:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1c2024;
  --muted: #6b7280;
  --border: #e3e6ea;
  --accent: #2563eb;
  --pos: #15803d;
  --neg: #c2410c;
  --pos-bg: #ecfdf3;
  --neg-bg: #fff4ed;
  --today: #eff4ff;
  color-scheme: light;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-size: 15px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --card: #1a1d22;
    --text: #e6e8eb;
    --muted: #9aa1ab;
    --border: #2c3138;
    --accent: #7aa2ff;
    --pos: #4ade80;
    --neg: #fb923c;
    --pos-bg: #13261b;
    --neg-bg: #2b1c12;
    --today: #1b2338;
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}
main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}
h1 {
  margin: 0;
  font-size: 1.5rem;
}
h2 {
  margin: 0;
  font-size: 1.1rem;
}
h3 {
  margin: 1.25rem 0 0.25rem;
  font-size: 1rem;
}

.muted {
  color: var(--muted);
}
.small {
  font-size: 0.85rem;
}
.pos {
  color: var(--pos);
}
.neg {
  color: var(--neg);
}
.num {
  font-variant-numeric: tabular-nums;
  text-align: right;
}

input,
button {
  font: inherit;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.3rem 0.5rem;
}
button {
  cursor: pointer;
}
button:hover {
  border-color: var(--accent);
}
button.link {
  border: none;
  background: none;
  color: var(--accent);
  padding: 0.3rem;
}
button.link.danger {
  color: var(--neg);
  background: none;
}
input:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
input.invalid {
  border-color: var(--neg);
  background: var(--neg-bg);
}

.app-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.save-state {
  font-size: 0.85rem;
  color: var(--muted);
}
.save-state.saved {
  color: var(--pos);
}
.save-state.error {
  color: var(--neg);
  font-weight: 600;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
}

.top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 1rem;
  align-items: start;
}
@media (max-width: 820px) {
  .top {
    grid-template-columns: 1fr;
  }
}

/* Week */
.week-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}
.week-nav h2 {
  flex: 0 1 auto;
}
.days {
  display: flex;
  flex-direction: column;
}
.day {
  display: grid;
  grid-template-columns: 6.5rem auto minmax(0, 1fr) 6.5rem;
  align-items: center;
  gap: 0.75rem;
  padding: 0.4rem 0.5rem;
  border-top: 1px solid var(--border);
}
.day.today {
  background: var(--today);
  border-radius: 6px;
}
.day.weekend .day-name {
  color: var(--muted);
}
.day-figures {
  text-align: right;
  white-space: nowrap;
}
@media (max-width: 640px) {
  .day {
    grid-template-columns: 1fr auto;
  }
  .day-input {
    grid-column: 1 / -1;
  }
}

.mode-toggle {
  display: inline-flex;
}
.mode-toggle button {
  border-radius: 0;
  font-size: 0.8rem;
  padding: 0.25rem 0.5rem;
}
.mode-toggle button:first-child {
  border-radius: 6px 0 0 6px;
}
.mode-toggle button:last-child {
  border-radius: 0 6px 6px 0;
}
.mode-toggle button + button {
  border-left: none;
}
.mode-toggle button.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

input.duration {
  width: 6.5rem;
}
input.note {
  width: 100%;
  max-width: 18rem;
}
.range {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}
.range label {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--muted);
}
input.break {
  width: 4.5rem;
}

.week-total {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  border-top: 2px solid var(--border);
  margin-top: 0.25rem;
  padding-top: 0.75rem;
}
.week-total div {
  display: flex;
  flex-direction: column;
}
.week-total strong {
  font-size: 1.1rem;
  font-variant-numeric: tabular-nums;
}
.week-total .pos strong {
  color: var(--pos);
}
.week-total .neg strong {
  color: var(--neg);
}

/* Balance */
.balance {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.balance.pos {
  background: var(--pos-bg);
}
.balance.neg {
  background: var(--neg-bg);
}
.balance-value {
  font-size: 2rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.balance.pos .balance-value {
  color: var(--pos);
}
.balance.neg .balance-value {
  color: var(--neg);
}

/* History */
.table-wrap {
  overflow-x: auto;
  margin-top: 0.5rem;
}
table {
  width: 100%;
  border-collapse: collapse;
}
th,
td {
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}
th {
  font-weight: 600;
  color: var(--muted);
  font-size: 0.85rem;
}
th.num,
td.num {
  text-align: right;
}
tbody tr {
  cursor: pointer;
}
tbody tr:hover {
  background: var(--today);
}
tbody tr.selected {
  background: var(--today);
  font-weight: 600;
}

/* Settings */
.settings summary {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  cursor: pointer;
}
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.settings-grid > label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.9rem;
}
fieldset {
  border: 1px solid var(--border);
  border-radius: 6px;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
label.check {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
}
.periods {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.periods li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.periods input[type='number'] {
  width: 4.5rem;
}

/* Header user / login */
.app-header .user {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
}
.app-header .save-state {
  margin-left: auto;
  margin-right: 1rem;
}
.login {
  display: flex;
  justify-content: center;
  padding-top: 12vh;
}
.login form {
  width: 100%;
  max-width: 22rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.login label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.9rem;
}
.login p {
  margin: 0;
}
button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  padding: 0.5rem;
}
button:disabled {
  opacity: 0.6;
  cursor: default;
}

/* Account */
.account summary {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  cursor: pointer;
}
.account > button,
.danger-zone {
  margin-top: 1rem;
}
.danger-zone {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 28rem;
}
.danger-zone p {
  margin: 0;
}
.danger-zone label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.9rem;
}
.danger-zone .actions {
  display: flex;
  gap: 0.5rem;
}
button.danger {
  background: var(--neg);
  border-color: var(--neg);
  color: #fff;
}
button.danger-outline {
  color: var(--neg);
  border-color: var(--neg);
}
.login h2 {
  font-size: 1rem;
}
.login .hint {
  margin-top: -0.6rem;
}