/*
 * Software The Right Way — "bouwtekening" op grijs tekenpapier.
 * Signatuur: de doorsnede in de hero (hoe de app eruitziet boven de lijn, wat eronder zit eronder).
 * Geen externe fonts of scripts: alles komt van 'self' (strikte CSP).
 */

:root {
  --papier: #edf1ef;
  --papier-diep: #e1e7e4;
  --wit: #fbfcfb;
  --grafiet: #1c2024;
  --potlood: #555c63;
  --lijn: #aeb9b5;
  --maat: #1e5bb8;
  --maat-donker: #17488f;
  --revisie: #b93c0b;

  --f-kop: "DIN Alternate", "DIN Next", Bahnschrift, "D-DIN", "Arial Narrow", "Helvetica Neue", sans-serif;
  --f-tekst: Charter, "Bitstream Charter", "Iowan Old Style", "Sitka Text", Cambria, Georgia, serif;
  --f-mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --ruimte: clamp(3.5rem, 8vw, 6.5rem);
  --rand: clamp(1rem, 4vw, 2rem);

  color-scheme: light;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  background: var(--papier);
  color: var(--grafiet);
  font-family: var(--f-tekst);
  font-size: 1.125rem;
  line-height: 1.6;
}

img {
  max-width: 100%;
}

a {
  color: var(--maat);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--maat-donker);
}

:focus-visible {
  outline: 3px solid var(--maat);
  outline-offset: 3px;
}

h1,
h2,
h3 {
  font-family: var(--f-kop);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 0.6em;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.8rem, 3.6vw, 2.5rem);
}

h3 {
  font-size: 1.3rem;
}

p {
  margin: 0 0 1em;
}

.wrap {
  width: 100%;
  max-width: 72rem;
  margin-inline: auto;
  padding-inline: var(--rand);
}

/* Smalle tekstkolom, maar met dezelfde linkerkant als de brede secties */
.smal > * {
  max-width: 46rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--grafiet);
  color: var(--wit);
  padding: 0.6rem 1rem;
  z-index: 10;
}

.skip-link:focus {
  top: 1rem;
}

/* Labels in de stijl van tekening-annotaties */
.label {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--potlood);
  margin-bottom: 1.2rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: color-mix(in srgb, var(--papier) 92%, transparent);
  border-bottom: 1px solid var(--lijn);
  backdrop-filter: blur(6px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.8rem;
  flex-wrap: wrap;
}

.wordmark {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--grafiet);
  line-height: 1.15;
}

.wordmark:hover {
  color: var(--grafiet);
}

.wordmark__main {
  font-family: var(--f-kop);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}

.wordmark__sub {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--potlood);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  font-family: var(--f-kop);
  font-size: 1rem;
}

.site-nav a {
  color: var(--grafiet);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--maat);
}

.site-nav .site-nav__cta {
  border: 1.5px solid var(--grafiet);
  padding: 0.35rem 0.8rem;
}

.site-nav .site-nav__cta:hover {
  background: var(--grafiet);
  color: var(--wit);
}

@media (max-width: 34rem) {
  .site-nav a:not(.site-nav__cta) {
    display: none;
  }
}

/* Knoppen */
.knop {
  display: inline-block;
  background: var(--maat);
  color: var(--wit);
  border: 0;
  font-family: var(--f-kop);
  font-weight: 700;
  font-size: 1.08rem;
  letter-spacing: 0.01em;
  padding: 0.85rem 1.4rem;
  text-decoration: none;
  cursor: pointer;
}

.knop:hover {
  background: var(--maat-donker);
  color: var(--wit);
}

.knop--stil {
  background: transparent;
  color: var(--grafiet);
  box-shadow: inset 0 0 0 1.5px var(--grafiet);
}

.knop--stil:hover {
  background: var(--grafiet);
  color: var(--wit);
}

.knop--vol {
  width: 100%;
}

/* Hero */
.hero {
  padding-block: clamp(2.5rem, 6vw, 5rem) var(--ruimte);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}

.lead {
  font-size: 1.25rem;
  max-width: 34rem;
}

.hero__acties {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 2rem 0 1rem;
}

/* Early-bird met aftelklok */
.earlybird {
  margin-top: 2rem;
  max-width: 30rem;
  background: var(--wit);
  border: 1.5px solid var(--grafiet);
  border-top: 6px solid var(--maat);
  padding: 1.25rem 1.4rem 1.4rem;
}

.earlybird__kop,
.aftellen__kop {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--maat);
  margin: 0 0 0.3rem;
}

.earlybird__prijs {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  margin: 0 0 0.3rem;
  font-family: var(--f-kop);
}

.earlybird__bedrag {
  font-weight: 700;
  font-size: clamp(2.6rem, 6vw, 3.4rem);
  line-height: 1;
}

.earlybird__prijs s {
  font-size: 1.4rem;
  color: var(--potlood);
}

.earlybird__uitleg {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.earlybird__daarna {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.1rem;
}

.aftellen {
  border-top: 1px dashed var(--lijn);
  padding-top: 0.9rem;
  margin-bottom: 1.2rem;
}

.aftellen__kop {
  color: var(--potlood);
}

.aftellen__tijd {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.5rem;
}

.aftellen__eenheid {
  display: flex;
  flex-direction: column;
  align-items: center;
  border: 1px solid var(--lijn);
  padding: 0.45rem 0.2rem 0.35rem;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--potlood);
}

.aftellen__getal {
  font-family: var(--f-kop);
  font-weight: 700;
  font-size: 1.9rem;
  line-height: 1.1;
  color: var(--grafiet);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
  text-transform: none;
}

@media (max-width: 56rem) {
  .hero__grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Signatuur: de doorsnede */
.doorsnede {
  margin: 0;
  background-color: var(--wit);
  background-image:
    linear-gradient(to right, rgb(30 91 184 / 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgb(30 91 184 / 0.07) 1px, transparent 1px);
  background-size: 1.25rem 1.25rem;
  border: 1.5px solid var(--grafiet);
  padding: 1.5rem 1.25rem 1rem;
}

.doorsnede__boven {
  display: flex;
  justify-content: center;
  padding-bottom: 0.9rem;
}

.mock {
  width: min(100%, 17rem);
  background: #ffffff;
  border-radius: 14px;
  box-shadow: 0 10px 24px rgb(28 32 36 / 0.14);
  padding: 1rem 1rem 1.1rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 0.85rem;
  line-height: 1.3;
}

.mock__titel {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.7rem;
}

.mock__veld {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  border: 1px solid #e3e6e8;
  border-radius: 8px;
  padding: 0.45rem 0.6rem;
  margin-bottom: 0.4rem;
  color: #6b7177;
}

.mock__waarde {
  color: var(--grafiet);
}

.mock__knop {
  display: block;
  margin-top: 0.7rem;
  background: var(--grafiet);
  color: #ffffff;
  text-align: center;
  border-radius: 8px;
  padding: 0.55rem;
  font-weight: 600;
}

.doorsnede__kop,
.doorsnede__lijn {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--potlood);
}

.doorsnede__kop {
  margin: 0 0 0.9rem;
}

/* De scheidslijn tussen "hoe het eruitziet" en "wat eronder zit" */
.doorsnede__lijn {
  margin: 0 -1.25rem;
  padding: 0.75rem 1.25rem 0;
  border-top: 3px solid var(--grafiet);
  position: relative;
}

.doorsnede__lijn::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 0.45rem;
  background: repeating-linear-gradient(-45deg, var(--grafiet) 0 1px, transparent 1px 9px);
  opacity: 0.55;
}

.doorsnede__lagen {
  list-style: none;
  margin: 0.9rem 0 0;
  padding: 0;
  border-left: 1.5px solid var(--grafiet);
  border-right: 1.5px solid var(--grafiet);
  border-bottom: 1.5px solid var(--grafiet);
}

.laag {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.7rem 0.75rem;
  border-top: 1px solid var(--grafiet);
  background-color: var(--wit);
}

.laag__naam {
  font-family: var(--f-kop);
  font-weight: 700;
  font-size: 1rem;
  background: var(--wit);
  padding: 0.05rem 0.35rem;
}

.laag__ref {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--maat);
  white-space: nowrap;
  background: var(--wit);
  padding: 0.05rem 0.35rem;
}

/* Materiaalarceringen zoals op een bouwtekening */
.laag--grind {
  background-image: radial-gradient(circle, rgb(28 32 36 / 0.32) 1px, transparent 1.4px);
  background-size: 7px 7px;
}

.laag--arcering {
  background-image: repeating-linear-gradient(45deg, rgb(28 32 36 / 0.22) 0 1px, transparent 1px 8px);
}

.laag--arcering-kruis {
  background-image:
    repeating-linear-gradient(45deg, rgb(28 32 36 / 0.2) 0 1px, transparent 1px 9px),
    repeating-linear-gradient(-45deg, rgb(28 32 36 / 0.2) 0 1px, transparent 1px 9px);
}

.laag--beton {
  background-image:
    radial-gradient(circle at 30% 40%, rgb(28 32 36 / 0.28) 1.2px, transparent 1.6px),
    radial-gradient(circle at 70% 75%, rgb(28 32 36 / 0.18) 2px, transparent 2.6px);
  background-size: 13px 11px, 19px 17px;
}

.laag--fundering {
  background-color: var(--papier-diep);
  background-image: repeating-linear-gradient(45deg, rgb(28 32 36 / 0.38) 0 1.5px, transparent 1.5px 5px);
  padding-block: 1rem;
}

.doorsnede figcaption {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--potlood);
  margin-top: 0.9rem;
}

/* Secties */
.sectie {
  padding-block: var(--ruimte);
}

.sectie--vlak {
  background: var(--wit);
  border-block: 1px solid var(--lijn);
}

.sectie__kop {
  max-width: 44rem;
  margin-bottom: 2.5rem;
}

.nadruk {
  font-family: var(--f-kop);
  font-size: 1.35rem;
  line-height: 1.35;
  margin-top: 2rem;
}

/* Herken je dit: revisiewolkjes in de kantlijn */
.herken {
  list-style: none;
  margin: 0;
  padding: 0;
}

.herken li {
  position: relative;
  padding: 0.85rem 0 0.85rem 2.4rem;
  border-bottom: 1px dashed var(--lijn);
}

.herken li::before {
  content: "!";
  position: absolute;
  left: 0;
  top: 0.95rem;
  width: 1.5rem;
  height: 1.5rem;
  border: 1.5px solid var(--revisie);
  border-radius: 50%;
  color: var(--revisie);
  font-family: var(--f-kop);
  font-weight: 700;
  font-size: 0.9rem;
  line-height: 1.35rem;
  text-align: center;
}

/* Programma */
.modules {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1.5px solid var(--grafiet);
}

.module {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: 1.25rem;
  align-items: baseline;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--lijn);
}

.module__nr {
  font-family: var(--f-kop);
  font-weight: 700;
  font-size: 2.2rem;
  line-height: 1;
  color: var(--maat);
  font-variant-numeric: tabular-nums;
}

.module__tekst h3 {
  margin-bottom: 0.25rem;
}

.module__tekst p {
  margin: 0;
  color: var(--potlood);
  max-width: 40rem;
}

@media (max-width: 40rem) {
  .module {
    grid-template-columns: 3rem minmax(0, 1fr);
  }
}

.voetnoot {
  font-size: 1rem;
  color: var(--potlood);
  margin-top: 1.8rem;
  max-width: 46rem;
}

/* Voor wie */
.twee-kolom {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 5vw, 4rem);
}

@media (max-width: 46rem) {
  .twee-kolom {
    grid-template-columns: minmax(0, 1fr);
  }
}

.lijst {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
}

.lijst li {
  position: relative;
  padding-left: 1.6rem;
  margin-bottom: 0.6rem;
}

.lijst li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--potlood);
  font-family: var(--f-kop);
}

.lijst--plus li::before {
  content: "+";
  color: var(--maat);
  font-weight: 700;
}

.lijst--min li::before {
  content: "−";
  color: var(--revisie);
  font-weight: 700;
}

/* Werkwijze */
.stappen {
  margin: 2rem 0 0;
  padding-left: 1.4rem;
}

.stappen li {
  padding-left: 0.5rem;
  margin-bottom: 1.1rem;
}

.stappen li::marker {
  font-family: var(--f-kop);
  font-weight: 700;
  color: var(--maat);
}

/* Prijs */
.prijs {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

@media (max-width: 52rem) {
  .prijs {
    grid-template-columns: minmax(0, 1fr);
  }
}

.prijs__kaart {
  background: var(--wit);
  border: 1.5px solid var(--grafiet);
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.prijs__bedrag {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 1rem;
  margin-bottom: 0.2rem;
}

.prijs__euro {
  font-family: var(--f-kop);
  font-weight: 700;
  font-size: clamp(3rem, 8vw, 4.5rem);
  line-height: 1;
}

.prijs__label {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--maat);
  margin-bottom: 0.4rem;
}

.prijs__oud {
  font-family: var(--f-kop);
  font-size: 1.6rem;
  color: var(--potlood);
}

.prijs__toelichting,
.prijs__klein {
  font-family: var(--f-mono);
  font-size: 0.82rem;
  color: var(--potlood);
}

.prijs__toelichting {
  margin-bottom: 1.6rem;
}

.prijs__klein {
  margin: 1rem 0 0;
}

.niet-kader {
  border: 1.5px dashed var(--revisie);
  padding: clamp(1.25rem, 3vw, 2rem);
}

.niet-kader h2 {
  font-size: 1.5rem;
  color: var(--revisie);
}

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

/* FAQ */
.faq details {
  border-bottom: 1px solid var(--lijn);
}

.faq details:first-child {
  border-top: 1px solid var(--lijn);
}

.faq summary {
  cursor: pointer;
  font-family: var(--f-kop);
  font-weight: 700;
  font-size: 1.2rem;
  padding: 1rem 2rem 1rem 0;
  list-style: none;
  position: relative;
}

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

.faq summary::after {
  content: "+";
  position: absolute;
  right: 0.2rem;
  top: 0.9rem;
  color: var(--maat);
  font-size: 1.4rem;
}

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

.faq details p {
  color: var(--potlood);
  padding-bottom: 0.6rem;
}

/* Inschrijven */
.sectie--inschrijven {
  background: var(--grafiet);
  color: var(--papier);
}

.sectie--inschrijven a {
  color: #9cc0f5;
}

.inschrijven {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

@media (max-width: 52rem) {
  .inschrijven {
    grid-template-columns: minmax(0, 1fr);
  }
}

.formulier {
  background: var(--papier);
  color: var(--grafiet);
  padding: clamp(1.25rem, 4vw, 2rem);
}

.formulier a {
  color: var(--maat);
}

.veld {
  margin-bottom: 1.2rem;
}

.veld label {
  display: block;
  font-family: var(--f-kop);
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.optioneel {
  font-family: var(--f-mono);
  font-weight: 400;
  font-size: 0.75rem;
  color: var(--potlood);
}

.veld input[type="text"],
.veld input[type="email"] {
  width: 100%;
  font: inherit;
  padding: 0.7rem 0.8rem;
  border: 1.5px solid var(--grafiet);
  background: #ffffff;
  color: var(--grafiet);
  border-radius: 0;
}

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

.veld--vink {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.7rem;
  align-items: start;
}

.veld--vink input {
  width: 1.25rem;
  height: 1.25rem;
  margin-top: 0.3rem;
  accent-color: var(--maat);
}

.veld--vink label {
  font-family: var(--f-tekst);
  font-weight: 400;
  font-size: 1rem;
  margin: 0;
}

.veld--vink .field-error {
  grid-column: 1 / -1;
}

.veld--honing {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.field-error {
  color: var(--revisie);
  font-size: 0.95rem;
  margin: 0.35rem 0 0;
}

.formulier__klein {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  color: var(--potlood);
  margin: 0.9rem 0 0;
}

/* Losse pagina's */
.melding {
  min-height: 40vh;
}

.tekstpagina h2 {
  font-size: 1.5rem;
  margin-top: 2.2rem;
}

.debug {
  white-space: pre-wrap;
  font-family: var(--f-mono);
  font-size: 0.8rem;
  background: var(--wit);
  border: 1px solid var(--lijn);
  padding: 1rem;
  overflow-x: auto;
}

/* Footer als titelhoek van een tekening */
.titelhoek-wrap {
  padding-block: 3rem;
}

.titelhoek {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  border: 1.5px solid var(--grafiet);
  background: var(--wit);
}

.titelhoek__cel {
  padding: 0.6rem 0.8rem;
  border-right: 1px solid var(--grafiet);
  border-bottom: 1px solid var(--grafiet);
  min-width: 0;
}

.titelhoek__cel--breed {
  grid-column: span 2;
}

.titelhoek dt {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--potlood);
}

.titelhoek dd {
  margin: 0;
  font-family: var(--f-kop);
  font-size: 1rem;
  overflow-wrap: anywhere;
}

@media (max-width: 40rem) {
  .titelhoek {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}