/* Thuisbatterijwijs - mobiel eerst. Ronnie kijkt op zijn telefoon. */
:root{
  --achter:#f7f8f6; --kaart:#fff; --inkt:#14201c; --grijs:#5a6a63; --lijn:#dfe5e0;
  --groen:#0f6b44; --groen-licht:#e7f3ec; --groen-diep:#0a4d31;
  --oker:#b06a12; --oker-licht:#fdf2e2; --rood:#a32218; --rood-licht:#fdeceb;
  --blauw:#1d4e79; --blauw-licht:#e9f1f8;
  --r:14px; --schaduw:0 1px 2px rgba(20,32,28,.06),0 8px 24px rgba(20,32,28,.05);
  --max:72rem;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--achter);color:var(--inkt);
  font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
img{max-width:100%;height:auto;display:block}
a{color:var(--groen-diep)}
a:hover{color:var(--groen)}
h1,h2,h3,h4{line-height:1.2;margin:1.8rem 0 .6rem;letter-spacing:-.015em;text-wrap:balance}
h1{font-size:clamp(1.7rem,5.5vw,2.6rem);margin-top:0}
h2{font-size:clamp(1.3rem,4vw,1.75rem)}
h3{font-size:clamp(1.1rem,3vw,1.3rem)}
p,ul,ol{margin:0 0 1rem}
code{background:var(--groen-licht);padding:.1em .35em;border-radius:5px;font-size:.9em}
blockquote{margin:1.2rem 0;padding:.8rem 1rem;border-left:4px solid var(--groen);
  background:var(--groen-licht);border-radius:0 var(--r) var(--r) 0}
blockquote p:last-child{margin:0}
.wrap{max-width:var(--max);margin:0 auto;padding:0 1rem}
.smal{max-width:44rem}

/* --- kop --- */
/* Op een telefoon breekt het menu naar twee regels; sticky zou dan een derde van
   het scherm opeten. Daar plakt hij dus niet. */
.top{background:#fff;border-bottom:1px solid var(--lijn);z-index:40}
@media(min-width:900px){.top{position:sticky;top:0}}
.top .wrap{display:flex;align-items:center;gap:.75rem;min-height:60px;flex-wrap:wrap}
.merk{display:flex;align-items:center;gap:.5rem;font-weight:700;text-decoration:none;color:var(--inkt);font-size:1.05rem}
.merk span.punt{width:12px;height:20px;border-radius:3px;background:linear-gradient(180deg,var(--groen) 55%,var(--lijn) 55%);display:inline-block}
nav.hoofd{margin-left:auto;display:flex;gap:.15rem;flex-wrap:wrap}
nav.hoofd a{padding:.45rem .6rem;border-radius:9px;text-decoration:none;color:var(--grijs);font-size:.92rem;font-weight:600}
nav.hoofd a:hover,nav.hoofd a[aria-current]{background:var(--groen-licht);color:var(--groen-diep)}

/* --- hero --- */
.hero{background:linear-gradient(170deg,#fff,var(--groen-licht));border-bottom:1px solid var(--lijn);padding:2.2rem 0 2rem}
.hero p.lead{font-size:1.1rem;color:var(--grijs);max-width:40rem}
.kruimels{font-size:.85rem;color:var(--grijs);padding:.7rem 0}
.kruimels a{color:var(--grijs)}

/* --- kaarten --- */
main{padding:1.5rem 0 2.5rem}
.kaart{background:var(--kaart);border:1px solid var(--lijn);border-radius:var(--r);padding:1.1rem;box-shadow:var(--schaduw)}
.rooster{display:grid;gap:1rem;grid-template-columns:1fr}
@media(min-width:640px){.rooster.twee,.rooster.drie{grid-template-columns:1fr 1fr}}
@media(min-width:960px){.rooster.drie{grid-template-columns:repeat(3,1fr)}}
.kaart h3{margin-top:0}
.kaart p:last-child{margin-bottom:0}

/* --- de twee helften van de markt --- */
.spoor{border-radius:var(--r);padding:1.2rem;border:1px solid var(--lijn);background:#fff}
.spoor.plugin{border-top:5px solid var(--groen)}
.spoor.vast{border-top:5px solid var(--blauw)}
.spoor .badge{display:inline-block;font-size:.72rem;font-weight:800;letter-spacing:.06em;
  text-transform:uppercase;padding:.25rem .55rem;border-radius:999px;margin-bottom:.5rem}
.spoor.plugin .badge{background:var(--groen-licht);color:var(--groen-diep)}
.spoor.vast .badge{background:var(--blauw-licht);color:var(--blauw)}

/* --- knoppen --- */
.knop{display:inline-block;padding:.7rem 1.15rem;border-radius:11px;font-weight:700;
  text-decoration:none;border:1px solid transparent;cursor:pointer;font-size:1rem;line-height:1.3}
.knop.primair{background:var(--groen);color:#fff}
.knop.primair:hover{background:var(--groen-diep);color:#fff}
.knop.tweede{background:#fff;border-color:var(--lijn);color:var(--inkt)}
.knop.blauw{background:var(--blauw);color:#fff}
.knop.blauw:hover{background:#143a5c;color:#fff}

/* --- meldingen --- */
.melding{border-radius:var(--r);padding:.9rem 1rem;margin:1.2rem 0;border:1px solid}
.melding.let{background:var(--oker-licht);border-color:#e9c98f}
.melding.nee{background:var(--rood-licht);border-color:#eab3ae}
.melding.ok{background:var(--groen-licht);border-color:#b6d9c3}
.melding p:last-child{margin:0}
.melding strong{display:block;margin-bottom:.2rem}

/* --- tabel --- */
.tabelwrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:1rem 0;
  border:1px solid var(--lijn);border-radius:var(--r);background:#fff}
table{border-collapse:collapse;width:100%;font-size:.92rem;min-width:34rem}
th,td{padding:.6rem .7rem;text-align:left;border-bottom:1px solid var(--lijn);vertical-align:top}
th{background:var(--groen-licht);font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;color:var(--groen-diep)}
tbody tr:last-child td{border-bottom:0}
td.getal,th.getal{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}

/* --- rekentool --- */
/* Mobiel: de UITKOMST staat boven het formulier, en de belangrijkste tegel plakt
   in beeld. Anders moet je op een telefoon langs dertien invoervelden scrollen
   voordat je ziet wat je verandering doet -- dan is de tool niet af. */
.tool{display:flex;flex-direction:column;gap:1rem}
.tool .uitkomst{order:-1}
.tool #tegel-tvt{position:sticky;top:0;z-index:20;transition:background .2s}
@media(min-width:900px){
  .tool{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,20rem);align-items:start}
  .tool .uitkomst{order:0;position:sticky;top:76px}
  .tool #tegel-tvt{position:static}}
.veld{margin-bottom:.9rem}
.veld label{display:block;font-weight:650;font-size:.95rem;margin-bottom:.15rem}
.veld .hint{display:block;font-size:.82rem;color:var(--grijs);margin-bottom:.35rem}
.invoer{display:flex;align-items:stretch;border:1px solid var(--lijn);border-radius:10px;overflow:hidden;background:#fff}
.invoer input{border:0;padding:.6rem .7rem;font-size:1rem;width:100%;min-width:0;font-variant-numeric:tabular-nums}
.invoer input:focus{outline:2px solid var(--groen);outline-offset:-2px}
.invoer .suffix{background:var(--groen-licht);color:var(--groen-diep);padding:.6rem .7rem;font-size:.85rem;
  font-weight:700;white-space:nowrap;display:flex;align-items:center}
input[type=range]{width:100%;accent-color:var(--groen)}
.keuze{display:grid;gap:.5rem;grid-template-columns:1fr}
@media(min-width:520px){.keuze{grid-template-columns:1fr 1fr}}
.keuze label{border:1px solid var(--lijn);border-radius:11px;padding:.65rem .8rem;cursor:pointer;background:#fff;font-weight:600;font-size:.93rem}
.keuze input{margin-right:.4rem;accent-color:var(--groen)}
.keuze label:has(input:checked){border-color:var(--groen);background:var(--groen-licht);box-shadow:inset 0 0 0 1px var(--groen)}
.tegel{background:var(--groen-diep);color:#fff;border-radius:var(--r);padding:1rem;margin-bottom:.7rem}
.tegel .cijfer{font-size:2rem;font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums}
.tegel .label{font-size:.85rem;opacity:.85}
.subtegels{display:grid;gap:.5rem;grid-template-columns:1fr 1fr}
.subtegel{background:#fff;border:1px solid var(--lijn);border-radius:11px;padding:.6rem .7rem}
.subtegel .cijfer{font-weight:750;font-size:1.05rem;font-variant-numeric:tabular-nums}
.subtegel .label{font-size:.78rem;color:var(--grijs)}
.noten li{font-size:.88rem;color:var(--grijs)}
details.aannames{border:1px solid var(--lijn);border-radius:var(--r);background:#fff;padding:.7rem .9rem;margin:1rem 0}
details.aannames summary{cursor:pointer;font-weight:700}
details.aannames[open] summary{margin-bottom:.5rem}

/* --- formulier --- */
form.lead .veld input,form.lead .veld textarea,form.lead .veld select{
  width:100%;border:1px solid var(--lijn);border-radius:10px;padding:.6rem .7rem;font-size:1rem;font-family:inherit;background:#fff}
form.lead textarea{min-height:6.5rem;resize:vertical}
form.lead .veld input:focus,form.lead textarea:focus,form.lead select:focus{outline:2px solid var(--groen);outline-offset:-2px}
.pot{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* --- lege staat --- */
.leeg{border:2px dashed var(--lijn);border-radius:var(--r);padding:2rem 1.2rem;text-align:center;background:#fff}
.leeg .icoon{font-size:2rem;line-height:1}

/* --- bron --- */
.bron{font-size:.83rem;color:var(--grijs)}
.bronnen{list-style:none;padding:0}
.bronnen li{padding:.5rem 0;border-bottom:1px solid var(--lijn);font-size:.88rem}
.bronnen li:last-child{border-bottom:0}
.zeker{display:inline-block;font-size:.7rem;font-weight:800;letter-spacing:.05em;padding:.12rem .4rem;border-radius:5px;margin-right:.4rem;vertical-align:1px}
.zeker.hard{background:var(--groen-licht);color:var(--groen-diep)}
.zeker.zacht{background:var(--oker-licht);color:var(--oker)}

/* --- voet --- */
footer{background:#101a17;color:#c7d3cd;margin-top:2.5rem;padding:2rem 0 1.5rem;font-size:.9rem}
footer a{color:#fff;text-decoration:none}
footer a:hover{text-decoration:underline}
footer h4{color:#fff;margin:0 0 .4rem;font-size:.95rem}
footer ul{list-style:none;padding:0;margin:0}
footer li{padding:.15rem 0}
.wa{display:inline-flex;align-items:center;gap:.45rem;background:#25d366;color:#06251a !important;
  font-weight:750;padding:.55rem .9rem;border-radius:11px;text-decoration:none}
.voetbalk{border-top:1px solid #2a3a34;margin-top:1.4rem;padding-top:1rem;color:#8ea59b;font-size:.82rem}
.overslaan{position:absolute;left:-9999px}
.overslaan:focus{left:1rem;top:.5rem;position:fixed;background:#fff;padding:.5rem .8rem;border-radius:8px;z-index:99}

.product img{width:100%;height:auto;aspect-ratio:16/10;object-fit:contain;background:#fff;border-radius:10px;border:1px solid var(--lijn)}
.product .specs{color:var(--grijs);font-size:.9rem}
.prijs{font-weight:800}.prijs.groot{font-size:1.4rem;margin-top:0}
.prijs .lever{font-weight:500;color:var(--grijs);font-size:.85rem}
.product-kop img{width:100%;height:auto;object-fit:contain;background:#fff;border-radius:var(--r);border:1px solid var(--lijn)}
.product-kop .badge{display:inline-block;font-size:.75rem;font-weight:800;letter-spacing:.04em;text-transform:uppercase;padding:.25rem .55rem;border-radius:999px;background:var(--oker-licht)}