:root {
  --bg: #f4f5f8;
  --surface: #ffffff;
  --text: #1d2130;
  --muted: #6b7185;
  --border: #e3e5ec;
  --accent: #4f5bd5;
  --accent-hover: #3f4ac0;
  --income: #1f9d63;
  --income-bg: #e6f6ee;
  --expense: #d64545;
  --expense-bg: #fdecec;
  --warn: #b7860b;
  --warn-bg: #fdf4d9;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(20, 24, 40, 0.06), 0 6px 20px rgba(20, 24, 40, 0.05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161d;
    --surface: #1d2029;
    --text: #e9ebf2;
    --muted: #9298ab;
    --border: #2d313d;
    --accent: #7b86f0;
    --accent-hover: #8e98f5;
    --income: #3fc98a;
    --income-bg: #16362a;
    --expense: #f07171;
    --expense-bg: #3d1f22;
    --warn: #e2b64a;
    --warn-bg: #3a3119;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

.container {
  max-width: 820px;
  margin: 0 auto;
  padding: 32px 16px 48px;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}
.header h1 { margin: 0; font-size: 28px; }
.subtitle { margin: 4px 0 20px; color: var(--muted); }
.user-box { display: flex; align-items: center; gap: 10px; min-width: 0; }
.user-name {
  font-weight: 600;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Вкладки */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.tab {
  font: inherit;
  font-weight: 600;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  color: var(--muted);
  padding: 10px 16px;
  cursor: pointer;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab[hidden] { display: none; }
.tab:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; border-radius: 6px; }
[role="tabpanel"][hidden] { display: none; }

h2 { margin: 0 0 16px; font-size: 18px; }

/* Сводка */
.summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.card-label { color: var(--muted); font-size: 13px; }
.card-value {
  font-size: 22px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.card.income .card-value { color: var(--income); }
.card.expense .card-value { color: var(--expense); }
.card.progress .card-value { color: var(--accent); }
.card.done .card-value { color: var(--income); }

/* Панели */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}

/* Переключатель типа */
.type-switch {
  display: inline-flex;
  background: var(--bg);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 16px;
}
.type-switch input { position: absolute; opacity: 0; pointer-events: none; }
.type-switch span {
  display: block;
  padding: 8px 18px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  color: var(--muted);
  transition: background .15s, color .15s;
}
.type-switch input:checked[value="expense"] + span { background: var(--expense-bg); color: var(--expense); }
.type-switch input:checked[value="income"] + span { background: var(--income-bg); color: var(--income); }
.color-switch input:checked[value="green"] + span { background: var(--income-bg); color: var(--income); }
.color-switch input:checked[value="yellow"] + span { background: var(--warn-bg); color: var(--warn); }
.color-switch input:checked[value="red"] + span { background: var(--expense-bg); color: var(--expense); }
.deadline-switch { margin: 16px 0 12px; }
.deadline-switch input:checked + span { background: var(--surface); color: var(--text); box-shadow: var(--shadow); }
.type-switch input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Поля */
.fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}
.field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.field[hidden] { display: none; }
.task-fields { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.field.wide { grid-column: 1 / -1; }
.field input,
.field textarea,
.field select {
  font: inherit;
  font-size: 15px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  width: 100%;
}
.field textarea { resize: vertical; min-height: 72px; }
.field input:focus,
.field textarea:focus,
.field select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent); }

.hint { color: var(--muted); font-size: 13px; margin: 12px 0 0; }
.hint[hidden] { display: none; }
.error { color: var(--expense); font-size: 14px; margin: 8px 0 0; min-height: 1em; }

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

.btn {
  font: inherit;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 18px;
  cursor: pointer;
}
.btn:hover { background: var(--bg); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-hover); }
.btn:disabled { opacity: .6; cursor: default; }
.btn[hidden] { display: none; }

/* Список */
.list-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.list-header h2 { margin: 0; }

.filters { display: flex; gap: 6px; }
.chip {
  font: inherit;
  font-size: 13px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
}
.chip.active { background: var(--text); color: var(--surface); border-color: var(--text); }

.tx-list { list-style: none; margin: 0; padding: 0; }

.tx {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
}
.tx:first-child { border-top: none; }
.tx.editing { background: color-mix(in srgb, var(--accent) 8%, transparent); border-radius: 10px; padding-inline: 8px; }

.tx-main { min-width: 0; }
.tx-title { font-weight: 600; overflow-wrap: anywhere; }
.tx-meta { color: var(--muted); font-size: 13px; display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  background: var(--bg);
  border-radius: 6px;
  padding: 0 6px;
}

.tx-amount { font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }
.tx.income .tx-amount { color: var(--income); }
.tx.expense .tx-amount { color: var(--expense); }

.tx-actions { display: flex; gap: 4px; }
.icon-btn {
  border: none;
  background: transparent;
  color: var(--muted);
  width: 34px;
  height: 34px;
  border-radius: 8px;
  cursor: pointer;
  display: grid;
  place-items: center;
}
.icon-btn:hover { background: var(--bg); color: var(--text); }
.icon-btn.danger:hover { color: var(--expense); background: var(--expense-bg); }
.icon-btn svg { width: 18px; height: 18px; }

/* Задачи */
.task-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }

.task {
  --task-color: var(--income);
  --task-bg: var(--income-bg);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: 12px;
  padding: 12px 12px 12px 14px;
  border: 1px solid var(--border);
  border-left: 5px solid var(--task-color);
  border-radius: 10px;
  background: linear-gradient(90deg, var(--task-bg), var(--surface) 60%);
}
.task.yellow { --task-color: var(--warn); --task-bg: var(--warn-bg); }
.task.red { --task-color: var(--expense); --task-bg: var(--expense-bg); }
.task.status-done { opacity: .75; }
.task.status-done .tx-title { text-decoration: line-through; }
.task.editing { outline: 2px solid var(--accent); outline-offset: 1px; }

.task-desc {
  color: var(--text);
  font-size: 14px;
  margin: 2px 0 4px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.task-deadline { font-size: 14px; display: flex; gap: 4px 10px; flex-wrap: wrap; }
.task-deadline b { color: var(--task-color); font-weight: 600; }

.status-select {
  font: inherit;
  font-size: 13px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 8px;
  cursor: pointer;
  height: 34px;
}

/* Вход */
.login { max-width: 420px; padding-top: 12vh; }
.login-fields { display: grid; gap: 12px; }
.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
}
.checkbox input { width: 16px; height: 16px; accent-color: var(--accent); margin: 0; }

/* График */
.chart-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 4px;
}
.chart-nav .icon-btn { font-size: 22px; line-height: 1; }
.chart-label {
  font: inherit;
  font-weight: 600;
  background: none;
  border: none;
  color: var(--text);
  padding: 4px 6px;
  border-radius: 6px;
  cursor: pointer;
  min-width: 170px;
}
.chart-label:hover:not(:disabled) { background: var(--bg); }
.chart-label:disabled { cursor: default; }

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 8px;
}
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.legend-item b { color: var(--text); font-weight: 600; }

.swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 3px;
  flex: none;
}
.swatch.income { background: var(--income); }
.swatch.expense { background: var(--expense); }

.chart { position: relative; min-height: 240px; }
.chart svg { display: block; overflow: visible; touch-action: pan-y; }
.chart-grid { stroke: var(--border); stroke-width: 1; }
.chart-axis { stroke: var(--muted); stroke-opacity: .5; stroke-width: 1; }
.chart-tick { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.chart-bar.income { fill: var(--income); }
.chart-bar.expense { fill: var(--expense); }
.chart-hover { fill: var(--bg); }
.chart-empty {
  margin: 0;
  min-height: 240px;
  display: grid;
  place-items: center;
  color: var(--muted);
}

.chart-tooltip {
  position: absolute;
  top: 0;
  transform: translate(-50%, -100%);
  margin-top: 4px;
  pointer-events: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 4px 16px rgba(20, 24, 40, .14);
  padding: 8px 10px;
  font-size: 13px;
  min-width: 170px;
  z-index: 1;
}
.chart-tooltip[hidden] { display: none; }
.tooltip-title { font-weight: 600; margin-bottom: 4px; }
.tooltip-row { display: flex; justify-content: space-between; gap: 16px; color: var(--muted); }
.tooltip-row span { display: inline-flex; align-items: center; gap: 6px; }
.tooltip-row b { color: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; }

/* Пользователи (вкладка администратора) */
.users-note { margin: 0 0 12px; }
.user-list { list-style: none; margin: 0; padding: 0; }
.user-item {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
}
.user-item:first-child { border-top: none; }
.user-item .tx-meta { margin-top: 2px; }
.user-password { font-size: 14px; color: var(--muted); }
.user-password .mask { color: var(--text); letter-spacing: 1px; }
.tag.income { color: var(--income); background: var(--income-bg); }
.tag.expense { color: var(--expense); background: var(--expense-bg); }

.empty { color: var(--muted); text-align: center; margin: 16px 0 4px; }
.empty[hidden] { display: none; }

@media (max-width: 560px) {
  .summary { grid-template-columns: 1fr; }
  .card-value { font-size: 20px; }
  .tx { grid-template-columns: 1fr auto; }
  .tx-actions { grid-column: 1 / -1; justify-content: flex-end; }
  .task { grid-template-columns: 1fr; }
  .task-fields { grid-template-columns: 1fr; }
  .tab { flex: 1; }
  .header { flex-wrap: wrap; }
}