/* ==========================================================================
   De Studiekamer — stylesheet
   Design tokens gebaseerd op de aangeleverde logo's (marineblauw / oranje / crème)
   ========================================================================== */

:root {
  /* Kleuren */
  --color-primary: #1E2A47;
  --color-primary-dark: #141D33;
  --color-accent: #D9773E;
  --color-accent-hover: #C2632B;
  --color-bg: #FFFFFF;
  --color-bg-warm: #FBF3E4;
  --color-surface: #FCF8F1;
  --color-text: #1E2A47;
  --color-text-secondary: #5B6478;
  --color-border: #E4DFD3;
  --color-dark-surface: #101A30;
  --color-on-dark: #F3EFE6;
  --color-on-dark-secondary: #B9C0D1;

  /* Typografie */
  --font-heading: "Poppins", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;

  --fs-h1: clamp(2rem, 1.5rem + 2vw, 2.75rem);
  --fs-h2: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --fs-h3: 1.375rem;
  --fs-body: 1.0625rem;
  --fs-small: 0.875rem;
  --fs-button: 0.9375rem;

  /* Spacing / vorm */
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 3px rgba(30, 42, 71, 0.08);
  --shadow-md: 0 4px 16px rgba(30, 42, 71, 0.10);
  --container-width: 1200px;
  --section-padding: 96px;
  --section-padding-mobile: 56px;
}

/* ==========================================================================
   Reset & basis
   ========================================================================== */

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

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

h1, h2, h3 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.2;
  margin: 0 0 0.6em;
}

h1 { font-size: var(--fs-h1); font-weight: 700; }
h2 { font-size: var(--fs-h2); font-weight: 600; }
h3 { font-size: var(--fs-h3); font-weight: 600; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

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

small, .text-small { font-size: var(--fs-small); }

.text-secondary { color: var(--color-text-secondary); }

/* Zichtbare focus states overal */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* Skip-link voor toetsenbordgebruikers */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75em 1.25em;
  z-index: 1000;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus {
  left: 0;
}

/* ==========================================================================
   Layout helpers
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: 20px;
}

.section {
  padding-block: var(--section-padding-mobile);
}

@media (min-width: 768px) {
  .section { padding-block: var(--section-padding); }
}

.section--warm { background: var(--color-bg-warm); }
.section--white { background: var(--color-bg); }

.section-intro {
  max-width: 640px;
  margin-bottom: 2.5rem;
}

.section-eyebrow {
  display: inline-block;
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--fs-small);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.75rem;
}

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

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  font-family: var(--font-heading);
  font-size: var(--fs-button);
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius);
  padding: 0.9em 1.6em;
  border: 2px solid transparent;
  cursor: pointer;
  min-height: 48px;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover { background: var(--color-accent-hover); }
.btn-primary:active { transform: translateY(1px); }

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-secondary:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn-on-dark {
  background: transparent;
  color: var(--color-on-dark);
  border-color: var(--color-on-dark-secondary);
}
.btn-on-dark:hover {
  background: var(--color-on-dark);
  color: var(--color-primary);
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 12px;
}

.site-header__logo {
  display: flex;
  align-items: center;
}

.site-header__logo img {
  height: 48px;
  width: auto;
}

@media (min-width: 992px) {
  .site-header__logo img { height: 56px; }
}

.site-nav {
  display: none;
}

@media (min-width: 992px) {
  .site-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
  }
  .site-nav__list {
    display: flex;
    gap: 1.75rem;
    list-style: none;
    margin: 0;
    padding: 0;
  }
  .site-nav__list a {
    text-decoration: none;
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: var(--fs-button);
    color: var(--color-primary);
    padding: 0.4em 0.1em;
    border-bottom: 2px solid transparent;
  }
  .site-nav__list a:hover,
  .site-nav__list a:focus-visible {
    border-bottom-color: var(--color-accent);
  }
}

.site-header__cta {
  display: none;
}
@media (min-width: 992px) {
  .site-header__cta { display: inline-flex; }
}

.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  width: 48px;
  height: 48px;
  cursor: pointer;
}
@media (min-width: 992px) {
  .menu-toggle { display: none; }
}

.menu-toggle__icon,
.menu-toggle__icon::before,
.menu-toggle__icon::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-primary);
  position: relative;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.menu-toggle__icon::before,
.menu-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
}
.menu-toggle__icon::before { top: -7px; }
.menu-toggle__icon::after { top: 7px; }

.menu-toggle[aria-expanded="true"] .menu-toggle__icon { background: transparent; }
.menu-toggle[aria-expanded="true"] .menu-toggle__icon::before { transform: rotate(45deg); top: 0; }
.menu-toggle[aria-expanded="true"] .menu-toggle__icon::after { transform: rotate(-45deg); top: 0; }

.mobile-nav {
  display: none;
  background: #fff;
  border-top: 1px solid var(--color-border);
}
.mobile-nav.is-open { display: block; }
@media (min-width: 992px) {
  .mobile-nav { display: none !important; }
}

.mobile-nav__list {
  list-style: none;
  margin: 0;
  padding: 8px 20px 20px;
}
.mobile-nav__list li + li { margin-top: 4px; }
.mobile-nav__list a {
  display: block;
  padding: 0.85em 0.25em;
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-border);
}
.mobile-nav__cta { margin-top: 16px; }
.mobile-nav__cta .btn { width: 100%; }

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  background: var(--color-bg-warm);
  position: relative;
  overflow: hidden;
}

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

@media (min-width: 900px) {
  .hero__inner {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
  }
}

.hero__glow {
  position: absolute;
  top: -120px;
  right: -120px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(217,119,62,0.28) 0%, rgba(217,119,62,0) 70%);
  pointer-events: none;
}

.hero__eyebrow {
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--fs-small);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.75rem;
  display: inline-block;
}

.hero__lead {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 46ch;
  margin-bottom: 2rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.hero__visual {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  position: relative;
}
.hero__visual img { width: 100%; height: auto; }

/* ==========================================================================
   USP's
   ========================================================================== */

.usp-grid {
  display: grid;
  gap: 1.75rem;
  grid-template-columns: 1fr;
}

@media (min-width: 700px) {
  .usp-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1000px) {
  .usp-grid { grid-template-columns: repeat(4, 1fr); }
}

.usp {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.usp__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-bg-warm);
  color: var(--color-primary);
}
.usp__icon svg { width: 24px; height: 24px; }

.usp h3 { font-size: 1.1rem; margin-bottom: 0.35em; }
.usp p { color: var(--color-text-secondary); font-size: 0.975rem; }

/* ==========================================================================
   Aanbod (cards)
   ========================================================================== */

.offer-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 800px) {
  .offer-grid { grid-template-columns: repeat(3, 1fr); }
}

.offer-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.offer-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}
.offer-card__icon svg { width: 26px; height: 26px; }

.offer-card h3 { margin-bottom: 0.25em; }
.offer-card p { color: var(--color-text-secondary); flex-grow: 1; }

.offer-card__meta {
  font-size: var(--fs-small);
  color: var(--color-primary);
  font-weight: 600;
  font-family: var(--font-heading);
}

/* ==========================================================================
   Werkwijze (steps)
   ========================================================================== */

.steps {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
  counter-reset: step;
}

@media (min-width: 800px) {
  .steps {
    grid-template-columns: repeat(4, 1fr);
    position: relative;
  }
  .steps::before {
    content: "";
    position: absolute;
    top: 22px;
    left: 8%;
    right: 8%;
    height: 2px;
    background: var(--color-border);
  }
}

.step { position: relative; }

.step__number {
  counter-increment: step;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 600;
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}
.step__number::before { content: counter(step); }

.step h3 { font-size: 1.05rem; }
.step p { color: var(--color-text-secondary); font-size: 0.975rem; }

/* ==========================================================================
   Aanpak / Over ons
   ========================================================================== */

.about {
  max-width: 760px;
}
.about p { font-size: 1.0625rem; color: var(--color-text-secondary); }
.about p:first-of-type { color: var(--color-text); font-size: 1.15rem; }

/* ==========================================================================
   FAQ
   ========================================================================== */

.faq-list {
  max-width: 760px;
  border-top: 1px solid var(--color-border);
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item__question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1.25rem 0.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--color-primary);
  cursor: pointer;
}

.faq-item__icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  position: relative;
}
.faq-item__icon::before,
.faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--color-accent);
  border-radius: 2px;
}
.faq-item__icon::before {
  width: 100%; height: 2px; top: 50%; left: 0; transform: translateY(-50%);
}
.faq-item__icon::after {
  width: 2px; height: 100%; left: 50%; top: 0; transform: translateX(-50%);
  transition: transform 0.15s ease;
}
.faq-item__question[aria-expanded="true"] .faq-item__icon::after {
  transform: translateX(-50%) scaleY(0);
}

.faq-item__answer {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.2s ease;
}
.faq-item__answer[data-open="true"] {
  max-height: 400px;
}
.faq-item__answer-inner {
  padding: 0 0.25rem 1.25rem;
  color: var(--color-text-secondary);
}

/* ==========================================================================
   Contact / CTA
   ========================================================================== */

.contact-grid {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 900px) {
  .contact-grid { grid-template-columns: 1fr 1fr; align-items: start; }
}

.contact-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.contact-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.contact-list a {
  text-decoration: none;
  font-weight: 500;
}
.contact-list a:hover { text-decoration: underline; }

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: var(--color-dark-surface);
  color: var(--color-on-dark-secondary);
}

.site-footer__top {
  display: grid;
  gap: 2.5rem;
  padding-block: 56px;
  grid-template-columns: 1fr;
}

@media (min-width: 800px) {
  .site-footer__top { grid-template-columns: 1.2fr 1fr 1fr; }
}

.site-footer__brand-card {
  background: var(--color-surface);
  display: inline-flex;
  padding: 14px 18px;
  border-radius: var(--radius);
  margin-bottom: 1rem;
}
.site-footer__brand-card img {
  height: 40px;
  width: auto;
}

.site-footer__desc {
  max-width: 34ch;
  font-size: 0.975rem;
}

.site-footer h2 {
  color: var(--color-on-dark);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 1.1rem;
}

.site-footer__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.site-footer__list a {
  color: var(--color-on-dark-secondary);
  text-decoration: none;
  font-size: 0.975rem;
}
.site-footer__list a:hover,
.site-footer__list a:focus-visible {
  color: var(--color-on-dark);
  text-decoration: underline;
}

.site-footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-block: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
  font-size: var(--fs-small);
}

.site-footer__bottom a {
  color: var(--color-on-dark-secondary);
}

/* ==========================================================================
   Placeholder-inhoud markering
   ========================================================================== */

.placeholder {
  background: rgba(217,119,62,0.12);
  padding: 0.05em 0.4em;
  border-radius: 4px;
  font-style: italic;
}