/* Bijles Burak: Swiss/academic design system.
   Colors: white, near-black, navy accent, secondary gray. Nothing else. */

:root {
  --bg: #FFFFFF;
  --ink: #1F2937;
  --accent: #1E3A5F;
  --gray: #6B7280;
  --rule: #E5E7EB;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, p, dl, dd, ul {
  margin: 0;
}

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

a {
  color: var(--accent);
}

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

::selection {
  background: var(--accent);
  color: var(--bg);
}

/* Layout shell */

.shell {
  max-width: 68rem;
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* Navigation */

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  border-bottom: 1px solid var(--rule);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.25rem;
}

.logo {
  display: inline-flex;
  gap: 0.3rem;
  align-items: baseline;
  font-size: 1rem;
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: -0.01em;
}

.logo-mark {
  font-weight: 600;
  color: var(--ink);
}

.logo-name {
  font-weight: 400;
  color: var(--gray);
}

.topbar-links {
  display: none;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.topbar-cta {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
}

.topbar-cta:hover {
  text-decoration: underline;
}

.topbar-links a {
  display: block;
  font-size: 0.875rem;
  color: var(--gray);
  text-decoration: none;
  white-space: nowrap;
  padding-block: 0.25rem;
  border-bottom: 2px solid transparent;
}

.topbar-links a:hover {
  color: var(--accent);
  border-bottom-color: var(--rule);
}

/* De sectie waar je naartoe sprong, krijgt een navy markering in de kicker */
main section:target .kicker {
  color: var(--accent);
  border-left: 2px solid var(--accent);
  padding-left: 0.75rem;
  margin-left: -0.75rem;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 4rem;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

section.shell,
header.hero {
  padding-block: 3.5rem;
}

main section {
  border-top: 1px solid var(--rule);
}

/* Typography */

h1 {
  font-size: clamp(2rem, 5.5vw, 3.25rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 1.5rem;
}

h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.kicker {
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.lead,
.section-lead {
  font-size: 1.125rem;
  max-width: 42rem;
}

.section-lead {
  margin-bottom: 1.5rem;
}

.prose {
  max-width: 42rem;
}

.prose p + p {
  margin-top: 1rem;
}

/* Hero */

.hero {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.hero h1 {
  margin-bottom: 1rem;
}

.hero-photo {
  width: 16rem;
  aspect-ratio: 877 / 1114;
  object-fit: cover;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.625rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 150ms ease, border-color 150ms ease;
}

.btn-solid {
  background: var(--accent);
  color: var(--bg);
}

.btn-solid:hover {
  background: #17304F;
}

.btn-outline {
  border: 1px solid var(--rule);
  color: var(--ink);
}

.btn-outline:hover {
  border-color: var(--accent);
}

/* Stats */

.stats {
  display: grid;
  gap: 1.5rem;
  margin-top: 2.5rem;
  border-top: 1px solid var(--rule);
  padding-top: 2rem;
  max-width: 42rem;
}

.stat dt {
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.1;
}

.stat dd {
  font-size: 0.9375rem;
  color: var(--gray);
  margin-top: 0.25rem;
}

/* Subjects */

.subjects {
  display: grid;
  gap: 2rem;
}

.subject p {
  color: var(--ink);
  max-width: 34rem;
}

/* Dash lists */

.dash-list {
  list-style: none;
  padding: 0;
  max-width: 42rem;
  display: grid;
  gap: 1rem;
}

.dash-list li {
  position: relative;
  padding-left: 2rem;
}

.dash-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  background: var(--accent);
}

/* Reviews */

.reviews {
  display: grid;
  gap: 2rem;
  max-width: 42rem;
}

.review {
  margin: 0;
  border-left: 2px solid var(--accent);
  padding-left: 1.25rem;
}

.review blockquote {
  margin: 0;
}

.review figcaption {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: var(--gray);
}

/* Prices */

.price-list {
  max-width: 42rem;
}

.price-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.875rem;
  border-bottom: 1px solid var(--rule);
}

.price-row dd {
  font-weight: 600;
  white-space: nowrap;
}

.note {
  margin-top: 1.25rem;
  max-width: 42rem;
  color: var(--gray);
}

.price-outro {
  margin-top: 1.5rem;
  max-width: 42rem;
}

/* FAQ */

.faq {
  display: grid;
  gap: 1.75rem;
  max-width: 42rem;
}

.faq dt {
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.faq dd {
  margin: 0;
}

/* Contact */

.contact-meta {
  margin-top: 1.25rem;
  font-size: 0.9375rem;
  color: var(--gray);
}

/* Footer */

.footer {
  border-top: 1px solid var(--rule);
  padding-block: 2rem;
  font-size: 0.875rem;
  color: var(--gray);
}

.footer p {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
}

.footer a {
  color: var(--gray);
}

.footer a:hover {
  color: var(--accent);
}

/* Wider screens */

@media (min-width: 48rem) {
  .topbar-links {
    display: flex;
    margin-left: 2rem;
  }

  .topbar-cta {
    margin-left: 1.5rem;
  }

  .shell {
    padding-inline: 2rem;
  }

  section.shell {
    padding-block: 5rem;
  }

  header.hero {
    padding-block: 5rem 5.5rem;
    grid-template-columns: 1.4fr 1fr;
  }

  .hero-photo {
    width: 100%;
    max-width: 20rem;
    justify-self: end;
  }

  .subjects {
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem 3.5rem;
  }

  .stats {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Small screens: full-width CTAs so WhatsApp is one thumb-tap */

@media (max-width: 30rem) {
  .cta-row {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-photo {
    width: 11rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}