/* BètaVonk. Layout: one paper-coloured background with white cards on it; page heads are teal-tinted graph-paper cards. BètaVonk teal (#0F918B, from the logo) is the one accent, navy ink for text. */
:root {
  --paper: #f6f8fc;
  --surface: #ffffff;
  --ink: #14213d;
  --muted: #4b5a7a;
  --line: #d6deea;
  --grid: rgba(20, 33, 61, 0.07);
  --band: #e8f4f4;
  --lift: #0c7d78;
  --lift-ink: #ffffff;
  --lift-line: #0f918b;
  --mark: #d3eeec;
  --foot-bg: #14213d; --foot-ink: #f6f8fc; --foot-muted: #b8c3d9;
  --ok: #0d7a6f;
  --warn: #b0431a;

  --f-display: "Bricolage Grotesque", "Arial Black", system-ui, sans-serif;
  --f-body: "Atkinson Hyperlegible", "Segoe UI", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;

  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: 1.6rem;
  --step-3: clamp(1.9rem, 4vw, 2.6rem);
  --step-4: clamp(2.4rem, 6vw, 3.8rem);
  --radius: 10px;
  --card-radius: 18px;
  --card-shadow: 0 1px 2px rgba(20, 33, 61, 0.04), 0 14px 34px -22px rgba(20, 33, 61, 0.28);
  --maxw: 72rem;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0d1424; --surface: #141e34; --ink: #e8edf7; --muted: #a4b1ca;
    --line: #26324d; --grid: rgba(232, 237, 247, 0.055); --band: #111a2e;
    --lift: #2fb8b0; --lift-ink: #0d1424; --lift-line: #2fb8b0; --mark: rgba(47, 184, 176, 0.28);
    --ok: #4fc1b4; --warn: #ff8a5c; color-scheme: dark;
    --foot-bg: #080d18; --foot-ink: #e8edf7; --foot-muted: #a4b1ca;
  }
}
:root[data-theme="dark"] {
  --paper: #0d1424; --surface: #141e34; --ink: #e8edf7; --muted: #a4b1ca;
  --line: #26324d; --grid: rgba(232, 237, 247, 0.055); --band: #111a2e;
  --lift: #2fb8b0; --lift-ink: #0d1424; --lift-line: #2fb8b0; --mark: rgba(47, 184, 176, 0.28);
  --ok: #4fc1b4; --warn: #ff8a5c; color-scheme: dark;
    --foot-bg: #080d18; --foot-ink: #e8edf7; --foot-muted: #a4b1ca;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 var(--step-0)/1.6 var(--f-body);
}
body::before {
  content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px);
  z-index: 10; background: var(--surface);
}
img { max-width: 100%; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--lift-line); outline-offset: 2px; border-radius: 4px; }
[hidden] { display: none !important; }

h1, h2, h3 { font-family: var(--f-display); line-height: 1.12; text-wrap: balance; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: var(--step-4); font-weight: 800; }
h2 { font-size: var(--step-3); font-weight: 800; }
h3 { font-size: var(--step-1); font-weight: 600; }
p { margin: 0; }
mark { background: linear-gradient(transparent 12%, var(--mark) 12%, var(--mark) 88%, transparent 88%); color: inherit; padding: 0 0.1em; }

.wrap {
  max-width: var(--maxw); margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.section { display: grid; gap: 1.25rem; }
/* Eén achtergrondkleur (--paper). Elk blok is een kaart met ruimte eromheen, zodat de achtergrond overal zichtbaar blijft. */
.wrap.section, .page-head > .wrap, .hero-inner {
  width: min(var(--maxw), calc(100% - 2 * max(16px, env(safe-area-inset-left, 0px))));
  margin: clamp(1rem, 2.5vw, 1.5rem) auto 0;
  padding: clamp(1.5rem, 4vw, 2.75rem) clamp(1.1rem, 4vw, 2.75rem);
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
}
.page-head > .wrap, .hero-inner {
  background-color: var(--band);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px; background-position: -1px -1px;
  border-color: color-mix(in srgb, var(--lift-line) 22%, var(--line));
}
main > section { padding-bottom: clamp(1.5rem, 4vw, 3rem); }
.wrap.section.prose, .wrap.section.narrow { max-width: none; }
.wrap.section.prose > *, .wrap.section.narrow > * { width: 100%; max-width: 46rem; justify-self: center; }
.facts-wrap { width: min(var(--maxw), calc(100% - 2 * max(16px, env(safe-area-inset-left, 0px)))); padding: 0; margin: clamp(1rem, 2.5vw, 1.5rem) auto 0; }
.facts-wrap .facts { border-radius: var(--card-radius); box-shadow: var(--card-shadow); }
.eyebrow { font: 500 0.78rem/1.3 var(--f-mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.lede { font-size: var(--step-1); color: var(--muted); max-width: 40rem; }
.hint, .fine { font-size: 0.92rem; color: var(--muted); }
.placeholder { border: 1px dashed var(--line); padding: 0.75rem 1rem; border-radius: var(--radius); color: var(--muted); font-style: italic; }

/* Draft bar + header */
.draft-bar { background: var(--ink); color: var(--paper); font-size: 0.85rem; }
.draft-bar .wrap { padding-block: 0.4rem; }
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5;
  background: var(--surface); border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 0.7rem; }
.logo { display: inline-flex; align-items: center; gap: 0.55rem; text-decoration: none; font: 800 1.35rem/1 var(--f-display); }
.logo-mark { width: 32px; height: 32px; flex: none; }
.logo { cursor: default; }
/* Menu: elk item een eigen pil, zodat de titels duidelijk los van elkaar staan */
.site-header .wrap { max-width: 80rem; }
.site-nav { display: flex; align-items: center; gap: 0.25rem; flex-wrap: wrap; }
.site-nav a:not(.btn) {
  text-decoration: none; font-weight: 700; font-size: 0.9rem; line-height: 1.2; white-space: nowrap;
  padding: 0.42rem 0.62rem; border-radius: 999px; border: 1px solid var(--line); background: var(--paper);
  transition: background-color 0.15s, border-color 0.15s;
}
.site-nav a:not(.btn):hover { border-color: var(--lift-line); background: var(--band); }
.site-nav a[aria-current="page"] { background: var(--lift); border-color: var(--lift); color: var(--lift-ink); }
.site-nav a.nav-feedback:not([aria-current="page"]) { border-style: dashed; border-color: var(--lift-line); color: var(--lift); }
.site-nav .nav-cta { border: 0; padding: 0.55rem 1rem; margin-left: 0.3rem; white-space: nowrap; font-size: 0.92rem; }
.menu-toggle { display: none; }
@media (max-width: 1220px) {
  .menu-toggle {
    display: inline-block; font: 700 0.95rem var(--f-body); color: var(--ink);
    background: none; border: 1.5px solid var(--line); border-radius: 999px; padding: 0.4rem 0.9rem; cursor: pointer;
  }
  .site-nav { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--surface);
    border-bottom: 1px solid var(--line); flex-direction: column; align-items: stretch; gap: 0.4rem;
    padding: 0.5rem max(16px, env(safe-area-inset-right, 0px)) 1rem max(16px, env(safe-area-inset-left, 0px)); }
  .site-nav.open { display: flex; }
  .site-nav a:not(.btn) { padding: 0.7rem 1rem; border-radius: 12px; }
  .site-nav .nav-cta { margin: 0.4rem 0 0; text-align: center; }
}

/* Buttons and chips */
.btn {
  display: inline-block; font: 700 1rem/1 var(--f-body); text-decoration: none; cursor: pointer;
  padding: 0.85rem 1.3rem; border-radius: 999px; border: 2px solid transparent; transition: transform 0.12s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-lift { background: var(--lift); color: var(--lift-ink); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-small { padding: 0.4rem 0.8rem; font-size: 0.85rem; background: var(--band); color: var(--ink); border-color: var(--line); }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; transform: none; }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip {
  font: 700 0.9rem var(--f-body); color: var(--ink); background: var(--surface); cursor: pointer;
  border: 1.5px solid var(--line); border-radius: 999px; padding: 0.4rem 0.9rem;
}
.chip.is-on { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* Hero */
.hero-inner {
  display: grid; grid-template-columns: 1.25fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center;
  padding-block: clamp(2.5rem, 7vw, 4.5rem);
}
.hero-copy { display: grid; gap: 1.25rem; min-width: 0; }
.notebook {
  list-style: none; margin: 0; padding: 1.5rem 1.5rem 1.5rem 3.25rem; position: relative;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: 0 18px 40px -24px rgba(20, 33, 61, 0.35);
  counter-reset: nb; display: grid; gap: 0;
}
.notebook::before { content: ""; position: absolute; top: 0; bottom: 0; left: 2.25rem; width: 2px; background: color-mix(in srgb, var(--warn) 45%, transparent); }
.notebook li {
  counter-increment: nb; position: relative; padding-block: 0.95rem; border-bottom: 1px solid var(--line);
  font: 600 clamp(1.1rem, 2.4vw, 1.35rem)/1.3 var(--f-display);
}
.notebook li:last-child { border-bottom: 0; }
.notebook li::before {
  content: counter(nb); position: absolute; left: -2.6rem; top: 1.05rem;
  font: 500 0.8rem var(--f-mono); color: var(--muted); width: 1.5rem; text-align: right;
}
.notebook li:not(:last-child)::after { content: "↓"; position: absolute; right: 0; top: 1rem; color: var(--muted); font-family: var(--f-mono); }
@media (max-width: 820px) { .hero-inner { grid-template-columns: 1fr; } }

/* Facts */
.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; position: relative; }
.fact { background: var(--surface); padding: 1.1rem 1.25rem; display: grid; gap: 0.2rem; }
.fact-n { font: 800 2rem/1 var(--f-display); font-variant-numeric: tabular-nums; }
.fact span:last-child { color: var(--muted); font-size: 0.95rem; }
@media (max-width: 720px) { .facts { grid-template-columns: repeat(2, 1fr); } }

/* Grids */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.5rem, 4vw, 3.5rem); align-items: start; }
.two-col > * { min-width: 0; display: grid; gap: 1rem; align-content: start; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
@media (max-width: 820px) { .two-col, .grid-3, .grid-2 { grid-template-columns: 1fr; } }

.tile {
  display: grid; gap: 0.5rem; align-content: start; text-decoration: none;
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem;
}
.tile p { color: var(--muted); }
a.tile:hover { border-color: var(--lift-line); }
.tile-link { font-weight: 700; margin-top: 0.25rem; }
.tile-link::after { content: " →"; }

/* Stat card */
.stat-card { margin: 0; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem; }
.stat-card figcaption { font-weight: 700; }
.bars { display: grid; gap: 0.7rem; }
.bar-row { display: grid; grid-template-columns: 8.5rem 1fr 3.5rem; align-items: center; gap: 0.75rem; font-size: 0.95rem; }
.bar-row b { font: 500 0.95rem var(--f-mono); text-align: right; font-variant-numeric: tabular-nums; }
.bar { height: 14px; background: var(--band); border-radius: 3px; overflow: hidden; }
.bar i { display: block; height: 100%; width: calc(var(--v) / 35 * 100%); background: var(--muted); border-radius: 3px; }
.bar-row.nl .bar i { background: var(--lift); }
.bar-row.nl span { font-weight: 700; }
.source { font-size: 0.82rem; color: var(--muted); }
@media (max-width: 460px) { .bar-row { grid-template-columns: 6.5rem 1fr 3.2rem; font-size: 0.85rem; } }

/* Page heads */
.page-head .wrap { display: grid; gap: 1rem; }
.page-head h1 { font-size: var(--step-3); max-width: 46rem; }

/* Lists */
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.9rem; max-width: 46rem; }
.checks li { padding-left: 2rem; position: relative; }
.checks li::before { content: "✓"; position: absolute; left: 0; top: 0; font-weight: 700; color: var(--ok); }
.plain { margin: 0; padding-left: 1.2rem; display: grid; gap: 0.4rem; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; counter-reset: st; }
.steps li { counter-increment: st; display: grid; gap: 0.4rem; align-content: start; padding-top: 0.9rem; border-top: 3px solid var(--ink); }
.steps li::before { content: "Stap " counter(st); font: 500 0.75rem var(--f-mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.steps li p { color: var(--muted); font-size: 0.95rem; }
.steps.compact { grid-template-columns: 1fr; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .steps { grid-template-columns: 1fr; } }
/* Flow: genummerde stappen verbonden door een lijn; op smalle schermen onder elkaar */
.flow { list-style: none; padding: 0; margin: 0.5rem 0 0; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 0.5rem; counter-reset: fl; }
.flow li {
  counter-increment: fl; position: relative; display: grid; justify-items: center; align-content: start; gap: 0.2rem;
  text-align: center; font: 600 1rem/1.2 var(--f-display); cursor: default;
}
.flow li::before {
  content: counter(fl); position: relative; z-index: 1; display: grid; place-items: center;
  width: 2.6rem; height: 2.6rem; margin-bottom: 0.4rem; border-radius: 50%;
  background: var(--surface); border: 2px solid var(--lift-line); color: var(--lift); font: 700 1rem var(--f-mono);
  box-shadow: 0 0 0 5px var(--mark);
}
.flow li:last-child::before { background: var(--lift); border-color: var(--lift); color: var(--lift-ink); }
.flow li:not(:last-child)::after {
  content: ""; position: absolute; top: 1.3rem; height: 2px;
  left: calc(50% + 1.6rem); right: calc(1.6rem - 50% - 0.5rem);
  background: linear-gradient(90deg, var(--lift-line), color-mix(in srgb, var(--lift-line) 35%, transparent));
}
.flow small { display: block; font: 400 0.84rem/1.35 var(--f-body); color: var(--muted); max-width: 11rem; }
@media (max-width: 640px) {
  .flow { grid-auto-flow: row; gap: 1rem; }
  .flow li { grid-template-columns: 2.6rem 1fr; column-gap: 0.9rem; justify-items: start; align-items: center; text-align: left; }
  .flow li::before { grid-row: span 2; margin: 0; }
  .flow small { grid-column: 2; max-width: none; }
  .flow li:not(:last-child)::after { top: 2.9rem; bottom: -0.9rem; left: calc(1.3rem - 1px); right: auto; width: 2px; height: auto;
    background: linear-gradient(var(--lift-line), color-mix(in srgb, var(--lift-line) 35%, transparent)); }
}

/* Sessions */
.toolbar { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 0.75rem; }
.session-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr)); gap: 1rem; }
.session {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.15rem;
  display: grid; gap: 0.65rem; align-content: start;
}
.session-top { display: flex; justify-content: space-between; align-items: center; gap: 0.5rem; }
.tag { font: 500 0.72rem var(--f-mono); text-transform: uppercase; letter-spacing: 0.06em; padding: 0.25rem 0.55rem; border-radius: 4px; background: var(--band); color: var(--muted); }
.tag.subj { background: var(--ink); color: var(--paper); }
.session h3 { font-size: 1.15rem; }
.meta { display: grid; gap: 0.15rem; font-size: 0.93rem; color: var(--muted); }
.meta b { color: var(--ink); font-weight: 700; }
.seats { display: grid; grid-template-columns: repeat(10, 1fr); gap: 3px; }
.seats i { height: 8px; border-radius: 2px; background: var(--band); border: 1px solid var(--line); }
.seats i.taken { background: var(--muted); border-color: var(--muted); }
.seats i.mine { background: var(--lift-line); border-color: var(--lift-line); }
.seat-label { font: 500 0.82rem var(--f-mono); font-variant-numeric: tabular-nums; color: var(--muted); }
.seat-label.full { color: var(--warn); }
.session .btn { justify-self: start; padding: 0.6rem 1rem; font-size: 0.92rem; }
.status-note { font-size: 0.88rem; font-weight: 700; color: var(--ok); }
.callout { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1rem; background: var(--band); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.25rem; }

/* Forms */
.form-wrap { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); align-items: start; }
@media (max-width: 860px) { .form-wrap { grid-template-columns: 1fr; } }
.form, .form-done { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.1rem, 3vw, 1.75rem); display: grid; gap: 1.1rem; }
.form h2, .form-done h2 { font-size: var(--step-2); }
fieldset { border: 0; padding: 0; margin: 0 0 0.5rem; display: grid; gap: 1rem; }
legend { font: 600 var(--step-1) var(--f-display); margin-bottom: 0.75rem; padding: 0; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 520px) { .row { grid-template-columns: 1fr; } }
label { display: grid; gap: 0.35rem; font-weight: 700; font-size: 0.95rem; min-width: 0; }
input:not([type="checkbox"]):not([type="radio"]), select, textarea {
  font: 400 1rem var(--f-body); color: var(--ink); background: var(--surface);
  border: 1.5px solid var(--line); border-radius: 8px; padding: 0.65rem 0.75rem; width: 100%;
}
input:focus, select:focus, textarea:focus { border-color: var(--ink); outline: none; box-shadow: 0 0 0 3px var(--mark); }
input[type="file"] { padding: 0.5rem; }
.checkset { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; }
.set-label { flex-basis: 100%; font-weight: 700; font-size: 0.95rem; }
label.check { display: flex; gap: 0.55rem; align-items: flex-start; font-weight: 400; }
label.check input { width: 1.1rem; height: 1.1rem; margin-top: 0.2rem; accent-color: var(--ink); flex: none; }
.form-error { color: var(--warn); font-weight: 700; }
.invalid { border-color: var(--warn) !important; }
.form .btn { justify-self: start; }
.side-note { display: grid; gap: 0.6rem; padding: 1.25rem; border-left: 3px solid var(--lift-line); }
.side-note p, .side-note li { color: var(--muted); font-size: 0.95rem; }

/* Resources */
.module-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 15rem), 1fr)); gap: 1rem; }
.module { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem; display: grid; gap: 0.6rem; align-content: start; }
.module h3 { font-size: 1.1rem; }
.module ul { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 0.35rem; }
.module li { font: 500 0.72rem var(--f-mono); color: var(--muted); border: 1px solid var(--line); border-radius: 4px; padding: 0.15rem 0.4rem; }
.module .state { font-size: 0.85rem; font-weight: 700; }
.module .state.live { color: var(--ok); }
.module .state.soon { color: var(--muted); }

.quiz { display: grid; gap: 1rem; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem; }
.q { display: grid; gap: 0.5rem; }
.q p { font: 500 1.05rem var(--f-mono); }
.q .opts { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.q button { font: 500 1rem var(--f-mono); min-width: 3.5rem; padding: 0.45rem 0.8rem; border-radius: 6px; border: 1.5px solid var(--line); background: var(--paper); color: var(--ink); cursor: pointer; }
.q button.right { background: var(--ok); border-color: var(--ok); color: var(--surface); }
.q button.wrong { border-color: var(--warn); color: var(--warn); }
.q .fb { font-size: 0.9rem; color: var(--muted); min-height: 1.4em; }
.score { font-weight: 700; }

/* Explore */
.links-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
@media (max-width: 860px) { .links-grid { grid-template-columns: 1fr; } }
.link-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.35rem; display: grid; gap: 0.4rem; }
.link-card .from { font: 500 0.85rem var(--f-mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.link-card .from::after { content: " →"; }
.link-card .to { font: 800 var(--step-2)/1.15 var(--f-display); }
.link-card { text-decoration: none; color: inherit; transition: border-color 0.15s, transform 0.15s; }
a.link-card:hover { border-color: var(--lift-line); transform: translateY(-2px); }
.link-card .desc { color: var(--muted); }
.link-card .tile-link { margin-top: auto; padding-top: 0.5rem; color: var(--lift); }

/* FAQ */
.faq { display: grid; border-top: 1px solid var(--line); max-width: 52rem; }
.faq details { border-bottom: 1px solid var(--line); padding-block: 0.9rem; }
.faq summary { font-weight: 700; cursor: pointer; }
.faq details p { margin-top: 0.6rem; color: var(--muted); }

/* Prose pages */
.prose { max-width: 46rem; }
.prose h2 { font-size: var(--step-2); margin-top: 1rem; }
.prose p { color: var(--ink); }

/* Contact */
.copy-row { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem; }
code { font: 500 0.95rem var(--f-mono); background: var(--band); padding: 0.15rem 0.4rem; border-radius: 4px; overflow-wrap: anywhere; }
.socials { display: grid; gap: 0.5rem; }

/* Footer */
.site-footer { background: var(--foot-bg); color: var(--foot-ink); margin-top: 0; }
.site-footer .logo, .site-footer a { color: var(--foot-ink); }
.site-footer .fine { color: var(--foot-muted); }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1.5rem; padding-block: 2.25rem; }
.footer-inner > div { display: grid; gap: 0.75rem; }
.footer-nav { display: grid; grid-template-columns: repeat(2, auto); gap: 0.4rem 2rem; align-content: start; }
.footer-nav a { text-decoration: none; font-weight: 700; font-size: 0.95rem; }
.footer-nav a:hover { text-decoration: underline; }

/* Lessen kiezen in het aanmeldformulier */
.pick-list { display: grid; gap: 0.5rem; }
label.check.pick { border: 1px solid var(--line); border-radius: 8px; padding: 0.7rem 0.8rem; background: var(--surface); }
label.check.pick:has(input:checked) { border-color: var(--ink); box-shadow: inset 3px 0 0 var(--lift-line); }
label.check.pick:has(input:disabled) { opacity: 0.55; }
label.check.pick > span { display: grid; gap: 0.15rem; min-width: 0; }
.pick-meta { font-size: 0.9rem; color: var(--muted); font-weight: 400; }
.pick-free { font: 500 0.8rem var(--f-mono); color: var(--ok); }
.pick-free.full { color: var(--warn); }
.pick-head { font-size: 1.05rem; margin-top: 0.5rem; }
.consents { display: grid; gap: 0.75rem; }
.req, .opt { display: inline-block; margin-left: 0.3rem; font: 500 0.7rem var(--f-mono); text-transform: uppercase; letter-spacing: 0.05em; padding: 0.05rem 0.35rem; border-radius: 3px; }
.req { background: var(--band); color: var(--ink); }
.opt { border: 1px solid var(--line); color: var(--muted); }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.session .fine { font-size: 0.88rem; }
.form-done:focus { outline: none; }

/* verplichte velden, schoolmail-code, oefenmateriaal, artikelen */
.link-btn { background: none; border: 0; padding: 0; font: inherit; font-weight: 700; color: var(--ink); text-decoration: underline; cursor: pointer; }
.star { color: var(--warn); font-weight: 700; margin-left: 0.15rem; }
.verify { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: flex-end; }
.verify label { flex: 1 1 16rem; }
.verify .btn { flex: none; min-height: 2.75rem; }
.module ul.mat-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.45rem; }
.module .mat-list li { font: inherit; font-size: 0.95rem; color: var(--ink); border: 0; padding: 0; overflow-wrap: anywhere; }
.mat-list .hint { font-size: 0.85rem; }
.mat-type { display: inline-block; font: 500 0.7rem var(--f-mono); text-transform: uppercase; letter-spacing: 0.05em; padding: 0.05rem 0.35rem; border-radius: 3px; background: var(--mark); color: var(--ink); margin-right: 0.25rem; }
.article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 16rem), 1fr)); gap: 1rem; margin-top: 1rem; }
.article-body { max-width: 42rem; }
.article-body h2 { margin-top: 1.5rem; }

/* overzichtelijkere pagina's */
.section-head { display: grid; gap: 0.25rem; }
.narrow { max-width: 46rem; }
.tile.static .eyebrow { margin: 0; }
.tile .flow { margin-top: 0.25rem; }
.steps.four { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .steps.four { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .steps.four { grid-template-columns: 1fr; } }

/* Ontdek bèta-pagina's */
.back-link { font-weight: 700; text-decoration: none; color: var(--lift); justify-self: start; }
.back-link:hover { text-decoration: underline; }
.prose { gap: 1rem; }
.prose h2 { margin-top: 1.5rem; }
.example { background: var(--band); border-left: 4px solid var(--lift-line); border-radius: 0 var(--radius) var(--radius) 0; padding: 1rem 1.25rem; display: grid; gap: 0.5rem; }
.example .eyebrow { margin: 0; }
.example ol { margin: 0; padding-left: 1.25rem; display: grid; gap: 0.25rem; }
.formula { font: 700 1.15rem var(--f-mono); color: var(--ink); }
/* Formules zoals in een artikel: gecentreerd, met nummer rechts en een 'waarin'-uitleg */
math { font-family: "STIX Two Math", "Cambria Math", "Latin Modern Math", math; }
.eq { margin: 0.5rem 0; display: grid; grid-template-columns: 3rem 1fr 3rem; align-items: center; }
.eq math { grid-column: 2; font-size: 1.45rem; margin: 0; }
.eq figcaption { grid-column: 3; justify-self: end; font: 400 1rem var(--f-body); color: var(--muted); }
math.calc { font-size: 1.2rem; margin: 0.25rem 0; overflow-x: auto; overflow-y: hidden; padding-block: 0.25rem; }
.where { color: var(--muted); font-size: 0.97rem; }
.where i, .example i { font-family: "STIX Two Math", "Cambria Math", "Times New Roman", serif; font-size: 1.08em; }
.force-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
.force-grid > div { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 0.85rem 1rem; display: grid; gap: 0.2rem; }
.force-grid span { color: var(--muted); font-size: 0.95rem; }
@media (max-width: 520px) { .force-grid { grid-template-columns: 1fr; } }

/* Feedback */
.rating { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.rating > label { display: block; font-weight: 700; }
.rating input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.rating label span {
  display: grid; place-items: center; width: 2.9rem; height: 2.9rem; border-radius: 12px; cursor: pointer;
  border: 1.5px solid var(--line); background: var(--surface); font: 700 1.1rem var(--f-mono);
}
.rating label:hover span { border-color: var(--lift-line); }
.rating input:checked + span { background: var(--lift); border-color: var(--lift); color: var(--lift-ink); }
.rating input:focus-visible + span { outline: 3px solid var(--lift-line); outline-offset: 2px; }
.rating-ends { flex: 0 0 100%; display: grid; grid-template-columns: repeat(5, 2.9rem); column-gap: 0.5rem; font-size: 0.85rem; color: var(--muted); }
.rating-ends span:last-child { grid-column: 5; justify-self: end; }
.feedback-callout { border-color: color-mix(in srgb, var(--lift-line) 35%, var(--line)); }
.feedback-callout p { max-width: 40rem; }
aside.side-note { background: var(--paper); border-radius: 0 var(--radius) var(--radius) 0; }

/* Oefenbank */
.ob-setup { display: grid; gap: 1rem; }
.ob-topics { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 15rem), 1fr)); gap: 0.75rem; }
.ob-topic {
  display: grid; gap: 0.35rem; align-content: start; justify-items: start; text-align: left; cursor: pointer;
  font: inherit; color: var(--ink); background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.1rem;
  transition: border-color 0.15s, transform 0.15s;
}
.ob-topic:hover { border-color: var(--lift-line); transform: translateY(-2px); }
.ob-topic b { font: 600 1.08rem/1.2 var(--f-display); }
.ob-desc { color: var(--muted); font-size: 0.93rem; }
.ob-best { font: 500 0.8rem var(--f-mono); color: var(--ok); }
.ob-mix { border-style: dashed; border-color: var(--lift-line); }
.ob-play { display: grid; gap: 0.75rem; }
.ob-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 0.5rem 1rem; }
.ob-meta { font-size: 0.93rem; color: var(--muted); }
.ob-meta b { color: var(--ok); }
.ob-progress { height: 8px; border-radius: 999px; background: var(--band); overflow: hidden; }
.ob-progress i { display: block; height: 100%; background: var(--lift-line); border-radius: 999px; transition: width 0.3s ease; }
.ob-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.1rem, 3vw, 1.75rem); display: grid; gap: 0.9rem; }
.ob-card .eyebrow { margin: 0; }
.ob-q { font: 600 clamp(1.15rem, 2.6vw, 1.35rem)/1.45 var(--f-display); }
.ob-q i, .ob-opt i, .ob-uitleg i { font-family: "STIX Two Math", "Cambria Math", "Times New Roman", serif; font-weight: 400; font-size: 1.1em; }
.ob-card math { font-size: 1.15em; }
.ob-answer { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 0.6rem; }
.ob-answer input { flex: 0 1 12rem; width: auto !important; font: 600 1.15rem var(--f-mono) !important; }
.ob-unit { font: 600 1.05rem var(--f-body); color: var(--muted); }
.ob-opts { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.ob-opt { font: 600 1rem var(--f-body); color: var(--ink); background: var(--surface); border: 1.5px solid var(--line); border-radius: 10px; padding: 0.65rem 1rem; cursor: pointer; text-align: left; }
.ob-opt:hover:not(:disabled) { border-color: var(--lift-line); }
.ob-opt:disabled { cursor: default; }
.ob-opt.right { background: var(--ok); border-color: var(--ok); color: var(--surface); opacity: 1; }
.ob-opt.wrong { border-color: var(--warn); color: var(--warn); }
.ob-fb:empty { display: none; }
.ob-fb { display: grid; gap: 0.4rem; font-size: 0.97rem; }
.ob-fb.is-ok, .ob-fb.is-wrong { border-left: 4px solid var(--ok); background: var(--surface); padding: 0.8rem 1rem; border-radius: 0 var(--radius) var(--radius) 0; }
.ob-fb.is-wrong { border-left-color: var(--warn); }
.ob-verdict { font-weight: 700; }
.ob-fb.is-ok .ob-verdict { color: var(--ok); }
.ob-fb.is-wrong .ob-verdict { color: var(--warn); }
.ob-after { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.ob-giveup { justify-self: start; font-size: 0.92rem; color: var(--muted); }
.ob-score { font: 600 var(--step-2)/1.1 var(--f-display); }
.ob-score b { font-size: var(--step-4); color: var(--lift); font-weight: 800; }
#oefenbank { scroll-margin-top: 5rem; }
.ob-play { scroll-margin-top: 5rem; }