:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --panel: #ffffff;
  --ink: #15202b;
  --muted: #6b7280;
  --line: #d9e1ec;
  --blue: #155e9f;
  --blue-soft: #e6f0fa;
  --green: #16804a;
  --green-soft: #dff4e9;
  --amber: #a76207;
  --amber-soft: #fff2cf;
  --red: #b42318;
  --shadow: 0 16px 40px rgba(20, 40, 70, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 0;
  border-radius: 8px;
  background: var(--blue);
  color: #fff;
  min-height: 42px;
  padding: 0 16px;
  font-weight: 700;
}

button.ghost {
  background: #fff;
  color: var(--blue);
  border: 1px solid var(--line);
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 42px;
  padding: 8px 10px;
  background: #fff;
  color: var(--ink);
}

textarea {
  resize: vertical;
}

.hidden {
  display: none !important;
}

.login-screen {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 20px;
}

.login-card {
  width: min(440px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.login-card h1,
.topbar h1,
.editor h2 {
  margin: 0;
}

.eyebrow {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: 0;
  text-transform: uppercase;
}

.muted,
.error {
  color: var(--muted);
}

.error {
  color: var(--red);
  min-height: 20px;
}

.loading-text {
  min-height: 20px;
  margin: 0;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
}

button:disabled,
input:disabled {
  opacity: 0.65;
  cursor: wait;
}

.login-form {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.app {
  width: min(1240px, 100%);
  margin: 0 auto;
  padding: 18px 16px 84px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
}

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

.top-actions input {
  width: 150px;
}

.month-picker {
  position: relative;
}

.month-alert {
  position: absolute;
  right: 8px;
  top: -8px;
  min-width: 18px;
  height: 18px;
  padding: 0 6px;
  border-radius: 999px;
  background: #dc2626;
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 900;
  box-shadow: 0 0 0 2px #fff;
}

.month-debt-panel {
  margin: -4px 0 12px;
  padding: 10px 12px;
  border: 1px solid #fecaca;
  background: #fff1f2;
  color: #b42318;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 800;
}

.month-debt-panel button {
  min-height: 30px;
  margin: 4px 4px 0 0;
  padding: 0 10px;
  background: #fff;
  color: #b42318;
  border: 1px solid #fecaca;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}

.summary-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
}

.summary-card:hover,
.summary-card.active {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-soft);
}

.summary-card span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.summary-card strong {
  display: block;
  margin-top: 6px;
  font-size: 24px;
}

.tabs {
  display: flex;
  gap: 8px;
  margin: 12px 0;
  overflow-x: auto;
}

.tab {
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--line);
  white-space: nowrap;
}

.tab.active {
  background: var(--blue);
  color: #fff;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.toolbar,
.receipt-toolbar,
.table-actions {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.toolbar input {
  flex: 1;
}

.toolbar select {
  width: 130px;
}

.unit-groups {
  display: grid;
  gap: 14px;
}

.floor-section h2 {
  font-size: 16px;
  margin: 0 0 8px;
}

.unit-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 10px;
}

.unit-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  display: grid;
  gap: 8px;
}

.unit-card header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.unit-card h3 {
  margin: 0;
  font-size: 18px;
}

.status {
  border-radius: 999px;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 800;
}

.status.unpaid {
  background: var(--amber-soft);
  color: var(--amber);
}

.status.paid {
  background: var(--green-soft);
  color: var(--green);
}

.status.partial {
  background: var(--blue-soft);
  color: var(--blue);
}

.status.neutral {
  background: #f3f4f6;
  color: #6b7280;
}

.rent-state {
  border-radius: 999px;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 800;
  background: var(--green-soft);
  color: var(--green);
}

.rent-state.vacant {
  background: #f3f4f6;
  color: #6b7280;
}

.unit-card.vacant {
  background: #f8fafc;
}

.pill-row {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

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

.money-row div {
  background: #f8fafc;
  border-radius: 8px;
  padding: 8px;
}

.money-row span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.money-row strong {
  display: block;
  margin-top: 2px;
}

.meta-line {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.moveout-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-radius: 8px;
  padding: 8px;
  color: #9a3412;
  font-size: 12px;
  font-weight: 800;
}

.moveout-info strong {
  grid-column: 1 / -1;
  font-size: 16px;
  color: #166534;
}

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

.card-actions .paid-action {
  background: var(--green);
}

.card-actions .rent-action {
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--line);
}

.paid-action:disabled {
  background: #d1d5db;
  color: #6b7280;
}

.report-actions {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.report-grid {
  display: grid;
  gap: 12px;
}

.report-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
}

.report-card header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.report-card h3 {
  margin: 0;
}

.report-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.report-metrics div {
  background: #f8fafc;
  border-radius: 8px;
  padding: 10px;
}

.report-metrics span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.report-metrics strong {
  display: block;
  margin-top: 4px;
  font-size: 18px;
}

.receipt-card {
  background: #fff;
  border: 1px solid #d7e1ef;
  border-radius: 10px;
  padding: 34px 28px 28px;
  max-width: 720px;
  margin: 0 auto;
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.09);
}

.receipt-card h2 {
  text-align: center;
  margin: 0 0 24px;
  font-size: 28px;
}

.receipt-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 20px;
}

.receipt-line {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px dashed #ced9e8;
  padding: 13px 0;
  gap: 12px;
  min-height: 54px;
}

.receipt-line span {
  font-size: 18px;
  font-weight: 800;
}

.receipt-line strong {
  font-size: 19px;
  font-weight: 900;
  text-align: right;
}

.receipt-total {
  margin-top: 18px;
  padding: 18px 14px;
  background: var(--green-soft);
  color: var(--green);
  border-radius: 8px;
  font-size: 24px;
  font-weight: 900;
  display: flex;
  justify-content: space-between;
}

.receipt-note {
  margin: 20px 0 0;
  color: #6b7280;
  font-size: 18px;
  font-weight: 700;
}

.editor-dialog {
  border: 0;
  border-radius: 12px;
  width: min(760px, calc(100vw - 18px));
  padding: 0;
  box-shadow: var(--shadow);
}

.editor-dialog::backdrop {
  background: rgba(15, 23, 42, 0.42);
}

.editor {
  padding: 18px;
}

.editor header,
.editor footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.editor footer {
  margin-top: 14px;
  justify-content: flex-end;
}

.icon-button {
  width: 42px;
  padding: 0;
  border-radius: 8px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 14px;
}

.form-grid label {
  display: grid;
  gap: 5px;
  font-size: 13px;
  color: var(--muted);
}

.form-grid .full {
  grid-column: 1 / -1;
}

.form-grid input.locked {
  background: #f3f4f6;
  color: #6b7280;
}

.editor-tools {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

.editor-preview {
  margin-top: 12px;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%) translateY(80px);
  opacity: 0;
  background: var(--ink);
  color: #fff;
  border-radius: 999px;
  padding: 10px 16px;
  transition: 0.2s ease;
  z-index: 10;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 720px) {
  .app {
    padding: 14px 10px 96px;
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  .top-actions {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
  }

  .top-actions input {
    width: 100%;
  }

  .month-picker {
    min-width: 0;
  }

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

  .unit-list {
    grid-template-columns: 1fr;
  }

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

  .report-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .editor-dialog {
    width: 100vw;
    max-width: 100vw;
    border-radius: 12px 12px 0 0;
    margin: auto 0 0;
  }

  .editor footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .editor-tools {
    grid-template-columns: 1fr;
  }

  .receipt-toolbar,
  .toolbar {
    position: sticky;
    top: 0;
    z-index: 2;
    background: var(--bg);
    padding: 4px 0;
  }

  .receipt-meta,
  .receipt-lines,
  .receipt-grid {
    grid-template-columns: 1fr;
  }
}

@media print {
  body {
    background: #fff;
  }
  .topbar,
  .summary-grid,
  .tabs,
  .receipt-toolbar {
    display: none;
  }
  .app {
    padding: 0;
  }
  .view {
    display: none !important;
  }
  #receiptsView {
    display: block !important;
  }
  .receipt-card {
    box-shadow: none;
    border: 0;
  }
}