/* ══════════════════════════════════════════════════════════════
   JOHAN BOEREMA · johanboerema.nl
   ──────────────────────────────────────────────────────────────
   Persoonlijke site van een interim AI & Business Transformation
   Lead. Rustig, tekstgedreven, één accentkleur. Twee vlakken:
   PAPIER (licht, de tekst) en INKT (donker, de banden met de
   kernboodschap en het contact).

   Kleur   paper #F7F4EE · ink #1B2430 · accent #B4502B
   Type    Iowan Old Style / Palatino / Georgia (koppen)
           systeem-sans (tekst) · SF Mono (labels, nummering)
   ═══════════════════════════════════════════════════════════════ */

:root{
  --paper:#F7F4EE; --paper-2:#EFEAE1; --paper-3:#E3DCCF;
  --ink:#1B2430; --ink-2:#48525F; --ink-3:#7A8492;
  --accent:#B4502B; --accent-deep:#8C3A1D; --accent-soft:#F1DED4;
  --deep:#1B2430; --deep-2:#243040; --on-deep:#EEE9DF; --on-deep-2:#B7BFC9;
  --line:rgba(27,36,48,.14); --line-deep:rgba(238,233,223,.18);
  --serif:"Iowan Old Style","Palatino Linotype","Book Antiqua",Palatino,Georgia,serif;
  --sans:system-ui,-apple-system,"Segoe UI","Helvetica Neue",Arial,sans-serif;
  --mono:"SF Mono",Menlo,Consolas,"Roboto Mono",monospace;
  --pad:clamp(20px,5vw,64px);
  --maxw:1120px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
  font-size:17px;line-height:1.62;-webkit-font-smoothing:antialiased;}
img,svg{max-width:100%;}
a{color:inherit;}
*:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.wrap{max-width:var(--maxw);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad);}

/* ── typografie ──────────────────────────────────────────────── */
.eyebrow{font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent-deep);}
.deep .eyebrow{color:var(--on-deep-2);}
h1,h2,h3,h4{font-family:var(--serif);font-weight:400;letter-spacing:-.005em;margin:0;text-wrap:balance;}
h1{font-size:clamp(36px,5.2vw,64px);line-height:1.05;}
h2{font-size:clamp(28px,3.6vw,42px);line-height:1.12;}
h3{font-size:clamp(21px,2.2vw,26px);line-height:1.22;}
h4{font-size:19px;line-height:1.3;}
p{margin:0;}
.lede{font-size:clamp(17px,1.4vw,20px);line-height:1.6;max-width:62ch;color:var(--ink-2);}
.deep .lede{color:var(--on-deep-2);}
.muted{color:var(--ink-3);}
ul.clean{list-style:none;margin:0;padding:0;}

/* ── secties ─────────────────────────────────────────────────── */
.sec{padding:clamp(60px,7.5vw,112px) 0;}
.sec + .sec{border-top:1px solid var(--line);}
.sec-head{display:flex;flex-direction:column;gap:14px;max-width:66ch;margin-bottom:clamp(30px,4vw,52px);}
.deep{background:var(--deep);color:var(--on-deep);}
.deep + .sec,.sec + .deep{border-top:none;}
.tint{background:var(--paper-2);}

/* ── knoppen ─────────────────────────────────────────────────── */
.btn{display:inline-block;border:1px solid var(--accent);cursor:pointer;font-family:var(--sans);
  font-size:15px;font-weight:500;padding:13px 22px;background:var(--accent);color:#fff;
  text-decoration:none;transition:background .15s,transform .15s;}
.btn:hover{background:var(--accent-deep);border-color:var(--accent-deep);transform:translateY(-1px);}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn.ghost:hover{background:var(--ink);color:var(--paper);}
.deep .btn.ghost{color:var(--on-deep);border-color:var(--on-deep);}
.deep .btn.ghost:hover{background:var(--on-deep);color:var(--ink);}
.cta-row{display:flex;gap:14px;align-items:center;flex-wrap:wrap;}
.arrow-link{font-weight:500;text-decoration:none;border-bottom:1px solid var(--accent);padding-bottom:1px;}
.arrow-link::after{content:" \2192";}
.arrow-link:hover{color:var(--accent-deep);}

/* ══ NAV ═══════════════════════════════════════════════════════ */
.nav{position:sticky;top:0;z-index:60;background:rgba(247,244,238,.92);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);}
.nav .in{display:flex;align-items:center;justify-content:space-between;gap:22px;
  padding-top:14px;padding-bottom:14px;}
.brand{font-family:var(--serif);font-size:20px;text-decoration:none;letter-spacing:.01em;}
.brand small{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-3);margin-top:2px;}
.nav nav{display:flex;gap:26px;align-items:center;}
.nav nav a{text-decoration:none;font-size:15px;color:var(--ink-2);}
.nav nav a:hover{color:var(--ink);}
.nav nav a.primary{color:var(--accent-deep);font-weight:500;}
#menuKnop{display:none;background:none;border:1px solid var(--ink);padding:8px 14px;
  font:inherit;font-size:14px;cursor:pointer;}
@media (max-width:760px){
  #menuKnop{display:block;}
  .nav nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;
    align-items:flex-start;gap:0;background:var(--paper);border-bottom:1px solid var(--line);}
  .nav.open nav{display:flex;}
  .nav nav a{padding:14px var(--pad);width:100%;border-top:1px solid var(--line);}
}

/* ══ HERO ══════════════════════════════════════════════════════ */
.hero{padding:clamp(64px,9vw,128px) 0 clamp(56px,7vw,96px);}
.hero .grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:clamp(32px,5vw,72px);
  align-items:end;}
.hero h1{margin:18px 0 26px;}
.hero .cta-row{margin-top:32px;}
.hero-aside{border-left:1px solid var(--line);padding-left:clamp(20px,2.5vw,36px);
  font-size:15.5px;color:var(--ink-2);display:flex;flex-direction:column;gap:18px;}
.hero-aside strong{display:block;color:var(--ink);font-weight:500;margin-bottom:4px;}
@media (max-width:860px){.hero .grid{grid-template-columns:1fr;}
  .hero-aside{border-left:none;border-top:1px solid var(--line);padding:24px 0 0;}}

/* ── quote-band ──────────────────────────────────────────────── */
.quote{font-family:var(--serif);font-size:clamp(22px,2.7vw,32px);line-height:1.35;max-width:30ch;
  text-wrap:balance;}
.quote-band .grid{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);
  gap:clamp(28px,5vw,72px);align-items:center;}
.quote-band .lede{max-width:46ch;}
@media (max-width:860px){.quote-band .grid{grid-template-columns:1fr;}}

/* ══ PIJLERS ═══════════════════════════════════════════════════ */
.pillars{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(22px,3vw,44px);}
.pillar{border-top:2px solid var(--ink);padding-top:20px;display:flex;flex-direction:column;gap:12px;}
.pillar .num{font-family:var(--mono);font-size:12px;color:var(--accent-deep);letter-spacing:.1em;}
.pillar p{color:var(--ink-2);font-size:16px;}
@media (max-width:760px){.pillars{grid-template-columns:1fr;}}

/* ══ CASES ═════════════════════════════════════════════════════ */
.cases{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(20px,3vw,36px);}
.case{display:flex;flex-direction:column;gap:16px;background:var(--paper);border:1px solid var(--line);
  padding:clamp(24px,3vw,40px);text-decoration:none;color:inherit;transition:border-color .15s,transform .15s;}
.case:hover{border-color:var(--accent);transform:translateY(-2px);}
.case .kicker{font-size:15px;color:var(--ink-2);}
.case h3{margin-top:2px;}
.case .proof{font-size:15.5px;color:var(--ink-2);flex:1;}
.case .more{color:var(--accent-deep);font-weight:500;margin-top:6px;}
.tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;
  padding:5px 9px;border:1px solid var(--line);color:var(--ink-2);background:var(--paper-2);}
.deep .tag{border-color:var(--line-deep);color:var(--on-deep-2);background:transparent;}
@media (max-width:760px){.cases{grid-template-columns:1fr;}}

/* ══ WERKWIJZE ═════════════════════════════════════════════════ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(18px,2.5vw,32px);
  counter-reset:stap;}
.step{border-top:1px solid var(--line-deep);padding-top:18px;}
.step .num{font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--on-deep-2);}
.step h4{margin:10px 0 8px;}
.step p{font-size:15.5px;color:var(--on-deep-2);}
@media (max-width:900px){.steps{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:560px){.steps{grid-template-columns:1fr;}}

/* ══ LOOPBAAN ══════════════════════════════════════════════════ */
.timeline{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:clamp(28px,5vw,72px);}
.timeline ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--line);}
.timeline li{position:relative;padding:0 0 22px 26px;color:var(--ink-2);font-size:16px;}
.timeline li::before{content:"";position:absolute;left:-5px;top:9px;width:9px;height:9px;
  border-radius:50%;background:var(--paper);border:2px solid var(--accent);}
.timeline li strong{display:block;color:var(--ink);font-weight:500;}
.timeline li:last-child{padding-bottom:0;}
@media (max-width:860px){.timeline{grid-template-columns:1fr;}}

/* ══ INZET ═════════════════════════════════════════════════════ */
.two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(28px,4vw,64px);}
.two h4{margin-bottom:12px;}
.two ul{margin:0;padding-left:18px;color:var(--ink-2);}
.two li{margin-bottom:8px;}
@media (max-width:760px){.two{grid-template-columns:1fr;}}

/* ══ CONTACT ═══════════════════════════════════════════════════ */
.contact .grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:clamp(28px,5vw,72px);
  align-items:start;}
.contact .lede{margin-top:16px;}
.contact-card{border:1px solid var(--line-deep);padding:clamp(22px,3vw,34px);display:flex;
  flex-direction:column;gap:14px;font-size:16px;}
.contact-card a.mail{font-family:var(--serif);font-size:clamp(20px,2.2vw,26px);text-decoration:none;
  border-bottom:1px solid var(--accent);padding-bottom:2px;align-self:flex-start;}
.contact-card a.mail:hover{color:#fff;}
.contact-card .muted{color:var(--on-deep-2);}
@media (max-width:860px){.contact .grid{grid-template-columns:1fr;}}

/* ══ FOOTER ════════════════════════════════════════════════════ */
footer{border-top:1px solid var(--line);padding:26px 0;font-size:14px;color:var(--ink-3);}
footer .in{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}
footer a{text-decoration:none;}
footer a:hover{color:var(--ink);}

/* ══ CASEPAGINA ════════════════════════════════════════════════ */
.case-hero{padding:clamp(56px,8vw,112px) 0 clamp(44px,5vw,72px);}
.case-hero .crumb{font-size:14.5px;color:var(--ink-3);margin-bottom:22px;}
.case-hero .crumb a{text-decoration:none;}
.case-hero .crumb a:hover{color:var(--ink);}
.case-hero h1{font-size:clamp(32px,4.6vw,56px);margin:14px 0 20px;max-width:22ch;}
.case-hero .tags{margin-top:28px;}
.case-body{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(240px,.8fr);gap:clamp(32px,6vw,88px);
  align-items:start;}
.case-body .main{display:flex;flex-direction:column;gap:clamp(40px,5vw,64px);}
.blok{display:grid;grid-template-columns:64px minmax(0,1fr);gap:16px;}
.blok .num{font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--accent-deep);padding-top:8px;}
.blok h2{font-size:clamp(24px,2.8vw,32px);margin-bottom:14px;}
.blok p + p{margin-top:12px;}
.blok p{color:var(--ink-2);}
.blok ul{margin:10px 0 0;padding-left:18px;color:var(--ink-2);}
.blok li{margin-bottom:6px;}
.blok h4{margin:20px 0 6px;}
.note{border-left:3px solid var(--accent);background:var(--accent-soft);padding:16px 20px;margin-top:18px;
  font-size:15.5px;color:var(--ink);}
.note strong{font-weight:500;}
.aside{position:sticky;top:88px;display:flex;flex-direction:column;gap:22px;}
.aside .box{border:1px solid var(--line);padding:22px 24px;background:var(--paper-2);}
.aside .box h4{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent-deep);margin-bottom:14px;}
.sys{width:100%;border-collapse:collapse;font-size:14.5px;}
.sys th{text-align:left;font-weight:500;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-3);padding:0 0 8px;}
.sys td{vertical-align:top;padding:7px 0;border-top:1px solid var(--line);color:var(--ink-2);}
.sys td:first-child{padding-right:14px;color:var(--ink);}
.aside .other{font-size:15px;color:var(--ink-2);}
.aside .other strong{display:block;color:var(--ink);font-weight:500;margin:6px 0 2px;}
@media (max-width:860px){
  .case-body{grid-template-columns:1fr;}
  .aside{position:static;}
  .blok{grid-template-columns:1fr;gap:6px;}
}
.case-cta{padding:clamp(56px,7vw,96px) 0;}
.case-cta .quote{max-width:34ch;margin-bottom:22px;}
.case-cta p{max-width:64ch;color:var(--on-deep-2);}
.case-cta .cta-row{margin-top:30px;}
.contact-card .arrow-link{color:var(--on-deep);border-bottom-color:var(--accent);}
.contact-card .arrow-link:hover{color:#fff;}