:root {
  /* Kleuren (op verzoek) */
  --color-purple: #7C3AED;   /* hoofd – paars */
  --color-lily:   #E8D7FF;   /* secundair – lily (zacht lila) */
  --color-blue:   #60A5FA;   /* accent – blauw voor contrast */

  /* Extra voor de ruimte-look */
  --color-midnight: #321952; /* bijna zwart/blauw */
  --color-nebula:   #5118a1; /* diep paars */

  --text: #e9e9f2;
  --muted: #cfcfe4;
  --card-bg: rgba(232, 215, 255, 0.1);   /* glas-effect */
  --card-stroke: rgba(124, 58, 237, 0.35); /* subtiele rand */
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  --radius: 20px;
}

/* Basisopmaak */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  color: var(--text);
  /* lichtbollen */
  background: radial-gradient(1000px 600px at 10% 5%, rgba(190, 129, 255, 0.25), transparent 70%),
              radial-gradient(800px 500px at 90% 7%, rgba(130, 23, 237, 0.25), transparent 70%),
              radial-gradient(900px 400px at 20% 15%, rgba(130, 23, 237, 0.25), transparent 70%),
              radial-gradient(600px 400px at 80% 28%, rgba(130, 23, 237, 0.25), transparent 70%),
              radial-gradient(900px 500px at 20% 33%, rgba(130, 23, 237, 0.25), transparent 70%),
              radial-gradient(800px 700px at 86% 40%, rgba(130, 23, 237, 0.25), transparent 70%),
              radial-gradient(700px 500px at 20% 44%, rgba(130, 23, 237, 0.25), transparent 70%),
              radial-gradient(800px 400px at 80% 53%, rgba(130, 23, 237, 0.25), transparent 70%),
              radial-gradient(600px 300px at 20% 60%, rgba(130, 23, 237, 0.25), transparent 70%),
              radial-gradient(800px 500px at 80% 68%, rgba(130, 23, 237, 0.25), transparent 70%),
              radial-gradient(1000px 700px at 20% 72%, rgba(130, 23, 237, 0.25), transparent 70%),
              radial-gradient(800px 500px at 80% 81%, rgba(130, 23, 237, 0.25), transparent 70%),
              radial-gradient(800px 500px at 20% 85%, rgba(130, 23, 237, 0.25), transparent 70%),
              radial-gradient(800px 500px at 80% 95%, rgba(130, 23, 237, 0.25), transparent 70%),
              linear-gradient(180deg, #1a0a42, #140a2a 40%, #0b1020);
  min-height: 100dvh;
  overflow-x: hidden;
}

/* Sterrenhemel */
.stars, .stars:before, .stars:after {
  position: fixed; inset: 0; content: ""; pointer-events: none; z-index: -1;
  background-image:
    radial-gradient(2px 2px at 20% 30%, rgba(255,255,255,0.85) 50%, transparent 52%),
    radial-gradient(1px 1px at 60% 20%, rgba(255,255,255,0.7) 50%, transparent 52%),
    radial-gradient(1.5px 1.5px at 80% 70%, rgba(255,255,255,0.7) 50%, transparent 55%),
    radial-gradient(1px 1px at 30% 80%, rgba(255,255,255,0.65) 50%, transparent 55%);
  animation: twinkle 8s linear infinite;
  opacity: 0.6;
}
.stars:before { animation-duration: 12s; opacity: 0.5; filter: blur(0.3px); }
.stars:after  { animation-duration: 16s; opacity: 0.45; filter: blur(0.6px); }
@keyframes twinkle { 0%,100% { transform: translateY(0); } 50% { transform: translateY(0.6rem); } }

/* Navigatie */
header {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(10px);
  background: linear-gradient(180deg, rgba(11,16,32,0.75), rgba(11,16,32,0.35));
  border-bottom: 1px solid rgba(96,165,250,0.25);
}
.nav {
  max-width: 1100px; margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display: inline-flex; gap: 10px; align-items: center; text-decoration: none; color: var(--text); }
.logo {
  width: 34px; height: 34px; border-radius: 50%;
  background: conic-gradient(from 210deg, var(--color-purple), var(--color-blue), var(--color-lily), var(--color-purple));
  box-shadow: 0 0 18px rgba(124,58,237,0.55);
}
.brand span { font-weight: 700; letter-spacing: 0.3px; }
nav a {
  color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 0.95rem;
  padding: 8px 10px; border-radius: 12px; transition: all .2s ease;
}
nav a:hover, nav a:focus { color: #fff; background: rgba(96,165,250,0.12); }

/* Sidebar button styling */
.menu-button {
  appearance: none; border: 0; cursor: pointer; font-weight: 700; letter-spacing: 0.3px;
  padding: 8px 12px; border-radius: 12px; color: #0b1020; font-size: 0.95rem;
  background: linear-gradient(135deg, var(--color-lily), var(--color-purple));
  box-shadow: 0 8px 20px rgba(124,58,237,0.12);
  display: inline-flex; align-items: center; gap: 8px;
}
.menu-button:hover { transform: translateY(-2px); filter: brightness(1.03); }

/* Hero */
.hero {
  max-width: 1100px; margin: 0 auto; padding: 64px 20px 80px;
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 36px; align-items: center;
}
.hero h1 {
  font-size: clamp(2.2rem, 3.2vw + 1rem, 4rem);
  line-height: 1.08; margin: 0 0 12px;
  background: linear-gradient(135deg, var(--color-lily), #ffffff 25%, var(--color-blue) 55%, var(--color-purple) 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: 0 0 30px rgba(124,58,237,0.25);
}
.hero p.lead { font-size: 1.15rem; color: var(--muted); margin: 0 0 26px; }
.cta {
  display: inline-flex; gap: 10px; align-items: center; text-decoration: none; font-weight: 700;
  padding: 12px 18px; border-radius: 999px; color: #0b1020;
  background: linear-gradient(135deg, var(--color-lily), var(--color-blue));
  box-shadow: var(--shadow);
}
.cta:hover { filter: brightness(1.05); }

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px; backdrop-filter: blur(14px);
}

/* Secties */
section { padding: 70px 20px; }
.container { max-width: 1100px; margin: 0 auto; }
.section-title {
  font-size: clamp(1.4rem, 1.2vw + 1rem, 2rem);
  margin: 0 0 12px; letter-spacing: 0.4px;
}
.section-sub { color: var(--muted); margin: 0 0 30px; }

.small-tekst {
  font-size: 0.75rem; color: var(--color-lily); margin-top: -10px; margin-bottom: 20px;
}

.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

/* Lijsten en badges */
.badges { display: flex; flex-wrap: wrap; gap: 10px; margin: 12px 0 0; }
.badge { padding: 6px 10px; border-radius: 999px; font-size: 0.85rem; color: #0b1020; background: var(--color-lily); border: 1px solid rgba(124,58,237,0.35); }

/* FAQ */
details { border: 1px solid rgba(96,165,250,0.25); border-radius: 14px; padding: 14px 16px; background: rgba(11,16,32,0.4); }
details + details { margin-top: 12px; }
summary { cursor: pointer; font-weight: 600; }
summary::-webkit-details-marker { display: none; }

/* Contact */
form { display: grid; gap: 14px; }
label { font-weight: 600; font-size: 0.95rem; }
input, textarea {
  width: 100%; padding: 12px 14px; border-radius: 12px;
  border: 1px solid rgba(96,165,250,0.35); color: var(--text);
  background: rgba(11,16,32,0.65);
}
input:focus, textarea:focus { outline: 2px solid rgba(96,165,250,0.6); }
textarea { min-height: 140px; resize: vertical; }
.btn {
  appearance: none; border: 0; cursor: pointer; font-weight: 800; letter-spacing: 0.3px;
  padding: 12px 16px; border-radius: 12px; color: #0b1020;
  background: linear-gradient(135deg, var(--color-purple), var(--color-blue));
  box-shadow: var(--shadow);
}
.btn:hover { filter: brightness(1.08); }

/* Sticky contact knop */
.float-contact {
  position: fixed; right: 18px; bottom: 18px; z-index: 90;
  padding: 12px 14px; border-radius: 999px; text-decoration: none; color: #0b1020; font-weight: 800;
  background: linear-gradient(135deg, var(--color-lily), var(--color-blue));
  box-shadow: var(--shadow);
}

/* Footer */
footer { padding: 40px 20px 60px; color: var(--muted); border-top: 1px solid rgba(96,165,250,0.25); background: linear-gradient(180deg, rgba(96,165,250,0.05), transparent 35%); }
.socials { display: flex; gap: 12px; }
.socials a { display: inline-flex; width: 38px; height: 38px; align-items: center; justify-content: center; border-radius: 10px; background: rgba(11,16,32,0.6); border: 1px solid rgba(96,165,250,0.25); color: var(--muted); text-decoration: none; }
.socials a:hover { color: white; border-color: rgba(96,165,250,0.55); }

/* Sidebar Menu */
#sidebar {
  position: fixed; right: 0; top: 0; width: 280px; height: 100dvh; z-index: 99;
  background: linear-gradient(180deg, rgba(11,16,32,0.98), rgba(28, 4, 54, 0.877));
  border-left: 1px solid rgba(96,165,250,0.25);
  backdrop-filter: blur(10px);
  display: flex; flex-direction: column; gap: 12px; padding: 0;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
#sidebar.is-open { transform: translateX(0); }
#sidebar a, #sidebar button {
  color: var(--muted); text-decoration: none; padding: 14px 20px; font-size: 1rem;
  border: none; background: none; cursor: pointer; text-align: left; transition: all 0.18s ease;
}
#sidebar a:hover, #sidebar a:focus, #sidebar button:hover {
  color: #fff;
  background: linear-gradient(90deg, rgba(124,58,237,0.12), rgba(124,58,237,0.04));
  box-shadow: 0 10px 30px rgba(124,58,237,0.12);
  border-left: 4px solid var(--color-purple);
  padding-left: 16px;
}
#sidebar [data-sidebar-close] {
  align-self: flex-end; padding: 12px 16px; font-size: 1.4rem; color: var(--muted);
  margin-top: 12px; margin-right: 8px; border-radius: 8px;
}

[data-sidebar-overlay] {
  position: fixed; inset: 0; z-index: 98;
  background: rgba(0,0,0,0.4); backdrop-filter: blur(4px);
  opacity: 0; visibility: hidden; transition: opacity 0.32s ease, visibility 0.32s ease;
}
[data-sidebar-overlay].is-visible {
  opacity: 1; visibility: visible;
}

body.no-scroll { overflow: hidden; }

/* Responsive */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 24px; padding: 44px 20px 64px; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .nav-menu { display: none; }
  .menu-button { display: block; }
}

/* Desktop: ensure the sidebar and overlay are hidden (sidebar active only on mobile) */
@media (min-width: 901px) {
  #sidebar { display: none !important; }
  [data-sidebar-overlay] { display: none !important; }
  .menu-button { display: none; }
}