/* =========================================================
   Design tokens
   ========================================================= */
:root {
  /* Palette - monokromatik + aksen fungsional */
  --color-bg: #f4f4f5;
  --color-surface: #ffffff;
  --color-border: #e4e4e7;
  --color-border-strong: #d4d4d8;

  --color-text: #09090b;
  --color-text-secondary: #71717a;
  --color-text-tertiary: #a1a1aa;

  --color-income: #166534;
  --color-expense: #991b1b;

  --color-button: #18181b;
  --color-button-hover: #3f3f46;
  --color-focus: #09090b;

  /* Typography */
  --font-sans: "Inter", "Roboto", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "Courier New", monospace;

  /* Geometry - presisi, sudut tegas */
  --radius: 4px;
  --radius-sm: 2px;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;

  --border-base: 1px solid var(--color-border);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* =========================================================
   Header
   ========================================================= */
.site-header {
  background-color: var(--color-surface);
  border-bottom: var(--border-base);
}

.header-inner {
  max-width: 1240px;
  width: 100%;
  margin: 0 auto;
  padding: var(--space-4) var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.brand-icon {
  color: var(--color-text);
  flex-shrink: 0;
}

.brand-text h1 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.brand-text p {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.period-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border: var(--border-base);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

/* =========================================================
   Layout grid
   ========================================================= */
.layout {
  flex: 1;
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: var(--space-5);
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  grid-template-areas:
    "summary summary"
    "form table";
  gap: var(--space-5);
  align-content: start;
}

.summary {
  grid-area: summary;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background-color: var(--color-border);
  border: var(--border-base);
  border-radius: var(--radius);
  overflow: hidden;
}

.form-panel {
  grid-area: form;
}

.table-panel {
  grid-area: table;
}

/* =========================================================
   Summary metrics
   ========================================================= */
.metric {
  background-color: var(--color-surface);
  padding: var(--space-4) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.metric-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.metric-value.income {
  color: var(--color-income);
}

.metric-value.expense {
  color: var(--color-expense);
}

.metric-value.is-negative {
  color: var(--color-expense);
}

.metric-sub {
  font-size: 11.5px;
  color: var(--color-text-tertiary);
}

/* =========================================================
   Panels
   ========================================================= */
.panel {
  background-color: var(--color-surface);
  border: var(--border-base);
  border-radius: var(--radius);
  padding: var(--space-5);
  min-width: 0;
}

.panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-4);
  border-bottom: var(--border-base);
}

.panel-head h2 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.panel-head p {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.table-count {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

/* =========================================================
   Form
   ========================================================= */
form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-width: 0;
}

.type-field {
  border: none;
  margin: 0;
  padding: 0;
}

.field-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

input[type="text"],
input[type="number"],
input[type="date"],
select {
  font-family: var(--font-sans);
  font-size: 13.5px;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  padding: 9px 10px;
  width: 100%;
  outline: none;
  transition: border-color 0.12s ease;
}

input[type="number"] {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

input::placeholder {
  color: var(--color-text-tertiary);
}

input:hover,
select:hover {
  border-color: var(--color-text-tertiary);
}

input:focus,
select:focus {
  border-color: var(--color-focus);
  box-shadow: inset 0 0 0 1px var(--color-focus);
}

input[aria-invalid="true"] {
  border-color: var(--color-expense);
}

/* Radio pills */
.radio-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background-color: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.radio-pill {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-surface);
  padding: 9px 10px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  user-select: none;
  transition: background-color 0.12s ease, color 0.12s ease;
}

.radio-pill input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.radio-pill:hover {
  color: var(--color-text);
}

.radio-pill:has(input:checked) {
  background-color: var(--color-button);
  color: #ffffff;
}

.radio-pill:has(input:focus-visible) {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* Buttons */
.form-actions {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-1);
}

.btn-primary {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
  background-color: var(--color-button);
  color: #ffffff;
  border: 1px solid var(--color-button);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  cursor: pointer;
  flex: 1;
  transition: opacity 0.12s ease;
}

.btn-primary:hover {
  opacity: 0.85;
}

.btn-primary:active {
  opacity: 0.7;
}

.btn-primary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-ghost {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  cursor: pointer;
  transition: opacity 0.12s ease, color 0.12s ease;
}

.btn-ghost:hover {
  opacity: 0.75;
  color: var(--color-text);
}

.form-message {
  font-size: 12px;
  color: var(--color-text-secondary);
  min-height: 16px;
}

.form-message.error {
  color: var(--color-expense);
}

.form-message.success {
  color: var(--color-income);
}

/* =========================================================
   Data table
   ========================================================= */
.table-wrap {
  position: relative;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 640px;
}

thead th {
  background-color: #fafafa;
  text-align: left;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  padding: var(--space-3) var(--space-3);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

tbody td {
  padding: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
  color: var(--color-text);
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr {
  transition: background-color 0.1s ease;
}

tbody tr:hover {
  background-color: #fafafa;
}

tbody tr.deleting {
  opacity: 0.45;
}

.col-date {
  width: 110px;
  white-space: nowrap;
}

.col-desc {
  min-width: 160px;
}

.col-cat {
  width: 120px;
}

.col-type {
  width: 120px;
}

.col-amount {
  width: 140px;
  text-align: right;
}

.col-action {
  width: 64px;
  text-align: center;
}

td.cell-date {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

td.cell-desc {
  color: var(--color-text);
}

td.cell-desc .desc-empty {
  color: var(--color-text-tertiary);
  font-style: normal;
}

td.cell-cat {
  white-space: nowrap;
}

.tag {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background-color: #f4f4f5;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 2px 7px;
  white-space: nowrap;
}

td.cell-type {
  white-space: nowrap;
}

.type-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.type-badge svg {
  flex-shrink: 0;
}

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

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

td.cell-amount {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  text-align: right;
  white-space: nowrap;
}

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

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

td.cell-action {
  text-align: center;
}

.btn-delete {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background-color: var(--color-surface);
  color: var(--color-text-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color 0.12s ease, border-color 0.12s ease, background-color 0.12s ease;
}

.btn-delete:hover {
  color: var(--color-expense);
  border-color: var(--color-expense);
  background-color: #fef2f2;
}

.btn-delete:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.btn-delete:disabled {
  cursor: not-allowed;
  opacity: 0.4;
}

/* Table empty / error state */
.table-state {
  padding: var(--space-6) var(--space-5);
  background-color: var(--color-surface);
}

.state-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-2);
  color: var(--color-text-tertiary);
}

.state-title {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-text);
}

.state-sub {
  font-size: 12.5px;
  color: var(--color-text-secondary);
  max-width: 340px;
}

.state-inner.is-error {
  color: var(--color-expense);
}

.state-inner.is-error .state-title {
  color: var(--color-expense);
}

/* Skeleton rows */
.skeleton-row td {
  padding: var(--space-3);
}

.skeleton-bar {
  display: block;
  height: 10px;
  background-color: #f0f0f2;
  border-radius: var(--radius-sm);
  width: 60%;
}

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
  border-top: var(--border-base);
  background-color: var(--color-surface);
  padding: var(--space-3) var(--space-5);
}

.site-footer p {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  text-align: center;
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 960px) {
  .layout {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "summary"
      "form"
      "table";
    padding: var(--space-4);
  }

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

  .header-inner {
    padding: var(--space-3) var(--space-4);
  }
}

@media (max-width: 520px) {
  .metric-value {
    font-size: 19px;
  }

  .form-actions {
    flex-direction: column-reverse;
  }

  .btn-primary,
  .btn-ghost {
    width: 100%;
  }
}