/* ==========================================================================
   Artikelen (/planning/... en /ad-onderzoek/...)
   Aanvulling op ai.css: dezelfde hero, knoppen, sectietitels, kaarten en CTA.
   kb_-classes blijven beperkt tot de artikelinhoud en interactieve voorbeelden.
   ========================================================================== */
.kb_pagina {
    --kb-blauw: var(--ai-blauw);
    --kb-paars: var(--ai-paars);
    --kb-navy: var(--ai-inkt);
    --kb-grijs: var(--ai-grijs);
    --kb-teal: var(--ai-teal);
    --kb-teal-donker: #0b8f6c;
    --kb-oranje: #c25200;
    --kb-rood: #c0392b;
    --kb-licht: var(--ai-vlak);
    --kb-rand: var(--ai-rand);
    --kb-wit: #ffffff;
}

.kb_pagina main { overflow-x: clip; }
.kb_smal { max-width: 820px; }
.kb_pagina h1, .kb_pagina h2, .kb_pagina h3 { text-wrap: balance; }
.kb_pagina [id] { scroll-margin-top: 140px; }

/* ====== HERO ====== */
.kb_hero h1 { overflow-wrap: break-word; hyphens: auto; }
.kb_kruimels { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; font-size: 13px; line-height: 1.6; margin-bottom: 22px; color: rgba(255,255,255,.75); }
.kb_kruimels a { color: rgba(255,255,255,.85); text-decoration: none; }
.kb_kruimels a:hover { color: var(--kb-wit); text-decoration: underline; }
.kb_hero .ai_badge { text-transform: uppercase; }
.kb_hero .ai_hero_btns { margin-bottom: 20px; }
.kb_hero .ai_hero_btns i { margin-left: 6px; }
.kb_bijgewerkt { font-size: 13px; color: rgba(255,255,255,.75); margin: 0; }
.kb_pagina .ai_btn_wit:focus-visible, .kb_pagina .ai_btn_ghost:focus-visible, .kb_pagina .ai_cta .btn:focus-visible,
.kb_tegel:focus-visible, .kb_verwant a:focus-visible, .kb_faq summary:focus-visible { outline: 3px solid var(--kb-teal); outline-offset: 3px; }

/* ====== BLOKKEN ====== */
.kb_blok { padding: 90px 0; }
.kb_licht { background: var(--kb-licht); }
.kb_alinea { font-size: 16px; line-height: 1.7; color: var(--kb-grijs); max-width: 720px; margin-bottom: 16px; }
.kb_alinea + .kb_alinea { margin-top: -4px; }
.kb_voetnoot { font-size: 13px; color: var(--kb-grijs); margin-top: 14px; margin-bottom: 0; }
.kb_intro_grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 48px; align-items: center; }
.kb_illustratie { margin: 0; min-width: 0; }
.kb_illustratie img { display: block; width: 100%; height: auto; border-radius: 12px; }
.kb_illustratie figcaption { text-align: center; }

.kb_lijst { list-style: none; padding: 0; margin: 8px 0 0; max-width: 820px; display: grid; gap: 12px; }
.kb_lijst li { position: relative; padding-left: 30px; font-size: 16px; line-height: 1.6; color: var(--kb-navy); }
.kb_lijst li::before { content: ""; position: absolute; left: 6px; top: 10px; width: 8px; height: 8px; border-radius: 50%; background: var(--kb-blauw); }

.kb_stappen { list-style: none; counter-reset: kbstap; padding: 0; margin: 12px 0 0; display: grid; gap: 14px; max-width: 860px; }
.kb_stappen li { counter-increment: kbstap; display: grid; grid-template-columns: 40px 1fr; column-gap: 16px; row-gap: 2px; background: var(--kb-wit); border: 1px solid var(--kb-rand); border-radius: 12px; padding: 18px 20px; }
.kb_stappen li::before { content: counter(kbstap); grid-row: span 2; width: 34px; height: 34px; border-radius: 50%; background: linear-gradient(135deg, var(--kb-blauw), var(--kb-paars)); color: var(--kb-wit); font-weight: 800; font-size: 15px; display: flex; align-items: center; justify-content: center; }
.kb_stappen b { font-size: 16px; color: var(--kb-navy); }
.kb_stappen span { font-size: 14px; color: var(--kb-grijs); line-height: 1.6; }

.kb_tabel_wrap { overflow-x: auto; border: 1px solid var(--kb-rand); border-radius: 12px; background: var(--kb-wit); margin-top: 8px; }
.kb_tabel { width: 100%; border-collapse: collapse; font-size: 15px; }
.kb_tabel th, .kb_tabel td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--kb-rand); vertical-align: top; color: var(--kb-navy); }
.kb_tabel thead th { font-size: 12px; letter-spacing: 1px; text-transform: uppercase; color: var(--kb-grijs); background: var(--kb-licht); font-weight: 700; }
.kb_tabel tbody tr:last-child th, .kb_tabel tbody tr:last-child td { border-bottom: 0; }
.kb_tabel tbody th { font-weight: 700; }

/* ====== KAARTEN ====== */
.kb_twee { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 8px; }
.kb_kaart { background: var(--kb-wit); border: 1px solid var(--kb-rand); border-radius: 14px; padding: 24px; margin: 0; }
.kb_kaart_accent { border-color: var(--kb-blauw); box-shadow: 0 14px 40px rgba(65,84,241,.12); }
.kb_kaart_label { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--kb-blauw); margin-bottom: 12px; }
.kb_kaart h3 { font-size: 18px; color: var(--kb-navy); margin-bottom: 14px; }
.kb_kaart_noot { font-size: 13px; color: var(--kb-grijs); margin: 14px 0 0; display: flex; gap: 8px; align-items: baseline; }
.kb_kenmerken { margin: 0; display: grid; gap: 8px; }
.kb_kenmerken div { display: flex; justify-content: space-between; gap: 16px; background: var(--kb-licht); border-radius: 8px; padding: 9px 12px; font-size: 14px; }
.kb_kenmerken dt { font-weight: 400; color: var(--kb-grijs); }
.kb_kenmerken dd { margin: 0; font-weight: 700; color: var(--kb-navy); text-align: right; }
.kb_voorstel div { border-left: 3px solid var(--kb-teal); }
.kb_voorstellen { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.kb_voorstellen li { display: flex; gap: 14px; align-items: baseline; border: 1px solid var(--kb-rand); border-radius: 10px; padding: 10px 14px; font-size: 14px; color: var(--kb-grijs); }
.kb_voorstellen b { color: var(--kb-blauw); min-width: 72px; font-variant-numeric: tabular-nums; }

/* ====== WEEKPLANNING ====== */
.kb_week { overflow-x: auto; border: 1px solid var(--kb-rand); border-radius: 12px; background: var(--kb-wit); margin-top: 8px; }
.kb_week_raster { display: grid; grid-template-columns: 190px repeat(5, minmax(100px, 1fr)); min-width: 700px; font-size: 13px; }
.kb_week_raster > div { border-bottom: 1px solid var(--kb-rand); border-left: 1px solid var(--kb-rand); padding: 8px; min-height: 66px; }
.kb_week_raster > .kb_week_kop { min-height: 0; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--kb-grijs); background: var(--kb-licht); }
.kb_week_raster > .kb_week_wie { border-left: 0; }
.kb_week_wie b { display: block; color: var(--kb-navy); }
.kb_week_wie span { font-size: 12px; color: var(--kb-grijs); }
.kb_slot { display: block; border-radius: 5px; padding: 4px 7px; margin-bottom: 4px; font-size: 12px; line-height: 1.35; }
.kb_slot_locatie { background: #e7eaff; color: #2c3bb8; }
.kb_slot_online { background: #e2f8f0; color: var(--kb-teal-donker); }
.kb_slot_open { border: 1.5px dashed var(--kb-oranje); color: var(--kb-oranje); }
.kb_slot_mini { display: inline-block; width: 22px; height: 14px; padding: 0; margin: 0 8px 0 0; vertical-align: middle; }
.kb_legenda { list-style: none; padding: 0; margin: 14px 0 0; display: flex; flex-wrap: wrap; gap: 8px 22px; font-size: 13px; color: var(--kb-grijs); align-items: center; }

/* ====== BOEKINGSFLOW ====== */
.kb_flow { list-style: none; padding: 0; margin: 8px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.kb_flow_stap { background: var(--kb-wit); border: 1px solid var(--kb-rand); border-radius: 14px; padding: 20px; }
.kb_flow_nr { width: 30px; height: 30px; border-radius: 50%; background: linear-gradient(135deg, var(--kb-blauw), var(--kb-paars)); color: var(--kb-wit); font-weight: 800; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; margin-bottom: 10px; }
.kb_flow_stap h3 { font-size: 16px; color: var(--kb-navy); margin-bottom: 12px; }
.kb_flow_scherm { display: grid; gap: 6px; }
.kb_tijden { grid-template-columns: 1fr 1fr; }
.kb_keuze { border: 1px solid var(--kb-rand); border-radius: 8px; padding: 8px 10px; font-size: 13px; color: var(--kb-navy); text-align: center; }
.kb_keuze_actief { border-color: var(--kb-blauw); background: #eef0ff; color: var(--kb-blauw); font-weight: 700; }
.kb_veldje { border: 1px solid var(--kb-rand); border-radius: 8px; padding: 8px 10px; font-size: 13px; color: var(--kb-grijs); background: var(--kb-licht); }
.kb_flow_klaar { grid-template-columns: auto 1fr; align-items: start; font-size: 13px; color: var(--kb-navy); line-height: 1.5; }
.kb_flow_klaar i { color: var(--kb-teal-donker); font-size: 22px; }

/* ====== REKENHULP ====== */
.kb_reken { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; background: var(--kb-wit); border: 1px solid var(--kb-rand); border-radius: 14px; padding: 26px; margin-top: 8px; }
.kb_reken_invoer { display: grid; grid-template-columns: 1fr 140px; gap: 12px 16px; align-items: center; }
.kb_reken_invoer label { font-size: 15px; color: var(--kb-navy); margin: 0; }
.kb_reken_invoer input { font-size: 16px; padding: 10px 12px; border: 1px solid #c3c9f5; border-radius: 8px; color: var(--kb-navy); width: 100%; font-variant-numeric: tabular-nums; }
.kb_reken_invoer input:focus { outline: 3px solid rgba(65,84,241,.25); border-color: var(--kb-blauw); }
.kb_reken_uitkomst { display: grid; gap: 10px; align-content: start; }
.kb_reken_uitkomst div { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; background: var(--kb-licht); border-radius: 10px; padding: 14px 16px; }
.kb_reken_uitkomst span { font-size: 14px; color: var(--kb-grijs); }
.kb_reken_uitkomst b { font-size: 22px; color: var(--kb-navy); font-variant-numeric: tabular-nums; }
.kb_reken_uitkomst .kb_reken_totaal { background: linear-gradient(135deg, var(--kb-blauw), var(--kb-paars)); }
.kb_reken_totaal span, .kb_reken_totaal b { color: var(--kb-wit); }
.kb_reken_totaal b { font-size: 28px; }

/* ====== ROUTE ====== */
.kb_route figcaption { margin-bottom: 12px; }
.kb_route figcaption b { display: block; color: var(--kb-navy); font-size: 16px; }
.kb_route figcaption span { font-size: 13px; color: var(--kb-grijs); }
.kb_route svg { width: 100%; height: auto; display: block; }
.kb_route_vlak { fill: var(--kb-licht); }
.kb_route_stad { fill: #e7eaff; }
.kb_route_tekst { fill: var(--kb-grijs); font-size: 13px; font-weight: 700; }
.kb_route_lijn { fill: none; stroke: var(--kb-blauw); stroke-width: 2.5; stroke-linejoin: round; }
.kb_route_lijn_rommel { stroke: var(--kb-oranje); stroke-dasharray: 6 5; }
.kb_route_start { fill: var(--kb-navy); }
.kb_route_punt { fill: var(--kb-wit); stroke: var(--kb-navy); stroke-width: 2.5; }

/* ====== AD-ONDERDELEN ====== */
.kb_onderdelen { list-style: none; padding: 0; margin: 8px 0 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; position: relative; }
.kb_onderdelen li { background: var(--kb-wit); border: 1px solid var(--kb-rand); border-radius: 14px; padding: 20px 18px; }
.kb_onderdeel_bol { width: 46px; height: 46px; border-radius: 50%; background: #eef0ff; color: var(--kb-blauw); display: inline-flex; align-items: center; justify-content: center; font-size: 17px; margin-bottom: 12px; }
.kb_onderdelen h3 { font-size: 16px; color: var(--kb-navy); margin-bottom: 6px; }
.kb_onderdelen p { font-size: 13px; color: var(--kb-grijs); line-height: 1.55; margin: 0; }

/* ====== BEROEPSPROFIEL ====== */
.kb_past { display: inline-block; border-radius: 6px; padding: 3px 9px; font-size: 13px; font-weight: 500; }
.kb_past_wel { background: #e2f8f0; color: var(--kb-teal-donker); }
.kb_past_aanpassen { background: #fff1e6; color: var(--kb-oranje); }
.kb_past_niet { background: #fdecea; color: var(--kb-rood); }

/* ====== DOCUMENT NAAR VELDEN ====== */
.kb_doc_tekst p { font-size: 14px; line-height: 1.7; color: var(--kb-grijs); margin-bottom: 10px; }
.kb_doc_tekst mark { background: #fff3c4; color: var(--kb-navy); padding: 0 3px; border-radius: 3px; }

/* ====== ZO HELPT PLANNINGSAGENDA ====== */
.kb_pagina .kb_helpt { padding: 40px; }
.kb_pagina .kb_helpt:hover { transform: none; box-shadow: none; }
.kb_pagina .kb_helpt .kb_alinea { font-size: 16px; line-height: 1.7; }
.kb_vinkjes { list-style: none; padding: 0; margin: 18px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 28px; }
.kb_vinkjes li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--kb-navy); line-height: 1.5; }
.kb_vinkjes li::before { content: "\2713"; color: var(--kb-teal-donker); font-weight: 900; background: rgba(49,225,175,.16); width: 22px; height: 22px; min-width: 22px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 12px; }

/* ====== BEWIJS ====== */
.kb_bewijs { display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items: center; }
.kb_citaat { margin: 0; }
.kb_citaat blockquote { font-size: clamp(18px, 2.2vw, 22px); line-height: 1.5; color: var(--kb-navy); margin: 0 0 12px; font-weight: 500; }
.kb_citaat blockquote::before { content: "\201C"; }
.kb_citaat blockquote::after { content: "\201D"; }
.kb_citaat figcaption { font-size: 14px; color: var(--kb-grijs); }
.kb_keurmerken { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.kb_bewijs > .kb_keurmerken:only-child { grid-column: 1 / -1; grid-template-columns: repeat(3, 1fr); }
.kb_keurmerken li { background: var(--kb-wit); border: 1px solid var(--kb-rand); border-radius: 12px; padding: 14px 18px; display: flex; gap: 12px; align-items: baseline; }
.kb_keurmerken b { font-size: 18px; color: var(--kb-blauw); white-space: nowrap; }
.kb_keurmerken span { font-size: 14px; color: var(--kb-grijs); }

/* ====== FAQ (native details/summary, geen script nodig) ====== */
.kb_faq_item { background: var(--kb-wit); border: 1px solid var(--kb-rand); border-radius: 12px; margin-bottom: 12px; padding: 4px 24px; }
.kb_faq_item:not([open]):hover { background: var(--kb-licht); }
.kb_faq summary { display: flex; justify-content: space-between; align-items: center; cursor: pointer; padding: 18px 0; gap: 16px; list-style: none; }
.kb_faq summary::-webkit-details-marker { display: none; }
.kb_faq summary h3 { font-size: 17px; font-weight: 600; color: var(--kb-navy); margin: 0; padding-bottom: 0; }
.kb_faq_item p { font-size: 15px; line-height: 1.65; color: var(--kb-grijs); padding: 15px 0 18px; margin: 0; }
.kb_faq .plus, .kb_faq .minus { max-width: 22px; max-height: 22px; flex-shrink: 0; }
.kb_faq_item[open] .plus, .kb_faq_item:not([open]) .minus { display: none; }

/* ====== OVERZICHT ====== */
.kb_tegels { list-style: none; padding: 0; margin: 8px 0 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr)); gap: 20px; }
.kb_tegel { display: flex; flex-direction: column; text-decoration: none; }
.kb_tegel:hover { text-decoration: none; }
.kb_tegel .ai_icon { flex-shrink: 0; }
.kb_pagina .kb_tegel p { margin-bottom: 20px; flex: 1; }
.kb_tegel_lees { font-size: 14px; font-weight: 700; color: var(--kb-blauw); margin-top: auto; }

/* ====== VERWANTE ARTIKELEN ====== */
.kb_verwant { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr)); gap: 20px; font-size: 15px; }
.kb_verwant > span { grid-column: 1 / -1; font-size: 12px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; color: var(--kb-blauw); }
.kb_verwant a { display: flex; align-items: center; color: var(--kb-navy); font-weight: 600; line-height: 1.5; text-decoration: none; }
.kb_verwant a:hover { color: var(--kb-blauw); text-decoration: none; }

/* ====== TOEGANKELIJKHEID & RESPONSIVE ====== */
@media (prefers-reduced-motion: reduce) {
    .kb_tegel { transition: none !important; }
    .kb_pagina [data-aos] { opacity: 1 !important; transform: none !important; transition: none !important; }
}
/* 991px = breakpoint van de site-header (menu verdwijnt) */
@media (max-width: 991px) {
    .kb_intro_grid { grid-template-columns: 1fr; gap: 30px; }
    .kb_illustratie { max-width: 480px; margin: 0 auto; }
    .kb_twee, .kb_reken, .kb_bewijs { grid-template-columns: 1fr; }
    .kb_flow { grid-template-columns: 1fr 1fr; }
    .kb_onderdelen { grid-template-columns: 1fr 1fr; }
    .kb_vinkjes { grid-template-columns: 1fr; }
    .kb_bewijs > .kb_keurmerken:only-child { grid-template-columns: 1fr; }
}
@media (max-width: 575px) {
    .kb_blok { padding: 60px 0; }
    .kb_flow, .kb_onderdelen { grid-template-columns: 1fr; }
    .kb_reken_invoer { grid-template-columns: 1fr 110px; }
    .kb_pagina .kb_helpt { padding: 26px 20px; }
    .kb_kenmerken div { flex-direction: column; gap: 2px; }
    .kb_kenmerken dd { text-align: left; }
}