@charset "utf-8";

/* ------------------------------------------------------------------
   Rekenblad — stylesheet voor een site die bonussen in euro's uitrekent.
   Alles staat op een raster van hairlines: cijfers rechts, tekst links.
   ------------------------------------------------------------------ */

:root {
  --ink: #111213;
  --panel: #1a1b21;
  --panel-2: #15161b;
  --rule: #343641;
  --rule-soft: rgba(52, 54, 65, 0.55);
  --text: #ffffff;
  --text-dim: #a9adba;
  --text-faint: #7c8191;
  --green: #51fe9e;
  --green-hi: #9affd5;
  --cyan: #22d6e4;
  --on-green: #1f2028;
  --link: #5aef9f;
  --link-hi: #5dffc9;
  --warn: #ffd166;
  --sans: Poppins, "Segoe UI", system-ui, -apple-system, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --shell: 1140px;
  --gap: 20px;
}

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

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--link);
  text-decoration-color: rgba(90, 239, 159, 0.4);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--link-hi);
  text-decoration-color: currentColor;
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

.wrap {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gap);
}

.skip {
  position: absolute;
  left: 0;
  top: 0;
  transform: translateY(-200%);
  z-index: 99;
  background: var(--green);
  color: var(--on-green);
  padding: 10px 16px;
  font-weight: 600;
  border-radius: 0 0 6px 0;
}

.skip:focus {
  transform: none;
}

/* --- leeftijdsstrip ------------------------------------------------ */

.topstrip {
  background: #0c0d0f;
  border-bottom: 1px solid var(--rule-soft);
  font-size: 13px;
  color: var(--text-faint);
}

.topstrip__in {
  display: flex;
  gap: 12px;
  align-items: center;
  min-height: 38px;
  padding-block: 7px;
}

.topstrip b {
  font-family: var(--mono);
  color: var(--warn);
  border: 1px solid rgba(255, 209, 102, 0.45);
  border-radius: 3px;
  padding: 0 6px;
  font-size: 12px;
  letter-spacing: 0.04em;
  flex: none;
}

/* --- kop ----------------------------------------------------------- */

.sitehead {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(17, 18, 19, 0.93);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}

.sitehead__in {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 68px;
  padding-block: 10px;
}

.brandlink {
  flex: none;
  display: inline-flex;
  line-height: 0;
}

.brandlink img {
  width: 112px;
  height: auto;
}

.menu {
  margin-left: auto;
}

.menu ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 2px;
  margin: 0;
  padding: 0;
}

.menu a {
  display: block;
  padding: 8px 11px;
  border-radius: 5px;
  font-size: 14.5px;
  color: var(--text-dim);
  text-decoration: none;
  white-space: nowrap;
}

.menu a:hover {
  color: var(--text);
  background: var(--panel);
}

.menu a[aria-current="page"] {
  color: var(--on-green);
  background: var(--green);
  font-weight: 600;
}

.burger {
  display: none;
  margin-left: auto;
  width: 44px;
  height: 40px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--panel);
  cursor: pointer;
  padding: 0;
}

.burger span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 3px auto;
  background: var(--text);
}

/* --- hero ---------------------------------------------------------- */

.hero {
  border-bottom: 1px solid var(--rule);
  background:
    radial-gradient(900px 340px at 82% -10%, rgba(34, 214, 228, 0.13), transparent 70%),
    linear-gradient(180deg, #131419, var(--ink));
}

.hero__in {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 40px;
  align-items: start;
  padding-block: 54px 46px;
}

.kicker {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  border-left: 2px solid var(--cyan);
  padding-left: 10px;
  margin-bottom: 18px;
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 650;
}

.hero__lead {
  margin: 0 0 22px;
  font-size: 18.5px;
  color: var(--text-dim);
  max-width: 62ch;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  font-size: 13.5px;
  color: var(--text-faint);
  font-family: var(--mono);
  border-top: 1px solid var(--rule-soft);
  padding-top: 16px;
}

.hero__meta span {
  white-space: nowrap;
}

/* --- rekenmachine -------------------------------------------------- */

.calc {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 22px;
}

.calc h2,
.calc__title {
  margin: 0 0 4px;
  font-size: 17px;
  font-weight: 650;
}

.calc__hint {
  margin: 0 0 18px;
  font-size: 13.5px;
  color: var(--text-faint);
}

.calc__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.field label {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.field input {
  font-family: var(--mono);
  font-size: 15px;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 9px 10px;
  width: 100%;
}

.calc__out {
  margin-top: 18px;
  border-top: 1px dashed var(--rule);
  padding-top: 14px;
}

.calc__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  padding: 7px 0;
  border-bottom: 1px solid var(--rule-soft);
  font-size: 14.5px;
}

.calc__row:last-of-type {
  border-bottom: 0;
}

.calc__row b {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: 16px;
}

.calc__row--total b {
  color: var(--green);
  font-size: 18px;
}

.calc__verdict {
  margin: 12px 0 0;
  font-size: 13.5px;
  color: var(--text-dim);
  background: var(--panel-2);
  border-left: 2px solid var(--cyan);
  padding: 9px 12px;
  border-radius: 0 6px 6px 0;
}

/* --- stappenstrip -------------------------------------------------- */

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: 10px;
  overflow: hidden;
}

.steps li {
  background: var(--panel);
  padding: 20px;
}

.steps .n {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  margin-bottom: 8px;
}

.steps h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
}

.steps p {
  margin: 0;
  font-size: 14.5px;
  color: var(--text-dim);
}

.steps code {
  font-family: var(--mono);
  color: var(--green);
  font-size: 13.5px;
}

/* --- hoofdtekst ---------------------------------------------------- */

main {
  display: block;
}

.body {
  padding-block: 46px 10px;
}

.prose {
  counter-reset: sec;
  max-width: 78ch;
}

.prose > h2 {
  counter-increment: sec;
  margin: 46px 0 14px;
  font-size: clamp(22px, 2.6vw, 28px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  font-weight: 640;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
}

.prose > h2::before {
  content: counter(sec, decimal-leading-zero);
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  margin-bottom: 8px;
}

.prose h3 {
  margin: 28px 0 8px;
  font-size: 18px;
  font-weight: 600;
}

.prose p {
  margin: 0 0 16px;
  color: #e7e9ef;
}

.prose strong {
  color: var(--text);
  font-weight: 640;
}

.prose ul,
.prose ol {
  margin: 0 0 18px;
  padding-left: 0;
  list-style: none;
}

.prose ul li,
.prose ol li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 9px;
  color: #e7e9ef;
}

.prose ul li::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 12px;
  width: 8px;
  height: 1px;
  background: var(--green);
}

.prose ol {
  counter-reset: li;
}

.prose ol li {
  counter-increment: li;
}

.prose ol li::before {
  content: counter(li, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--cyan);
}

.prose code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--panel);
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--green-hi);
}

.prose code a,
.prose a code {
  color: inherit;
}

/* --- rekenblok ----------------------------------------------------- */

.math {
  background: var(--panel-2);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--green);
  border-radius: 0 8px 8px 0;
  padding: 16px 18px;
  margin: 0 0 20px;
}

.math dl {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 18px;
  align-items: baseline;
}

.math dt {
  font-size: 14.5px;
  color: var(--text-dim);
}

.math dd {
  margin: 0;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
  font-size: 15px;
  color: var(--text);
}

.math dd.hi {
  color: var(--green);
  font-weight: 600;
}

.math__cap {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--text-faint);
}

/* --- kanttekening -------------------------------------------------- */

.note {
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--panel);
  padding: 16px 18px;
  margin: 0 0 22px;
}

.note--warn {
  border-color: rgba(255, 209, 102, 0.4);
  background: rgba(255, 209, 102, 0.06);
}

.note h3,
.note__h {
  margin: 0 0 6px;
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cyan);
  font-family: var(--mono);
  font-weight: 500;
}

.note--warn .note__h {
  color: var(--warn);
}

.note p:last-child {
  margin-bottom: 0;
}

/* --- tabellen ------------------------------------------------------ */

.sheetwrap {
  overflow-x: auto;
  margin: 0 0 24px;
  border: 1px solid var(--rule);
  border-radius: 8px;
}

.sheet {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  min-width: 520px;
}

.sheet caption {
  caption-side: top;
  text-align: left;
  padding: 12px 16px;
  font-size: 13px;
  color: var(--text-faint);
  border-bottom: 1px solid var(--rule);
  background: var(--panel-2);
}

.sheet th,
.sheet td {
  padding: 11px 16px;
  text-align: left;
  border-bottom: 1px solid var(--rule-soft);
  vertical-align: top;
}

.sheet thead th {
  background: var(--panel);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 600;
  white-space: nowrap;
}

.sheet tbody tr:last-child td,
.sheet tbody tr:last-child th {
  border-bottom: 0;
}

.sheet tbody th {
  font-weight: 600;
  color: var(--text);
}

.sheet td.num,
.sheet th.num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.sheet tbody tr:hover td,
.sheet tbody tr:hover th {
  background: rgba(34, 214, 228, 0.04);
}

.sheet tfoot td,
.sheet tfoot th {
  background: var(--panel-2);
  font-weight: 600;
}

.sheet .yes {
  color: var(--green);
}

.sheet .no {
  color: #ff9a9a;
}

/* --- figuur -------------------------------------------------------- */

.figure {
  margin: 0 0 26px;
  border: 1px solid var(--rule);
  border-radius: 10px;
  overflow: hidden;
  background: var(--panel);
}

.figure img {
  width: 100%;
}

.figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--text-faint);
  border-top: 1px solid var(--rule-soft);
}

/* --- vragen -------------------------------------------------------- */

.faq {
  border: 1px solid var(--rule);
  border-radius: 8px;
  overflow: hidden;
  margin: 0 0 26px;
}

.faq details {
  border-bottom: 1px solid var(--rule-soft);
  background: var(--panel);
}

.faq details:last-child {
  border-bottom: 0;
}

.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 15px 52px 15px 18px;
  position: relative;
  font-weight: 600;
  font-size: 16px;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  color: var(--cyan);
  font-size: 18px;
}

.faq details[open] summary::after {
  content: "\2212";
}

.faq details[open] summary {
  background: var(--panel-2);
}

.faq .faq__a {
  padding: 0 18px 16px;
  color: var(--text-dim);
  font-size: 15.5px;
}

.faq .faq__a p {
  margin: 12px 0 0;
}

/* --- doorkliks ----------------------------------------------------- */

.crosslinks {
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.crosslinks li {
  margin: 0;
  padding: 0;
}

.crosslinks a {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: baseline;
  padding: 13px 16px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--panel);
  text-decoration: none;
  color: var(--text);
}

.crosslinks a:hover {
  border-color: var(--green);
  background: var(--panel-2);
}

.crosslinks .path {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--green);
  white-space: nowrap;
}

.crosslinks .what {
  font-size: 14.5px;
  color: var(--text-dim);
}

/* --- grondslagen --------------------------------------------------- */

.basis {
  border-top: 1px solid var(--rule);
  margin-top: 46px;
  padding-top: 26px;
}

.basis h2 {
  margin: 0 0 18px;
  font-size: 20px;
  font-weight: 640;
}

.basis dl {
  margin: 0;
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 0;
}

.basis dt {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
  padding: 14px 0;
  border-top: 1px solid var(--rule-soft);
}

.basis dd {
  margin: 0;
  padding: 14px 0;
  border-top: 1px solid var(--rule-soft);
  color: var(--text-dim);
  font-size: 15px;
}

.basis dt:first-of-type,
.basis dd:first-of-type {
  border-top: 0;
}

/* --- voettekst ----------------------------------------------------- */

.sitefoot {
  margin-top: 56px;
  border-top: 1px solid var(--rule);
  background: #0e0f11;
  padding-block: 40px 30px;
  font-size: 14.5px;
  color: var(--text-dim);
}

.sitefoot__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.sitefoot h2 {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-family: var(--mono);
  font-weight: 500;
}

.sitefoot ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sitefoot li {
  margin-bottom: 7px;
}

.sitefoot a {
  text-decoration: none;
}

.sitefoot a:hover {
  text-decoration: underline;
}

.sitefoot__logo {
  display: inline-flex;
  line-height: 0;
  margin-bottom: 14px;
}

.sitefoot__logo img {
  width: 96px;
}

.sitefoot__legal {
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px solid var(--rule-soft);
  font-size: 13px;
  color: var(--text-faint);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  justify-content: space-between;
}

.sitefoot__legal p {
  margin: 0;
  max-width: 76ch;
}

/* --- responsief ---------------------------------------------------- */

@media (max-width: 1000px) {
  .hero__in {
    grid-template-columns: 1fr;
    gap: 30px;
    padding-block: 40px 34px;
  }
  .steps {
    grid-template-columns: 1fr;
  }
  .sitefoot__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  body {
    font-size: 16.5px;
  }
  .hero__meta {
    display: block;
  }
  .hero__meta span {
    display: block;
    white-space: normal;
  }
  .crosslinks a {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .crosslinks .path {
    white-space: normal;
    overflow-wrap: anywhere;
  }
  .burger {
    display: block;
  }
  .menu {
    display: none;
    width: 100%;
    order: 3;
    border-top: 1px solid var(--rule);
    padding-top: 10px;
  }
  .menu.open {
    display: block;
  }
  .menu ul {
    flex-direction: column;
    gap: 2px;
  }
  .menu a {
    padding: 10px 12px;
  }
  .sitehead__in {
    flex-wrap: wrap;
  }
  .calc__grid {
    grid-template-columns: 1fr;
  }
  .basis dl {
    grid-template-columns: 1fr;
  }
  .basis dd {
    border-top: 0;
    padding-top: 0;
  }
  .sitefoot__grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .math dl {
    grid-template-columns: 1fr;
  }
  .math dd {
    text-align: left;
    padding-bottom: 6px;
  }
}