/* ============================================================
   Helveron 2026 — premium design-systeem
   Eén gedeeld stylesheet voor alle marketingpagina's.
   Gemodelleerd op de FBC-lat (fbc-2026.css), in Helveron-huisstijl:
   groen accent, Sora, Fundament-logo, donker/licht-ritme.
   ============================================================ */

:root{
  /* Oppervlakken (warm, niet-zuiver-wit) */
  --paper:#F3F7F4;      /* default lichte achtergrond */
  --paper-2:#E8F0EB;    /* secundair licht */
  --card:#FFFFFF;       /* kaart-oppervlak */
  --ink:#0E1A14;        /* zeer donkere tekst op licht */
  --dark:#0C1A14;       /* diep groen-zwart (anker-secties) */
  --dark-2:#10231B;     /* iets lichter donker */

  /* Accent (groen) — één accent, ingetogen ingezet */
  --accent:#2E9E6E;
  --accent-strong:#1B6E4A;
  --accent-2:#6FD3A5;   /* lichter groen, voor tekst/accenten op donker */
  --accent-soft:#E2F2EA;

  /* Groen-tint-schaal (grafiekjes / fills) */
  --g1:#CFE8DA;--g2:#A7D9BE;--g3:#7CC6A0;--g4:#4FB082;

  /* Tekst */
  --muted:#586A60;      /* gedempte body-tekst op licht */
  --sky:#9FB8AC;        /* gedempte tekst op donker */

  /* Lijnen */
  --line:rgba(14,26,20,.12);
  --line-d:rgba(180,214,195,.14);

  /* Typografie */
  --display:'Sora',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --body:'Sora',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;

  /* Maat & ritme */
  --gut:clamp(20px,3.4vw,46px);
  --maxw:1180px;
  --ease:cubic-bezier(.2,.7,.2,1);

  /* Radius */
  --r-sm:10px;--r:16px;--r-lg:20px;--r-pill:999px;

  /* Diepte (schaduw-schaal) */
  --sh-1:0 1px 2px rgba(14,26,20,.04),0 18px 42px -26px rgba(14,26,20,.20);
  --sh-2:0 26px 56px -30px rgba(27,110,74,.26);
  --sh-3:0 40px 90px -42px rgba(0,0,0,.55);
}

/* ---- Reset & basis ---- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
}
body{font-family:var(--body);background:var(--paper);color:var(--ink);font-size:17px;line-height:1.62;letter-spacing:-.003em;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
/* fijne grain-overlay voor diepte */
body::after{content:"";position:fixed;inset:0;pointer-events:none;z-index:9998;opacity:.04;mix-blend-mode:multiply;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;display:block}
button{font-family:inherit}
::selection{background:var(--accent-soft);color:var(--accent-strong)}

/* ---- Type-schaal (clamp, vloeiend) ---- */
h1,h2,h3,h4{font-family:var(--display);font-weight:800;line-height:1.02;letter-spacing:-.028em;color:var(--ink)}
h1{font-size:clamp(40px,5.2vw,72px)}
h2{font-size:clamp(28px,3.9vw,52px);letter-spacing:-.026em}
h3{font-size:clamp(20px,2.1vw,26px);letter-spacing:-.02em;font-weight:700}
h4{font-size:clamp(17px,1.5vw,19px);font-weight:700;letter-spacing:-.015em}
.kick{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-strong)}
.lead{font-size:clamp(17px,1.35vw,19px);line-height:1.6;color:var(--muted)}
.em{color:var(--accent-strong)}

/* ---- Layout ---- */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}
.section{padding:clamp(84px,11vw,156px) 0}
.grid12{display:grid;grid-template-columns:repeat(12,1fr);column-gap:var(--gut)}
.head{max-width:680px}
.head.center{margin:0 auto;text-align:center}
.head .kick{margin-bottom:18px}
.head h2{margin-bottom:16px}
.head .lead{max-width:60ch}

/* Sectie-tinten / donker-licht-ritme */
.s-paper{background:var(--paper)}
.s-paper-2{background:var(--paper-2)}
.s-dark{background:var(--dark);color:#fff}
.s-dark h1,.s-dark h2,.s-dark h3,.s-dark h4{color:#fff}
.s-dark .lead{color:var(--sky)}
.s-dark .kick{color:var(--accent-2)}

/* ---- Knoppen ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-family:inherit;font-weight:700;font-size:15px;line-height:1;padding:14px 26px;border-radius:var(--r-pill);border:1.5px solid transparent;cursor:pointer;transition:transform .18s var(--ease),background .2s,border-color .2s,box-shadow .2s var(--ease)}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--accent-strong);color:#fff}
.btn-primary:hover{background:#175e3f;transform:translateY(-2px);box-shadow:0 18px 40px -18px rgba(27,110,74,.6)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--accent);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 18px 40px -18px rgba(0,0,0,.4)}
.s-dark .btn-ghost{color:#fff;border-color:var(--line-d)}
.s-dark .btn-ghost:hover{border-color:var(--accent-2)}

/* ---- Toegankelijkheid: zichtbare focus ---- */
a:focus-visible,button:focus-visible,[role="button"]:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

/* ---- Navigatie (lockup + scroll-solid + blur) ---- */
.nav{position:fixed;inset:0 0 auto 0;z-index:100;padding:22px 0;transition:background .35s,padding .35s,border-color .35s,box-shadow .35s}
.nav-in{max-width:var(--maxw);margin:0 auto;padding:0 var(--gut);display:flex;align-items:center;gap:36px}
.nav.solid{background:rgba(243,247,244,.82);backdrop-filter:saturate(180%) blur(16px);padding:13px 0;border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(0,0,0,.02)}
.brand{display:flex;align-items:center;gap:11px}
.brand svg{width:38px;height:38px;transition:width .35s,height .35s}
.nav.solid .brand svg{width:32px;height:32px}
.brand b{font-family:var(--display);font-weight:800;font-size:20px;letter-spacing:-.02em;color:var(--ink)}
.nav-links{display:flex;align-items:center;gap:30px;margin-left:6px}
.nav-links a{position:relative;font-size:14.5px;font-weight:500;color:var(--muted);transition:color .2s}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:-6px;height:2px;background:var(--accent);border-radius:2px;transition:right .25s var(--ease)}
.nav-links a:hover,.nav-links a.cur{color:var(--accent-strong)}
.nav-links a:hover::after,.nav-links a.cur::after{right:0}
.nav-cta{margin-left:auto;display:inline-flex;align-items:center;background:var(--accent-strong);color:#fff;padding:11px 20px;font-size:14px;font-weight:700;border-radius:var(--r-pill);transition:background .2s,transform .18s var(--ease)}
.nav-cta:hover{background:#175e3f;transform:translateY(-1px)}

/* ---- Bento-raster (Raycast-logica: veel info, weinig ruis) ---- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}
.bi{position:relative;overflow:hidden;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:clamp(22px,2.3vw,30px);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}
.bi:hover{transform:translateY(-4px);box-shadow:var(--sh-1);border-color:#cfe1d8}
.bi .ico{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;background:var(--accent-soft);color:var(--accent-strong);margin-bottom:16px;position:relative;z-index:1}
.bi h3{margin-bottom:8px;position:relative;z-index:1}
.bi p{font-size:14.5px;color:var(--muted);line-height:1.55;position:relative;z-index:1}
.bi .ghost{position:absolute;right:-6px;bottom:-30px;font-family:var(--display);font-weight:800;font-size:clamp(120px,15vw,170px);line-height:1;color:rgba(46,158,110,.06);z-index:0;pointer-events:none;user-select:none}
.bi.accent{background:var(--accent-strong);border-color:var(--accent-strong);color:#fff}
.bi.accent h3,.bi.accent p{color:#fff}
.bi.accent p{color:rgba(255,255,255,.82)}
.bi.accent .ico{background:rgba(255,255,255,.16);color:#fff}
.bi.accent .ghost{color:rgba(255,255,255,.10)}
.bi.dark{background:var(--dark);border-color:var(--dark);color:#fff}
.bi.dark h3,.bi.dark p{color:#fff}.bi.dark p{color:var(--sky)}
.bi.dark .ico{background:rgba(255,255,255,.08);color:var(--accent-2)}
.w4{grid-column:span 4}.w5{grid-column:span 5}.w6{grid-column:span 6}.w7{grid-column:span 7}.w8{grid-column:span 8}.w12{grid-column:span 12}

/* ---- Hover-uitklap-kaart (Udemy-patroon) ---- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.ucard{position:relative;overflow:hidden;height:clamp(300px,30vw,360px);border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);color:inherit;display:flex;flex-direction:column;justify-content:flex-end;transition:transform .35s var(--ease),box-shadow .35s var(--ease)}
.ucard:hover{transform:translateY(-6px);box-shadow:var(--sh-2)}
.ucard-media{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;overflow:hidden}
.ucard-media .num{font-family:var(--display);font-weight:800;font-size:clamp(90px,11vw,150px);letter-spacing:-.05em;line-height:1;color:rgba(255,255,255,.16)}
.ucard-badge{position:absolute;top:16px;left:16px;z-index:3;background:rgba(255,255,255,.94);border:1px solid rgba(14,26,20,.1);border-radius:9px;padding:7px 12px;font-size:12.5px;font-weight:700;color:var(--ink)}
.ucard-panel{position:relative;z-index:2;background:var(--card);border-top:1px solid var(--line);padding:20px 22px 22px}
.ucard-panel h3{font-size:20px}
.ucard-desc{max-height:0;opacity:0;overflow:hidden;color:var(--muted);font-size:14.5px;line-height:1.55;transition:max-height .45s var(--ease),opacity .35s,margin-top .35s}
.ucard:hover .ucard-desc{max-height:16em;opacity:1;margin-top:11px}
.ucard.c1 .ucard-media{background:linear-gradient(150deg,var(--accent),var(--accent-strong))}
.ucard.c2 .ucard-media{background:linear-gradient(150deg,var(--g4),#0f5a3a)}
.ucard.c3 .ucard-media{background:linear-gradient(150deg,#1d7d54,var(--dark))}

/* ---- Tabs-productframe (Linear/Vercel) ---- */
.tabs{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:24px}
.tab{font-size:13px;font-weight:600;letter-spacing:.01em;padding:10px 18px;border:1px solid var(--line);border-radius:var(--r-pill);background:transparent;color:var(--muted);cursor:pointer;transition:all .22s var(--ease)}
.tab.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.frame{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:0 34px 80px -50px rgba(14,26,20,.5)}
.frame-top{display:flex;align-items:center;gap:7px;padding:13px 16px;border-bottom:1px solid var(--line);background:var(--paper-2)}
.frame-top i{width:9px;height:9px;border-radius:50%;background:var(--line)}
.frame-top span{margin-left:8px;font-size:11.5px;font-weight:600;color:var(--muted)}
.frame-screen{display:none;padding:clamp(20px,2.5vw,30px)}
.frame-screen.on{display:block;animation:fadein .4s var(--ease)}
@keyframes fadein{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---- Interactieve keten (Stripe-logica: stappen + intekenende lijn) ---- */
.keten-rail{position:relative;display:grid;grid-template-columns:repeat(var(--kn,4),1fr);gap:14px;margin-bottom:28px}
.keten-rail::before{content:"";position:absolute;left:25px;right:25px;top:25px;height:2px;background:var(--line)}
.kfill{position:absolute;left:25px;top:25px;height:2px;background:var(--accent);transition:width .5s var(--ease);z-index:1}
.knode{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:10px;background:none;border:none;cursor:pointer;text-align:center}
.kdot{width:50px;height:50px;border-radius:50%;background:var(--card);border:2px solid var(--line);color:var(--muted);font-weight:800;display:flex;align-items:center;justify-content:center;transition:all .3s var(--ease)}
.knode.done .kdot,.knode.on .kdot{border-color:var(--accent);background:var(--accent);color:#fff}
.knode.on .kdot{box-shadow:0 0 0 6px rgba(46,158,110,.16)}
.klabel{font-size:13px;font-weight:600;color:var(--muted)}
.knode.on .klabel{color:var(--ink)}
.kpanel{display:none}
.kpanel.on{display:block;animation:fadein .4s var(--ease)}

/* ---- Split-sectie (tekst + mock) ---- */
.split{display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(34px,5vw,72px);align-items:center}
.split.rev{grid-template-columns:1.15fr 1fr}
.mock{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--sh-1)}

/* ---- Stat-band ---- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.stat .v{font-family:var(--display);font-weight:800;font-size:clamp(34px,4.4vw,52px);letter-spacing:-.03em;line-height:1;color:var(--accent-2);font-variant-numeric:tabular-nums}
.stat .l{margin-top:12px;font-size:13.5px;line-height:1.45;color:var(--sky);max-width:22ch}

/* ---- Slot-CTA (donker anker) ---- */
.cta-band{position:relative;overflow:hidden}
.cta-band .glow{position:absolute;inset:0;pointer-events:none;background:radial-gradient(60% 100% at 50% 120%,rgba(46,158,110,.28),transparent 66%),radial-gradient(40% 80% at 86% 0%,rgba(63,185,204,.12),transparent 60%)}
.cta-band .inner{position:relative;text-align:center;max-width:640px;margin:0 auto}
.cta-band h2{margin-bottom:14px}
.cta-band p{color:var(--sky);font-size:17px;margin:0 auto 28px;max-width:520px}

/* ---- Footer ---- */
.footer{background:var(--dark);color:#fff;padding:72px 0 32px}
.footer .top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer .motto{color:var(--sky);font-size:14px;margin-top:10px;max-width:30ch}
.footer h5{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-2);margin-bottom:14px}
.footer a{display:block;color:rgba(255,255,255,.66);font-size:14px;padding:4px 0;transition:color .2s}
.footer a:hover{color:#fff}
.footer .base{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-top:44px;padding-top:22px;border-top:1px solid var(--line-d);color:rgba(255,255,255,.5);font-size:13px}

/* ---- Scroll-reveal (richting, geen versiering) — no-JS-fallback ---- */
.js-anim [data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.js-anim [data-reveal].in{opacity:1;transform:none}
/* Directionele reveals (geen uniforme fade overal) */
.js-anim [data-reveal="left"]{transform:translateX(-28px)}
.js-anim [data-reveal="right"]{transform:translateX(28px)}
.js-anim [data-reveal="left"].in,.js-anim [data-reveal="right"].in{transform:none}

/* ---- Premium asymmetrisch (best-of-best devices) ---- */
/* Links-uitgelijnde editorial sectiekop (breekt symmetrie) */
.head.left{margin:0 0 clamp(34px,4vw,54px);max-width:640px;text-align:left}
.head.left .lead{margin-left:0}

/* Feature-split: tekst + groot gelaagd beeld, alternerend (Linear/Mintlify) */
.fsplit{display:grid;grid-template-columns:.9fr 1.12fr;gap:clamp(34px,5vw,78px);align-items:center}
.fsplit + .fsplit{margin-top:clamp(60px,8vw,118px)}
.fsplit.rev .fsplit-text{order:2}
.fsplit-text .kick{margin-bottom:14px}
.fsplit-text h2{margin-bottom:15px}
.fsplit-vis{position:relative;min-width:0}

/* Blueprint-grid op donkere tegel (Vercel-aesthetiek, technische diepte) */
.blueprint{position:relative;overflow:hidden;background:var(--dark);color:#fff}
.blueprint::before{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(110,211,165,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(110,211,165,.08) 1px,transparent 1px);background-size:32px 32px;-webkit-mask-image:radial-gradient(78% 78% at 64% 26%,#000,transparent);mask-image:radial-gradient(78% 78% at 64% 26%,#000,transparent)}
.blueprint::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(46% 60% at 80% 6%,rgba(46,158,110,.24),transparent 62%)}
.blueprint > *{position:relative;z-index:1}

/* Gelaagde / overlappende kaart (diepte, breekt het kader) */
.layer{position:relative}
.layer .float{position:absolute;border:1px solid var(--line);border-radius:var(--r);background:var(--card);box-shadow:var(--sh-2);overflow:hidden}

/* ---- Responsive ---- */
@media (max-width:1000px){
  .split,.split.rev{grid-template-columns:1fr;gap:34px}
  .fsplit,.fsplit.rev{grid-template-columns:1fr;gap:30px}
  .fsplit.rev .fsplit-text{order:0}
  .fsplit + .fsplit{margin-top:64px}
  .cards{grid-template-columns:repeat(2,1fr)}
  .footer .top{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .nav-links{display:none}
  .bento{gap:14px}
  .w4,.w5,.w6,.w7,.w8{grid-column:span 12}
  .cards{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:22px}
  .keten-rail{grid-template-columns:1fr;gap:18px}
  .keten-rail::before,.kfill{display:none}
  .footer .top{grid-template-columns:1fr 1fr}
}
@media (max-width:460px){
  .stat-grid,.footer .top{grid-template-columns:1fr}
}