@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --color-bg: #161826;
  --color-surface: #232532;
  --color-text: #e9e9ed;
  --color-accent: #9184d9;
  --color-divider: color-mix(in srgb, #e9e9ed 16%, transparent);

  --color-neutral-100: #f3f5fe;
  --color-neutral-200: #e4e7f5;
  --color-neutral-300: #cfd3e5;
  --color-neutral-700: #595d6c;
  --color-neutral-750: #494c58;
  --color-neutral-800: #3f424d;
  --color-neutral-900: #292b31;

  --color-accent-100: #f5f4ff;
  --color-accent-300: #d2cefd;
  --color-accent-800: #423a6a;
  --color-accent-900: #2b2741;

  --font-heading: "Inter", system-ui, sans-serif;
  --font-heading-weight: 500;
  --font-body: "Inter", system-ui, sans-serif;

  --space-1: 2.8px;
  --space-2: 5.6px;
  --space-3: 8.4px;
  --space-4: 11.2px;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;

  --shadow-sm: 0 0 0 1px #3f424d;
  --shadow-md: 0 0 0 1px #595d6c, 0 6px 18px rgba(0,0,0,0.55);
  --shadow-lg: 0 0 0 1px #9397ab, 0 16px 40px rgba(0,0,0,0.65);
}

* , *::before, *::after { box-sizing: border-box; }
body { margin: 0; background: var(--color-bg); color: var(--color-text); font-family: var(--font-body); font-size: 15px; line-height: 1.55; }
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: var(--font-heading-weight); letter-spacing: -0.015em; margin: 0; }
button { font-family: inherit; }
a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--color-accent-300); }

/* — layout — */
.app-shell { min-height: 100vh; display: flex; flex-direction: column; }
.app-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 32px; height: 64px; border-bottom: 2px solid var(--color-divider); flex-shrink: 0;
}
.app-header-left { display: flex; align-items: center; gap: 40px; }
.app-brand { font-family: var(--font-heading); font-weight: 700; font-size: 20px; }
.app-tabs { display: flex; gap: 28px; height: 64px; }
.app-tab {
  background: none; border: none; font-size: 15px; font-weight: 600; cursor: pointer;
  padding: 0; height: 100%; color: var(--color-neutral-700); border-bottom: 2px solid transparent;
}
.app-tab.active { color: var(--color-text); border-bottom: 2px solid var(--color-accent); }
.app-header-note { font-size: 13px; color: var(--color-neutral-700); }
.app-main { flex: 1; width: 100%; max-width: 1180px; margin: 0 auto; padding: 40px 32px 80px; box-sizing: border-box; }

/* — buttons — */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  cursor: pointer; text-decoration: none;
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 14px; line-height: 1.2; color: var(--color-text);
  background: transparent; border: 1px solid transparent;
  padding: var(--space-2) calc(var(--space-3) * 1.2);
  border-radius: var(--radius-md);
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary { color: var(--color-accent); border-color: var(--color-accent); }
.btn-primary:hover:not(:disabled) { background: color-mix(in srgb, var(--color-accent) 12%, transparent); }
.btn-secondary { border-color: var(--color-divider); }
.btn-secondary:hover:not(:disabled) { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.btn-ghost { color: var(--color-accent); padding-inline: var(--space-1); }
.btn-ghost:hover:not(:disabled) { background: color-mix(in srgb, var(--color-accent) 10%, transparent); }
.btn-danger { color: var(--color-accent-300); }
.btn-add {
  background: var(--color-accent-300); color: var(--color-accent-900); border: 1px solid var(--color-accent-300);
  border-radius: var(--radius-md); font-weight: 600; font-size: 14px; padding: 9px 16px; cursor: pointer;
}
.btn-add:hover { background: var(--color-accent-100); border-color: var(--color-accent-100); }

/* — forms — */
.field { display: flex; flex-direction: column; gap: 5px; }
.field > label { display: block; font-size: 12px; color: color-mix(in srgb, var(--color-text) 70%, transparent); }
.input {
  width: 100%; min-height: 36px; padding: 6px 10px; font: inherit;
  font-size: 14px; color: var(--color-text); caret-color: var(--color-accent);
  background: var(--color-surface); border: 1px solid var(--color-divider); border-radius: var(--radius-md);
  appearance: auto;
}
.input:hover { border-color: color-mix(in srgb, var(--color-text) 45%, transparent); }
.input:focus-visible { border-color: var(--color-accent); outline: none; }

/* — cards / tables — */
.card { border-radius: var(--radius-md); background: var(--color-surface); }
.card-empty { padding: 40px; text-align: center; color: var(--color-neutral-700); }
.table-wrap { background: var(--color-neutral-800); border: 1px solid var(--color-neutral-700); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); overflow: hidden; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th {
  font-weight: 700; font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--color-neutral-300); padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--color-neutral-700);
}
.table td { padding: 13px 16px; }
.table tbody tr.clickable { cursor: pointer; }
.table tbody tr.odd { background: var(--color-neutral-750); }
.table tbody tr.section-row td {
  padding: 10px 16px 6px; font-size: 12px; font-weight: 700; letter-spacing: 0.08em;
  color: var(--color-accent); text-transform: uppercase; background: none;
}
.table .amount-col { text-align: right; }
.tag {
  display: inline-flex; align-items: center; font-size: 11px; letter-spacing: 0.02em; padding: 3px 8px;
  border-radius: var(--radius-sm); font-variant-numeric: tabular-nums;
}
.tag-solid { background: var(--color-accent-800); color: var(--color-accent-100); font-family: ui-monospace, 'SF Mono', Menlo, Consolas, monospace; font-size: 12px; }
.tag-outline { border: 1px solid var(--color-accent); color: var(--color-accent); }
.tabular { font-variant-numeric: tabular-nums; }

/* — detail view — */
.detail-card { padding: 24px; display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; box-shadow: var(--shadow-sm); }
.detail-grid { margin-top: 18px; display: grid; grid-template-columns: repeat(2, minmax(180px, 1fr)); gap: 10px 32px; font-size: 14px; color: var(--color-neutral-300); }
.detail-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }

/* — ledger view — */
.ledger-layout { display: flex; gap: 32px; align-items: flex-start; }
.ledger-side { width: 230px; flex-shrink: 0; border-right: 2px solid var(--color-divider); padding-right: 24px; display: flex; flex-direction: column; gap: 2px; }
.ledger-side-item { padding: 12px 8px; cursor: pointer; border-left: 3px solid transparent; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.ledger-side-item.active { background: var(--color-neutral-800); border-left-color: var(--color-accent); }
.ledger-side-name { font-weight: 600; }
.ledger-side-total { font-size: 13px; color: var(--color-neutral-700); }
.ledger-content { flex: 1; min-width: 0; }

/* — dialog — */
.dialog-backdrop {
  position: fixed; inset: 0; display: grid; place-items: center; padding: var(--space-4);
  background: color-mix(in srgb, var(--color-neutral-900) 50%, transparent); z-index: 10;
}
.dialog {
  width: min(480px, 100%); display: flex; flex-direction: column; gap: var(--space-3);
  padding: var(--space-4); border-radius: var(--radius-lg); background: var(--color-surface); box-shadow: var(--shadow-lg);
  max-height: calc(100vh - 2 * var(--space-4)); overflow-y: auto;
}
.dialog-title { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 20px; }
.dialog-body { font-size: 14px; opacity: 0.9; display: flex; flex-direction: column; gap: 14px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: var(--space-2); margin-top: var(--space-2); }

.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.page-head h1 { font-size: 32px; }
.page-head p { color: var(--color-neutral-700); margin: 4px 0 0; font-size: 14px; }
.toolbar { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.search-input { width: 340px; }

.error-banner {
  background: color-mix(in srgb, var(--color-accent-300) 15%, transparent);
  border: 1px solid var(--color-accent-300); color: var(--color-accent-100);
  border-radius: var(--radius-md); padding: 10px 16px; margin-bottom: 20px; font-size: 14px;
}

@media (max-width: 720px) {
  .ledger-layout { flex-direction: column; }
  .ledger-side { width: 100%; border-right: none; border-bottom: 2px solid var(--color-divider); padding-right: 0; padding-bottom: 12px; flex-direction: row; overflow-x: auto; }
  .search-input { width: 100%; }
}

@media (max-width: 640px) {
  .app-header { padding: 0 16px; }
  .app-header-left { gap: 20px; }
  .app-header-note { display: none; }
  .app-brand { font-size: 17px; }
  .app-tabs { gap: 16px; }
  .app-tab { font-size: 14px; }
  .app-main { padding: 24px 16px 56px; }

  /* Collapse data tables into stacked cards instead of clipping/scrolling columns */
  .table thead { display: none; }
  .table, .table tbody { display: block; width: 100%; }
  .table tr { display: block; }
  .table tbody tr:not(.section-row),
  .table tfoot tr {
    padding: 12px 16px; border-bottom: 1px solid var(--color-neutral-700);
  }
  .table td { display: block; padding: 3px 0; border: none; }
  .table td[data-label]::before {
    content: attr(data-label); display: block; font-size: 11px; letter-spacing: 0.05em;
    text-transform: uppercase; color: var(--color-neutral-300); margin-top: 6px;
  }
  .table td.cell-primary { font-size: 16px; font-weight: 600; }
  .table td.amount-col { text-align: left; }

  .detail-card { padding: 20px; flex-direction: column; }
  .detail-grid { grid-template-columns: 1fr; }
  .detail-actions { justify-content: flex-start; }

  .dialog-backdrop { align-items: flex-start; padding: 12px; padding-top: 32px; }
}