:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --input-bg: #0f172a;
    --text-main: #f8fafc;
    --text-sub: #94a3b8;
    --primary: #3b82f6;
    --border: #334155;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    padding: 30px 20px;
    display: flex;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 1200px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.header h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

.btn-secondary {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    text-decoration: none;
    transition: background-color 0.2s, border-color 0.2s;
}

.btn-secondary:hover {
    background-color: var(--border);
}

/* Categorieën onder elkaar gestapeld */
.grid-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
    width: 100%;
}

.category-card {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.category-card h3 {
    font-size: 1.1rem;
    color: var(--text-main);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

/* Links in een net grid van kolommen */
.link-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
}

.link-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    background-color: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: border-color 0.2s, background-color 0.2s;
}

.link-card:hover {
    border-color: var(--primary);
    background-color: #1a2332;
}

.link-card img {
    width: 20px;
    height: 20px;
    object-fit: contain;
    border-radius: 3px;
    flex-shrink: 0;
}