:root {
    --primary: #0066a1;
    --primary-light: #e6f4ff;
    --background: #f0f4f8;
    --card-bg: #ffffff;
    --text: #818589;
    --radius: 14px;
    --shadow: 0 6px 20px rgba(0,0,0,0.08);
    --transition: 0.3s ease;
}

    /* DARK MODE VARIABLES */
    :root.dark {
        --primary: #3399ff;
        --primary-light: #1a1a1a;
        --background: #121212;
        --card-bg: #818589;
        --text: #eee;
    }

/* BODY */
body {
    margin: 0;
    font-family: "Inter", Arial, sans-serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
}

/* HEADER */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: #fff;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

    .header.active {
        box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    }

.logo {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    font-size: 1.4rem;
    font-weight: 700;
}

    .logo img {
        height: 45px;
        transition: transform 0.3s ease;
    }

        .logo img:hover {
            transform: scale(1.08) rotate(2deg);
        }

    .logo span {
        color: #1e1e1e;
        transition: color 0.3s ease;
    }

/* MENU */
.menu {
    display: flex;
    align-items: center;
}

    .menu a {
        margin-left: 1.5rem;
        text-decoration: none;
        color: var(--primary);
        font-weight: 600;
        position: relative;
    }

        .menu a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 0;
            height: 3px;
            background: var(--primary);
            transition: width var(--transition);
            border-radius: 2px;
        }

        .menu a:hover::after {
            width: 100%;
        }

/* HAMBURGER ICON */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 22px;
    cursor: pointer;
    z-index: 1002;
}

    .hamburger span {
        display: block;
        height: 3px;
        width: 100%;
        background: var(--primary);
        border-radius: 2px;
        transition: all 0.3s ease;
    }

    /* Open state hamburger -> X */
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

/* RESPONSIVE (MOBILE) */
@media screen and (max-width: 768px) {
    .menu {
        display: flex;
        flex-direction: column;
        align-items: flex-end; /* rechts uitlijnen */
        width: 100%;
        max-height: 0;
        overflow: hidden;
        background-color: #fff;
        position: absolute;
        top: 100%; /* direct onder header */
        left: 0;
        z-index: 99;
        border-top: 1px solid #ddd;
        transition: max-height 0.4s ease, padding 0.4s ease;
        padding: 0 0;
    }

        .menu a {
            padding: 12px 20px;
            border-bottom: 1px solid #eee;
            color: var(--primary);
        }

        .menu.active {
            max-height: 500px;
            padding: 12px 0;
        }

    .hamburger {
        display: flex;
    }
}

/* HERO */
.hero {
    padding: 6rem 2rem;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-light), #cce6ff);
    animation: fadeIn 1s ease;
}

    .hero h1 {
        margin: 0 0 1rem;
        font-size: 3rem;
        font-weight: 800;
    }

    .hero p {
        font-size: 1.3rem;
        opacity: 0.9;
    }

/* CARDS */
.card {
    background: var(--card-bg);
    padding: 2.5rem;
    margin: 2rem auto;
    max-width: 900px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

    .card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 25px rgba(0,0,0,0.12);
    }

/* TABLES */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    font-size: 1.05rem;
}

    table th {
        text-align: left;
        background: var(--primary);
        color: #fff;
        padding: 0.8rem;
    }

    table td {
        padding: 0.8rem;
        background: var(--card-bg);
        border-bottom: 1px solid #ddd;
    }

/* FORMS */
form input,
form select {
    width: 100%; /* volle breedte */
    max-width: none;
    height: 3rem; /* gelijke hoogte */
    padding: 0.8rem;
    border-radius: var(--radius);
    border: 1px solid #ccc;
    font-size: 1rem;
    box-sizing: border-box;
    margin-top: 0.3rem;
    color: var(--text); /* tekstkleur dropdown */
    background-color: var(--card-bg); /* achtergrond dropdown */
    appearance: none; /* verwijder standaard browser stijl */
    -webkit-appearance: none;
    -moz-appearance: none;
}

    /* FORMS FOCUS */
    form input:focus,
    form select:focus {
        outline: none;
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(0,102,161,0.2);
    }

/* BUTTON */
button {
    background: var(--primary);
    color: #fff;
    padding: 0.9rem 1.4rem;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: background 0.3s ease, transform 0.2s ease;
}

    button:hover {
        background: #004f7a;
        transform: translateY(-2px);
    }

/* FOOTER */
.footer {
    text-align: center;
    padding: 2rem;
    background: var(--primary);
    color: #fff;
    margin-top: 3rem;
    border-top-left-radius: 30px;
    border-top-right-radius: 30px;
}

/* THEME TOGGLE BUTTON */
.theme-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 0.6rem 0.9rem;
    border: none;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    font-size: 1.3rem;
    cursor: pointer;
    box-shadow: var(--shadow);
    z-index: 1001;
    transition: background 0.3s ease, transform 0.2s ease;
}

    .theme-toggle:hover {
        background: #004f7a;
        transform: scale(1.1);
    }

/* DIENSTEN LIJST */
ul.dienst-lijst li {
    background: var(--primary-light);
    color: var(--text);
    margin-bottom: 0.8rem;
    padding: 0.8rem 1rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
}

    ul.dienst-lijst li:hover {
        background: var(--primary);
        color: #fff;
        transform: translateY(-2px);
    }

/* FADE-IN */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

    .fade-in.visible {
        opacity: 1;
        transform: translateY(0);
    }

/* KEYFRAMES HERO */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}