:root {
  --ink: #172022;
  --muted: #526163;
  --line: #d8e2df;
  --paper: #f7faf8;
  --white: #ffffff;
  --teal: #0f766e;
  --teal-dark: #0a4f4b;
  --gold: #d9a417;
  --clay: #a94c3a;
  --shadow: 0 18px 50px rgba(23, 32, 34, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

button,
input,
select,
textarea {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 18px 44px;
  color: var(--white);
  background: linear-gradient(180deg, rgba(12, 18, 19, 0.78), rgba(12, 18, 19, 0.18));
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 2px solid currentColor;
  border-radius: 6px;
  font-size: 14px;
}

.nav-links {
  display: flex;
  justify-content: center;
  gap: 28px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 15px;
  font-weight: 650;
}

.nav-links a,
.footer-links a {
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

.nav-links a:hover,
.footer-links a:hover {
  text-decoration: underline;
}

.header-cta {
  padding: 11px 16px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
}

.hero {
  position: relative;
  min-height: 86vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: var(--white);
}

.hero-bg,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-bg {
  background-image: url("assets/hero-kozijnen.png");
  background-position: center;
  background-size: cover;
  transform: scale(1.01);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(10, 16, 16, 0.84) 0%, rgba(10, 16, 16, 0.58) 38%, rgba(10, 16, 16, 0.1) 72%),
    linear-gradient(180deg, rgba(10, 16, 16, 0.42) 0%, rgba(10, 16, 16, 0.12) 50%, rgba(10, 16, 16, 0.68) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(680px, calc(100% - 40px));
  margin-left: max(28px, calc((100vw - 1160px) / 2));
  padding-top: 94px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 640px;
  margin-bottom: 22px;
  font-size: 62px;
  line-height: 1.02;
  letter-spacing: 0;
  overflow-wrap: break-word;
}

h2 {
  margin-bottom: 16px;
  font-size: 42px;
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 590px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 20px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 32px 0;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 6px;
  padding: 13px 18px;
  cursor: pointer;
  font-weight: 850;
  line-height: 1.1;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  color: var(--ink);
  background: var(--gold);
  box-shadow: 0 12px 30px rgba(217, 164, 23, 0.32);
}

.button.secondary {
  color: var(--white);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.42);
}

.button.dark {
  color: var(--white);
  background: var(--ink);
}

.full-width {
  width: 100%;
}

.trust-row {
  display: grid;
  max-width: 640px;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 34px 0 0;
}

.trust-row div {
  border-left: 3px solid var(--gold);
  padding-left: 14px;
}

.trust-row dt {
  font-size: 24px;
  font-weight: 900;
}

.trust-row dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.section {
  padding: 92px 0;
}

.section-inner {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.quick-order {
  padding: 26px 0;
  background: var(--white);
  box-shadow: 0 -10px 38px rgba(23, 32, 34, 0.08);
}

.quick-order-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 24px;
}

.quick-order h2 {
  margin-bottom: 0;
  font-size: 28px;
}

.section-heading {
  max-width: 730px;
  margin-bottom: 34px;
}

.section-heading p,
.form-copy > p {
  color: var(--muted);
  font-size: 18px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.product-card {
  min-height: 340px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 28px rgba(23, 32, 34, 0.06);
}

.accent-card {
  border-color: rgba(15, 118, 110, 0.28);
  box-shadow: var(--shadow);
}

.product-label {
  display: inline-block;
  margin-bottom: 20px;
  border-radius: 999px;
  padding: 6px 10px;
  color: var(--teal-dark);
  background: rgba(15, 118, 110, 0.1);
  font-size: 13px;
  font-weight: 850;
}

.product-card p {
  color: var(--muted);
}

.product-card ul {
  display: grid;
  gap: 9px;
  margin: 24px 0 0;
  padding-left: 20px;
}

.product-card li::marker {
  color: var(--clay);
}

.split-section {
  background: var(--ink);
  color: var(--white);
}

.split-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  align-items: start;
}

.split-section .section-heading p {
  color: rgba(255, 255, 255, 0.72);
}

.timeline {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 66px 1fr;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.timeline li:first-child {
  padding-top: 0;
}

.timeline span {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: var(--ink);
  background: var(--gold);
  font-weight: 900;
}

.timeline p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.72);
}

.proof-section {
  padding: 58px 0;
  background: var(--teal);
  color: var(--white);
}

.proof-grid {
  display: grid;
  grid-template-columns: 220px 1fr 220px;
  align-items: center;
  gap: 32px;
}

.metric {
  display: grid;
  gap: 4px;
}

.metric strong {
  font-size: 44px;
  line-height: 1;
}

.metric span {
  color: rgba(255, 255, 255, 0.82);
}

.quote {
  border-left: 3px solid var(--gold);
  padding-left: 28px;
}

.quote p {
  margin-bottom: 10px;
  font-size: 22px;
}

.quote span {
  color: rgba(255, 255, 255, 0.78);
}

.form-section {
  background:
    linear-gradient(90deg, rgba(15, 118, 110, 0.08), transparent 44%),
    var(--paper);
}

.form-grid {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  gap: 44px;
  align-items: start;
}

.estimate-panel {
  max-width: 360px;
  display: grid;
  gap: 4px;
  margin-top: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  background: var(--white);
  box-shadow: 0 10px 28px rgba(23, 32, 34, 0.06);
}

.estimate-panel span,
.estimate-panel small {
  color: var(--muted);
}

.estimate-panel strong {
  color: var(--teal-dark);
  font-size: 40px;
  line-height: 1.05;
}

.quote-form {
  display: grid;
  gap: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 26px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #c9d6d3;
  border-radius: 6px;
  padding: 13px 12px;
  color: var(--ink);
  background: #fbfdfc;
  font-weight: 500;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--teal);
  outline: 3px solid rgba(15, 118, 110, 0.16);
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--teal-dark);
  font-weight: 750;
}

.site-footer {
  padding: 42px 0;
  color: rgba(255, 255, 255, 0.84);
  background: #101718;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
}

.footer-brand {
  color: var(--white);
}

.site-footer p {
  max-width: 420px;
  margin: 14px 0 0;
}

.footer-links {
  display: grid;
  gap: 8px;
  justify-items: end;
}

@media (max-width: 880px) {
  .site-header {
    grid-template-columns: 1fr auto;
    padding: 14px 20px;
  }

  .nav-links {
    display: none;
  }

  .hero {
    min-height: 84vh;
  }

  .hero-content {
    width: min(620px, calc(100% - 32px));
    margin: 0 auto;
    padding-top: 110px;
  }

  h1 {
    font-size: 40px;
    line-height: 1.07;
  }

  h2 {
    font-size: 32px;
  }

  .hero-copy {
    font-size: 18px;
  }

  .quick-order-grid,
  .product-grid,
  .split-grid,
  .proof-grid,
  .form-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .proof-grid {
    gap: 24px;
  }

  .footer-links {
    justify-items: start;
  }
}

@media (max-width: 560px) {
  .header-cta {
    display: none;
  }

  .site-header {
    grid-template-columns: 1fr;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
  }

  .hero-bg {
    background-position: 58% center;
  }

  .hero-overlay {
    background:
      linear-gradient(90deg, rgba(10, 16, 16, 0.88), rgba(10, 16, 16, 0.52)),
      linear-gradient(180deg, rgba(10, 16, 16, 0.36), rgba(10, 16, 16, 0.74));
  }

  .hero-actions,
  .field-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 36px;
  }

  .trust-row {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 66px 0;
  }

  .quick-order {
    padding: 22px 0;
  }

  .quote-form {
    padding: 20px;
  }

  .timeline li {
    grid-template-columns: 52px 1fr;
    gap: 14px;
  }
}

@media (max-width: 380px) {
  h1 {
    font-size: 32px;
  }
}

@media (max-width: 340px) {
  h1 {
    font-size: 30px;
  }
}