/* --- 1. VARIABLES & RESET --- */
:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --primary-color: #0056b3; /* Zakelijk blauw - pas aan naar wens */
    --accent-color: #f1f1f1;
    --spacing-unit: 1rem;
    --max-width: 1200px;
}

* {
    box-sizing: border-box; /* Cruciaal: padding vergroot elementen niet */
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth; /* Zorgt voor zacht scrollen bij anker-links */
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* --- 2. UTILITY CLASSES --- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 4px;
    font-weight: 600;
    transition: background 0.3s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-small {
    padding: 8px 16px;
    border: 1px solid var(--text-color);
    font-size: 0.9rem;
}

/* --- 3. HEADER & NAV --- */
header {
    padding: 20px 0 80px 0;
    background-color: var(--accent-color); /* Lichtgrijze achtergrond voor contrast */
}

.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 80px;
}

.logo {
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: -1px;
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

/* --- 4. SECTIONS GENERAL --- */
.section-padding {
    padding: 80px 0;
}

.section-header {
    margin-bottom: 60px;
    max-width: 600px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.section-header p {
    font-size: 1.1rem;
    color: #555;
}

/* --- 5. GRID SYSTEM --- */
.grid-3 {
    display: grid;
    /* De Magic Grid syntax: Responsive zonder media queries */
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem; /* Ruimte tussen de blokken */
}

/* --- 6. CARDS (Pijn & Oplossing) --- */
.card {
    background: #fff;
    padding: 2rem;
    border-left: 4px solid var(--primary-color); /* Visueel accent */
    box-shadow: 0 4px 6px rgba(0,0,0,0.05); /* Subtiele diepte */
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.card p {
    font-size: 0.95rem;
    color: #444;
}

/* --- 7. DARK SECTION (Oplossing) --- */
.bg-dark {
    background-color: var(--text-color); /* Donkergrijs/Zwart */
    color: #fff;
}

.bg-dark h2 {
    color: #fff;
    margin-bottom: 20px;
    font-size: 2.5rem;
}
/* --- 8. FOOTER --- */
footer {
    background-color: #f9f9f9; /* Iets anders dan wit, maar niet zo zwaar als de Oplossing-sectie */
    padding: 60px 0 20px 0;
    text-align: center;
    border-top: 1px solid #eaeaea;
}

.footer-content h3 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.footer-content p {
    margin-bottom: 30px;
    color: #444444;
}

.btn-large {
    padding: 15px 30px;
    font-size: 1.1rem;
    margin-bottom: 50px;
}

.footer-details {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap; /* Zorgt dat het netjes breekt op mobiel */
    margin-bottom: 40px;
    font-size: 0.9rem;
    color: #555555;
}

.footer-details span {
    position: relative;
}

/* Verticale streepjes tussen de details (behalve de laatste) */
.footer-details span:not(:last-child)::after {
    content: "|";
    margin-left: 20px;
    color: #ddd;
}

/* Op mobiel halen we de streepjes weg omdat ze onder elkaar komen */
@media (max-width: 600px) {
    .footer-details span:not(:last-child)::after {
        content: "";
        margin: 0;
    }
    .footer-details {
        flex-direction: column;
        gap: 10px;
    }
}

.copyright {
    font-size: 0.8rem;
    color: #666666;
}

.lead-light {
    font-size: 1.1rem;
    color: #ccc; /* Iets lichter voor leesbaarheid op donkere achtergrond */
    margin-bottom: 2rem;
}

/* Split Layout voor Oplossing */
.split-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 4rem;
    align-items: center;
}

/* Feature List Styling */
.feature-list li {
    margin-bottom: 2rem;
    padding-left: 20px;
    border-left: 2px solid var(--primary-color); /* Blauwe lijn links */
}

.feature-list strong {
    display: block;
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: #fff;
}

.feature-list p {
    color: #ccc;
    font-size: 0.95rem;
}

/* Hero Sectie */
.hero-content {
    max-width: 800px;
}

h1 {
    font-size: 3.5rem; /* Groot en duidelijk */
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.lead {
    font-size: 1.25rem;
    color: #444444;
    margin-bottom: 30px;
    max-width: 600px;
}

.link-secondary {
    margin-left: 20px;
    text-decoration: underline;
    font-size: 0.95rem;
}

/* Mobiele aanpassing */
@media (max-width: 768px) {
    .nav-links { display: none; } /* Voor nu verbergen we menu op mobiel - eenvoud */
    h1 { font-size: 2.5rem; }
}