:root {
  color-scheme: light;
  --bg: #f5f8f8;
  --surface: #ffffff;
  --tint: #e9f3f3;
  --fg: #12282b;
  --muted: #4b6266;
  --border: #d7e3e4;
  --accent: #018186;
  --accent-strong: #016468;
  --on-accent: #ffffff;
  --ok: #0a6b47;
  --ok-bg: #e2f4ec;
  --warn: #8a4b00;
  --warn-bg: #fff3d6;
  --warn-border: #eccd8a;
  --bad: #a4262c;
  --shadow: 0 1px 2px rgb(18 40 43 / 6%), 0 8px 24px rgb(18 40 43 / 7%);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0d1a1c;
    --surface: #142427;
    --tint: #112326;
    --fg: #e4eeef;
    --muted: #9db2b5;
    --border: #2a3f42;
    --accent: #2bb7bc;
    --accent-strong: #5cd0d4;
    --on-accent: #06282a;
    --ok: #6fd6a9;
    --ok-bg: #12352a;
    --warn: #f1c26b;
    --warn-bg: #3a2c10;
    --warn-border: #6b5220;
    --bad: #ff8f8f;
    --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 8px 24px rgb(0 0 0 / 25%);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.55 "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}

h1, h2, h3 { line-height: 1.2; margin: 0; }
h1 { font-size: clamp(1.9rem, 4vw, 2.75rem); letter-spacing: -0.02em; text-wrap: balance; }
h2 { font-size: clamp(1.4rem, 2.6vw, 1.85rem); letter-spacing: -0.01em; }
h3 { font-size: 1.05rem; }
p { margin: 0; }
a { color: var(--accent-strong); }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* Header */
.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 650; font-size: 1.1rem; color: var(--fg); text-decoration: none; }
.brand img { display: block; }
.site-header nav { display: flex; gap: 20px; }
.site-header nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.site-header nav a:hover { color: var(--accent-strong); }

/* Hero */
.hero { padding: 56px 0; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.lead { margin-top: 16px; font-size: 1.1rem; color: var(--muted); max-width: 34em; }
.ticks { list-style: none; margin: 24px 0 0; padding: 0; display: grid; gap: 10px; }
.ticks li { display: flex; align-items: center; gap: 10px; }
.ticks li::before { content: "✓"; flex: none; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--tint); color: var(--accent-strong); font-size: 0.8rem; font-weight: 700; }

/* Cards and controls */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; box-shadow: var(--shadow); }
.upload { padding: 24px; display: grid; gap: 16px; }

.dropzone { display: grid; justify-items: center; gap: 4px; padding: 28px 16px; text-align: center; border: 2px dashed var(--border); border-radius: 12px; background: var(--bg); color: var(--accent-strong); cursor: pointer; transition: border-color 0.15s, background 0.15s; }
.dropzone:hover, .dropzone.dragging, .dropzone:focus-within { border-color: var(--accent); background: var(--tint); }
.dropzone.has-file { border-style: solid; border-color: var(--accent); }
.drop-title { font-weight: 600; color: var(--fg); overflow-wrap: anywhere; }
.drop-hint { font-size: 0.875rem; color: var(--muted); }

.field { display: grid; gap: 6px; font-weight: 550; font-size: 0.95rem; }
.field small { font-weight: 400; color: var(--muted); font-size: 0.85rem; }
input:not([type="file"]), textarea { width: 100%; font: inherit; font-weight: 400; color: var(--fg); background: var(--surface); padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; }
input:focus-visible, textarea:focus-visible, button:focus-visible, summary:focus-visible, a:focus-visible, td:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.password-row { display: flex; gap: 8px; }

button { font: inherit; font-weight: 600; padding: 10px 18px; border-radius: 8px; border: 1px solid transparent; cursor: pointer; transition: background 0.15s; }
button:disabled { opacity: 0.65; cursor: progress; }
.primary { background: var(--accent); color: var(--on-accent); }
.primary:hover:not(:disabled) { background: var(--accent-strong); }
.secondary { background: var(--surface); color: var(--accent-strong); border-color: var(--accent); }
.secondary:hover { background: var(--tint); }
.ghost { background: transparent; color: var(--accent-strong); border-color: var(--border); }
.ghost:hover { background: var(--tint); }
#convert { padding: 12px 18px; font-size: 1.05rem; }

#password-help summary, .tally summary { cursor: pointer; color: var(--accent-strong); font-weight: 550; }
#password-help { font-size: 0.925rem; }
#password-help dl { margin: 8px 0 0; padding: 12px; background: var(--tint); border-radius: 8px; }
#password-help dt { font-weight: 600; }
#password-help dd { margin: 2px 0 0; color: var(--muted); }

.status { font-size: 0.95rem; font-weight: 550; }
.status:empty { display: none; }
.status.error { color: var(--bad); }
.assure { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 6px; font-size: 0.875rem; color: var(--muted); }
.assure svg { flex: none; color: var(--accent-strong); }

/* Results */
.results { padding: 40px 0 48px; background: var(--surface); border-block: 1px solid var(--border); scroll-margin-top: 16px; }
.results-head { display: flex; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; gap: 16px; }
.verdict { display: inline-block; margin-top: 8px; padding: 3px 12px; border-radius: 999px; font-weight: 600; font-size: 0.925rem; }
.verdict.ok { background: var(--ok-bg); color: var(--ok); }
.verdict.warn { background: var(--warn-bg); color: var(--warn); }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }

.tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 24px 0; }
.tiles > div { padding: 14px 16px; background: var(--bg); border: 1px solid var(--border); border-radius: 10px; min-width: 0; }
.tiles dt { font-size: 0.85rem; color: var(--muted); }
.tiles dd { margin: 2px 0 0; font-size: 1.25rem; font-weight: 650; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }

.issues { margin-bottom: 20px; padding: 14px 16px; background: var(--warn-bg); border: 1px solid var(--warn-border); border-radius: 10px; color: var(--warn); }
.issues ul { margin: 6px 0 0; padding-left: 20px; }

.tally { padding: 14px 16px; margin-bottom: 20px; box-shadow: none; }
.tally[open] summary { margin-bottom: 14px; }
.tally-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 10px; }
.tally-rules { grid-column: 1 / -1; }
.tally .primary { margin-top: 12px; }

.hint { color: var(--muted); font-size: 0.9rem; }
.table-card { margin: 10px 0 20px; overflow: hidden; box-shadow: none; }
table { width: 100%; border-collapse: collapse; font-size: 0.925rem; }
th, td { padding: 10px 12px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--border); }
th { background: var(--bg); font-size: 0.82rem; color: var(--muted); font-weight: 600; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
td.date { white-space: nowrap; font-variant-numeric: tabular-nums; }
td.narration { overflow-wrap: anywhere; min-width: 240px; }
td[contenteditable] { cursor: text; }
td[contenteditable]:hover { background: var(--tint); }
tr.flagged td { background: var(--warn-bg); }
td.invalid { outline: 2px solid var(--bad); outline-offset: -2px; }

.price-note { margin-top: 20px; padding: 10px 14px; background: var(--tint); border-radius: 10px; display: inline-block; }

/* Payment dialog */
.pay { width: min(440px, calc(100% - 32px)); max-height: calc(100% - 32px); padding: 24px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); color: var(--fg); box-shadow: var(--shadow); }
.pay::backdrop { background: rgb(8 20 22 / 55%); }
.pay form { display: grid; gap: 14px; }
.pay-methods { margin: 0; color: var(--muted); font-size: 0.925rem; }
.button-link { display: inline-block; padding: 12px 18px; border-radius: 8px; text-decoration: none; text-align: center; font-weight: 600; color: var(--on-accent); }
.status.ok { color: var(--ok); }

/* Policy pages */
.policy { max-width: 760px; padding-block: 40px 56px; }
.policy h2 { font-size: 1.15rem; margin-top: 28px; }
.policy li { margin-block: 6px; }
.footer-legal { margin-top: 12px; font-size: 0.9rem; color: var(--muted); }

/* Payment tab */
.pay-page { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.pay-card { width: min(440px, 100%); padding: 28px 24px; display: grid; gap: 14px; text-align: center; justify-items: center; }
.pay-card h1 { font-size: 1.4rem; margin: 0; }

/* Marketing sections */
.band { padding: 56px 0; scroll-margin-top: 16px; }
.band-tint { background: var(--tint); }
.section-lead { margin-top: 8px; color: var(--muted); }
.steps, .facts { list-style: none; margin: 24px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.steps { counter-reset: step; }
.steps li, .facts li { padding: 20px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; }
.steps li { counter-increment: step; }
.steps li::before { content: counter(step); display: grid; place-items: center; width: 30px; height: 30px; margin-bottom: 12px; border-radius: 50%; background: var(--accent); color: var(--on-accent); font-weight: 700; }
.steps p, .facts p { margin-top: 6px; color: var(--muted); font-size: 0.95rem; }

.faq { max-width: 780px; }
.faq h2 { margin-bottom: 16px; }
.faq details { border-bottom: 1px solid var(--border); padding: 14px 0; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { margin-top: 8px; color: var(--muted); }

/* Footer */
.site-footer { padding: 28px 0; background: var(--surface); border-top: 1px solid var(--border); font-size: 0.9rem; }
.footer-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; }
.brand-small { font-size: 0.95rem; }
.bank-links { list-style: none; display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 0; padding: 0; }

@media (max-width: 900px) {
  .hero { padding: 32px 0; }
  .hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .steps, .facts { grid-template-columns: 1fr; }
  .tiles { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .site-header nav { display: none; }
  .tally-grid { grid-template-columns: 1fr; }
  .actions, .actions button { width: 100%; }

  /* Each transaction becomes a labelled card, so nothing needs sideways scrolling. */
  thead { display: none; }
  table, tbody, tr, td { display: block; }
  tr { padding: 10px 0; border-bottom: 1px solid var(--border); }
  tbody tr:last-child { border-bottom: 0; }
  th, td { border-bottom: 0; }
  td { display: flex; justify-content: space-between; gap: 16px; padding: 4px 14px; }
  td.narration { display: block; min-width: 0; }
  td[data-label]::before { content: attr(data-label); flex: none; color: var(--muted); font-size: 0.85rem; }
  td.narration::before { display: block; }
  td.empty { display: none; }
  td.empty:focus { display: flex; }
}