/* ===== Tokens ===== */
:root {
  --bg: #ffffff;
  --text: #0e0e11;
  --muted: #6b7280;
  --brand: #6b4bd9; /* warm paars */
  --brand-2: #8e79ff; /* lichtere paars-tint */
  --surface: #f7f7fb;
  --border: #e6e6ee;

  --radius: 14px;
  --shadow: 0 6px 22px rgba(0, 0, 0, 0.06);

  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-6: 2rem;

  --fs-0: 0.875rem;
  --fs-1: 1rem;
  --fs-2: 1.125rem;
  --fs-3: 1.375rem;
  --fs-4: 1.75rem;
  --fs-5: 2.25rem;
}

html.dark {
  --bg: #0f1115;
  --text: #eef0f6;
  --muted: #a6adbb;
  --brand: #a794ff;
  --brand-2: #c6bbff;
  --surface: #161922;
  --border: #222635;
  --shadow: 0 6px 22px rgba(0, 0, 0, 0.35);
}

/* ===== Base ===== */
* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 var(--fs-1) / 1.6 system-ui, -apple-system, Segoe UI, Roboto,
    "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
.wrap {
  width: min(1100px, 100% - 2 * var(--space-4));
  margin-inline: auto;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(130%) blur(6px);
  background: color-mix(in oklab, var(--bg) 85%, transparent);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding-block: var(--space-3);
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  text-decoration: none;
  color: inherit;
}
.brand .logo {
  font-size: 1.2rem;
}
.brand .title {
  font-weight: 700;
  font-size: var(--fs-2);
}
.brand .sub {
  font-size: var(--fs-0);
  color: var(--muted);
}

.toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-left: auto;
}
.toolbar input[type="search"],
.toolbar select {
  height: 40px;
  padding: 0 var(--space-3);
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: inherit;
  outline: none;
}
.toolbar input[type="search"]:focus,
.toolbar select:focus {
  border-color: var(--brand);
}

.btns {
  display: flex;
  gap: var(--space-2);
}
.btn {
  height: 40px;
  padding: 0 var(--space-3);
  border-radius: 999px;
  background: var(--brand);
  color: white;
  border: 1px solid color-mix(in oklab, var(--brand) 80%, black 10%);
  box-shadow: var(--shadow);
  cursor: pointer;
  font-weight: 600;
}
.btn:hover {
  background: var(--brand-2);
}
.btn:active {
  transform: translateY(1px);
}
.btn.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
}
.btn.btn-ghost:hover {
  border-color: var(--brand);
  color: var(--brand);
}

/* ===== Layout ===== */
.layout {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 260px 1fr;
  padding-block: var(--space-6);
}
.sidebar {
  position: sticky;
  top: 86px;
  align-self: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-3);
}
.sidebar-title {
  margin: 0.25rem 0 var(--space-2);
  font-size: var(--fs-0);
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.chapters {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.chapters a {
  padding: 0.4rem 0.6rem;
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
}
.chapters a:hover {
  background: color-mix(in oklab, var(--brand) 10%, transparent);
}

.content {
  display: grid;
  gap: var(--space-3);
}
.hint {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-3);
  font-size: var(--fs-0);
  color: var(--muted);
}

/* ===== Cards/Results ===== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  box-shadow: var(--shadow);
}
.card h3 {
  margin: 0 0 0.5rem 0;
  font-size: var(--fs-3);
}
.card .meta {
  color: var(--muted);
  font-size: var(--fs-0);
  margin-bottom: 0.75rem;
}

/* ===== Responsive ===== */
@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
    order: 2;
  }
}

.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}
.card.link {
  display: block;
  text-decoration: none;
  color: inherit;
}
.card.link:hover {
  transform: translateY(-1px);
  transition: transform 0.12s;
}

.crumbs {
  margin-bottom: 0.5rem;
}
.crumbs a {
  text-decoration: none;
  color: var(--brand);
}

.list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-top: 0.5rem;
}
.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  background: var(--surface);
}
.row:hover {
  border-color: var(--brand);
}
.row .muted {
  color: var(--muted);
  font-size: var(--fs-0);
}
/* ===== Onboarding & callouts ===== */
.callout {
  border: 1px solid var(--border);
  border-left-width: 6px;
  border-left-color: var(--brand);
  background: var(--surface);
  border-radius: var(--radius);
  padding: var(--space-3);
  box-shadow: var(--shadow);
  margin-bottom: var(--space-3);
}
.callout h4 {
  margin: 0.25rem 0 0.5rem 0;
  font-size: var(--fs-2);
}
.callout p {
  margin: 0.25rem 0;
}
.callout ol {
  margin: 0.5rem 0 0 1.25rem;
}
.help {
  color: var(--muted);
  font-size: var(--fs-0);
  margin-top: 0.25rem;
}

details.helpbox {
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: var(--space-3);
  background: color-mix(in oklab, var(--surface) 85%, transparent);
  margin-top: var(--space-3);
}
details.helpbox > summary {
  cursor: pointer;
  font-weight: 600;
}
label .hint {
  display: block;
  color: var(--muted);
  font-size: var(--fs-0);
  margin-top: 0.15rem;
}
/* ===== Fancy landing: 3D roulette ===== */
.fancy-wrap {
  position: relative;
  display: grid;
  place-items: center;
  min-height: clamp(420px, 60vh, 720px);
  perspective: 1200px;
  padding: 2rem 0;
}
.fancy-ring {
  position: relative;
  width: min(90vw, 880px);
  height: min(90vw, 880px);
  transform-style: preserve-3d;
  will-change: transform;
  transition: filter 0.2s;
}
.fancy-bubble {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  width: 160px;
  height: 160px;
  margin: auto;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transform-style: preserve-3d;
  cursor: pointer;
  user-select: none;
}
.fancy-bubble .title {
  text-align: center;
  font-weight: 700;
  padding: 0.5rem 0.75rem;
}
.fancy-bubble .meta {
  font-size: var(--fs-0);
  color: var(--muted);
}
.fancy-bubble:focus-visible {
  outline: 2px solid var(--brand);
}

/* diepte: bubbels verder weg iets kleiner/doorzichtiger */
.fancy-bubble[data-depth="back"] {
  filter: brightness(0.9);
  opacity: 0.7;
}

/* instructietekst */
.fancy-hint {
  position: absolute;
  bottom: 0.5rem;
  left: 0;
  right: 0;
  text-align: center;
  color: var(--muted);
  font-size: var(--fs-0);
}

/* Fallback voor mensen die animatie willen vermijden */
@media (prefers-reduced-motion: reduce) {
  .fancy-wrap {
    display: none;
  }
}
/* ===== Purple glass bubbles ===== */
:root {
  --glass-purple-1: rgba(124, 64, 255, 0.35);
  --glass-purple-2: rgba(62, 0, 155, 0.35);
  --glass-border: rgba(170, 130, 255, 0.55);
  --neon-blue: #8fd3ff; /* heldere blauw voor tekst */
}

.fancy-bubble {
  width: 168px;
  height: 168px;
  background: radial-gradient(
      120% 140% at 70% 8%,
      rgba(255, 255, 255, 0.35),
      rgba(255, 255, 255, 0) 60%
    ),
    radial-gradient(
      100% 100% at 30% 120%,
      var(--glass-purple-1),
      var(--glass-purple-2)
    ),
    linear-gradient(
      to bottom right,
      rgba(110, 32, 220, 0.35),
      rgba(60, 0, 140, 0.35)
    );
  border: 1px solid var(--glass-border);
  box-shadow: 0 12px 32px rgba(110, 32, 220, 0.35),
    inset 0 1px 14px rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px) saturate(120%);
}

.fancy-bubble .title {
  color: var(--neon-blue);
}
.fancy-bubble .meta {
  color: var(--neon-blue);
  opacity: 0.85;
}

/* verder weg iets doffer */
.fancy-bubble[data-depth="back"] {
  filter: saturate(0.9) brightness(0.95);
  opacity: 0.75;
}

/* icon <-> label crossfade */
.fancy-bubble .icon {
  font-size: 44px;
  line-height: 1;
  color: var(--neon-blue);
  opacity: 0.95;
  transform: translateY(2px);
  transition: opacity 0.25s, transform 0.25s;
}
.fancy-bubble .label {
  opacity: 0;
  transition: opacity 0.25s;
}
.fancy-bubble:hover .icon,
.fancy-bubble:focus-visible .icon {
  opacity: 0;
  transform: translateY(-6px) scale(0.9);
}
.fancy-bubble:hover .label,
.fancy-bubble:focus-visible .label {
  opacity: 1;
}

.fancy-ring.ring-back {
  opacity: 0.85;
  filter: saturate(0.95) blur(0.1px);
}
.fancy-ring.ring-front {
  opacity: 1;
}