:root {
    --donkerblauw: #16304B;
    --turquoise: #27B7C5;
    --groen: #8EB11C;
    --oranje: #F08B24;
    --paars: #6A0DAD;
    --lichtblauw: #E7F1F5;
    --donkergrijs: #4B6572;
    --wit: #FFFFFF;

    --lichtgrijs: #F6F8F9;
    --randkleur: #DCE5E9;
    --schaduw: 0 8px 24px rgba(22, 48, 75, 0.08);

    --max-breedte: 1180px;
    --content-breedte: 920px;
}


/* =========================
   BASIS
   ========================= */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding-bottom: 55px;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--donkergrijs);
    background: var(--wit);
    line-height: 1.65;
}

img {
    max-width: 100%;
    height: auto;
}

a {
    color: var(--turquoise);
}

a:hover {
    text-decoration: none;
}


/* =========================
   HEADER
   ========================= */

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;

    background: var(--wit);
    border-bottom: 1px solid var(--randkleur);
    box-shadow: 0 2px 10px rgba(22, 48, 75, 0.05);
}

.header-inner {
    max-width: var(--max-breedte);
    margin: 0 auto;
    padding: 14px 24px;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 36px;
}

.logo-link {
    display: block;
    flex-shrink: 0;
}

.site-logo {
    display: block;
    width: auto;
    height: auto;
    max-height: 100px;
}


/* =========================
   NAVIGATIE
   ========================= */

.main-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 24px;
    flex-wrap: wrap;
}

.main-nav a {
    color: var(--donkerblauw);
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.3;
    padding: 8px 0;

    border-bottom: 3px solid transparent;

    transition:
        color 0.2s ease,
        border-color 0.2s ease;
}

.main-nav a:hover {
    color: var(--turquoise);
    border-bottom-color: var(--turquoise);
}

.menu-toggle {
    display: none;
    border: 0;
    background: transparent;
    color: var(--donkerblauw);
    font-size: 32px;
    cursor: pointer;
    padding: 6px 10px;
}


/* =========================
   PAGINA-INHOUD
   ========================= */

.page-content {
    max-width: var(--content-breedte);
    margin: 0 auto;
    padding: 64px 24px 80px;
}

.page-content-wide {
    max-width: var(--max-breedte);
    margin: 0 auto;
    padding: 64px 24px 80px;
}


/* =========================
   KOPPEN
   ========================= */

h1,
h2,
h3,
h4 {
    color: var(--donkerblauw);
    font-weight: 700;
}

h1 {
    margin-top: 0;
    margin-bottom: 28px;
    font-size: 44px;
    line-height: 1.15;
}

h2 {
    margin-top: 52px;
    margin-bottom: 18px;
    font-size: 31px;
    line-height: 1.2;
}

h3 {
    margin-top: 36px;
    margin-bottom: 14px;
    font-size: 23px;
    line-height: 1.25;
}

h4 {
    margin-top: 28px;
    margin-bottom: 12px;
    font-size: 19px;
}


/* =========================
   TEKST
   ========================= */

p {
    margin-top: 0;
    margin-bottom: 22px;
    font-size: 18px;
}

.lead {
    font-size: 22px;
    line-height: 1.6;
    color: var(--donkerblauw);
}

.small-text {
    font-size: 15px;
    color: var(--donkergrijs);
}


/* =========================
   LIJSTEN
   ========================= */

ul,
ol {
    margin-top: 0;
    margin-bottom: 24px;
    padding-left: 26px;
}

li {
    margin-bottom: 8px;
    font-size: 18px;
}

li::marker {
    color: var(--turquoise);
}


/* =========================
   KNOPPEN
   ========================= */

.button {
    display: inline-block;
    padding: 13px 22px;
    border-radius: 8px;

    background: var(--donkerblauw);
    color: var(--wit) !important;

    text-decoration: none;
    font-weight: 700;

    transition:
        transform 0.15s ease,
        background 0.2s ease;
}

.button:hover {
    background: var(--turquoise);
    transform: translateY(-1px);
}

.button-secondary {
    background: var(--turquoise);
}

.button-secondary:hover {
    background: var(--donkerblauw);
}

.button-accent {
    background: var(--oranje);
}

.button-accent:hover {
    background: var(--donkerblauw);
}


/* =========================
   AFBEELDINGEN
   ========================= */

.page-image {
    display: block;
    width: 100%;
    max-width: 900px;

    margin: 36px auto;
    border-radius: 14px;
}

.image-small {
    max-width: 520px;
}

.image-medium {
    max-width: 720px;
}

.image-large {
    max-width: 1000px;
}


/* =========================
   BLOKKEN
   ========================= */

.content-block {
    margin: 36px 0;
    padding: 28px 32px;

    background: var(--lichtblauw);
    border-radius: 14px;
}

.content-block h2,
.content-block h3 {
    margin-top: 0;
}

.accent-block {
    margin: 42px 0;
    padding: 28px 32px;

    background: #F8FCFD;
    border-left: 5px solid var(--turquoise);
    border-radius: 10px;

    box-shadow: 0 8px 24px rgba(22, 48, 75, 0.06);
}

.accent-block p {
    margin: 0;
}

.green-block {
    border-left-color: var(--groen);
}

.orange-block {
    border-left-color: var(--oranje);
}

.purple-block {
    border-left-color: var(--paars);
}


/* =========================
   CARDS
   ========================= */

.cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
    margin: 36px 0;
}

.card {
    display: block;

    background: var(--wit);
    border: 1px solid var(--randkleur);
    border-radius: 16px;
    padding: 30px 26px;

    color: inherit;
    text-decoration: none;

    box-shadow: var(--schaduw);

    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease,
        border-color 0.2s ease;
}

.card:hover {
    transform: translateY(-3px);
    border-color: var(--turquoise);
    box-shadow: 0 12px 30px rgba(22, 48, 75, 0.12);
}

.card h2,
.card h3 {
    margin-top: 0;
}

.card p:last-child {
    margin-bottom: 0;
}

.card-link {
    display: inline-block;
    margin-top: 10px;
    color: var(--turquoise);
    font-weight: 700;
}


/* =========================
   KLEURACCENTEN
   ========================= */

.text-turquoise {
    color: var(--turquoise);
}

.text-green {
    color: var(--groen);
}

.text-orange {
    color: var(--oranje);
}

.text-purple {
    color: var(--paars);
}

.highlight-line {
    width: 210px;
    height: 6px;
    margin: 0 0 28px;

    background: linear-gradient(
        to right,
        var(--turquoise),
        var(--groen),
        var(--oranje)
    );

    border-radius: 999px;
}


/* =========================
   HERO INHOUDSPAGINA'S
   ========================= */

.page-hero {
    background: var(--lichtblauw);
    border-bottom: 1px solid var(--randkleur);
}

.page-hero-inner {
    max-width: var(--content-breedte);
    margin: 0 auto;
    padding: 30px 24px 24px;
}

.page-hero h1 {
    margin-bottom: 20px;
}

.page-hero .lead {
    margin-bottom: 0;
    max-width: 820px;
}


/* =========================
   SLOGAN / ACCENT
   ========================= */

.accent-slogan {
    margin-top: 22px !important;
    margin-bottom: 0 !important;

    color: var(--donkerblauw);
    font-size: 20px;
    font-weight: 700;
}

.accent-line {
    width: 90px;
    height: 4px;
    margin-top: 16px;

    background: linear-gradient(
        to right,
        var(--turquoise),
        var(--groen),
        var(--oranje)
    );

    border-radius: 999px;
}


/* =========================
   HOMEPAGE
   ========================= */

.home-hero {
    background:
        linear-gradient(
            135deg,
            var(--lichtblauw) 0%,
            #FFFFFF 75%
        );

    border-bottom: 1px solid var(--randkleur);
}

.home-hero-inner {
    max-width: var(--max-breedte);
    margin: 0 auto;
    padding: 58px 24px 54px;
}

.home-hero h1 {
    margin-top: 0;
    margin-bottom: 20px;

    color: var(--donkerblauw);
    font-size: 52px;
    line-height: 1.1;
}

.home-hero .lead {
    max-width: 850px;
    margin-bottom: 28px;
}

.home-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.home-intro {
    max-width: 800px;
    margin-bottom: 32px;
}

.home-intro h2 {
    margin-top: 0;
}

.home-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.external-links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    margin-top: 64px;
}

.external-card {
    padding: 32px;

    background: var(--lichtblauw);
    border-radius: 16px;
    border: 1px solid var(--randkleur);
}

.external-card h2 {
    margin-top: 0;
}


/* =========================
   FOOTER
   ========================= */

.site-footer {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    z-index: 900;

    background: var(--lichtblauw);
    border-top: 1px solid var(--randkleur);
}

.footer-inner {
    max-width: var(--max-breedte);
    margin: 0 auto;
    padding: 14px 24px;

    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-inner p {
    margin: 0;
    font-size: 15px;
    color: var(--donkergrijs);
}

.footer-inner a {
    color: var(--donkerblauw);
    text-decoration: none;
    font-weight: 600;
}

.footer-inner a:hover {
    color: var(--turquoise);
}


/* =========================
   TABLET
   ========================= */

@media (max-width: 950px) {

    .header-inner {
        gap: 20px;
    }

    .main-nav {
        gap: 12px 18px;
    }

    .cards,
    .home-cards {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .external-links {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 38px;
    }

    .home-hero h1 {
        font-size: 44px;
    }
}


/* =========================
   TELEFOON
   ========================= */

@media (max-width: 650px) {

    /* HEADER */

    .header-inner {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: 10px;
        padding: 8px 16px;
    }

    .site-logo {
        max-height: 72px;
    }

    .menu-toggle {
        display: block;
        flex-shrink: 0;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;

        width: 100%;
        padding: 5px 18px 12px;

        background: var(--wit);
        border-top: 1px solid var(--randkleur);
        border-bottom: 1px solid var(--randkleur);

        box-shadow: 0 8px 18px rgba(22, 48, 75, 0.10);
    }

    .main-nav.open {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .main-nav a {
        display: block;
        width: 100%;
        padding: 11px 0;
        border-bottom: 1px solid var(--randkleur);
    }

    .main-nav a:last-child {
        border-bottom: 0;
    }

    /* PAGINA-INHOUD */

    .page-content,
    .page-content-wide {
        padding: 34px 18px 56px;
    }

    .page-hero-inner {
        padding: 22px 18px 18px;
    }

    h1,
    .page-hero h1 {
        font-size: 32px;
    }

    h2 {
        margin-top: 40px;
        font-size: 26px;
    }

    h3 {
        font-size: 21px;
    }

    p,
    li {
        font-size: 17px;
    }

    .lead {
        font-size: 20px;
    }

    /* CARDS */

    .cards,
    .home-cards,
    .external-links {
        grid-template-columns: 1fr;
    }

    .card {
        padding: 24px 20px;
    }

    .content-block,
    .accent-block {
        padding: 22px 20px;
    }

    /* HOMEPAGE */

    .home-hero-inner {
        padding: 32px 18px 30px;
    }

    .home-hero h1 {
        font-size: 36px;
    }

    .home-actions {
        flex-direction: column;
        align-items: flex-start;
    }

    .external-card {
        padding: 24px 20px;
    }

    /* FOOTER */

    .footer-inner {
        padding: 9px 18px;
        gap: 5px;
    }
}