:root { --inkt: #13306b; --tekst: #34425c; --tekst-zacht: #6b7892; --blauw: #2f6fed; --blauw-diep: #1d4fc4; --blauw-licht: #eef3fd; --blauw-rand: #cddcfa; --papier: #f6f8fc; --wit: #ffffff; --markeer: #fff1a8; --groen: #0f8a5f; --groen-licht: #e6f7ef; --lijn: #e3e9f3; --kop-font: "Montserrat", "Segoe UI", system-ui, sans-serif; --tekst-font: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background-color: var(--papier); background-image: radial-gradient(circle, #dbe3f1 1px, transparent 1px); background-size: 22px 22px; color: var(--tekst); font-family: var(--tekst-font); font-size: 1.0625rem; line-height: 1.6; }
img, svg { display: block; max-width: 100%; }
a { color: var(--blauw-diep); }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--blauw-rand); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { margin: 0; color: var(--inkt); font-family: var(--kop-font); line-height: 1.2; }
h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); font-weight: 800; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.2rem); font-weight: 700; letter-spacing: -0.01em; }
h3 { font-size: 1.125rem; font-weight: 700; }
p { margin: 0; }

.pagina { max-width: 1120px; margin: 0 auto; padding: 0 clamp(1rem, 4vw, 2rem); }

.kop { border-bottom: 1px solid var(--lijn); background: rgba(246, 248, 252, 0.9); backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 30; }
.kop-binnen { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; max-width: 1120px; margin: 0 auto; padding: 1rem clamp(1rem, 4vw, 2rem); }
.merk { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--inkt); font-family: var(--kop-font); font-size: 1.25rem; font-weight: 800; text-decoration: none; }
.kop .mod-menu { display: flex; flex-wrap: wrap; align-items: center; gap: 0.35rem 1.25rem; margin: 0; padding: 0; list-style: none; font-weight: 600; font-size: 0.95rem; }
.kop .mod-menu .nav-item { margin: 0; }
.kop .mod-menu a { color: var(--tekst); text-decoration: none; }
.kop .mod-menu a:hover { color: var(--blauw); }
.kop .mod-menu .knop-inloggen a { display: inline-flex; align-items: center; justify-content: center; padding: 0.45rem 1rem; border: 1px solid var(--blauw-rand); border-radius: 10px; background: var(--wit); color: var(--blauw-diep); font-family: var(--kop-font); font-weight: 700; transition: background-color 0.15s ease; }
.kop .mod-menu .knop-inloggen a:hover { background: var(--blauw-licht); }
.kop .mod-menu a.knop { color: var(--blauw-diep); }

.merk { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--inkt); font-family: var(--kop-font); font-size: 1.25rem; font-weight: 800; text-decoration: none; }
.merk-icoon { display: grid; place-items: center; width: 2.4rem; height: 2.4rem; border-radius: 10px; background: linear-gradient(135deg, #3aa0e8, var(--blauw)); }
.merk-icoon svg { width: 1.4rem; height: 1.4rem; fill: var(--wit); }
.kop-navigatie { display: flex; flex-wrap: wrap; align-items: center; gap: 0.35rem 1.25rem; font-weight: 600; font-size: 0.95rem; }
.kop-navigatie a:not(.knop) { color: var(--tekst); text-decoration: none; }
.kop-navigatie a:not(.knop):hover { color: var(--blauw); }

.knop { display: inline-flex; align-items: center; justify-content: center; padding: 0.7rem 1.3rem; border: 1px solid transparent; border-radius: 10px; font-family: var(--kop-font); font-size: 0.95rem; font-weight: 700; text-decoration: none; cursor: pointer; transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease; }
.knop-primair { background: var(--blauw); color: var(--wit); }
.knop-primair:hover { background: var(--blauw-diep); }
.knop-licht { padding: 0.45rem 1rem; border-color: var(--blauw-rand); background: var(--wit); color: var(--blauw-diep); }
.knop-licht:hover { background: var(--blauw-licht); }
.knop-tekst { padding-inline: 0.4rem; color: var(--blauw-diep); }
.knop-tekst:hover { text-decoration: underline; }

.held { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); align-items: center; gap: clamp(2rem, 5vw, 4rem); padding: clamp(2rem, 6vw, 4.5rem) 0 clamp(3rem, 7vw, 5.5rem); }
.held-tekst { display: grid; gap: 1.4rem; max-width: 34rem; }
.held-intro { font-size: 1.15rem; max-width: 32rem; }
.held-acties { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem 1rem; }

.held-voorbeeld { display: grid; gap: 1rem; padding: 1.4rem; border: 1px solid var(--lijn); border-radius: 20px; background: var(--wit); box-shadow: 0 24px 60px -30px rgba(19, 48, 107, 0.35); transform: rotate(-1deg); }
.voorbeeld-kop { display: grid; gap: 0.15rem; padding-bottom: 0.8rem; border-bottom: 2px solid transparent; border-image: linear-gradient(90deg, var(--blauw), #3aa0e8, transparent) 1; }
.voorbeeld-titel { color: var(--inkt); font-family: var(--kop-font); font-size: 1.15rem; font-weight: 800; }
.voorbeeld-meta { color: var(--tekst-zacht); font-size: 0.85rem; }
.voorbeeld-paginas { display: flex; gap: 0.45rem; overflow: hidden; }
.boekpagina { position: relative; display: flex; align-items: flex-end; justify-content: flex-end; flex: 0 0 auto; width: 3rem; height: 3.9rem; padding: 0.2rem; border-radius: 4px; background-color: #faf6ec; background-image: linear-gradient(#e27a4a 0 5px, transparent 5px), repeating-linear-gradient(transparent 0 7px, #d9d3c3 7px 8px); background-position: 0 0, 5px 10px; background-size: 100% 100%, 70% 70%; background-repeat: no-repeat, no-repeat; box-shadow: 0 2px 6px rgba(0, 0, 0, 0.18); font-size: 0.62rem; font-weight: 700; line-height: 1; }
.boekpagina span { padding: 0.12rem 0.25rem; border-radius: 3px; background: rgba(19, 48, 107, 0.85); color: var(--wit); }
.voorbeeld-tabs { display: flex; flex-wrap: wrap; gap: 0.25rem 1.1rem; border-bottom: 1px solid var(--lijn); font-family: var(--kop-font); font-size: 0.8rem; font-weight: 600; color: var(--tekst-zacht); }
.voorbeeld-tabs span { padding: 0.35rem 0; }
.voorbeeld-tabs .is-actief { color: var(--blauw); box-shadow: inset 0 -2px 0 var(--blauw); }
.voorbeeld-inhoud { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 170px), 1fr)); align-items: center; gap: 1.2rem; }
.voorbeeld-samenvatting { display: grid; gap: 0.35rem; font-size: 0.82rem; line-height: 1.5; }
.voorbeeld-samenvatting strong { color: var(--inkt); font-family: var(--kop-font); font-size: 0.85rem; }
.voorbeeld-samenvatting strong:not(:first-child) { margin-top: 0.5rem; }
.voorbeeld-samenvatting em { margin-left: 0.3rem; color: var(--tekst-zacht); font-style: normal; font-weight: 500; }
.voorbeeld-samenvatting mark { padding: 0 0.15em; border-radius: 3px; background: var(--markeer); color: inherit; }
.voorbeeld-cijfer { position: relative; display: grid; place-items: center; justify-self: center; width: 9.5rem; height: 9.5rem; margin-bottom: 1.4rem; }
.voorbeeld-cijfer svg { position: absolute; inset: 0; width: 100%; height: 100%; transform: rotate(-90deg); }
.ring-spoor { fill: none; stroke: var(--blauw-licht); stroke-width: 9; }
.ring-voortgang { fill: none; stroke: var(--blauw); stroke-width: 9; stroke-linecap: round; stroke-dasharray: 326.7; stroke-dashoffset: 326.7; animation: ring-vullen 1.6s cubic-bezier(0.22, 1, 0.36, 1) 0.4s forwards; }
.cijfer { position: relative; color: var(--blauw-diep); font-family: var(--kop-font); font-size: 2.6rem; font-weight: 800; letter-spacing: -0.02em; }
.cijfer-label { position: absolute; bottom: -1.4rem; color: var(--tekst-zacht); font-size: 0.8rem; white-space: nowrap; }
@keyframes ring-vullen { to { stroke-dashoffset: 84.9; } }

.blok { display: grid; gap: 2rem; padding: clamp(2.5rem, 6vw, 4.5rem) 0; border-top: 1px solid var(--lijn); }

.stappen { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: 2rem; margin: 0; padding: 0; list-style: none; counter-reset: stap; }
.stappen li { position: relative; display: grid; gap: 0.5rem; padding-top: 3.6rem; counter-increment: stap; }
.stappen li::before { content: counter(stap); position: absolute; top: 0; left: 0; display: grid; place-items: center; width: 2.6rem; height: 2.6rem; border: 2px solid var(--blauw); border-radius: 50%; color: var(--blauw-diep); font-family: var(--kop-font); font-weight: 800; }
.stappen li:not(:last-child)::after { content: ""; position: absolute; top: 1.3rem; left: 3.4rem; right: -1.2rem; border-top: 2px dashed var(--blauw-rand); }

.functies { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); gap: 0; border-top: 1px solid var(--lijn); }
.functie { display: grid; align-content: start; gap: 0.4rem; padding: 1.5rem 1.5rem 1.5rem 0; border-bottom: 1px solid var(--lijn); }
.functie h3::before { content: ""; display: inline-block; width: 0.55rem; height: 0.55rem; margin-right: 0.55rem; border-radius: 2px; background: var(--blauw); vertical-align: 0.12em; }

.chat-uitgelicht { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr)); align-items: center; gap: 2rem; margin-top: 1rem; padding: clamp(1.5rem, 4vw, 2.5rem); border-radius: 20px; background: var(--inkt); color: #d5def0; }
.chat-uitgelicht h3 { color: var(--wit); font-size: 1.5rem; }
.chat-tekst { display: grid; gap: 0.75rem; }
.chat-voorbeeld { display: grid; gap: 0.75rem; }
.bericht { max-width: 88%; padding: 0.75rem 1rem; border-radius: 16px; font-size: 0.95rem; line-height: 1.5; }
.bericht-leerling { justify-self: end; border-bottom-right-radius: 4px; background: var(--blauw); color: var(--wit); }
.bericht-studiehulp { justify-self: start; border-bottom-left-radius: 4px; background: var(--wit); color: var(--tekst); }

.blok-gedeeld { grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr)); align-items: center; }
.gedeeld-tekst { display: grid; gap: 1rem; }
.privacy-lijst { display: grid; gap: 1rem; margin: 0; padding: 0; list-style: none; }
.privacy-lijst li { padding: 1.1rem 1.25rem; border-left: 4px solid var(--groen); border-radius: 0 12px 12px 0; background: var(--groen-licht); }
.privacy-lijst strong { display: block; color: var(--inkt); font-family: var(--kop-font); }

.blok-credits { grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr)); align-items: center; }
.credits-tekst { display: grid; gap: 1rem; }
.credits-kaart { display: grid; gap: 1rem; justify-self: center; width: min(100%, 320px); padding: 1.75rem; border: 1px solid var(--lijn); border-radius: 18px; background: var(--wit); text-align: center; }
.credits-saldo { display: grid; }
.credits-saldo span { color: var(--tekst-zacht); font-size: 0.9rem; }
.credits-saldo strong { color: var(--blauw-diep); font-family: var(--kop-font); font-size: 3rem; font-weight: 800; line-height: 1.1; }
.credits-noot { color: var(--tekst-zacht); font-size: 0.85rem; }

.faq { display: grid; max-width: 46rem; border-top: 1px solid var(--lijn); }
.faq details { border-bottom: 1px solid var(--lijn); }
.faq summary { position: relative; padding: 1.1rem 2.5rem 1.1rem 0; color: var(--inkt); font-family: var(--kop-font); font-weight: 600; list-style: none; cursor: pointer; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; top: 50%; right: 0.25rem; color: var(--blauw); font-size: 1.5rem; line-height: 1; transform: translateY(-50%); transition: transform 0.2s ease; }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { padding: 0 2.5rem 1.2rem 0; }

.afsluiter { display: grid; justify-items: center; gap: 1rem; margin: clamp(1rem, 4vw, 2rem) 0 clamp(2.5rem, 6vw, 4rem); padding: clamp(2.5rem, 6vw, 4rem) 1.5rem; border-radius: 24px; background: linear-gradient(135deg, var(--blauw), #3aa0e8); color: #eaf1ff; text-align: center; }
.afsluiter h2 { color: var(--wit); }
.afsluiter .knop-primair { margin-top: 0.5rem; background: var(--wit); color: var(--blauw-diep); }
.afsluiter .knop-primair:hover { background: var(--blauw-licht); }

.voet { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.75rem 0 2.5rem; border-top: 1px solid var(--lijn); color: var(--tekst-zacht); font-size: 0.9rem; }
.voet-navigatie { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.voet a { color: var(--tekst-zacht); }
.voet a:hover { color: var(--blauw); }

.installeren-tekst { display: grid; gap: 1rem; max-width: 40rem; }
.installeren-platformen { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 1rem; }
.platform { display: grid; align-content: start; gap: 0.5rem; padding: 1.25rem 1.4rem; border: 1px solid var(--lijn); border-radius: 14px; background: var(--wit); }
.platform strong { color: var(--inkt); }

.studiehulp-dialoog { width: min(100% - 2rem, 46rem); max-height: min(100dvh - 2rem, 50rem); padding: 0; border: 0; border-radius: 18px; background: var(--wit); color: var(--tekst); box-shadow: 0 30px 80px -20px rgba(19, 48, 107, 0.45); overflow: hidden; }
.studiehulp-dialoog[open] { display: flex; flex-direction: column; animation: dialoog-openen 0.2s ease-out; }
.studiehulp-dialoog::backdrop { background: rgba(19, 48, 107, 0.45); backdrop-filter: blur(3px); }
.dialoog-sluiten { position: absolute; top: 0.75rem; right: 0.75rem; display: grid; place-items: center; width: 2.25rem; height: 2.25rem; border: 1px solid var(--lijn); border-radius: 50%; background: var(--wit); color: var(--inkt); font-size: 1.4rem; line-height: 1; cursor: pointer; }
.dialoog-sluiten:hover { background: var(--blauw-licht); border-color: var(--blauw-rand); }
.dialoog-inhoud { overflow-y: auto; padding: 2rem clamp(1.25rem, 4vw, 2.5rem); line-height: 1.65; }
.dialoog-inhoud h1 { margin: 0 2.5rem 0.5rem 0; font-size: 1.6rem; }
.dialoog-inhoud h2 { margin: 1.75rem 0 0.5rem; font-size: 1.15rem; }
.dialoog-inhoud p, .dialoog-inhoud ul { margin: 0 0 0.75rem; }
.dialoog-inhoud ul { padding-left: 1.25rem; }
@keyframes dialoog-openen { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }


.contact-section { padding: clamp(1.5rem, 4vw, 3rem) 0; }
.contact-inner { display: grid; gap: 2rem; max-width: 46rem; margin: 0 auto; padding: 0 clamp(1rem, 4vw, 2rem); }
.contact-copy { display: grid; gap: 0.75rem; }
.contact-eyebrow { color: #2f6fed; font-size: 0.85rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.contact-copy h2 { margin: 0; color: #13306b; font-size: clamp(1.6rem, 3.4vw, 2.2rem); line-height: 1.2; }
.contact-copy p { margin: 0; color: #34425c; }
.contact-message { display: none; padding: 0.9rem 1.1rem; border-radius: 12px; }
.contact-message.is-visible { display: block; }
.contact-message--success { border: 1px solid #b7e4cd; background: #e6f7ef; color: #0f8a5f; }
.contact-message--error { border: 1px solid #f5c2c4; background: #fdecec; color: #b42318; }
.contact-form { display: grid; gap: 1.5rem; padding: clamp(1.25rem, 3vw, 2rem); border: 1px solid #e3e9f3; border-radius: 18px; background: #fff; box-shadow: 0 20px 50px -30px rgba(19, 48, 107, 0.4); }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 1.1rem; }
.form-field { display: grid; align-content: start; gap: 0.4rem; }
.form-field--full { grid-column: 1 / -1; }
.form-field label { color: #13306b; font-weight: 600; }
.form-field label.keuze { font-weight: 500; color: #34425c; }
.form-field input[type="text"], .form-field input[type="email"], .form-field input[type="tel"], .form-field input[type="search"], .form-field textarea { width: 100%; padding: 0.7rem 0.9rem; border: 1px solid #dfe6f1; border-radius: 10px; background: #fff; color: #34425c; font: inherit; line-height: 1.4; }
.form-field input::placeholder, .form-field textarea::placeholder { color: #9aa6ba; }
.form-field input:focus, .form-field textarea:focus { outline: none; border-color: #2f6fed; box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.18); }
.form-field textarea { resize: vertical; min-height: 7rem; }
.required { color: #b42318; }
.form-actions { display: flex; justify-content: flex-end; }
.contact-submit { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.8rem 1.6rem; border: 0; border-radius: 10px; background: #2f6fed; color: #fff; font: inherit; font-weight: 700; cursor: pointer; transition: background-color 0.15s ease; }
.contact-submit:hover { background: #1d4fc4; }
.contact-submit:disabled { opacity: 0.6; cursor: default; }
.submit-spinner { width: 1rem; height: 1rem; border: 2px solid rgba(255, 255, 255, 0.4); border-top-color: #fff; border-radius: 50%; animation: submit-draaien 0.8s linear infinite; }
@keyframes submit-draaien { to { transform: rotate(360deg); } }
.form-label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #13306b; }
.keuze-groep { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.keuze { display: inline-flex; align-items: flex-start; gap: 0.5rem; padding: 0.6rem 0.9rem; border: 1px solid #dfe6f1; border-radius: 10px; background: #fff; cursor: pointer; line-height: 1.4; }
.keuze:hover { border-color: #a9c3f6; background: #f8faff; }
.keuze input { margin: 0.2rem 0 0; accent-color: #2f6fed; flex: 0 0 auto; }
.keuze:has(input:checked) { border-color: #2f6fed; background: #eef3fd; }
.keuze:has(input:focus-visible) { outline: 2px solid #2f6fed; outline-offset: 2px; }
.keuze a { color: #1d4fc4; }
.veld-uitleg { margin: 0.4rem 0 0; color: #6b7892; font-size: 0.85rem; }
.schoolzoeker { position: relative; }
.schoolzoeker input[type="search"] { width: 100%; }
.schoolresultaten { position: absolute; z-index: 20; left: 0; right: 0; max-height: 16rem; margin: 0.25rem 0 0; padding: 0; overflow-y: auto; list-style: none; border: 1px solid #dfe6f1; border-radius: 10px; background: #fff; box-shadow: 0 12px 30px -12px rgba(19, 48, 107, 0.35); }
.schoolresultaten li { border-bottom: 1px solid #f0f4fa; }
.schoolresultaten li:last-child { border-bottom: 0; }
.schoolresultaten button { display: block; width: 100%; padding: 0.6rem 0.9rem; border: 0; background: none; color: #34425c; font: inherit; text-align: left; line-height: 1.4; cursor: pointer; }
.schoolresultaten button:hover { background: #eef3fd; color: #1d4fc4; }
.schoolresultaten .geen-resultaat { padding: 0.6rem 0.9rem; color: #6b7892; }
.contact-form select { width: 100%; padding: 0.7rem 0.9rem; border: 1px solid #dfe6f1; border-radius: 10px; background-color: #fff; color: #34425c; font: inherit; line-height: 1.3; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%235b6b82'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.6rem center; background-size: 1.4rem; padding-right: 2.4rem; }
.contact-form select:focus { outline: none; border-color: #2f6fed; box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.18); }
.contact-form [hidden] { display: none; }