:root {
  color-scheme: light;
  --ink: #1c1915;
  --muted: #6d655c;
  --paper: #f3efe6;
  --card: #fffdf8;
  --line: #e4dccf;
  --income: #1b6b45;
  --income-soft: #e5f4eb;
  --expense: #b42318;
  --expense-soft: #fdecea;
  --accent: #1e4d45;
  --on-accent: #fff;
  --field: #fff;
  --ghost: #efe8dc;
  --glow: #efe4cf;
  --focus: #c9e3d6;
  --chart-grid: #e7dfd2;
  --chart-label: #6d655c;
  --chart-ink: #1c1915;
  --chart-shadow: rgba(48, 36, 18, 0.12);
  --shadow: 0 10px 30px rgba(48, 36, 18, 0.06);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --ink: #f4efe6;
  --muted: #b7aea2;
  --paper: #141210;
  --card: #221e19;
  --line: #3c342c;
  --income: #8ed4ad;
  --income-soft: #1b3328;
  --expense: #f0a097;
  --expense-soft: #3a221e;
  --accent: #cbb892;
  --on-accent: #1c1915;
  --field: #181512;
  --ghost: #2e2822;
  --glow: #2a241c;
  --focus: #4e6d60;
  --chart-grid: #3c342c;
  --chart-label: #b7aea2;
  --chart-ink: #f4efe6;
  --chart-shadow: rgba(0, 0, 0, 0.4);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, var(--glow) 0%, transparent 55%),
    var(--paper);
  font-family: "Segoe UI", "PT Sans", sans-serif;
}

.app {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 24px;
}

.header-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: flex-end;
  gap: 12px;
}

#theme-toggle {
  height: 42px;
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 700;
}

h1, h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 600;
}

h1 {
  font-size: 34px;
  line-height: 1.15;
}

h2 {
  font-size: 22px;
  margin-bottom: 16px;
}

.month-field,
form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

input,
select,
button {
  font: inherit;
}

input,
select {
  height: 42px;
  padding: 0 12px;
  color: var(--ink);
  background: var(--field);
  border: 1px solid var(--line);
  border-radius: 10px;
}

input:focus,
select:focus {
  outline: 2px solid var(--focus);
  border-color: var(--accent);
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.tab {
  height: 40px;
  color: var(--muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 999px;
}

.tab.is-active {
  color: var(--ink);
  background: var(--card);
  border-color: var(--line);
  box-shadow: var(--shadow);
}

.stage {
  position: relative;
  overflow: hidden;
  transition: height 0.4s ease;
}

.tab-panel {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.tab-panel.is-active {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.stage:not(.is-ready) {
  height: auto;
}

.stage:not(.is-ready) .tab-panel {
  position: static;
  transform: none;
  transition: none;
}

.stage:not(.is-ready) .tab-panel:not(.is-active) {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  .stage,
  .tab-panel {
    transition: none;
  }
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.card,
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.card {
  padding: 18px 20px;
}

.card span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.card strong {
  display: block;
  margin-top: 8px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 30px;
  font-weight: 600;
}

.card-income strong { color: var(--income); }
.card-expense strong { color: var(--expense); }
.card-balance.is-negative strong { color: var(--expense); }

.entry-panel {
  max-width: 640px;
}

.panel {
  padding: 20px;
}

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

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

.form-actions {
  display: flex;
  gap: 8px;
}

button {
  height: 42px;
  padding: 0 16px;
  border: 0;
  border-radius: 10px;
  cursor: pointer;
}

#submit-btn,
.edit-btn {
  color: var(--on-accent);
  background: var(--accent);
}

#cancel-btn,
.delete-btn {
  color: var(--ink);
  background: var(--ghost);
}

.delete-btn {
  color: var(--expense);
}

button:hover {
  filter: brightness(0.96);
}

.form-error {
  margin: 0;
  color: var(--expense);
  font-size: 13px;
}

.charts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.chart-card {
  position: relative;
  min-height: 250px;
}

canvas {
  display: block;
  width: 100%;
  height: 250px;
}

canvas.is-hidden {
  display: none;
}

.chart-empty,
.table-empty {
  margin: 28px 0 8px;
  color: var(--muted);
  text-align: center;
}

.entries-panel h2 span {
  color: var(--muted);
  font-family: "Segoe UI", sans-serif;
  font-size: 16px;
  font-weight: 500;
}

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

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

th {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.num,
td.amount {
  text-align: right;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

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

.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.badge.income {
  color: var(--income);
  background: var(--income-soft);
}

.badge.expense {
  color: var(--expense);
  background: var(--expense-soft);
}

.row-actions {
  display: flex;
  gap: 6px;
}

.row-actions button {
  height: 34px;
  padding: 0 10px;
  font-size: 13px;
}

.note {
  color: var(--muted);
}

@media (max-width: 900px) {
  .cards,
  .charts {
    grid-template-columns: 1fr;
  }

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

  h1 {
    font-size: 28px;
  }
}

@media (max-width: 560px) {
  form {
    grid-template-columns: 1fr;
  }

  .app {
    width: min(100% - 20px, 1120px);
  }
}