/* Ledger — kasboekstijl. v1 */
@font-face { font-family: "Instrument Sans"; src: url("/fonts/instrument-sans-var.woff2") format("woff2"); font-weight: 400 700; font-display: swap; }
@font-face { font-family: "DM Mono"; src: url("/fonts/dm-mono-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "DM Mono"; src: url("/fonts/dm-mono-500.woff2") format("woff2"); font-weight: 500; font-display: swap; }

:root {
  --papier: #f4efe4;
  --papier-2: #ebe4d4;
  --inkt: #1d2433;
  --inkt-2: #4a5160;
  --lijn: #d6ccb8;
  --baksteen: #9c3f22;
  --groen: #2b6448;
  --sans: "Instrument Sans", system-ui, sans-serif;
  --mono: "DM Mono", ui-monospace, monospace;
  --digit-dur: 500ms;
  --digit-distance: 8px;
  --digit-stagger: 70ms;
  --digit-blur: 2px;
  --digit-ease: cubic-bezier(0.34, 1.45, 0.64, 1);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--papier); color: var(--inkt); font: 400 1.0625rem/1.6 var(--sans); }
a { color: var(--baksteen); text-underline-offset: 3px; }
a:hover { color: var(--inkt); }
.wrap { width: min(1120px, 100% - 40px); margin-inline: auto; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; background: var(--inkt); color: #fff; padding: 8px 12px; z-index: 10; }

/* kop */
.top { border-bottom: 1px solid var(--lijn); }
.top-in { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding-block: 18px; }
.merk { font-weight: 700; font-size: 1.25rem; color: var(--inkt); text-decoration: none; letter-spacing: -0.01em; }
.merk span { font: 400 0.8125rem var(--mono); color: var(--inkt-2); margin-left: 10px; letter-spacing: 0; }
.top nav { display: flex; gap: 20px; font-size: 0.9375rem; }
.top nav a { color: var(--inkt-2); text-decoration: none; }
.top nav a:hover { color: var(--baksteen); }

.kop { padding-block: 40px 8px; }
.label { font: 500 0.8125rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--baksteen); margin: 0 0 14px; }
h1 { font-size: clamp(2rem, 1.3rem + 2.6vw, 3.1rem); line-height: 1.05; letter-spacing: -0.025em; margin: 0 0 16px; max-width: 24ch; font-weight: 700; }
.lead { font-size: 1.125rem; max-width: 70ch; color: var(--inkt-2); margin: 0; }

/* tool */
.tool { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 56px; align-items: start; padding-block: 24px 72px; }
fieldset { border: 0; border-top: 1px solid var(--inkt); margin: 0 0 28px; padding: 14px 0 0; }
legend { font: 500 0.8125rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; padding: 0 10px 0 0; }
.veld { margin-bottom: 16px; }
.veld label, .lbl { display: block; font-weight: 600; font-size: 0.9375rem; margin-bottom: 6px; }
.veld small, summary small { display: block; font-weight: 400; color: var(--inkt-2); font-size: 0.8125rem; }
.rij2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.in { position: relative; }
.in input, .breuk input {
  width: 100%; font: 500 1.0625rem var(--mono); color: var(--inkt); background: #fbf8f1;
  border: 1px solid var(--lijn); border-radius: 4px; padding: 11px 12px; min-height: 46px;
}
.in.euro input { padding-left: 30px; }
.in.euro::before { content: "€"; position: absolute; left: 12px; top: 50%; transform: translateY(-50%); font-family: var(--mono); color: var(--inkt-2); }
.in.pct::after, .in.jr::after { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); font-family: var(--mono); color: var(--inkt-2); }
.in.pct::after { content: "%"; }
.in.jr::after { content: "jaar"; }
input:focus-visible { outline: 2px solid var(--baksteen); outline-offset: 1px; border-color: var(--baksteen); }
.seg { display: inline-flex; border: 1px solid var(--lijn); border-radius: 4px; overflow: hidden; background: #fbf8f1; }
.seg label { margin: 0; font-weight: 500; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: block; padding: 10px 16px; cursor: pointer; font-size: 0.9375rem; transition: background-color 150ms ease-in-out, color 150ms ease-in-out; }
.seg label + label span { border-left: 1px solid var(--lijn); }
.seg input:checked + span { background: var(--inkt); color: #fff; }
.seg input:focus-visible + span { outline: 2px solid var(--baksteen); outline-offset: -2px; }
.breuk { display: flex; align-items: center; gap: 10px; max-width: 220px; }
.breuk span { font: 500 1.25rem var(--mono); color: var(--inkt-2); }
details.extra { margin-top: 6px; }
summary { cursor: pointer; font-weight: 600; margin-bottom: 14px; }
.fout { color: var(--baksteen); font-weight: 600; margin: 0; }

/* kasboek */
.boek { position: sticky; top: 24px; background: var(--papier-2); padding: 28px 28px 24px; border-radius: 4px; }
.boek-h { font: 500 0.8125rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; margin: 0 0 12px; }
.regels { margin: 0; }
.regels div { display: flex; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--lijn); }
.regels dt { color: var(--inkt-2); }
.regels dd { margin: 0; font: 500 1rem var(--mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.regels .sub dt { color: var(--inkt); font-weight: 600; }
.regels .terug dd { color: var(--groen); }
.netto { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; margin: 18px 0 8px; padding-top: 14px; border-top: 2px solid var(--inkt); }
.netto span { font-weight: 600; }
.netto strong { font: 500 clamp(1.9rem, 1.4rem + 1.8vw, 2.6rem) var(--mono); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.uitleg { font-size: 0.875rem; color: var(--inkt-2); margin: 0; }
.res { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--lijn); }
.res h3 { font: 500 0.8125rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; margin: 0 0 6px; }
.res p { margin: 0; font-size: 0.9375rem; }
.res.let-op h3 { color: var(--baksteen); }

/* number pop-in (transitions.dev) */
@keyframes t-digit-pop-in {
  0% { transform: translateY(var(--digit-distance)); opacity: 0; filter: blur(var(--digit-blur)); }
  100% { transform: translateY(0); opacity: 1; filter: blur(0); }
}
.t-digit-group { display: inline; }
.t-digit { display: inline-block; white-space: pre; }
.t-digit-group.is-animating .t-digit { animation: t-digit-pop-in var(--digit-dur) var(--digit-ease) both; }
.t-digit-group.is-animating .t-digit[data-stagger="1"] { animation-delay: var(--digit-stagger); }
.t-digit-group.is-animating .t-digit[data-stagger="2"] { animation-delay: calc(var(--digit-stagger) * 2); }
@media (prefers-reduced-motion: reduce) {
  .t-digit-group.is-animating .t-digit { animation: none; }
  .seg span { transition: none; }
}

.balk { display: none; }
@media (max-width: 900px) {
  .balk { display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 5; justify-content: space-between; align-items: baseline;
    padding: 12px 16px calc(12px + env(safe-area-inset-bottom)); background: var(--inkt); color: #fff; text-decoration: none; }
  .balk strong { font: 500 1.25rem var(--mono); }
  body { padding-bottom: 56px; }
}

/* lopende tekst */
.tekst { padding-block: 40px; border-top: 1px solid var(--lijn); }
.tekst h2 { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2.1rem); line-height: 1.15; letter-spacing: -0.015em; margin: 0 0 16px; max-width: 26ch; }
.tekst p, .tekst li { max-width: 68ch; }
.tabel { border-collapse: collapse; width: 100%; max-width: 820px; margin-top: 18px; font-size: 0.9375rem; }
.tabel caption { text-align: left; font: 500 0.8125rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--inkt-2); padding-bottom: 8px; }
.tabel th, .tabel td { text-align: left; padding: 10px 14px 10px 0; border-bottom: 1px solid var(--lijn); vertical-align: top; }
.tabel thead th { font-weight: 600; border-bottom: 1px solid var(--inkt); }
.cijfers { max-width: none; }
.cijfers td { font-family: var(--mono); white-space: nowrap; font-variant-numeric: tabular-nums; }
.cijfers tbody th { font-weight: 400; min-width: 260px; }
.scroll { overflow-x: auto; }
.stappen { padding-left: 1.4em; }
.stappen li { margin-bottom: 10px; padding-left: 4px; }
.kaal { padding-left: 1.2em; }
.kaal li { margin-bottom: 8px; }
.bronnen a { word-break: break-word; }
.klein { font-size: 0.875rem; color: var(--inkt-2); }

.voet { background: var(--inkt); color: #e9e4d8; margin-top: 24px; }
.voet-in { padding-block: 36px; display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px; font-size: 0.9375rem; }
.voet p { margin: 0; max-width: 60ch; }
.voet strong { color: #fff; }

@media (max-width: 900px) {
  .tool { grid-template-columns: 1fr; gap: 32px; }
  .boek { position: static; }
  .voet-in { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .wrap { width: calc(100% - 32px); }
  .top-in { flex-direction: column; gap: 8px; }
  .merk span { display: block; margin: 2px 0 0; }
  .kop { padding-top: 36px; }
  .rij2 { grid-template-columns: 1fr; }
  .boek { padding: 22px 18px; }
  .seg span { padding: 10px 12px; }
}