;
  align-items: center;
  gap: 10px;
}

.month-label {
  text-align: center;
  font-size: 18px;
}

.icon-button {
  background: #ece9df;
}

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

.settlement-lead h2 {
  margin: 0 0 8px;
  font-size: 21px;
  line-height: 1.45;
}

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

.summary-item {
  display: grid;
  gap: 4px;
  min-height: 66px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: #fafaf7;
}

.summary-item span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.payment-bars {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.bar-row {
  display: grid;
  grid-template-columns: 32px 1fr 92px;
  align-items: center;
  gap: 8px;
}

.bar-track {
  height: 12px;
  overflow: hidden;
  border-radius: 999px;
  background: #ece9df;
}

.bar-fill {
  height: 100%;
  min-width: 2px;
}

.bar-husband {
  background: var(--primary);
}

.bar-wife {
  background: var(--accent);
}

.data-table {
  display: grid;
  border-top: 1px solid var(--line);
}

.data-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.history-list {
  display: grid;
  gap: 10px;
}

.history-head {
  display: grid;
  gap: 6px;
  width: 100%;
  min-height: 62px;
  background: #fafaf7;
  color: var(--text);
  text-align: left;
}

.settlement-detail {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.date-heading {
  margin: 16px 0 4px;
  color: var(--muted);
  font-size: 15px;
}

.expense-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 12px;
  width: 100%;
  min-height: 68px;
  background: var(--surface);
  border: 1px solid var(--line);
  text-align: left;
}

.merchant {
  grid-column: 1;
  font-weight: 800;
}

.meta {
  grid-column: 1;
  color: var(--muted);
  font-size: 13px;
}

.amount {
  grid-column: 2;
  grid-row: 1 / 3;
  align-self: center;
}

.empty,
.warning {
  padding: 14px;
  border-radius: 8px;
  background: #fff7ed;
  color: var(--accent);
}

.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
}

.bottom-nav a {
  min-height: 62px;
  display: grid;
  place-items: center;
  color: var(--muted);
  text-decoration: none;
  font-weight: 800;
}

.bottom-nav a.active {
  color: var(--primary);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 10;
  overflow: auto;
  padding: 16px;
  background: rgba(0, 0, 0, 0.38);
}

.modal {
  max-width: 680px;
  margin: 20px auto 80px;
}

.toast {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 78px;
  z-index: 20;
  transform: translateY(120px);
  transition: transform 0.18s ease;
  border-radius: 8px;
  padding: 12px 14px;
  background: #20201d;
  color: #fff;
  text-align: center;
}

.toast.show {
  transform: translateY(0);
}

@media (min-width: 700px) {
  .actions {
    grid-template-columns: repeat(3, 1fr);
  }
}