:root {
  --canvas: #edf8f5;
  --surface: #fbfffd;
  --surface-soft: #f0faf7;
  --ink: #203136;
  --muted: #61787d;
  --line: #cce3dd;
  --clay: #0f8d8f;
  --clay-dark: #0b6874;
  --sage: #51a76f;
  --gold: #f2b84b;
  --blue: #2e75b6;
  --danger: #d65b58;
  --weekend: #ff8a5b;
  --shadow: 0 14px 30px rgba(35, 94, 101, 0.1);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--canvas);
  color-scheme: light;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at top left, rgba(162, 220, 207, 0.35), transparent 34vw),
    linear-gradient(180deg, #edf8f5 0%, #f7fbf6 52%, #eef8fb 100%);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

button,
input,
select,
textarea {
  font: inherit;
  letter-spacing: 0;
}

button {
  min-height: 44px;
  padding: 10px 15px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: var(--clay);
  color: #fff;
  cursor: pointer;
  font-weight: 700;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

button:active:not(:disabled) {
  transform: translateY(1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.56;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(15, 141, 143, 0.26);
  outline-offset: 2px;
}

input,
select,
textarea {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink);
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

input:focus,
select:focus,
textarea:focus {
  border-color: rgba(15, 141, 143, 0.62);
  box-shadow: 0 0 0 3px rgba(15, 141, 143, 0.1);
}

input::placeholder,
textarea::placeholder {
  color: #8aa2a3;
}

textarea {
  resize: vertical;
}

input[type="date"],
input[type="month"] {
  display: block;
  max-width: 100%;
  min-width: 0;
  -webkit-appearance: none;
  appearance: none;
}

label {
  display: grid;
  gap: 6px;
  min-width: 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

h1,
h2 {
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-weight: 700;
  letter-spacing: 0;
}

.hidden {
  display: none !important;
}

.caption,
.login-mark {
  color: var(--clay);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.brand-seal {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid rgba(15, 141, 143, 0.42);
  border-radius: 8px;
  background: var(--surface);
  color: var(--clay);
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: 24px;
  font-weight: 700;
  box-shadow: 4px 4px 0 rgba(81, 167, 111, 0.14);
}

.brand-seal.small {
  width: 38px;
  height: 38px;
  border-radius: 6px;
  font-size: 20px;
  box-shadow: 3px 3px 0 rgba(81, 167, 111, 0.12);
}

.login-view {
  width: min(440px, 100%);
  min-height: 100vh;
  display: grid;
  align-content: center;
  gap: 18px;
  margin: 0 auto;
  padding: 32px 24px;
}

.login-brand,
.brand-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.login-view h1,
.topbar h1 {
  margin: 0;
  line-height: 1.08;
}

.login-view h1 {
  max-width: 8em;
  font-size: 42px;
}

.login-view p {
  margin: -6px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.login-form {
  display: grid;
  gap: 11px;
  margin-top: 10px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.app-view {
  width: min(100%, 760px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 15px 15px calc(96px + var(--safe-bottom));
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  padding: 2px 1px;
}

.topbar h1 {
  margin-top: 2px;
  font-size: 25px;
}

.icon-button {
  width: 42px;
  height: 42px;
  min-height: 42px;
  padding: 0;
  border-color: var(--line);
  background: var(--surface);
  color: var(--ink);
  font-size: 21px;
  font-weight: 500;
}

.tabs {
  position: fixed;
  right: auto;
  bottom: 0;
  left: 50%;
  z-index: 30;
  width: min(760px, 100vw);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  padding: 7px 8px calc(7px + var(--safe-bottom));
  transform: translateX(-50%);
  border-top: 1px solid var(--line);
  background: rgba(251, 255, 253, 0.96);
  box-shadow: 0 -8px 24px rgba(35, 94, 101, 0.08);
  backdrop-filter: blur(12px);
}

.tab {
  min-height: 55px;
  display: grid;
  place-items: center;
  gap: 3px;
  padding: 5px 3px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.tab span {
  display: block;
  font-size: 19px;
  line-height: 1;
}

.tab.active {
  background: transparent;
  color: var(--clay);
}

.tab.active span {
  transform: translateY(-1px);
}

.panel {
  display: none;
}

.panel.active {
  display: grid;
  gap: 17px;
  animation: panel-in 220ms ease both;
}

.page-heading {
  display: grid;
  gap: 4px;
  padding: 4px 1px 2px;
}

.page-heading h2 {
  margin: 0;
  font-size: 25px;
  line-height: 1.2;
}

.month-board {
  overflow: hidden;
  border: 1px solid rgba(15, 141, 143, 0.24);
  border-top: 5px solid var(--gold);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.board-main {
  padding: 20px 19px 19px;
  background: linear-gradient(135deg, #0b6874 0%, #0f8d8f 56%, #51a76f 100%);
  color: #f8fffb;
}

.board-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.board-main span,
.board-grid span {
  display: block;
  color: inherit;
  font-size: 12px;
}

.home-tag {
  padding: 4px 7px;
  border: 1px solid rgba(248, 255, 251, 0.42);
  border-radius: 4px;
  color: rgba(248, 255, 251, 0.86) !important;
}

.board-main strong {
  display: block;
  max-width: 100%;
  margin-top: 10px;
  overflow-wrap: anywhere;
  font-size: 38px;
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
}

.board-main small {
  display: block;
  margin-top: 9px;
  color: rgba(248, 255, 251, 0.72);
  font-size: 11px;
}

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

.board-grid div {
  min-width: 0;
  padding: 14px 15px;
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

.board-grid div:nth-child(even) {
  border-right: 0;
}

.board-grid div:last-child {
  grid-column: 1 / -1;
  border-right: 0;
}

.board-grid span {
  margin-bottom: 5px;
  color: var(--muted);
}

.board-grid strong {
  display: block;
  overflow-wrap: anywhere;
  font-size: 18px;
  font-variant-numeric: tabular-nums;
}

.quick-entry,
.filters,
.budget-panel {
  min-width: 0;
  overflow: hidden;
  padding: 15px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--clay);
  border-radius: 8px;
  background: var(--surface);
}

.quick-entry {
  display: grid;
  gap: 11px;
}

.budget-panel {
  display: grid;
  gap: 12px;
  border-left-color: var(--sage);
  background: var(--surface);
}

.budget-status {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.budget-track {
  height: 8px;
  overflow: hidden;
  border-radius: 4px;
  background: #d8ebe5;
}

.budget-fill {
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--sage);
  transition: width 360ms ease, background-color 160ms ease;
}

.budget-fill.over {
  background: var(--danger);
}

.budget-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 9px;
}

.tool-title {
  display: flex;
  align-items: center;
  gap: 9px;
}

.tool-title label {
  color: var(--ink);
  font-size: 14px;
}

.ai-mark {
  display: grid;
  width: 29px;
  height: 24px;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 5px;
  background: var(--blue);
  color: #fff;
  font-size: 10px;
  font-weight: 900;
}

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

.section-block {
  min-width: 0;
  padding: 17px 1px 3px;
  border-top: 1px solid var(--line);
}

.section-title {
  margin-bottom: 12px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 800;
}

.tool-title .section-title {
  margin: 0;
}

.section-title-row,
.draft-toolbar,
.draft-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.link-button {
  min-height: 32px;
  padding: 5px 8px;
  border-color: rgba(15, 141, 143, 0.24);
  background: transparent;
  color: var(--clay);
  font-size: 12px;
}

.record-list,
.draft-list,
.stat-list,
.chart-list {
  display: grid;
  gap: 8px;
}

.record,
.draft,
.stat-row {
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface);
}

.record {
  display: grid;
  gap: 8px;
}

.record-main,
.stat-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

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

.record-title {
  overflow-wrap: anywhere;
  font-size: 14px;
  font-weight: 800;
}

.record-meta {
  margin-top: 3px;
  overflow-wrap: anywhere;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.amount-expense,
.amount-income {
  flex: 0 0 auto;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}

.amount-expense {
  color: var(--clay);
}

.amount-income {
  color: var(--sage);
}

.record-actions {
  display: flex;
  justify-content: flex-end;
}

.day-group {
  overflow: hidden;
  border-top: 1px solid var(--line);
  background: transparent;
}

.day-group:last-child {
  border-bottom: 1px solid var(--line);
}

.day-group summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 13px 3px;
  cursor: pointer;
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
}

.day-group.weekend summary {
  color: var(--weekend);
}

.day-group.weekend summary strong {
  color: #b65b43;
}

.day-group summary span {
  display: flex;
  align-items: center;
  gap: 7px;
}

.day-group summary em {
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(255, 138, 91, 0.13);
  color: var(--weekend);
  font-size: 10px;
  font-style: normal;
  font-weight: 900;
}

.day-group summary strong {
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  text-align: right;
}

.day-group .record-list {
  padding: 0 0 11px;
}

.day-group .record {
  border-right: 0;
  border-left: 0;
  border-radius: 0;
  background: rgba(251, 255, 253, 0.68);
}

.day-group.weekend .record {
  border-color: rgba(255, 138, 91, 0.24);
  background: rgba(255, 249, 244, 0.72);
}

.draft-toolbar {
  padding: 10px 0 12px;
  border-bottom: 1px solid var(--line);
}

.draft {
  display: grid;
  gap: 13px;
  border-left: 4px solid var(--gold);
}

.check-line {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
}

.check-line input {
  width: 18px;
  height: 18px;
  max-width: none;
  accent-color: var(--clay);
}

.danger-button {
  min-height: 34px;
  padding: 6px 10px;
  border-color: rgba(214, 91, 88, 0.3);
  background: transparent;
  color: var(--danger);
  font-size: 12px;
}

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

.ghost-button {
  border-color: var(--line);
  background: var(--surface-soft);
  color: var(--ink);
}

.entry-form,
.draft form {
  min-width: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  overflow: hidden;
}

.entry-form .wide,
.draft form .wide {
  grid-column: 1 / -1;
}

.entry-form > *,
.draft form > *,
.filters > * {
  min-width: 0;
  max-width: 100%;
}

.filters {
  display: grid;
  grid-template-columns: 1fr;
  gap: 9px;
  border-left-color: var(--blue);
}

.filters .wide {
  grid-column: 1 / -1;
}

.month-quick {
  display: flex;
  gap: 7px;
  overflow-x: auto;
  scrollbar-width: none;
}

.month-quick::-webkit-scrollbar {
  display: none;
}

.month-quick button {
  min-height: 34px;
  flex: 0 0 auto;
  padding: 6px 10px;
  border-color: var(--line);
  background: var(--surface-soft);
  color: var(--ink);
  font-size: 12px;
}

.month-quick button.active {
  border-color: var(--clay);
  background: var(--clay);
  color: #fff;
}

.filters input[name="keyword"],
.filters button {
  grid-column: 1 / -1;
}

.analysis-grid {
  display: grid;
  gap: 13px;
}

.ai-question-block {
  padding: 15px;
  border: 1px solid rgba(46, 117, 182, 0.22);
  border-left: 4px solid var(--blue);
  border-radius: 8px;
  background: var(--surface);
}

.ai-question-form {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.prompt-chips {
  display: flex;
  gap: 7px;
  overflow-x: auto;
  padding: 10px 0 3px;
  scrollbar-width: none;
}

.prompt-chips::-webkit-scrollbar {
  display: none;
}

.prompt-chips button {
  min-height: 36px;
  flex: 0 0 auto;
  padding: 7px 10px;
  border-color: var(--line);
  background: var(--surface-soft);
  color: var(--ink);
  font-size: 12px;
}

.ai-insight {
  display: grid;
  gap: 5px;
  margin-bottom: 13px;
  padding: 11px 12px;
  border-left: 3px solid var(--blue);
  background: rgba(46, 117, 182, 0.07);
}

.ai-insight strong {
  color: var(--blue);
  font-size: 13px;
}

.ai-insight span,
.ai-usage {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.ai-answer {
  display: grid;
  gap: 13px;
  margin-top: 13px;
  padding-top: 13px;
  border-top: 1px solid var(--line);
}

.ai-evidence {
  display: grid;
  gap: 4px;
  padding-left: 11px;
  border-left: 3px solid var(--gold);
}

.ai-evidence span {
  color: var(--gold);
  font-size: 11px;
  font-weight: 800;
}

.ai-evidence strong {
  color: var(--ink);
  font-size: 13px;
  line-height: 1.45;
}

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

.ai-answer-body {
  display: grid;
  gap: 10px;
}

.ai-answer-body p {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 8px;
  margin: 0;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.6;
}

.ai-answer-body p > strong {
  color: var(--blue);
  font-size: 12px;
}

.stat-row {
  border-right: 0;
  border-left: 0;
  border-radius: 0;
  background: transparent;
  font-size: 14px;
}

.stat-row strong,
.bar-head strong {
  flex: 0 0 auto;
  font-variant-numeric: tabular-nums;
}

.bar-row {
  display: grid;
  gap: 7px;
  padding: 10px 0;
}

.bar-row + .bar-row {
  border-top: 1px solid var(--line);
}

.bar-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
}

.bar-track {
  height: 7px;
  overflow: hidden;
  border-radius: 4px;
  background: #d8ebe5;
}

.bar-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--clay);
  transition: width 420ms ease;
}

.trend-card {
  display: grid;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.trend-title {
  font-size: 13px;
  font-weight: 800;
}

.trend-bars {
  min-height: 98px;
  display: flex;
  align-items: end;
  gap: 10px;
  overflow-x: auto;
}

.trend-item {
  min-width: 36px;
  display: grid;
  justify-items: center;
  align-items: end;
  gap: 6px;
  color: var(--muted);
  font-size: 11px;
}

.trend-bar {
  width: 23px;
  min-height: 10px;
  border-radius: 4px 4px 1px 1px;
  background: var(--sage);
  transition: height 420ms ease;
}

.confirm-dialog,
.ai-loading {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(32, 49, 54, 0.34);
  backdrop-filter: blur(5px);
}

.confirm-card,
.ai-loader-card {
  width: min(336px, 100%);
  display: grid;
  gap: 12px;
  padding: 19px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.confirm-card p {
  margin: 0;
  color: var(--muted);
}

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

.ai-loader-card {
  justify-items: center;
  text-align: center;
}

.ai-loader-card > span {
  color: var(--muted);
  font-size: 13px;
}

.ledger-spinner {
  height: 34px;
  display: flex;
  align-items: end;
  gap: 5px;
}

.ledger-spinner span {
  width: 6px;
  height: 16px;
  border-radius: 3px 3px 1px 1px;
  background: var(--clay);
  animation: ledger-pulse 900ms ease-in-out infinite alternate;
}

.ledger-spinner span:nth-child(2) {
  height: 28px;
  background: var(--gold);
  animation-delay: 160ms;
}

.ledger-spinner span:nth-child(3) {
  height: 21px;
  background: var(--sage);
  animation-delay: 320ms;
}

.ai-loading-stages {
  width: 100%;
  display: grid;
  gap: 7px;
  padding-top: 3px;
  text-align: left;
}

.ai-loading-stages span {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
  animation: stage-pulse 3.6s ease infinite;
  animation-delay: calc(var(--stage-index) * 1.2s);
}

.ai-loading-stages span::before {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--line);
  content: "";
}

.empty {
  padding: 8px 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.toast {
  position: fixed;
  right: 14px;
  bottom: calc(82px + var(--safe-bottom));
  left: 14px;
  z-index: 70;
  max-width: 500px;
  margin: 0 auto;
  padding: 12px 14px;
  border-radius: 7px;
  background: var(--ink);
  color: #fff;
  box-shadow: var(--shadow);
  font-size: 13px;
}

@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes ledger-pulse {
  to {
    transform: scaleY(0.55);
    opacity: 0.5;
  }
}

@keyframes stage-pulse {
  0%, 28%, 100% {
    color: var(--muted);
  }
  8%, 20% {
    color: var(--clay);
    font-weight: 700;
  }
}

@media (min-width: 560px) {
  .board-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .board-grid div,
  .board-grid div:nth-child(even),
  .board-grid div:last-child {
    grid-column: auto;
    border-right: 1px solid var(--line);
  }

  .board-grid div:last-child {
    border-right: 0;
  }

  .inline-action {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .entry-form,
  .draft form,
  .filters {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .budget-form {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .filters input[name="keyword"] {
    grid-column: 1 / 2;
  }

  .filters button {
    grid-column: 2 / 3;
  }

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

@media (min-width: 760px) {
  .app-view {
    padding-right: 22px;
    padding-left: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}