/* Extra zichtbare ingangen voor het hoofdstuk Nevels + regenboog-navigatie */
.nevel-highlight-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 217, 102, .42);
  background:
    radial-gradient(circle at 18% 20%, rgba(255, 154, 216, .22), transparent 30%),
    radial-gradient(circle at 82% 28%, rgba(91, 177, 255, .18), transparent 28%),
    linear-gradient(135deg, rgba(13, 18, 38, .96), rgba(6, 8, 18, .98));
  box-shadow: 0 20px 55px rgba(0,0,0,.28), inset 0 0 45px rgba(255,255,255,.035);
}
.nevel-highlight-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle, rgba(255,255,255,.52) 0 1px, transparent 1.6px),
    radial-gradient(circle, rgba(255,217,102,.42) 0 1px, transparent 1.7px);
  background-size: 42px 42px, 67px 67px;
  opacity: .24;
}
.nevel-highlight-panel > * { position: relative; z-index: 1; }
.nevel-feature-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(260px, .85fr); gap: 18px; align-items: stretch; }
.nevel-feature-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 16px; }
.nevel-feature-list a, .nevel-menu-button {
  display: block;
  padding: 12px 14px;
  border-radius: 16px;
  text-decoration: none;
  color: #fff;
  background: rgba(255,255,255,.075);
  border: 1px solid rgba(255,255,255,.14);
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}
.nevel-feature-list a:hover, .nevel-menu-button:hover { transform: translateY(-2px); border-color: rgba(255,217,102,.65); background: rgba(255,255,255,.11); }
.nevel-mini-card { border-radius: 20px; padding: 18px; background: rgba(0,0,0,.24); border: 1px solid rgba(255,255,255,.13); }
.nevel-mini-card strong { color: #ffd966; }
.nevel-topic-card { border-color: rgba(255,217,102,.38) !important; background: radial-gradient(circle at top left, rgba(255,154,216,.14), transparent 45%), rgba(255,255,255,.045) !important; }

/* Regenboognavigatie voor de hoofdroute Sterrenstelsels / Animaties / Nevels */
:root {
  --ruimte-rainbow: linear-gradient(90deg,
    #ff4fd8 0%,
    #ff8a3d 16%,
    #ffe66b 32%,
    #54ff9a 48%,
    #52d7ff 64%,
    #8c7cff 80%,
    #ff4fd8 100%);
}

.site-nav a[href="/sterrenstelsels.html"],
.site-nav a[href="/animatie-sterrenstelsels.html"],
.site-nav a[href="/nevels.html"],
.top-nav a[href="/sterrenstelsels.html"],
.top-nav a[href="/animatie-sterrenstelsels.html"],
.top-nav a[href="/nevels.html"],
.nevel-toplink,
.link-chip-row a[href="/sterrenstelsels.html"],
.link-chip-row a[href="/animatie-sterrenstelsels.html"],
.link-chip-row a[href="/nevels.html"] {
  position: relative;
  isolation: isolate;
  font-weight: 900 !important;
  color: #fff !important;
  border: 1px solid rgba(255,255,255,.24) !important;
  background:
    linear-gradient(rgba(6,8,18,.86), rgba(6,8,18,.86)) padding-box,
    var(--ruimte-rainbow) border-box !important;
  box-shadow: 0 0 18px rgba(91,177,255,.22), 0 0 28px rgba(255,79,216,.12) !important;
}

.site-nav a[href="/sterrenstelsels.html"]::after,
.site-nav a[href="/animatie-sterrenstelsels.html"]::after,
.site-nav a[href="/nevels.html"]::after,
.top-nav a[href="/sterrenstelsels.html"]::after,
.top-nav a[href="/animatie-sterrenstelsels.html"]::after,
.top-nav a[href="/nevels.html"]::after,
.nevel-toplink::after {
  content: "";
  position: absolute;
  left: 12%;
  right: 12%;
  bottom: 5px;
  height: 2px;
  border-radius: 999px;
  background: var(--ruimte-rainbow);
  opacity: .95;
  box-shadow: 0 0 12px rgba(82,215,255,.55);
}

.site-nav a[href="/sterrenstelsels.html"]:hover,
.site-nav a[href="/animatie-sterrenstelsels.html"]:hover,
.site-nav a[href="/nevels.html"]:hover,
.top-nav a[href="/sterrenstelsels.html"]:hover,
.top-nav a[href="/animatie-sterrenstelsels.html"]:hover,
.top-nav a[href="/nevels.html"]:hover,
.nevel-toplink:hover {
  transform: translateY(-1px);
  filter: saturate(1.14) brightness(1.08);
}

/* Opvallende regenboogrand voor de belangrijkste kaarten in Alles op een rij en homepage */
.menu-card:has(a[href="/animatie-sterrenstelsels.html"]),
.menu-card:has(a[href="/nevels.html"]),
.topic-card[href="/sterrenstelsels.html"],
.topic-card[href="/animatie-sterrenstelsels.html"],
.topic-card[href="/nevels.html"] {
  position: relative;
  overflow: hidden;
  border: 1px solid transparent !important;
  background:
    linear-gradient(135deg, rgba(13,18,38,.96), rgba(6,8,18,.98)) padding-box,
    var(--ruimte-rainbow) border-box !important;
  box-shadow: 0 18px 45px rgba(0,0,0,.24), 0 0 26px rgba(82,215,255,.12) !important;
}

.menu-card:has(a[href="/animatie-sterrenstelsels.html"])::before,
.menu-card:has(a[href="/nevels.html"])::before,
.topic-card[href="/sterrenstelsels.html"]::before,
.topic-card[href="/animatie-sterrenstelsels.html"]::before,
.topic-card[href="/nevels.html"]::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .16;
  background:
    radial-gradient(circle at 15% 20%, #ff4fd8, transparent 26%),
    radial-gradient(circle at 78% 18%, #52d7ff, transparent 25%),
    radial-gradient(circle at 55% 82%, #ffe66b, transparent 24%);
}

.menu-card:has(a[href="/animatie-sterrenstelsels.html"]) > *,
.menu-card:has(a[href="/nevels.html"]) > *,
.topic-card[href="/sterrenstelsels.html"] > *,
.topic-card[href="/animatie-sterrenstelsels.html"] > *,
.topic-card[href="/nevels.html"] > * {
  position: relative;
  z-index: 1;
}

.menu-card:has(a[href="/animatie-sterrenstelsels.html"]) h2,
.menu-card:has(a[href="/nevels.html"]) h2,
.topic-card[href="/sterrenstelsels.html"] .title,
.topic-card[href="/animatie-sterrenstelsels.html"] .title,
.topic-card[href="/nevels.html"] .title {
  display: inline-block;
  color: transparent !important;
  background: var(--ruimte-rainbow);
  -webkit-background-clip: text;
  background-clip: text;
  font-weight: 900;
}

.menu-card:has(a[href="/animatie-sterrenstelsels.html"]) .menu-link-grid a,
.menu-card:has(a[href="/nevels.html"]) .menu-link-grid a {
  border-color: rgba(255,255,255,.18);
}

@media (max-width: 760px) {
  .nevel-feature-grid { grid-template-columns: 1fr; }
  .nevel-feature-list { grid-template-columns: 1fr; }
  .site-nav a[href="/sterrenstelsels.html"],
  .site-nav a[href="/animatie-sterrenstelsels.html"],
  .site-nav a[href="/nevels.html"],
  .top-nav a[href="/sterrenstelsels.html"],
  .top-nav a[href="/animatie-sterrenstelsels.html"],
  .top-nav a[href="/nevels.html"] {
    box-shadow: 0 0 10px rgba(91,177,255,.18) !important;
  }
}

/* Extra fix: regenboog ook op de echte topnavigatie van de live site */
.topnav__links a[href="/sterrenstelsels.html"],
.topnav__links a[href="/animatie-sterrenstelsels.html"],
.topnav__links a[href="/nevels.html"],
.topnav__links a[href="sterrenstelsels.html"],
.topnav__links a[href="animatie-sterrenstelsels.html"],
.topnav__links a[href="nevels.html"],
a[href="/sterrenstelsels.html"].nav-rainbow,
a[href="/animatie-sterrenstelsels.html"].nav-rainbow,
a[href="/nevels.html"].nav-rainbow {
  position: relative;
  isolation: isolate;
  font-weight: 900 !important;
  color: #ffffff !important;
  border: 1px solid transparent !important;
  border-radius: 999px !important;
  background:
    linear-gradient(rgba(7,10,24,.90), rgba(7,10,24,.90)) padding-box,
    var(--ruimte-rainbow) border-box !important;
  box-shadow:
    0 0 16px rgba(82,215,255,.25),
    0 0 24px rgba(255,79,216,.16) !important;
  text-decoration: none !important;
}

.topnav__links a[href="/sterrenstelsels.html"]::after,
.topnav__links a[href="/animatie-sterrenstelsels.html"]::after,
.topnav__links a[href="/nevels.html"]::after,
.topnav__links a[href="sterrenstelsels.html"]::after,
.topnav__links a[href="animatie-sterrenstelsels.html"]::after,
.topnav__links a[href="nevels.html"]::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 6px;
  height: 2px;
  border-radius: 999px;
  background: var(--ruimte-rainbow);
  opacity: .95;
  box-shadow: 0 0 12px rgba(82,215,255,.55);
}

.topnav__links a[href="/sterrenstelsels.html"]:hover,
.topnav__links a[href="/animatie-sterrenstelsels.html"]:hover,
.topnav__links a[href="/nevels.html"]:hover,
.topnav__links a[href="sterrenstelsels.html"]:hover,
.topnav__links a[href="animatie-sterrenstelsels.html"]:hover,
.topnav__links a[href="nevels.html"]:hover {
  transform: translateY(-1px);
  filter: saturate(1.18) brightness(1.08);
}

/* Regenboog op CTA-knoppen op de homepage */
.btn[href="/sterrenstelsels.html"],
.btn[href="/animatie-sterrenstelsels.html"],
.btn[href="/nevels.html"],
a.btn[href="/sterrenstelsels.html"],
a.btn[href="/animatie-sterrenstelsels.html"],
a.btn[href="/nevels.html"] {
  border: 1px solid transparent !important;
  background:
    linear-gradient(rgba(7,10,24,.88), rgba(7,10,24,.88)) padding-box,
    var(--ruimte-rainbow) border-box !important;
  color: #fff !important;
  font-weight: 900 !important;
  box-shadow: 0 0 22px rgba(82,215,255,.18), 0 0 24px rgba(255,79,216,.12) !important;
}

/* Regenboog op menu-kaarten, ook zonder :has ondersteuning */
.menu-card.nevel-menu-card,
.menu-card.rainbow-menu-card,
.topic-card.nevel-topic-card,
.topic-card.rainbow-topic-card {
  border: 1px solid transparent !important;
  background:
    linear-gradient(135deg, rgba(13,18,38,.96), rgba(6,8,18,.98)) padding-box,
    var(--ruimte-rainbow) border-box !important;
  box-shadow: 0 18px 45px rgba(0,0,0,.24), 0 0 26px rgba(82,215,255,.12) !important;
}

/* Extra robuust: kleur titels/linkteksten die letterlijk deze onderdelen zijn */
.topic-card[href="/sterrenstelsels.html"] .title,
.topic-card[href="/animatie-sterrenstelsels.html"] .title,
.topic-card[href="/nevels.html"] .title,
.menu-card h2 {
  font-weight: 900;
}