/* Betonofferte – klantformulier */
:root {
    --of-rood: #c8102e;
    --of-rood-donker: #a00d25;
    --of-geel: #ffd100;
    --of-geel-licht: #fff8d6;
    --of-tekst: #2b2b2b;
    --of-grijs: #6b6b6b;
    --of-lijn: #d9d9d9;
    --of-veld: #faf7ef;
    --of-bg: #f6f6f6;
    --of-groen: #2e7d32;
    --of-radius: 8px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    background: var(--of-bg);
    color: var(--of-tekst);
    font: 17px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
.of-wrap { max-width: 640px; margin: 0 auto; padding: 24px 16px 40px; }
[hidden] { display: none !important; }

/* Tabs */
.of-tabs { display: flex; gap: 4px; }
.of-tabs button {
    font: inherit; font-size: 18px; font-weight: 600;
    border: 1px solid var(--of-lijn); border-bottom: 0;
    background: #eaeaea; color: var(--of-tekst);
    padding: 8px 20px; border-radius: var(--of-radius) var(--of-radius) 0 0; cursor: pointer;
}
.of-tabs button.actief { background: var(--of-rood); border-color: var(--of-rood); color: #fff; }
.of-tabs + .of-kaart, .of-tabs ~ .of-kaart { border-top-left-radius: 0; }

/* Kaart */
.of-kaart {
    background: #fff; border: 1px solid var(--of-lijn);
    border-radius: var(--of-radius); padding: 22px 22px 26px;
    box-shadow: 0 2px 10px rgba(0,0,0,.04);
}
h1, h2 { color: var(--of-rood); margin: 0 0 16px; line-height: 1.25; }
h1 { font-size: 24px; } h2 { font-size: 21px; }

/* Velden */
.of-veld { display: flex; flex-direction: column; flex: 1 1 200px; min-width: 0; margin-bottom: 14px; }
.of-veld-smal { flex: 0 1 190px; }
.of-veld label, .of-groep legend { font-weight: 600; font-size: 15px; margin-bottom: 5px; padding: 0; }
.of-rij { display: flex; gap: 14px; flex-wrap: wrap; }
.of-rij-onder { align-items: flex-end; }
input[type=text], input[type=tel], input[type=email], input[type=number], input[type=date], select, textarea {
    font: inherit; width: 100%;
    padding: 10px 12px; border: 2px solid var(--of-lijn); border-radius: 6px;
    background: var(--of-veld); color: var(--of-tekst);
    transition: border-color .15s;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--of-rood); background: #fff; }
input:disabled { opacity: .5; }
input.of-ongeldig { border-color: var(--of-rood); }
.of-invoer-eenheid { display: flex; align-items: center; gap: 8px; }
.of-invoer-eenheid span { font-weight: 600; }
.of-volume { padding: 10px 0; }

/* Keuzekaartjes (checkbox / radio) */
.of-groep { border: 0; padding: 0; margin: 4px 0 16px; min-width: 0; }
.of-keuzes { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 8px; }
.of-keuzes-2 { grid-template-columns: repeat(2, 1fr); }
.of-keuze { position: relative; display: block; cursor: pointer; user-select: none; }
.of-keuze input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.of-keuze span {
    display: flex; align-items: center; gap: 10px; min-height: 50px;
    padding: 10px 12px; border: 2px solid var(--of-lijn); border-radius: 6px;
    background: var(--of-veld); font-size: 16px; line-height: 1.25;
    transition: border-color .15s, background .15s;
}
.of-keuze span::before {
    content: ""; flex: 0 0 22px; height: 22px; border: 2px solid #9a9a9a; background: #fff; border-radius: 4px;
    display: flex; align-items: center; justify-content: center; font-size: 15px; color: var(--of-rood); font-weight: 700;
}
.of-keuze input[type=radio] + span::before { border-radius: 50%; }
.of-keuze input:checked + span { border-color: var(--of-rood); background: var(--of-geel-licht); }
.of-keuze input:checked + span::before { content: "✔"; border-color: var(--of-rood); background: var(--of-geel); }
.of-keuze input[type=radio]:checked + span::before { content: ""; box-shadow: inset 0 0 0 4px var(--of-geel); background: var(--of-rood); }
.of-keuze input:focus-visible + span { outline: 3px solid rgba(200,16,46,.35); outline-offset: 1px; }
.of-keuze input:disabled + span { cursor: not-allowed; opacity: .75; }
.of-keuze-inline { margin-bottom: 14px; }
.of-keuze-inline span { min-height: 48px; }

/* Prijs */
.of-prijs { margin: 8px 0 4px; padding: 14px 16px; border-radius: var(--of-radius); background: #fafafa; border: 1px solid var(--of-lijn); }
.of-prijs-kop { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.of-prijs-kop span { font-weight: 600; }
.of-prijs-kop strong { font-size: 26px; color: var(--of-rood); white-space: nowrap; }
.of-prijs-sub { color: var(--of-grijs); font-size: 14px; text-align: right; }
.of-prijs.laden .of-prijs-kop strong { opacity: .45; }
.of-prijs.op-maat .of-prijs-kop strong { font-size: 18px; white-space: normal; text-align: right; }
.of-prijs details { margin-top: 10px; font-size: 14px; }
.of-prijs summary { cursor: pointer; color: var(--of-grijs); }
.of-prijs table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.of-prijs td { padding: 5px 0; border-bottom: 1px solid #eee; vertical-align: top; }
.of-prijs td:last-child { text-align: right; white-space: nowrap; padding-left: 12px; }
.of-prijs tr.totaal td { font-weight: 700; border-bottom: 0; }

/* Knoppen */
.of-acties { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.of-knop {
    font: inherit; font-weight: 600; font-size: 18px;
    background: var(--of-rood); color: #fff; border: 0; border-radius: 6px;
    padding: 14px 28px; cursor: pointer; text-decoration: none; display: inline-block;
}
.of-knop:hover { background: var(--of-rood-donker); }
.of-knop:disabled { opacity: .6; cursor: wait; }
.of-knop-licht { background: #e6e6e6; color: var(--of-tekst); }
.of-knop-licht:hover { background: #d6d6d6; }
.of-knop-groen { background: var(--of-groen); } .of-knop-groen:hover { background: #1b5e20; }
.of-knop-rood { background: #c62828; }

/* Meldingen */
.of-melding { border-left: 4px solid var(--of-rood); background: #fff4f4; padding: 14px 16px; border-radius: 6px; margin-bottom: 16px; font-weight: 600; }
.of-melding .of-tekst { color: #9b1c1c; margin-bottom: 12px; }
.of-fouten { background: #fff4f4; border: 1px solid #f1b8b8; color: #9b1c1c; border-radius: 6px; padding: 10px 14px; margin-top: 8px; font-size: 15px; }
.of-fouten ul { margin: 0; padding-left: 18px; }
.of-resultaat { font-size: 18px; font-weight: 600; color: var(--of-groen); padding: 10px 0; }
.of-bezig { text-align: center; padding: 36px 10px; font-weight: 600; }
.of-spinner { display: block; width: 38px; height: 38px; margin: 0 auto 14px; border: 4px solid #eee; border-top-color: var(--of-rood); border-radius: 50%; animation: of-draai 0.9s linear infinite; }
@keyframes of-draai { to { transform: rotate(360deg); } }
.of-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.of-verborgen { position: absolute; left: -9999px; }

/* Akkoord-pagina */
.of-bevestiging { text-align: center; }
.of-logo { max-width: 260px; width: 70%; height: auto; margin: 4px auto 18px; display: block; }
.of-samenvatting { text-align: left; display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 18px 0 22px; padding: 14px 16px; background: #fafafa; border-radius: 6px; }
.of-samenvatting dt { color: var(--of-grijs); } .of-samenvatting dd { margin: 0; }
.of-klein { font-size: 14px; color: var(--of-grijs); margin-top: 18px; }
.of-klein a { color: var(--of-rood); }
.of-tekst { font-size: 18px; }
.of-akkoord { color: var(--of-groen); font-weight: 600; }
.of-reden { text-align: left; }
.of-reden textarea { margin: 10px 0 14px; }

@media (max-width: 520px) {
    body { font-size: 16px; }
    .of-wrap { padding: 12px 10px 30px; }
    .of-kaart { padding: 16px 14px 20px; }
    .of-veld-smal { flex: 1 1 140px; }
    .of-keuzes { grid-template-columns: 1fr 1fr; }
    .of-keuze span { font-size: 15px; }
    .of-knop { width: 100%; text-align: center; }
    .of-prijs-kop strong { font-size: 22px; }
}