:root{
  --groen:#15803d;
  --groen-licht:#22c55e;
  --geel:#eab308;
  --bg:#f1f5f9;
  --kaart:#ffffff;
  --tekst:#0f172a;
  --grijs:#64748b;
  --rand:#e2e8f0;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--tekst);
  line-height:1.5;
  padding-bottom:env(safe-area-inset-bottom);
}

/* Topbar */
.topbar{
  position:sticky;top:0;z-index:10;
  background:var(--groen);
  color:#fff;
  padding:calc(env(safe-area-inset-top) + 14px) 16px 14px;
  display:flex;align-items:center;gap:10px;
  box-shadow:0 2px 10px rgba(0,0,0,.15);
}
.topbar h1{font-size:22px;margin:0;font-weight:700}
.back{
  background:rgba(255,255,255,.2);
  border:none;color:#fff;
  font-size:17px;font-weight:600;
  padding:8px 14px;border-radius:999px;
  cursor:pointer;
}
.back:active{background:rgba(255,255,255,.35)}

/* Layout */
#app{max-width:640px;margin:0 auto;padding:16px}
.lead{font-size:19px;color:var(--grijs);margin:6px 2px 18px}

/* Home cards */
.card{
  width:100%;
  display:flex;align-items:center;gap:14px;
  background:var(--kaart);
  border:2px solid var(--rand);
  border-radius:18px;
  padding:18px 16px;
  margin-bottom:14px;
  text-align:left;
  cursor:pointer;
  transition:transform .05s, border-color .15s;
}
.card:active{transform:scale(.98);border-color:var(--groen-licht)}
.card-emoji{font-size:36px;line-height:1;flex:0 0 auto}
.card-text{display:flex;flex-direction:column;gap:3px;flex:1}
.card-title{font-size:20px;font-weight:700}
.card-sub{font-size:15px;color:var(--grijs)}
.chev{font-size:30px;color:var(--grijs);flex:0 0 auto}

/* Install-uitleg */
.install{
  margin-top:6px;
  background:var(--kaart);
  border:2px solid var(--rand);
  border-radius:18px;
  overflow:hidden;
}
.install summary{
  list-style:none;cursor:pointer;
  padding:16px;font-size:17px;font-weight:600;
  color:var(--groen);
}
.install summary::-webkit-details-marker{display:none}
.install[open] summary{border-bottom:1px solid var(--rand)}
.install-body{padding:4px 16px 12px;font-size:16px}
.install-body p{margin:12px 0}

/* Detail view */
.view-title{font-size:24px;margin:4px 2px 16px}
.tip{
  background:#ecfdf5;border:1px solid #a7f3d0;
  border-radius:14px;padding:14px 16px;font-size:17px;margin:0 0 18px;
}
.warn{
  background:#fffbeb;border:1px solid #fde68a;
  border-radius:14px;padding:14px 16px;font-size:17px;margin-top:18px;
}
.warn ul{margin:8px 0 0;padding-left:22px}
.warn li{margin:4px 0}

/* Steps */
.steps{list-style:none;margin:0;padding:0}
.steps>li{
  background:var(--kaart);
  border:2px solid var(--rand);
  border-radius:18px;
  padding:16px;
  margin-bottom:16px;
}
.step-txt{font-size:19px}
.step-txt::after{content:"";display:block;clear:both}
.num{
  float:left;
  width:34px;height:34px;
  margin:2px 12px 4px 0;
  background:var(--groen);color:#fff;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:18px;
}
.steps img{
  display:block;width:100%;
  border-radius:12px;margin-top:14px;
  border:1px solid var(--rand);
}
.steps .klaar{background:#ecfdf5;border-color:#a7f3d0}
.steps .klaar .step-txt{font-size:20px;font-weight:600}

b.groen{color:var(--groen)}
b.blauw{color:#2563eb}

/* Sub-koppen binnen een hoofdstuk */
.sub-kop{
  font-size:20px;margin:22px 2px 12px;
  padding-top:4px;
}
/* Losse foto (buiten een stap) */
.losse-foto{
  display:block;width:100%;
  border-radius:14px;margin:0 0 4px;
  border:1px solid var(--rand);
}
/* Let-op kaart op het startscherm */
.kaart-let{border-color:#fde68a;background:#fffbeb}
.kaart-let:active{border-color:var(--geel)}

/* Footer */
.foot{
  text-align:center;color:var(--grijs);
  font-size:13px;padding:20px 16px 30px;
}

/* Transitions between views */
.view{animation:fade .18s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}