/* ============================================================================
   AVANTIS 2.0 — designsysteem
   ----------------------------------------------------------------------------
   Uit het homepage-prototype gelicht zodat élke pagina er op kan draaien:
   home, catalogus, productpagina's, contentpagina's.

   North Star: "Industrial Precision" — technisch wit, graphite, logo-cyaan als
   enige signaalkleur. De site moet lezen als een datablad: haarlijnen in plaats
   van schaduwen, monospace voor meetwaarden, geen afgeronde hoeken.

   Opbouw:
     1. tokens        - kleuren, type, ruimte, z-index, timing
     2. basis         - reset, typografie, links, focus
     3. layout        - wrap, section, sec-head
     4. componenten   - knoppen, nav, footer, datablad-tabellen, badges, velden
     5. beweging      - reveal + prefers-reduced-motion

   Viertalig (EN/NL/DE/PL): Duitse en Poolse strings zijn tot ~40% langer.
   Niets in dit bestand rekent op een vaste tekstlengte; labels mogen afbreken.
   ========================================================================== */

/* ---------------------------------------------------------------- 1. tokens */
:root {
  /* oppervlak */
  --bg: #F3F3EF;              /* technisch wit — het papier van het datablad */
  --white: #FFFFFF;           /* lichter vlak, voor kaarten en tabelzones */
  --graphite: #252828;        /* zware sectie: story, CTA */
  --navy: #1B2240;            /* logo-inkt, gereserveerd voor merkmomenten */

  /* inkt */
  --ink: #111313;
  --ink-soft: #3D4143;        /* lopende tekst — 9.8:1 op --bg */
  --ink-mute: #4C5254;        /* secundair — 7.6:1 op --bg */
  --metal: #C9CCCA;           /* tekst op donker */
  --metal-dark: #8D9290;      /* labels op donker; op licht alleen ≥18px */

  /* signaal */
  --accent: #2E9AAD;          /* logo-cyaan, donkerder gestemd voor AA op licht */
  --accent-deep: #25808F;     /* hover */
  --accent-bright: #3BAEC2;   /* op donkere vlakken */
  --danger: #BD0939;

  /* lijnen — diepte komt van haarlijnen, niet van schaduw */
  --line: rgba(17, 19, 19, .14);
  --line-strong: rgba(17, 19, 19, .28);
  --line-dark: rgba(255, 255, 255, .14);

  /* type */
  --font-display: 'Inter Tight', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, Consolas, monospace;

  /* ruimte — clamp zodat grote schermen ademen */
  --sec-y: clamp(4.5rem, 9vw, 8.5rem);
  --gap: clamp(1.5rem, 3vw, 2.5rem);
  --wrap: 1360px;
  --wrap-breed: 1680px;       /* navigatiebalk: mag breder dan lopende tekst */

  /* stapeling — semantisch, nooit losse 999's */
  --z-base: 1;
  --z-sticky: 100;
  --z-nav: 200;
  --z-backdrop: 300;
  --z-modal: 400;

  --ease-out: cubic-bezier(.16, 1, .3, 1);
}

/* ----------------------------------------------------------------- 2. basis */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -.02em;
  text-wrap: balance;
}

p { max-width: 68ch; text-wrap: pretty; }

/* Eén zichtbare focusring voor de hele site — toetsenbordgebruikers zijn hier
   de norm, niet de uitzondering (inkoopafdelingen werken met tab). */
:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.mono {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .04em;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ---------------------------------------------------------------- 3. layout */
.wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3.5rem);
}

section { padding-block: var(--sec-y); }

.sec-head { max-width: 820px; margin-bottom: clamp(2.5rem, 5vw, 4.5rem); }
.sec-head h2 { font-size: clamp(2rem, 4.2vw, 3.4rem); }
.sec-head .lead { margin-top: 1rem; font-size: 1.05rem; color: var(--ink-soft); }

.on-dark { color: var(--white); }
.on-dark h1, .on-dark h2, .on-dark h3 { color: var(--white); }
.on-dark .lead, .on-dark p { color: var(--metal); }
/* lichte tekst op donker leest lichter: iets meer lucht */
.on-dark { line-height: 1.68; }

/* ----------------------------------------------------------- 4. componenten */

/* knoppen ------------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: .95rem;
  padding: .85rem 1.6rem;
  text-decoration: none;
  border: 1px solid var(--ink);
  background: none;
  cursor: pointer;
  transition: background .25s var(--ease-out), color .25s var(--ease-out),
              border-color .25s var(--ease-out);
}
.btn-solid { background: var(--ink); color: var(--white); }
.btn-solid:hover { background: var(--graphite); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--white); }
.btn-accent { background: var(--accent); border-color: var(--accent); color: var(--white); }
.btn-accent:hover { background: var(--accent-deep); border-color: var(--accent-deep); }
.btn-sm { padding: .55rem 1.1rem; font-size: .86rem; }
.on-dark .btn-ghost { border-color: var(--white); color: var(--white); }
.on-dark .btn-ghost:hover { background: var(--white); color: var(--ink); }

/* navigatie ---------------------------------------------------------------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
/* De navigatiebalk loopt breder dan de inhoud: op 1547 px stond hij met 1360 px
   opvallend smal, met een gat links en rechts dat de balk los liet zweven van
   het scherm. Lopende tekst blijft wél op --wrap (1360) staan — een regel van
   1700 px leest slecht. Een menu is geen lopende tekst, dus die mag breder. */
.nav-inner {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.2vw, 2.2rem);
  padding-block: .9rem;
}
/* Twee klassen diep, met opzet: de homepage laadt ná avantis.css ook home.css
   (uit het prototype), en daarin staat een `.wrap{max-width:1360px}` die deze
   regel anders zou overrulen. Zo krijgt de balk op élke pagina dezelfde breedte. */
.site-nav .nav-inner { max-width: var(--wrap-breed); }
.nav-logo img { height: 34px; width: auto; }
.nav-links { display: flex; gap: clamp(.9rem, 1.7vw, 1.7rem); list-style: none; margin-left: auto; }
/* Zeven menu-items in vier talen: Duitse en Poolse labels zijn fors langer.
   Nooit binnen een label afbreken — "Über uns" over twee regels breekt de
   navigatiebalk. Loopt de rij vol, dan neemt het uitklapmenu het over. */
.nav-links a {
  text-decoration: none;
  white-space: nowrap;
  font-size: .92rem;
  font-weight: 500;
  color: var(--ink);
  opacity: .85;
  transition: opacity .2s;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { opacity: 1; }
.nav-links a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--accent); }

/* taalwisselaar: vier talen, dus compact en zonder vaste breedte */
.lang {
  display: flex;
  align-items: center;
  gap: .1rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
}
.lang a {
  text-decoration: none;
  padding: .3rem .42rem;
  color: var(--metal-dark);
  transition: color .2s;
}
.lang a:hover { color: var(--ink); }
.lang a[aria-current="true"] { color: var(--ink); box-shadow: inset 0 -2px 0 var(--accent); }

/* Mobiel menu met <details>: werkt zonder JavaScript, is toetsenbord- en
   schermlezer-toegankelijk, en gebruikt dezelfde linklijst als desktop —
   geen tweede kopie die uit de pas gaat lopen. */
.nav-menu { margin-left: auto; }
.nav-menu > summary { display: none; }

@media (max-width: 1100px) {
  .nav-menu > summary {
    display: flex;
    align-items: center;
    gap: .5rem;
    list-style: none;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: .74rem;
    letter-spacing: .12em;
    padding: .45rem .1rem;
    color: var(--ink);
  }
  .nav-menu > summary::-webkit-details-marker { display: none; }
  .nav-menu > summary .bars { display: block; width: 1.1rem; }
  .nav-menu > summary .bars i {
    display: block; height: 1.5px; background: currentColor; margin-block: 3px;
  }
  .nav-menu[open] > summary .bars i:nth-child(2) { opacity: .4; }

  .nav-menu .nav-links {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: absolute;
    left: 0; right: 0;
    top: 100%;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: .5rem clamp(1.25rem, 4vw, 3.5rem) 1rem;
  }
  .nav-menu .nav-links a {
    display: block;
    padding: .7rem 0;
    border-bottom: 1px solid var(--line);
    font-size: 1rem;
  }
  .nav-menu .nav-links li:last-child a { border-bottom: 0; }
}

/* kruimelpad --------------------------------------------------------------- */
.crumbs {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--metal-dark);
  padding-block: 1rem;
  border-bottom: 1px solid var(--line);
}
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: .5rem; }
.crumbs li + li::before { content: "/"; margin-right: .5rem; color: var(--line-strong); }
.crumbs a { text-decoration: none; }
.crumbs a:hover { color: var(--ink); }

/* datablad-tabel — het hart van deze site -------------------------------- */
.table-scroll { overflow-x: auto; }

table.spec {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: .8rem;
}
table.spec caption {
  text-align: left;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--metal-dark);
  padding-bottom: .7rem;
}
table.spec th {
  text-align: left;
  font-weight: 500;
  color: var(--metal-dark);
  letter-spacing: .08em;
  padding: .7rem .8rem;
  border-bottom: 1px solid var(--ink);
  white-space: nowrap;
}
table.spec td {
  padding: .85rem .8rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  font-variant-numeric: tabular-nums;
}
table.spec th[scope="row"] {
  font-weight: 400;
  color: var(--ink-mute);
  border-bottom: 1px solid var(--line);
  white-space: normal;   /* Duitse labels mogen afbreken */
  letter-spacing: 0;
}
table.spec tr.is-diff td, table.spec tr.is-diff th[scope="row"] {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

/* specificatiekolom: label links, waarde rechts uitgelijnd */
.spec-group h4 {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--metal-dark);
  border-bottom: 1px solid var(--ink);
  padding-bottom: .6rem;
}
.spec-group dl {
  display: grid;
  grid-template-columns: 1fr auto;
  font-family: var(--font-mono);
  font-size: .8rem;
}
.spec-group dt { color: var(--ink-mute); padding: .55rem 0; border-bottom: 1px solid var(--line); }
.spec-group dd {
  text-align: right;
  padding: .55rem 0;
  border-bottom: 1px solid var(--line);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

/* kerncijfer-strip --------------------------------------------------------- */
.key-specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.key-specs > div { background: var(--bg); padding: 1rem 1.1rem; }
.key-specs b {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  display: block;
  letter-spacing: -.01em;
  font-variant-numeric: tabular-nums;
}
.key-specs span {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--metal-dark);
  letter-spacing: .05em;
}

/* keurmerken en status ----------------------------------------------------- */
.marks { display: flex; flex-wrap: wrap; gap: .4rem; }
.mark {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .06em;
  padding: .2rem .5rem;
  border: 1px solid var(--line-strong);
  color: var(--ink-mute);
  white-space: nowrap;
}
.mark-accent { border-color: var(--accent); color: var(--accent); }

/* formuliervelden ---------------------------------------------------------- */
.field { display: block; margin-bottom: 1rem; }
.field > span {
  display: block;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--ink-mute);
  margin-bottom: .4rem;
}
.field input, .field select, .field textarea {
  width: 100%;
  font: inherit;
  padding: .7rem .8rem;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: var(--white);
  color: var(--ink);
}
.field input::placeholder, .field textarea::placeholder { color: var(--ink-mute); }
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible {
  border-color: var(--accent);
}

/* lopende tekst (artikelen, kennispagina's, juridisch) ---------------------- */
.prose-wrap { padding-block: clamp(2.5rem, 5vw, 4.5rem) clamp(3.5rem, 7vw, 6rem); }

.prose-head {
  max-width: 46rem;
  padding-bottom: clamp(1.5rem, 3vw, 2.5rem);
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
  border-bottom: 1px solid var(--line);
}
.prose-head h1 { font-size: clamp(2rem, 4.4vw, 3.4rem); }

/* 65-70 tekens per regel: de leesbare bandbreedte, ook in het Duits */
.prose { max-width: 42rem; color: var(--ink-soft); }
.prose > * + * { margin-top: 1.1rem; }
.prose p { max-width: none; }

.prose h2 {
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  color: var(--ink);
  margin-top: clamp(2.2rem, 4vw, 3rem);
}
.prose h3 {
  font-size: clamp(1.15rem, 1.9vw, 1.4rem);
  color: var(--ink);
  margin-top: clamp(1.8rem, 3vw, 2.4rem);
}
.prose h4 { font-size: 1.02rem; color: var(--ink); margin-top: 1.6rem; }

.prose a { color: var(--accent-deep); text-decoration: underline; text-underline-offset: .15em; }
.prose a:hover { color: var(--ink); }

.prose ul, .prose ol { padding-left: 1.15rem; }
.prose li + li { margin-top: .35rem; }
.prose ul { list-style: none; padding-left: 0; }
.prose ul > li { position: relative; padding-left: 1.4rem; }
.prose ul > li::before {
  content: "";
  position: absolute;
  left: 0; top: .62em;
  width: .8rem; height: 1.5px;
  background: var(--accent);
}

.prose blockquote {
  margin-inline: 0;
  padding: 1.1rem 0 1.1rem 1.4rem;
  border-left: 1px solid var(--accent);
  color: var(--ink);
  font-size: 1.06rem;
}

/* beelden mogen breder dan de leesregel: ze dragen informatie op deze site */
.prose img {
  width: 100%;
  height: auto;
  max-width: min(60rem, 100%);
  margin-block: clamp(1.5rem, 3vw, 2.2rem);
  background: var(--white);
  border: 1px solid var(--line);
}
.prose figure { margin: clamp(1.5rem, 3vw, 2.2rem) 0; }
.prose figure img { margin-block: 0; }
.prose figcaption {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--metal-dark);
  margin-top: .5rem;
}

/* tabellen in lopende tekst krijgen de datablad-behandeling */
.prose table {
  width: 100%;
  max-width: min(60rem, 100%);
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: .8rem;
  margin-block: clamp(1.5rem, 3vw, 2.2rem);
  display: block;
  overflow-x: auto;
}
.prose th {
  text-align: left; font-weight: 500; color: var(--metal-dark);
  letter-spacing: .06em; padding: .7rem .8rem;
  border-bottom: 1px solid var(--ink); white-space: nowrap;
}
.prose td {
  padding: .8rem .8rem; border-bottom: 1px solid var(--line);
  vertical-align: top; font-variant-numeric: tabular-nums;
}

.prose hr { border: 0; border-top: 1px solid var(--line); margin-block: clamp(2rem, 4vw, 3rem); }

/* voettekst ---------------------------------------------------------------- */
.site-foot {
  background: var(--navy);
  color: var(--metal);
  padding-block: clamp(3rem, 6vw, 4.5rem) 2rem;
}
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2.5rem; }
.foot-brand img { height: 30px; width: auto; filter: brightness(0) invert(1); }
.foot-brand p { font-size: .85rem; margin-top: 1.1rem; color: var(--metal-dark); max-width: 34ch; }
.site-foot h4 {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--metal-dark);
  margin-bottom: 1rem;
}
.site-foot ul { list-style: none; display: flex; flex-direction: column; gap: .5rem; }
.site-foot ul a { font-size: .88rem; text-decoration: none; color: var(--metal); opacity: .85; }
.site-foot ul a:hover { opacity: 1; color: var(--white); }
.foot-meta {
  margin-top: 3rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line-dark);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--metal-dark);
}
@media (max-width: 900px) { .foot-grid { grid-template-columns: 1fr 1fr; } }

/* ------------------------------------------------------------- 5. beweging */
/* Reveals verrijken een al zichtbare pagina: zonder JS staat alles gewoon aan,
   zodat een crawler of een gepauzeerd tabblad nooit een lege sectie krijgt. */
.js .rv {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .8s var(--ease-out), transform .8s var(--ease-out);
}
.js .rv.in { opacity: 1; transform: none; }
.js .rv-d1 { transition-delay: .08s; }
.js .rv-d2 { transition-delay: .16s; }
.js .rv-d3 { transition-delay: .24s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .rv { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

/* Taal zonder vertaling van deze pagina: zichtbaar maar niet klikbaar.
   Beter dan een vlag die stiekem naar de catalogus springt. */
.lang .lang-uit {
  padding: .3rem .42rem;
  color: var(--line-strong);
  cursor: not-allowed;
  text-decoration: line-through;
  text-decoration-thickness: 1px;
}

/* Juridische links in de voettekst: waren alleen via de sitemap te vinden. */
.foot-legal {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem 1.2rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
}
.foot-legal a { color: var(--metal-dark); text-decoration: none; }
.foot-legal a:hover { color: var(--white); }